Preparation method of high-performance chlorinated polyvinyl chloride injection aggregate

Abstract

The invention discloses a preparation method of chlorinated polyvinyl chloride (CPVC) injection aggregate which is characterized by high strength, high-temperature resistance, corrosion resistance and combustion supporting and a product of smooth surface. The chlorinated polyvinyl chloride injection aggregate comprises by weight: 100 parts of CPVC resin; 3-5 parts of stabilizer; 2-5 parts of lubricant and 5-12 parts of impact modifier; 0.5-5 parts of processing agent; 1-10 parts of filler; 0.1-2 parts of antioxidant. The invention also provides a preparation method of the chlorinated polyvinyl chloride injection aggregate. Specifically, each ingredient is subjected to a high-speed mixture to reach a temperature of 100-140 DEG C and dispersed well. Then the mixed ingredients are cooled to 40-60 DEG C. After extrusion and granulating, the chlorinated polyvinyl chloride injection aggregate can be obtained. With a Vicat softening temperature not below 103 DEG C, the high-performance chlorinated polyvinyl chloride injection aggregate provided in the invention has the advantages of high mechanical strength and toughness, excellent corrosion resistance and fire resistance. Thus, the injection aggregate can be widely used in manufacturing valves and parts for conveying high temperature soda acid in chemical industry and daily domestic hot water, and manufacturing other injection products with high intensity and high temperature resistance.

Description

Technical field: [0001] The invention belongs to the technical field of processing thermoplastics, and in particular relates to a method for preparing high-performance chlorinated polyvinyl chloride injection molding pellets, in particular to a method that can be widely used in the production of chemical industry for transporting high-temperature acid-base and daily hot water. Injection molding pellets for valves and fittings and other high-strength, high-temperature-resistant injection molding products. Background technique [0002] In the prior art, metal-lined fluoroplastics, or glass fiber reinforced plastics, polypropylene, etc. are commonly used in the chemical industry to transport high-temperature acid-base, daily hot water valves and fittings, and other high-strength, high-temperature-resistant injection molding products. These injection molding products such as valves and fittings, some have complex manufacturing process, some are expensive, some have short service...

AI Technical Summary

Problems solved by technology

However, the extra chlorine makes the CPVC melt viscous and easy to decompose, which greatly increases the processing difficulty of CPVC injection molding products, so that CPVC injection molding products are rarely involved in the processing of plastic injection molding parts, and the application range is quite small.

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