104results about How to "Play a role in toughening" patented technology

The invention provides a polyphenylene oxide composition used for a photovoltaic junction box. The composition comprises the following components by weight: 55-95 parts of polyphenylene oxide, 45-5 parts of styrene resin, 2-10 parts of a flexibilizer, 5-20 parts of a phosphate fire retardant, 0.5-2.5 parts of an acid absorbent, 0.2-0.6 part of a hindered phenol main antioxidant, 0.2-0.6 part of a phosphite auxiliary antioxidant, 0.3-1.5 parts of an ultraviolet absorbent, 0.3-1.5 parts of a hindered amine light stabilizer, 0.1-0.5 part of a lubricating agent, and 0.1-1.0 part of toner. With the characteristics of good flame resistance, thermo-oxidative aging resistance, UV (ultraviolet) resistance, excellent electrical performances, the composition of the invention has flame retardancy up to grade UL945VA, RTI (relative temperature index)=110DEG C, CTI (comparative tracking index) PLC ( programmable logic controller)=2, and GWIT (glow wire ignition temperature)=750DEG C, thus satisfying the requirements in ROHS (restriction of hazardous substances) standard. Thus, the composition provided in the invention can be used for electronic and electrical component production of solar photovoltaic junction boxes, etc.

The invention relates to a paper making material, a preparation method and a paper making method of environment-friendly synthetic paper. The material comprises modified mineral fiber, thermoplastic starch, cellulose derivative, compatilizer, auxiliary components and the like, wherein the average particle diameter of the modified mineral fiber is 5-10 micrometers, the ratio of the length of the modified mineral fiber to the diameter of the modified mineral fiber is 8-15:1, and the modified mineral fiber is treated by fibrosis ultrafine grinding and surface recombination modification; the thermoplastic starch is formed by performing micronization and plasticization modification on norm starch; and the auxiliary components comprise lubricant and colorant. The paper making material is prepared by sequentially mixing the raw material components fully and then extruding and granulating the mixture by a screw extruder at 60-180 DEG C. According to the plastic process mode, the material can be treated by blow molding through a calender or a paper film machine for carrying out two-way stretch to prepare corresponding paper products. The paper making material can overcome the defects of the current synthetic paper and can be widely applied to the fields of commercial printing, publications, office paper, packing and the like, and the processing procedure of making paper by using plastic processing equipment has environmental protection and low cost.

The invention discloses a display device, a backlight module, a quantum dot optical diaphragm and a preparation method thereof. The quantum dot optical diaphragm comprises a quantum dot layer, a first composite water oxygen barrier layer which covers the surface of the light inlet side of the quantum dot layer and a second composite water oxygen barrier layer which covers the surface of the light outlet side of the quantum dot layer; the first composite water oxygen barrier layer and the second composite water oxygen barrier layer are each selected from one or a combination of any two of a first film structure, a second film structure and a third film structure, wherein the first film structure is the composite water oxygen barrier layer which is composed of polyethylene terephthalate (PET) and graphene, the second film structure is a graphene layer, and the third film structure is the water oxygen barrier layer which is composed of PET and aluminum oxide. Compared with the prior art, the water oxygen barrier property, the photopermeability and the structural stability of the quantum dot optical diaphragm are obviously improved.

The invention provides a method for modifying carbon fibers by dendritic macromoleculars, relating to a method for modifying the carbon fibers and aiming at solving the problem of poor stability due to that only one functional group of organic silicon compound can react with the fiber modified surface so as to limit a membrane in a bidimensional surface. The method comprises the following steps: adding carbon fibers in a strong oxidizing acid, utilizing ultrasonic for processing, heating and refluxing, drying, adding into dendritic macromolecular solution for ultrasonic processing once again, reacting under the temperature of 20-100 DEG C, washing and drying to obtain the carbon fibers modified by the dendritic macromoleculars. The dendritic macromoleculars used in the invention have the advantages of tri-dimensional structure, evenly-distributed and thick outer functional groups, lower viscosity, unique flowing deformation property, good film forming property and favorable modified effect. The epoxy resin composite material prepared by using the carbon fibers modified by the dendritic macromoleculars obtained in the invention has 53.2-55.8MPa of interface shearing strength.

The invention discloses a wear-proof brake pad. The wear-proof brake pad comprises a steel plate, a thermal-insulating layer and a friction block. The friction block is fixed to the steel plate through the thermal-insulating layer. The raw materials of the friction block comprise, by weight, 10-20 parts of phenolic resin, 3-12 parts of nitrile rubber, 2-10 parts of butadiene rubber, 5-10 parts of carbon fiber, 3-8 parts of aramid fiber, 2-5 parts of glass fiber, 10-30 parts of potassium titanate lamella crystals, 5-20 parts of iron sodium titanate lamella crystals, 20-40 parts of barium sulfate, 2-5 parts of nano-silica, 2-5 parts of sepiolite, 2-8 parts of alumina powder, 0.2-1.5 parts of accelerant D, 0.1-0.5 part of zinc oxide, 1-4 parts of vermiculite powder, 2-5 parts of petroleum coke, 1-5 parts of synthetic graphite and 3-10 parts of bamboo charcoal. The wear-proof brake pad is excellent in wear resistance and impact resistance, good in heat resistance and small in curing shrinkage.

