1005 results about "Polyphenyl ether" patented technology

The invention discloses a copper-clad plate for a printed circuit board and a preparation method of the copper-clad plate, and relates to the technical field of printed circuit board materials. The invention discloses a preparation method of a copper-clad plate for a printed circuit board, which comprises the following steps of: soaking a reinforcing material in a glue solution, and drying to obtain a prepreg; carrying out hot-pressing treatment on the prepreg and copper foil to obtain a copper-clad plate; the glue solution comprises the following raw materials in parts by weight: 15-20 parts of vinyl-terminated polyphenyl ether, 20-25 parts of epoxy resin, 20-25 parts of difunctional silicon dioxide, 15-25 parts of an organic solvent, 0.3-0.6 part of a curing agent and 0.05-0.1 part of a curing accelerator; the difunctional silicon dioxide cross-linked polyphenyl ether and epoxy resin prepared by the preparation method disclosed by the invention are used as a resin material of a glue solution, and have the characteristics of good heat resistance and excellent mechanical properties.

The invention relates to the technical field of high polymer materials, and discloses a PPE material based on carbon nanotubes and a preparation method thereof. The PPE material prepared by the invention is prepared from the following raw materials in parts by weight: 50-70 parts of polyphenyl ether resin, 8-15 parts of high impact polystyrene, 8-12 parts of modified carbon nanotubes, 5-9 parts of a modified flame retardant, 1-2 parts of a compatilizer, 0.5-1.5 parts of an antioxidant and 0.5-2 parts of a lubricant, the material is an antistatic and flame-retardant material based on carbon nanotubes. Wherein the modified carbon nanotubes can improve the conductivity of the matrix so as to improve the antistatic performance, and the modified flame retardant can have a synergistic effect with phosphate groups in the modified carbon nanotubes so as to significantly improve the flame retardant performance of the matrix.

The invention discloses an antistatic PPO material based on graphene and a preparation method thereof.The preparation method comprises the steps that aminated polyphenyl ether and modified filler react to prepare modified polyphenyl ether, the modified polyphenyl ether is treated with benzenesulfonyl chloride to prepare the antistatic PPO material, when the aminated polyphenyl ether and the modified filler are used, the modified filler is equivalent to a cross-linking agent, and when the modified filler is used for modifying the aminated polyphenyl ether, the modified filler is equivalent to a cross-linking agent; the modified filler is interspersed among the molecular chain segments, graphene is arranged in the modified filler and has a very good conductive effect, so that the material has an antistatic effect, and the surface of the modified filler contains an organic silicon chain segment, so that the antistatic property of the material is improved; when the material is combusted, a phosphorus-containing organic silicon chain segment on the surface of the modified filler can form a P-O-Si compact carbon layer, a nitrogen element on a side chain can generate amino free radicals, then active hydrogen atoms and hydroxyl free radicals are captured, a combustion chain reaction is interrupted, a sulfur element can release sulfur dioxide gas, the oxygen concentration is further diluted, and the oxygen concentration is reduced. Therefore, the material has a good flame-retardant effect.

The invention discloses a CNT-based antistatic MPPE composite material and a preparation method thereof, the composite material comprises the following raw materials by weight: 40-50 parts of modified polyphenyl ether, 40-50 parts of modified polystyrene, 10-15 parts of modified carbon nanotubes and 1-1.5 parts of zinc oxide, the modified carbon nanotubes are added into the composite filler, and the modified carbon nanotubes have a good conductive effect, so that the antistatic performance of the composite material is improved. And when the modified polyphenyl ether, the modified polystyrene, the modified carbon nanotubes and the zinc oxide are subjected to melt blending, under the action of the zinc oxide, the modified polyphenyl ether and the modified polystyrene are compounded and can be subjected to a DA reaction with maleimide on the modified carbon nanotubes to form dynamic crosslinking, so that the antistatic effect of the composite material is improved. Dynamic crosslinking can absorb and disperse energy when the composite material is impacted, and enables a molecular chain segment to generate greater motion when the composite material is impacted, so that deformation of the material is facilitated without breakage.

