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A continuous long aluminum fiber reinforced polypropylene composite and its preparation method

A technology of aluminum fiber and polypropylene, which is applied in the field of continuous long aluminum fiber reinforced polypropylene composites and its preparation, to achieve the effects of improved comprehensive performance, low warpage and good appearance

Inactive Publication Date: 2015-12-23
SHANGHAI SUNNY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fibers used in the above-mentioned patents are all glass fibers, and there is no report about the continuous long aluminum fiber reinforced polypropylene composite of the present invention

Method used

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  • A continuous long aluminum fiber reinforced polypropylene composite and its preparation method
  • A continuous long aluminum fiber reinforced polypropylene composite and its preparation method
  • A continuous long aluminum fiber reinforced polypropylene composite and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～ Embodiment 4

[0023] Embodiment 1~Example 4 and Comparative Example 1~Comparative Example 4

[0024] Polypropylene is homopolypropylene, continuous long aluminum fiber is alkali-free long aluminum fiber whose surface has been treated with silane coupling agent, glass fiber is alkali-free glass fiber whose surface has been treated with silane coupling agent, and the compatibilizer is horse Toric anhydride grafted polypropylene, the antioxidant is a high molecular weight hindered phenolic antioxidant, and the molecular weight regulator is bis(1-methyl-1-phenylethyl) peroxide. Each raw material was weighed according to the weight percentage shown in Table 1.

[0025] The weight percent (wt%) of each raw material in the table 1 embodiment 1~embodiment 4 and comparative example 1~comparative example 4

[0026]

[0027] Polypropylene, compatibilizer, antioxidant and molecular weight regulator are put into the high mixer and mixed for 5 minutes, and then discharged; The temperature of the tw...

Embodiment 5

[0035] Polypropylene is homopolypropylene, continuous long aluminum fiber is alkali-free long aluminum fiber whose surface has been treated with silane coupling agent, compatibilizer is maleic anhydride grafted polypropylene, and antioxidant is high molecular weight hindered phenolic anti-oxidant. Oxygen agent, molecular weight regulator is bis(1-methyl-1-phenylethyl) peroxide. Take each raw material according to the following weight percentages:

[0036] 54.3% polypropylene, 40% continuous long aluminum fiber, 5% compatibilizer, 0.4% antioxidant, 0.3% molecular weight regulator.

[0037] Polypropylene, compatibilizer, antioxidant and molecular weight regulator are put into the high mixer and mixed for 4 minutes, and then discharged; The temperature of the twin-screw extruder is 240-250°C, the first stage is 240°C, the second stage is 240°C, the third stage is 245°C, the fourth stage is 245°C, the fifth stage is 245°C, the sixth stage is 250°C, the seventh stage is 250°C, and...

Embodiment 6

[0039] Polypropylene is homopolypropylene, continuous long aluminum fiber is alkali-free long aluminum fiber whose surface has been treated with silane coupling agent, compatibilizer is maleic anhydride grafted polypropylene, and antioxidant is high molecular weight hindered phenolic anti-oxidant. Oxygen agent, molecular weight regulator is bis(1-methyl-1-phenylethyl) peroxide. Take each raw material according to the following weight percentages:

[0040] Polypropylene 53.9%, continuous long aluminum fiber 35%, compatibilizer 10%, antioxidant 0.1%, molecular weight regulator 1%.

[0041] Put the polypropylene, compatibilizer, antioxidant and molecular weight regulator into the high mixer and mix for 3 minutes, then discharge; add the premixed material into the twin-screw extruder, and plasticize it through the twin-screw extruder The temperature of the twin-screw extruder is 240-250°C, the first stage is 240°C, the second stage is 240°C, the third stage is 245°C, the fourth s...

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Abstract

The invention discloses a continuous long aluminum fiber reinforced polypropylene composite, which is prepared from the following raw material components in weight percent: 50%-75% of polypropylene, 20%-40% of continuous long aluminum fiber , compatibilizer 2% ~ 10%, antioxidant 0.1% ~ 1%, molecular weight regulator 0.1% ~ 1%. The invention also discloses a preparation method of the continuous long aluminum fiber reinforced polypropylene compound. The mechanical properties and other physical properties of the continuous long aluminum fiber reinforced polypropylene composite of the product of the present invention are better than those of the chopped fiber reinforced composite material. It has high mechanical strength and impact resistance, good appearance and low warpage, and can be used in industry or civil products and many other fields.

Description

technical field [0001] The invention relates to the technical field of aluminum fiber reinforced polypropylene composites, in particular to a continuous long aluminum fiber reinforced polypropylene composite and a preparation method thereof. Background technique [0002] At present, the fibers used for reinforcement of polypropylene (referred to as PP) materials include glass fibers, carbon fibers, stainless steel fibers and so on. Fiber-reinforced PP materials can be divided into two types of reinforcement: chopped fiber reinforcement and continuous long fiber reinforcement. Compared with traditional chopped fiber reinforced pellets, long fiber reinforced thermoplastic composites (LFRTP) have better comprehensive properties. [0003] The average length of fibers in long aluminum fiber reinforced thermoplastic composite products is relatively large, and long aluminum fibers can form a certain network structure in injection molded products, so that the mechanical properties ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L51/06C08K13/06C08K9/06C08K7/06C08K5/14B29B9/06B29C47/92B29C48/92
CPCB29B7/90B29B9/14B29C48/04B29C48/40B29C48/911B29C48/92B29C2948/92704B29C2948/92895
Inventor 郭建鹏陈超杨涛孟成铭金幸苏吉英
Owner SHANGHAI SUNNY