49results about How to "Excellent extrusion formability" patented technology

The laminate of the invention comprises a sliding member of a resin composition and a Substrate layer of a thermoplastic olefin elastomer (A), and is obtained by co-extruding: the resin composition which is obtained by melt kneading a thermoplastic olefin elastomer (A), an ultra-high-molecular weight polyolefin (except a powder thereof having a particle diameter of 1 to 100 mum) having an intrinsic viscosity, as measured in a decalin solvent at 135° C., of 1 to 40 dl/g, an inorganic or organic filler powder, and optionally, a polyolefin resin, an organopolysiloxane, a fatty acid amide and a fluororubber in a twin-screw extruder, and the thermoplastic olefin elastomer (A). The laminate has excellent sliding properties with window glass and excellent abrasion resistance. Moreover, the laminate can be produced by a simple process because it requires no adhesive, and the laminate has great bonding strength between the substrate layer and the sliding member layer.

Disclosed is a member of nylon 12 having a relative viscosity of from 1.9 to 3.5 when measured in 98% sulfuric acid at a concentration of 10 g/dm.sup.3 and at 25.degree. C. and a melt flow rate of 0.1 g/10 min. or more when measured at 235.degree. C. under a load of 2,160 g, wherein said relative viscosity and said melt flow rate have a relationship of the following formula (I): wherein .eta..sub.r is relative viscosity and MFR is melt flow rate. The nylon 12 has excellent extrusion moldability and creep characteristics, fatigue characteristics and the like mechanical properties and is suited for tubular molds. A nylon 12 composition comprising the nylon 12 having the above-described specific relationship between .eta..sub.r and MFR and a plasticizer is also disclosed.

The invention discloses a thermoplastic elastomer refrigerator door sealing strip material and a preparation method. The thermoplastic elastomer refrigerator door sealing strip material is prepared from the following materials of SEPS (hydrogenated styrene-isoprene) and/or SBS (styrene-butadiene-styrene), LLDPE (linear low density polyethylene), regular polypropylene, filling oil, mineral filler,a lubricant, a coupling agent and an antioxidant. The preparation method of the thermoplastic elastomer refrigerator door sealing strip comprises the following steps of weighing, uniformly mixing, granulating, extruding and forming. The thermoplastic elastomer refrigerator door sealing strip has the advantages that the problem in the refrigerator door sealing strip material using PVC (polyvinyl chloride), TPV (thermoplastic vulcanizate) and the like as the substrates on market is solved; the cold-resistant property is good, the elasticity is good, the deformation recovery ability is strong, the sealing effect is good, the non-toxic and environment-friendly effects are realized, and the recycling effect is realized; the hardness range is broad, the anti-crease effect is good, the dry and fresh effects are realized, the hand feel is comfortable, and any foreign odor is avoided.

A honeycomb nest hydrogenation protecting agent is prepared from 1-60% of alumina powder, 5-50% of kaolin, 0.1-15% of talcum powder, 5-60% of clay, 0.5-10% of an alkaline solvent, and 0.1-5% of an auxiliary material. The unit cross section area of the above product has more and denser through holes, so the external specific surface area of the product is greatly increased and reaches above 5000m<2>/m<3>, so a reaction raw material and the protecting agent have a larger contact and reaction area. The void fraction of the product reaches 30-70%, the water absorption rate reaches 10-50%, and the appropriate water absorption rate makes the protecting agent adsorb more active substances, so the absorption rate of adsorbed impurities is improved, and the catalysis effect is improved; and the radial crushing strength of the product is 50-500N/granule of the product, the product cannot be fragmented when 50-500N is applied to the two axial ends of the product, and maintains integrity, so the strength is improved, and the service life is prolonged.

The invention discloses automatic dough kneading equipment. The equipment comprises a circular base; the upper surface of the circular base is fixedly connected with a circular uncovered dough kneading case; an automatic dough kneading mechanism is disposed in the circular uncovered dough kneading case; the upper surface of the circular base is fixedly connected with a group of tensile round rods which are oppositely disposed outside the circular uncovered dough kneading case; an automatic mixing mechanism is disposed between the group of tensile round rods; and the lateral surface of the circular uncovered dough kneading case is equipped with lifting mechanisms. The beneficial effects of the invention are that the equipment is a device relatively convenient to operate, and flour and water are uniformly stirred, and direct hand contact is avoided, and automatic extrusion molding of dough is carried out with a good effect, and labor intensity is alleviated, and the equipment is suitable for large-scale usage.

