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nylon composite

A nylon composite material and nylon technology, applied in the field of nylon composite materials, can solve problems such as insignificant reinforcement effect, decreased gloss, and large equipment loss, and achieve the goal of overcoming poor dimensional stability of materials, improving strength and toughness, and reducing loss costs Effect

Active Publication Date: 2017-12-29
广东华聚科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modification methods currently used are very targeted, and some properties cannot be taken into account
Glass fiber is cheap, its strength and Young's modulus are 10 times larger than nylon resin, its water absorption is very low, its heat resistance, chemical resistance and mechanical properties are excellent, it is an ideal engineering reinforcement material, but when the glass fiber content When it exceeds 40%, its reinforcing effect becomes inconspicuous, but the ductility decreases, and floating fibers appear on the surface, and the gloss decreases, etc.
At the same time, the higher the glass fiber content is added, the greater the loss of equipment, resulting in higher hidden costs

Method used

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preparation example Construction

[0030] Also provide a kind of preparation method of nylon composite material in one embodiment of the present invention, comprise the steps:

[0031] S110, weighing and drying the raw materials according to the above weight percentage, wherein the drying condition of the nylon resin is 4-8 hours at 80-100°C;

[0032] S120. Evenly mix the dried nylon resin, modified nano boehmite, compatibilizer, lubricant and antioxidant into the hopper of the twin-screw extruder, and feed it in the side of the twin-screw extruder Add chopped glass fiber at the feed port and extrude;

[0033] For example, add the dried nylon resin, modified nano-boehmite, compatibilizer, lubricant and antioxidant into a high-speed mixer and mix for 15-20 minutes to mix the raw materials evenly before adding them to the twin-screw extruder.

[0034] Specifically, the process conditions of the twin-screw extruder are set as follows: the temperature of the first zone is 200-220°C, the temperature of the second z...

Embodiment 1

[0049] Nylon composite material in the embodiment of the present invention 1 comprises the following components in the following weight percentages:

[0050] Nylon 6: 57.4%, chopped glass fiber: 35%, modified nano boehmite: 5%, compatibilizer: 2%, lubricant: 0.3%, antioxidant: 0.3%.

[0051] The preparation method of nylon composite material in the embodiment of the present invention 1, comprises the following steps:

[0052] Nylon 6 was dried at 100°C for 6 hours, and nano-mica was dried at 100°C for 8 hours. Stir the dried nylon 6, modified nano-boehmite, compatibilizer, lubricant, and antioxidant in a high-speed mixer for 3 minutes, then add it to the hopper of the twin-screw extruder, and put it on the side of the twin-screw extruder Add chopped glass fiber to the feed opening. The process conditions of the twin-screw extruder are set as follows: the temperature of the first zone is 200-220°C, the temperature of the second zone is 220-240°C, the temperature of the third ...

Embodiment 2

[0054] The glass fiber reinforced nylon composite material in Example 2 of the present invention includes the following components in weight percentage:

[0055] Nylon 6: 46.4%, chopped glass fiber: 35%, modified nano boehmite: 15%, compatibilizer: 3%, lubricant: 0.3%, antioxidant: 0.3%.

[0056] The preparation method of the glass fiber reinforced nylon composite material in Example 2 of the present invention is the same as that in Example 1.

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Abstract

The invention relates to a nylon composite material which comprises the following components in percentage by weight: 24.4-57.4% of nylon resin, 35-60% of chopped glass fiber, 5-15% of modified nano boehmite, 2-5% of compatilizer, 0.1-1% of lubricant and 0.1-1% of antioxidant. The glass-fiber-reinforced nylon composite material has the characteristic of high strength. The modified nano boehmite and glass fibers are used for synergic reinforcement, thereby maintaining the advantages of the glass-fiber-reinforced nylon composite material, enhancing the strength and toughness of the material, overcoming the defects of poor dimensional stability and surface defects of the material due to high glass fiber content and having small influence on the material color. The nylon composite material has the advantages of excellent mechanical properties and favorable flowability, and is applicable to manufacturing of machines and automobile parts in need of high strength.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a nylon composite material. Background technique [0002] Nylon (Nylon), scientific name Polyamide (Polyamide), referred to as PA, refers to the general term for thermoplastic resins with amide groups (—NHCO—) repeating structural units on the polymer chain. Although there are many types of polyamides, they are mainly prepared by two methods, one is prepared by the polycondensation reaction between the functional groups of dicarboxylic acids and diamines; the other is prepared by ring-opening with caprolactam or ω-aminocaproic acid aggregated. With the development of society, engineering plastics have been widely used in automobile manufacturing, electronics, aerospace and other industries, but the use environment of engineering plastics will become more and more harsh, such as high temperature, high voltage, high humidity, high load, chemical Reagents, etc., have hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08L77/00C08L51/00C08K13/06C08K9/04C08K3/22C08K7/14B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704C08K2201/003C08K2201/004C08K2201/011C08L77/02C08L2205/03C08L2205/08C08L51/00C08K13/06C08K9/04C08K2003/2227C08K7/14
Inventor 刘典典冉进成官炳荣官炳桂
Owner 广东华聚科技有限公司
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