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Bast fiber plate waste recycling-based short fiber-reinforced composite material for automotive interiors and preparation method of bast fiber plate waste recycling-based short fiber-reinforced composite material

A technology of short fiber reinforcement and waste recycling, which is applied in the processing field of short fiber reinforced thermoplastic composite materials, can solve the problems such as the difficulty of blanking of hemp short fiber reinforced composite materials, and achieve the goals of solving the difficulty of blanking, reducing costs, and reducing reprocessing technology Effect

Inactive Publication Date: 2016-04-20
SHANGHAI PRET COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to propose a kind of short fiber reinforced composite material for automobile interior decoration based on the recovery and reuse of hemp fiber board waste material for existing product research and development status including technical defects, which can not only make full use of hemp fiber board waste material, but also achieve cost reduction, The purpose of environmental protection and energy saving, and solve the problem of difficult blanking of hemp short fiber reinforced composite materials, and facilitate the realization of twin-screw extrusion process

Method used

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  • Bast fiber plate waste recycling-based short fiber-reinforced composite material for automotive interiors and preparation method of bast fiber plate waste recycling-based short fiber-reinforced composite material
  • Bast fiber plate waste recycling-based short fiber-reinforced composite material for automotive interiors and preparation method of bast fiber plate waste recycling-based short fiber-reinforced composite material
  • Bast fiber plate waste recycling-based short fiber-reinforced composite material for automotive interiors and preparation method of bast fiber plate waste recycling-based short fiber-reinforced composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The jute fiber sheet waste with a fiber weight ratio of 50% was crushed and dried together with the polypropylene masterbatch at a drying temperature of 80°C for 12 hours. Then, melt index is 12.5g / 10min polypropylene 60 weight parts, antioxidant tetraerythritol ester 1.2 weight part, light stabilizer sodium stearate 0.9 weight part, lubricant salicylic acid p-octylphenyl 1.8 parts by weight of ester, 3 parts by weight of toughening agent maleic anhydride grafted polypropylene are melt mixed and dispersed in a twin-screw extruder with aspect ratio of 45:1, and 40 parts by weight of jute fiber and polypropylene mixed masterbatch are obtained from the side Feeding is added, extruded and granulated, and the extrusion process is: 170-180°C in zone 1, 180-190°C in zone 2, 190-200°C in zone 3, 190-200°C in zone 4, screw speed 400-450r / min, feeding frequency 10-25Hz, vacuum degree -0.04-0.07MPa.

Embodiment 2

[0028] The kenaf fiber board waste with a fiber weight ratio of 50% was crushed and dried together with the polypropylene masterbatch at a drying temperature of 80°C and a drying time of 12 hours. Then, melt index is 12.5g / 10min polypropylene 60 weight parts, antioxidant tetraerythritol ester 1.2 weight part, light stabilizer sodium stearate 0.9 weight part, lubricant salicylic acid p-octylphenyl 1.8 parts by weight of ester, 3 parts by weight of toughening agent maleic anhydride grafted polypropylene are melt-mixed and dispersed in a twin-screw extruder with aspect ratio of 45:1, and 40 parts by weight of kenaf fiber and polypropylene mixed masterbatch are obtained from Side feeding, extrusion granulation, the extrusion process is: 1 zone 170-180 ℃, 2 zone 180-190 ℃, 3 zone 190-200 ℃, 4 zone 190-200 ℃, screw speed 400-450r / min, feeding frequency 10-25Hz, vacuum degree -0.04-0.07MPa.

Embodiment 3

[0030] The flax fiber sheet waste with a fiber weight ratio of 50% was crushed and dried together with the polypropylene masterbatch at a drying temperature of 80°C for 12 hours. Then, melt index is 12.5g / 10min polypropylene 60 weight parts, antioxidant tetraerythritol ester 1.2 weight part, light stabilizer sodium stearate 0.9 weight part, lubricant salicylic acid p-octylphenyl 1.8 parts by weight of ester, 3 parts by weight of toughening agent maleic anhydride grafted polypropylene are melt mixed and dispersed in a twin-screw extruder with an aspect ratio of 45:1, and 40 parts by weight of flax fiber and polypropylene mixed masterbatch are obtained from the side Adding materials, extruding and granulating, the extrusion process is: zone 1 170-180°C, zone 2 180-190°C, zone 3 190-200°C, zone 4 190-200°C, screw speed 400-450r / min , Feeding frequency 10-25Hz, vacuum degree -0.04-0.07MPa.

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Abstract

The invention discloses a bast fiber plate waste recycling-based short fiber-reinforced composite material for automotive interiors. The bast fiber plate waste recycling-based short fiber-reinforced composite material is prepared from the following raw materials in parts by weight: 20-60 parts of crushed bast fiber plate materials, 100 parts of thermoplastic resin, 2-5 parts of an antioxidant, 1-3 parts of a light stabilizer, 2-5 parts of a lubricant and 0-10 parts of a flexibilizer. The bast fiber plate waste recycling-based short fiber-reinforced composite material has the beneficial effects that compared with the prior art, the bast fiber plate waste is recycled and changed into treasures; and the cost is reduced. The bast fiber plate is crushed and pelletized as a processing raw material for the short fiber-reinforced composite material, so that the problem that a bast fiber is difficult to feed is solved; the reprocessing technology of the bast fiber is reduced; the short fiber-reinforced composite material can be applied to the automotive interiors through an injection molding process; relatively complicated part injection molding manufacturing in the automobile industry can be further achieved; and the application situation that only the bast fiber plate is marketized in the field of the automotive interiors is also changed.

Description

technical field [0001] The invention belongs to the field of manufacturing hemp fiber reinforced composite materials for automobile interior decoration, and in particular relates to a processing method of short fiber reinforced thermoplastic composite materials based on a twin-screw extrusion process, which also includes the recovery and reuse of waste hemp fiber boards. Background technique [0002] The main trend of current automobile development is environmental protection, which is mainly reflected in recyclability and lightweight. The European Union stipulated in 2002 that at least 95% of the materials in the total weight of automobiles can be recycled from 2015; my country also proposed a technical policy in 2006 that the recycling rate of all domestic and imported automobiles should reach about 95% from 2017. Among them, the reusable rate of materials is not less than 85%. [0003] Since the 1990s, hemp fiber reinforced composites have become a global research and dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L97/02C08L51/06C08K5/103C08K5/098C08K5/134C08J5/04B29B9/06
CPCC08L23/12B29B9/06C08J5/045C08J2323/12C08J2497/02C08L2205/03
Inventor 周楠婷巩祥壮张祥福周文
Owner SHANGHAI PRET COMPOSITES
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