The invention relates to the field of copper-clad plates, and discloses a low-dielectric-constant high-performance copper-clad plate and a preparation method thereof.The preparation method comprises the specific steps that epoxy resin, phenolic resin, polyphenyl ether modified resin, modified nano silicon dioxide and the like are taken and mixed to obtain a resin glue solution; impregnating glass fabric in the resin glue solution to obtain a prepreg; laminating prepregs, and covering copper foil for hot pressing; the polyphenyl ether modified resin comprises epoxy resin, diallyl cyanate and fluorine-containing polyphenyl ether resin prepared by reaction of polyphenyl ether, bisphenol AF and benzoyl peroxide; the modified nano silicon dioxide is prepared by reacting allyl glycidyl ether, vinyltriethoxysilane and phenyltris (dimethylsiloxane) silane, then grafting with a phosphorus-containing intermediate to prepare a modified additive, and grafting with nano silicon dioxide, and the phosphorus-containing intermediate is prepared by reacting phenylphosphoryl dichloride and eugenol. The copper-clad plate with high flame retardance, high peel strength, heat resistance and low dielectric constant is prepared.

The invention discloses a polyphenyl ether resin composition and application thereof. The polyphenyl ether resin composition comprises the following components in parts by solid weight: 20-75 parts by weight of maleimide resin or maleimide prepolymer; 10-60 parts by weight of a polyphenylene ether resin; 5-50 parts by weight of hydrocarbon resin; the maleimide resin or the maleimide prepolymer contains a limited structural unit. Compared with the prior art, the polyphenyl ether resin composition and the application thereof have the advantages that the maleimide resin or the maleimide prepolymer containing the styrene structural unit is matched with the polyphenyl ether resin and the hydrocarbon resin, so that the compatibility among the components of the polyphenyl ether resin can be improved, the dielectric constant Dk and the dielectric loss tangent Df are reduced, and the toughness is improved; the warping of the plate is improved, the excellent heat resistance is kept, and the excellent comprehensive performance is achieved.

The invention discloses a polyphenyl ether-polyamide composition as well as a preparation method and application thereof. The polyphenyl ether-polyamide composition is prepared from the following components in parts by weight: 34.5 to 51 parts of PPE resin, 9 to 46 parts of aromatic PA resin, 0 to 31 parts of aliphatic PA resin, 6 to 12 parts of a zinc-containing flame retardant, 2 to 4 parts of a phosphazene flame retardant, 0.2 to 1 part of a compatilizer and 2 to 5 parts of a toughening agent, the mass fraction of the total amount of aromatic rings in the polyphenyl ether-polyamide composition is 29-40%. The polyphenyl ether-polyamide composition has relatively good low-temperature toughness, 0-grade CTI and excellent heat resistance on the premise of flame retardant requirements.

The invention discloses a polypropylene composite material as well as a preparation method and application thereof, and belongs to the technical field of polymer engineering plastics. The polypropylene composite material comprises the following components in parts by mass: 58-82 parts of polypropylene, 8-32 parts of polyphenyl ether, 6-22 parts of a compatilizer and 2-6 parts of montmorillonite, the compatilizer comprises polypropylene grafted styrene and polypropylene grafted maleic anhydride; the grafting rate of the polypropylene grafted styrene is greater than or equal to 10%, and the grafting rate of the polypropylene grafted maleic anhydride is greater than or equal to 1.2%. The structure of the polypropylene composite material provided by the invention is a stripping structure or an intercalation structure, and the polypropylene composite material has relatively high bending modulus and excellent heat resistance.

