1580 results about "Polymer composite materials" patented technology

The invention belongs to the technical field of polymer composite materials, and particularly relates to a high-strength flame-retardant composite material for pipelines and a preparation method thereof. The high-strength flame-retardant composite material for the pipeline is prepared from the following components in parts by weight: 70 to 80 parts of PA12T, 10 to 15 parts of a toughening agent, 20 to 30 parts of fiber reinforced filler, 8 to 16 parts of melamine polyphosphate, 1 to 6 parts of attapulgite, 2 to 4 parts of graphene, 0 to 3 parts of a coupling agent, 0 to 3 parts of a lubricating agent and 0 to 3 parts of an antioxidant. MPP is an N and P double-element synergistic flame retardant, and the flame retardant effect is better. Through the adsorption effect of the attapulgite, the dispersing performance of the MPP in the PA12T can be improved, and the precipitation phenomenon of the MPP can be prevented. The graphene is used as a common flame-retardant carbon-forming agent, and the lamellar structure of the graphene can play a role in resisting molten drops; and moreover, the graphene and the attapulgite with a rodlike structure interact with each other, so that the dispersion performance of the graphene, the attapulgite and the melamine polyphosphate in the nylon resin is promoted.

The invention discloses preparation of DOPO-based hollow polymer microspheres and application of the DOPO-based hollow polymer microspheres in flame-retardant polymers, and belongs to the technical field of high polymer materials. The preparation method of the DOPO-based hollow polymer microspheres comprises the following steps: preparing a template core through self-stable precipitation polymerization, then polymerizing a DOPO-based flame-retardant monomer, an anhydride monomer and a cross-linking agent on the surface of the template core to construct a cross-linking shell layer in situ to obtain copolymer microspheres with a core-shell structure, and finally removing the template through solvent etching to obtain the DOPO-based hollow polymer microspheres. And the DOPO-based hollow polymer microspheres are prepared. The compatibility between the DOPO-based hollow polymer microspheres and a polymer matrix is greatly improved through rich anhydride groups on the surfaces of the DOPO-based hollow polymer microspheres, the flame retardant property of the polymer composite material is improved, the mechanical property of the polymer composite material is greatly improved, and due to the unique hollow structure of the polymer composite material, the flame retardant property of the polymer composite material is greatly improved. The polymer material is endowed with excellent transparency and low dielectric property.

The invention discloses a high-strength long glass fiber reinforced polyamide composite material and a preparation method thereof, and belongs to the field of polymer composite materials. The high-strength long glass fiber reinforced polyamide composite material is prepared from the following raw materials in parts by mass: 31 to 54.5 parts of polyamide resin, 30 to 60 parts of high-modulus alkali-free glass fiber, 4 to 10 parts of graphene oxide master batch, 1 to 3 parts of compatilizer, 0.5 to 3 parts of chain extender master batch and 0.5 to 2 parts of processing aid, the graphene oxide master batch is formed by crosslinking and attaching graphene oxide to polyamide resin PA6; according to the preparation method, the problem of dispersity of graphene oxide in polyamide resin is solved, nylon molecular chains and hydroxyl groups on the surface of graphene oxide are subjected to cross-linking combination under the action of the cross-linking agent, nylon molecules are effectively grafted to graphene oxide lamellas, and the graphene oxide and the glass fibers have a synergistic enhancement effect, so that the graphene oxide / glass fiber composite material is prepared. The mechanical property of the long glass fiber reinforced polyamide composite material is greatly improved, and meanwhile, the composite material is endowed with good conductivity.

The invention discloses a manufacturing process of a circuit board structure of aviation equipment, which comprises the following steps of: providing a carbon fiber reinforced ceramic substrate, after desizing process treatment, coating high-temperature ceramic slurry on the carbon fiber reinforced ceramic substrate, forming a high-temperature-resistant base material layer through vacuum drying, coating an electromagnetic shielding material on the surface of the base material layer, and forming the circuit board structure of the aviation equipment. Designing a circuit pattern, and transferring the circuit pattern to the electromagnetic shielding layer through a laser cutting or etching process to form a circuit layout; wiring the copper alloy film according to the circuit pattern, and combining the copper alloy film with the polymer composite material middle layer through a lamination process to form an electrical connection layer; coating the surface of the circuit board with a resin material, performing curing treatment, mounting a metal connecting piece in the edge area of the circuit board, performing connection in a crimping manner, then performing a 3D printing process, and printing connecting points on the surface of the circuit board; the circuit board provided by the invention has the advantages of high temperature resistance, electromagnetic interference resistance, support and excellent protection performance.

