606results about How to "High modulus" patented technology

The invention belongs to the technical field of copper-clad plates, and relates to a low-dielectric high-heat-resistance copper-clad plate and a preparation method thereof. By introducing the POSS resin, the dielectric constant of the copper-clad plate is effectively reduced, which is crucial for reducing signal delay and improving signal transmission efficiency. The introduction of the POSS resin not only improves the dielectric properties of the material, but also improves the glass transition temperature (Tg) of the material, which means that the physical and chemical properties of the material can be kept unchanged at a higher temperature, and the material is suitable for wider environmental conditions. By using the resin and the inorganic filler in a specific ratio, the copper-clad plate shows excellent copper foil peel strength, and ensures that the bonding force between the copper foil and the base material is not easily weakened under long-term use or severe conditions. Meanwhile, the material also has excellent CAF (conductive anode wire) resistance, can effectively prevent internal short circuit caused by moisture, and prolongs the service life of an electronic product.

The invention provides a glass fiber reinforced nylon composite material and a preparation method thereof, and belongs to the technical field of high polymer materials, the glass fiber reinforced nylon composite material comprises the following components by weight: 75-82 parts of nylon 6, 14-16 parts of modified glass fiber, 2-3 parts of polyethylene glycol, 0.4-0.7 part of an antioxidant, 0.6-1 part of a lubricant and 0.6-1 part of an antistatic agent; the modified glass fibers are prepared by treating glass fibers with a silane coupling agent and then treating the glass fibers with a dopamine-boron nitride surface modifier. The excellent tensile strength of the prepared composite material is guaranteed, and meanwhile, the reduction of the elongation at break is effectively avoided, so that the fatigue resistance of the composite material is guaranteed, and the service life is further prolonged.

The invention discloses a biodegradable paper-plastic composite material and a preparation method thereof. The biodegradable paper-plastic composite material is prepared from the following components in parts by mass: 70-90 parts of poly (butylene adipate-co-terephthalate), 10-30 parts of carbon dioxide-based polyester-polycarbonate and 0.2-0.5 part of a processing aid. Polybutylene adipate terephthalate (PBAT) not only has better mechanical properties, but also has higher ductility and elongation at break, but has the defects of low modulus, easiness in curl deformation, higher melt viscosity, easiness in adhesion to equipment and poor barrier property. PPCP belongs to an amorphous polymer, is high in tensile strength and excellent in barrier property, but is low in elongation at break (-5%), is a brittle polymer and is poor in melt strength, and the higher the temperature is, the poorer the melt strength is. Therefore, the PPCP is ingeniously used for modifying the PBAT blown film, the obtained film combines the properties of the two plastics, the good ductility and elongation at break are kept, the modulus of the film is also improved, and meanwhile, the melt strength is also easy to process.

The invention discloses a composite rubber material with wear resistance and high tear strength and a preparation method of the composite rubber material, and belongs to the technical field of rubber material processing. The technical problem that the enhancement effect of the filler on the wear resistance, tear resistance and mechanical strength of a rubber matrix needs to be further improved exists in the prior art. The composite material comprises the following components in parts by weight: 100-110 parts of internal mixed rubber, 1-2 parts of a vulcanization accelerator and 2-3 parts of a vulcanizing agent, modified polybutadiene is reinforced by aramid pulp, modified carbon black and modified graphene to prepare composite polybutadiene, and then styrene butadiene rubber is reinforced and modified by the prepared composite polybutadiene and silicone rubber to prepare the composite material. By improving the degree of crosslinking between material molecules and optimizing material composition, the wear resistance and tear resistance of the composite rubber material are effectively improved, and the mechanical property of the composite rubber material is also improved.

The invention relates to the technical field of production of automobile roofs, and particularly discloses a fiber-reinforced thermoplastic composite automobile interior ceiling and a preparation method thereof. A fiber-reinforced thermoplastic composite material automotive interior ceiling comprises a base material and a fabric, and the base material sequentially comprises a bottom layer non-woven fabric, a first adhesive film, a blend fiber felt and a second adhesive film from bottom to top; the blend fiber felt is made of reinforced fibers and thermoplastic fibers through a non-woven process. The preparation method comprises the following steps of: preparing the base material by a dry method, forming the framework and compounding the fabric by using a set of mold to obtain a ceiling prototype, and then punching by using a cold mold and integrally curling and covering the base material and the fabric of the skylight opening to obtain the ceiling. The automobile interior ceiling made of the fiber-reinforced thermoplastic composite material has excellent dimensional stability and is more low-carbon and environment-friendly, and raw material leftover materials generated in the production process and products produced after the life cycle is ended are easy to recycle.

