385 results about "Polyphenyl ether" patented technology

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 technical field of functional composite materials, and particularly relates to an all-organic epoxy resin composite material as well as a preparation method and application thereof. The method comprises the following steps: S1, heating, melting and blending epoxy resin and phenolic hydroxyl polyphenyl ether to obtain a composite system; s2, adding a curing agent and a catalyst into the composite system, heating, stirring, reacting, vacuumizing, defoaming, casting the obtained mixed solution into a mold, curing, cooling and demolding to obtain the all-organic epoxy resin composite material. The heat conductivity coefficient of the obtained composite material is improved by 44.2% compared with that of pure epoxy resin, and the thermal expansion coefficient is reduced by 32.8%. The method is mild in condition, short in technological process, low in energy consumption and suitable for large-scale production, an innovative thought and an effective strategy are provided for development of a high-performance all-organic electronic packaging material, and silicon-free and ceramic-free all-organic upgrading of the packaging field is expected to be promoted.

The invention belongs to the field of low-dielectric high polymer materials, and discloses a low-dielectric thermosetting polyphenyl ether-hydrocarbon resin polymer as well as a preparation method and application thereof. The structural formula of the thermosetting low-dielectric polyphenyl ether-hydrocarbon resin polymer is as shown in formula I in the specification. According to the invention, the polyphenyl ether is modified through a redistribution reaction, so that the molecular weight of the polyphenyl ether is reduced, the allyl is grafted at the tail end, and a cross-linking reaction is carried out through double bonds on the allyl and double bonds on hydrocarbon resin, so that the problem of system compatibility is fundamentally solved. Meanwhile, the balance between the flexibility of the hydrocarbon resin and the rigidity of the polyphenyl ether is realized, and the mechanical property and the heat resistance of the material are improved.

The invention provides a low-loss high-dielectric constant polyphenyl ether composite material and a preparation method thereof. The polyphenyl ether composite material comprises the following components in parts by weight: 15-40 parts of polyphenyl ether, 5-20 parts of polystyrene, 2-10 parts of a compatilizer, 2-10 parts of a flexibilizer, 0.5-1 part of an antioxidant, 1-3 parts of a lubricant and 20-62 parts of a dielectric modifier, the dielectric modifier is needle-shaped titanium dioxide subjected to surface modification treatment, the dielectric constant of the composite material is close to 20 and the dielectric loss can be as low as 0.002 under the high frequency of 1.1 GHz under the same action of all the components, and the comprehensive dielectric property is remarkably superior to that of an existing product; meanwhile, the prepared composite material also keeps excellent mechanical properties and heat resistance, and the stability of the dielectric constant of the material in a humid environment is also improved.

The invention discloses a polyamide / polyphenyl ether alloy material and a manufacturing method thereof, and is used for solving the problems that an existing polyamide / polyphenyl ether alloy material cannot meet UL94 V-0-level flame retardance, high insulativity of CTI greater than or equal to 700V and low precipitation (lt) after long-term damp-heat aging at the same time under the ultra-thin thickness of 0.6 mm; 0.1%) and a high performance retention rate (gt; 90%). The polyamide / polyphenyl ether alloy material comprises the following components in parts by mass: 55-75 parts of polyamide 66 resin; 25 to 45 parts of polyphenyl ether resin pre-irradiated by gamma rays; 10 to 20 parts of a silicone-coated diethyl aluminum phosphinate flame retardant with a core-shell structure; 5-10 parts of a maleic anhydride grafted high impact polystyrene compatilizer pre-irradiated by gamma rays; 20-30 parts of hydrolysis-resistant glass fiber of which the surface is treated by a silane coupling agent; 3-8 parts of tetrapod-like zinc oxide whiskers; 2 to 5 parts of a CTI synergist; and 1-2 parts of an anti-precipitation agent.