The invention relates to the field of civil engineering waterproof materials, in particular to a nano bentonite-polymer composite material with high salt tolerance and a preparation method thereof, and the nano bentonite-polymer composite material is especially suitable for a sodium-based bentonite waterproof blanket in a saline soil area or a marine environment, and the preparation method comprises the following steps: (1) preparing nano bentonite lamellar colloidal dispersion liquid; (2) introducing and mixing an electrostatic screening agent and a polymerizable monomer; (3) carrying out in-situ free radical polymerization reaction; and (4) post-treatment and finished product preparation. By constructing a three-dimensional interpenetrating hierarchical structure composed of a covalent grafted polymer network, a physically anchored electrostatic screening agent and a stripped bentonite nanosheet layer, effective protection of a bentonite core anti-seepage unit is realized, so that the adaptability and long-term stability of the material under a complex water quality condition are remarkably improved.

The invention relates to an impact-resistant chlorinated polyvinyl chloride composite material and a preparation method thereof, and belongs to the technical field of polymer composite materials. The composite material comprises the following components: 100 parts of CPVC resin, 6.5 to 9.5 parts of a modified impact modifier, 2.6 to 3.2 parts of a heat stabilizer, 1.5 to 2 parts of a lubricant, 1.2 to 1.6 parts of a processing aid, 0.2 to 0.25 part of a light stabilizer and 8 to 11 parts of a filler, the modified impact modifier takes a POSS cage structure as a core, a branch chain sequentially contains thioamide-secondary amine-tertiary amine structures, a polarity gradient is formed and fully extends into a macromolecular chain of CPVC to transmit and dissipate impact energy, meanwhile, the amine structure interacts with chlorine groups in a molecular chain of CPVC to form molecular anchoring, expansion of crazes is inhibited, and the impact strength of the CPVC is improved. The continuity and the stability of a bonding interface are maintained, so that the composite material keeps relatively high mechanical strength and thermal stability.

The invention discloses a multi-layer composite barrier film and a production process thereof, and belongs to the field of polymer composite materials. Aiming at the problems of obvious performance attenuation, poor interlayer binding force and low step-by-step compounding process efficiency of a barrier film in a humid and hot environment in the prior art, the invention provides a five-layer asymmetric structure design: an outer layer, a bonding layer, a barrier layer, a bonding layer and an inner layer. Wherein the barrier layer is formed by blending EVOH and MAH-PA6 and cooperating with nano montmorillonite to form a multi-barrier network, so that the oxygen permeability is smaller than or equal to 0.3 cm / (m.24h. 0.1 MPa), and the water vapor permeability is smaller than or equal to 1.5 g / (m.24h). The production process innovation comprises five-layer co-extrusion melt flow rate ratio control, three-roller gradient cooling and a bidirectional plasma processing technology, the continuous production speed is larger than or equal to 120 m / min, and the interlayer peeling strength is larger than or equal to 8 N / 15 mm. The barrier property stability is remarkably improved.

The invention belongs to the technical field of polymer composite materials, and particularly relates to an oil-resistant interior material. The material comprises a porous base material layer, a fluorine-containing polymer and organic silicon resin blended oil-resistant functional layer and a micro-nano structure layer with a periodic micro-bulge array, surface modified nanoparticles are distributed in the functional layer in a gradient manner, and the micro-bulge surface is covered with a perfluoropolyether / fluorinated silicon dioxide composite coating; through a synergistic effect of a low-surface-energy oleophobic interface formed through chemical bonding and curing and a micro-structure capillary lifting effect, anti-permeation barrier of high-viscosity grease is realized, and meanwhile, mechanical wear resistance and thermal stability are improved by virtue of a nano-particle enhanced cross-linked network; and continuous imprinting and an ultraviolet-thermal dual-curing process are combined to achieve high-efficiency manufacturing with zero solvent residue, and finally the interior material with long-acting oil resistance, high environmental tolerance and industrial mass production feasibility is obtained.