The invention relates to the technical crossing field of polyphenylene sulfide fiber paper, special papermaking and insulation paper, in particular to high-temperature-resistant polyphenylene sulfide fiber composite insulation paper and a preparation process thereof. The high-temperature-resistant polyphenylene sulfide fiber composite insulation paper with a dense structure similar to reinforcing steel bar-mortar is prepared by preferably selecting the polyphenylene sulfide fiber with higher cost performance as a raw material and taking the aramid fibrid as a filling agent and an adhesive and adopting a wet papermaking process. The prepared composite paper has excellent temperature resistance and chemical corrosion resistance, the production process flow is short, the production process is free of pollution, the industrial production cost of the composite paper can be reduced, the temperature resistance and chemical stability of medium-and-low-end application insulation paper are improved, the application field of the composite paper in a more severe environment is widened, and the composite paper has good application prospects. Good economic benefits and application values are realized.

The invention provides a carbon nanotube modified polypropylene composite material and a preparation method thereof, and belongs to the technical field of antibacterial materials. According to the method, plant fibers are used as precursors, carbon nanotubes are prepared through high-temperature calcination, and the carbon nanotubes are subjected to surface activation treatment by using aids such as L-cysteine hydrochloride, sodium ascorbate and ethylenediamine, so that the dispersity and interface bonding force of the carbon nanotubes in a polypropylene matrix are remarkably improved. And then, mixing the modified carbon nano tube with polypropylene, polyhydric alcohol and a catalyst, reacting, and granulating through a double-screw extruder to prepare the composite material with excellent performance. The composite material disclosed by the invention has excellent mechanical properties, thermal stability, antibacterial property and conductivity, and is suitable for the fields of automobile parts, electronic device shells, building materials, medical apparatuses and instruments and the like. The method is simple in process, environment-friendly and efficient, renewable resources are fully utilized, and the method has a wide industrial application prospect.

The invention discloses a water-based surface treatment liquid for a galvanized steel sheet. The water-based surface treatment liquid comprises deionized water and a solid, the solid component comprises the following components in parts by weight: 25-65 parts of water-based cationic polymer resin A in the solid component; the weight part of the compound organosilane coupling agent B in the solid components is 30 to 60 parts; the weight part of the compound lubricating particles C in the solid components is 3-10 parts; wherein the compound lubricating particles C comprise at least one organosilane coupling agent C1 containing unsaturated bonds; and a mixture of an oxidized polyethylene wax emulsion and a polytetrafluoroethylene wax emulsion; a water-soluble fluorine-containing compound D, wherein the weight part of the fluorine element in the solid is 1.5-5 parts; a water-soluble phosphorus-containing compound E, wherein the weight part of the phosphorus element in the solid is 1-3 parts; and a water-soluble salt compound F containing an eighth group iron element, wherein the weight part of the eighth group iron element in the solid component is 0.2-0.6 part.

The invention relates to a micro-nano aggregate based on silanized calcium sulfate whisker in-situ polymerization, the main component of the micro-nano aggregate is acrylate copolymerized CSW / NS-GO, and the preparation method comprises the following steps: loading nano silicon dioxide on the surface of calcium sulfate whisker to obtain CSW / NS; carrying out silanization modification on CSW / NS; preparing graphene oxide by a Hummers method; and carrying out in-situ polymerization to prepare the acrylate copolymerized CSW / NS-GO. Calcium sulfate whiskers are loaded and bonded with epoxy modified nano silicon dioxide and then subjected to in-situ polymerization with graphene oxide in an acrylic monomer, a polymer chain is tightly combined with a functional group of CSW / NS-GO, good interface bonding is formed, and the strength and toughness of the composite material are improved. The acrylate copolymerized CSW / NS-GO has a microscopic three-dimensional network structure and excellent stability, so that the internal structure of the concrete is more compact, the porosity is reduced, the permeation of water is prevented, and the invasion of harmful substances such as chloride ions and sulfate ions into channels is reduced, thereby reducing the structural damage caused by environmental factors such as dry-wet cycle and freeze-thaw cycle; the durability of the concrete is improved.

