Glass fiber reinforced polylactic acid composite material, preparation method and applications thereof

A composite material and polylactic acid technology, applied in the field of glass fiber reinforced polylactic acid composite material and its preparation, can solve the problems of limited mechanical properties and low preparation efficiency, and achieve the effects of excellent mechanical properties, simple operation and good appearance quality.

Inactive Publication Date: 2017-09-12
HEILONGJIANG XINDA ENTERPRISE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a glass fiber reinforced polylactic acid composite material and its preparation method and application, which are used to solve technical defects such as limited mechanical properties and low preparation efficiency of glass fiber composite materials in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The glass fiber reinforced polylactic acid composite material of this embodiment is composed of the following components by weight: 40 parts of glass fiber, 60 parts of D-polylactic acid with a weight average molecular weight of 250000, 3 parts of phenyltrimethoxysilane, anti-oxidant 10121.5 parts of lubricant, 0.5 part of lubricant EBS, 2900.5 parts of light stabilizer.

[0034] The glass fiber reinforced polylactic acid composite material can be prepared by the following method;

[0035] 1. Preparation of polylactic acid melt

[0036] After mixing 60 parts by weight of D-polylactic acid with a weight-average molecular weight of 250000, 3 parts by phenyltrimethoxysilane, 10121.5 parts by weight of antioxidant, 0.5 parts by weight of lubricant EBS, and 2900.5 parts by weight of light stabilizer, after feeding The feeding device is sent into the twin-screw extruder, and the temperature of each section of the twin-screw extruder is set to 140°C, 170°C, 190°C, 200°C, 205...

Embodiment 2

[0040] The glass fiber reinforced polylactic acid composite material of this embodiment is composed of the following components by weight: 20 parts of glass fiber, 80 parts of polylactic acid with a weight average molecular weight of 500000, γ-methacryloxytrimethoxy 4 parts of silane, 1652 parts of antioxidant, 0.8 part of lubricant EBS, 7730.5 parts of light stabilizer; the glass fiber reinforced polylactic acid composite material can be prepared by the following method;

[0041] 1. Preparation of polylactic acid melt

[0042] After mixing 80 parts by weight of polylactic acid with a weight average molecular weight of 500000, 1652 parts of antioxidant, 0.8 part of lubricant EBS, 4 parts of γ-methacryloxytrimethoxysilane, and 7730.5 parts of light stabilizer, Feed into the twin-screw extruder for melt blending, wherein the temperature of each section of the twin-screw extruder is respectively set as: 170°C, 190°C, 205°C, 215°C, 225°C, the screw speed, 40r / min, and the formed ...

Embodiment 3

[0046] The glass fiber reinforced polylactic acid composite material of this embodiment is composed of the following components by weight: 60 parts of glass fiber, 40 parts of D-polylactic acid with a weight average molecular weight of 600000, 1.5 parts of vinyltrimethoxysilane, antioxidant 1700.5 parts of agent, 0.1 part of silicone powder, 2900.1 parts of light stabilizer.

[0047] The glass fiber reinforced polylactic acid composite material can be prepared by the following method;

[0048] 1. Preparation of polylactic acid melt

[0049] After mixing 40 parts by weight of D-polylactic acid with a weight average molecular weight of 600000, 1680.5 parts of antioxidant, 1.5 parts of vinyltrimethoxysilane, 1700.5 parts of antioxidant, 0.1 part of silicone powder and 2900.1 parts of light stabilizer, Feed into the twin-screw extruder for melt blending, wherein the temperature of each section of the twin-screw extruder is respectively set to 155°C, 175°C, 200°C, 210°C, 215°C, t...

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Abstract

The present invention provides a glass fiber reinforced polylactic acid composite material, a preparation method and applications thereof, wherein the glass fiber reinforced polylactic acid composite material comprises, by weight, 20-60 parts of glass fiber, 40-80 parts of polylactic acid, 1.5-5 parts of a silane coupling agent, 1-2 parts of an antioxidant, and 0.1-1 part of a lubricant. According to the present invention, the prepared glass fiber reinforced polylactic acid composite material is biodegradable, has excellent mechanical property and excellent thermal stability, has wide application range, and particularly can replace the traditional metal material and be used as the vehicle member material, wherein the molded vehicle member has characteristics of light weight and good appearance quality, and can well meet the use performance of the vehicle member.

Description

technical field [0001] The invention relates to a glass fiber reinforced composite material, in particular to a glass fiber reinforced polylactic acid composite material and its preparation method and application. Background technique [0002] The invention discloses a glass fiber reinforced polylactic acid composite material and a preparation method thereof, belonging to the field of glass fiber reinforced biodegradable polymer materials. The raw materials are mixed according to the ratio, and the mixed raw materials are fully melted and mixed through the twin-screw extruder, and sent to the melt pool of the impregnation system of the glass fiber reinforced melt mixing and fiber impregnation equipment. The glass fiber is fully impregnated by the polylactic acid melt in the impregnation system, and the internal stress is eliminated through the continuous heat treatment system. According to different needs, the impregnated and heat-treated continuous glass fiber reinforced po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L83/04C08K13/04C08K7/14C08K5/5419C08K5/134C08K5/20C08K5/5425B29C47/92B29C48/92
CPCC08L67/04B29C48/92B29C2948/9258B29C2948/92704B29C2948/92857B29C2948/92885C08K5/1345C08K5/20C08K5/5419C08K5/5425C08K7/14C08K13/04C08L2201/06C08L2201/08C08L83/04
Inventor 于敬阳崔成杰谢众
Owner HEILONGJIANG XINDA ENTERPRISE GRP
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