The invention discloses a wire, a cable, and a composition which feature excellent wearing resistance performance, low friction, and good mechanical strength. The wire and cable are formed by wrapping the composition to the periphery of the conductors or wire core, wherein the composition is formed by dispersing the reinforced type filler within the scope of above 10 parts by mass and below 100 parts by mass relative to the elastomer of 100 parts by mass and further dispersing the fatty acid amide within the scope of above 3 parts by mass and below 200 parts by mass.

A subject of the invention is to provide a polyvinyl chloride resin composition of excellent extrusion moldability, mechanical properties and cold resistance and an insulated wire using the polyvinyl chloride resin composition. The method to solve the problem of the invention relates to a polyvinyl chloride resin composition which comprises polyvinyl chloride resin (A), a plasticizer (B) and a non-lead stabilizer (C), and does not contain polymethyl methacrylate acting as a gelling agent. The non-lead stabilizer (C) comprises a zinc-containing metallic soap (c1) and hydrotalcite (c2). With respect to 100 mass% of the polyvinyl chloride resin composition, the following plasticizer (B) accounts for 19 mass% to 24 mass%, the non-lead stabilizer (C) accounts for 4 mass% or more, and a mass ratio (c2/c1) of the hydrotalcite (c2) to the zinc-containing metallic soap (c1) is above 3.5 and below 10.

The invention relates to the field of novel plastic materials, in particular to a basalt reinforced LCP (liquid crystal polymer) composite material and a preparation method thereof. The basalt reinforced LCP composite material comprises the following component in parts by weight: 40-80 parts of LCP, 12-30 parts of basalt fiber, 0.3-0.9 part of a heat-resistant agent, 3-9 parts of a coupling agent, 3-6 parts of a main antioxidant, 1-3 parts of an auxiliary antioxidant, 1-5 parts of a compatilizer, 0.5-2 parts of a lubricant, 2-6 parts of a flame retardant, and 1-3 parts of a flame retardant synergist, wherein the heat-resistant agent is N,N'-4,4'-diphenylmethane dimalephthalamide. The basalt reinforced LCP composite material provided by the invention is high in mechanical strength, good in heat resistance and wide in application range.

Provided is a method for producing an oxymethylene copolymer having excellent extrusion moldability and reduced voids in a molded article without lowering the inherent performance of an oxymethylene copolymer. Provided is a method for producing an oxymethylene copolymer, including: a step for copolymerizing a monomer raw material containing trioxane and 5-7 mass % of 1,3-dioxolane relative to the trioxane, in the presence of 0.025-0.07 mmol of boron trifluoride per mol of trioxane and 0.006-2.0 mass % of sterically hindered phenol relative to the trioxane; a step for adding a polymerization terminator to the reaction system when the polymerization yield of this copolymer has reached 92% or higher, and terminating polymerization; and a thermal stabilization step for heating and melting the crude oxymethylene copolymer in the presence of 0.05-5 mass % of an antioxidant and 0.005-5 mass % of a nitrogen-containing compound relative to the crude oxymethylene copolymer.

A resin composition for producing an insulating material includes (A) 40 to 50% by weight of a base resin formed with a polyolefin-based resin or a derivative thereof, (B) 40 to 50% by weight of a magnesium hydroxide flame retardant of which surface is treated with vinyl silane, (C) 1 to 2% by weight of an antioxidant in which a first antioxidant and a second antioxidant are mixed in a weight ratio of 1:1 to 3, (D) 0.5 to 2% by weight of a lubricant, (E) 2 to 3% by weight of organosilane, (F) 0.05 to 0.2% by weight of an initiator, and (G) 1 to 4% by weight of a catalyst.

