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High-strength wear-resistant composite fender and processing technology thereof

A processing technology and fender technology, applied in transportation and packaging, ink, coating, etc., can solve the problems of limited service life, insufficient wear resistance, high price, etc., and achieve strong waterproof and anti-fouling ability, wear resistance Good, high-intensity effect

Active Publication Date: 2022-04-26
CHANGZHOU NANGUA VEHICLE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of these materials is generally relatively expensive, and it is easy to cause pollution to the environment, which is increasingly inconsistent with the modern green and sustainable development strategy.
[0004] More and more composite fenders for vehicles are made of plastic, but the existing composite fenders made of commonly used plastics have insufficient wear resistance and limited service life

Method used

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  • High-strength wear-resistant composite fender and processing technology thereof
  • High-strength wear-resistant composite fender and processing technology thereof
  • High-strength wear-resistant composite fender and processing technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A processing technology for a high-strength wear-resistant composite fender, comprising the following steps:

[0048] S1: Heat 100 parts of caprolactam to 110°C for heating and melting, vacuumize to remove water until there are no bubbles, add 3 parts of modified cellulose nanocrystals, and vacuum to remove water until there are no bubbles, then add tetrahydrofuran of ethylmagnesium bromide Mixed liquid 1mol / L, heat up to 150°C and continue vacuuming to remove water until there are no bubbles, add bisacylated lactam-1,6-hexamethylenediamine 2mol / kg to react for 25min, then quickly cast into Dry and polymerize at a constant temperature in a mold for 1 hour, and cool to obtain anionic polymerized nylon 6;

[0049] The preparation of modified cellulose nanocrystals comprises the following steps:

[0050] (1) 6.2mmol cellulose nanocrystals were evacuated at 100°C for 48h, under the protection of nitrogen, cellulose nanocrystals, 18.6mmol triethylamine, 18.6mmol toluene dii...

Embodiment 2

[0059] A processing technology for a high-strength wear-resistant composite fender, comprising the following steps:

[0060] S1: Heat 100 parts of caprolactam to 113°C for heating and melting, vacuumize to remove water until there are no bubbles, add 3 parts of modified cellulose nanocrystals, and vacuum to remove water until there are no bubbles, then add tetrahydrofuran of ethylmagnesium bromide Mixed liquid 1mol / L, heat up to 153°C and continue vacuuming to remove water until there are no bubbles, add bisacylated lactam-1,6-hexamethylenediamine 2mol / kg to react for 25min, then quickly cast into Dry and polymerize at a constant temperature in a mold for 1 hour, and cool to obtain anionic polymerized nylon 6;

[0061] The preparation of modified cellulose nanocrystals comprises the following steps:

[0062] (1) 6.2mmol cellulose nanocrystals were evacuated at 102°C for 48h. Under nitrogen protection, cellulose nanocrystals, 18.6mmol triethylamine, 18.6mmol toluene diisocyana...

Embodiment 3

[0071] A processing technology for a high-strength wear-resistant composite fender, comprising the following steps:

[0072] S1: Heat 100 parts of caprolactam to 115°C for heating and melting, vacuumize to remove water until there are no bubbles, add 3 parts of modified cellulose nanocrystals, and vacuum to remove water until there are no bubbles, then add tetrahydrofuran of ethylmagnesium bromide Mixed liquid 1mol / L, heat up to 155°C and continue vacuuming to remove water until there are no bubbles, add bisacylated lactam-1,6-hexamethylenediamine 2mol / kg to react for 25min, then quickly cast into Dry and polymerize at a constant temperature in a mold for 1 hour, and cool to obtain anionic polymerized nylon 6;

[0073]The preparation of modified cellulose nanocrystals comprises the following steps:

[0074] (1) 6.2mmol cellulose nanocrystals were evacuated at 105°C for 48h, under the protection of nitrogen, cellulose nanocrystals, 18.6mmol triethylamine, 18.6mmol toluene diis...

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Abstract

According to the high-strength wear-resistant composite fender and the processing technology thereof provided by the invention, the weight of the high-strength wear-resistant composite fender is reduced through limited added components and technological design, and the composite fender with high strength, good wear resistance and strong waterproof and anti-pollution capabilities is prepared; hydroxyl groups on the surface of the cellulose nanocrystal react with para-isocyanato of caprolactam to modify the cellulose nanocrystal, and caprolactam is adopted for end capping; the interface compatibility among the anionic polymerization nylon 6, the polypropylene and the hollow glass beads is improved through the modified cellulose nanocrystals, and the modified PP layer is prepared through a microcellular foaming injection molding process; the adding amount of the hollow glass beads is limited; low-density polyethylene, a fluorine-containing hyperbranched polymer, modified cellulose nanocrystals and polyphenylene sulfide are blended and extruded to obtain protective slurry, the two sides of the modified PP layer are coated with the protective slurry to form protective layers, the surface hydrophobicity of the composite fender is improved, the composite fender has the anti-fouling and waterproof functions, and the service life of the composite fender is greatly prolonged.

Description

technical field [0001] The invention relates to the field of fenders, in particular to a high-strength wear-resistant composite fender and its processing technology. Background technique [0002] The fender is a plate structure installed behind the outer frame of the wheel, and the material is composed of metal, cowhide, plastic, rubber, etc. The main function of the vehicle fender is to prevent the mud from splashing on the body or people, increase the aesthetics of the body, and prevent rust after the mud is splashed; the fender for the car can also prevent the tire from being entrained in the seam when the speed is too fast Small stones were thrown on the car body, and the exterior paint of the car collapsed. [0003] The three major requirements for the development of my country's automotive environmental protection materials are lightweight, green and environmentally friendly, comfortable and safe; currently, the lightweight materials for automobiles mainly include hig...

Claims

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Application Information

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IPC IPC(8): C08J9/36C08L23/12C08L77/02C08L1/08C08K7/28C08J9/12C08B15/06C09D123/06C09D11/08B62D25/16
CPCC08J9/365C08J9/122C08J9/0061C08J9/0066C09D123/06C09D11/08C08B15/06B62D25/161C08L2207/066C08J2323/12C08J2477/02C08J2401/08C08J2423/06C08J2487/00C08J2481/02C08J2203/08C08J2203/06C08L87/00C08L1/08C08L81/02Y02A30/30
Inventor 王冠华柳晓敏孙凤英
Owner CHANGZHOU NANGUA VEHICLE PARTS
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