Preparation method of chlorinated polyethylene for flame-retardant ABS production

Abstract

The invention relates to a preparation method of chlorinated polyethylene for flame-retardant ABS production. The preparation method comprises the following steps: preparing chlorinated polyethylene slurry; sequentially deacidifying, neutralizing, centrifuging and drying the prepared chlorinated polyethylene slurry to obtain a chlorinated polyethylene base material; and subjecting the chlorinated polyethylene base material to a reaction again to obtain a chlorinated polyethylene product for flame-retardant ABS production, wherein after a first stirring stage is completed, a material mixing degree in a reaction bin is detected and the stirring duration or the stirring speed of the second stirring stage is adjusted according to the material mixing degree, and after a third stirring stage is completed, the viscosity of the materials in the reaction bin is detected and pressure in the reaction bin and reaction duration during final reaction are adjusted according to the viscosity. According to the invention, the process of a next reaction state is adjusted according to the result of a previous reaction state, and meanwhile, the proportioning range of the raw materials is enlarged through intelligent adjustment, so the production of chlorinated polyethylene is more convenient, and meanwhile, the quality of the finished product of chlorinated polyethylene is improved.

Description

technical field [0001] The invention relates to the technical field of chemical production, in particular to a preparation method of chlorinated polyethylene used in the production of flame-retardant ABS. Background technique [0002] ABS resin is one of the five major synthetic resins. It has excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical properties. It also has the characteristics of easy processing, stable product size, and good surface gloss. It is easy to paint. , coloring, and secondary processing such as surface metal spraying, electroplating, welding, hot pressing and bonding, etc. It is widely used in industrial fields such as machinery, automobiles, electronic appliances, instrumentation, textiles and construction. Wide range of thermoplastic engineering plastics. [0003] When ABS is used alone, its flame retardancy is poor. In practical applications, flame retardants should be added to improve its fla...

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Problems solved by technology

[0005] For this reason, the present invention provides a kind of preparation method of the chlorinated polyethylene that is used for the production of flame-retardant ABS, in order to overcome the problem of low product yield rate in the prior art because of backward production technology

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