32results about How to "Reduce floating fiber" patented technology

The invention relates to the technical field of polypropylene materials, and specifically relates to a long glass fiber enhanced polypropylene composite material and a preparation method thereof. Thelong glass fiber enhanced polypropylene composite material comprises a component A and a component B. The component A is prepared from following components in parts by weight: 30 to 90 parts of polypropylene resin, 10 to 60 parts of alkali-free continuous glass fibers, 0.5 to 2.0 parts of a lubricant, 0.01 to 0.1 part of peroxides, 0.5 to 3.0 parts of a silane coupling agent, and 0.2 to 0.7 part of an antioxidant. The component B is prepared from following components in parts by weight: 30 to 90 parts of polypropylene resin, 10 to 60 parts of alkali-free continuous glass fibers, 0.5 to 2.0 parts of a lubricant, 1.0 to 4.0 parts of a catalyst, 0.01 to 0.1 part of peroxides, and 0.2 to 0.7 part of an antioxidant. Peroxides decompose and functionalize polypropylene; during the infiltration process, polypropylene has high fluidity and excellent infiltration effect; after the material is moulded, the mechanical strength of the material is improved, and moreover, the prepared material has few fibers on the surface, is easy to mould, and has a high performance.

The invention relates to a high-strength, high-weather-resistance and good-appearance PA6 composition and a preparation method thereof. The high-strength, high-weather-resistance and good-appearance PA6 composition comprises the following components in parts by weight: 25-45 parts of PA6 resin; 5 -10 parts of amorphous nylon and 20 to 50 parts of glass fiber; 10-40 parts of mineral powder; 0.3-0.8part of carbon black; 0.3-0.8 part of a fluidity improver; 0.3-0.8 part of an antioxidant; 0.3-0.8 part of a lubricant; 0.5-1 part of weather-resistant agent. The PA6 composition disclosed by the invention has good comprehensive performance, and can be used for preparing a high-performance composite material to replace a traditional metal material to be used in automobile functional parts and structural parts.

The invention discloses a modified polypropylene material, a preparation method and application thereof. The modified polypropylene material comprises the following components in parts by weight: a, 20-80 parts of a polypropylene resin, b, 1-20 parts of a compatilizer, and c, 10-40 parts of reinforcing fibers, wherein the reinforcing fibers comprise a component I, a component II and a component III, the component I consists of reinforced fibers with the length of less than 0.1 mm and accounts for 10-20% of the reinforing fibers, the component II is composed of reinforced fibers with the length of 0.1 mm-0. 3mm and accounts for 50-75% of the number of the reinforcing fibers, and the component III is composed of reinforced fibers with the length of 0.4 mm-0. 8mm, and accounts for 5-40% of the number of the reinforcing fibers. According to the invention, by controlling the length and content distribution of the reinforcing fibers in the modified polypropylene material, compared with a glass fiber material with a conventional length (0.4-0.6 mm), the surface gloss is high, and floating fibers are few; elongation at break is large, toughness is good, and tests such as ball falling are facilitated; and the melt elongation rate is high, and the modified polypropylene material is mainly suitable for blow molding, plastic suction and other occasions.

The invention discloses a high-rigidity glass fiber reinforced polypropylene material and preparation equipment and a preparation method thereof. The high-rigidity glass fiber reinforced polypropylenematerial consists of the following raw materials: homo-polypropylene, a compatilizer, an antioxidant, a lubricating agent, a nucleating agent and glass fibers. Meanwhile, the invention discloses theequipment for preparing the polypropylene material and a method for preparing the high-rigidity glass fiber reinforced polypropylene material by using the equipment. In addition, the invention furtherdiscloses application of the high-rigidity glass fiber reinforced polypropylene material. The polypropylene material has high bending strength and modulus, is excellent in anti-impact property and good in thermal stability, resists hydrolysis, and can be widely applied to automotive panels, washing machine drums, handles of thermal jugs and the like.

The invention discloses a flame-retardant reinforced PBT (polybutylene terephthalate) composite and a preparation method thereof. The flame-retardant reinforced PBT composite comprises PBT resin, PET(polyethylene glycol terephthalate) resin, brominated epoxy resin, an antimony compound, glass fiber, glass beads, a dendritic hyperbranched polymer, a toughening agent, an anti-aging agent, a lubricant, a nucleating agent and color masterbatch. The preparation method includes: 1) pre-drying of the PBT resin and the PET resin; 2) pre-mixing of the PBT resin, the PET resin, the brominated epoxy resin, the antimony compound, the dendritic hyperbranched polymer, the toughening agent, the anti-aging agent, the lubricant, the nucleating agent and the color masterbatch; 3) extrusion granulation performed by adding the glass fiber and the glass beads. The flame-retardant reinforced PBT composite has the advantages of high gloss, good dimensional stability, low warpage, good weather resistance andthe like; the preparation process is simple, the production cost is low, and the flame-retardant reinforced PBT composite is suitable for pressure gauge housing materials.

