144results about How to "Improve shrinkage resistance" patented technology

The present invention discloses one kind of multifunctional modified atactic polypropylene pipe material and its preparation process. The atactic polypropylene pipe material consists of atactic copolypropylene, environment friendly fire retardant, pre-dispersed master batch of inorganic stuffing, impact modifier, antioxidant, composite antibacterial master batch and dispersant. It is applied in building pipes, pipeline for beverage and food industry, heat supply system and farm irrigation system. It has fire retarding and antibacterial functions, less shrinkage, high low temperature impact resistance, high heat resistance, high mechanical performance and excellent heat stability.

A low shrinkage, high temperature resistant vitreous inorganic fiber having a use temperature up to at least 1330° C., which maintains mechanical integrity after exposure to the use temperature and which is non-durable in physiological fluids, is prepared by the method of forming a melt with ingredients including greater than 71.25 weight percent silica, 0 to about 20 weight percent magnesia, and about 5 to about 28.55 weight percent of calcia, 0 to about 5 weight percent zirconia, and optionally a viscosity modifier in an amount effective to render the product fiberizable; and producing fibers from the melt.

It is to provide a block copolymer and its copolymer composition which provides a heat shrinkable (multilayer) film with less spontaneous shrinkage while maintaining favorable low temperature shrinkability, and a heat shrinkable (multilayer) film containing the block copolymer. By using a block copolymer comprising a vinyl aromatic hydrocarbon and a conjugated diene characterized in that the relation of the loss tangent value obtained by dynamic viscoelasticity measurement with the temperature satisfies specific conditions, or a composition containing the copolymer composition as an essential component, a heat shrinkable (multilayer) film with less spontaneous shrinkability and less odor while maintaining favorable low temperature shrinkability can be obtained.

The invention discloses a UV curing resin, a preparation method thereof and the application of the UV curing resin in a UV curing colored paint. The preparation method comprises the following steps: mixing polyalcohol, polyacid and fatty acid at first, adding a reflow solvent to prepare alkyd resin, then mixing an ester compound and isophorone diisocyanate, adding a polymerization inhibitor and a catalyst, reacting to obtain acrylic acid modified polyurethane, reacting the acrylic acid modified polyurethane and the alkyd resin for 2-3 h at the temperature of 60-100 DEG C to obtain the YV curing resin, and performing reaction of the UV curing resin, an acrylic acid alkyl oxidation polyol ester active diluent, a pigment, thermoplastic acrylic resin, a photoinitiator, an alkyd resin drier, a dispersant, a foam agent and a flattening agent to obtain the UV curing colored paint. The invention solves the problems that as a pigment in a conventional ultraviolet light curing colored paint system shields ultraviolet light, the paint system can not be completely cured, and as the UV curing resin can not well moisten the pigment, and the coating adhesive force is poor.

The invention relates to the technical field of a bulk molding compound for metal bonding, and specifically relates to an unsaturated polyester bulk molding compound as well as a method and application of the bulk molding compound. The bulk molding compound is prepared from the following raw materials in parts by weight: 8-20 parts of unsaturated polyester, 5-15 parts of low shrink agent, 55-70 parts of inorganic filler, 0.8-1.8 parts of internal demolding agent, 6-20 parts of fiber-reinforced material, 0.3-0.7 parts of curing agent, 0-3 parts of styrene, and 0.05-0.3 part of coupling agent. According to the invention, after the bulk molding compound (BMC) is molded, fast setting is realized and the appearance is excellent; and when used for electric tool and motor loop sealing and other fields, the bulk molding compound has excellent bonding property and torsion to the metal surface at normal temperature and high temperature, excellent resistance to impact, and excellent voltage withstand performance, conforms to the reliability required by product use, and fills up the blank of the field.

