191results about How to "Play the role of flame retardant" patented technology

An epoxy resin mold plastic and its production are disclosed. The mold plastic consists of liquid-crystal epoxy resin, methyl-phenolic epoxy resin, epoxy resin containing biphenyl unit structure, melamine modified linear phenolic resin, silicone micro-powder, imidazo curing improver, toughening agent and silane coupling agent. The process is carried out by treating silicone micro-powder in mixer by coupling agent for 2-5mins, adding into other components, mixing for 3-5mins, melt milling at 95-135 degree for 3-5mins, cooling, crushing, mesh screening, pressing into material cake and storing below 6degree. Its advantages include low thermal expansion coefficient, excellent heat and fire resistances, better toughness and fluidity, no phosphor, no antimony and environmental pollution. It can be used to pack large-scale circuit and electronic devices.

The invention discloses environment-friendly flame retardant asphalt and a preparation method thereof. The flame retardant asphalt comprises, by mass, 100 parts of base asphalt, 2 to 15 parts of a fire retardant and 0.5 to 5 parts of a surface modified nano-material hydrotalcite. The preparation method comprises the steps of adding the fire retardant and the nano-material hydrotalcite into the base asphalt at a temperature of 120 to 180 DEG C and carrying out stirring for uniform mixing. According to the invention, the composition of asphalt has good flame retardant performance; additives used in the invention are environment-friendly, cost little and have good stability; a preparation process is simple.

The invention discloses an electronic flame-proof silicone sealing glue and manufacturing method, which comprises the following parts: 100 percent alpha, omega-bihydroxy polysiloxane, 1-50 percent polydimethylsiloxane, 60-200 percent aluminum hydroxide, 60-200 percent magnesium hydroxide, 2-15 percent cross linking agent, 0.2-4 percent silane cross linking agent, 0.1-5 percent catalyst, wherein the aluminum hydroxide and magnesium hydroxide proceed surface disposal. The manufacturing method comprises the steps: first. Synthesizing trimethoxy silane coupling agent with nitrogen; second. Disposing the surface of magnesium hydroxide or aluminum hydroxide; third. Making base material; fourth. Synthesizing the sealing glue.

The invention discloses halogen-free and flame-retardant hard polyurethane foam plastic and a preparation method thereof, relating to foam plastic. Raw materials include polyether polyol 4110, polymethylene polyphenyl isocyanate, a tertiary amine catalyst, dibutyltin dilaurate, a silicon-carbon bond foam stabilizer, 2,4,6-tri(dimethylaminomethyl)phenol, a foaming agent, octa-(3-hydroxyl-3-methyl butyl dimethylsiloxy)silsesquioxane, dimethyl methylphosphonate and micron-sized alpha-alumina trihydrate. The method comprises the following steps of: mixing the polyether polyol 4110, tertiary aminecatalyst, dibutyltin dilaurate, silicon-carbon bond foam stabilizer, 2,4,6-tri(dimethylaminomethyl)phenol, foaming agent, octa-(3-hydroxyl-3-methyl butyl dimethylsiloxy)silsesquioxane and micron-sized alpha-alumina trihydrate to obtain A; adding the dimethyl methylphosphonate into A to obtain B; and adding the polymethylene polyphenyl isocyanate into B, pouring into a mold for foaming, curing anddemolding to obtain the halogen-free and flame-retardant hard polyurethane foam plastic.

The invention discloses modified cyanate ester resin and a preparation method of the modified cyanate ester resin. The preparation method of the modified cyanate ester resin comprises the steps that by mass, 100 parts of molten cyanate ester resin and 0.503-4.167 parts of oxidized graphene-manganese-based metal organic framework hybrid body are evenly mixed, and the modified cyanate ester resin is obtained after curing. The oxidized graphene-manganese-based metal organic framework hybrid body is a hybrid material which is composed of oxidized graphene and a manganese-based metal organic framework, and the manganese-based metal organic framework is composed of manganous ions and an organic ligand through coordination bond. Compared with cyanate ester resin, the modified cyanate ester resin prepared with the method is lower in dielectric constant, lower in dielectric loss and better in fire resistance. The preparation method of the modified cyanate ester resin has the advantages that the technique is simple, cost is low, and the range of sources of raw materials is wide.