The invention provides a reinforced polypropylene composite material capable of replacing ABS as well as a preparation method and application of the reinforced polypropylene composite material. The material is prepared from the following raw materials in parts by weight: 60 to 81 parts of polypropylene, 5 to 10 parts of glass fibers, 2 to 5 parts of PP-g-MAH and 2 to 5 parts of silicone powder; talcum powder is a mixture formed by mixing talcum powder A with talcum powder B according to the mass ratio ranging from 1:2 to 2:1; D50 of the talcum powder A is 1 to 2 microns and D50 of the talcum powder B is 10 to 15 microns. According to the preparation method disclosed by the invention, by adding glass fiber powder and the talcum powder with different particle sizes into the polypropylene, the strength and the toughness of a final material are close to those of an ABS material; in addition, by adding a special silicone powder additive, the surface of a product subjected to injection molding has no floating fibers and the reinforced polypropylene composite material can replace the ABS material.

The invention discloses a reinforced polypropylene material, a preparation method and application thereof. The reinforced polypropylene material comprises the following components in parts by weight: 30-70 parts of straight-chain polypropylene, 2-50 parts of long branched chain polypropylene, 1-20 parts of a compatilizer, 5-60 parts of reinforcing fibers, 0.1-20 part of a fluorine compound. According to the invention, the polypropylene material prepared by the method is high in surface gloss, good in toughness and high in melt strength, and is mainly suitable for blow molding, plastic uptake and other occasions.

The present invention discloses a flame-retardant glass fiber reinforced polyketone composite material capable of being used for a vehicle fuel oil system, wherein 100 parts by weight of polyketone is added with 60-150 parts by weight of glass fibers having a flat cross-section shape, 5-30 parts by weight of a phosphorus-based flame retardant agent, and 0-5 parts by weight of other auxiliary agents. According to the present invention, the polyketone composite material has advantages of high strength and high rigidity, and can be used in engine covers, fuel oil tanks, fuel oil pipes and other products having high requirements on chemical resistance, hydrolysis resistance, fuel oil resistance and rigidity, wherein the product is easy to mold through the fluidity of the composition, and the floating fiber can be reduced.

The invention provides an ultrahigh-strength, low-warpage and low-floating-fiber PA (polyamide) reinforced material. The ultrahigh-strength, low-warpage and low-floating-fiber PA reinforced material is prepared from 20-40 parts of PA6, 55-80 parts of glass fibers, 2-8 parts of mineral powder, 2-8 parts of a functional compatilizer, 0.2-0.6 part of a lubricant and 0.2-1.5 parts of an antioxidant, the functional compatilizer is a maleic anhydride grafted ethylene-octylene copolymer, a maleic anhydride grafted ethylene-propylene copolymer or a maleic anhydride grafted ethylene propylene diene monomer; the PA6 comprises PA6 with a high melt index and PA6 with a low melt index, the melt indexes of the PA6 with the high melt index are 70-100 g / 10 min and 30-50 g / 10 min respectively, the proportion of the PA6 with the high melt index is 40-50%, and the proportion of the PA6 with the low melt index is 40-60%. According to the invention, the ultrahigh glass fiber content (greater than 60%) provides excellent performances such as higher mechanical strength, heat resistance, dimensional stability and the like for the PA reinforced material, and also overcomes the defects of high warping, high floating fiber, low gloss and the like caused by high-content fibers.

The invention discloses a high-toughness low-floating-fiber ABS resin composition. The ABS resin composition is characterized by comprising the following components: an acrylonitrile-butadiene-styrene copolymer, poly(butylene adipate-co-terephthalate), glass fibers, a compatilizer, a coupling agent, a lubricant and a processing aid, wherein the intrinsic viscosity of poly(butylene adipate-co-terephthalate) resin is 2.0 to 2.8 dl / g. According to the invention, a specific type of PBAT is added into an ABS resin matrix and cooperates with the compatilizer, the lubricant and the coupling agent, so the ABS resin composition with high toughness and low floating fiber content is obtained under the condition that the ABS resin composition contains the glass fibers. Under the condition that 30 wt% of the glass fibers is added, no obvious floating fiber exists on the surface of the ABS resin composition, and notch impact strength can reach 15KJ / m<2>.