The invention relates to the technical field of polymer composite materials, in particular to an aramid nanofiber low-frequency wave-absorbing composite material and a preparation method thereof. The aramid nanofiber low-frequency wave-absorbing composite material is prepared from the following raw materials: magnetic wave-absorbing fibers and aromatic polyamide nanofibers, the magnetic wave-absorbing fiber is prepared from a raw material system comprising FeCo magnetic wave-absorbing filler, aromatic polyamide fiber and a hyperbranched polysiloxane modifier. The aramid nanofiber low-frequency wave-absorbing composite material prepared by taking the magnetic wave-absorbing fibers and the aromatic polyamide nanofibers as raw materials not only has excellent mechanical properties (the tensile strength can reach 133 Mpa), but also has excellent wave-absorbing performance (the minimum reflection loss can reach-46.8 dB, and the low-frequency effective absorption bandwidth (EAB) is 2.24 GHz (5.52 GHz to 7.76 GHz). The method can be widely applied to the fields of communication and electronic equipment.

The invention discloses a preparation process of a high-temperature-resistant and wear-resistant polymer composite material, which comprises the following preparation steps: (1) selecting polyether-ether-ketone as matrix resin, and drying the matrix resin at 150 DEG C for 4 hours; (2) preparing porous sphere-like boron carbide ceramic powder; (3) carrying out surface treatment on the prepared porous sphere-like boron carbide ceramic powder; and (4) uniformly mixing the boron carbide ceramic powder subjected to surface treatment in the step (3) and polyether-ether-ketone in a mild mixing manner, compounding with carbon fibers, and extruding and granulating by using a double-screw extruder to obtain the high-temperature-resistant and wear-resistant polymer composite material. Through the mode, the composite material prepared by the method does not contain PFAS chemical substances, is superior to the existing PTFE material in the aspects of wear resistance, environmental protection property, high temperature resistance and the like, and is an ideal reliable PTFE substitute material.

The invention discloses an ethylene propylene diene monomer (EPDM) foam material based on modified red brick powder and a preparation method thereof, and belongs to the technical field of polymer composite materials. The red brick powder is subjected to surface modification, so that the dispersity, compatibility and mechanical enhancement effect of the red brick powder in an EPDM matrix are improved, then the red brick powder is uniformly dispersed in the EPDM matrix, and high strength, low density and excellent foam structure of the foam material are realized by optimizing a foaming process. The EPDM foaming material provided by the invention has excellent mechanical properties, flame retardancy and foam structure, and is applicable to sealing, heat insulation, shock absorption and the like in the fields of automobiles, buildings, electronics and the like.

The invention discloses a rare earth hybrid flame retardant as well as a preparation method and application thereof, and belongs to the technical fields of inorganic synthesis, flame retardants and high polymer materials. Rare earth hydroxide is successfully loaded on the surface of a flame retardant through an in-situ deposition method to prepare a rare earth hybrid flame retardant, and the rare earth hybrid flame retardant is further dispersed in a high polymer material matrix through melt blending to prepare the flame-retardant high polymer composite material. The hybrid flame retardant prepared by a deposition method can significantly improve the dispersion compatibility of the flame retardant in a high polymer material, and effectively alleviates the mechanical property degradation caused by the filling of the traditional flame retardant; based on the gas phase-condensation phase synergistic effect of the rare earth hydroxide and the flame retardant, the flame retardance and smoke suppression performance of the high polymer material can be synchronously improved. The rare earth hybrid flame retardant can be applied to various high polymer materials such as polyolefin cables, thermoplastic elastomers, polyurethane and the like, can synchronously improve flame retardance, smoke suppression, mechanical performance and comprehensive performance, and has a wide application prospect.

The invention discloses an oil exploitation tensile cable based on a high polymer material and a production method thereof, and relates to the technical field of cables, the cable comprises a conductor and an insulating layer wrapping the conductor, the insulating layer is made of a bio-based high polymer composite material, the bio-based polymer composite material comprises the following components in parts by weight: 50-70 parts of a bio-based polymer matrix and 20-30 parts of reinforced fibers. The bio-based polymer composite material is adopted as an insulating layer of the tensile cable for oil exploitation, so that the environmental protection performance and biodegradability of the tensile cable for oil exploitation are improved; the material is composed of polylactic acid, a polyhydroxyalkanoate bio-based polymer matrix and a plurality of high-performance additives, conventional synthetic fiber reinforcement is included, natural fibers are introduced to be compounded with a bio-based polymer material, and the unique fiber structure and surface performance of the material can form good interaction with bio-based polymers, so that the high-performance composite material is obtained. Therefore, the strength and toughness of the material are improved.