The invention discloses anti-cracking steam-curing-free ultra-high-strength high-toughness concrete. The anti-cracking steam-curing-free ultra-high-strength high-toughness concrete is prepared from cement, fly ash, silica fume, a mineral activator with cementing property, gravel, river sand, steel fibers, a polymer emulsion, water and a shrinkage-reducing super-dispersing admixture, wherein the mineral activator with cementing property comprises waste prefabricated concrete set cement crystal seeds and desulfurized gypsum. By using the mineral activator with cementing property in the concrete, high-temperature steam curing and pressurized steam curing systems adopted in the ordinary ultra-high-performance concrete are eliminated; and the shrinkage-reducing super-dispersing admixture having the functions of super-dispersing cement, reducing shrinkage, decreasing viscosity and the like is adopted to enable the hydration activity of cement to give a full play so that the strength of the concretes has no obvious change after cement usage is decreased by about 10%; and meanwhile, the mineral activator and the admixture can effectively suppress the shrinkage of concrete. The concrete prepared by the preparation method is higher in strength, toughness and shrinkage resistance, low in cost and simple in preparation method and has important practical application value.

The invention provides a thermoplastic polyurethane composite foamed material and a preparation method thereof. The thermoplastic polyurethane composite foamed material is prepared from 10-25 parts of polyurethane, 35-45 parts of ethylene-vinyl acetate copolymers, 15-30 parts of polyolefin elastomers, 6-10 parts of polyethylene, 6-18 parts of ethylene propylene diene monomers, 6-15 parts of polybutadiene polymers, 3-5 parts of filler, 1.5-2.2 parts of zinc oxide, 0.4-0.6 parts of stearic acid, 0.8-1.4 parts of zinc stearate, 0.1-0.4 parts of a cross-linking agent, 0.7-1.0 part of a bridging agent and 2.5-3.5 parts of a foaming agent. The thermoplastic polyurethane composite foamed material is high in rebound resilience, resistant to compression and good in tear resistance. The preparation method of the thermoplastic polyurethane composite foamed material comprises steps as follows: 1) components except zinc oxide, the cross-linking agent, the bridging agent and the foaming agent are weighed; 2) all the components weighed in the step 1) are mixed; 3) the rest components are weighed; 4) the components weighed in the step 3) are added to a material obtained after mixing in the step 2) for mixing; 5) granulation is performed; 6) foaming is performed.

The invention relates to a polymeric putty, in particular to an atomic ash specialized for carpentry decoration. The invention is specialized for meeting the using requirements of the carpentry furniture production and the interior decoration and fitment industry. The invention consists of two compositions: main ash and an evocating agent; the weight percentage of the main ash and the evocating agent is 100:2; when the invention is used, two compositions are evenly mixed according to mixture ratio. The main ash consists of the following compositions in percentage by weight: 35 to 45 portions of unsaturated polyester resin, 5 to 10 portions of saturated polyester resin, 0.003 to 0.005 portion of anti skinning agent, 8 to 12 portions of styrene, 0.3 to 1.2 portions of accelerant, 0.2 to 0.5 portion of wetting agent, 1 to 2 portions of thixotropic agent, 1 to 3 portions of zinc stearate, 5 to 8 portions of titanium pigment, 5 to 8 portions of permanent white, 20 to 35 portions of talcum powder and 8 to 12 portions of atomic powder. The evocating agent consists of the following compositions in percentage by weight: 45 to 55 portions of cyclohexanone peroxide or methyl ethyl ketone peroxide, 35 to 48 portions of dibutyl phthalate and 4 to 9 portions of SiO2. The atomic ash specialized for carpentry decoration has the following advantages that: the atomic ash has good adhesive force with various carpentry materials, good construction and flexility and shrinkage resistance and rapid drying speed and can fill up large holes or cracks; the putty film is exquisite, smooth and good in air-drying property and can be matched with wood lacquer in the market for use.

