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89results about How to "Curing time controllable" patented technology

Novel electromagnetic shielding paint for surface of silicone rubber

The invention relates to an electromagnetic shielding paint for the surface of a silicone rubber and a preparation method thereof. The electromagnetic shielding paint for the surface of the silicone rubber comprises a solute part and a solvent part, and the solute part comprises the following components: 15-27% of a film forming resin, 1-6% of a curing agent, 40-65% of a conductive filler, 0.2-0.6% of a coupling agent, 0.2-0.6% of an anti-settling agent, and 0.5-6% of a catalyst. The electromagnetic shielding paint of the invention has a very excellent adhesion effect on the surface of the silicone rubber, so the preparative conductive silicone rubber has a good electromagnetic shielding performance.
Owner:中化化工科学技术研究总院有限公司

Polyurethane resin mortar for cement base material repairing

The invention relates to a polyurethane resin mortar composition for cement base material repairing, which comprises raw materials A, B and C, wherein the raw material A comprises the following materials in parts by weight: 100 parts of polyalcohol, 5-60 parts of plasticizer, 0.01-3 parts of catalyst, 0-2 parts of defoaming agent, 0-30 parts of chain extender or crosslinking agent, 0-3 parts of coupling agent and 0-10 parts of stabilizer; the raw material B is isocyanate or prepolymer thereof; the raw material C is solid filler; and the mass ratio of the three raw materials A, B and C is 10:(1-30):(10-200). The composition is used as the repairing material for concrete structures of ballastless tracks and cement asphalt mortar, and has the advantages of high curing speed, good low-temperature curing property, high ductility and the like.
Owner:BEIJING TIEKE SPECIAL ENG TECH CO LTD +2

Concrete wall and bottom plate water seepage crack repair method

The invention discloses a concrete wall and bottom plate water seepage crack repair method. The method comprises the following steps that wall and bottom plate cracks are found out and marked; the crack of which the width is larger than 0.3 mm is subjected to digging into a V-shaped groove; dust, dirt and loose parts of the surface of concrete in the V-shaped groove area are removed and washed with water; layered dense blocking and maintenance are conducted on the V-shaped groove through a waterproof leaking stoppage part, and meanwhile, a grouting nozzle is implanted; grouting holes are obliquely drilled in the two sides of the crack, and a grouting nozzle is installed; and after final set of the waterproof leaking stoppage part, the grouting holes are circularly subjected to pressure grouting; and after grout is completed solidified, the grouting nozzles are disassembled. According to the method, by obliquely drilling the grouting holes in the two sides of the crack and installing the grouting nozzle, a plurality of channels communicating with the interior of the crack are formed, the water pressure of the interior of the crack can be reduced, grout can be injected into the crackconveniently in the later period, through permeation of the grout, the water seepage crack is sealed after the grout is solidified, and accordingly, the water seepage crack leaking stoppage effect isachieved so that underground construction water seepage accidents can be avoided.
Owner:中铁二十三局集团第四工程有限公司

Pressure bearing and leakage blocking agent

The invention discloses a pressure bearing and leakage blocking agent, which solves the problems of difficult retention, easy mixing, poor caking property and pollution of a drilling fluid of the routine leakage blocking agents. The pressure bearing and leakage blocking agent comprises the following components: an amorphous form aluminosilicate curing agent, an activator, a retarder and an inertia filling material; a ratio of components is calculated according to a following mode: modulus is 1.0-1.4, the activator with mass concentration being 10-20% is taken as a liquid phase, a mass ratio (water cement ratio) of the liquid phase to the curing agent is 0.8-1.2; the addition of the retarder accounts for 0-1% of total amount of the above slurry. The pressure bearing and leakage blocking agent has the advantages of adjustable solidification time, high solidification intensity, large bearing, is not restricted by a leakage channel, so that effective plugging is formed to a leakage layer.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

Mine water glass reinforced water shutoff material

The invention relates to a mine water glass reinforced water shutoff material which is composed of two independent components, namely component A and component B, wherein the component A comprises following raw materials by weight: 51-99.9% of water glass A, 0-50% of water glass B, 0.1-2% of catalyst C and 0-50% of plasticizer D; and the component B comprises the following raw materials by weight: 51-100% of curing agent A, 0-50% of curing agent B and 0-50% of polyether polyol C. The mine water glass reinforced water shutoff material has the effects of high flame resistance, low reaction heat and adjustable curing time; and environmental water basically does not influence the reaction. By utilizing the mine water glass reinforced water shutoff material, the safety of production of a coal mine can be improved to a great extent.
Owner:SHANXI YUBANG NEW POWER SCI & TECH