The invention discloses a high-impact-resistance transparent chemical-resistant PC / PCTG alloy and a preparation method thereof, and belongs to the technical field of polymer composite materials. The PC / PCTG alloy is prepared from the following raw materials in parts by weight: 10 to 50 parts of PC, 20 to 90 parts of PCTG, 1 to 5 parts of a toughening agent, 0.3 to 0.5 part of an antioxidant, 0.2 to 0.5 part of a lubricating agent and 0.2 to 0.4 part of an ester exchange inhibitor. The PC / PCTG alloy prepared from the preparation raw materials has high transparency, high impact, heat resistance and chemical resistance, and is wide in application scene. The preparation method comprises the following steps: carrying out extrusion, cooling, granulation, drying and injection molding on the preparation raw materials mixed according to the ratio. The method is simple and easy to control and can be used for industrial production.

The invention discloses a fluoride-free reinforced wear-resistant polyketone composite material as well as a preparation method and application thereof, and relates to the technical field of polymer composite materials. The fluoride-free reinforced wear-resistant polyketone composite material comprises polyketone resin, glass fibers, modified ultra-high molecular weight polyethylene, an antioxidant and a lubricant, wherein the modified ultra-high molecular weight polyethylene is obtained by modifying branched-chain-free linear polyethylene with the molecular weight of 2 million or more, and the dosage of the modifier is 1%-5% of that of the ultra-high molecular weight polyethylene. The modified ultra-high molecular weight polyethylene, the glass fiber and the polyketone resin are subjected to blending modification, and the characteristics of good wear resistance of the polyketone resin and high strength of the glass fiber are combined; meanwhile, the friction coefficient is low after the ultra-high molecular weight polyethylene is modified, the compatibility with the polyketone resin is enhanced, the dispersion is more uniform, and the heat resistance and friction performance of the polyketone resin are comprehensively improved. In addition, due to the use of fluorine-free, the safety of the polyketone composite material is improved, and meanwhile, the application market of the polyketone composite material is expanded.

The invention relates to a glass fiber reinforced PET composite material and a preparation method thereof, and belongs to the technical field of polymer composite materials. The composite material is prepared from the following raw materials in parts by weight: 100 parts of PET (Polyethylene Terephthalate) master batch, 32 to 45 parts of modified glass fiber, 0.19 to 0.24 part of nucleating agent, 1.6 to 2 parts of lubricating agent and 0.12 to 0.15 part of antioxidant, the modified glass fiber is prepared by grafting sulfydryl on the surface of glass fiber by KH-580 to prepare sulfhydrylated glass fiber, reacting tert-butyldimethylamine with 2-bromoethanol to form hydroxyl-terminated quaternary ammonium salt, substituting with octylene trichlorosilane to form a modifier, and adding alkenyl containing alkyl long chains introduced into the modifier molecule with the sulfydryl grafted on the surface to prepare the modified glass fiber. Introducing modifier molecules to the surfaces of the glass fibers; and the modified glass fiber improves the strength of the composite material and keeps high impact resistance.

The invention relates to the technical field of functional polymer composite materials, and provides diatomite modified composite super absorbent and rapid absorbent resin and a preparation method thereof. The preparation raw materials of the diatomite modified composite high-water-absorption and rapid-water-absorption resin provided by the invention comprise acrylic acid, acrylamide, sodium hydroxide, N, N '-methylene bisacrylamide, ammonium persulfate and modified diatomite. The diatomite is modified by the silane coupling agent, the agglomeration problem of the diatomite is solved, the compatibility with organic monomers is improved, and the modified diatomite, acrylic acid and acrylamide are utilized to construct an organic-inorganic synergistic three-dimensional porous network structure, so that the resin has ultrahigh water absorption rate, rapid water absorption performance and good water retention stability. Meanwhile, the preparation method disclosed by the invention does not need nitrogen protection, has the advantages of simple process, controllable raw material cost and easiness in industrial mass production, and is suitable for multiple fields such as water-saving agriculture, soil moisturizing, landscaping and the like.

