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Nylon composite for fuel tank and preparation method of nylon composite

A technology of nylon composite materials and fuel tanks, applied in the field of nylon products, can solve problems such as unadaptable, unsatisfactory, and difficult to achieve fuel permeability

Active Publication Date: 2019-08-02
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

The nylon material prepared by the above-mentioned technical scheme has a fuel permeability that is difficult to reach 2 g / 24 hours stipulated in the national standard "GB 20998-2007 Motorcycle and Moped Fuel Evaporative Pollutant Emission Limits and Measurement Methods", and cannot adapt to market demands. In addition, its low-temperature impact resistance is equivalent to or only 1-2 times higher than that of ordinary PA6, which cannot meet the requirements of motorcycle fuel tank materials that withstand high vibrations in severe cold weather conditions

Method used

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  • Nylon composite for fuel tank and preparation method of nylon composite
  • Nylon composite for fuel tank and preparation method of nylon composite
  • Nylon composite for fuel tank and preparation method of nylon composite

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A kind of nylon composite material for fuel tank, its preparation raw material comprises the following components by weight percentage:

[0026]

[0027] PA6T copolymer is PA6T and PA6 copolymer that the content of PA6T is 80%, modifier is HDPE, and elastomer is SEBS, and auxiliary agent is phosphite antioxidant, calcium stearate and CAV102 with weight ratio 1: 1:1 mixture.

[0028] The preparation method of the nylon composite material for this fuel tank is:

[0029] 1) Add PA6, PA6T copolymer, modifier, and elastomer into a high-speed mixer, drop in white mineral oil, and mix for 2 minutes;

[0030] 2) Add the additives into the high-speed mixer and mix for 2 minutes to obtain the blended material;

[0031] 3) Add the blended material obtained in step 2) into a twin-screw extruder, and after mixing, melt and extrude at a temperature of 265°C and a rotation speed of 150r / min;

[0032] 4) After cooling, cut into pellets, sieve and pack.

[0033] The components an...

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Abstract

The invention provides a nylon composite for a fuel tank and a preparation method of the nylon composite. The nylon composite for the fuel tank is prepared from raw materials in percentage by weight as shown in the description, wherein the PA6T copolymer is a PA6T and PA6 copolymer with PA6T content not lower than 70%, a modifier is selected from at least one of HDPE and HDPE-MAH and an elastomeris selected from at least one of SEBS and SEBS-MAH. The PA6T copolymer has better heat resistance and can obviously reduce the fuel permeability of the material, meanwhile, the PA6T with the content not lower than 70% can effectively block permeation and diffusion speeds of fuel molecules. The HDPE and HDPE-MAH modifier can improve melt strength of the PA6 and PA6T copolymer at low temperature, sothat the formed fuel tank has higher impact strength at low temperature. The SEBS and SEBS-MAH elastomer can improve compatibility of the PA6 and PA6T copolymer and the modifier, the PA6 and PA6T copolymer can be well compatible with the modifier, and various excellent properties of the nylon composite of the fuel tank are guaranteed.

Description

technical field [0001] The invention relates to nylon products, in particular to a nylon composite material for a fuel tank and a preparation method thereof. Background technique [0002] Modern automobiles and motorcycles increase the speed per hour and reduce energy consumption. The main countermeasure is to use lighter engineering plastics instead of heavy metal materials to make motorcycle parts. Fuel tank is an important part of automobiles and motorcycles. It is used to store fuel oil. It is important for automobiles and motorcycles to achieve the above goals by using lightweight engineering plastic polyethylene materials or high-performance polymer materials instead of metal materials to manufacture fuel tanks. meaning. [0003] The main material of the polyethylene fuel tank is high-density polyethylene (HDPE), and prior art such as CN1075489A, CN1036465C, CN1036596C, CN101081543A etc. Compared with metal fuel tanks, it has excellent properties such as light weight...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L77/06C08L23/06C08L51/06C08L51/00C08L53/02C08L91/06C08L83/04C08K13/02C08K5/098C08K5/20C08K3/16
CPCC08L77/02C08L77/06C08L2207/062C08L2205/02C08L2205/035C08L2205/24C08K2201/014C08L23/06C08L53/025C08L91/06C08K5/098C08L51/06C08L51/006C08L83/04C08K13/02C08K5/20C08K3/16
Inventor 杨冬李东阵张海春
Owner 辰东意普万新材料(广东)有限公司
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