Polypropylene composite material and preparation method and application thereof

A technology for composite materials and polypropylene, which is applied in the field of polypropylene composite materials and its preparation, can solve the unsolved problems of low linear expansion coefficient, gloss and touch of polypropylene materials, and achieve low gloss, good touch and low linearity The effect of the coefficient of expansion

Inactive Publication Date: 2019-01-15
WUHAN JINFA TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The properties emphasized in the application are high rigidity (improved flexural modulus), warpage resistance (not low linear expansion coefficient), high heat resistance, but it does not solve the problems of low linear expansion coefficient, gloss and tactility of polypropylene materials

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

[0030] An embodiment of the polypropylene composite material of the present invention, the components of the polypropylene composite material in this embodiment are shown in Table 1.

[0031] The preparation method of polypropylene composite material described in this embodiment is:

[0032] (1) Put polypropylene, polyurethane, glass fiber and compatibilizer into a high-mixer according to the proportion and mix them thoroughly for 5 to 30 minutes, and mix evenly to obtain a mixture;

[0033] (2) Put the mixture obtained in step (1) into a twin-screw extruder with a length-to-diameter ratio of 40:1, melt, mix and disperse it, and then extrude and granulate to obtain a polypropylene composite material; wherein, each zone of the twin-screw extruder The temperature is 190-240° C., and the rotational speed of the twin-screw extruder is 300-800 rpm.

Embodiment 2～17 and comparative example 1～6

[0035] The composition components of the polypropylene composite materials described in Examples 2-17 and Comparative Examples 1-6 are all as shown in Table 1, and the preparation methods of the polypropylene composite materials described in Examples 2-17 and Comparative Examples 1-6 are all the same Example 1.

[0036] Simultaneously, test the following properties of the polypropylene composite material described in Examples 1 to 17 and Comparative Examples 1 to 6: tensile strength, flexural modulus, notched Izod impact strength, coefficient of linear expansion (CLTE), scratch resistance ( ΔL), gloss and touch. Among them, the test methods for each performance are:

[0037] The tensile strength test standard is ISO 527, and the test conditions are: tensile rate 50mm / min;

[0038] The flexural modulus test standard is ISO 178, and the test conditions are: bending rate 2mm / min, span 64mm;

[0039] The test standard for notched Izod impact strength is ISO 180, and the test co...

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Abstract

The invention relates to a composite material and a preparation method and an application thereof, and in particular, relates to a polypropylene composite material and a preparation method and an application thereof. The polypropylene composite material comprises the following components in parts by weight: 42 to 67 parts of polypropylene, 15 to 25 parts of polyurethane, 15 to 25 parts of glass fibers and 3 to 8 parts of a compatibilizer. By introduction of polyurethane and the glass fibers at the same time, and by promotion of the compatibility, dispersion form and proportion of all the components, the obtained polypropylene composite material has five excellent properties: rigidity-toughness balance, low linear expansion coefficient, scratch resistance, low glossiness and good touch feeling. The polypropylene composite material can be widely applied in automobile interior trim parts such as main and auxiliary dashboards, door guard boards or stand columns.

Description

technical field [0001] The invention relates to a composite material and its preparation method and application, in particular to a polypropylene composite material and its preparation method and application. Background technique [0002] The preferred material for automotive interior parts is polypropylene. Some components, such as instrument panels, door panels, and instrument panel central controls, also pursue matte and good-touch appearance effects on the premise of meeting basic mechanics, dimensions, and assembly requirements. [0003] The patent application with the application number 201711336168.X discloses a modified polypropylene material for auto parts. In order to overcome the dyeability, adhesion and antistatic properties, the application introduces chlorinated polyethylene, phosphorus, sulfur, Adhesives, aluminum and manganese, however chlorinated polyethylene is difficult to process, in order to solve this problem, the application also introduces plasticizer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L75/04C08L51/06C08K7/14
CPCC08L23/12C08L23/14C08L2205/025C08L2205/03C08L2205/035C08L75/04C08L51/06C08K7/14
Inventor 程文超何浏炜王传新陈瑶陈胜杰熊值赖昂
Owner WUHAN JINFA TECH CO LTD
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