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Special nylon 66 composition for automobile engine hood and preparation method thereof

A technology of automobile engine and composition, which is applied in the field of special nylon 66 composition for automobile engine cover and its preparation, which can solve the problems of affecting product appearance and painting performance, difficulty in ensuring sealing performance, and easy warping of products, etc., and achieves excellent performance. Chemical properties and dimensional stability, high impact resistance, high ultra-high strength effect

Active Publication Date: 2013-09-11
辰东意普万新材料(广东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the nylon 66 of the automobile engine cover is mostly modified nylon reinforced with glass fiber. The uneven distribution of orientation has a great influence on the shrinkage rate, and the product is prone to warping. The orientation of the original design installation hole of the mold will be offset on the injection molded product, which makes the installation quite difficult, and it is difficult to ensure good quality during use. tightness

Method used

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  • Special nylon 66 composition for automobile engine hood and preparation method thereof
  • Special nylon 66 composition for automobile engine hood and preparation method thereof
  • Special nylon 66 composition for automobile engine hood and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: A special nylon 66 composition for an automobile engine cover, containing components and the mass percentages of each component are:

[0029] Nylon 66 60.9%,

[0030] Nylon copolymer 5%,

[0031] Alkali-free short glass fiber 30%,

[0032] Auxiliary

[0033]

[0034] The copolymerized nylon is nylon 6 / 66 copolymer.

[0035] The auxiliary agent contains heat stabilizer, lubricant and dyeing agent.

[0036] The preparation method of above-mentioned special-purpose nylon 66 composition for automobile engine cover, comprises the steps:

[0037] 1) Weigh nylon 66, copolymerized nylon, alkali-free short glass fiber and additives according to the weight percentage of each component in the formula;

[0038] 2) Put nylon 66, copolymerized nylon and additives into a high-speed mixer and mix at high speed to obtain a blended material;

[0039] 3) Put the alkali-free short glass fiber and the blended material obtained in step 2) into the co-rotating twin-scre...

Embodiment 2

[0040] Embodiment 2: A special nylon 66 composition for an automobile engine cover, containing components and the mass percentages of each component are:

[0041] Nylon 66 49.9%,

[0042] Copolymer Nylon 10%,

[0043] Alkali-free short glass fiber 35%,

[0044] Auxiliary

[0045]

[0046] The copolymerized nylon is nylon 6 / 12 copolymer.

[0047] The auxiliary agent contains heat stabilizer, lubricant and dyeing agent.

[0048] The preparation method of above-mentioned special-purpose nylon 66 composition for automobile engine cover, comprises the steps:

[0049] 1) Weigh nylon 66, copolymerized nylon, alkali-free short glass fiber, mineral filler and additives according to the weight percentage of each component in the formula;

[0050] 2) Put nylon 66, copolymerized nylon and additives into a high-speed mixer and mix at high speed to obtain a blended material;

[0051] 3) Put the alkali-free short glass fiber and the blended material obtained in step 2) into the co-r...

Embodiment 3

[0052] Embodiment 3: A special nylon 66 composition for an automobile engine cover, containing components and the mass percentages of each component are:

[0053] Nylon 66 46.9%,

[0054]Copolymer Nylon 15%,

[0055] Alkali-free short glass fiber 35%,

[0056] Auxiliary

[0057]

[0058] The copolymerized nylon is nylon 6 / 10 copolymer.

[0059] The auxiliary agent contains heat stabilizer, lubricant and dyeing agent.

[0060] The preparation method of above-mentioned special-purpose nylon 66 composition for automobile engine cover, comprises the steps:

[0061] 1) Weigh nylon 66, copolymerized nylon, alkali-free short glass fiber and additives according to the weight percentage of each component in the formula;

[0062] 2) Put nylon 66, copolymerized nylon and additives into a high-speed mixer and mix at high speed to obtain a blended material;

[0063] 3) Put the alkali-free short glass fiber and the blended material obtained in step 2) into the co-rotating twin-scre...

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Abstract

The invention provides a special nylon 66 composition for an automobile engine hood. The composition contains the following components by weight percent: 18-79% of nylon 66, 5-20% of copolymer nylon or long-chain nylon, 15-35% of alkali-free short glass fiber, 0-20% of mineral filler and 1.0-7% of auxiliaries, wherein the copolymer nylon is a polymer which is prepared through reaction, dehydration and polymerization of two or more monomer units, contains an amide group and is selected from one of or the mixture of more of a nylon6 / 66 copolymer, a nylon 6 / 12 copolymer and a nylon 6 / 10 copolymer; and the long-chain nylon is a polymer which is prepared through polymerization of monomers with carbon contents greater than or equal to 10 in polymer monomer units and other monomer units, contains an amide group and is selected from one of or the mixture of more of a nylon 11, a nylon 12 and a nylon 1010. The invention provides the special nylon 66 composition for the automobile engine hood and a preparation method thereof. The composition has the beneficial effects that the composition has quite high impact resistance and super strength and excellent chemical properties and dimensional stability; and products have smooth and clean surfaces and are cheap.

Description

technical field [0001] The invention relates to the technical field of special materials for automobile engine covers, in particular to a special nylon 66 composition for automobile engine covers and a preparation method thereof. Background technique [0002] As the largest plastic part on a car, the automobile engine cover has high requirements on its apparent dimensional stability, and as a peripheral part of the engine, it must also have good thermal stability and impact resistance. At present, the nylon 66 of the automobile engine cover is mostly modified nylon reinforced with glass fiber. The uneven distribution of orientation has a great influence on the shrinkage rate, and the product is prone to warping. The orientation of the original design installation hole of the mold will be offset on the injection molded product, which makes the installation quite difficult, and it is difficult to ensure good quality during use. of tightness. The engine cover is a key part of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08L83/04C08K13/06C08K9/06C08K7/14C08K5/20
Inventor 高原梁效礼杨冬黄俊辉
Owner 辰东意普万新材料(广东)有限公司
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