Long glass fiber reinforced nylon composite material and preparation method thereof

A nylon composite material and long glass fiber technology, which is applied in the field of polymer materials, can solve the problems of low elongation at break and the application effect needs to be improved, and achieve the effect that is beneficial to the application.

Active Publication Date: 2015-12-09
绍兴纳岩材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing long glass fiber reinforced nylon composites have the disadvantage of low elongation at break, and this disadvantage will be more obvious in low temperature environment
Therefore, in many applications that require nylon to maintain good tensile strength and elongation at break, the application effect of existing long glass fiber reinforced nylon composite materials still needs to be improved

Method used

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  • Long glass fiber reinforced nylon composite material and preparation method thereof

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preparation example Construction

[0050] Correspondingly, the present invention also provides a preparation method of long glass fiber reinforced nylon composite material, comprising:

[0051] The material mixture is prepared by a melting method to obtain a long glass fiber reinforced nylon composite material;

[0052] The material mixture comprises:

[0053] 30wt%~65wt% nylon;

[0054]30wt%~60wt% long glass fiber;

[0055] 0.05wt%~10wt% metal salt or metal complex;

[0056] 0.1wt%~1wt% antioxidant;

[0057] 0.2wt% ~ 1wt% stabilizer;

[0058] 0.2wt% ~ 1wt% lubricant.

[0059] The present invention can effectively improve the tensile strength and elongation at break of the nylon material through the interaction between the metal ion in the metal salt or the metal complex and the polar group of the nylon polymer. A new path is provided.

[0060] In the embodiment of the present invention, according to the above weight percentage, the material mixture is put into the equipment for production by the melting...

Embodiment 1

[0073] Nylon 6 was vacuum-dried at a temperature of 110° C. for 6 hours.

[0074] With 61.5wt% vacuum-dried nylon 6, 2wt% lithium nitrate, 0.5wt% diphenylamine, 0.4wt% benzotriazole Tinuvin326 light stabilizer, 0.1wt% PolyAdHS02 thermal stabilizer and 0.5wt% % of polydimethylsiloxane (purchased from Toshiba, Japan) was sequentially added into a high mixer for mixing, the temperature was controlled at 60°C, and the mixing time was 10 minutes to obtain a mixture.

[0075] Put the mixture into a twin-screw extruder for melt extrusion to obtain a melt. The temperature of the twin-screw extruder has eight sections in total. The extrusion temperature of the first section is 210° C., and the second section is 220°C, the third stage is 230°C, the fourth stage is 240°C, the fifth, sixth and seventh stages are all 250°C, the melt temperature is 240°C, the head temperature is 235°C, and the speed of the main engine is 400r / min.

[0076] The melt is extruded into the impregnation mold,...

Embodiment 2

[0082] With 44wt% nylon 6, 50wt% long glass fiber, 5wt% lanthanum chloride (molecular formula is LaCl3, water content is less than 1%), 0.2wt% 2,6-tertiary butyl-4-methylphenol , 0.2wt% benzophenone KAIYUE / UV-531 light stabilizer, 0.2wt% PolyAdHS02 heat stabilizer and 0.4wt% polydimethylsiloxane (purchased from Toshiba, Japan) as raw material components, Following the same steps as in Example 1, a long glass fiber reinforced nylon composite material was obtained.

[0083] After the composite material was obtained, the mechanical properties of the sample were tested according to the method described above. The test results are shown in Table 1, and the results show that the composite material has good tensile properties.

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Abstract

The invention provides a long glass fiber reinforced nylon composite material and a preparation method thereof. The method comprises the following step of: preparing a material mixture through a fusion method to obtain the long glass fiber reinforced nylon composite material, wherein the material mixture comprises the following materials in percentage by weight: 30wt%-65wt% of nylon, 30wt%-60wt% of long glass fibers, 0.05wt%-10wt% of metal salt or metal complexes, 0.1wt%-1wt% of antioxidants, 0.2wt%-1wt% of stabilizing agents and 0.2wt%-1wt% of lubricating agents. According to the invention, the long glass fiber reinforced nylon composite material is modified by adopting the metal salt or the metal complexes and controlling the usage amount of the materials, complexing coordination interaction can be formed between amide groups contained in the nylon and metal ions contained in the metal salt or the metal complexes, so that the hydrogen-bond interaction between the molecular chains of the nylon is influenced, a certain good influence can be generated on the tensile property of the long glass fiber reinforced nylon composite material, and the application is facilitated.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a long glass fiber reinforced nylon composite material and a preparation method thereof. Background technique [0002] Polyamide resin (referred to as PA, commonly known as nylon) is a kind of chemical raw material with excellent comprehensive performance and wide application. Nylon materials are suitable for glass fiber and / or other filler filling for reinforcement modification, which is widely used in electronics, machinery, automobile and textile industries. [0003] Glass fiber reinforced nylon composite material is referred to as glass fiber reinforced nylon composite material, which has been studied as early as the 1950s. Glass fiber reinforced nylon composite materials can be prepared by two methods: melting method and solution method. Among them, the more commonly used melting method is to turn nylon into a melt by heating and then bond it with glass fibers....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08K13/06C08K9/06C08K7/14
Inventor 王峥任冬友
Owner 绍兴纳岩材料科技有限公司
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