The present invention is the preparation process of composite inorganic flame retardant with nanometer attapulgite clay core and coating of Mg, Al, Sb, etc. The preparation process of the composite inorganic flame retardant includes the following steps: compounding water suspension of nanometer attapulgite clay with solid content of 10-200g / L; heating to 40-100 deg.c and coating the nanometer attapulgite clay with inorganic material Al2O3 hydrate, MgO hydrate, antimony oxide hydrate, ZnO hydrate and / or zinc borate via stirring; letting stand for the coated nanometer attapulgite clay to deposit; solid-liquid separation; filtering, washing, drying at 80-150 deg.c and crushing to obtain the composite inorganic flame retardant. The composite inorganic flame retardant of nanometer attapulgite clay has both flame retarding and excellent reinforcing effects.

The invention relates to high-strength two-phase ultralight magnesium lithium alloy and a preparation method thereof and belongs to the technical field of light metal material preparation. The high-strength two-phase ultralight magnesium lithium alloy disclosed by the invention comprises the following components in mass percent: 6.0-9.0 percent of Li, 1.0-6.0 percent of Al, 0.01-1.0 percent of Y and 0.21-0.5 percent of Ca. According to the preparation method disclosed by the invention, magnesium lithium alloy is smelted in a general resistance furnace by adopting a flux-covering and gas protection method, so that the high-strength two-phase ultralight magnesium lithium alloy with the room temperature tensile strength of 162-190Mpa, the yield strength of 150-170Mpa, the percentage elongation of 15-30 percent and the density of 1.43-1.48g / cm<3> is obtained. The preparation process is simple; the obtained products are excellent in performance and industrial production is facilitated.

The invention relates to a halogen-free flame-retardant styrene-series resin compound and a preparation method thereof. The resin composition comprises the following components in parts by weight: 40-80 parts of styrene system resin, 20-60 parts of a char forming agent, 0-5 parts of a compound char forming agent, 5-25 parts of a halogen-free flame retardant, 0.5-10 parts of a toughening agent, 0.1-0.5 part of an anti-falling agent, 0.1-1 part of an antioxidant and 0.2-2 parts of a lubricating agent. The preparation method comprises the following steps of: premixing the raw materials through a high mixer; performing melt extruding through a dual-screw extruder; and cooling and granulating to obtain a product. The obtained product is accordant with the requirements of halogen freeness and environmental friendliness, has superior flame retardance and mechanical performance, and can be used for office equipment such as copiers, printers, fax machines and the like, and household electrical appliance products such as displays, cameras, air conditioners, refrigerators and the like with requirements of halogen freeness and environmental friendliness.

The invention discloses a full-body high-strength damp-proof gypsum block and a preparation method. The full-body high-strength damp-proof gypsum block is prepared from the following materials in percentage by weight: 50-55% of building gypsum, 42-45% of water, 1-3% of cement, 0.2-1.5% of fiber, 0.2-1.0% of wood powder, 0.2-0.5% of a water reducing agent, 0.05-0.4% of a water proofing agent, and 0.005-0.02% of paint. According to the full-body high-strength damp-proof gypsum block prepared by adopting the uniform stirring technology, adding the waterproof component and strengthening the toughening component, the uniformity of the full body of a wall body material is improved, and the strength, the humidity resistance, the shock resistance, the permeation resistance, the crack resistance and the fireproof performance of the wall body material are improved; various performance indexes are superior to that of the conventional wall body material and the common gypsum block, cracking and permeation of the built wall body are avoided, and the engineering quality is ensured.

