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Preparation method of aramid fiber modified long glass fiber reinforced thermoplastic

A technology of reinforced thermoplastic and long glass fiber, which is applied in the field of modified plastics and composite materials, can solve the problems of inability to form a three-dimensional rigid skeleton and short length of residual glass fiber, so as to improve the degree of floating fiber on the surface, high added value of products, and raw materials low cost effect

Inactive Publication Date: 2017-07-04
SHANDONG DAWN POLYMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These patents all affirm the important role of aramid fibers in the modification of thermoplastics, but none of them are based on LFT-G technology, and the resulting products are not long glass fiber reinforced thermoplastic materials, that is, the length of residual glass fibers in the final molded products is uniform. Shorter, much lower than the glass fiber critical length L 0 , cannot form a three-dimensional rigid skeleton

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 30KG of nylon 66 (brand EPR24, viscosity 2.4), 5KG of compatibilizer maleic anhydride grafted POE (brand KT-915, graft rate 1.0-2.0%), 0.1KG of antioxidant 1098 and 0.1KG Antioxidant 168 is mixed evenly in a high-speed mixer and put into a twin-screw extruder for high-temperature melting. The temperature of the twin-screw extruder is set at 250-280°C; Diameter 17μm, linear density 2400Tex) into the special mold for impregnating long glass fiber, the temperature of the mold is set at 260-300°C; the melt is input into the special mold for impregnating long glass fiber, so that the melt is impregnated and coated with long glass fiber, dragged, cooled and cut Granules, long glass fiber reinforced PA66 masterbatches (grain length 12mm). 30KG nylon 66 (grade EPR24, viscosity 2.4), 5KG chopped aramid (length 3mm, single filament diameter 10μm), 0.5KG silane coupling agent KH560, 0.1KG antioxidant 1098 and 0.1KG antioxidant 168 in After mixing evenly in the high-speed mixer, p...

Embodiment 2

[0042] 30KG of nylon 66 (brand EPR24, viscosity 2.4), 5KG of compatibilizer maleic anhydride grafted POE (brand KT-915, graft rate 1.0-2.0%), 0.1KG of antioxidant 1098 and 0.1KG Antioxidant 168 is mixed evenly in a high-speed mixer and put into a twin-screw extruder for high-temperature melting. The temperature of the twin-screw extruder is set at 250-280°C; Diameter 17μm, linear density 2400Tex) into the special mold for impregnating long glass fiber, the temperature of the mold is set at 260-300°C; the melt is input into the special mold for impregnating long glass fiber, so that the melt is impregnated and coated with long glass fiber, dragged, cooled and cut Granules, long glass fiber reinforced PA66 masterbatches (grain length 12mm). Mix 30KG nylon 66 (brand EPR24, viscosity 2.4), 0.5KG silane coupling agent KH560, 0.1KG antioxidant 1098 and 0.1KG antioxidant 168 in a high-speed mixer and put them into the main feed of the twin-screw extruder Melt in the hopper, put 5KG ...

Embodiment 3

[0044] 30KG of nylon 66 (brand EPR24, viscosity 2.4), 5KG of compatibilizer maleic anhydride grafted POE (brand KT-915, graft rate 1.0-2.0%), 0.1KG of antioxidant 1098 and 0.1KG Antioxidant 168 is mixed evenly in a high-speed mixer and put into a twin-screw extruder for high-temperature melting. The temperature of the twin-screw extruder is set at 250-280°C; Diameter 17μm, linear density 2400Tex) into the special mold for impregnating long glass fiber, the temperature of the mold is set at 260-300°C; the melt is input into the special mold for impregnating long glass fiber, so that the melt is impregnated and coated with long glass fiber, dragged, cooled and cut Granules, long glass fiber reinforced PA66 masterbatches (grain length 12mm). Mix 30KG nylon 66 (grade EPR24, viscosity 2.4), 0.5KG silane coupling agent KH550, 0.1KG antioxidant 1098 and 0.1KG antioxidant 168 in a high-speed mixer and put them into the main feeding hopper of the extruder Melt, mix 3 strands of contin...

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Abstract

The invention relates to a formula, in which a thermoplastic material is produced from aramid fibers, long glass fibers and thermoplastic resin, and a manufacturing method of the thermoplastic, and belongs to the technical field of modified plastic and composite materials. On the basis of a long glass fiber reinforced thermoplastic granule process (LFT-G), by means of high strength, high toughness and high flexibility of the aramid fibers, the aramid fibers are uniformly dispersed and vertically and horizontally located in a three-dimensional rigid framework of the long glass fiber reinforced thermoplastic, thus improving the toughness and anti-impact strength of the composite material. By means of original LFT-G producing device, the method employs simple equipment and has short production route, is low in power consumption of the required equipment, has convenient operations and outstanding product performances. The product satisfies requirement of low-carbon environment protection and energy saving and emission reduction, and has good application prospect in the fields of automobiles, household appliances, aerospace, building materials, equipment manufacturing, etc.

Description

technical field [0001] The invention relates to a formula and a manufacturing method for preparing thermoplastic materials by utilizing aramid fibers, long glass fibers and thermoplastic resins, and belongs to the technical field of modified plastics and composite materials. Background technique [0002] Long Fiber Reinforced Thermoplastic (LFT, Long Fiber Reinforced Thermoplastic) is a kind of thermoplastic material that uses long glass fiber as a reinforced skeleton. It has high strength, high stiffness, high dimensional stability, low warpage, long service life, and Notable features such as creep can make up for the shortcomings of commonly used short fiber reinforced thermoplastics. It is precisely because long glass fiber reinforced thermoplastics have the above-mentioned outstanding properties that they are mainly used in automotive engineering plastic structural parts, replacing metal parts to save costs, reduce weight, and reduce energy consumption; replace high-pric...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L77/02C08L23/12C08L77/10C08L51/06C08K13/04C08K7/14C08J5/04C08J3/22B29B9/06B29B9/14
CPCB29B9/06B29B9/14C08J3/226C08J5/043C08J2323/12C08J2377/02C08J2377/06C08J2477/10C08K2201/003C08L23/12C08L77/02C08L77/06C08L2205/02C08L2205/025C08L2205/035C08L2205/08C08L2205/16C08L77/10C08L51/06C08K13/04C08K7/14
Inventor 邵有国王红王恩礼陈奇孙凤荣
Owner SHANDONG DAWN POLYMER CO LTD
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