The invention provides an ocean engineering anticorrosive coating and a preparation method thereof, and belongs to the technical field of coatings. The coating is prepared from the following raw materials: fluorocarbon resin, modified synthetic mica, modified basalt fibers, modified carbon nanotubes, nano silicon dioxide, nano zinc oxide, nano titanium dioxide, carbon fibers, zinc phosphate, hydroxyl-terminated polybutadiene, a plant extract, organic tin and the like. The modified synthetic mica and the modified carbon nanotubes are modified by adopting pentaerythritol stearate, cellulose nitrate and sodium hexametaphosphate; the modified basalt fiber is modified by adopting sodium stannate, polyvinyl alcohol and sodium hexametaphosphate; the plant extract is ethanol percolation extract of kandelia candel leaves and mangnolia officinalis leaves. All the components are used in a matched mode according to a certain proportion, and the advantages of being excellent in anti-corrosion performance, good in mechanical performance, excellent in anti-aging performance, environmentally friendly and the like are achieved.

The invention relates to the field of polyethylene resin, and discloses a crosslinked polyethylene resin composition, crosslinked polyethylene resin and application thereof. The crosslinked polyethylene resin composition comprises polyethylene resin, a grafting component, a free radical initiator and a crosslinking component. The cross-linked polyethylene resin obtained by using the cross-linked polyethylene resin composition of the present invention has high strength, modulus and other properties, low gel content, and excellent thermoplasticity and processability, and does not cause performance degradation even after multiple processing.

The invention provides a polymer alloy material, a preparation method thereof and a flow cell panel frame, and belongs to the technical field of high polymer materials. The polymer alloy material comprises the following components: 25-80% of polyolefin, 10-20% of engineering plastic, 1-5% of a compatilizer, 5-50% of an inorganic filler and 0.1-5% of an auxiliary agent. Wherein the engineering plastic is selected from one or more of a styrene methyl methacrylate copolymer, a styrene-butadiene methyl methacrylate copolymer, polycarbonate, polyphenyl ether, polyphenylene sulfide, a styrene-maleic anhydride copolymer or a styrene-acrylonitrile copolymer. The polymer alloy material forms a bicontinuous phase structure with'sea-sea 'microscopic dispersion characteristic and tight interface bonding, can simultaneously have the characteristics of excellent heat resistance, corrosion resistance, high flow, low shrinkage, high modulus and the like, and makes up for the defect of insufficient performance of the existing liquid flow cell panel frame plate PP material.

The invention belongs to the technical field of IC packaging materials, and relates to a hyperbranched active ester curing agent containing double bonds and a layer-adding film containing the active ester curing agent. The structural formula of the hyperbranched active ester curing agent containing the double bonds is as shown in a formula I: # imgabs0 # formula I; the double-bond-containing hyperbranched active ester curing agent contains more branched structures, has better flowability, can improve the film-forming property of the curing agent, and provides more active ester equivalent; meanwhile, through the free radical polymerization reaction of double bonds, the crosslinking density is further increased, and after the combined action with the crosslinking reaction of the non-hyperbranched active ester curing agent and the epoxy resin, the glass-transition temperature of the layer-adding film can be increased, the thermal expansion coefficient of the layer-adding film can be reduced, and the thermodynamic property of the layer-adding film can be improved; in addition, the hyperbranched rigid skeleton structure can introduce nanoscale micropores into a curing system, so that the dielectric property of the layer-adding film is improved.

