176results about How to "Low water absorption" patented technology

The invention relates to an epoxy resin composition as well as a prepreg and a laminated board made of the same. The epoxy resin composition comprises the following components in parts by weight: 1-50 parts of modified polyphenylene oxide resin, 30-80 parts of epoxy resin, 20-60 parts of active ester curing agent, 0-50 parts of filler and 1-20 parts of assistant. The prepreg made of the epoxy resin composition comprises a base material and the epoxy resin composition which is attached to the base material through soaking and drying. The laminated board made of the epoxy resin composition comprises a plurality of laminated prepregs, wherein each prepreg comprises a base material and the epoxy resin composition which is attached to the base material through soaking and drying. The invention has the advantages of high heat resistance, high fire retardancy, low dielectric constant, low dielectric loss, excellent high-frequency dielectric properties and the like, and is suitable to be used as a high frequency circuit substrate material.

The invention relates to a resin composition for an embedded capacitor, and a dielectric layer and a metal foil-clad plate manufactured by using the same. The resin composition for the embedded capacitor comprises the following components in percentage by weight: 5 to 60 percent of epoxy resin, 5 to 45 percent of at least one of phenoxy resin and carboxyl-terminated nitrile butadiene rubber, 2 to 45 percent of biphenyl phenolic resin or naphthalene phenolic resin and 5 to 85 percent of high-dielectric constant fillers. The dielectric layer manufactured by using the resin composition for the embedded capacitor is a resin sheet or resin composite metal foil; the resin sheet comprises a carrier film and the resin composition for the embedded capacitor coated on the carrier film; and the resin composite metal foil comprises metal foil and the resin composition for the embedded capacitor, which is coated on the metal foil.

The invention discloses a modified vitrified micro bubbles thermal insulation mortar and a preparation method thereof. The steps of the preparation method are as follows: (1) modifying low quality vitrified micro bubbles: organic silicon hydrophobic agent is diluted by water, and the volume ratio between the hydrophobic agent and the water is 1: 10-1: 80 and the diluted hydrophobic agent is sprayed uniformly on the low quality vitrified micro bubbles; (2) drying: the vitrified micro bubbles treated by the hydrophobic agent is put into an oven for drying; (3) compounding the thermal insulation mortar: the master batch of the mortar and the modified vitrified micro bubbles are stirred uniformly according to the weight ratio 1:2-2:1, thus obtaining the modified vitrified micro bubbles thermal insulation mortar. The method can not only decrease the water absorption of the low quality vitrified micro bubbles but can also keep certain water-retaining rate; furthermore, the method also can decrease the thermal conductivity of the thermal insulation mortar and has simple production technique and obvious effect. The thermal conductivity of the thermal insulation mortar made by low quality vitrified micro bubbles not only meets the national quality standards, but also greatly reduces cost, thus being more easily to be popularized.

The invention provides a method of producing foam glass with copper tailings. The copper tailings, waste glass, coal black, sodium fluosilicate and sodium phosphate are added in a heat-resistant steel die after being put in a ball milling tank to be milled into 200 orders below. Then, the die is moved into a foaming furnace to obtain foam glass through the preheating, the foaming, the foam stabilizing and the annealing. The invention uses industrial waste copper tailings as raw materials to prepare the foam glass, added with a little additive. The invention is beneficial to the waste utilization and the environment protection. And the obtained foam glass has the advantages of structure with high strength, low water absorption rate, small density and low thermal conductivity. The invention can effectively lower the production cost of the foam glass, protect the environment and change wastes into valuables. The properties of the produced foam glass are that the density is smaller than 0.8g/cm<3>, the water absorption rate is smaller than 1.5vol percent, the average foam diameter is 1-3mm, and the flexural strength can reach to 2.0MPa.

The invention discloses a two-component PU (polyurethane) coating. Firstly, castor oil is used for cross-linking prepolymers: a multifunctional group structure in the castor oil can cross-link the polymers to a certain extent, the cross-linking degree of the polymers is increased, so that the interaction force among molecular chains is increased, motion of the molecular chains is hindered, water molecules can hardly enter the molecular chains to enable the polymers to swell, and the water absorption of a film is reduced; meanwhile, the castor oil is a triglyceride of fatty acid, the film has the good hydrophobicity due to long nonpolar fatty acid chains in molecules of the castor oil, and the water absorption is further reduced; besides, ester groups in the castor oil have higher cohesive energy, so that the tensile strength of the film can be enhanced; ethyl cellulose has better heat resistance and thermoplasticity, has good compatibility with PU and can improve the comprehensive performance of the prepolymers; then blending modification is performed on the PU prepolymers and polysilsesquioxane.

