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Polypropylene composite material and preparation method and application thereof

A technology of composite materials and polypropylene, which is applied in the field of polypropylene composite materials and its preparation, can solve the problems of high density of polypropylene composite materials, unsatisfactory material impact performance, and does not meet the requirements of lightweight, and achieve high impact and low density Effect

Pending Publication Date: 2021-05-07
重庆会通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the Chinese patent application with publication number CN109575446A, a small amount of whiskers and a small amount of nucleating agent are used to form different morphological structures in the vertical flow direction during the injection molding process to improve the performance of the material. However, a large amount of carbonic acid is used in this technical solution. Calcium or talcum powder is used for filling, so that the material density will be greater than 1.0g / cm 3 , and the impact performance of the final material is not ideal; the Chinese patent application with the publication number CN105542375A uses ultra-fine talcum powder to fill polypropylene, feed it from the side, and optimize the formula to improve the performance of the material. In the same technical solution The density of the prepared polypropylene composite material is too high, which does not meet the requirements of lightweight

Method used

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  • 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

[0045]In this example, 54 parts of PP resin BX3920, 20 parts PP resin K9017H, 9.5 parts of PP resin SP179, 5 parts of the base, magnesium sulfate crystal, WS-1S2, 10 parts, elastic body 8842, 10 parts, nuclear agents Na-11 , 0.3 parts compatible agent CA100, 0.2 parts of antioxidants 1010, 0.2 parts of antioxidants 168, 0.3 parts light stabilizer UV-P, 0.3 parts lubricant AV300, specifically shown in Table 1.

[0046]The shear blocks of the main feed and the side feed are arranged in 45 ° / 45 ° / 90 ° / 45 ° / 90 ° / 90 ° / 45 ° (reverse), the rest is the conveying block; the side feed and the head The shear block is arranged: 45 ° / 45 ° / 45 ° (reverse) / 45 ° / 45 ° / 45 ° (reverse) / 45 ° / 45 ° (reverse), the rest is conveying blocks .

[0047]The preparation step of the polypropylene composite is: adding the above polypropylene resin, an elastomer, a nucleating agent, a compatible agent, and auxiliary agent to a high-speed agitator, stirring at a mixture of 3-5 min, resulting in a ...

Embodiment 2

[0050]In this example, 52 parts PP resin BX3920, 18 parts PP resin K9017H, 8.5 parts of PP resin SP179, and 10 parts of the base, magnesium sulfate crystal, WS-1S2, 10 parts, elastic body 8842, 0.2 parts nucleating agent NA-11 , 0.3 parts compatible agent CA100, 0.2 parts of antioxidants 1010, 0.2 parts of antioxidants 168, 0.3 parts light stabilizer UV-P, 0.3 parts lubricant AV300, specifically shown in Table 1.

[0051]The shear blocks of the main feed and the side feed are arranged in 45 ° / 45 ° / 90 ° / 45 ° / 90 ° / 90 ° / 45 ° (reverse), the rest is the conveying block; the side feed and the head The shear block is arranged: 45 ° / 45 ° / 45 ° (reverse) / 45 ° / 45 ° / 45 ° (reverse) / 45 ° / 45 ° (reverse), the rest is conveying blocks .

[0052]The preparation method of polypropylene composites is the same as in Example 1.

Embodiment 3

[0054]In this embodiment, 50 parts of PP resin BX3920, 16 parts of PP resin K9017H, 7.5 parts of PP resin SP179, 15 parts of the base, magnesium sulfate crystal, WS-1S2, 10 parts, elastomer, 8842, 0.2 parts nucleation agent NA-11 , 0.3 parts compatible agent CA100, 0.2 parts of antioxidants 1010, 0.2 parts of antioxidants 168, 0.3 parts light stabilizer UV-P, 0.3 parts lubricant AV300, specifically shown in Table 1.

[0055]The shear blocks of the main feed and the side feed are arranged in 45 ° / 45 ° / 90 ° / 45 ° / 90 ° / 90 ° / 45 ° (reverse), the rest is the conveying block; the side feed and the head The shear block is arranged: 45 ° / 45 ° / 45 ° (reverse) / 45 ° / 45 ° / 45 ° (reverse) / 45 ° / 45 ° (reverse), the rest is conveying blocks .

[0056]The preparation method of polypropylene composites is the same as in Example 1.

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Abstract

The invention discloses a polypropylene composite material and a preparation method and application thereof. The polypropylene composite material is prepared by blending 40-60 parts by weight of high-melt-index polypropylene, 15-30 parts by weight of medium-melt-index polypropylene, 5-15 parts by weight of low-melt-index polypropylene, 1-20 parts by weight of an elastomer, 0.05-0.5 part by weight of a nucleating agent, 0.05-0.5 part by weight of a compatilizer, 1-20 parts by weight of basic magnesium sulfate whiskers and 0.5-3 parts by weight of an auxiliary agent and then extruding the mixture through a double-screw extruder, and the distribution of shearing blocks of the main feeder and the side feeder as well as the side feeder and the machine head of the double-screw extruder is adjusted, so that the obtained polypropylene composite material has the characteristics of high flowability, high rigidity, high toughness and low density.

Description

Technical field[0001]The present invention belongs to the field of high-profile material modification, and more particularly to a polypropylene composite material and a preparation method thereof.Background technique[0002]Polypropylene (referred to as PP) material is a versatile thermoplastic resin having a small density, low price, easy processing molding, and excellent mechanical properties, and is therefore widely used in automotive internal and external articles. However, the physical properties of polypropylene without modified polypropylene do not be directly applied to most parts of the vehicle, and therefore most of the polypropylene materials need to be modified before the application.[0003]With the development of the automotive industry, almost all car companies are pursuing lightweight, requiring that the parts are getting lighter. In order to achieve the above object, the first part is that the wall thickness is getting thinner, and the conventional parts wall thickness ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/08C08L51/06C08K7/08C08K5/527C08K13/04
CPCC08L23/14C08L2205/025C08L2205/035C08K2201/004C08K2201/016C08L2205/24C08L23/0815C08L51/06C08K7/08C08K5/527C08K13/04
Inventor 朱福朋冉红川李查吴庭钢贾鹏
Owner 重庆会通科技有限公司
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