208results about How to "Improve heat deflection temperature" patented technology

A composition comprises, based on the total weight of the composition, from 10 to 80 wt. % of a polyester; from 10 to 80 wt. % of a polycarbonate; from 0 to 20 wt. % of an impact modifier; from 1 to less than 25 wt. % of a reinforcing filler; from 0.1 to less than 2.5 wt. % of a fibrillated fluoropolymer; from 0 to 5 wt. % of an additive selected from the group consisting of antioxidants, mold release agents, colorants, quenchers, stabilizers, and combinations thereof, wherein the composition has a heat deflection temperature of at least 110° C., measured in accordance with to ASTM D648 on 3.2 mm thick molded bars at 0.455 MPa.

A composition comprises, based on the total weight of the composition: from 10 to 80 wt. % of a modified polybutylene terephthalate copolymer that (1) is derived from polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers and (2) has at least one residue derived from the polyethylene terephthalate component; from 10 to 80 wt. % of a polycarbonate; from 0 to 20 wt. % of an impact modifier; from 1 to less than 25 wt. % of a reinforcing filler; from 0.1 to less than 2.5 wt. % of a fibrillated fluoropolymer; from 0 to 5 wt. % of an additive selected from the group consisting of antioxidants, mold release agents, colorants, quenchers, stabilizers, and combinations thereof. The composition has a heat deflection temperature of at least 110° C., measured in accordance with to ASTM D648 on 3.2 mm thick molded bars at 0.455 MPa.

The invention discloses a high temperature resistant PVC profile outer cover used in a base station antenna and a preparation method thereof, which can not only improve the mechanical property, but also greatly improve high and low temperature resistant ageing property and ultraviolet ray resistant property, and greatly improve the electrical property of the material simultaneously, and what's more, the resisted high temperature can reach 90 DEG C. The outer cover of the invention is manufactured by the following raw materials according to the mass ratio: 100 parts of PVC, 30-100 parts of heat resistant modified resin, 4-10 parts of inorganic modified padding, 0-10 parts of calcium carbonate, 1-2 parts of organic stannum stabilizing agent; 1-2 parts of metal soap stabilizing agent, 0.5-1.5 parts of lubricating agent, 4-12 parts of impact modifier, 1-3 parts of acrylic ester processing agent and 0-0.6 part of light stabilizer, wherein, the heat resistant modified resin is one or two or the emulsion blend of ABS resin and alpha-methyl styrene-acrylonitrile copolymer; the inorganic padding is one of titanium dioxide and mica or the mixture of the two.

The invention discloses a PLA (polylactic acid) resin-ABS (acrylonitrile-butadiene-styrene) resin composite material and a method for preparing the same. The PLA resin-ABS resin composite material is prepared form the following components by weight percent: 60-80% of PLA resin and copolymer thereof, 10-30% of ABS resin, 3-5% of compatibilizer, 5-10% of toughening agent, 0.5-2% of talcum powder and 0.5-1.5% of coupling agent. The components in proper content range interact mutually during extrusion, thus the PLA resin and ABS resin composite material has advantages of excellent impact strength, heat distortion temperature and biodegradable properties. The method for preparing the PLA resin and ABS resin composite material adopts the simple one-step mixing reaction-extrusion-granulation process, is convenient to operate, has high benefit and low cost and is suitable for industrial production.

The invention discloses a low-smell high-gloss free-spraying polyamide composition which comprises, by weight, 30-100 parts of polyamide, 0.1-6 parts of effect pigments, 0-50 parts of mineral fillers,0-20 parts of flexibilizers, 0-5 parts of auxiliaries, 0-1 part of heat stabilizers and 0-1 part of antioxidants. Monomers and low-polymer components remaining in the production process of polyamideare eliminated by reaction in the preparation process, and the smell of a low-smell nylon composition is improved. Besides, surface defects of free-spraying workpieces are decreased, brightness is improved, the free-spraying workpieces are closer to appearance effects of painted parts, the smell of the nylon composition is further removed by a smell removal process, and glossiness and tensile strength are further improved by introducing the mineral fillers and the flexibilizers.

The invention discloses a method for directly preparing glycols from biological cellulosan, comprising the following steps: using cellulose cellulose as a raw material and a polar solvent as a reaction solvent, adding a catalyst in the raw material solution, and reacting for 0.5-72 h at a temperature of 150-300 DEG C under the condition of hydrogenation to obtain a mixture of glycols and sugar alcohol, wherein, the catalyst is a supported nickel-based catalyst, copper-based catalyst, nickel-copper, copper-zinc, nickel-copper-zinc dual metal of poly metal catalyst. According to the invention, various glycols can be obtained simultaneously; the product can be used individually by separation, and can be directly used for producing unsaturated polyester resin, polyurethane, fuel additive, surfactant, emulsifier, motor vehicle antifreeze fluid and the like without deep separation.