The invention relates to an epoxy resin adhesive modified by bismaleimide and liquid butadiene nitrile rubber, and a method for manufacturing a polyimide flexible copper-clad plate using the adhesive. The adhesive is composed of a bismaleimide copolymer, liquid rubber-modified epoxy resin, unmodified epoxy resin, filler, a curing agent and an organic solvent. The adhesive can be used for manufacturing a three-layer flexible copper-clad plate composed of a polyimide thin film, the adhesive and a copper foil, and the dip-soldering resisting temperature of the obtained copper-clad plate can reach 365 DEG C.

The invention discloses a short glass fiber reinforced polyphenylene sulfide resin material and a preparation method thereof. The short glass fiber reinforced polyphenylene sulfide resin material comprises the following raw materials in percentage by weight: 45-66.2% of polyphenylene sulfide, 30-45% of short glass fibers, 0.3-0.5% of an antioxidant, 0.5-1.5% of a lubricating agent and 3-8% of a compatilizer. According to a synergistic effect of the compatilizer and the lubricating agent, the short glass fibers are prevented from floating out of the surface during processing, and the problems that burrs easily appear on the polyphenylene sulfide surface and the glossiness is poor are effectively solved. Meanwhile, the mechanical property of the polyphenylene sulfide is improved, and the prepared short glass fiber reinforced polyphenylene sulfide resin material is high in appearance quality.

The invention discloses an MPP power cable protecting tube. The MPP power cable protecting tube is prepared from modified polypropylene, wherein the modified polypropylene comprises the following components in percentage by mass: 65-80% of polypropylene, 15-25% of polyolefin elastomer, 3-10% of nano composite particle and 0.1-2% of beta crystal nucleating agent, wherein the nano composite particleis a calcium carbonate particle of which the surface a silicon dioxide particle adheres to. The MPP power cable protecting tube has the following advantages and effects: by using a multielement blended system formed by the polypropylene, the polyolefin elastomer and the nano composite particle, the polyolefin elastomer has a toughening effect on the polypropylene; the nano composite particle combines the effects of the silicon dioxide particle and the calcium carbonate particle, thereby improving the tensile strength, impact strength and ring stiffness of the modified polypropylene, and achieving a further toughening effect; and after the beta crystal nucleating agent is added, the beta crystal nucleating agent and the calcium carbonate particle achieve a synergistic effect, so that the polypropylene changes from the alpha crystal form to the beta crystal form, and the impact property of the modified polypropylene is further improved, thereby improving the comprehensive properties ofthe MPP power cable protecting tube prepared from the modified polypropylene.

The invention relates to a preparation method of a SiO2/ABS (acrylonitrile-butadiene-styrene) composite material. The invention aims to solve the technical problems of unfavorable effects of reinforcement, toughening and comprehensive property improvement on the ABS resin in the existing modified ABS resin. The method comprises the following steps: 1. preparing an SiO2 seed solution; 2. preparing a SiO2 colloid microsphere sol solution; 3. preparing sedimentary SiO2 colloid microspheres; 4. preparing dry SiO2 colloid microspheres; 5. preparing a blend; and 6. preparing the SiO2/ABS composite material. The SiO2 microspheres in the SiO2/ABS composite material have favorable dispersion effect, can achieve the goal of reinforcement and have the action of toughening, and obviously enhance the mechanical properties of the composite material; and the SiO2/ABS composite material has high thermal weight loss and favorable heat stability. The invention is applied to the field of preparation of composite materials.

The invention discloses a high-temperature-resistant brake pad. The high-temperature-resistant brake pad comprises a steel plate, a thermal insulation layer and a friction block, wherein the friction block is prepared from a phenol-formaldehyde resin composite, the phenol-formaldehyde resin composite is prepared from raw materials in parts by weight as follows: 15-30 parts of phenol-formaldehyde resin, 3-10 parts of epoxy resin, 3-10 parts of organic silicon resin, 5-10 parts of carbon fibers, 3-10 parts of aramid fibers, 2-8 parts of quartz fibers, 12-30 parts of potassium magnesium titanate lamellas, 5-15 parts of sodium iron titanate lamellas, 15-30 parts of ferrotitanium powder, 2-10 parts of corundum powder, 3-10 parts of barite powder, 2-8 parts of aluminum powder, 1-3 parts of talc powder, 1-5 parts of iron oxide, 2-8 parts of zirconium dioxide, 2-8 parts of petroleum coke, 1-3 parts of natural graphite, 2-5 parts of bamboo charcoal and 2-5 parts of graphene. The provided high-temperature-resistant brake pad has excellent high-temperature resistance, good impact resistance and heat stability, high wear resistance, small thermal expansivity and long service life.