The invention discloses a high-performance polyacrylonitrile-based carbon fiber and a preparation method thereof, and the preparation method comprises the following steps: proportionally mixing polyacrylonitrile, a solvent and a plasticizer, heating and stirring to obtain a uniform spinning solution; the plasticizer is diphenyl phthalate, bisphenol A-bis (diphenyl) phosphate ester or resorcinol bis (diphenyl) phosphate ester; spinning the spinning solution to prepare a polyacrylonitrile fiber precursor; carrying out hot drawing treatment on the polyacrylonitrile fiber precursor, and then carrying out pre-oxidation and carbonization treatment to obtain polyacrylonitrile-based carbon fibers; the pre-oxidation temperature ranges from 200 DEG C to 300 DEG C, and the pre-oxidation time ranges from 80 min to 160 min. The preparation method of the carbon fiber can effectively improve the spinnability and the draftability of the PAN fiber, and can promote the crystallinity and the graphitization degree of the carbon fiber to be improved, so that the mechanical property of the fiber is enhanced.

The invention relates to the technical field of epoxy resin, and discloses polytetrahydrofuran-nanocellulose toughened and reinforced epoxy resin, nanocellulose has a high length-diameter ratio and can play a stress transfer role in an epoxy resin matrix, and a polytetrahydrofuran molecular chain is introduced, so that the polarity of the nanocellulose is improved, and the toughness of the epoxy resin is improved. Compared with the prior art, the nano-crystalline cellulose has the same chain segment as carboxyl-terminated polytetrahydrofuran participating in curing, so that the nano-crystalline cellulose has better compatibility and can form good dispersity in a matrix, and an active carboxylic acid methyl ester group is introduced to a molecular chain of polytetrahydrofuran, so that the molecular chain of polytetrahydrofuran is introduced to the surface of the nano-crystalline cellulose, and the nano-crystalline cellulose is prepared. A polytetrahydrofuran molecular chain contains a flexible chain segment, so that the polytetrahydrofuran has a very good toughening effect, the rigidity of the epoxy resin is reduced, and the epoxy resin has more excellent mechanical properties under the synergistic toughening action of the nanocellulose and the polytetrahydrofuran.

The invention discloses a preparation method and application of a nano chitin lignin composite material, and relates to the technical field of rubber composites.The nano chitin lignin composite material comprises a rubber matrix, a reinforcing filler and a rubber nano chitin lignin compound, and the reinforcing filler is precipitated silica, carbon black and nano chitin lignin; the nano chitin lignin is a natural substance. Precipitated silicon dioxide, carbon black and nano chitin lignin are used as reinforcing filler, so that high compatibility of the nano chitin lignin and a sizing material matrix is realized, networking of the filler is reduced, energy consumed by irreversible deformation is reduced, and the service life of the sizing material is prolonged. The problems that rubber products are large in production pollution, obvious in heat generation, large in energy consumption and short in service life are solved.

The invention discloses shell-imitated mechanically-enhanced photonic crystal paper, a preparation method thereof and application of the shell-imitated mechanically-enhanced photonic crystal paper in repeatable printing. The photonic crystal paper is prepared from a zirconium phosphate layered material and soft gel through blade coating shear force induced self-assembly alternate arrangement. The photonic crystal paper disclosed by the invention has a shell-imitated brick mud structure, and meanwhile, zirconium phosphate and soft gel have a strong hydrogen-bond interaction, so that the photonic crystal paper has high tensile strength, high flexibility, high modulus and self-supporting property, and can support repeated printing. When an aqueous solution containing a hygroscopic solute is used as ink to carry out ink-jet printing on the photonic crystal paper, the gel matrix is swelled, the lattice spacing is increased, and a lasting multi-color printing effect is achieved. The selected zirconium phosphate layered material has good thermal stability, and meanwhile, the brick mud structure can reduce the oxygen transmittance, so that the photonic crystal paper has flame retardant property, and the storage safety is improved. The blade coating method is simple and rapid, so that continuous production of the photonic crystal paper can be realized.

The invention discloses a high-thermal-conductivity polypropylene composite material and a preparation method thereof, and belongs to the technical field of high polymer material modification. The high-thermal-conductivity polypropylene composite material comprises the following components in parts by mass: 70-80 parts of polypropylene resin; 20 to 30 parts of graphene oxide; 0.1 to 0.5 part of a double-walled carbon nanotube; 5 parts of maleic anhydride grafted polypropylene; and 1 part of an auxiliary agent. Wherein the adopted graphene oxide has a two-position structure, the double-walled carbon nanotube has a one-dimensional structure, and both the graphene oxide and the double-walled carbon nanotube have very high heat conductivity coefficients; when the two materials are added into polypropylene at the same time, the micro-content of the double-walled carbon nanotube with the one-dimensional structure plays a role in lapping in the melt blending process, and forms a network structure together with the graphene oxide with the two-dimensional structure, so that the heat-conducting property of the polypropylene composite material is greatly improved.