Fly ash solidification foamed material for preventing coal spontaneous combustion and preparation method thereof

A fly ash solidification foamed material for preventing coal spontaneous combustion and a preparation method thereof. The fly ash solidification foamed material comprises the following ingredients, by weight: 40-60 parts of water, 100 parts of fly ash, 25 parts of complex powder for chemically self-producing gas, 1-5 parts of an accelerator, 1-4 parts of an activator, 0.6-1.5 parts of a water reducer, and 0.5-1 parts of a foam stabilizer. The preparing method comprises: adding the foam stabilizer in water and stirring to form a uniform foam solution; adding the fly ash, the complex powder for chemically self-producing gas, the accelerator, the activator, and the water reducer in a dry-blending mixer to form a blended powder; and finally adding the blended powder into the uniform foam solution to obtain the fly ash solidification foamed material. The material of the invention is light in weight, safe and low in costs, and has strong crack penetration capability, adjustable solidification time, great compressive strength, low heat conductivity coefficient, and a good heat insulation effect; foam fluid can uniformly cover loose coal-rock mass; carbon dioxide is released during a foaming reaction process to well dilute the oxygen concentration in residual coal space; and the operation technique is simple.
Owner:CHINA UNIV OF MINING & TECH

Bi-component flame-retardant low-viscosity unsaturated polyester resin and preparation method thereof

The invention relates to bi-component flame-retardant low-viscosity unsaturated polyester resin and a preparation method thereof. The unsaturated polyester resin is prepared by undergoing a polycondensation reaction on dihydric alcohol and binary acid / acid anhydride. A cross-linking agent and a flame retardant are added in the reaction, so that the aims of lowering resin viscosity and enhancing material intensity and flame retardance are fulfilled, and the unsaturated polyester resin can be taken as a grouting reinforcement material for broken surrounding rocks and loose coal-rock masses in underground constructions such as mines and the like.
Owner:TIANDI SCI & TECH CO LTD

Fire-retardant high-flexibility two-shot grouting material and preparation method thereof

The invention relates to a fire-retardant high-flexibility two-shot grouting material and a preparation method thereof, and aims at solving the technical problems that an existing grouting material is poor in stability, poor in flexibility, low in compressive strength and high in cost. Polypropylene glycol (PPG), water glass, an emulsifier, a catalyst, sorbitol and water are adopted to form a component A; polymethylene polyphenyl isocyanate and acetyl citrate are taken as a component B; and the component A and the component B are mixed at the weight ratio of (0.65-1.3) to 1 when used. The grouting material disclosed by the invention is simple to prepare, low in cost, stable in performance, low in viscosity, controllable in curing time, excellent in flame resistance after being cured, high in strength, good in tenacity, good binding power, and free of foaming in a water environment, can still keep relatively high mechanical property, and is suitable for rapid reinforcement and seal leakage treatment of broken seam, terrane, concrete cracks, highway cracks and roadbeds.
Owner:HENAN POLYTECHNIC UNIV

Heat-resistant and salt-resistant profile controlling agent and preparation method thereof

The invention discloses a heat-resistant and salt-resistant profile controlling agent, comprising waste slurry, a slurry curing agent, a strength modifier, a dispersant, a retarder and water. Based on the weight of the waste slurry as 100%, the profile controlling agent comprises 6-12 wt% of the slurry curing agent, 6-12 wt% of the strength modifier, 0.1-1.5 wt% of the dispersant, 0.02-0.15 wt% of the retarder and 6-12 wt% of water. The invention also relates to a preparation method of the heat-resistant and salt-resistant profile controlling agent. The heat-resistant and salt-resistant profile controlling agent is obtained by the steps of adding the slurry curing agent, the strength modifier, the dispersant, the retarder and water in the waste slurry, based on the weight of the waste slurry, and standing for 66-78 hours. The invention also provides an application of the waste slurry in preparing the heat-resistant and salt-resistant profile controlling agent.
Owner:CHINA PETROLEUM & CHEM CORP

