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High-strength and high-toughness long carbon fiber reinforced nylon composite and preparation method thereof

A nylon composite material and long carbon fiber technology, applied in the field of polymer materials, can solve the problems of high melt viscosity, difficulty in fully impregnating nylon resin, low nylon fluidity, etc., and achieve the effect of preventing the decline of mechanical properties

Inactive Publication Date: 2017-05-17
SHANGHAI PRET COMPOSITES +4
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the low fluidity of nylon in the production process of long carbon fiber reinforced nylon, and the high melt viscosity makes it difficult to fully impregnate carbon fibers with nylon resin, and provide a modification method for improving the fluidity and impact strength of nylon. The present invention can Prepared modified nylon materials with excellent fluidity, compatibility, rigidity and toughness

Method used

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  • High-strength and high-toughness long carbon fiber reinforced nylon composite and preparation method thereof
  • High-strength and high-toughness long carbon fiber reinforced nylon composite and preparation method thereof

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Embodiment 1～2

[0026] This embodiment relates to a high-strength and high-toughness long carbon fiber reinforced nylon material and a preparation method thereof, the method is as follows:

[0027] Step 1, weighing the raw materials according to the weight ratio, each component and its data are shown in Table 1;

[0028] Step 2, put the raw materials weighed according to the weight ratio into a high-mixer and mix for 1 to 5 minutes, discharge the materials, and then use an extruder to extrude and granulate. The specific steps are as follows:

[0029] The first step: Add nylon, antioxidant and lubricant into the extruder in proportion, and after being plasticized by the extruder, transport it to the high-temperature melt impregnation cavity. The internal temperature of the high-temperature impregnation cavity is 300-330°C , The temperature of the screw extruder is 280-300°C. Among them, nylon 6 is provided by Ruimeifu Company, the brand is MF800; nylon 610 is provided by DuPont Company, the b...

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Abstract

The invention discloses a high-strength and high-toughness long carbon fiber reinforced nylon composite and a preparation method thereof. The nylon composite is prepared from the following raw materials in parts by weight: 40 to 80 parts of nylon 610, 20 to 30 parts of nylon 6, 20 to 60 parts of long carbon fiber, 0.5 to 1 part of lubricant and 0.1 to 1.5 parts of antioxidant. The high-strength and high-toughness long carbon fiber reinforced nylon composite provided by the invention has the advantages that firstly, long carbon chain nylon is selected as a nylon base material and has low water absorption and high toughness; secondly, the high rigidity of long carbon fiber makes up the insufficient rigidity of nylon 610 and nylon 6; thirdly, the viscosity of a nylon melt can be greatly reduced by adding the lubricant so as to improve the impregnation effect of nylon on carbon fiber; finally, 4, a toughening agent does not need to be added, so that the effect of reduction in mechanical property caused by addition of the toughening agent is avoided.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-strength and high-toughness long carbon fiber reinforced nylon material and a preparation method thereof. Background technique [0002] Long carbon fiber reinforced nylon is a composite material that is different from short carbon fiber reinforced nylon. Due to the difference in carbon fiber length, in the case of the same fiber content, long carbon fiber reinforced nylon has higher carbon fiber reinforced nylon than short carbon fiber reinforced nylon. Strength, modulus, toughness and better dimensional stability. [0003] There are two main factors affecting the physical properties of long carbon fiber reinforced nylon materials: 1. The interface bonding state between nylon and carbon fiber has a great influence on its performance; 2. The fluidity of polymer melt affects the impregnation state of nylon resin and carbon fiber. Thus affecting the physical proper...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L77/02C08L77/00C08K9/06C08K7/06B29C47/92B29C48/92
CPCC08L77/06B29C48/92B29C2948/9258B29C2948/92704C08K2201/003C08L2205/03C08L77/02C08L77/00C08K9/06C08K7/06
Inventor 张杨陈永东张祥福周文
Owner SHANGHAI PRET COMPOSITES
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