The invention discloses a low-warpage halogen-free flame retardant reinforced polyamide composite material, which comprises the following components by weight: 15-40% of resin substances, 5-15% of halogen-free flame retardants, 50-70% of filling reinforcing agents, 5-10% of other additives. The preparation comprises the following steps: weighing the raw materials according to the weight ratios, well mixing the resin substance and other additives in a high-speed mixer, pouring the premix into a main hopper of a twin-screw extruder for charging; performing extrusion by the twin-screw extruder, performing granulation to obtain the low-warpage halogen-free flame retardant reinforced semi-aromatic polyamide composite material. The advantages of the invention are that: 1. with the introduction of milled glass fiber, the composition has lower warpage, low water absorption, good surface, and excellent processing forming and mechanical properties; 2. the addition of free-flow fluorine polymer can improve the melt fracture phenomenon during the processing process, and with the combination with milled glass fiber, the particle appearance of the material can be improved.

The invention discloses a novel special inorganic hole-sealing agent for a thermal-spraying coating as well as a preparation method and an application thereof. The special inorganic hole-sealing agent is prepared from the following raw materials in percentage by weight: 30-38% of SiO2, 3-8% of Al2O3, 15-19% of B2O3, 16-20% of Na2CO3, 2-5% of CaF2, 5-8% of ZnO, 2-3% of Ni2O3, 4-7% of Na5P3O10, 3-5% of TiO2 and 1% of CoO; and during preparation, the raw materials aforementioned are mixed, heated to 500-600 DEG C and insulated for 20-30 minutes, then heated to 800-900 DEG C and insulated for 1-2 hours, water-quenched, and ball-milled to obtain minus 325-mesh powder, and the powder is added in 40wt% anhydrous alcohol and then sealed and stood. The hole-sealing coating treated by the hole-sealing agent disclosed by the invention is of an amorphous structure, excellent in corrosion resistance and good in thermal stability.

The invention provides a benzimidazole-substituted polyimide, a preparation method thereof, a benzimidazole-substituted polyimide film, and a preparation method and an application of the film, and belongs to the technical field of polyimide materials. The glass transition temperature of the benzimidazole-substituted polyimide film is 328-431 DEG C, the 5% thermal decomposition temperature is 498-537 DEG C, the tensile strength is 69-190 MPa, the tensile modulus is 3.5-6.2 GPa, the water absorption rate is 1.12-1.78%, the thermal expansion coefficient is 2.5-48.0 ppm/K, and the film is thermally soluble in m-cresol, N-methylpyrrolidone, dimethyl sulfoxide, N,N-dimethylformamide, N,N-dimethylacetamide and tetrahydrofuran organic solvents. The benzimidazole-substituted polyimide film providedby the invention has the advantages of high thermal stability, good dimensional stability, low water absorption rate, excellent mechanical properties, and good solubility in organic solvents.

The invention relates to an energy-saving self-heat-insulation ceramsite building block and its manufacturing method and forming mould. The energy-saving self-heat-insulation ceramsite building block is made of, by weight, 35-50% of ceramsite, 20-29% of cement, 15-30% of coal ash, 0.5-1% of fibers, 2-5% of foaming agent, 0.3-0.5% of water reducing agent, 0.1-0.3% of waterproof agent and 0.2-0.5% of catalyst, wherein the volume of the ceramsite accounts for more than 80% of that of the whole building block. The manufacturing method of the building block includes steps of material selecting, metering, stirring, pouring, vibrating, steaming, tube drawing for demoulding, cutting forming and stacking for rest. The forming mould of the building block can be used for once forming of multiple medium-sized rectangular ceramsite building blocks, and each building block can be conveniently cut into standard small ceramsite building blocks. The energy-saving self-heat-insulation ceramsite building block is high in ceramsite content and has the advantages of light weight, warm retention, heat insulation, sound insulation, sound adsorption, low water adsorption, fire resistance, freezing resistance, quake proofing, corrosion resistance and the like.

The invention provides a control method and a control device for a cooking device. The control method for the cooking device comprises the following steps of receiving the cooking mouth feel selected by a user; according to the cooking mouth feel, controlling the sustaining time of the cooking device in the water absorbing phase, so as to control the mouth feel of the cooked object in the cooking device. By adopting the technical scheme, the control method has the advantages that the corresponding heating method is adopted according to the different cooking mouth feels selected by the user; the cooking mouth feel of the cooking device is intelligently controlled; the different requirements of a user are met, and the user experience is improved.

