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Polypropylene composite material and preparation method thereof

A composite material and polypropylene technology, applied in the field of polypropylene composite materials and its preparation, can solve problems such as unstable product quality and high material performance requirements, and achieve good balance of rigidity and toughness, simple process operation, and expanded application range.

Pending Publication Date: 2021-03-12
GUANGDONG JUSHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thin-walled injection molding PP has high requirements on material properties, and requires a matching thin-walled injection mold, while micro-foamed PP materials have uncertainties in the process and unstable product quality

Method used

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

Examples

Experimental program
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Embodiment 1～5

[0025] The embodiment of the polypropylene composite material of the present invention, the formula of the polypropylene composite material described in Examples 1 to 5 is shown in Table 1, and the preparation method comprises the following steps:

[0026] (1) Mix polypropylene, low-density polyethylene (LDPE), and toughening agent, and stir for 5 minutes at 1000 rpm to obtain mixture A;

[0027] (2) Add stabilizer and lubricant to mixture A, and stir for 5 minutes at 1000 rpm to obtain mixture B;

[0028] (3) Mix the glass fiber powder and filler, stir at 800rpm for 3min to obtain mixture C;

[0029] (4) Mixture B is added to the main feed port of the twin-screw extruder, and mixture C is added to the side feed port of the twin-screw extruder. The aspect ratio of the twin-screw extruder is 44:1, and the screw The rotational speed is 300 rpm, melt blending is carried out under the protection of inert gas or nitrogen at a temperature of 200°C, and finally extruded and granulat...

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Abstract

The invention discloses a polypropylene composite material, and relates to the technical field of composite materials. The polypropylene composite material is prepared from the following components inpercentage by mass: 50 to 75 percent of polypropylene, 5 to 20 percent of low-density polyethylene, 5 to 15 percent of a toughening agent, 4 to 12 percent of a filling agent, 3 to 8 percent of glassfiber powder, 0.3 to 1 percent of a stabilizing agent and 0.2 to 2 percent of a lubricating agent. According to the invention, the polypropylene is used as a base material, and the low-density polyethylene, the glass fiber powder and the filling agent are added, so that the prepared polypropylene composite material has the characteristics of low density and low shrinkage, and meets the requirementof light weight.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a polypropylene composite material and a preparation method thereof. Background technique [0002] With the development of the automobile industry and the improvement of people's living standards, the requirements for energy conservation and environmental protection are also getting higher and higher. The design and application of automobile lightweight concept has become a trend and trend. On the premise of ensuring the safety and comfort of the car, rely on lightweight technology to reduce the weight of the car as much as possible to achieve high output rate, low noise, low vibration, good maneuverability, and high reliability. [0003] The current methods of automobile lightweight include lightweight materials, lightweight technology and lightweight design. As a thermoplastic resin with light weight, low price, chemical resistance, easy processing and excellent c...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/06C08L23/08C08K7/14C08K3/34C08K13/04
CPCC08L23/14C08K2201/016C08L2205/02C08L2205/03C08L23/06C08L23/0815C08K7/14C08K3/34C08K13/04
Inventor 熊金标林经萍杨海民黄方雁刘鹏辉汪洋苏杜敏贾似海
Owner GUANGDONG JUSHI CHEM CO LTD
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