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Long glass fiber enhanced polypropylene composite material with low shrinkage and low warpage and preparation method and application thereof

A composite material, polypropylene technology, used in the manufacture of automobile tailgate panels, long glass fiber reinforced polypropylene composite materials and their preparation fields, can solve problems such as no better solutions, and achieve good appearance, manufacturing The effect of reducing shrinkage and warpage of parts and improving mechanical properties

Active Publication Date: 2017-09-01
CGN JUNER NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, there is still no good solution to the shrinkage and warpage of glass fiber reinforced modified polypropylene materials.

Method used

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  • Long glass fiber enhanced polypropylene composite material with low shrinkage and low warpage and preparation method and application thereof
  • Long glass fiber enhanced polypropylene composite material with low shrinkage and low warpage and preparation method and application thereof
  • Long glass fiber enhanced polypropylene composite material with low shrinkage and low warpage and preparation method and application thereof

Examples

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Effect test

Embodiment 1～4 and comparative example 1～4

[0042] Low shrinkage, low warpage long glass fiber reinforced polypropylene composite materials, the raw material ratios of Examples 1 to 4 and Comparative Examples 1 to 4 are listed in Table 1 and Table 2 below, unless otherwise stated, percentages refer to Percentage by weight, the zinc oxide whiskers are four needle-shaped zinc oxide whiskers, the length of the needle-shaped body is 10-50 μm, the root of the needle-shaped body is 0.5-5 μm, the aspect ratio is 20-50, and the apparent density is 0.2±0.1g / cm 3 , the true density is 5.4±0.2g / cm 3, heat resistance 800 ~ 1800 ℃; glass beads are hollow glass beads, the density is 0.2g / cm 3 ~0.7g / cm 3 , the particle size distribution is between 5 and 35 microns.

[0043] The preparation method of low shrinkage and low warpage long glass fiber reinforced polypropylene composite material comprises the following steps:

[0044] (1) drying the zinc oxide whiskers at 80°C for 4 hours to obtain dried zinc oxide whiskers;

[0045] (...

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Abstract

The invention discloses a long glass fiber enhanced polypropylene composite material with low shrinkage and low warpage, a preparation method thereof, and application of the long glass fiber enhanced polypropylene composite material in manufacturing an automobile tail door sheet. The composite material is prepared from the following raw materials in parts by weight: 30-80% of polypropylene, 10-60% of continuous glass fiber, 3-10% of compatilizer, 0.1-1.5% of antioxidant, 0.1-1% of lubricating agent, 0.5-3% of coupling reagent, 0.1-2% of nucleating agent, 5-20% of zinc oxide whisker and 0.5-3% of glass bead. The zinc oxide whisker, the nucleating agent and the glass bead are compounded, so that the composite material achieves an ideal enhancement effect, the differential degree of glass fiber along a fiber glass orientation between a flowing direction and a vertical flowing direction in a polypropylene matrix is reduced, and the shrinking percentage and the warping degree of the composite material can be obviously lowered. The long glass fiber enhanced polypropylene composite material can be used for manufacturing the automobile tail door sheet.

Description

Technical field [0001] The invention relates to the technical field of polypropylene composite materials, and specifically relates to a long glass fiber reinforced polypropylene composite material with low shrinkage and low warpage, its preparation method and its application in manufacturing automobile tailgate panels. Background technique [0002] With the rapid development of the national economy, high-performance, low-cost thermoplastic resin-based composite materials have been widely used. Preparing fiber-reinforced thermoplastic resin-based composite materials (new structural composite materials, functional composite materials, etc.) by adding reinforcing fibers to thermoplastic resin and modifying the resin at the same time is an effective shortcut for the development of new materials. This has become the consensus of the scientific and technological circles and the industrial circles. It is also the best technical route to realize the engineering of general plastics, ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L51/06C08K13/04C08K7/14C08K7/08C08K7/28C08K5/523B29B9/06B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/9258B29C2948/92704C08L23/12C08L23/14C08L2205/03C08L2205/08C08L2205/24C08L2205/242C08L51/06C08K13/04C08K7/14C08K7/08C08K7/28C08K5/523
Inventor 郑云磊孙心克宋玉兴陈永波孙应郑京连李俊安孝善张景中
Owner CGN JUNER NEW MATERIALS
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