The invention provides a polyamide hot melt adhesive and application thereof. The polyamide hot melt adhesive contains (1) dicarboxylic acid copolymerization units which comprise, on the basis of the total mole percent of the dicarboxylic acid copolymerization units, (a) 50 to 90 mol% of dimeric acid copolymerization units and (b) 10 to 50 mol% of C6-C14 aliphatic dicarboxylic acid copolymerization units, and (2) diamine copolymerization units which comprise, on the basis of the total mole percent of diamine copolymerization units, (c) 70 to 95 mol% of C2-C8 aliphatic or cycloaliphatic diamine copolymerization units and (d) 5 to 30 mol% of aromatic diamine copolymerization units; and number-average molecular weight Mn of the polyamide hot melt adhesive is 3000 to 20000. The polyamide hot melt adhesive provided in the invention has lower water absorption, better rub resistance, oil resistance and chemical resistance and higher hardness and can be used in, for example, the field of capsulation of electronic products.

The invention relates to a fireproof heat-insulating material as well as a preparation method and application thereof. The fireproof heat-insulating material comprises the following components in percentage by weight: 10-30 percent of monrolite, 10-40 percent of glazed hollow bead, 10-20 percent of pumice, 10-20 percent of vermiculite, 5-20 percent of hydroxypropyl methyl cellulose, 5-20 percent of renewable dispersed emulsion powder, 5-20 percent of cement, 10-20 percent of rubber powder and 5-10 percent of vesicant. The fireproof heat-insulating material is mixed with water to prepare fireproof heat-insulating mortar which is directly smeared on the surface of a wall body. The fireproof heat-insulating material has the advantages of low cost, low water absorption, low coefficient of heat conductivity, stability and favorable heat-insulating and fire resisting effects; and the obtained product is granular and is convenient to transport.

The invention discloses copolymerization transparent nylon which is mainly composed of a component A and a component B through condensation polymerization. The component A is a salt which is formed by polymerizing aromatic binary acid and 2-methyl pentanediamine; and the component B is a salt which is formed by polymerizing diaminosiloxane and aliphatic binary acid. The preparation method includes the steps of: adding the aromatic binary acid and the 2-methyl pentanediamine into an auto-control polymerization kettle with a stirrer to perform a reaction to obtain the component A; adding the aliphatic binary acid and the diaminosiloxane into the auto-control polymerization kettle with the stirrer to perform a reaction to obtain the component B; and feeding a catalyst, an initiator, the component A and the component B into a high-pressure reaction kettle to perform a polymerization reaction to produce the copolymerization transparent nylon. The copolymerization transparent nylon has better transparency, lower water absorption rate and higher heat resistance than semi-aromatic transparent nylon 6T/6I and cycloaliphatic transparent nylon.

The invention discloses a hollow vitrified micro bubbles heat preservation and insulation composite material which comprises vitrified micro bubbles and a cementing material, the vitrified micro bubbles are taken as a light aggregate of mixed mortar and mixed with the cementing material. The hollow vitrified micro bubbles heat preservation and insulation composite material is characterized in that contents of the vitrified micro bubbles and the cementing material are 20-50 parts of the vitrified micro bubbles and 40-55 parts of the cementing material respectively; the cementing material is a mixture of cement, sand, a foaming agent and a water-proofing agent, and the cementing material consists of the 40-60 parts of the cement, 2.5-3.3 parts of the sand, and a proper amount of the foaming agent and the water-proofing agent. The hollow vitrified micro bubbles heat preservation and insulation composite material has the advantages of good heat preservation, heat insulation, fire prevention and construction properties, is insusceptible to the biting of insects and ants, and is economical and environment-friendly.

The invention discloses a POSS/casting nylon 6 nano composite material and preparation method and thereof. The preparation method comprises the following steps: adding POSS, water and an organic modifying agent in a kettle A containing caprolactam monomers, heating to the temperature of 70-85 DEG C, stirring for 0.5-2 hours, carrying out vacuumizing for 15-60 minutes, heating to the temperature of 130-140 DEG C, adding an initiator, and carrying out vacuumizing reaction for 15-30 minutes; heating a kettle B containing caprolactam monomers until the monomers are melted, carrying out vacuumizing, adding a catalyst after the monomers are totally melted, heating to the temperature of 130-140 DEG C, and carrying out vacuumizing for 10-15 minutes; and finally mixing the compound in the kettle A with the compound in the kettle B, pouring the mixture in a mold at the temperature of 150-170 DEG C for polymerization molding, and carrying out demolding after insulating for 10-60 minutes. By a frame structure of POSS and organic functional groups thereof, and a nylon molecular chain and POSS form an interpenetrating polymer network structure and are bonded chemically. The prepared nano composite material is low in water absorption, good in thermal stability, high in wear resistance and god in comprehensive property.