The invention discloses a P-N expanded reaction type flame retardant p-(carboxyphenyl-amino)-(carboxyphenyl-amidoethyl) phenylphosphine oxide and a preparation method thereof. The preparation method comprises the following steps: (a) adding a p-aminobenzoic acid solution into glacial acetic acid; (b) adding triethylamine and mixed solution obtained in the step (a) into a 2-carboxethylphenyl hypophosphorous acid solution, stirring at a high speed and reacting for 2 hours, raising the temperature to 80 DEG C, reacting for 4 hours, cooling, hydrolyzing, performing suction filtration, washing and drying to obtain white powder, namely the P-N expanded reaction type flame retardant. The defects that harmful gases are generated by general flame retardants, the environment is polluted, fuming is caused and the mechanical property is influenced are overcome, the P-N expanded reaction type flame retardant has double-carboxyl end groups, effective flame retardant components are bonded to a PA66 main chain, an inherently flame retardant effect is achieved, and the flame retardant has the advantages of harmlessness, smoke inhibition, high efficiency, environmental friendliness and the like.

The invention relates to a high-temperature-resistant plastic woven bag and a preparation method thereof. The high-temperature-resistant plastic woven bag is prepared from raw materials in parts by weight as follows: 100 parts of polypropylene granules, 185-195 parts of nano calcium carbonate powder, 4.3-4.7 parts of paraffin, 3-4 parts of stearic acid, 5.2-5.8 parts of a coupling agent, 0.4-0.5 parts of an antioxidant, 7-8 parts of polyoxymethylene, 20-30 parts of nano aluminum hydroxide, 0.5-1 part of graphene, 26-28 parts of linear low density polyethylene, 0.25 parts of polyethylene wax, 3.8-4.0 parts of an ethylene-methyl acrylate copolymer 1125AC, 1.8-2.0 parts of tributyl citrate and 0.3-0.5 parts of turpentine oil. The high-temperature-resistant plastic woven bag has excellent performance of common woven bags in the market, and heat resistant strength of the woven bag is further greatly improved.

The invention discloses a 90DEG C cracking-resistant moisture-resistant and flame-retardant polyethylene cable material and a preparation scheme thereof. The cable material is composed of the following components by weight: 60-90 parts of polyethylene, 10-20 parts of a vinyl copolymer, 10-20 parts of a compatilizer, 50-100 parts of a hydroxide flame retardant, 5-20 parts of sepiolite, 5-20 parts of a synergistic flame retardant, 1-3 parts of aminosilane, 1-3 parts of an antioxidant, 0.5-1.5 parts of an ultraviolet light absorber and 2-5 parts of a lubricant. The 90-DEG C cracking-resistant moisture-resistant and flame-retardant polyethylene cable material disclosed by the invention has the characteristics of resistance to a low temperature of -50DEG C, outstanding cracking resistance, insulativity and moisture resistance (volume resistivity of 70DEG C*168h after immersion), good flame retardance, low smoke, no toxicity and the like, also has the advantages of fast extrusion processingspeed, difficult generation of air holes, etc., and can be widely applied to an outer sheath layer of a 1kV-220kV cable.

The invention belongs to the field of vehicle-mounted trash can, in particularly relates to a vehicle-mounted trash can capable of damping anti-spontaneous combustion.The vehicle-mounted trash can capable of damping anti-spontaneous combustion comprises a barrel body. A plurality of vertically-arranged sliding cavities are arranged in the side wall of the barrel body. Upper sliding blocks and lower sliding blocks are arranged in the sliding cavities in a sliding mode. Memory springs are fixedly connected between the upper sliding blocks and the lower sliding blocks. The upper end of the uppersliding blocks are fixedly connected with sliding rods. The upper end of the sliding rods penetrates through the barrel body. The upper ends of the sliding rods are fixedly connected with the same cover plate. The lower end of the cover plate is fixedly connected with a sealing block. The sealing block is matched with an opening of the barrel body. Supporting rods are fixedly connected to the lower ends of the lower sliding blocks. The lower end of the supporting rods penetrates through the barrel body and are fixedly connected with supporting blocks. A supporting seat is fixedly connected tothe lower end of the supporting blocks. The vehicle-mounted trash can capable of damping anti-spontaneous combustion has a good effects that the damping effect is good, and can be timely separated trash can from the outside when generating spontaneous combustion of the trash can, so that the combustion objects in the trash can be quickly extinguished, and the driving safety performance is improved.