The invention discloses a modified polypropylene composite material which includes, by weight, 35-90 parts of polypropylene resin, 8-35 parts of basalt fibers, 0.1-5 parts of a scratch resistant agent, 0.5-5 parts of a coupling agent, and 0.2-5 parts of a compatibilizer. The basalt fibers are selected from at least one of non-twist continuous basalt fibers and short-cut basalt fibers. The non-twist continuous basalt fibers are 1200-2400 tex non-twist continuous basalt fibers and the short-cut basalt fibers are 0.2-10 mm short-cut basalt fibers; preferably, the basalt fibers are pre-treated inacetic acid being 1.0-3.0 mol/L for 1-3 h. The modified polypropylene composite material has low cost, high thermal deformation temperature, good tensile strength, high bending modulus and excellent damp-heat-resistance, anti-aging property and scratch resistance, and can satisfy demands on vehicle-use modified polypropylene composite materials.

The invention relates to a high-gloss, high-hardness and spraying-free ABS (acrylonitrile butadiene styrene) plastic modified material and a preparation method thereof. The high-gloss, high-hardness and spraying-free ABS plastic modified material comprises the following raw materials in parts by weight: 55-64 parts of ABS resin, 15-20 parts of AS (acrylonitrile styrene) resin, 15-25 parts of PMMA (polymethyl methacrylate) resin, 0.2-0.5 part of plasticizer, 0.2-0.5 part of lubricant, 1-2 parts of high color black, 0.2-0.4 part of antioxidant and 0.1-0.2 part of methyl silicone oil. The high-gloss, high-hardness and spraying-free ABS plastic modified material disclosed by the invention has very high hardness, the surface hardness can be above the H level, and the high-gloss, high-hardness and spraying-free ABS plastic modified material further has strong anti-scratch performance during the using process and is less prone to being scratched; the high-gloss, high-hardness and spraying-free ABS plastic modified material has very high gloss, high black and bright degree, stable quality, good using effects and good tensile strength, anti-impact strength and other performances, and housings of televisions, refrigerators and washing machines applying the high-gloss, high-hardness and spraying-free ABS plastic modified material have stronger anti-impact performance and long service life; and the preparation method disclosed by the invention has the advantages of simplicity in operation, few required equipment and low production cost.

The invention relates to a polyphenylene sulfide composite material and a preparation method thereof. The polyphenylene sulfide composite material is prepared from the following raw materials in parts by weight: 60-80 parts of polyphenylene sulfide, 20-40 parts of polyamide, 5-10 parts of a compatilizer, 0.5-1 part of an antioxidant, 10-20 parts of a conductivity improver, 20-40 parts of filler, 0.5-1 part of a coupling agent and 0.4-0.8 part of a lubricant, wherein the compatilizer is a styrene-vinyl-butadiene-styrene segmented copolymer grafted maleic anhydride. The polyphenylene sulfide composite material has relatively good rigidity, heat resistance and anti-static performance.

The invention relates to a coupling agent modified silicon dioxide doped cycloaliphatic epoxy resin LED packaging adhesive. The adhesive is characterized in that: it is composed of component A and component B that are mixed in a ratio of 1: (0.9-1) for construction. Specifically, the component A consists of cycloaliphatic epoxy resin, an active diluent, a transparent blue-violet purple dye color paste, a defoaming agent and a softening agent. The component B consists of a curing agent, an accelerator, a silane coupling agent modified nano-ultraviolet absorbent, polyol and an antioxidant. The nano-silicon dioxide doped cycloaliphatic epoxy resin LED packaging adhesive provided in the invention has the advantages of good ageing resistance, strong binding power, fast curing, low viscosity and moisture absorption, so that employment of organosilicone with a high cost can be avoided. Meanwhile, the defects of high moisture absorption, poor ultraviolet resistance and low shortwave transmittance and the like of existing bisphenol A type epoxy resin can be overcome. The LED packaging adhesive provided in the invention is more suitable to be used as a high-end LED packaging adhesive, a high power LED packaging adhesive or an ultraviolet light-based white light and blue light LED packaging adhesive.

The invention relates to a halogen-free inflaming retarding high-performance polycarbonate engineering plastic and a preparation method thereof. Counted in weight percentage, the components of the engineering plastic include as follows: 78 to 92 percent of PC resin, 5 to 10 percent of sulfur-bearing super engineering plastics, 0.1 to 3 percent of flame retardant containing silicon, 0.1 to 1 percent of anti-dropping agent, 1 to 5 percent of compatilizers and 0.1 to 1 percent of chemical inhibitors; wherein, the sulfur-bearing engineering resin is polyethersulfone or the composition of the polyethersulfone and polyphenyl thioether; the flame retardant containing silicon is acrylic ester graft modification polysiloxane or the composition of the acrylic ester graft modification polysiloxane and poly methyl phenyl siloxane. The preparation method includes as follows: the materials of the prescription are fully mixed in a high speed mixer; then is fed into a co-rotating meshed double-screw extruder to melt, blend and extrude. In the invention, the sulfur-bearing super engineering plastics and the flame retardant containing silicon are matched and used, thus endowing the polycarbonate with excellent flame retardation and higher heat resistance as well as excellent compatibility, improving the mechanical property of the composite material and overcoming the defects of being easily separated out and absorbing moisture of a micromolecule flame retardant containing silicon.

