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A kind of polypropylene composite material and preparation method thereof

A technology for composite materials and polypropylene, which is applied in the field of polypropylene composite materials and its preparation, can solve the problems of complex preparation process, long preparation cycle and difficulty in mass production, and achieve simple preparation process, suitable for large-scale mass production, The effect of enhanced frictional stability

Active Publication Date: 2021-02-09
WUHAN JINFA TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN105315418A mentions a preparation method of tungsten dioxide modified phenolic resin, tungsten dioxide improves the corrosion resistance and wear resistance of phenolic resin, but this method is difficult to measure due to the complicated preparation process and long preparation cycle production

Method used

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  • A kind of polypropylene composite material and preparation method thereof
  • A kind of polypropylene composite material and preparation method thereof
  • A kind of polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 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.

[0030] The preparation method of polypropylene composite material described in this embodiment is:

[0031] (1) take each component by proportioning;

[0032] (2) Put tungsten disulfide nanorods, compatibilizer, polypropylene accounting for 30%-50% of the total polypropylene weight and processing aid accounting for 20%-40% of the total weight of the processing aid into the internal mixer for compaction Refining, then adopting the single-screw extruder extruding granulation that the length-to-diameter ratio of the extrusion screw is 20:1, obtains tungsten disulfide nanorod masterbatch;

[0033] (3) The remaining polypropylene, the tungsten disulfide nanorod masterbatch, toughening agent, mineral filler, coloring agent and remaining processing aids of the gained tungsten disulfide of step (2) are...

Embodiment 2～5

[0035] The components of the polypropylene composite materials described in Examples 2-5 are shown in Table 1, and the preparation methods of the polypropylene composite materials described in Examples 2-5 are the same as in Example 1.

[0036] The polypropylene composite material described in Examples 1 to 5 is injection-molded into ISO mechanical splines and long plates of 200×5×2mm by injection molding machine, and then its tensile strength, bending strength, notched impact strength, abrasion resistance and scratch resistance are measured. , surface Rockwell hardness and surface friction coefficient and other properties. The test results are shown in Table 1.

[0037] Among them, the test methods for each performance index are:

[0038] Tensile strength test standard is based on ISO 527-2, test conditions: temperature 23°C, tensile rate 50mm / min;

[0039] Bending strength test standard is based on ISO 178, test conditions: temperature 23°C, bending rate 2mm / min, span 64mm...

Embodiment 6

[0048] The content of tungsten disulfide nanorods in the polypropylene composite material of the present invention affects the performance of the polypropylene composite material. In order to investigate the influence of the content of tungsten disulfide nanorods on the performance of the polypropylene composite material, the applicant prepared according to the method of Example 1 The polypropylene composite materials of the test group and the control group were tested according to the performance test methods of the polypropylene composite materials described in the above-mentioned Examples 1-5, and the properties of the polypropylene composite materials of the test group and the control group in this embodiment were tested.

[0049] In this example, the components and properties of the polypropylene composite materials of the test group and the control group are shown in Table 2.

[0050] Table 2

[0051]

[0052] In the above Table 2, the polypropylene is PP EP548R, a co...

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Abstract

The invention relates to a polypropylene composite material and a preparation method thereof, belonging to the technical field of modified materials. The polypropylene composite material of the invention comprises the following components in parts by weight: 65-80 parts of polypropylene, 2-12 parts of tungsten disulfide nanorods, and 1-8 parts of compatibilizer. In the present invention, tungsten disulfide nanorods with a specific content are added to the polypropylene matrix under the synergistic dispersion of a compatibilizer with a specific content, so that the WS in the prepared polypropylene composite material 2 rub against each other, resulting in layered sliding, WS 2 Being thinned and ground small, the small chips fill the defects in the wear process, so the friction fluctuation is further reduced and the friction stability is enhanced. Thus, the scratch resistance and strength of the polypropylene composite material obtained in the present invention are obviously improved.

Description

technical field [0001] The invention relates to a polypropylene composite material and a preparation method thereof, belonging to the technical field of modified materials. Background technique [0002] Polypropylene is widely used in industries such as automobiles, home appliances, packaging, and pipes because of its light weight and low price. However, due to its low surface hardness, large friction coefficient, low strength, low hardness, low surface polarity, and easy scratches. The use is subject to many restrictions, and people began to modify polypropylene according to the needs of use to meet the use in different fields. [0003] The currently used method is to add elastomer materials to the polypropylene matrix to improve the impact strength, and to improve the tensile strength, bending strength and bending modulus by introducing 10-40% talcum powder, mica powder, wollastonite, kaolin and other fillers. The amount of scratch resistance is improved by introducing sc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L53/00C08L23/14C08L51/06C08L23/08C08K13/04C08K7/00C08K3/30C08K5/134C08K3/04C08K3/36C08K3/26C08K3/34C08J3/22
CPCC08J3/226C08J2323/12C08J2323/14C08J2353/00C08J2423/12C08J2423/14C08J2453/00C08K2003/265C08K2003/3009C08K2201/011C08L23/12C08L23/14C08L53/00C08L2205/03C08L51/06C08L23/0815C08K13/04C08K7/00C08K3/30C08K5/1345C08K3/04C08K3/34C08K3/26C08K5/526C08K3/36
Inventor 丁鹏余启生周英辉袁刚黄朝亮万文平陆新
Owner WUHAN JINFA TECH CO LTD
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