Low-temperature antistatic grouting solidifying material and preparation method thereof

The invention discloses a low-temperature antistatic grouting solidifying material and a preparation method thereof. The grouting solidifying material, which is low in heat storage temperature and antistatic, comprises, by weight, 100 parts of isocyanate, 70-100 parts of polymer polyatomic alcohol, 0.5-2 parts of tin catalyst, 10-50 parts of flame-retardant diluent, and 10-30 parts of graphite. With the graphite modified polyurethane grouting material, antistatic performance of the grouting composite can be optimized utilizing conductivity and heat conduction of graphite, and heat transfer in the grouting solid is promoted in the mean time. Heat storage temperature of the grouting material is remarkably lowered, and potential risks are reduced.
Owner:ANHUI UNIVERSITY

Water dispersion composite sand-fixing agent formula

The invention relates to a formula of water dispersing compounding sand consolidation agent. It is made up from modified phenol-formaldehyde resin 5-8%, organic silicon resin 0.02-0.25%, furfural compounding 5-15%, alcohol compounding 0.5-5%, phosphoric acid series compounding 0.05-0.15% and water 89.43-81.6%. The benefit is that the sand consolidation agent has low viscosity, low usage quantity, low cost, etc.
Owner:赵彧

Red mud-based self-suspension flexible grouting material and preparation method thereof

The invention provides a red mud-based self-suspension flexible grouting material and a preparation method thereof, and mainly aims at solving the technical problems that an existing inorganic grouting material is poor in self-suspension performance and bad in flexibility. According to the red mud-based self-suspension flexible grouting material and the preparation method thereof, red mud, a suspending agent, a catalyst, a cross-linking agent and water are adopted to compose a component A, polyaryl polymethylene isocyanate serves as a component B, in the use process, the component A and the component B are mixed to be uniform according to a proportion, and the red mud-based self-suspension flexible grouting material is obtained. The red mud-based grouting material is good in self-suspension performance and easy to grout; the curing time is easy to control, the bonding strength is high after curing is achieved, and the flexibility is good. The red mud-based self-suspension flexible grouting material can be widely applied to repairing of road cracks.
Owner:HENAN POLYTECHNIC UNIV

Curable leak-stopping agent

The invention relates to a curable leak-stopping agent. The curable leak-stopping agent comprises the following components which are mixed by weight percentage: 30 to 50 percent of curable material blast furnace, 5 to 15 percent of high filtration material diatomite or fly ash, 15 to 25 percent of fibrous material asbestos fiber, cotton fiber or cob, 2 to 5 percent of soft elasticity expansion material elastic tyre rubber and 20 to 30 percent of acid-soluble material calcium carbonate. The leak-stopping agent provided in the invention can be used independently. The curing time is controllable; the leak-stopping efficiency is high and the leak-stopping agent does not discriminate leakage layer apertures or crack dimensions. The leak-stopping agent is an efficient and curable leak-stopping agent which can be used to stop crack leakage and cave nonreservoir and reservoir leakage.
Owner:DAQING PETROLEUM ADMINISTRATION +1

Waterproof construction method of basement foundation cast-in-place pile head

The invention discloses a waterproof construction method of a basement foundation cast-in-place pile head. The waterproof construction method particularly comprises the steps of base plane cleaning, pile head root grooving, vertical face capillary crystalline type waterproof coating and waterproof mortar smearing, base layer treating agent smearing, sealant smearing, reinforcing layer coiling, reinforcing layer shearing position sealing, large face waterproof construction, sealing of the combining portion of a large face and the pile head, pile head waterproof closing and fixing and high-permeability epoxy resin waterproof coating smearing. High-permeability epoxy resin waterproof coating, sealants, capillary crystalline type waterproof coating and waterproof mortar are smeared, waterproof rolls are laid, and rigid waterproofing and flexible waterproofing are achieved. Waterproofness of a foundation platform and waterproofneses of a bearing platform and the pile head are combined into one, and leakage points are prevented from happening to the pile head to guarantee project quality. The construction process is easy and convenient to operate, construction speed is high, no water moving layer exists, energy saving and consumption reducing are achieved, and the waterproofing term is prolonged.
Owner:郑贤方

