Alcoholysis resistance nylon composite material and preparation method thereof

A nylon composite material and alcoholysis-resistant technology, which is applied in the field of nylon composite materials, can solve the problems of reducing the alcoholysis resistance performance, not using it, and difficult to improve the material's resistance to ethylene glycol, so as to achieve good surface finish and reduce molding shrinkage. , the effect of excellent fluidity

Active Publication Date: 2009-12-30
辰东意普万新材料(广东)有限公司
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Problems solved by technology

Yet the selected glass fiber of this invention is not special-purpose alcoholysis-resistant alkali-free short glass fiber; It will lead to chain scission of the polymer, thereby reducing the alcoholysis resistance of the material, so it is difficult to improve the glycol resistance of the material through the combination of the above substances

Method used

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  • Alcoholysis resistance nylon composite material and preparation method thereof

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto.

[0035] Table 1 is the content of each component of the alcoholysis-resistant nylon composite material of Examples 1 to 9, and the nylon is selected from the copolymer (PA66 / PA6) of nylon 66 (PA66), nylon 6 (PA6), nylon 66 and nylon 6 , one of nylon 11 (PA11) or nylon 12 (PA12); the short glass fiber is an alkali-free short glass fiber, which is treated with a silane coupling agent and coated with a silane-type wetting agent on the surface, which is resistant to ethylene glycol Characteristics, the present embodiment 1~9 selects the non-alkali short glass fiber that is produced by Chongqing International Composite Material Co., Ltd., model is ECS301G; The anti-glass fiber exposure adjustment auxiliary agent is selected from silicone powder and ethylene bisfatty acid amide 2~ 1: 1 mixture, the preferred...

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Abstract

The invention provides an alcoholysis resistance nylon composite material and a preparation method thereof; the composite material is applicable to the cooling water chamber of vehicles and comprises nylon, short glass fiber, glass fiber emergence resistance regulating additive, nucleating agent, colorant, heat stabilizer and alcoholysis resistance additive. The physical property of the nylon composite material provided by the invention can meet or exceed the TL52062 technical requirement and the alcoholysis resistance chemical property can meet the TL-VW774 technical requirement so that the surface of the product does not change and crack after being placing in 100% of glycol solution for 48h at 135 DEG C and the product has high shock resistance and dimension stability, thus ensuring that the stress cracking does not appear on joints.

Description

technical field [0001] The invention relates to the field of nylon composite materials, in particular to an alcoholysis-resistant nylon composite material and a preparation method thereof, which are suitable for special materials for automobile cooling water chambers. Background technique [0002] In the production of auto parts, such as: hood, rocker cover, cooling heating device and fuel tank and other parts, nylon plays an increasingly important role instead of metal and thermosetting plastics. This is inseparable from the advantages of nylon itself, such as: high temperature resistance, oil resistance, chemical corrosion resistance, high tensile strength and modulus, relatively low density and low production cost. [0003] However, with the increase of temperature and the presence of chemical corrosion, the mechanical properties of nylon are significantly reduced, and the dimensional stability is also affected. In response to this shortcoming, reinforcing materials such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L77/06C08L77/02C08K13/06C08K9/06C08K9/10C08K7/14C08K5/20C08K5/17C08K3/16C08L83/04
Inventor 李广谦
Owner 辰东意普万新材料(广东)有限公司
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