The invention provides a honeycomb sandwich board with an embedded multi-level structure. The sandwich board is of a sandwich structure composed of an upper panel, a lower panel and a middle honeycombcore, wherein the honeycomb core is formed by combining multiple square corrugated pipe arrays; corrugations of the corrugated pipes form a sine curve; a hierarchical composite structure is embeddedinto the square corrugated pipes along a height direction, and the first layer is an energy absorption board from top to bottom and is formed by arranging multiple energy absorption cells along the length direction of the square corrugated pipes; the second layer is a spiral pipe arranged along the height of the square corrugated pipes, and the upper and lower ends of the spiral pipe respectivelyform a sandwich structure with two polyester fiber boards; and the third layer is of a lattice structure and is composed of multiple lattice cells arrays. According to the honeycomb sandwich board with the embedded multi-level structure, the problem that noise and vibration in the conventional cabin are serious can be solved, the honeycomb sandwich board aims to realize lightweight while absorbingthe noise and vibration in the cabin, and comfort of passengers is improved on premise of meeting the strength requirement.

The invention discloses a halogen-free flame-retarded cross-linked polyethylene cable insulating material with low smoke. The insulating material is prepared from the following raw materials in parts by weight: 80-150 parts of cross-linked polyethylene, 10-30 parts of magnesium hydroxide, 5-9 parts of aluminium hydroxide, 1-2 parts of lead sulfate tribasic, 0.5-0.9 part of dibasic lead phosphate, 0.3-0.7 part of paraffin, 20-50 parts of phthalate and 5-15 parts of nano-montmorillonite. The insulating material provided by the invention has the advantages of being light in weight, good in toughness, small in flame and low in burning speed, having no molten drop and less smoke, being anti-migration, good in char forming characteristics, easy in processing and the like.

The invention discloses a hybridization catalyst for curing cyanate ester and a preparing method of the hybridization catalyst. The prepared hybridization catalyst is a hybridization material composed of oxidized graphene and a manganese base metal organic skeleton. The manganese base metal organic skeleton is formed by manganous ions and organic ligand through the coordinate bond combination effect. The preparing method for the hybridization catalyst comprises the steps that oxidized graphene, potassium hydroxide, an imidazole compound and the organic ligand are dissolved into deionized water, and dispersed in an ultrasonic mode to form mixed liquid; the obtained mixed liquid are slowly dripped into a manganous acetate tetrahy water solution, and reacts for 20-25 hours under the condition that the temperature ranges from 70 DEG C to 80 DEG C; a product is filtered, washed and dried to obtain the oxidized graphene and manganese base metal organic skeleton hybridization material which is used as a hybridization catalyst for curing the cyanate ester. The source of raw materials of the hybridization catalyst is wide, and the preparing method has the advantages of being simple in process and easy to control.

The invention discloses a flame-resistant and antibacterial composite material capable of performing 3D printing as well as a preparation method and application thereof. The flame-resistant and antibacterial composite material capable of performing 3D printing comprises the following components in parts by weight: 55 to 80 parts of high-molecualr polymer, 2 to 15 parts of toughening agent, 5 to 25parts of adjuvant, 8 to 30 parts of flame retardant, 0.2 to 3 parts of antibacterial agent and 0.1 to 3 parts of light stabilizer. The flame-resistant and antibacterial composite material capable ofperforming 3D printing has the characteristics of excellent flame resistance, high mechanical property, high antibacterial property, high printing stability and the like, is simple, convenient and reasonable in production process and relatively low in economic cost, and can be widely applied in the fields of furniture, decorative lighting, props, automobiles, buildings and the like.

The invention discloses a halogen-free flame-retardant noise suppression sheet. The halogen-free flame-retardant noise suppression sheet comprises the following components by mass: 1 g of base body, 6-10 g of magnetic powder, 0.0064-0.11 g of a coupling agent, 0.4-1 g of a flame retardant and 0.01-0.1 g of an auxiliary material. The invention further discloses a preparation method for the halogen-free flame-retardant noise suppression sheet. The halogen-free flame-retardant noise suppression sheet disclosed by the invention has the characteristics of simple preparation process, low preparation cost and environment friendliness as well as flame retardance, wave absorption performance and the like through optimizing the components and the internal structure of the noise suppression sheet.