The invention relates to a glass fiber reinforced polybutylene terephthalate composition with a low floating fiber effect. A PBT resin is used as a base material, PET resin is used as an auxiliary base material, flat glass fiber is used as a reinforcing unit and sodium lignite is used as a floating fiber improving synergist, the low-melting-point PBT resin, the flat glass fiber and the sodium lignite have an excellent low-floating-fiber synergistic effect, and a prepared product is high in strength, high in surface gloss, less in floating fiber and good in mechanical property. Therefore, the use requirements of most appearance workpieces can be met.

The invention provides a spraying-free polybutylene terephthalate fiber-added composite material and a preparation method thereof. The spraying-free polycarbonate fiber-added composite material is prepared from the following raw materials in percentage by weight: 59-85 percent of polybutylene terephthalate, 10-30 percent of glass fiber, 0.2-1 percent of hyperbranched polyester copolymer, 3-8 percent of toughening agent, 0.1-0.5 percent of antioxidant, 0.5-1.5 percent of lubricating agent and 0.1-0.5 percent of anti-UV (Ultraviolet) agent. The hyperbranched polyester copolymer is a copolymer ofcarboxyl-containing hyperbranched polyester acrylate and glycidyl methacrylate; The carboxyl-containing hyperbranched polyester acrylate is obtained by modifying hyperbranched polyester with butanedioic anhydride, hexamethylene diisocyanate and hydroxyethyl acrylate. The spraying-free polybutylene terephthalate fiber-added composite material has the advantages of low floating fiber on the surface, high gloss, high hardness, excellent mechanical properties, excellent heat resistance and the like.

The invention discloses a glass fiber reinforced polypropylene composition and a preparation method thereof. The glass fiber reinforced polypropylene composition is prepared from the following components in parts by weight: 5-15 parts of high-melt-index polypropylene, 35-75 parts of low-melt-index polypropylene, 20-40 parts of glass fibers, 3-8 parts of a compatilizer, 0.5-1 part of silicone powder, 0.5-2 parts of zinc oxide and 0.4-0.8 parts of other assistants, wherein the melt index of the high-melt-index polypropylene under the conditions of the temperature of 230 DEG C and the load of 2.16 kg is 100-200 g / 10 min, and the melt index of the low-melt-index polypropylene under the conditions of the temperature of 230 DEG C and the load of 2.16 kg is 1-10 g / 10 min. The glass fiber reinforced polypropylene composition disclosed by the invention has excellent properties of high strength, high rigidity, dimensional stability and low floating fiber.

The invention discloses a modified polypropylene composite material with high wear resistance. The modified polypropylene composite material is prepared from raw materials in parts by weight as follows: 60-75 parts of polypropylene, 10-15 parts of modified mica, 5-10 parts of glass fibers, 2-4 parts of a compatilizer, 2 parts of a surface slipping agent, 0.2-0.4 parts of a surface floating fiber resisting auxiliary and 0.9 parts of other auxiliaries. With addition of modified mica, the glass fibers, the compatilizer and the other auxiliaries, the dispersion condition of the modified mica and the glass fibers in a matrix is better, and the matrix is combined with the material more stably, so that finger scratching resistance of the material is improved; the finger scratching resistance of the surface of the composite material is excellent, the surface has no obvious change after being scratched, notch impact strength is higher than 5 KJ / m<2>, bending modulus is higher than 2000 MPa, and the use range of the material is wide.

The invention discloses a high-rigidity metal-like nylon composite material and a preparation method thereof. Raw materials include, by weight, 100 parts of nylon-610, 30-70 parts of nylon-6, 1-5 parts of an antioxidant, 1-5 parts of a lubricant, 1-5 parts of coupling agents, 30-100 parts of long glass fiber, and 70-450 parts of short glass fiber. According to the material formula, in the ultra-high filled composite material, the lubricant comprises a dendritic type nylon lubricant which can greatly reduce material degradation caused by shear heat, the compound of the dendritic nylon lubricantand zinc stearate has a strong complementation effect, use of the coupling agents can reduce floating fiber, and thus, mechanical performance of the composite material can be improved greatly.

