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Reinforced polypropylene material and preparation method thereof

A polypropylene material and polypropylene technology, applied in the field of reinforced polypropylene material and its preparation, can solve the problems of poor low-temperature toughness, poor light aging resistance and heat aging performance, and inability to use for a long time, and achieve low-temperature toughness and long-term weather resistance Improve and meet the effect of long-term use requirements

Pending Publication Date: 2020-08-14
KINGFA SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional glass fiber reinforced polypropylene materials have defects such as poor light aging resistance and heat aging performance, poor low temperature toughness, etc., and cannot be used for a long time in harsh environments.

Method used

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  • Reinforced polypropylene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8 and comparative example 1-6

[0052] Examples 1-8 and Comparative Examples 1-6: Preparation of reinforced polypropylene materials

[0053] Weigh each component according to the formula content, and mix all components except the reinforcing fiber evenly, then add the mixture to the main feeding system of the twin-screw extruder; at the same time, add the reinforcing fiber to the side feeding of the twin-screw extruder material system, and then through twin-screw extruder melt blending, extrusion granulation to prepare reinforced polypropylene material.

[0054] The position of the side feeding system of the extruder can be adjusted, and the reinforcing fiber can enter the extruder screw in the first to tenth zones, and can be added after the extruder die, and then directly combined with the polypropylene melt.

[0055] Among them, the temperature of the first to second zones of the extruder is 120°C-160°C, the temperature of the third to fifth zones is 180°C-300°C, the temperature of the fifth to tenth zone...

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Abstract

The invention discloses a reinforced polypropylene material which comprises the following components in parts by weight: a, 10-90 parts of polypropylene resin, b, 0.5 to 25 parts of a compatilizer, c,5 to 60 parts of reinforced fibers, and d, 0.1 to 20 parts of low-hardness toner, wherein the reinforced fibers comprise a component I, a component II and a component III, the component I is composedof reinforced fibers with the length of 0.1-0.6 mm and accounts for 35-50% of the number of the reinforced fibers, the component II is composed of reinforced fibers with the length of 0.7-1.3 mm andaccounts for 35-45% of the number of the reinforced fibers, and the component III is composed of reinforced fibers with the length of 1.4-2.0 mm and accounts for 5-20% of the number of the reinforcedfibers. According to the invention, the length and content distribution of the reinforced fibers are adjusted in the formula of the reinforced polypropylene material, according to the reinforced polypropylene material, the retention length of reinforced fibers is greatly maintained in the reinforced polypropylene material, and the low-temperature toughness and the long weather resistance of the obtained reinforced polypropylene material are obviously improved by combining the low-hardness toner with a specific content and supplementing the compatilizer with a specific content.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to a reinforced polypropylene material and a preparation method thereof. Background technique [0002] Polypropylene material is currently the most used polymer material. It has excellent processing properties and mechanical properties. It is widely used in daily life and industrial production fields, such as: agricultural film, wire and cable, communication, housing construction and aviation manufacturing. Wait. [0003] Conventional reinforced polypropylene materials usually use glass fiber as a reinforcing medium, and use the high strength and high rigidity of glass fiber to improve product strength and heat resistance. However, conventional glass fiber reinforced polypropylene materials have defects such as poor light aging resistance and heat aging performance, poor low temperature toughness, etc., and cannot be used for a long time in harsh environments. [0004...

Claims

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Application Information

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IPC IPC(8): C08L53/00C08L23/12C08L23/14C08L51/06C08K13/04C08K7/14C08K7/10C08K3/22C08J5/04
CPCC08J5/043C08K2201/003C08K2201/009C08K2003/2241C08K2003/2296C08K3/2279C08J2353/00C08J2323/12C08J2323/14C08J2451/06C08K13/04C08K7/14C08K7/10C08J5/0405C08J5/047C08J2323/10C08L23/10C08K2201/014C08K2201/004C08L51/06C08K3/013B29C48/022B29C48/04B29C48/40B29K2023/12B29K2105/12
Inventor 陆湛泉黄险波叶南飚程书文关安南刘乐文杨霄云
Owner KINGFA SCI & TECH CO LTD
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