The invention relates to the technical field of wave-transparent composite materials, in particular to a fiber-reinforced resin-based wave-transparent composite material and a preparation method thereof. The cyanate ester resin matrix is modified by thermosetting polyphenyl ether, the dielectric property of the cyanate ester resin is remarkably improved, the glass-transition temperature of the cyanate ester resin is maintained, and the problems of high curing temperature, poor toughness of a cured product, poor manufacturability and the like of the cyanate ester resin are solved by compounding the catalyst and the flexibilizer. The obtained cyanate ester resin system has excellent dielectric properties and humidity and heat resistance, also has good mechanical properties and manufacturability, meets the requirements of hot melt method prepreg preparation and autoclave molding process, and prepares a wave-transparent composite material with low dielectric properties.

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 discloses a modified ceramic flame-retardant polyphenyl ether insulated wire and cable material which is prepared from the following raw materials in percentage by mass: 15%-20% of polyphenyl ether resin, 10%-20% of SEBS thermoplastic elastomer, 4%-8% of polypropylene resin, 3%-8% of maleic anhydride grafted material, 5%-20% of melamine cyanurate, 5%-15% of aluminum diethylhypophosphite, 1%-4% of 2, 3-dimethyl-2, 3-diphenyl butane, 10%-30% of compound ceramic powder and 1%-4% of antioxidant. The insulated wire and cable material disclosed by the invention has outstanding electrical insulativity, flowability and water resistance, relatively good wear resistance and electrical performance, good dimensional stability and relatively high heat resistance; the flame-retardant property is good, and the self-extinguishing property is realized; and the ceramic forming property after high-temperature combustion is excellent, and the ceramic still has excellent insulating property after being formed.

To provide a resin composition which comprises a polyphenylene ether having excellent solvent solubility and has excellent electrical properties, copper foil peeling strength and solvent resistance.SOLUTION: There is provided a resin composition which comprises (A) a polyphenylene ether A containing a repeating unit derived from the following phenol and having a molecular weight distribution (Mw / Mn) determined by gel permeation chromatography (GPC) of 2.0 to 6.0 and a number of OH groups per molecule of 0.8 to 3.0 pieces / molecule, (B) a polyphenylene ether B containing a repeating unit derived from the following phenol and at least one partial structure of the following structures in the molecular skeleton (excluding those corresponding to the polyphenylene ether A), (C) a triallyl isocyanurate and / or a triallyl cyanurate and a crosslinking agent other than (C') a triallyl isocyanurate and a triallyl cyanurate as optional components and (D) an organic peroxide.SELECTED DRAWING: None

A resin composition and an article made therefrom are provided. The resin composition includes: (A) 100 parts by weight of an unsaturated bond-containing polyphenylene ether resin; (B) 20 parts by weight to 150 parts by weight of a copolymer, the copolymer having a structural unit formed by a monomer of Formula (1) and a structural unit formed by a monomer of Formula (2), and the content of the structural unit formed by the monomer of Formula (2) in the copolymer is 55 wt % to 90 wt %; and (C) 10 parts by weight to 40 parts by weight of an unsaturated bond-containing crosslinking agent. The resin composition may be used to make various articles, such as a prepreg, a resin film, a laminate or a printed circuit board, and at least one of the following properties can be improved, including glass transition temperature, Z-axis ratio of thermal expansion, multi-layer board heat resistance, interconnect stress test, dissipation factor aging rate, temperature coefficient of dielectric constant, temperature coefficient of dissipation factor and branch-like pattern at laminate edges.

The present invention relates to a resin composition characterized by a low degree of thermal expansion, a low degree of dielectricity, and a high degree of thermal resistance, and a prepreg, a metal foil laminate, a laminated sheet, and a printed circuit board comprising same. The resin composition comprises a polyphenylene oxide-based resin, a hollow inorganic filler having a porosity of 60-90%, a fluorine resin filler, and a dispersant.