The invention discloses a reinforced polypropylene material and a preparation method and application thereof, comprising: 30-70 parts of straight-chain polypropylene; 2-50 parts of long-chain branched polypropylene; 1-20 parts of a compatibilizer; 60 parts; 0.1-20 parts of fluorine compounds; the polypropylene material prepared by the invention has high surface gloss, good toughness and high melt strength, and is mainly suitable for blow molding and suction molding and other occasions.

The invention discloses a glass fiber reinforced polycarbonate composite material which comprises the following components in parts by weight: 80 parts of polycarbonate; 50 to 100 parts of glass fibers; wherein the weight of the PBAT and / or PBSA is 0.01-0.3 time of the total weight of the glass fibers. According to the invention, by adding a certain amount of PBAT and / or PBSA, the technical defects that the glass fiber reinforced polycarbonate composite material highly filled with glass fibers is serious in fiber floating and easy to generate crazing due to poor fluidity of polycarbonate are improved, the defect of poor solvent resistance of polycarbonate is improved, and the mechanical properties can be well maintained.

The invention discloses a low-emission, low-floating-fiber, low-warping and ultra-dispersed long glass fiber polyamide composite material and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing all the raw materials except long glass fibers, and adding the mixture into a double-screw extruder from a main feeding hopper; enabling the long glass fibers to penetrate through a fiber adding hole; and performing melt impregnation extrusion in the double-screw extruder to obtain the low-emission, low-floating-fiber, low-warping and ultra-dispersed long glass fiber polyamide composite material. A melt impregnation section in the double-screw extruder is provided with a plurality of sequentially-arranged infiltration type extrusion compression bar groups; each infiltration type extrusion compression bar group comprises two compression bars which have opposite cambered surfaces and are arranged in a staggered mode; the cambered surfaces of the compression bars with the downward cambered surfaces are provided with a plurality of protrusions arranged and distributed in the direction perpendicular to the moving direction of the long glass fibers; and a plurality of grooves which are arranged and distributed in the direction perpendicular to the moving direction of the long glass fibers are formed in the cambered surfaces of the compression bars with the upward cambered surfaces.

The invention discloses a PC (polycarbonate) / ABS (acrylonitrile butadiene styrene) composition with an ESD (electro-static discharge) function and application thereof. The PC / ABS composition with the ESD function is prepared from the following components: PC resin, ABS resin, carbon fibers, carbon nanotubes, a toughening agent and other auxiliaries, the length distribution of the carbon fibers comprises the following components in percentage by weight: 30-40% of carbon fibers with the particle size of less than 120 microns (not including 120 microns), 15-25% of carbon fibers with the particle size of 120-180 microns, 30-40% of carbon fibers with the particle size of 180-350 microns (not including 180 microns) and 5-15% of carbon fibers with the particle size of more than 350 microns (not including 350 microns). The PC / ABS composition with the ESD function is prepared through the synergistic effect of the carbon fibers with specific length distribution and the carbon nanotubes with a very small addition amount, the melt viscosity is proper, and the surface has low floating fibers.

The invention discloses a high-rigidity metal-like nylon composite material and a preparation method thereof. The raw materials include the following components in parts by weight: nylon 610 100; nylon 6 30-70; antioxidant 1-5; lubricant 1-5 ; Coupling agent 1‑5; Long glass fiber 30‑100; Short glass fiber 70‑450. In terms of material formulation of the present invention, the ultra-highly filled composite material includes dendritic nylon lubricant in the lubricant, which can greatly reduce the material degradation caused by shear heat. In addition, dendritic nylon lubricant and zinc stearate The combination of the two can play a strong complementary effect. The use of the formula coupling agent can reduce the floating fiber and greatly improve the mechanical properties of the material.

The invention discloses a two-material bonding apparatus, a two-material bonding method and a two-material bonding product. The two-material bonding apparatus comprises: an injection molding machine,wherein the injection molding machine has a main injection table and a sub injection table, and the main injection table and the sub injection table are used for respectively injecting a first material and a second material to mold the first component and the second component of a product; a mold having a main material inlet and a sub material inlet, wherein the first component and the second component are molded in the mold and are directly combined into the product; and a mold temperature variable controller, wherein the mold further has a timing controller. The two-material bonding method comprises that the main injection table of the injection molding machine injects the first material into the mold through the main material inlet of the mold to mold the first component; the injectiontiming is controlled by the timing controller of the mold, and the sub injection table of the injection molding machine injects the second material into the mold through the sub material inlet of themold to mold the second component; and the first component and the second component are directly combined to form the product. The product is molded through the method. With the method and the apparatus of the present invention, the cost and the working time are saved, the appearance of the product is good, and the yield of the mass production is improved.