The invention discloses a method for producing a calcium silicate board by utilizing papermaking white clay and quartz stone wastes. The method comprises the following steps: taking out the quartz stone wastes, sieving and filter-pressing to obtain quartz stone waste powder; mixing and forming the papermaking white clay, the quartz stone wastes, high-early-strength silicate cement, high-strength alumina fiber, a water reducing waterproof agent and water, demoulding and naturally curing to obtain the calcium silicate board. The method has the benefits that by utilizing a large quantity of industrial wastes, the environmental load and the manufacturing cost of wall materials are reduced, a large quantity of building materials are saved, the cultivated land is protected, the double effects of controlling the environmental pollution and comprehensively and efficiently utilizing the wastes are achieved, so that the sustainable development of the papermaking industry and the wall material industry is promoted; the wall materials prepared by the method have better rupture strength, good heat insulation property, small density and light self-weight.

The invention discloses a modified composite material using carbon nanotubes and graphene and a preparation method thereof, and belongs to the technical field of a rubber product. In the formula, methacrylic acid is firstly added into the graphene and the carbon nanotubes for acidification modification; then, zinc oxide is added for ionization reaction; the in-situ generation of zinc methacrylateis realized; then, liquid rubber and peroxide initiating agents are added; the zinc methacrylate is initiated for performing co-crosslinking with the liquid rubber after the copolymerization; the surface adsorption wrapping modification and the surface chemical modification on the graphene and the carbon nanotubes are realized, so that the carbon nanomaterial surface has high chemical activity; good bonding force between a carbon nanomaterial and a polymer base body is ensured; the dispersion degree of the carbon nanomaterial in the polymer base body is improved; further, after the composite material is formed, the load can be smoothly transferred onto the carbon nanomaterial; the carbon nanomaterial achieves the enhancing and toughening effects; the heat conduction and electric conductionperformance of the modified composite material are obviously improved.

The invention relates to a method for producing a light-weight wall material by using papermaking white clay. The method comprises the steps of preparing the following components in percentage by mass: 60-70% of papermaking white clay, 5-10% of zirconium-silicate slag, 20-30% of Portland cement and 1-5% of an enhanced water-releasing agent and mixing uniformly, preparing into concrete slurry having a required flowability, curing and molding, wherein the enhanced water-releasing agent is a mixed solution prepared by dissolving 4-5 parts of sodium sulfate, 7-8 parts of triethanolamine, 15-18 parts of saccharide sodium, 25-30 parts of sodium methyl sulfonate and 40-45 parts of calcium lignin sulfonate in water. The wall material prepared by the method disclosed by the invention has the advantages of good compressive strength, good heat insulation property, low density and light self-weight.

The invention relates to a zirconium-containing alumina hollow sphere insulating brick. The insulating brick comprises the following components in percentage by mass: 40-69% of alumina hollow spheres,21-46% of alumina micro powder and 5-14% of zirconium-containing powder, wherein the sum is 100%. Extra components in percentage by weight are added, and a calculation basis of the addition amount isa ratio of the sum of the weight of the previous components to a binding agent of 8.5-12%. The condition that the traditional zirconium-containing alumina hollow sphere insulating brick is single inmain composition is improved, the matrix toughness is increased, and the characteristics of the material such as strength, thermal shock resistance and the like are improved, so that the service lifeof the insulating brick is prolonged.

The invention provides a preparation method of carbon nanotube modified foamed ceramics. The preparation method comprises the following steps: adding inorganic ceramic particles and cationic surface active agent into deionized water, stirring at a high speed, enabling the cationic surface active agent to cover the surface of the inorganic ceramic particle, and then filtering and drying to obtain inorganic ceramic particles with positive charge; adding the inorganic ceramic particles and carbon nanotube into deionized water, enabling the inorganic ceramic particles with the positive charge to have electrostatic adsorption with carbon nanotube, and then filtering and drying to obtain composite powder; grinding the composite powder together with organic resin, performing hot pressing and sintering under the protection of nitrogen to obtain the carbon nanotube modified foamed ceramics. The carbon nanotube modified foamed ceramics are used as a reinforcing phase, so that on one hand, an effect of flexibilizing a foamed ceramic substrate can be achieved; on the other hand, the sound wave can be bounced for multiple times in a hollow structure of the carbon nanotube, so that a denoising effect can be realized. The preparation method is high in practicability.