This invention discloses a gypsum-based lightweight flame-retardant board and its preparation method, relating to the field of building materials technology. The gypsum-based lightweight flame-retardant board prepared by this invention is made by foaming a gypsum substrate with a foaming agent and a composite stabilizer, then introducing a self-made flame retardant and other raw materials, casting it between two layers of facing paper, and drying it. The composite stabilizer includes a modified acrylamide copolymer and acrylamide hydrogel. The modified acrylamide copolymer is obtained by copolymerizing N-isopropylacrylamide with silane acrylic acid and then reacting it with hyperbranched polyphosphate. The acrylamide hydrogel is obtained by polymerizing acrylic acid and acrylamide through an aqueous solution. The self-made flame retardant is obtained by reacting ammonium polyphosphate with a hydroxy heterocyclic amino alcohol. The hydroxy heterocyclic amino alcohol is obtained by reacting a heterocyclic amino alcohol with a double-terminated hydroxyl polyphenylene ether. This process gives the gypsum-based lightweight flame-retardant board excellent flame retardancy, mechanical properties, and flame-retardant stability.

The present application relates to the technical field of current collectors, and specifically relates to a multilayer composite film and a current collector prepared from same. The present application provides a preparation method for the multilayer composite film. The multilayer composite film comprises a layer X, a layer Y and a layer Z from top to bottom; the layer X and the layer Z are made of polyimide, and the polyimide is a polycondensation reactant of carboxylic acid anhydride and diamine; and the material of the layer Y is any one or more of polypropylene, polyethylene, polyethylene terephthalate, polybutylene terephthalate, polyvinylidene fluoride, polytetrafluoroethylene, polyphenylene sulfide, polyphenyl ether, polyester, polystyrene and derivatives thereof. The polyimide prepared in the present application solves the problems of low solubility and poor processability of conventional fully aromatic polyimides, and a composite current collector is prepared by using heat resistance and improved surface polarity of polyimides, thereby improving the bonding force between a composite current collector film and a metal layer, and improving the tensile strength of a finished product.

The invention belongs to the technical field of copper-clad plate materials, and relates to a high-speed high-frequency low-CTE copper-clad plate glue solution as well as a preparation method and application thereof, the copper-clad plate glue solution comprises 55-135 parts of a resin composition, 2.5-21 parts of a cross-linking agent, 0.05-1.5 parts of a cross-linking accelerant, 11-54 parts of filler and 38-95 parts of a solvent; the resin composition is prepared from 25 to 45 parts of polyerylene resin, 15 to 35 parts of styrene-butadiene polymer, 15 to 30 parts of bismaleimide and 10 to 25 parts of allyl-terminated polyphenyl ether resin. According to the invention, Dk and Df meet the requirement of ultra-low loss and are greatly improved compared with the traditional PPO system, and meanwhile, the Z-axis CTE is reduced by more than 40%; the halogen-free flame-retardant design meets the environment-friendly requirement, and the high-frequency performance is not influenced; and a standard PCB processing technology is compatible, and the copper-clad plate suitable for 5G millimeter wave communication, automatic driving radar and satellite high-frequency circuits is prepared.

The invention relates to the technical field of coatings, in particular to an on-line spraying PPO / PA alloy material and a preparation method thereof.The on-line spraying PPO / PA alloy material is prepared from, by weight, 40-50 parts of PA66, 30-40 parts of PPO, 4-8 parts of compatilizer A, 0.2-1 part of compatilizer B, 10-20 parts of SBS, 1-3 parts of conductive agent and 0.2-1 part of auxiliaries. Compared with the prior art, the on-line spraying PPO / PA alloy material has the beneficial effects that the on-line spraying PPO / PA alloy material is obtained by blending the compatilizer A (maleic anhydride grafted polyphenyl ether), the compatilizer B, the SBS, the conductive agent and the assistant on the basis of PPO and PA, has good mechanical properties, conductivity and flowing properties, and can meet the use requirements of on-line spraying.

