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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.