The invention discloses self-adjusting energy-saving paint which comprises the following components in parts by weight: 30-45 parts of redispersible latex powder, 10-15 parts of POE (polyolefin elastomer), 1-3 parts of nano organic montmorillonite, 9-15 parts of talcum powder, 3-8 parts of zinc stearate, 5-8 parts of calcium stearate, 6-10 parts of stearic acid, 3-15 parts of polypropylene ester, 9-16 parts of modified polypropylene, 3-15 parts of poly-4-methyl-1-pentylene, 8-16 parts of active calcium, 9-13 parts of stearic acid, 30-50 parts of cement and the like. The invention has the advantages of heat insulation, fire prevention, high temperature resistance, aging resistance and low water absorptivity; the construction method is simple and convenient, and can be performed by manually plastering; and the self-adjusting energy-saving paint is favorable in heat insulation and warm keeping effect, and can be widely used for wall surfaces, roofs and any other building heat insulation layer.

The invention relates to a method for manufacturing a natural-like stone ceramic tile with clear color and luster and boundary. The ceramic tile comprises the following main raw materials in percentage by weight: 10 to 15 percent of low-temperature porcelain powder, 10 to 20 percent of medium-temperature porcelain sand soil, 9 to 18 percent of high-temperature porcelain sand, 10 to 15 percent of washed black mud, 10 to 15 percent of albite powder, 5 to 10 percent of alumina porcelain sand, 10 to 20 percent of sodium porcelain sand, 5 to 18 percent of ball clay, 0.5 to 1 percent of liquefaclent and 0.5 to 1.5 percent of pigment; a process flow of the manufacturing method comprises : material selection, material burdening, ball milling, toning, pulverization, cloth pressing, drying, sintering, polishing, sorting, packaging and warehousing; a sprayed micron antifouling coating process is added between a cloth pressing process and a drying process; the cloth pressing process comprises: powder crushing, full automatic computer-controlled vertical blanking, dropping of line micropowder cloth in a mould, distribution of a base material, and pressing and molding; slurry comprises the following components in percentage by moisture mass: 34 to 36 percent of base material and 32 to 34 percent of ice-thoroughly material; and powder (the fineness is about 250-mesh sieve ) comprises the following components in percentage by weight: 0.8 to 1.0 percent of base material and 0 percent of ice-thoroughly material.

The invention discloses a glass fiber-enhanced montmorillonite-modified nylon composite material with low water absorption and high dimensional stability and a preparation method thereof. Montmorillonite-modified nylon compound, lubricant and antioxidant are uniformly mixed and then added via the feed inlet of an extruder, glass fibers are added into the double-screw extruder via the side feed inlet, and after extrusion and pelleting, the glass fiber-enhanced montmorillonite-modified nylon composite material is obtained. With the organic montmorillonite-modified nylon prepared by a melt intercalation method as a matrix, the prepared glass fiber-enhanced montmorillonite-modified nylon composite material has higher degree of crystallinity, modulus and strength, higher dimensional stability and low water absorption in comparison with conventional glass fiber-enhanced nylon materials.

The plastic float producing process is disclosed, and the plastic float as one kind of water floated product consists of casing of polyethylene and stuffing of foamed polystyrene. The production process includes pre-foaming polystyrene beads, maturing the polystyrene beads, filling into the plastic casing, mounting in foaming mold, installing gas inlet and outlet pipes, introducing steam to heat and form, cooling to settle and other steps. The plastic float has low cost, low water absorption and great buoyancy.

The invention discloses a tipipenem ester preparation and a preparation method thereof. The tipipenem preparation is made of granules, a first coating layer and a second coating layer; the granules are made of tipipenem, D-mannitol, microcrystalline cellulose, sucrose and hydroxypropyl Cellulose composition; The first coating layer is made up of ethyl cellulose suspension, talcum powder, hydroxypropyl cellulose and purified water; The second coating layer is made of ethyl acrylate-methyl methacrylate Composition of aqueous copolymer dispersion, talc, hydroxypropyl methylcellulose, aspartame and purified water. The granule that the present invention makes has carried out two-layer coating; Wherein ethyl cellulose is nontoxic, has no pharmacological activity, is ideal insoluble material; And ethyl acrylate-methyl methacrylate copolymer aqueous dispersion is used as granule The film-coating material of gastric dissolving type such as, the film formed can resist saliva, so when taking, can mask the uncomfortable smell of medicine. It is insoluble in water and digestive fluids, but swells and is permeable.

