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High impact rotational-molding splash guard for automobiles

A technology of high impact resistance and fenders, applied in the chemical industry, to achieve the effect of advanced formula, good illumination and strong promotion

Inactive Publication Date: 2012-07-04
FAW GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the long-term service durability problem of the automobile fender by changing the material of the fender to the high impact rotomolded fender for automobile

Method used

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  • High impact rotational-molding splash guard for automobiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The present invention makes the required material of urea tank masterbatch and consists of:

[0025] Linear Low Density Polyethylene 30 High Density Polyethylene 20

[0026] EVA 50 Calcium stearate 1 Antioxidant 1010 1

[0027] Antioxidant 168 3 UV absorber-------UV-531 2

[0028] Antistatic agent ----- hydroxyethyl alkylamine 2;

[0029] The parts by weight of the materials needed to make the urea tank consist of:

[0030] Masterbatch 8 Linear Low Density Polyethylene 92. The masterbatch and LLDPE are mixed in this ratio, which avoids all materials being re-pelletized in the twin-screw extruder, causing unnecessary degradation of the material.

[0031] The present invention weighs linear low-density polyethylene, high-density polyethylene, EVA, calcium stearate, antioxidant 1010, antioxidant 168, ultraviolet absorber and antistatic agent according to the proportioning; , put linear low-density polyethylene, high-density polyethylene, EVA, calcium stearate, antioxi...

Embodiment 2

[0033] The present invention makes the required material of urea tank masterbatch and consists of:

[0034] Linear Low Density Polyethylene 30 High Density Polyethylene 20

[0035] EVA 50 Calcium stearate 1 Antioxidant 1010 1

[0036] Antioxidant 168 3 UV absorber-------UV-531 2

[0037] Antistatic agent ----- hydroxyethyl alkylamine 2;

[0038] The parts by weight of the materials needed to make the urea tank consist of:

[0039] Masterbatch 9 Linear Low Density Polyethylene 91. The masterbatch and LLDPE are mixed in this ratio, which avoids all materials being re-pelletized in the twin-screw extruder, causing unnecessary degradation of the material.

[0040] Production method is identical with embodiment 1.

Embodiment 3

[0042] The present invention makes the required material of urea tank masterbatch and consists of:

[0043] Linear Low Density Polyethylene 30 High Density Polyethylene 20

[0044] EVA 50 Calcium stearate 1 Antioxidant 1010 1

[0045] Antioxidant 168 3 UV absorber-------UV-531 2

[0046] Antistatic agent ----- hydroxyethyl alkylamine 2;

[0047] The parts by weight of the materials needed to make the urea tank consist of:

[0048] Masterbatch 10 Linear Low Density Polyethylene 90. The masterbatch and LLDPE are mixed in this ratio, which avoids all materials being re-pelletized in the twin-screw extruder, causing unnecessary degradation of the material.

[0049] Production method is identical with embodiment 1.

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Abstract

A high impact rotational-molding splash guard for automobiles belongs to the field of chemical engineering and relates to materials of automobile splash guards. The high impact rotational-molding splash guard for the automobiles aims at solving the problem of durability of the automobile splash guards during long-period use by changing materials of the splash guard. According to part by weight, materials required by urea box master batch preparation include linear low-density polyethylene, high-density polyethylene, ethylene vinyl acetate copolymer (EVA), calcium stearate, antioxygen1010, antioxygen168, ultraviolet absorber and antistatic agent which adopts hydroxyethyl alkyl amine. According to part by weight, materials required by urea box preparation include master batches and linear low-density polyethylene. The high impact rotational-molding splash guard can adapt to high temperature and low temperature working environments, works at temperatures of -40-80 DEG C for a long period, is advanced in formula and strong in popularization capability, and solves the problem of poor environmental stress resistance of the materials. The materials of the high impact rotational-molding splash guard meet technological requirements of rotational-molding processing, and the automobile splash guard manufactured by the materials is prolonged by 30% in service life and is suitable for use environments of high temperature and severe cold areas. In addition, the manufacture method of the high impact rotational-molding splash guard is simple and easy to operate and convenient for massive production.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to materials for automobile fenders. Background technique [0002] At present, the material of automobile fenders is linear low-density polyethylene, which cannot meet the requirements of forming and using conditions of fenders. The problems of environmental stress cracking resistance and poor impact resistance of polyethylene materials are common problems; unmodified single linear low density polyethylene has poor long-term aging resistance, and yellowing or even pulverization will occur in long-term use phenomenon, especially the ability to resist ultraviolet rays is worse; especially when the car is driving, the muddy water environment in contact with is harsh, and the acid-base medium in it severely corrodes the fender; the melting point of linear polyethylene is low, and its rotational molding It is also very difficult to modify its characteristic requirements, and it is difficul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08K5/098C08K5/17
Inventor 杨彬朱熠周宇飞杨兆国
Owner FAW GROUP
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