Polypropylene composite material and preparation method and application thereof

A composite material and polypropylene technology, applied in the field of polypropylene composite materials and its preparation, can solve the problems of poor compatibility between fibers and polypropylene matrix, poor mechanical properties, etc., achieve excellent mechanical properties, light weight, and promote fiber dispersion Effect

Inactive Publication Date: 2020-04-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a polypropylene composite material and its preparation method and application in

Method used

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  • Polypropylene composite material and preparation method and application thereof
  • Polypropylene composite material and preparation method and application thereof
  • Polypropylene composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] First, at an ambient temperature of 25°C, use a high-speed mixer to mix the raw materials weighed according to the following formula to obtain a uniformly mixed material; then, add the mixed material to a twin-screw extruder for melt blending (mixing The final materials are successively passed through the melting and blending intervals with temperatures of 170°C, 172°C, 172°C, 175°C, 180°C, 180°C, 175°C, and 175°C) and then stretched, air-cooled, pelletized, and sealed for packaging. The mixed masterbatch is obtained, that is, the hemp fiber reinforced polypropylene composite material. The screw length-to-diameter ratio of the twin-screw extruder used was 40:1.

[0050]

Embodiment 2

[0052] Carry out embodiment 2 in the same manner as embodiment 1, difference is that embodiment 2 adopts the raw material component weighed by following formula:

[0053]

Embodiment 3

[0055] Carry out embodiment 3 in the same manner as embodiment 1, difference is that embodiment 3 adopts the raw material component weighed by following formula:

[0056]

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Abstract

The invention relates to the field of composite materials, and particularly relates to a polypropylene composite material and a preparation method and application thereof. The polypropylene compositematerial contains polypropylene, hemp fibers, itaconic acid epoxy, a flexibilizer and an initiator. The method of the polypropylene composite material comprises the following steps: uniformly mixing the polypropylene, the hemp fibers, the itaconic acid epoxy, the flexibilizer and the initiator, and melting, blending and extruding the mixture. The application of the polypropylene composite materialrelates to the application of the polypropylene composite material in the preparation of automobile parts. In the polypropylene composite material, dilauroyl peroxide is used as the initiator, so that the itaconic acid epoxy can reactively compatibilize the interfacial compatibility of the polypropylene and the hemp fibers, is beneficial to improving the compatibility of polypropylene and plant fibers, and has the effect of promoting fiber dispersion, thereby ensuring that the polypropylene composite material has excellent mechanical properties and processability.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a polypropylene composite material and its preparation method and application. Background technique [0002] The widespread use of petroleum-based plastics not only consumes a large amount of petroleum resources, but also leads to increasingly severe environmental problems. At present, my country needs to process 20 million tons of waste plastics every year. Recycling these waste plastics is not only difficult but also costly. At the same time, there are 700 million tons of crop straw in my country every year, of which 200 million tons are burned, causing air pollution. Using natural fibers or crop straws as fillers to develop high-filling, high-performance natural fiber-reinforced composite materials can reduce the cost of materials and bring great economic benefits to enterprises, and help relieve environmental pressure and bring huge It is a promising "green, low-carbon, r...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L1/02C08L23/08
CPCC08L23/14C08L1/02C08L23/0815
Inventor 孟鸿诚林华杰陈建国汤兆宾杨勇黄爱斌柳翼李中丹朱锦
Owner CHINA PETROLEUM & CHEM CORP
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