The invention relates to a flame-retardant composition, a flame-retardant layer and a new energy automobile power battery comprising the flame-retardant layer. The flame-retardant composition comprises the following components in percentage by weight: 50-68% of matrix resin which is a mixture of polycarbonate and polyphenyl ether in a weight ratio of (1: 1)-(3: 1); the composite flame retardant comprises a phosphate flame retardant, a cyanamide flame retardant and an inorganic flame retardant according to the weight ratio of 1: (0.5-0.8): (2-2.5), and the inorganic flame retardant is selected from one or more of aluminum hydroxide, antimony trioxide, magnesium hydroxide and zinc borate; 10-20% by weight of a thermally conductive agent; 5 to 10 wt% of a silane coupling agent; and 1-3 wt% of a lubricant. A flame-retardant layer formed by the flame-retardant composition is arranged between a power battery module and an aluminum shell of the new energy automobile power battery, has good flame retardance, heat conduction and mechanical properties, and can meet the use requirements of the new energy automobile power battery.

The invention discloses a foamed polyphenyl ether bead and a preparation method thereof. The material is prepared by compounding polyphenyl ether, a styrene polymer, a three-dimensional fiber microsphere reinforcement, a CNTs coated SiO2 core-shell nucleating agent, modified resin, a flame retardant and an antioxidant according to a specific ratio. The innovation of the invention lies in that a three-dimensional reinforcement with glass beads as a core and carbon fibers as a network and a composite foaming agent with silicon dioxide coated with carbon nanotubes are introduced to synergistically improve the cellular structure and mechanical properties. The preparation process comprises the key steps of component drying, melt blending granulation, carbon dioxide physical foaming under an autoclave aqueous dispersion system and the like. Through component design and surface modification, the foamed bead has the advantages of light weight, high strength, flame retardance and uniform foam structure, and is suitable for the fields of high-end heat insulation and bearing.

The invention belongs to the field of polymer compositions, and particularly relates to an anti-yellowing polyphenyl ether composite material as well as a product and application thereof. The invention provides a yellowing-resistant polyphenyl ether composite material, which is prepared from the following components in parts by weight: 30 to 70 parts of polyphenyl ether resin, 15 to 40 parts of polystyrene, 0 to 15 parts of flame retardant, 0 to 30 parts of reinforcing filler, 0 to 10 parts of compatilizer, 0.1 to 1 part of benzoin, 0.01 to 0.3 part of DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) and 0 to 5 parts of other auxiliaries. The application accidentally finds that 0.01-0.3 part of DOPO with extremely low parts is introduced into the benzoin processing yellowing resistant system of polyphenyl ether, and through the synergistic effect of benzoin and DOPO components and contents, the processing yellowing resistant performance of polyphenyl ether is further improved in the processing process of polyphenyl ether, and the processing yellowing resistant performance of the polyphenyl ether is further improved. And the yellowing resistance in a hot oxygen environment, a natural environment and a humid and hot environment is also greatly improved.

The invention discloses a novel polyphenyl ether / polystyrene foamed bead with a nested structure and a preparation method of the novel polyphenyl ether / polystyrene foamed bead, and belongs to the technical field of microcellular foaming of high polymer materials. The polyphenyl ether / polystyrene foamed bead is prepared from the following raw materials in percentage by mass: 40 to 85 percent of polystyrene, 5 to 40 percent of polyphenyl ether, 5 to 20 percent of polypropylene, 0.1 to 5 percent of heterogeneous nucleating agent, 0.5 to 1.2 percent of antioxidant and 0.1 to 0.3 percent of dispersing agent. According to the invention, raw materials are optimized, polytetrafluoroethylene is added to increase the adsorption effect of the material on a foaming agent, and a sea-island structure formed by polypropylene in a polyphenyl ether / polystyrene matrix is utilized to realize redesign of a foaming bubble pore structure through foaming, so that the composite material which is internally provided with a polystyrene film and has a good foaming effect is obtained. The foam holes with the polyphenyl ether / polystyrene structure are formed in the outer part, so that the foaming temperature required by the polyphenyl ether foaming bead is reduced, and the problem of high foaming temperature of the polyphenyl ether foaming bead in the prior art is solved.