The invention provides a polyarylether containing a quaternary ammonium side group and its preparation method, an anion exchange membrane preparation method, and an anion exchange membrane prepared through the anion exchange membrane preparation method. The polyarylether has a structure represented by formula (1); and in the formula (1), R1 is a C2-C5 alkylidene group with a hydroxy group, R2-R4 are C1-C5 alkyl groups, X is halogen, n is not lower than 2, Ar1 has one or more of structures represented by formula (2)-formula (4) respectively, and R5-R28 are H, halogen or C1-C5 alkyl groups respectively. The anion exchange membrane has the advantages of high ion conductivity, low water absorption and inhibited swelling.

The invention discloses a production method of a phenolic foam wall insulation material. The production method comprises (1) preparing raw materials of phenol, paraformaldehyde for industrial purposes, sodium hydroxide, acrylamide and water, (2) putting phenol, sodium hydroxide and water into a reactor, heating, and adding slowly paraformaldehyde for industrial purposes into the reactor, (3) putting acrylamide into the reactor and heating slowly, (4) adding water, chloropropylene oxide and sodium hydroxide into the reactor, heating and stirring, (5) cooling, adding formic acid into the reactor and carrying out dehydration, and (6) mixing an epoxy modified phenolic resin obtained by the step 5, an organic silicone foam stabilizer, n-pentane and one or more of p-toluenesulfonic acid, benzenesulfonic acid, phosphoric acid and sulfuric acid, and pouring the mixture into a mold for foaming to obtain a desired product. The phenolic foam wall insulation material produced by the production method has the advantages of low cost, energy saving and fire resistance. Compared with similar products, the phenolic foam wall insulation material has low water absorption and strong ageing resistance, and thus the phenolic foam wall insulation material can be utilized widely for the field of thermal insulation building walls.

The present invention discloses a method for preparing damp-proofing gypsum block. Said method uses building gypsum and blast-furnace slag (ground fly ash and bauxitic clay can be substituted for them) as main raw material, and adopts the following steps: adding lime or carbide slag and aluminium sulfate or alunite as exciting agent, adding water and stirring them, pouring and forming, demoulding and drying so as to obtain the invented damp-proofing gypsum block whose water-absorbing rate is 37%.

The invention provides a deep-sea pressure-proof machinable buoyancy material, comprising the processing steps of 1) mixing and stirring; preparing materials according to the components; adding the materials to a vacuum kneading machine to evenly stir; 2), stirring and defoaming in vacuum; after mixing and stirring, sealing and covering the vacuum kneading machine to vacuumize, and continuing to stir the materials; 3), discharging, transferring the materials which are stirred and defoamed in vacuum into a die to mold; and 4) demolding, demolding after the materials are thoroughly cured, wherein the materials molded in the die in step 3) also comprise vacuum vibrating defoaming. The material also has the characteristics of low water absorption, and can be used for manufacturing a submersible vehicle in 500-7000m of deep-sea area; and the problems that the similar material in the prior art is large in air bubble content and difficult to remove are solved by a technology which is not complicated through vacuum agitation and vacuum vibrating defoaming technologies in process.

The invention discloses a mud material for producing a gangue baked perforated insulating brick, comprising the following ingredients: 25-40 wt% of loess, 40-65 wt% of gangue, 5-15 wt% of small expended and vitrified ball, and water, wherein, the water content in the mud material is 10-15 %. According to the invention, blank making, air drying, seting, sintering, air cooling and kiln-out step can be carried out according to brickmaking method of the perforated brick in the prior art, wherein, the sintering temperature is controlled to 850-1100 DEG C, and the sintering time is controlled to 6-8 h. Detection result shows that the produced perforated brick by the method disclosed herein has the compressive strength of a compression face being 6.5 MPa, the water absorption being less than 18.3 %, the thermal resistance being no less than 1.1, and the dry shrinkage being less than 0.03 %. The produced perforated brick has the advantages of light weight, heat preservation, thermal insulation, fire resistance, aging resistance, low water absorption, low dry shrinkage and the like. The use of the perforated insulating brick in building construction can reduce the deadweight of the building, and has good heat preservation and fire resistance.