The invention discloses a polyamide composite material, a preparation method thereof and a connector. The polyamide composite material comprises the following components in parts by weight: 25-65 parts of polyamide resin, 25-55 parts of polyphenyl ether resin, 3-15 parts of an organic phosphorus halogen-free flame retardant and 0.3-4 parts of a stabilizer. The stabilizer is prepared from hydroxyapatite and wollastonite; the polyamide resin comprises aliphatic polyamide resin and semi-aromatic polyamide resin. The polyamide composite material disclosed by the invention has high insulation and pressure resistance in a high-salt-concentration application environment.

The invention relates to a resin composition, a prepreg, a circuit substrate and a printed circuit board. The resin composition at least comprises: (1) functionalized modified polyphenyl ether resin; (2) hydrocarbon resin, wherein the Vicat softening point of the hydrocarbon resin is 80 DEG C to 240 DEG C; the structural formula of the silicon-nitrogen resin is shown in the formula (1), n is a natural number ranging from 10 to 200, R1, R2, R3, R4 and R5 are independently selected from-H,-OH, amino, C1-C6 alkyl, C1-C6 alkenyl, C6-C12 aryl, C1-C6 alkyl substituted C6-C12 aryl, acrylate or C1-C6 alkyl substituted acrylate, and a molecular chain of the silicon-nitrogen resin at least comprises Si-H groups and Si-vinyl groups. The circuit substrate prepared from the resin composition has high peel strength, high modulus strength, excellent electrical properties and high heat resistance, and has a wide application prospect.

The invention relates to the technical field of high-performance polypropylene, and discloses a corrosion-resistant polypropylene-based composite material, a preparation method thereof and application of the corrosion-resistant polypropylene-based composite material in an automobile fuel tank. The polypropylene-based composite material comprises the following components in parts by weight: 60-90 parts of polypropylene resin, 10-40 parts of a polyphenyl ether copolymer and 0.1-0.3 part of an antioxidant, after the alkyl chain is introduced into the polyphenyl ether copolymer material, the compatibility between the polyphenyl ether copolymer material and polypropylene becomes good, the phase separation defect between the polyphenyl ether copolymer material and polypropylene is reduced, the tensile strength, bending strength and the like of the composite material can be enhanced, and the side chain of the polyphenyl ether copolymer contains a benzene ring with high structural stability, so that the strength of the composite material can be further improved. Meanwhile, the composite material is low in oil absorption rate and excellent in oil corrosion resistance.

This invention belongs to the field of polymer materials, specifically relating to a low-heat-shrinkage polymeric film for laser drilling and its preparation method. The film comprises modified polyphenylene ether resin, vinyl-containing benzoxazine resin, a specific cationic initiator, a toughening agent, and inorganic modified fillers: gadolinium lanthanum zirconate core-shell nanocrystals and lithium aluminum borosilicate nanowires. The preparation method includes: first, surface-treating the two inorganic fillers with a silane coupling agent and then dispersing them in a solvent to obtain a slurry; then, mixing this slurry with the modified polyphenylene ether resin, vinyl-containing benzoxazine resin, cationic initiator, and toughening agent to form a homogeneous adhesive; finally, coating the adhesive onto a carrier film and drying and curing it at three temperature stages from low to high to obtain the finished film. The film prepared by this method exhibits extremely low heat shrinkage during laser drilling, effectively controlling resin protrusion or indentation defects on the hole wall, and significantly improving the quality and reliability of micropore processing.

Provided is a novel compound that can achieve both dielectric properties and desmearability after curing. A radical polymerizable group-containing ester compound according to an embodiment comprises: an ester bond-containing molecule that consists only of one or more first units which each have a structure derived from a polyphenylene ether having hydroxy groups at both terminals, and one or more second units which each have a structure derived from a bifunctional or trifunctional aromatic acid halide and which are bonded to the first units by ester bonds; and a radical polymerizable group that is added to each molecular terminal of the ester bond-containing molecule.

A resin composition includes 100 parts by weight of an unsaturated C═C double bond-containing polyphenylene ether resin; 5 parts by weight to 100 parts by weight of a compound of Formula (1), a compound of Formula (2), an oligomer of the compound of Formula (1), an oligomer of the compound of Formula (2) or a combination thereof; and 5 parts by weight to 100 parts by weight of a benzocyclobutene-modified polyolefin. Moreover, also provided is an article made from the resin composition, including a prepreg, a resin film, a laminate or a printed circuit board, and improvements in various properties can be achieved including post-plating copper foil peeling strength uniformity, Z-axis coefficient of thermal expansion and storage modulus variation rate.