The invention discloses a tough full-bio-based polylactic acid / polyamide composite material and a preparation method thereof, and belongs to the technical field of polymer composite material preparation. The tough polylactic acid / polyamide composite material comprises polylactic acid, bio-based polyamide, a core-shell amide modified material, a hydrolysis stabilizer, an antioxidant and a chain extender. The core-shell amide modified material is prepared by filling a functional elastomer copolymer with amino nanoparticles. The core-shell amide modified material formed on the basis of the amino nanoparticle reactive filling functional elastomer copolymer has a micro core-shell structure formed in situ and a large number of amido bonds, so that the number of hydrogen bonds between molecular chains of a blend system is increased, and entanglement and intermolecular acting force between micro molecular chains of the blend material are improved; therefore, the system compatibility is improved, the absorption of the material on external stress and energy is enhanced, more obvious plastic deformation is generated when the material is stressed and deformed, and the material is endowed with better mechanical properties.

The invention belongs to the technical field of composite material design, and discloses a polymer composite material design method based on LLM knowledge database construction and reasoning optimization, and the method comprises the following steps: S1, target performance setting; s2, constructing a knowledge database; s3, constructing a reverse design model; s4, constructing a performance verification module; and S5, performing multi-round test-verification design loop optimization. According to the method, an intelligent design method integrating target setting, semantic knowledge database construction, a design assistant, a performance verifier, a prompt engineering module and a language model material knowledge system is provided, closed-loop reasoning and feedback of structure-mechanism-performance are achieved through multiple rounds of DA-VM collaborative optimization, and the design efficiency is improved. The method has the advantages of high design efficiency, strong structure generation rationality, accurate performance prediction, knowledge evolvable and the like, and is suitable for intelligent rapid development of the high thermal conductivity-wave absorbing-shielding-mechanical integrated functional polymer composite material.

The invention discloses a wide-temperature energy storage aerogel / polymer composite material and a preparation method thereof.The preparation method comprises the steps that oxide aerogel with a three-dimensional skeleton structure is subjected to silanization treatment to obtain hydrophobic oxide aerogel, then the hydrophobic oxide aerogel is dispersed into a solvent to obtain dispersion liquid, and then the dispersion liquid is subjected to ultrasonic treatment to obtain the wide-temperature energy storage aerogel / polymer composite material. The preparation method comprises the following steps: sequentially adding a diamine monomer and an anhydride monomer into a dispersion liquid, reacting under stirring to obtain a polyamide acid precursor solution dispersed with hydrophobic oxide aerogel, carrying out film casting on the polyamide acid precursor solution to obtain a dry film, and carrying out imidization treatment on the dry film to obtain the aerogel / polymer composite material. The obtained aerogel / polymer composite material can still maintain high energy storage performance and stability even at extreme ambient temperature.

The invention relates to the technical field of polymer composite materials, and discloses a nano-ceramic-based composite insulating coating and a preparation method thereof, and the coating is prepared from a composite resin matrix, a composite functional ceramic filler, a double-reactivity organosilicon linker and an initiator. Wherein the composite resin matrix is composed of vinyl-terminated polydimethylsiloxane and a vinyl ether functionalized fluorocarbon copolymer, and a soft and rigid interpenetrating network structure is formed. The composite functional ceramic filler is prepared from needle-shaped silicon nitride, flaky hexagonal boron nitride, nano silicon dioxide, nano cerium oxide and nano barium titanate. According to the invention, a chemical bonding interface is constructed between the inorganic filler and the organic resin, and the synergistic effect of the composite matrix and the multifunctional filler is optimized, so that the coating has excellent adhesive force, flexibility and thermal shock resistance, obtains high volume resistivity and breakdown strength, and meets the insulation protection requirements under harsh working conditions.

The invention discloses a nanofiber-containing polymer composite material and a preparation method thereof, and the nanofiber-containing polymer composite material is prepared from the following raw materials in parts by weight: 90-100 parts of polypropylene, 10-15 parts of nylon 6, 13-16 parts of a modified flame retardant, 4-7 parts of modified carbon nanotubes, 3-5 parts of a compatilizer, 0.5-0.8 part of an antioxidant and 0.3-0.5 part of a lubricant. According to the composite material, polypropylene and nylon 6 are blended, and a modified flame retardant prepared by a formulated method, a modified carbon nanotube, a synergistic compatilizer and other assistants are added, so that the defects that an existing polypropylene material is easy to degrade and inflammable, a traditional flame retardant and an antioxidant are easy to migrate and lose efficacy and the like are effectively overcome; according to the polypropylene composite material, the mechanical property of the material is maintained and improved while efficient flame retardance and excellent weather resistance and aging resistance (especially ultraviolet aging resistance) are achieved, the problem that in the prior art, performance in multiple aspects is difficult to consider is solved, and the application range of the polypropylene composite material is widened.