Anti-static coating for photo-curing nanometer polyaniline-epoxy acrylic resin interpenetrating network

The invention relates anti-static coating for a photo-curing nanometer polyaniline-epoxy acrylic resin interpenetrating network, which is prepared by interpenetrating polyaniline and an epoxy acrylic resin system under the action of an initiator and a catalytic agent. Aniline is subjected to in-situ emulsion polymerization in epoxy acrylic resin to obtain doped nanometer polyaniline particles, and a dilute monomer, a catalytic agent, an initiator, a polymerization inhibitor and fillers are further added into the doped nanometer polyaniline particles to be stirred evenly. The anti-static coating is simple in process device, convenient to operate and quick in curing speed. The anti-static coating for the photo-curing nanometer polyaniline-epoxy acrylic resin interpenetrating network has good glossiness, stable electric conduction performance, good mechanical property, ageing-resistant performance and chemical erosion resistance performance, not only can serve as the anti-static coating, but also has the price and environment-friendly advantages. Products can be used in the inner walls of oil transmission pipelines, electronic machines, electrostatic dust preventing floors, bridges, railways and other places and have wide application range and good economic and social benefits.
Owner:HUBEI QILI NEW MATERIAL CO LTD

High-temperature magnesium oxychloride thermosetting resin gel system as well as solidified body and preparation method of system

The invention relates to the field of oil and gas well cementing, and relates to a high-temperature magnesium oxychloride thermosetting resin gel system as well as a solidified body and preparation method of the system. The high-temperature magnesium oxychloride thermosetting resin gel system comprises an epoxy resin emulsion, an epoxy resin curing agent, a magnesium oxychloride skeleton materialand a high-temperature adjustable solidification agent, wherein the epoxy resin emulsion is at least one selected from the group consisting of glycidyl ether type epoxy resin, glycidyl ester type epoxy resin, cycloaliphatic type epoxy resin, glycidyl amine type epoxy resin, and linear aliphatic type epoxy resin; and the epoxy resin curing agent is at least one selected from the group consisting ofan anhydride, a carboxylic acid, an amine compound, a phenol compound, and a polyhydric alcohol. The high-temperature magnesium oxychloride thermosetting resin gel system provided by the invention can be cross-linked and cured to form an organic polymer material with a three-dimensional net-shaped structure under the conditions of heating, pressing and the like, and realizes annulus long-term sealing performance of cementing cement in the high-temperature environment of 90-120 DEG C relying on the advantages of excellent heat resistance, good compressive strength and toughness, excellent adhesion and the like.
Owner:CHINA PETROLEUM & CHEM CORP +1

Method for preparing unsaturated carboxylate solution modified concrete compound material

The invention discloses a method for preparing an unsaturated carboxylate solution modified concrete compound material. The method comprises the following steps of: mixing and stirring 20-60 parts of water and 100-150 parts of a magnesium acrylate solution for 2 minutes; respectively and sequentially adding 0.1-0.15 part of sodium persulfate and 5-12 parts of polypropylene fibers until the materials are uniformly dispersed to prepare a mixed solution A; mixing and stirring 300-400 parts of aggregates, 100 parts of cement, 0-40 parts of pulverized fuel ash, 0-10 parts of silica fume, 5-50 parts of sericite powder and 0-50 parts of white carbon black until the materials are uniformly dispersed, adding half mixed solution A, stirring for 2 minutes, adding the rest half mixed solution A, and stirring until the materials are uniformly dispersed. Compared with the prior art, the material has the advantages of convenience in construction, controllable curing time, good elastoplasticity, short construction time and the like and has a wide application prospect in the fields of expansion joints of highway, roads, bridges and other construction structures.
Owner:CHENGDU JUANCHENG CIVIL ENG INVESTIGATION & DESIGN CO LTD

Concrete thin-layer repairing polymer mortar and preparation method thereof

ActiveCN107777922AGood wear resistance and repair abilityEasy to adjustPolyurea/polyurethane coatingsPolymer scienceThin layer
The invention provides concrete thin-layer repairing polymer mortar and a preparation method thereof and relates to the field of mortar. The concrete thin-layer repairing polymer mortar is prepared from the following raw materials in weight ratio: two-component slow reaction type polyurea waterproof coating and a sand material, wherein the weight ratio of the two-component slow reaction type polyurea waterproof coating to the sand material is 1:(1-3). By utilizing the concrete thin-layer repairing polymer mortar, the problem that polymer mortar in the prior art cannot well repair a concrete building component can be solved, and the concrete thin-layer repairing polymer mortar has the advantages of good bonding performance, corrosion resistance and scour and wear resistance.
Owner:XINJIANG KENENG WATERPROOF & PROTECTION TECH CO LTD