Belonging to the technical field of high polymer materials, the invention relates to an ABS/PC (acrylonitrile-butadiene-styrene/polycarbonate) material and a preparation method thereof. The ABS/PC material comprises the following components by weight: 100 parts of ABS resin, 10-50 parts of PC resin, 15-80 parts of glass fiber, 5-20 parts of a compatibilizer, 0.2-1.5 parts of an anti-glass fiber exposure agent, and 0.3-1.0 part of an antioxidant. The ABS/PC material provided by the invention has excellent extrusion molding performance, the weather resistance, oil resistance, solvent resistance and physical and mechanical properties are obviously superior to those of unmodified ABS materials, and the extruded products have the characteristics of smooth surface, no floating fiber, and excellent performance, thus being widely applicable in pipelines, building profiles, sheet materials and every field of social life and having great economic and social value.

The invention discloses a polyfluortetraethylene water-based emulsion, polyfluortetraethylene fine powder and a preparation method. The method comprises the following steps that polyfluortetraethyleneis singly subjected to emulsion polymerization in a water-based medium or is subjected to emulsion polymerization in the water-based medium together with other copolymerizable monomers to obtain thepolyfluortetraethylene water-based emulsion, wherein the emulsion polymerization process is performed under the existence condition of fluorine-containing emulsifying agents and stabilizing agents. The invention relates to the polyfluortetraethylene water-based emulsion, the polyfluortetraethylene fine powder and the preparation method. Environment problem caused by perfluoro caprylic acid or perfluoro caprylic acid salt does not exist. The water-based emulsion comprises polytetrafluoroethylene with high molecular weight; the average primary particle diameter reaches 0.18 to 0.50mu m. Variouscharacteristics such as extrusion shaping performance of the polyfluortetraethylene fine powder are excellent; the mechanical property is good; the polyfluortetraethylene fine powder can be used for preparing polyfluortetraethylene porous bodies; the obtained polyfluortetraethylene porous bodies have various excellent characteristics.

A polyamide elastomer comprising a reaction product of components (a), (b), and (c). Component (a) has the formula HOOC—R₁—(-NH—CO—R₁-)_n—NH₂ (where each R₁ independently is linear saturated hydrocarbon, n represents a real number of 0 or greater, and when the formula contains multiple repeating units each containing R₁, n represents a total number of those repeating units) and the M_n of component (a)=4000-10000. Component (b) has the formula HOOC—R₂—COOH (where R₂ represents a direct bond or a linear saturated hydrocarbon group). Component (c) has the formula H₂N—R₄—(-O—R₄-)_m—NH2 (where each R₄ independently represents a saturated hydrocarbon group containing 1 or more carbon atoms; m represents a real number of 1 or more; and when the formula contains two or more types of the repeating units each containing R₄, m represents a total number of the two or more types of the repeating units each containing R₄).

The invention belongs to the technical field of polymer materials, and relates to an ABS / PA6 material and a preparation method thereof. The ABS / PA6 material comprises the following components by weight: 100 portions of an ABS resin, 10-50 portions of PA6 resin, 20-80 portions of glass fiber, 5-15 portions of a compatible agent, 0.3-1.8 portions of a chain extension agent, 0.2-1.5 portions of a lubricant and 0.3-1.0 portion of an antioxidant. The ABS / PA6 material provided by the invention has excellent extrusion resistance, and weather resistance, oil resistance, solvent resistance and mechanical properties obviously superior to those of an unmodified ABS material, and extrusion products also have excellent performance. The ABS / PA6 material can be widely used in various areas of social life, such as pipelines, architectural section and sheet, and has great economic and social values.

Provided is a silicone rubber composition that exhibits improved moldability, particularly extrusion moldability, while also ensuring that a cured product obtained therefrom has sufficient strength. Asilicone rubber composition comprising: (A) 100 parts by mass of a base polymer formed from (A1) a polyorganosiloxane diol having a viscosity at 25 DEG C of 1 to 100 Pa*s, and (A2) a polyorganosiloxane having a viscosity at 25 DEG C of 0.2 to 40,000 Pa*s, wherein the proportion of (A1) with respect to the total amount of (A) is 20 to 100 mass%, the viscosity at 25 DEG C is 5 to 20,000 Pa*s, and the alkenyl group content is 0.001 to 0.3 mmol/g; (B) 10 to 50 parts by mass of a silica powder having a specific surface area of 50 to 400 m2/g; (C) 1 to 10 parts by mass of an organosilazane; and (D)a catalytic amount of a curing agent.