High-strength modified plastic

Abstract

The invention discloses high-strength modified plastic which is prepared from the following ingredients: polyvinyl chloride, di-(2-ethylhexyl)-epoxy tetrahydrophthalate, isopropyl isobutyrate, waste plastic, a sodium silicoaluminate and shell powder mixture, nanometer titanium dioxide, a plasticizer, a heat-resisting stabilizer, a glass fiber and an assistant. Cyclic utilization of the waste plastic is achieved; the recovery utilization rate of the waste plastic in China is improved; the pressure of the waste plastic on the environment is relieved; energy and resource conservation is achieved. According to the high-strength modified plastic, through cooperation of the treated waste plastic, the sodium silicoaluminate and shell powder mixture, the nanometer titanium dioxide and the assistant, the interfacial compatibility and the dispersity among the ingredients can be strengthened; the oxidation resistance, ultraviolet light-resistant anti-crack property, chemical resistance and antibacterial performance of the prepared modified plastic are greatly improved; the lifetime of the modified plastic is prolonged by 19% in comparison with that of ordinary polyvinyl chloride plastic.

Description

technical field [0001] The invention relates to the field of plastics, in particular to a high-strength modified plastic. Background technique [0002] The general polyvinyl chloride plastic on the market has a small degree of branching, a relative density of about 1.4, a glass transition temperature of 77~90 °C, and begins to decompose at about 170 °C, and the stability to light and heat is poor. When exposed to sunlight, it will decompose to produce hydrogen chloride, which will further autocatalyze decomposition, causing discoloration, rapid decline in physical and mechanical properties, high brittleness and poor impact resistance, which limit its application. [0003] With the rapid development of the plastics industry, waste plastics are also increasing year by year. Among them, polyethylene is widely used and used in large quantities, and the waste generated after its processing, production and use accounts for about 30% of the total waste plastics. The pollution caus...

AI Technical Summary

Problems solved by technology

[0002] General polyvinyl chloride plastics on the market have a small degree of branching, a relative density of about 1.4, a glass transition temperature of 77~90°C, and begin to decompose at about 170°C. They have poor stability to light and heat. When exposed to sunlight, it will decompose to produce hydrogen chloride, and further autocatalyze the decomposition, causing discoloration, rapid decline in physical and mechanical properties, greater brittleness and poor impact resistance, etc. These shortcomings limit its application.