The invention relates to an environment-friendly building simulated tile coating and a preparation method thereof, and belongs to building materials. The environment-friendly building simulated tile coating is used for the decoration of surfaces of outer walls of buildings, and the defects of high possibility of dropping, large dead height of tiles and high cost in the conventional tile system are overcome. The environment-friendly building simulated tile coating consists of water, titanium dioxide, colorful sand and a dispersing agent, 2 weight percent of cellulose ether aqueous solution, a pure acrylic emulsion, ethanediol, a thickening agent, a film-forming aid, a defoamer, a preservative, a pH regulator and a multifunctional aid in a specific weight ratio. The preparation method comprises the following steps of: mixing liquid materials uniformly, mixing solid materials uniformly, adding the uniformly-mixed solid materials into the uniformly-mixed liquid materials slowly, and stirring uniformly to obtain the environment-friendly building simulated tile coating. The environment-friendly building simulated tile coating has a vivid tile visual effect and is diversified in colors, simple and tasteful, high in contractibility resistance, resistant to aging, long in service life, non-toxic and tasteless, and environmental protection is facilitated; and the environment-friendly building simulated tile coating can be constructed at the temperature of -5 DEG C, and compared with like products, the environment-friendly building simulated tile coating has the advantage that the construction period can be prolonged by one month.

It is to provide a block copolymer and its copolymer composition which provides a heat shrinkable (multilayer) film with less spontaneous shrinkage while maintaining favorable low temperature shrinkability, and a heat shrinkable (multilayer) film containing the block copolymer. By using a block copolymer comprising a vinyl aromatic hydrocarbon and a conjugated diene characterized in that the relation of the loss tangent value obtained by dynamic viscoelasticity measurement with the temperature satisfies specific conditions, or a composition containing the copolymer composition as an essential component, a heat shrinkable (multilayer) film with less spontaneous shrinkability and less odor while maintaining favorable low temperature shrinkability can be obtained.

The invention discloses plastering gypsum and a preparation method thereof, and relates to the technical field of gypsum. The plastering gypsum comprises the following raw materials in parts by weight: 55-65 parts of desulfurated gypsum, 40-42 parts of modified rubber powder, 34-36 parts of cement, 24-26 parts of liquid paraffin, 20-22 parts of modified kieselguhr, 18-20 parts of mineral admixture, 14-16 parts of manganese slag, 10-14 parts of an auxiliary agent and 45-65 parts of water. The plastering gypsum is adhered to a base wall well, a coating cannot crack and cannot drop easily, and construction is facilitated.

The invention discloses a waterborne binder for tile. The waterborne binder comprises an acrylic pressure-sensitive adhesive, hydroxypropyl methyl cellulose, polyvinyl alcohol (PVA) powder, water, an antifoaming agent, an antiseptic, a styrene-acrylic emulsion and an antifreezing agent. The above components are subjected to mechanical processing so as to prepare the waterborne binder for tile. The waterborne binder for tile has good thixotropic performance, improved shrinkage and cracking resistance, enhanced surface quality, improved bonding strength, good smoothness in brushing and excellent tile wettability and spreadability; with the binder, the tile is hard to slide and not prone to the phenomena of hollowing, tile falling and the like after bonded onto a wall; and the binder has good bonding performance, high strength, good resistance to water, freezing and thawing and ageing and allows the surface of the bonded tile to be easy to clean due to usage of the antifoaming agent as the component.

The invention relates to a low-cement refractory castable for pumping construction, which comprises a dry material and an additive, the dry material comprises the following components in parts by weight: 55-68 parts of refractory aggregate, 12-27 parts of refractory powder, 3-10 parts of superfine powder and 1-9 parts of binding agent, the additive comprises fibers and a composite additive, the weight of the fibers is 0.01-3% of the weight of the dry material, the weight of the composite additive is 0.1-0.5% of the weight of the dry material, and the weight of the water is 5-12% of the weight of the dry material. The invention provides the low-cement refractory castable with the volume density of 2.2-2.8 g / cm3, the castable makes up the defect that the traditional low-cement refractory castable cannot be pumped, realizes the pumping of the low-cement refractory castable, is convenient for on-site pouring construction, solves the difficult problem of vertical conveying of the refractory castable of a high and large furnace body, reduces the workload of workers, and improves the pouring efficiency; and the stirred material reaches the working surface within a short time, so that the working surface can be prevented from being added with water again, and the performance of the refractory lining is effectively ensured.