The invention provides two fluoric dianhydride monomers and a preparation method, belonging to the technical field of organic compound and preparation thereof. The fluoric dianhydride monomers are 4,4'-(2-(3'- trifluoromethyl-phenyl)-1,4-phenoxy)-phthalic anhydride and 4,4'-(2-(3',5'- Di(trifluoromethyl)-phenyl)-1,4-phenoxy)-phthalic anhydride. The preparation method is as follows: taking 2-(3'-trifluoromethyl-phenyl)-1,4-hydroquinone or 2-(3',5'-Di(trifluoromethyl)-phenyl)-1,4-hydroquinone as a raw material to prepare tetranitrile monomer; hydrolyzing the tetranitrile monomer under backflow of the mixed solution of potassium hydroxide, water and alcohol to prepare tetracid monomer; and refluxing, dehydrating and recrystallizing on the tetracid monomer to obtain the product. The invention has the advantages of simpler synthesis route, stable raw material monomer at room temperature, easy separation of products and lowered cost; the product can be applied in the field of preparing polyimide hyperbranched waveguide materials.

The invention relates to the field of high polymer material processing, and discloses a modified PA6/PA12 alloy material with low water absorption and a preparation method thereof. The alloy materialcomprises the following components in parts by weight: 50 to 65 parts of PA6 resin, 5 to 10 parts of PA12 resin, 3 to 10 parts of a flexibilizer, 0.1 to 1 part of lanthanum oxide, 25 to 35 parts of glass fiber, 0.1 to 0.5 part of an antioxidant and 0.1 to 0.5 part of a lubricating agent. The invention also discloses a preparation method of the modified PA6/PA12 alloy material with low water absorption. The modification of the compound material is carried out on a compound toughening system and the lanthanum oxide while the alloy is compounded through PA6 and PA12, so that the water absorptionof the material is greatly reduced while the compound material reaches the performance of an existing PA6 product. The PA6 material with low water absorption has relatively low shrinking percentage, and the problem of dimensional shrinkage, generated by water absorption, of a nylon product is solved.

The invention discloses an organic-inorganic composite water repellent for light heat insulation blocks, which is prepared by uniformly mixing the following raw materials in percentage by mass: polymer emulsion 10.0-60.0, common construction cement 30.0-70.0, dispersant 0.2-2.0, penetrant 0.5-10.0 and defoaming agent 0.1 to 2.0.

The invention discloses a light-weight heat-insulating wall body material. The light-weight heat-insulating wall body material is prepared from the following raw materials in parts by weight: 10 to 20parts of ceramic waste mud, 20 to 30 parts of ordinary portland cement, 15 to 28 parts of aluminum electrolysis waste refractory material, 5 to 10 parts of wood sawdust, 12 to 18 parts of building waste muck, 18 to 27 parts of coal ash, 10 to 20 parts of yellow sand, 15 to 30 parts of vitrified micro bubbles, 20 to 40 parts of bentonite tailing meal, 13 to 21 parts of modified sepiolite, 8 to 14parts of kaolin, 5 to 10 parts of borax, 2 to 3 parts of a foaming agent, 1 to 2 parts of a dispersing agent and 40 to 60 parts of water. The light-weight heat-insulating wall body material disclosedby the invention is light in weight, high in strength, low in water absorption rate, small in heat conductivity coefficient and high in heat-insulating performance, and can meet actual application requirements of a building material well.

The invention discloses an environment-friendly, heat-preserving and waterproof building composite board and a preparation method thereof. The environment-friendly, heat-preserving and waterproof building composite board is prepared from the following raw materials in parts by weight: 30 to 50 parts of portland cement, 10 to 15 parts of fiber, 5 to 10 parts of montmorillonite powder, 8 to 15 parts of rutile titanium dioxide, 12 to 15 parts of organosilicone modified epoxy resin, 12 to 18 parts of gypsum, 15 to 25 parts of melamine, 4 to 9 parts of polyester fiber, 10 to 20 parts of a sodium silicate solution, 2 to 10 parts of polyacrylamide, 1 to 8 parts of tributyl phosphate, 11 to 17 parts of acrylate and 2 to 8 parts of lightweight aggregate. According to the invention, the preparation process is simple and has low cost; and the prepared environment-friendly, heat-preserving and waterproof building composite board has the advantages of light weight, good waterproof and heat-preserving effects, strong chemical stability, and no toxicity and odor, and is an ideal heat-preserving material.