Bridge and tunnel pavement waterproof bonding layer material and preparation method and application thereof

The invention discloses a bridge and tunnel pavement waterproof bonding layer material and a preparation method and application thereof. The material comprises a water-borne epoxy resin, a water-borneepoxy resin curing agent aqueous solution, emulsified asphalt, a water-borne polyurethane emulsion, graphene oxide, mineral active ultrafine powder and the like. The preparation method comprises uniformly mixing waterborne epoxy resin, emulsified asphalt, waterborne polyurethane emulsion, graphene oxide and mineral active ultrafine powder to form a component A, taking a waterborne epoxy resin curing agent aqueous solution as a component B, and uniformly mixing the component A and the component B. According to the invention, the defects of high cost, low strength, poor toughness, poor cohesiveness and the like of the existing waterproof bonding layer material are overcome, and an environment-friendly material with low cost, high strength, good toughness, good durability, excellent cohesiveness and excellent waterproof performance is obtained.
Owner:SHANGHAI INST OF TECH

Rubber plug for stabilizing well wall of limestone deep well and preparation method thereof

The invention relates to a rubber plug for stabilizing a well wall of a limestone deep well and a preparation method thereof. The rubber plug is prepared from raw materials of epoxy resin, diluents, curing agents, modifying agents and coupling agents; the diluents account for 20 to 30 mass percent of the resin; the curing agents account for 15 to 40 mass percent of the resin; the modifying agentsaccount for 2 to 3 mass percent of the resin; the coupling agents account for 1 to 5 mass percent of the resin. The rubber plug provided by the invention is adjustable at the temperature of 100 to 150DEG C within 4 to 9 hours; the high pressure-resistant intensity and the well wall stabilizing effects are achieved; the long-time stability is high; the rubber plug is applicable to the well wall stabilizing operation of well wall collapse wells.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Furan resin material based on multi-arm cross-linking agent and starch nanocrystal modification and preparation method and application thereof

The invention provides a furan resin material based on multi-arm cross-linking agent and starch nanocrystal modification as well as a preparation method and application of the furan resin material. The furan resin material is prepared from the following raw materials in parts by weight: 20-40 parts of furan resin and 20-40 parts of filler, 70-95 parts of furan resin, 5-20 parts of a curing agent,0-5 parts of a multi-arm cross-linking agent and 0-5 parts of starch nanocrystals. The furan resin has the characteristics of controllable curing plugging time and long-term stability in acid and alkali resistance and can be used as a matrix of a high-strength permanent plugging material; meanwhile, the mechanical properties and heat resistance of the furan resin material are enhanced by using themulti-arm crosslinking agent and starch nanocrystals. The modified furan resin type plugging material can improve the waterflooding development effect and realize the function of permanently pluggingan underground water outlet layer.
Owner:汉中聚智达远环能科技有限公司

Plugging material and preparation method thereof

The invention discloses a plugging material and a preparation method thereof. The plugging material comprises the following components in percentage by mass: 0.1-0.5% of a surfactant, 3-10% of oil, 0.1-0.5% of a tackifier, 20-50% of a curing agent, 12-0% of a curing reaction aid, 5-50% of a structural strength aid, 1-25% of a filtrate reducer, 1-20% of a retarder and the balance of water. The surfactant comprises an oil-soluble surfactant and a water-soluble surfactant, and the retarder comprises a retarder I and a retarder II; the plugging material is of a water-in-oil-in-water type structure, an inner water-in-oil structure is composed of part of water, a first retarder, an oil-soluble surfactant and oil, and the water-in-oil structure and other components form an oil-in-water structure.The plugging material is adjustable in curing time, has good flow characteristics and thixotropy, does not depend on identification of the width of a leakage crack, has the advantages of high strength of a cured plugging belt, capability of being removed by acid dissolution and no damage to a reservoir, can be used for leakage control of a non-reservoir section and leakage control of a reservoirsection, and is wide in application range.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