Disclosed is a photosensitive resin composition that includes (A) a cardo-based monomer represented by the following Chemical Formula 1 or 2, (B) a cardo-based resin, (C) a reactive unsaturated compound, (D) a pigment, (E) an initiator, and (F) a solvent, and a light blocking layer using the same. In Chemical Formulae 1 and 2, each substituent is the same in the detailed description.

The invention discloses a preparation method of a fireproof, heat-resistant and light-weight partition plate, and relates to the technical field of partition plates. The preparation method comprises the following steps: (1) preparing a fiber enhancer; (2) preparing modified expansible graphite; (3) preparing a flame-retardant covering agent; (4) preparing a matrix; and (5) preparing a finished product. The fireproof, heat-resistant and light-weight partition plate is excellent in fireproofing and heat resisting performance and high in stability, difficult to deform under heat, and safe and convenient to use.

The invention relates to a compound type thickening agent applicable to common wet-mixed mortar. The compound type thickening agent applicable to common wet-mixed mortar is characterized by being prepared by mixing a raw materials including 35-54 parts of lithium slags by weight, 5-8 parts of siliceous dust by weight, 4-6 parts of zeolite powder by weight, 0.5-1.4 parts of melamine water reducer by weight, 0.03-0.05 part of polyacrylamide by weight, 1.20-2.80 parts of sodium gluconate by weight, 0.04-0.09 part of sugar by weight and 0.006-0.010 part of triterpenoid saponins by weight. The raw materials are weighted according to the mass proportioning, added in a mixing machine and fully mixed to be uniform, and then the product of the compound type thickening agent can be obtained. The compound type thickening agent can obviously improve the water-retaining property, the cohesiveness and the softness of the common wet-mixed mortar, and enable the common wet-mixed mortar to obtain not only excellent working properties which can meet construction requirements but also better anti-compression strength, cohesive strength and anti-contraction property; and the compound type thickening agent can be applicable to ground mortar, masonry mortar and plastering mortar in the common wet-mixed mortar.

The invention provides a coarse composite foaming material for sneaker soles as well as a preparation method and application of the coarse composite foaming material. The material is prepared by foaming an expandable elastomer composite material, wherein the expandable elastomer composite material is prepared from the following components in parts by mass: 15 to 25 parts of a polyolefin elastomer,20 to 45 parts of an ethylene vinyl acetate copolymer, 15 to 35 parts of an olefin block copolymer, 5 to 10 parts of polyethylene, 2 to 8 parts of calcium carbonate, 0.6 to 1.5 parts of nano active zinc oxide, 0.5 to 0.8 part of a stearic acid, 0.5 to 0.8 part of a cross-linking agent and 3 to 5 parts of a coarse foaming agent. The coarse composite foaming material for the sneaker soles has an open spherical foam structure. The coarse composite foaming material provided by the application has the advantages of excellent rebound performance, compression resistance, lower density, capability ofachieving high light transmission, unique appearance effects and facilitation for producing high-quality sneaker soles.

The invention discloses a cement-based tile adhesive. The adhesive comprises composition prepared from raw materials in percentage by mass as follows: 80.00%-90.00% of ordinary Portland cement, 5.00%-10.00% of low-alkalinity sulphoaluminate cement, 2.00%-10.00% of redispersible latex powder, 1.25%-2.00% of cellulose ether, 0.25%-0.50% of guar gum powder, 1.00%-6.00% of an early strength agent, sand and water, Wherein the mass ratio of the composition to the sand is 1:4, and water accounts for 10%-15% of the total mass. Compared with the prior art, the cement-based tile adhesive has the advantages that the amount of aggregate (sand) in a formula is increased to 65% or above, the shrinkage of the system is well reduced, so that the tile adhesive can be thick, and the production cost is greatly reduced.

