High-strength durable type rotational-molded automobile urea box

Abstract

The invention relates to a high-strength durable type rotational-molded automobile urea box, belongs to the field of chemical industry, and relates to a material for an automobile urea box. The invention aims at solving the durability problem of the high-strength durable type rotational-molded automobile urea box by changing the urea box material. The urea box master batch is prepared from the following materials in parts by weight: linear low-density polyethylene, high-density polyethylene, POE (Polyoxyethylene), calcium stearate, antioxidant 1010, antioxidant 168, and ethoxyl alkylamine serving as an antistatic agent. The urea box is prepared from the following materials in parts by weight: the master batch and linear low-density polyethylene. According to the invention, the rotational-molded urea box material is advanced in formula and strong in popularization property, and solves the problem that the urea box material has poor environmental stress resistance; the urea box material satisfies the rotational molding processing process requirements; the service life of the manufactured automobile urea box is prolonged by 30%, and the manufactured automobile urea box is applicable to use environments in high-temperature and cold areas; and the preparation method is simple and feasible, and easy for mass production.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a material for an automobile urea tank. Background technique [0002] At present, the material of urea tank for automotive rotomolding is linear low density polyethylene, which cannot meet the requirements of forming and using the urea tank. The problem of environmental stress cracking resistance of polyethylene materials is a common problem; the use temperature of a single polyethylene is at 80°C for a long time, in order to produce deformation and collapse, if it is under pressure, the situation will Worse; the unmodified single linear low-density polyethylene has poor long-term aging resistance, and it will turn yellow or even powder after a long time, especially the ability to resist ultraviolet rays is worse; the melting point of linear polyethylene is low. It is also very difficult to modify the plastic molding characteristics. It is difficult to control the melting point of ...

AI Technical Summary

Problems solved by technology

[0002] At present, the material of automotive rotomoulding urea tank is linear low-density polyethylene, which cannot meet the requirements of the molding and use conditions of the urea tank.

The problem of environmental stress cracking resistance of polyethylene materials is a common problem; the use temperature of a single polyethylene is at 80°C for a long time, in order to produce deformation and collapse, if it is under pressure, the situation will Worse; the unmodified single linear low-density polyethylene has poor long-term aging resistance, and it will turn yellow or even powder after a long time, especially the ability to resist ultraviolet rays is worse; the melting point of linear polyethylene is low. It is also very difficult to modify the characteristics of plastic molding. It is difficult to control the melting point of several materials to be the same as that of polyethylene, otherwise the problem of difficult molding cannot be solved.

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