The invention discloses a resin composition and a product prepared from the resin composition. The product comprises a prepreg, a resin film, a laminated board or a printed circuit board. The resin composition comprises the following components in parts by weight: (A) 100 parts of polyphenyl ether resin containing unsaturated carbon-carbon double bonds; and (B) 20-100 parts by weight of phosphorus-containing polyolefin resin, the phosphorus-containing polyolefin resin is composed of a structural unit (a) and a structural unit (b), and / or composed of a structural unit (a), a structural unit (b) and a structural unit (c), the structural unit (a) comprises any one or a combination of a structural unit (a1) and a structural unit (a2), and the structural unit (b) comprises any one or a combination of a structural unit (b1) and a structural unit (b2). More than one of the characteristics of adhesion resistance, glass transition temperature, copper foil peel strength, dielectric property, water absorption, flame retardance, moisture absorption and heat resistance, substrate appearance, alkali resistance and the like of the product is improved. # imgabs0 #

The invention provides a resin composition, a prepreg, a laminated board and a preparation method thereof. The resin composition is prepared from the following components in parts by mass: 40 to 100 parts of phthalonitrile-terminated polyphenyl ether, 10 to 40 parts of phenolphthalein-containing polyarylether amine and 10 to 60 parts of inorganic filler, the structure of the phthalonitrile-terminated polyphenyl ether is as shown in a formula (I), the structure of the phenolphthalein-containing polyarylether amine is as shown in a formula (II), a, m and n are all positive integers, and Y is C1-C3 alkylene or a single bond. The laminated board prepared from the resin composition has excellent comprehensive properties such as high peel strength, high decomposition temperature, high elastic modulus, good flame retardant property, low dielectric coefficient, low water absorption rate and the like.

This application relates to the technical field of PE pipe processing, and specifically discloses a PE pipe and a preparation method thereof. A PE pipe is made of the following raw materials in parts by mass: 60-80 parts by mass of high-density polyethylene, 20-35 parts by mass of polyphenylene ether, 10-20 parts by mass of ethylene propylene diene monomer rubber, 3-8 parts by mass of polyurethane prepolymer, 2-4 parts by mass of maleic anhydride grafted polyethylene, 0.5-1.5 parts by mass of 4,5-diamino-2-thiouracil, 5-12 parts by mass of silicon-based microcapsule-coated basalt particles, 0.5-2 parts by mass of antioxidant, 0.1-1 part by mass of light stabilizer, and 1.5-2.5 parts by mass of glyceryl stearate. The PE pipe prepared by this application has good mechanical properties and anti-aging properties.

The invention discloses a modified polyphenyl ether material as well as foamed beads and a foamed molded body thereof, and belongs to the technical field of chemical engineering. The modified polyphenyl ether material comprises the following components: polyphenyl ether, a cross-linking agent containing carbonyl, and a cross-linking auxiliary agent containing divalent metal ions, wherein carbonyl oxygen atoms in the cross-linking agent are connected with metal atoms in the cross-linking auxiliary agent to form a reversible cross-linking structure. According to the present invention, with the reversible cross-linked structure, the modified polyphenyl ether material has good mechanical property at the normal temperature and the temperature lower than the thermal deformation temperature (HDT), and the reversible cross-linked structure is destroyed during the high temperature preparation process so as to significantly improve the flow property and the processing property of the modified polyphenyl ether material; the method has great significance for solving the problems of poor melt fluidity and difficult processing of the polyphenyl ether material, and provides a new thought for improving the foaming performance of the polyphenyl ether foaming material.