The invention discloses an antistatic EVA foam material and a preparation method thereof, and belongs to the technical field of polymer composite materials. The preparation method comprises the following steps: weighing 90-100 parts of EVA, 15-25 parts of an ethylene-octylene copolymer, 10-18 parts of modified graphene, 2-4 parts of a foaming agent, 0.5-1 part of a lubricant, 0.5-1 part of zinc oxide and 0.1-0.5 part of a cross-linking agent, mixing in an internal mixer, mixing in an open mill, pressing the materials into sheets, finally putting the sheets into a preheated plate vulcanizing machine mold cavity, and carrying out mold pressing foaming to obtain the antistatic EVA foaming material. The modified graphene contains a lipophilic long carbon chain and a benzene ring, so that the modified graphene has good compatibility with the remaining raw materials, and the modified graphene containing the graphene, the hindered phenol structure and the quaternary ammonium salt structure can be highly dispersed in the EVA foaming material and fully plays a role, so that the EVA foaming material disclosed by the invention has efficient and lasting antistatic performance, antibacterial performance and anti-aging performance.

The invention relates to the technical field of polymer composite materials, in particular to a PCT resin composition and a preparation method and application thereof.The PCT resin composition is prepared by feeding a PCT resin premix and a reinforcing agent into a main feeding system and a side feeding system of a double-screw extruder respectively according to the mass ratio of (57.9-123): (5-20) and conducting melt extrusion; according to the invention, the PCT resin composition with excellent performance is obtained through a specific formula, a ratio and combination corresponding to the formula and a specific preparation process, and the excellent performance enables the PCT resin composition prepared by the invention to meet related requirements of the PCT resin composition as a raw material for preparing a high-end packaging material.

The invention provides a lightweight harmonic speed reducer, and relates to the technical field of speed reducers. A flexible gear is respectively connected with a wave generator and an inner structural body of a crossed roller bearing through an elastic meshing interface; an inner gear matched with the flexible gear in tooth shape is arranged on the inner side of the inner structure body. The invention has the beneficial effects that the internal gear and the crossed roller bearing are integrally designed, so that the number of assembly components is reduced, the volume of parts is reduced, the axial size is reduced, the structural rigidity is improved, the stress distribution of a transmission interface is more uniform, the service life is effectively prolonged, and the assembly difficulty is reduced; the crossed roller bearing is made of a polymer composite material, and the weight of the crossed roller bearing is reduced by 30-50% compared with that of a traditional metal material, so that the weight of the harmonic speed reducer can be greatly reduced, the burden of a driving motor is reduced, the service life of the driving motor is prolonged, the elasticity is increased due to the design of the axial hollow roller, and the precision error and the assembly error of parts can be absorbed; and a gap between the roller and the track is eliminated through elastic deformation, so that transmission without a back gap is achieved.

The invention discloses a halogen-free flame-retardant benzoxazine-epoxy / aramid fiber composite material and a preparation method thereof, and belongs to the technical field of polymer composite materials. The composite material is obtained by heating and curing main chain type phosphorus-containing benzoxazine, epoxy resin and aramid fiber according to the mass fraction ratio of (1%-50%): (40%-70%): (30%-70%); the main chain type phosphorus-containing benzoxazine is prepared by carrying out Mannich condensation reaction on phosphorus-containing diamine, bisphenol and paraformaldehyde according to the molar ratio of 1: 1: (4.1-4.4). According to the prepared composite material, main chain type phosphorus-containing benzoxazine modified epoxy resin serves as a matrix, the matrix and aramid fibers are subjected to heating curing to prepare the composite material, benzoxazine is crosslinked with the aramid fibers and the epoxy resin when subjected to ring opening polymerization, the interface bonding performance between the aramid fibers and the epoxy resin can be remarkably improved, and the composite material can be used for preparing the aramid fibers and the epoxy resin. The mechanical property of the composite material can be effectively improved; meanwhile, benzoxazine contains phosphorus, so that the flame retardant property of the composite material can be improved, and the application field of the aramid fiber composite material is expanded.

