Preparation method of high-performance chlorinated polyvinyl chloride injection aggregate

A technology of chlorinated polyvinyl chloride and injection molding pellets, which is applied in the preparation of high-performance chlorinated polyvinyl chloride injection molding pellets and the field of injection molding pellets, can solve the problem of easy decomposition, small application range, and increase the processing difficulty of CPVC injection molding products, etc. problem, to achieve the effect of not polluting the environment

Inactive Publication Date: 2011-09-21
SHANGHAI DEWIN PLASTIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 produ

Method used

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  • Preparation method of high-performance chlorinated polyvinyl chloride injection aggregate

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Embodiment Construction

[0021] The technical scheme of the present invention is further illustrated below by specific implementation examples:

[0022] (1) Weigh according to the weight ratio of the raw material components listed in Table 1, put it into a high-speed mixer, mix it at a high speed to raise the temperature to 100-140°C, fully disperse it evenly, then put it into a low-speed cold mixer, and cool it to 40-60°C.

[0023] (2) Put the mixed ingredients into an extrusion granulator, extrude and cut into pellets to obtain CPVC injection molding pellets.

[0024] (3) The physical properties of the obtained CPVC injection molding pellets are shown in Table 2.

[0025] Table 1 raw material component weight ratio

[0026]

[0027] Table 2 The physical properties of pellets

[0028] project

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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...

Claims

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Application Information

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IPC IPC(8): C08L27/24C08K13/02
Inventor 吴柏江唐克能
Owner SHANGHAI DEWIN PLASTIC TECH
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