The invention discloses a heat-resistant and flame-retardant nylon tube. The heat-resistant and flame-retardant nylon tube is prepared from nylon 66, nylon 6, polymethylhydrosiloxane, epoxy resin, titanate coupling agent modification nano-zinc oxide, modification needle-like wollastonite, an amination carbon nano-tube, nano-silicon dioxide, red phosphorus, melamine cyanurate, organic nano-montmorillonite, glass fibers, magnesium borate whiskers, basic zinc carbonate nanofibers, ethylene-propylene-diene monomer, ethylene-bis-stearamide, calcium pimelate, zinc pimelate, silane coupling agent, aluminum diethylphosphinate and lanthanum stearate. The heat-resistant and flame-retardant nylon tube is good in heat resistance and flame retardancy, high in strength and excellent in impact resistance, and a nylon tube formed by the heat-resistant and flame-retardant nylon tube is good in overall performance and long in service life.

The invention relates to a glass fiber-reinforced flame-retardant polystyrene resin composition, which comprises the following components in weight part: 50-70 parts of polystyrene resin, 11-13 parts of halogenated flame retardant, 3-4 parts of antimonic flame retardant, 6-20 parts of glass fibers, 3-7 parts of flexibilizer, 3-5 parts of compatilizer, 0.2-0.4 part of anti-oxidant, 0.5-1.5 parts of lubricant, and 0.1-0.2 part of anti-dripping agent. According to the technical scheme of the invention, the impact strength of the resin composition is greatly improved. Meanwhile, the defect that the existing glass fiber-reinforced flame-retardant polystyrene resin is poor in impact strength can be overcome. The application range of glass fiber reinforced flame-retardant polystyrene is expanded. The glass fiber-reinforced flame-retardant polystyrene resin provided by the invention is high in impact strength, high in rigidity, high in flame-retardant efficiency, good in flowability, and the like. Meanwhile, the glass fiber-reinforced flame-retardant polystyrene resin has a wide application prospect to meet the market requirements of light weight and thin wall upside to the current trend.

The invention relates to a halogen-free flame retardant HIPS (High Impact Polystyrene) plastic modified material and a preparation method thereof. The halogen-free flame retardant HIPS plastic modified material comprises the following materials in parts by weight: 40-45 parts of HIPS, 35-40 parts of MPPO (Modified Polyphenylene Oxide), 5-7 parts of halogen-free flame retardant, 3-5 parts of red phosphorus powder, 3-5 parts of K resin, 3-5 parts of SBS (Styrene Butadiene Styrene), 0.3-0.5 part of lubricating agent, 0.2-0.5 part of white mineral oil and 0.5-2 parts of carbon black powder. The halogen-free flame retardant HIPS plastic modified material not only has good flame retardation and strong safety, but also has good mechanical performances including tensile strength and the like; a television enclosure, which is manufactured by the halogen-free flame retardant HIPS plastic modified material, has stronger impact resistance and a long service life, and can be recycled. The processing materials MPPO and HIPS are mainly reclaimed materials, so that the cost of the modified HIPS plastic material is greatly lowered. The halogen-free flame retardant HIPS plastic modified material is free of halogen, environment-friendly and capable of generating great environment-friendly benefits. Besides, the preparation method of the halogen-free flame retardant HIPS plastic modified material is simple to operate, less in needed equipment and low in production cost.

The invention discloses a polydicyclopentadiene/polystyrene interpenetrating polymer network and a preparation method thereof. A compound material is formed through simultaneous polymerization of polymeric monomers in part by weight: 60 to 99 part of dicyclopentadiene, 1 to 40 parts of styrene or benzene ring substitution styrene and 0.01 to 10 parts of divinylbenzene, wherein a substitution group in the benzene ring substitution styrene is an alkyl substitution group with halogen or carbon number ranging from 1 to 6; dicyclopentadiene is polymerized by a ring-opening translocation catalytic body; and styrene and divinylbenzene are polymerized by a free radical. Heat generated by ring-opening polymerization of polydicyclopentadiene causes the polymerization of styrene to form an interpenetrating polymer network type compound material taking polydicyclopentadiene as a first network and polystyrene as a second network, as compared with the single polydicyclopentadiene material, the tensile strength is improved by 3 to 15%, the heat distortion temperature is increased by 5 to 13 DEG C, the polymerization conversion rate of the polydicyclopentadiene is increased from 97.2% to 99.5%, and the styrene adopting halogen can enhance the flame retardance of the material.