The invention provides a para-aramid fiber and a preparation method thereof.Under the sealed condition, poly-p-phenylene terephthamide resin with the water content lower than 500 ppm and the viscosity of 6.5 dL / g-7. 5 dL / g and concentrated sulfuric acid solid particles are mixed, defoamed and filtered to obtain a spinning solution, then tows are obtained through a dry jet wet spinning method, and finally multi-stage drying is conducted to obtain the para-aramid fiber. The high-strength and high-modulus para-aramid fiber is obtained. The concentrated sulfuric acid solid particles are used as raw materials, the mixing and permeation effects of concentrated sulfuric acid on resin are enhanced, the slurry sandwich phenomenon is reduced, polymer degradation is relieved, a high-quality spinning solution is provided for preparing the high-strength and high-modulus aramid fiber, and the strength and modulus of the para-aramid fiber, especially the modulus, are greatly improved.

The invention relates to a preparation method of a multi-scale SiC particle heterostructure reinforced magnesium-based composite material, and belongs to the field of metal-based composite materials and preparation thereof. According to the preparation method, an in-situ authigenic second phase generated by rare earth elements is added, micron-scale, submicron-scale and nano-scale SiC reinforcement particles form a heterostructure formed due to size difference, and after a subsequent plastic deformation process, the multi-scale reinforcement particles form a heterostructure with a layered distribution characteristic; the effects of second phase strengthening, reinforcement particle strengthening and heterostructure strengthening are generated, and meanwhile the modulus and strength of the magnesium-based composite material are improved. And moreover, a stirring casting mode is adopted for preparation, the production process is shortened, the production cost is reduced, the high-modulus and high-strength magnesium-based composite material is prepared, and the preparation method has important significance in promoting application of the high-performance magnesium-based composite material and expanding the application range of the magnesium-based composite material in the fields of automobile industry, aerospace and the like.

The invention discloses a warm-keeping dazzling black fiber which comprises a monofilament main body with a triangular section and a circular hollow through hole formed in the middle of the monofilament main body, and the warm-keeping dazzling black fiber enlarges a reflective surface through the monofilament main body with the triangular section; through the circular hollow through hole structure, the fiber fabric woven by the monofilament main body has a heat preservation effect. The probability that light is completely absorbed by fibers can be increased, so that under the same content of master batches, the fibers are correspondingly black in color and better in warm keeping effect, and fiber fabric has a good reflection effect and a good heat preservation performance, is excellent in heat preservation performance and has a straight effect.

The invention discloses a modified asphalt composition, a preparation method thereof and a modified asphalt waterproof coiled material. The modified asphalt composition comprises the following raw material components in parts by weight: 40-50 parts of composite asphalt; 8 to 10 parts of softening oil; 5 to 7 parts of SBS (Styrene Butadiene Styrene); 1 to 1.5 parts of carbon fiber; 10 to 15 parts of rubber powder; 1-2 parts of an auxiliary agent; 15 to 25 parts of a filling material; wherein the carbon fibers and the SBS are interwoven to form a modified network, and the mass ratio of the carbon fibers to the SBS is 1: (4-6); the mass ratio of the carbon fibers to the composite asphalt is 1: (27-40); the mass ratio of the carbon fiber to the auxiliary agent is 1: (0.7-2). According to the modified asphalt composition, through the synergistic effect of the composite asphalt, the carbon fibers and the SBS, the mechanical property of the modified asphalt composition is guaranteed, meanwhile, the high-temperature stability of the modified asphalt composition is improved, and the influence on a waterproof material during thermal pavement of a pavement or a bridge deck can be effectively resisted.