The invention relates to a method for preparing mullite whisker-reinforced alumina hollow sphere porous ceramic. The method includes the following steps: putting alumina hollow spheres, alumina fine powder, silica fine powder, aluminum fluoride, starch and water in a mixer for mixing so as to obtain mixed pug, putting the uniformly-mixed pug into a mold, performing molding and pouring, curing a sample in the mold, releasing the mold so as to form an alumina hollow sphere porous ceramic green body, drying the porous ceramic green body obtained after mold release, calcining the dried porous ceramic green body at a high temperature for 2-6 hours, performing natural cooling in the furnace, and taking out the cooled porous ceramic green body so as to obtain the mullite whisker-reinforced alumina hollow sphere porous ceramic. The mullite whisker-reinforced alumina hollow sphere porous ceramic is prepared from Al2O3 and Si02 raw materials with abundant resources, the cost is low, and the toughness and impact strength of the material can be improved through introduction of mullite whisker into the porous ceramic material, so that improvement of the service life of the material is facilitated.

The invention relates to the field of lightweight of automobiles, and relates to an elastic plate, in particular to a basalt fiber fabric composite automobile plate spring and a preparation method thereof. The basalt fiber fabric composite automobile plate spring consists of the following components in percentages by weight: 30-40% of polyurethane modified epoxy resin and 60-70% of a basalt fiberfabric. The provided basalt fiber fabric elastic composite automobile plate spring has the characteristics of high mechanical strength, no cracking, wide used temperature range, flame retardance, no smoke, ultraviolet resistance, weather resistance, chemical corrosion resistance and good moisture resistance, and meanwhile has the advantages of reasonable structure and low density. Compared with atraditional steel automobile plate spring, the basalt fiber fabric composite automobile plate spring has the advantages that the weight can be reduced by 60-70%, and the basalt fiber fabric compositeautomobile plate spring is suitable for a lightweight arc-shaped automotive composite plate spring.

The invention relates to a preparation method for a colored-stone foamed thermal-insulation decorative plate. The preparation method comprises the following steps: step 1, preparation of a green body: mixing raw materials consisting of perlite, bentonite, zeolite, kaolin, travertine, black clay, green ceramic silicon powder, fluorite tailings, combustible carbon powder, gangue, short-cut basalt fiber and polypropylene short-cut fiber, then successively carrying out crushing, wet ball milling, uniform ageing, spray drying, granulation and pulverization, carrying out compacting and molding so as to obtain a biscuit and drying the biscuit so as to obtain the green body; step 2, preparation of a glaze and glazing: subjecting the raw materials for the green body, albite and potash feldspar to ball milling so as to obtain the glaze and glazing the green body with the glaze; and step 3, carrying out high-temperature sintering on the glazed green body so as to form the colored-stone foamed thermal-insulation decorative plate with the glaze and with closed pores uniformly and densely distributed in the green body. The colored-stone foamed thermal-insulation decorative plate provided by the invention has the technical effects of lightweight, thermal insulation performance, fire resistance, water resistance, high strength, aging resistance and wearing of a decorative surface.

The invention provides a special calcium silicate cement board for green-fabricated building walls and a production method of the special calcium silicate cement board. The calcium silicate cement board is prepared from the following raw materials in parts by weight: paper mill sludge, Zr-containing silica residues, coal ash, slag powder, portland cement, straw fibers, ceramic fibers, a PC water reducer, an SM water reducer, water, alumina powder, talc powder, zinc oxide, antimony oxide, sodium silicate and silicon nitride, wherein the paper mill sludge comprises the following components by weight: 30-40 kg of plant fibers, 1.4 kg of aluminum oxide, 7.95 kg of silicon dioxide, 1.15 kg of ferric oxide, 45.6 kg of calcium oxide and 2.5 kg of magnesium oxide; the mass fraction of silicon dioxide in Zr-containing silica residues is 85.3%; slag powder comprises the following components by weight: 15.6 kg of silicon oxide, 6.58 kg of aluminum oxide, 32.8 kg of calcium oxide and 4.68 kg of magnesium oxide.

The invention discloses a high-strength and oil-resistant electric power cable, which comprises a conductor, wherein the conductor is clad with an insulation layer; the insulation layer is clad with a protecting jacket; the protecting jacket is prepared from a modified nitrile rubber composite material; the modified nitrile rubber composite material is prepared from the following raw materials: nitrile rubber, polypropylene, polyurethane, modified black carbon sepiolite powder, bentonite, attapulgite, a zinc oxide, a stearic acid, dicumyl peroxide, sulfur, turpentine, an anti-ageing agent, an accelerating agent, a silane coupling agent, epoxy butyl tallate, epoxy butyl stearate and stannous octoate. The high-strength and oil-resistant electric power cable which is provided by the invention is high in strength, good in oil resistance and excellent in abrasion resistance and ageing resistance.