High-pressure-bearing temporary plugging agent

The invention discloses a high-pressure-bearing temporary plugging agent. The high-pressure-bearing temporary plugging agent is characterized by comprising the following components in parts by weight: 100 parts of water, 3-5 parts of bentonite, 0.3-0.5 part of xanthan gum, 70-110 parts of a slag-type gelatinizing agent, 3-6 parts of a filling agent, 3-5 parts of a retarder and 10-200 parts of barite powder. The high-pressure-bearing temporary plugging agent disclosed by the invention has the advantages of simple formula, low cost, short curing time and convenient operation; the risk of blocking of a drill caused by a cementing plug is avoided, the tripping operation required by the cementing plug is decreased, the drilling plug is avoided, the operation time for packing an open hole section by virtue of the conventional tie-backing well-cementation plug is facilitated to be shortened; the construction of the temporary plugging agent is simple, which meets the on-site pumping requirement; and the high-pressure-bearing temporary plugging agent can be widely applied in petroleum and natural gas drilling.
Owner:中国石油集团川庆钻探工程有限公司川东钻探公司

Unsaturated polyester paint coated on furniture and preparation method thereof

The invention discloses an unsaturated polyester paint coated on furniture and a preparation method thereof. The paint comprises a component A (unsaturated polyester and cumene hydroperoxide) and a component B (styrene and toluene-2, 4-bis[N, N-dimethylamino-N-propylurea]. During construction, the component A is firstly heated to a certain temperature, and the unsaturated polyester paint can be used after the component A is mixed with the component B by a certain ratio. The paint has no byproducts, the curing time is not affected by temperatures, the preparing technical process is simple, and the application prospect is wide.
Owner:刘星

3D printing sprayer

The invention discloses a 3D printing sprayer which comprises a sprayer body with an inner cavity. A lightproof injection head and a light permeable injection head coaxial with the lightproof injection head are fixed to the bottom of the sprayer body. The light permeable injection head is fixed to the bottom of the lightproof injection head. The inner cavity of the sprayer body communicates with an inner cavity of the lightproof injection head and an inner cavity of the light permeable injection head. Different from a traditional photocuring printing system, the sprayer structure adopts the mode that the lightproof injection head and the light permeable injection head are connected and communicate with each other so that the injectors of the sprayer structure can be formed. Cross-linking curing can be achieved under uniform irradiation under ultraviolet light. In the whole process from entering the light permeable injection head to final extrusion, a photocuring material completes partial cross-linking curing, and the photocuring material adheres to a curing material on the upper layer due to viscosity of the photocuring material till printing of a complex three-dimension solid structure is completed.
Owner:ZHEJIANG UNIV

Preparation method of magnesium phosphate medical bone adhesive

A preparation method of a magnesium phosphate medical bone adhesive concretely comprises the following steps: 1, calcining medical MgO, and carrying out dry grinding to obtain powder having a granularity of 0-20mum; 2, placing KH2PO4 in a drying box, drying at 120DEG C for above 24h, and carrying out dry grinding to obtain powder having a granularity of 0-20mum; 3, processing an additive to prepare a dilute solution having a concentration of 1.0-10.0%, and uniformly stirring to obtain a solid phase mixed solution A; and 4, uniformly mixing the MgO powder obtained in step 1 with the KH2PO4 powder obtained in step 2 to obtain a mixture B, adding the mixture B to the solid phase mixed solution A while stirring to obtain a slurry C, and continuously stirring the slurry C for 1min to obtain the magnesium phosphate medical bone adhesive. The preparation which allows the additive to be added into the solid phase mixed solution obviously improves the adhesive strength of the prepared magnesium phosphate medical bone adhesive.
Owner:XIAN UNIV OF TECH