The invention discloses a flame-retardant and fire-proof power cable in the technical field of power cables. The flame-retardant and fire-proof power cable includes an outer sheath, the inner wall ofthe outer sheath is provided with a flame retardant bag tape, the inner wall of the flame retardant bag tape is provided with an armor layer, the inner wall of the armor layer is provided with a sandwich fireproof layer, the inner wall of the sandwich fireproof layer is provided with an outer metal shielding layer, the inner wall of the outer metal shielding layer is uniformly provided with conductor protective sleeves, a conductor is arranged in the inner cavity of each conductor protective sleeve, reinforcing ribs are arranged between the two adjacent groups of the conductor protective sleeves, the gap between the outer metal shielding layer and the reinforcing ribs is filled with rubber balls. The flame retardant filler in the rubber bulges can effectively prevent the external fire, andthe sandwich fireproof layer can effectively play the role of flame retardance; the mica tape has the high temperature resistance, and can better protect the cable from damage in a short period of time, to provide longer rescue time for the construction personnel.

The invention discloses a double-component expansion type fireproof coating which consists of a component A and a component B, wherein the component A consists of the following raw materials in partsby weight: 14-18 parts of an epoxy resin, 2-3 parts of an amino resin, 0.2-0.6 part of bentonite, 0.2-0.5 part of a defoaming agent, 0.2-0.5 part of a dispersant, 8-11 parts of titanium dioxide, 6-10parts of flame-retardant filler, 4-6 parts of expanded graphite, 20-30 parts of Ammonium Polyphosphate, 5-9 parts of melamine, 5-9 parts of pentaerythritol, 2-3 parts of reinforcing filler, 11-12 parts of xylene and 3-5 parts of butanol; and the component B is a modified polyamide epoxy curing agent. The fireproof coating is excellent in flame retardancy, high in mechanical strength and excellentin water resistance.

The invention discloses a flame-retardant polyurethane film and a preparation method thereof. The polyurethane film comprises fireproof polyurethane resin, 1%-2% (based on the weight of the fireproof polyurethane) of extinction powder, 0.4%-0.6% of flatting agent, 0.4%-0.6% of peeling aid and organic solvent, wherein the fireproof polyurethane resin is mainly a polymerization product of polyalcohol, polyisocyanates and polytdricalocholphosphate ester. The polyurethane film disclosed by the invention contains fireproof polyurethane resin, extinction powder, flatting agent, and peeling aid, is mainly obtained by polymerizing the polyalcohol, polyisocyanates and polytdricalocholphosphate ester, wherein the polytdricalocholphosphate ester is directly bonded with a polyurethane molecular chain by hydroxyl, and the contained phosphate group achieves flame-retardant effect, so that damages on film performance due to migration of flame retardant molecules after the polyurethane is directly mixed with the flame retardant physically are avoided. By optimizing proportions of various auxiliaries, the film has better waterproof performance and gas permeability.

The invention discloses a method for producing an oil paint, and relates to the field of chemical processes. The method comprises the following steps: feeding, premixing, grinding, mixing a paint, introducing oxygen, filtering and the like, namely adding materials to a twin-cylinder high-speed disperser in opening mixing during feeding; firstly adding 1 / 5 of polyurethane acrylic resin to a first cylinder to render; adding a little of conductive carbon black, chlorinated paraffin, magnetic iron powder, zeolite powder and nickel powder, adding part of polyurethane acrylic resin at an interval of 1 minute, and completely adding the residual polyurethane acrylic resin for 3-4 times; adding a mixed solution of double distilled water, butanol, an organic silicone resin fluid and an isocyanate adhesive to a second cylinder, and carrying out hydrolytic crosslinking reaction; and adding nano powder, and carrying out catalytic reaction, mixing the materials which are processed in the first cylinder and the second cylinder at the ratio, thus various defects of the oil paint can be improved; resources can be reasonably distributed; and the method is economic and applicable.