The invention relates to the technical field of fiber preparation, in particular to a liquid crystal polyarylester polymer, a liquid crystal polyarylester fiber and a preparation method.The preparation method of the liquid crystal polyarylester polymer comprises the steps that under the inert gas atmosphere, p-hydroxybenzoic acid, fluorine-containing benzoic acid monomers, 2-hydroxy-6-naphthoic acid and a catalyst are added into acetic anhydride; heating to carry out prepolymerization reaction; and after the prepolymerization reaction is finished, keeping the inert gas atmosphere, raising the temperature, carrying out polycondensation reaction, continuously discharging acetic anhydride in the polycondensation reaction process, controlling the viscosity of the reaction polymer, and obtaining the liquid crystal polyarylate polymer after the reaction is finished. The liquid crystal polyarylester polymer is subjected to melt spinning to prepare the liquid crystal polyarylester fiber. The liquid crystal polyarylester fiber has good mechanical properties and low water absorption, has high cohesiveness with other materials due to excellent interface compounding performance, and has wide application prospects in the fields of 5G communication and the like.

The invention relates to the field of anti-cutting gloves, in particular to an anti-cutting glove and a preparation method thereof, which are used for solving the problems of insufficient protection performance and poor comfort of the existing anti-cutting glove. The anti-cutting glove comprises a skin-attaching comfortable layer, a cutting-resistant layer and a wear-resistant gum dipping layer, the skin-attaching comfortable layer enables the glove to have excellent comfort and not prone to causing hand pressure, the cutting-resistant layer can effectively improve the cutting-resistant performance of the glove, the cutting-resistant capability of the glove is greatly enhanced, sharp instruments are prevented from easily penetrating through the glove, the hand safety is effectively protected, the wear-resistant gum dipping layer can effectively improve the sealing performance and wear resistance of the glove, and the service life of the glove is prolonged. The durability and the stability of the glove are improved; the anti-cutting gloves prepared by the preparation method not only can effectively protect the safety of hands, but also can keep excellent fitting degree and flexibility even when high-strength operation is carried out, so that an operator can smoothly complete tasks in a complex environment, and the working efficiency and the safety are remarkably improved.

The invention discloses a preparation method of anti-aging cellulose insulation paper, and belongs to the technical field of oil paper insulation for electrical equipment. The problems that in the prior art, the polymerization degree of cellulose insulation paper in an oil-paper insulation system is greatly reduced, so that aging is caused, the insulation performance is reduced, and the service life is shortened are solved. The preparation method comprises the following steps: firstly, pre-treating natural color softwood pulp, grinding the softwood pulp to different degrees, and mixing the softwood pulp; secondly, purifying the mixed paper pulp, screening out fine fibers, and replacing the screened-out fine fibers with aramid nanofibers to prepare mixed paper pulp containing the aramid nanofibers; adding the mixed paper pulp containing the aramid nanofibers into a sheet making machine, performing dehydration forming and drying to obtain raw paper, and performing calendaring to obtain the cellulose insulation paper. The aging resistance and the insulating property of the cellulose insulating paper are remarkably improved, and the performance requirements of the insulating paper for the ultra-high voltage transformer can be met.

The invention discloses high-heat-resistance modified PP (polypropylene) resin and a preparation method thereof. The high-heat-resistance modified PP resin comprises polypropylene, silicon dioxide, nano calcium carbonate, a heat-resistance modifier, an antioxidant, a stiffening agent, a coupling agent, a surfactant and a dispersing agent, the preparation method comprises the following steps: respectively dispersing silicon dioxide and nano calcium carbonate in ethanol, and then respectively carrying out reflux reaction with a coupling agent; respectively adding a surfactant into the silicon dioxide and the nano calcium carbonate, and stirring; respectively adding a dispersing agent into the surface-modified silicon dioxide and nano calcium carbonate; adding the heat-resistant modifier into the polypropylene resin to obtain a first auxiliary agent, adding the antioxidant into the polypropylene resin to obtain a second auxiliary agent, and adding the stiffening agent into the polypropylene resin to obtain a third auxiliary agent; and adding the dispersed silicon dioxide, nano calcium carbonate, a first auxiliary agent, a second auxiliary agent and a third auxiliary agent into polypropylene resin, and mixing to obtain the high-heat-resistance modified PP resin.