Temperature-resistant salt-tolerate inorganic particle water-blocking agent

InactiveCN103614126AIncrease the content of active SiImprove stabilityDrilling compositionPotassiumWater block
The invention provides a temperature-resistant salt-tolerate inorganic particle water-blocking agent. The water-blocking agent comprises following components by weight: 55%-59% of a dry-material mixture sample and 1%-7% of a retarder, with the balance being water. The main component of the dry-material mixture sample is a mixture of cement and coal ash. The retarder is one compounds selected form a group of sodium lignosulphonate, modified sodium lignosulphonate, potassium lignosulphonate and modified potassium lignosulphonate, or a mixture of several compounds selected from the group. The curing time of the inorganic particle water-blocking agent is controllable and the compressive strength of the water-blocking agent is high. When being pumped into stratums by a high-pressure pump, the water-blocking agent can settle and cure in underground pores, thus blocking a certain well section or a water exit position. The water-blocking agent can have good effects for determining accurately the water exit position, or for blocking bottom water of parts need to be blocked and edge and bottom water of the parts need to be blocked, and is suitable for oil reservoirs having moderate and high permeability and various temperatures.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA) +1

New method for manufacturing paper-based micro-fluidic chip

The invention relates to a new method for manufacturing a paper-based micro-fluidic chip. According to the method, a chip pattern is directly printed on filtering paper by utilizing a photocuring material and combining a stamp technology while the material is cured by utilizing ultraviolet lamp irradiation so as to generate a hydrophobic solid material on the filtering paper in situ, and the hydrophobic solid material as a hydrophobic dam blocks an aqueous solution flowing through the middle to finally form a patterned hydrophilic channel on the filtering paper so as to obtain the paper-basedmicro-fluidic chip. According to the invention, the manufacturing method has the advantages of low price and easily available raw materials and simple and rapid manufacturing process, can be used formanufacturing a paper-based micro-fluidic chip to achieve on-site analysis and detection, and can also be directly used for manufacturing science popularization teaching aids, implementing classroom experiments and the like.
Owner:CAPITAL NORMAL UNIVERSITY

Organic-inorganic hybrid cross-linked heat-conducting silica gel and preparation method thereof

The invention discloses organic-inorganic hybrid cross-linked heat-conducting silica gel, which is prepared from the following raw materials: vinyl silicone oil, hydrogen-containing silicone oil, dimethyl silicone oil, chemically modified inorganic filler, copper powder, white carbon black, graphene, a catalyst and an inhibitor. The organic-inorganic hybrid cross-linked heat-conducting silica gel comprises the following components in percentage by weight: 30%-35% of vinyl silicone oil, 5%-8% of hydrogen-containing silicone oil, 2%-5% of dimethyl silicone oil, 35%-40% of chemically modified inorganic filler, 15%-20% of copper powder, 1%-5% of white carbon black, 0.1%-0.3% of graphene, 0.02%-0.06% of a catalyst and 0.005%-0.01% of an inhibitor, wherein the chemically modified inorganic filler is obtained by modifying a to-be-modified inorganic filler with a coupling agent. The to-be-modified inorganic filler is modified through the coupling agent, the surface of the to-be-modified inorganic filler is modified to enable the to-be-modified inorganic filler to have double-bond functional groups the same as those of a matrix, the filler and the matrix are connected together in a chemical bond mode through the hydrosilylation effect, through connection of the chemical formula, sedimentation of the filler can be effectively improved, and the construction of a whole heat-conducting passage of the system is facilitated.
Owner:SHANDONG IND TECH RES INST OF ZHEJIANG UNIV

Heavy oil thermal recovery high-temperature channeling blocking composite plugging-adjusting liquid and preparing method and application thereof

The invention discloses heavy oil thermal recovery high-temperature channeling blocking composite plugging-adjusting liquid and a preparing method and application thereof. The components of the liquid comprise, by weight, 1000 parts of water, 200-500 parts of water glass, 10-30 parts of flyash, 1-10 parts of lignosulfonate, 10-20 parts of modified starch, 0.3-0.5 part of foaming agent and 0.3-0.5 part of foam stabilizer. In-well fluid of the heavy oil thermal recovery high-temperature channeling blocking composite plugging-adjusting liquid is pure liquid, mobility and injection efficiency are good, and the liquid has small harm on a stratum; curing time is controllable, and can be adjusted according to a construction situation; the liquid has a strong high-temperature resistance, and can endure temperature of 300 DEG C or above; validity period for blocking is long, and can last for more than several years, thus effectively avoiding repetitive operation on the same channeling layer; after blockage, residual resistance factor remains large, and thus blockage of the channeling layer and a water yield layer is effectively achieved.
Owner:北京百利时能源技术股份有限公司
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