Provided: A curable resin laminate with low dielectric properties, capable of easily fabricating an insulating layer with excellent adhesion (peel strength) to the conductor layer. A curable resin laminate comprising: a first resin layer formed of a first curable composition; and a second resin layer laminated on the first resin layer and formed of a second curable composition, the second resin layer having a thickness of 5-35% relative to the total thickness of the first and second resin layers, the first curable composition comprising (A1) polyphenylene ether and filler, wherein the filler content (M) as a total solid component is... B1 The content of the second curable composition is 30% or more by mass, and the content of the filler as a solid component is (M). B2 () is less than 40% by mass, which is M B1 >M B2 The slopes of (A1) and (A2) calculated from the conformation diagrams are less than 0.6.

The object of the present invention is polyphenylene oxide based film with crystalline nanoporous phases with surface area equal to or greater than 30 m2 / g, preferably greater than 100 m2 / g, and a procedure for the attainment thereof.

A method of forming a porous carbon includes pyrolyzing a functionalized polyphenylene ether to provide a porous carbon material. The porous carbon material has a specific pore distribution. A porous carbon material prepared according to the method and uses thereof are also disclosed.

The invention relates to a fluoride-free flame-retardant HIPS (high impact polystyrene) resin composition and a preparation method thereof. The composition comprises the following components in parts by weight: 62-75 parts of HIPS resin; 5-15 parts of polyphenyl ether resin; 10-18 parts of a brominated aromatic flame retardant; 3-8 parts of a styrene toughening agent; 1.0 to 2.0 parts of an antimony flame retardant synergist; 1-3 parts of a ceramic carbonizing agent; 1-3 parts of a polyol charring agent; 0.2 to 0.5 part of an antioxidant; 0.1-0.5 part of a light stabilizer; and 0.5 to 1.0 part of lubricant. The preparation method comprises the following steps: stirring and fully mixing the raw materials in a high-speed mixer, and carrying out material melting, shearing, homogenizing, bracing, cooling and pelletizing under the conveying, shearing and mixing of screws by a twin-screw extruder to obtain the fluoride-free flame-retardant HIPS resin composition. The invention solves the problem that the traditional flame-retardant HIPS resin needs an anti-dripping agent PTFE for synergistic flame retardance but cannot meet the PFAS prohibition. The material can be widely applied to the fields of display rear shells, chargers, electric control boxes, electric appliance shells and the like.

The invention relates to the technical field of battery pack shells, in particular to a battery pack shell and a preparation method thereof.The preparation method comprises the steps that a ceramic resin composite material and a ceramic composite material are prepared; uniformly stirring the polyphenyl ether resin, the flame retardant, the zirconium boride and the antioxidant to obtain a mixture; feeding the mixture into a double-screw extruder, and performing side feeding, extrusion and granulation on the modified carbon fibers to obtain an inner matrix material; melting the inner matrix material, injecting into a mold, cooling to room temperature, and taking out to obtain a primary product of the battery pack shell; and sequentially spraying the ceramic resin composite material and the ceramic composite material on the surface of the primary product of the battery pack shell by adopting a plasma spraying method to prepare the battery pack shell. According to the invention, the surface of the resin matrix is continuously covered with the ceramic resin connecting layer and the ceramic protective layer, so that the ablation resistance and the friction resistance of the battery pack shell are greatly improved.

A resin composition includes 100 parts by weight of a vinyl group-containing polyphenylene ether resin, 5 parts by weight to 30 parts by weight of a maleimide resin, 5 parts by weight to 40 parts by weight of an active ester and 5 parts by weight to 40 parts by weight of a phosphate ester, wherein the resin composition does not include an epoxy resin. Moreover, also provided is an article made from the resin composition, including a prepreg, a resin film, a laminate or a printed circuit board, and the various properties can be improved including dissipation factor, dissipation factor after thermal aging, dissipation factor variation rate after thermal aging, copper foil peeling strength and alkali resistance.