The present invention relates to the technical field of premixing mortar, particularly dry mixed ground mortar for effectively solving dusting and peeling of a ground. The mortar comprises the following components in percentage by mass: 40%-60% of limestone rock machine-made sand, 20%-30% of yellow sand, 3%-7% of coal ash, 15%-21% of cement and the balance of an additive, wherein the additive is a modifying agent and a thickening agent; the modifying agent is one of or a mixture of cellulose ether, an air entraining agent or a water reducing agent.

The invention discloses a formula of a gypsum binder. The gypsum binder comprises the following raw materials in parts by weight: 100 parts of desulfurized gypsum, 0-5 parts of polyvinyl alcohol, 0.1-0.7 part of methyl cellulose and 0-0.2 part of sodium citrate. The dry powder is evenly stirred and mixed to obtain the product. The test report indicates that the initial setting time is 30-100 minutes, the final setting time is 45-115 minutes, the folding strength is 2.3-2.9 MPa, the compression strength is 5.5-6.5 MPa, and the bonding (compression shear) strength is 0.40-0.9 MPa. The invention has the advantages of favorable stability, water retention and flow slide property, strong binding performance and favorable affinity, has the function of interfacial activity and greatly enhances the adhesive force between the product and the base material; and the invention has stable pH values, favorable lubricating property, favorable shrink resistance, favorable mildew resistance and the like, and does not need to use gauze at the seam, thereby having the advantages of firm binding and slight expansibility and preventing the phenomenon of cracking.

The invention relates to a low-temperature plasma pre-treatment process which is characterized by comprising the following steps: sorting wool; washing wool; drying; carrying out low-temperature plasma treatment; sizing and the like. The invention is the low-temperature plasma pre-treatment process which is clean and uniform to treat and has water-saving and energy-saving effects, and the surface hydrophilic performance of spinnable blanket wool (yak hair, wool, camel hair and the like) is effectively improved, so that the dyeing property of the wool is improved, and the dyeing, coating and bonding performances are improved.

A high-twisted multi-strand knitting yarn is composed of three fibres, and features that its one fibre is acrylic fibre filament and another two are chosen from silk, bamboo fibre and wood pulp fibre. Its production technology includes pre-treating and double-twisting. The fabric made of it features high air permeability, hydroscopicity, and shrinking resistance.

The invention relates to an anti-shrinkage shock-absorbing EVA foamed material. Raw materials in parts by mass are as follows: 40-80 parts of butadiene styrene rubber, 5-10 parts of EVA, 2-5 parts of azodiisobutyronitrile, 0.1-0.5 part of dibenzoyl peroxide, 0.2-0.7 part of titanium dioxide particles, 1-4 parts of dicumyl peroxide, 1-4 parts of talcum powder, 8-12 parts of polyacrylonitrile fibers, 0.8-2.1 part of an initiator and 1.3-1.8 parts of a catalyst. The anti-shrinkage shock-absorbing EVA foamed material provided by the invention is soft in texture and has better shrinkage resistance, fatigue resistance is improved, shock-absorbing performance is also better, and cost is lower.

The invention discloses high-performance concrete pavements enhanced by hybrid fibers and particularly discloses pavement concrete to which modified polypropylene crude fibers and polymer micro fibers are added.The modified polypropylene crude fibers are prepared in a mode that an organic modifying agent, a silane coupling agent and inorganic modified filler are subjected to melt-spinning and cold-stretching after being modified.The modified polypropylene crude fibers can effectively limit and delay generation and development of macrocrack; the polymer micro fibers can block expansion of original defects and micro cracks of concrete.The modified polypropylene crude fibers and the polymer micro fibers work in a cooperative mode, a hybrid effect can be generated, and crack resistance, stretch resistance, impact resistance, wear resistance, seepage resistance, bending resistance, fatigue resistance, shrinkage resistance, corrosion resistance, freeze thawing resistance and the like of concrete are greatly improved.The concrete can be widely applied to concrete pavements, such as a road pavement, a bridge floor, an airfield pavement, an urban road pavement, a port pavement, a traffic tunnel and an industrial building ground, engineering quality of the concrete pavements is remarkably improved, and the service life is prolonged.