The invention relates to a hydrated borate micromolecule with a boron-nitrogen coordination bond, a derivative resin material and a preparation method of the hydrated borate micromolecule. The preparation method comprises the following steps: S1, synthesizing boron-nitrogen coordination micromolecules: dissolving and reacting boric acid, a derivative thereof and a polyfunctional group amine compound at room temperature through a solution reaction to obtain the boron-nitrogen coordination micromolecules; the borate micromolecule NCBW-X with intramolecular boron and nitrogen coordination is formed; s2, the NCBW-X micromolecule can be used for curing epoxy resin and synthesizing materials such as phenolic resin through end-NH2 and end-OH on two sides, the NCBW-X improves the mechanical property of each system through a rigid eight-membered ring, boron-nitrogen coordination of the NCBW-X can generate hydration, the environmental endurance is improved on the premise of retaining the original dynamic nature of boric acid ester of the NCBW-X, and the service life of the NCBW-X micromolecule is prolonged. Meanwhile, due to the dynamic reversibility of the NCBW-X, the NCBW-X is used for curing epoxy resin, and materials such as phenolic resin and the like are improved to a certain extent in the aspects of self-repairing and recycling.

The invention relates to the technical field of textile, in particular to lyocell fiber and polyester fiber blended yarn and a preparation method and application thereof, and aims to solve the problems that the prepared jean fabric is easy to fluff and pilling, the aesthetic property and the service life are affected, the skin-friendly performance and the antibacterial performance need to be improved, and the service life of the jean fabric is affected due to poor wear resistance of the existing blended yarn. The requirements of people on the high-quality jean fabric cannot be met; according to the preparation method, the proportion of the modified polyester fibers to the lyocell fibers is reasonable, and the advantages of the modified polyester fibers and the lyocell fibers are fully exerted, so that the prepared blended yarn is excellent in hygroscopicity, breathability, shape retention, wear resistance, antistatic property, antibacterial property and the like, excellent in comprehensive performance and suitable for popularization and application. The method is suitable for producing fashionable and environment-friendly denim fabric, the quality and functionality of the denim fabric can be improved, the requirements of people for high-quality denim fabric are met, and the method has wide market application prospects.

The invention provides a high-heat-resistance and high-barrier PA6 / COC composite material and a preparation method thereof. The PA6 / COC composite material comprises the following components in parts by weight: 65-80 parts of PA6; 15 to 25 parts of COC; 6-10 parts of a modified filler; 0.5 to 1.5 parts of a nucleating agent; 4-8 parts of a toughening agent; 0.5 to 2 parts of a lubricant; and 0.2 to 1.0 part of an antioxidant. The high-viscosity PA6 is used as first matrix resin, the COC is used as second matrix resin, the solvent resistance of the PA6 is improved through the COC, the crystallinity of the alloy material is improved by adding the nucleating agent, the rigidity, the heat resistance, the solvent resistance and the barrier property of the material are further improved, meanwhile, a proper flexibilizer and lubricant system is adopted, the rigidity, the toughness and the processability of the material are balanced, and the service life of the material is prolonged. The finally prepared PA6 / COC composite material has high heat resistance, excellent solvent resistance and good barrier property.

The present invention belongs to the technical field of resin composite materials, and specifically relates to a modified fiber reinforced resin-based composite material and a preparation method thereof, including the following raw materials by weight: 30-50 parts of modified fibers, 60-80 parts of resin matrix, 3-8 parts of initiators, 10-15 parts of sodium silicate, 1-3 parts of flow aids, 2-4 parts of release agents and 1 part of antioxidants. Wherein, the modified fiber is prepared by comprising the following steps: polystyrene sulfonic acid is added to N-methylpyrrolidone solution, glass fiber is added, boron nitride is added, and polystyrene sulfonic acid modified glass fiber loaded with boron nitride, i.e. modified fiber. The present invention realizes multifunctional modification of fiber by combining the mechanical properties of glass fiber, the chemical properties of polystyrene sulfonic acid and the lubricating properties of boron nitride, so that the fiber-reinforced composite material can withstand tensile and compressive loads, so that the composite material has high strength, high thermal stability and excellent toughness.