The invention belongs to the technical field of high polymer material synthesis and heterogeneous catalysis, and particularly discloses an amino mesoporous silica supported copper catalyst as well as a preparation method and application thereof. The catalyst is prepared by a direct co-condensation method which comprises the following steps: in the presence of a structure-directing agent, copolymerizing a silicon source and amino silane to form a mesoporous silica carrier which has a regular mesoporous structure and is modified by amino in a skeleton; then loading cuprous through a solid-state ion exchange method in an inert atmosphere, and stably endowing highly dispersed cuprous (Cu < + >) with an active center through low-temperature heat treatment; the catalyst can be used for efficiently catalyzing oxidative coupling of phenol, and is particularly suitable for synthesizing polyphenyl ether with controllable number-average molecular weight and terminal functionality, the synthesized product is high in purity and narrow in molecular weight distribution, and the catalyst is particularly suitable for high-performance copper-clad plates, semiconductor packaging and other electronic chemicals.

According to the preparation method and device of the low-molecular-weight dihydroxy-terminated polyphenyl ether, provided by the invention, the reaction is more complete through gradient polymerization reaction, the generation of reaction byproducts is greatly reduced, and the yield is higher; a segmented chelation mode is adopted, so that the residual content of the catalyst is greatly reduced, and the high applicability of the product in rear-end application is remarkably improved; by applying the special device disclosed by the invention, the reaction is more sufficient and uniform, the molecular weight distribution of the product is narrow, the quality uniformity is good, and the compatibility with downstream application is better.

To provide polyphenylene ether which is excellent in electric characteristics and heat resistance, a resin composition using the same, and a method for producing the same, and to provide a resin film, a prepreg, and a metal-clad laminate, which are formed using the polyphenylene ether resin composition.SOLUTION: Polyphenylene ether has reduction viscosity (ηsp / c) measured by a chloroform solution with a concentration of 0.5 g / dL at 30°C of 0.13-0.30 dL / g, and has the number of OH groups of 100-330 μmol / g, the number of OH groups per one molecule of 0.3-3.0 pieces / molecule, and a ratio of an integral value of a peak appearing at 7.6-8.3 ppm to an integral value of a peak derived from 1,3,5-trimetoxybenzene in a 1H-NMR measurement result measured by adding 1 mass% of 1,3,5-trimetoxybenzene thereto is 0.1 or less.SELECTED DRAWING: None

The application discloses a kind of dodecacyclo triene functionalized flame-retardant polyphenyl ether oligomer and its synthesis method, application, belong to polymer synthesis technical field, dodecacyclo triene is combined with P-H bond compound and is added by radical initiation to contain phosphorus dodecacyclo diene;Again with 2,6-dimethylphenol is added by Lewis acid catalysis to obtain phosphorus-containing dodecacyclo bisphenol;Subsequently with 2,6-dimethylphenol is catalyzed by copper complex and is oxidized and polymerized, and phosphorus-containing dodecacyclo polyphenyl ether oligomer is generated;After terminal functionalization under the basic condition of vinyl benzyl chloride, copolymerization is carried out with peroxide, and the target flame-retardant polyphenyl ether oligomer is prepared.The application introduces dodecacyclo triene bulky rigid cyclic structure in polyphenyl ether oligomer molecular chain, constructs integrated intrinsic flame-retardant system, and the combustion performance of material can be stabilized to reach V-0 grade, and excellent low dielectric, low loss performance is endowed to material.