The invention relates to the technical field of furniture surface treatment, in particular to a wooden furniture surface coating material. The wooden furniture surface coating material is prepared from a main agent and a curing agent, wherein the main agent is prepared from, by weight, 50-60 parts of saturated polyester resin, 5-10 parts of dimethylglyoxime, 3-5 parts of phosphoric acid triallyl ester, 2-4 parts of white corundum, 1-6 parts of attapulgite, 0.5-1.0 part of copper naphthenate, 0.2-0.4 part of cobalt iso-octoate and 2-6 parts of titanium dioxide, the curing agent is prepared from, by weight, 10-20 parts of methyl ethyl ketone peroxide, 5-8 parts of gas phase SiO2, 15-25 parts of dibutyl terephthalate and 0.1-0.3 part of polyvinylpyrrolidone. According to the wooden furniture surface coating material, no deformation or contraction of a base material will be caused in the base material treatment process, and therefore the decorative coating is not broken.

The invention discloses a PE protective film and relates to the field of protective films, aiming to solve the problem that the end edge of the existing PE protective film is easy to tilt during use.The technical scheme includes that the PE protective film comprises a PE base layer, a jointing layer, an adhesive layer, an retraction-resistant layer and a protective layer, wherein the jointing layer and the adhesive layer arranged on the inner side of the PE base layer, the retraction-resistant layer and the protective layer are arranged on the outer side of the PE base layer; the PE base layer is prepared from, by weight, 35-65 parts of low-density polyethylene and 12-35 parts of high-density polyethylene; the retraction-resistant layer comprises, by weight, 30-45 parts of thermosetting phenolic resin and 12-45 parts of penetrating agents; the jointing layer comprises, by weight, 12-35 parts of low-density polyethylene and 5-25 parts of cross-linking agents; the adhesive layer is prepared from, by weight, 23-45 parts of silicone pressure sensitive adhesive and 12-35 parts of antiagers; the protective layer comprises, by weight, 20-57 parts of polycarbonate and 7-22 parts of dimethyl siloxane. Retraction in use of the PE protective film can be effectively suppressed, and the adhesive layer of the PE protective film is not easy to fall off, which facilitates application of the PE protective film.

The invention relates to the field of display technology, in particular to UV glue for package and a preparation method thereof. The UV glue for package is prepared from an acrylic ester prepolymer, modified bisphenol-A epoxy resin, a reactive diluent, a photoinitiator, an addition agent, and inorganic porous particulate matter.

The invention relates to a cable material and in particular relates to an inorganic modified high heat-resistant low-shrinkage low-smoke halogen-free flame retardant polyolefin cable material and a preparation method thereof. The formula of the inorganic modified high heat-resistant low-shrinkage low-smoke halogen-free flame retardant polyolefin cable material comprises 100 parts of matrix resin, 120-160 parts of fire retardant, 10-30 parts of inorganic imvite, 1-4 parts of lubricant and 1-3 parts of antioxidant; the preparation method of the cable material comprises the steps of firstly, stirring the raw materials in a high-speed mixer evenly, secondly, banburying in a temperature interval from 110 to 130 DEG C by use of a Banbury mixer, and then feeding by use of a twin-screw feeder, extruding by use of double screws, molding by use of a single screw, hot cutting and pelleting by use of a grinding surface, conveying by use of a cyclone separator, sieving by use of a vibrating sieve and then packaging to obtain the finished inorganic modified high heat-resistant low-shrinkage low-smoke halogen-free flame retardant polyolefin cable material. Compared with a common low-smoke halogen-free flame retardant polyolefin cable material, the thermal aging resistance of the inorganic modified high heat-resistant low-shrinkage low-smoke halogen-free flame retardant polyolefin cable material is improved and the shrinkage performance of the cable material is greatly improved, and therefore, the problem of easy shrinkage of the low-smoke halogen-free polyolefin cable materials at high temperatures is solved.