The invention provides a resin composition, a resin film containing the same and a printed circuit board. The resin composition comprises the following components in parts by mass: 5-95 parts of benzocyclobutene modified polyphenyl ether resin, 5-95 parts of a component containing C = C unsaturated bonds, 5-300 parts of a modified filler and 0.1-10 parts of an initiator, the modified filler is an inorganic filler subjected to surface treatment by a double-bond group-containing coupling agent. The benzocyclobutene modified polyphenyl ether resin has good reaction activity, and is compounded with a component containing a C = C unsaturated bond and a modified filler containing a double-bond group to form a condensate with high crosslinking density and excellent interface consistency. The cured product of the resin composition has the advantages of excellent dielectric property, low dielectric loss tangent Df, good dielectric stability, small change amplitude of Df (10GHz) after HAST, and high chemical copper binding force, and can be applied to a high-frequency high-speed printed circuit board prepared by a semi-addition method or an addition method.

The invention relates to the technical field of electrochemistry, in particular to a polymer composite film, a composite current collector and a preparation method thereof, a positive electrode and application thereof. The polymer composite film comprises a polymer base layer, and a first modified layer and a second modified layer which are respectively arranged on two opposite side surfaces of the polymer base layer, the material of the polymer base layer comprises one or more of polyethylene glycol terephthalate, poly (1, 4-cyclohexylenedimethylene terephthalate) and polyethylene glycol terephthalate-1, 4-cyclohexylenedimethylene terephthalate; the first modified layer and the second modified layer respectively and independently comprise the following components: a functional polymer material; the functional polymer material comprises one or more of polyethylene naphthalate, polyadipyl metaphenylene diamine, a liquid crystal polymer, polyformaldehyde, polyphenylene sulfide and polyphenyl ether. The polymer composite membrane disclosed by the invention can be effectively broken when being damaged by relatively strong external force, so that thermal runaway of the battery can be effectively prevented.

The invention relates to the field of materials, and discloses a modified polytetrafluoroethylene resin composition as well as a preparation method and application thereof. The modified polytetrafluoroethylene resin composition is prepared from 10 to 25 parts of polyphenyl ether modified polytetrafluoroethylene powder, 40 to 60 parts of modified filler and 70 to 100 parts of polytetrafluoroethylene emulsion. Through a series of modification treatment, the compatibility of polytetrafluoroethylene and polyphenyl ether and the compatibility of polytetrafluoroethylene and inorganic filler can be improved, the dielectric loss of the inorganic filler is reduced, the thermal stability of the laminated board is improved, and the thermal expansion coefficient is reduced; meanwhile, during sintering, the bonded polyphenyl ether can absorb stress generated by volume shrinkage in the polytetrafluoroethylene crystallization process, and the problem of cracking of the polytetrafluoroethylene composite film can be solved.

The present invention relates to the field of copper clad laminates, and discloses a copper clad laminate with low dielectric constant and high performance and a preparation method thereof. The specific steps are as follows: taking epoxy resin, phenolic resin, polyphenylene ether modified resin, modified nano-silica, etc. and mixing them to obtain a resin glue solution; impregnating glass fiber cloth in the resin glue solution to obtain a prepreg; taking the prepregs and laminating them and hot pressing them with copper foil; the polyphenylene ether modified resin includes epoxy resin, diallyl cyanate, and a fluorinated polyphenylene ether resin prepared by reacting polyphenylene ether, bisphenol AF, and benzoyl peroxide; the modified nano-silica is prepared by reacting allyl glycidyl ether and vinyltriethoxysilane with phenyltris(dimethylsilyl)silane, and then grafting it with a phosphorus-containing intermediate to form a modified additive, and grafting the modified additive with nano-silica. The phosphorus-containing intermediate is prepared by reacting phenylphosphoryl dichloride and eugenol. A copper clad laminate with high flame retardancy, high peel strength, and heat-resistant low dielectric constant is prepared.