The invention discloses a preparation method of an energy-saving low-carbon soft porcelain decorative material. The preparation method comprises the following steps: S1, preparing materials; S2, reacting blast furnace slag, porcelain slag and waste sand with a silane coupling agent to obtain first inorganic powder; reacting stone powder with an aluminate coupling agent and stearic acid for crosslinking to obtain second inorganic powder; S3, mixing the first inorganic powder with the second inorganic powder, adding the mixture, stirring for 20 to 30min at the temperature of 50 to 65 DEG C, adding a pigment, diatomite, polypropylene fiber and basalt fiber, then adding silver-plated hollow glass beads, mixing, then adding water and silver-plated hollow glass beads, uniformly stirring to obtain slurry, pouring in a mold, carrying out compression molding at 120-150 DEG C, curing at 180-220 DEG C, and demolding to obtain the product. The energy-saving low-carbon soft porcelain decorative material provided by the invention is prepared by the method. The energy-saving low-carbon soft porcelain decorative material has the advantages of energy saving, low carbon, good thermal insulation performance and high hardness.

The invention discloses an energy-saving and environment-friendly fabricated wall and an assembly method thereof, and belongs to the field of fabricated buildings. The energy-saving and environment-friendly fabricated wall comprises two supporting columns, a plurality of groups of first wall bodies, second wall bodies and third wall bodies are arranged between the two supporting columns, and the first wall bodies, the second wall bodies and the third wall bodies are connected in a spliced mode, a partition plate is arranged between the two supporting columns and located between every two adjacent sets of the first wall bodies, the second wall bodies and the third wall bodies, inserting grooves are formed in one sides of the first wall bodies and one sides of the second wall bodies, and first inserting blocks matched with the inserting grooves are fixedly connected to one sides of the second wall bodies. Rapid installation of fabricated wall can be achieved, the area and the weight of asingle wall body are reduced, hoisting equipment is not needed, the installation cost is saved, positioning connection between the wall bodies is achieved through inserting connection of the inserting blocks and the inserting grooves, direct inserting can be achieved during installation, dislocation movement of the wall bodies is prevented, and in-place installation is ensured.

The invention discloses a sofa fabric. The sofa fabric comprises a base fabric layer, wherein the surface of the base fabric layer is provided with a flame retardant layer, a waterproof layer, an antibacterial layer and an anti-fouling layer in sequence. The base fabric layer is formed by interweaving warp yarns and weft yarns; the warp yarns are formed by blending silver fibers and glass fibers;the ratio of the silver fibers to the glass fibers is 3 to 1; the weft yarns are formed by blending protein fibers and polyester fibers; the blending ratio of the protein fibers to the polyester fibers is 4 to 3; the flame retardant layer is a woven cloth layer containing 20 to 25 percent of flame retardant; the waterproof layer is an aluminum foil layer or a polyurethane layer; the antibacteriallayer is formed by blending bamboo charcoal fibers and silver fibers; the blending ratio of the bamboo charcoal fibers to the silver fibers is 5 to 2; and the anti-fouling layer is a polytetrafluoroethylene layer. The fabric disclosed by the invention has good touch feel, high wear resistance, higher flame retardant property and waterproof antibacterial functions.

The invention relates to nanometer magnesium hydroxide flame retardant with apatite as crystal nucleus composition, wherein the proportion of apatite composition and magnesium hydroxide composition which are respectively calculated with the molar weight of calcium and magnesium is (1-3):(3-6). A preparation method of the invention comprises the following steps that: under the condition of sufficient stirring, a phosphate aqueous solution and a magnesium salt solution are added to an aqueous solution which has the pH value between 10 and 13 and comprises calcium salt and surfactant composition so as to carry out reaction; the proportion of calcium salt and magnesium salt which are calculated with the molar weight of calcium and magnesium is (1-3):(3-6); the proportion of magnesium salt and phosphate which are calculated with the molar weight of magnesium and phosphorus is (27-72):(0.5-1); the solution is precipitated after reaction for sufficient crystallization, and then crystal is precipitated and separated, thus a product can be obtained. The flame retardant has good dispersity in solution, and the thermogravimetric curve analysis shows that the flame retardant is wider in thermal decomposition range, faster to release water at high temperature than ordinary Mg(OH)2, capable of decomposing more water and good in flame retarding effect. The preparation method is simple, moderate in reaction conditions, high in magnesium hydroxide, suitable for industrial production.