The invention relates to a high-gloss high-glass-fiber-content nylon 66 composite material and a preparation method thereof, and belongs to the technical field of polymer composite materials. The composite material is prepared from the following components in percentage by weight: 50 to 60 percent of alkali-free glass fiber, 2.2 to 3.5 percent of highlight compatibilizer, 3.5 to 5 percent of flexibilizer, 0.15 to 0.2 percent of antioxidant, 0.6 to 0.9 percent of processing aid and the balance of nylon 66 resin, the high-gloss compatibilizer is prepared by the following steps: substituting n-alkyl alcohol and vinyl trichlorosilane to prepare an intermediate 1, initiating addition by methyl mercaptoacetate and unsaturated double bonds of the intermediate 1 to prepare an intermediate 2, and finally performing amine ester exchange on gamma-aminopropyltriethoxysilane and terminal methyl ester of the intermediate 2. The highlight compatibilizer effectively reduces the content of a high crystal region-low crystal region interface in a composite system and reduces scattering of light, so that the composite material keeps higher glossiness.

The invention discloses an environment-friendly EVA (Ethylene Vinyl Acetate) material and belongs to the technical field of polymer composite materials. The environment-friendly EVA material is prepared from the following components: EVA resin, a bio-based dynamic cross-linking agent DBX-200, a natural fiber reinforced network, a hybrid flame-retardant filler, a bio-based plasticizer, zinc oxide, zinc stearate and an antioxidant. The bio-based dynamic cross-linking agent DBX-200 is introduced to replace a traditional toxic peroxide cross-linking system, pollution-free cross-linking is achieved, and the material is endowed with a self-repairing function. The natural fiber reinforced network is composed of silane coupling agent modified bamboo fibers and carboxylated nanocellulose, a multi-stage reinforced structure is formed, and the mechanical property is remarkably improved. The hybrid flame-retardant filler coats Mg (OH) 2 / HNTs through dopamine, so that synergistic flame retardance of a gas phase and a condensed phase is realized; the bio-based plasticizer is compounded by acetylated tributyl citrate and epoxidized cashew nut oil, and the plasticizing efficiency and the migration resistance are both considered. The material has the characteristics of high mechanical property, excellent flame retardance and environmental friendliness, and is suitable for the fields of shoemaking and the like.

The invention relates to the technical field of polymer composite materials, and discloses an excimer skin-touch coating and a preparation method thereof.The coating is prepared from polyurethane dispersoid, organic silicon modified acrylic resin, a skin-touch additive, inorganic pigment filler, a solvent and a functional additive, the preparation method comprises the following steps: compounding base materials of polyurethane and organic silicon modified acrylic resin to form an interpenetrating network skeleton, then introducing a skin feeling auxiliary agent and a pigment filler step by step to realize gradient dispersion, and finally finishing system optimization through the synergistic effect of rheological regulation and functional auxiliary agents. Through a molecular structure interpenetrating network, intelligent process control and environmental protection technology integration, the core problems of easy touch attenuation, strong environmental sensitivity, auxiliary agent migration, pollution emission and the like of a traditional skin-touch coating are solved. The technology of gradient copolymerization anchoring, humidity dynamic compensation, closed-loop process control and the like is creatively fused, and multiple breakthroughs of long-acting skin feeling, high environmental adaptability and green production of the coating are achieved while excellent mechanical performance is kept.

The invention provides an antistatic talcum powder and graphene composite reinforced material and an in-situ polymerization process thereof, and belongs to the technical field of polymer composite materials. According to the antistatic talcum powder and graphene composite reinforced material and the in-situ polymerization process thereof, the antistatic talcum powder and graphene composite reinforced material is prepared from the following raw materials in parts by weight: 100 parts of matrix resin, 5-30 parts of modified talcum powder, 0.5-5 parts of functionalized graphene and 0.1-2 parts of an antistatic synergist, the modified talcum powder is subjected to surface treatment by a silane coupling agent, the particle size range is 1-10 [mu] m, and the functionalized graphene is graphene oxide or reduced graphene oxide. Through the synergistic effect of the silane coupling agent modified talcum powder and the functionalized graphene and in combination with the ionic liquid antistatic agent, the surface resistance of the material is remarkably reduced. Nanoscale dispersion is realized by adopting an in-situ polymerization process, and the method is suitable for the field of high-performance engineering plastics.