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Long glass fiber enhanced polypropylene composite material and preparation method thereof

A composite material and polypropylene technology, applied in the field of long glass fiber reinforced polypropylene composite material and its preparation, can solve the problems of poor reinforcement effect and short glass fiber aspect ratio, and achieve high dimensional stability, balanced mechanical properties, low creep effect

Inactive Publication Date: 2014-05-07
徐东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, provide a kind of long glass fiber reinforced polypropylene composite material and its preparation method, to solve the glass fiber aspect ratio in the existing glass fiber reinforced PP composite material which causes its short Technical issues with poor enhancements

Method used

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  • Long glass fiber enhanced polypropylene composite material and preparation method thereof
  • Long glass fiber enhanced polypropylene composite material and preparation method thereof
  • Long glass fiber enhanced polypropylene composite material and preparation method thereof

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preparation example Construction

[0024] Correspondingly, the embodiment of the present invention also provides a method for preparing the above-mentioned long glass fiber reinforced polypropylene composite material, the method comprising the following steps:

[0025] S01. Weigh the corresponding components: Weigh the polypropylene, compatibilizer lubricant and antioxidant components respectively according to the component content of the above-mentioned long glass fiber reinforced polypropylene composite material;

[0026] S02. Perform mixing treatment on the corresponding components: perform mixing treatment on the polypropylene, compatibilizer lubricant and antioxidant to obtain a mixed material;

[0027] S03. Disperse the long glass fibers in the molten mixture material and perform impregnation treatment to prepare long glass fiber reinforced polypropylene composite materials: melt the mixture material using an extruder and place it in the impregnation system, and then add long glass fibers to the impregnati...

Embodiment 1

[0037] A preparation method of long glass fiber reinforced polypropylene composite material:

[0038] Mix PP with a weight ratio of 65% (the following are weight ratios), long glass fiber EDR17-2400-362K30%, compatibilizer 8010-MAH4%, antioxidant 0.5%, and lubricant 0.5% to mix evenly. Put the mixed materials into the hopper of the twin-screw extruder, the melted polypropylene and other raw materials are conveyed to the impregnation system of the machine head by the screw, and the long glass fibers enter the impregnation system from the die head, and pass through the impregnation system The surface is provided with chamfered protruding corners of the "product"-shaped rollers, and the long glass fibers are fully dispersed in the PP mixed melt and then drawn, cooled and granulated. Among them, the temperature of the first zone of the twin-screw extruder is 175-200°C, the temperature of the second zone is 180-210°C, the temperature of the third zone is 180-210°C, the temperature ...

Embodiment 2

[0041] A preparation method of long glass fiber reinforced polypropylene composite material:

[0042] The weight ratio of PP is 60% (the following are weight ratios), long glass fiber EDR17-2400-362K30%, compatibilizer 8010-MAH4%, antioxidant 0.5%, lubricant 0.5%. Put the mixed materials into the hopper of the twin-screw extruder, the melted polypropylene and other raw materials are conveyed to the impregnation system of the machine head by the screw, the long glass fiber enters the impregnation system from the die head, and the long glass fiber enters the impregnation system from the die head After entering the impregnation system, the long glass fibers are fully dispersed in the PP mixed melt by the "pin"-shaped rollers with chamfered raised corners on the surface of the impregnation system, and then drawn, cooled, and granulated. Among them, the temperature of the first zone of the twin-screw extruder is 175-200°C, the temperature of the second zone is 180-210°C, the temper...

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Abstract

The invention discloses a long glass fiber enhanced polypropylene composite material and a preparation method of the long glass fiber enhanced polypropylene composite material. The long glass fiber enhanced polypropylene composite material comprises the following components in percent by weight: 40-65 percent of polypropylene, 30-50 percent of glass fiber, 4-7 percent of a compatilizer, 0.5-1.5 percent of an antioxidant and 0.5-1.5 percent of a lubricating agent. The preparation method comprises the following steps: correspondingly mixing the polypropylene, the compatilizer, the lubricating agent and the antioxidant, dispersing long glass fibers in the fused and mixed materials for performing impregnation treatment, and preparing the long glass fiber enhanced polypropylene composite material. The long glass fiber enhanced polypropylene composite material provided by the invention is balanced in mechanical property, is particularly high in impact strength and has low shrinkage, high dimensional stability, low warpage, small anisotropism, low creep and high dynamic fatigue resistance. According to the preparation method, the long glass fibers can be effectively dispersed, and the length of the long glass fibers is kept.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a long glass fiber reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene (PP) has good toughness and poor rigidity at room temperature, so it cannot be used in fields that require high rigidity, and its application is limited. After reinforcing PP with glass fiber, the mechanical properties of the material, especially the tensile strength, flexural strength and flexural modulus, are significantly improved, which largely makes up for the disadvantage of poor rigidity of PP. It is widely used in electronic appliances, home appliances and automotive and other fields. [0003] As we all know, in glass fiber reinforced PP composite materials, the longer the length of the glass fiber, that is, the larger the aspect ratio of the glass fiber, the more obvious its reinforcing effect as a reinforcing material. S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K7/14B29C47/92B29C48/92
CPCB29B9/14B29B7/46B29B7/72B29B7/90B29B9/06B29B9/12B29C48/875B29C48/92B29C2948/92514B29C2948/9258B29C2948/92638B29C2948/92695B29C2948/92704B29C2948/92895B29C2948/92904B29C2948/92933C08L23/12C08K2201/004C08L51/06C08K7/14
Inventor 马旭辉
Owner 徐东
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