The invention relates to the field of metal materials, and provides a multi-element microalloying efficient extrusion magnesium alloy and a preparation method thereof. The alloy is prepared from the following components in percentage by mass: 0.4 to 1.1 percent of aluminum, 0.4 to 0.6 percent of manganese, 0.01 to 0.05 percent of calcium, 0 to 1.6 percent of additive elements, less than or equal to 0.05 percent of inevitable impurities and the balance of magnesium, the additive element is one or any combination of zinc or rare earth, the content of zinc is 0-1.0%, the content of rare earth is one or combination of cerium or neodymium, the content of cerium is 0-0.3%, the content of neodymium is 0-0.3%, and the total content of alloying elements is less than or equal to 3.4%. The preparation method comprises the steps of smelting, gravity casting and efficient extrusion forming. The yield strength of the obtained alloy ranges from 212 MPa to 222 MPa, the tensile strength ranges from 275 MPa to 285 MPa, the ductility ranges from 12% to 17%, and the ratio of the yield strength to the total content of elements ranges from 86 MPa / wt.% to 206 MPa / wt.% and is 3-15 times of the ratio of the yield strength to the total content of the elements of existing commercial magnesium alloy.

The invention discloses a wall material capable of adjusting indoor environmental temperature and humidity and a preparation method of the wall material. The wall material is prepared from components in percentage by weight as follows: 42%-52% of building plaster, 5%-15% of temperature adjustment components, 2%-8% of humidity control components, 32%-42% of water, 0.1%-0.4% of water reducing agents, 0.005%-0.01% of pigments and 0.2%-1.0% of fiber. According to the wall material, the preparation process of a functional wall material is optimized, fluctuation of indoor environmental temperature and humidity is reduced, the durability, the anti-permeability, the anti-cracking performance and the fireproof performance of a wall body are improved, and energy consumption is reduced during construction; with the adoption of the temperature adjustment components and the humidity control components, the wall material has the function of indoor environmental temperature and humidity adjustment, the homogeneity of the wall material is guaranteed, and a product has high strength and seldom contracts; the thermal physical performance of the wall material is excellent, the wall body does not require a thermal-insulation layer, and construction procedures are reduced.

The invention discloses a high-toughness flame-retardant foamed PVC wood-plastic board. The high-toughness flame-retardant foamed PVC wood-plastic board comprises PVC resin, fiber powder, nanometer light calcium carbonate, rutile titanium dioxide, methyltin mercaptide, antimony trioxide, polyacrylonitrile-based carbon fibers, a PVC flexibilizer, a coupling agent, liquid triphenyl phosphite, a PVC modification aid, chlorinated paraffin, silicone oil and an AC foaming agent. The invention also discloses a preparation method for the PVC wood-plastic board. The preparation method for PVC wood-plastic board in the invention is simple in process and easy to operate; and the prepared PVC wood-plastic board has a plurality of advantages like good thermal stability, good ageing resistance, good anti-oxidizability, good impact resistance, good wear resistance, good insulating properties and good flame resistance.

The invention discloses a step-type flame-retardant rubber material. The material comprises in parts by weight: 80-120 parts of rubber, 80-200 parts of a flame retardant, 40-60 parts of filler, and 0.3-2 pats of an auxiliary agent, and the flame retardant is an inorganic flame retardant powder coated with a polymer modifier on the surface. A preparation method comprises the following steps: preparing and modifying the inorganic flame retardant powder, and preparing the flame-retardant rubber material. According to the step-type flame-retardant rubber material and the preparation method thereof, the obtained rubber material has multi-stage flame-retardant characteristics, has the flame-retardant effect in a relatively wide high temperature range, and greatly improves the safe use performance of the rubber.