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High performance fiber reinforced nylon composite material and preparation thereof

A nylon composite material and high-performance fiber technology, applied in the field of polymer materials, can solve the problems of high price and difficulty of pure carbon fiber reinforced nylon, and achieve the effect of high mechanical strength and simple operation

Inactive Publication Date: 2009-04-22
GUANGDONG HIGH & NEW ENG PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while carbon fiber has high performance, the price is relatively expensive, and it is still subject to certain restrictions in civilian use, making it difficult for pure carbon fiber reinforced nylon to be widely used because of the price.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] Preparation method of high-performance fiber-reinforced nylon composite material:

[0016] 1): Weigh the raw nylon resin according to the weight ratio, and dry it in an oven;

[0017] 2): surface-treating the material obtained in step (1), adding an antioxidant, a toughening agent and a processing aid, and then stirring and mixing evenly in a high-speed blender;

[0018] 3): mixing long fiber A and long fiber B according to a certain ratio, and performing surface treatment on the mixed fiber with a coupling machine;

[0019] 4): The material obtained in step (2) is fed into the twin-screw extruder through the feeder, and the speed of the feeder is 200-250r.p.m; Add the mixed fiber obtained by step (3) into the mouth; the temperature of the twin-screw extruder from the feeding port to the machine head is between 230-280°C, and the rotating speed is 180-280r.p.m. The inside is subjected to compound treatments such as shearing and melting.

[0020] 5): The material obta...

Embodiment 1

[0024] 1): Weigh 55 parts of raw material nylon 6 resin according to the weight ratio, and dry in an oven;

[0025] 2): after surface treatment of the material obtained in step (1), add 0.3 parts by weight of antioxidant, 5 parts by weight of toughening agent and 0.5 parts by weight of processing aid, and stir and mix evenly in a high mixer;

[0026] 3): the long fiber A and the long fiber B are mixed in a ratio of 3:1, and the mixed fiber is surface-treated with a coupling machine;

[0027] 4): The material obtained in step (2) is sent into the twin-screw extruder through the feeder, and the rotating speed of the feeder is 200r.p.m; The mixed fibers obtained through the step (3) make the mixed fiber parts by weight 40 parts; the temperature of the twin-screw extruder from the feeding port to the machine head is respectively at 230°C, 240°C, 245°C, 245°C, 245°C, 240°C, 240°C, the rotation speed is 250r.p.m, and the mixture is subjected to compound treatments such as shearing ...

Embodiment 2

[0031] 1): Weigh 30 parts of nylon 6 resin and 32 parts of nylon 66 resin according to the weight ratio, and dry them in an oven;

[0032] 2): surface-treating the material obtained in step (1), adding 0.5 parts by weight of antioxidant, 8 parts by weight of toughening agent and 0.8 parts by weight of processing aid, and then stirring and mixing uniformly in a high mixer;

[0033] 3): the long fiber A and the long fiber B are mixed in a ratio of 3:1, and the mixed fiber is surface-treated with a coupling machine;

[0034] 4): The material obtained in step (2) is sent into the twin-screw extruder through the feeder, and the rotating speed of the feeder is 220r.p.m; The mixed fibers obtained through the step (3) make the mixed fiber parts by weight 30 parts; the temperature of the twin-screw extruder from the feeding port to the machine head is respectively at 250°C, 255°C, 260°C, 260°C, 265°C, 260°C, 260°C, the rotation speed is 230r.p.m, and the mixture is subjected to compou...

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Abstract

The invention discloses a high-performance fiber-reinforced nylon composite material and a preparation method thereof. The components in weight portion of the high-performance fiber-reinforced nylon composite material are: 30 to 80 portions of nylon resin, 10 to 50 portions of fibrous long fiber A, 10 to 30 portions of fibrous long fiber B, 0 to 10 portions of toughening agent, 0.1 to 1 portion of antioxidant and 0.2 to 1.5 portions of processing aid. The preparation method comprises the following steps of mixing, stirring, extruding, granulating, cooling and drying a certain proportion of aforementioned substances. The high-performance fiber-reinforced nylon composite material prepared in the invention has the characteristics of high strength, high modulus and little creep deformation. In contrast, the properties of the composite material are higher than pure glass fiber-reinforced nylon, but the price of the composite material is lower than carbon fiber-reinforced nylon. In addition, the preparation method has the advantage of simple operation, and is suitable for industrial production and application.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-performance fiber-reinforced nylon composite material and a preparation method thereof. Background technique [0002] At present, the reinforcement used in reinforced nylon composites on the market is usually glass fiber. However, with the development of industry and the continuous improvement of product technical requirements, the existing glass fiber reinforced nylon is difficult to meet some special requirements. The appearance of carbon fiber is a revolution in the history of materials. It is currently the world's preferred high-performance reinforcing material. It has many excellent properties such as high strength, high modulus, high temperature resistance, fatigue resistance, electrical conductivity, light weight, and easy processing. It is widely used. It is used in various fields such as aerospace, aviation and military, as well as civil mac...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08K9/06C08J5/04B29B9/06B29B9/14C08L51/00
Inventor 王雄刚曾斌郭庆时张积宾刘淳
Owner GUANGDONG HIGH & NEW ENG PLASTICS
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