The purpose of the present invention is to provide: a composite separation membrane which has excellent organic solvent resistance and exhibits excellent filtration performance in both an aqueous system and an organic-solvent-based system; and a method for producing said composite separation membrane. A composite separation membrane according to the present invention is: characterized by having a support film, and a polyamide layer on one surface or on each surface of the support film; and characterized in that the support film contains a modified polyphenylene oxide having a specific structural unit. A method for producing a composite separation membrane according to the present invention is characterized by including: a step for substituting, with a specific amine compound, a halogeno group of a support film that contains a polyphenylene oxide in which the 2nd and 6th positions of the benzyl are partially substituted with said halogeno group; and a step for laminating a polyamide layer on one surface or on each surface of the support film that contains a polyphenylene oxide in which the 2nd and 6th positions of the benzyl are partially substituted with a halogeno group or the specific amine compound.

The invention belongs to the technical field of polymer composite materials, and relates to a cyanate ester high-wave-transparent composite material as well as a preparation method and application thereof. After a mixture of hollow glass microspheres and silicon dioxide is coated by polyphenyl ether with hydroxyl by adopting supercritical carbon dioxide fluid, polyphenyl ether PPO with hydroxyl is foamed on the surface of an inorganic material to form a porous structure. And then compounding the pretreated filler with a cyanate ester resin system, and carrying out curing molding to obtain the composite material. The porous structure can effectively toughen a matrix, hydroxyl on the surface of the porous structure can react with cyanate ester groups, the interface bonding force and reactive compatibility of inorganic filler and the resin matrix are remarkably improved, and finally the organic-inorganic hybrid material with interpenetrating polymer chains and the porous structure is formed. According to the prepared composite material, the mechanical property, especially the toughness, is remarkably improved while the excellent wave-transparent performance is kept, and the composite material is suitable for wave-transparent parts such as high-performance radomes and antenna windows.

To provide a modified polyphenylene ether resin that can be applied to electronic components or electronic products (e.g., circuit boards or copper clad laminates), and a preparation method therefor.SOLUTION: A modified polyphenylene ether resin has a structure represented by Formula 1, where R1-R8 are each selected from a hydrogen group or a C1-C6 alkyl group, P1-P4 are each selected from a single bond or a ketone group, Q1-Q4 are each selected from a benzene ring group, a styryl group, a phenylethynyl group, an ethynyl group, a vinyl group, a methyl vinyl group, a naphthalene ring group, or hydrogen, and X is a linking group selected from a single bond or the following chemical formula.SELECTED DRAWING: Figure 1

An electrode structure is arranged over a core metal of a steering wheel, and includes: a first resin layer; and a first electrode arranged on one surface of the first resin layer. The first resin layer is essentially made of a sheet or film of modified polyphenylene ether or modified polyphenylene oxide.

One aspect of the present invention relates to a resin composition containing a thermosetting compound (A) and an inorganic filler (B), the thermosetting compound (A) contains at least one radical polymerizable compound (A1) selected from the group consisting of a polyphenylene ether compound having a reactive unsaturated group, a hydrocarbon compound having a reactive unsaturated group, and a maleimide compound having two or more maleimide groups. The inorganic filler (B) contains a boron nitride filler (B1), and a polydopamine (C) having a functional group (X) that reacts with the radically polymerizable compound (A1) adheres to the surface of the boron nitride filler (B1).

This is a halomethylated polyphenylene ether containing a specific amount of repeating units represented by structural formulas (I), (II), and (III) (wherein X is chlorine or bromine). This halomethylated polyphenylene ether is considered particularly suitable for subsequent quaternization. The use of the described material in applications such as ion exchange membranes is also discussed. JPEG2026520833000067.jpg27170(I) JPEG2026520833000068.jpg34170(II) JPEG2026520833000069.jpg26170(III)

The disclosure provides an active cationic polymerization initiator composition for synthesizing a ternary diblock copolymer, a diisopropenylbenzene copolymer and a terpene polymer. The disclosure further provides a flame-retardant resin composition, which includes: (a) a hydrocarbon resin; and (b) a reactive flame-retardant, and may optionally include a modified polyphenylene ether. A flame-retardant resin cured product formed from the flame-retardant resin composition may have high heat resistance, low dielectric constant, low dissipation factor, flame retardancy and / or film-forming properties, and is suitable for uses in fabrication of a semiconductor packaging material, a substrate and the like for the high-speed and high-frequency field.