Powder for forming enamelled plastics and its preparing process

A technology of powder and polyvinyl chloride, which is applied in the field of slush molding powder and its preparation, can solve the problems of poor melting performance and achieve good flow performance, satisfactory mechanical properties and excellent melting performance

Inactive Publication Date: 2004-06-09
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Suspension polymer resin is used to prepare slush powder, and its melting performance is poor

Method used

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  • Powder for forming enamelled plastics and its preparing process

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Experimental program
Comparison scheme
Effect test

Embodiment

[0036] Add 40Kg of MPVC (the degree of polymerization is 1000), 1.2Kg of calcium stearate, 0.8Kg of zinc stearate, 120g of bisphenol A, 200g of DSTP, 20g of light stabilizer 144, and 20g of UV-326 into the high-speed mixer In, stir and heat up to 95 DEG C, add 25KgDINP, the epoxidized soybean oil of 2.7Kg, continue to stir and heat up, when temperature rises to 105 DEG C, stop heating, stop stirring, make polyvinyl chloride resin absorb plasticizer, 10 minutes ( After t1), the plasticizer has been completely absorbed. At this time, stir and heat up to 120°C, add 800g of carbon black, stir for 2-5 minutes, and discharge to obtain a fluffy powder. When the temperature of the fluffy powder dropped to 65°C, it was added to another high-speed mixer, and 6Kg of PPVC resin (polymerization degree was 1500) was added, stirred for 10 minutes and discharged. Sieve with a 40-mesh sieve to obtain the title mixture.

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Abstract

An enamel-plastics powder for the meter panel of car is prepared from polyvinyl chloride resin, non-toxic stabilizer, high-molecular plasticizer and superfine polyvinyl chloride resin through proportional mixing. Its advantages include high flowability, excellent melting performance and good mechanical performance.

Description

technical field [0001] The invention relates to a slush molding powder used in a slush molding process and a preparation method thereof. Background technique [0002] Powder slush molding is the most advanced technology in the powder molding process. Its process is roughly as follows: first, the mold is heated to a certain temperature, and the slush molding powder is used for free flow to carry out slush molding. to the inner surface of the hot mold; then further heat the mold with slush powder to melt and compact the slush powder; then cool the mold to shape the product, and finally take the product out of the mold to complete a slush cycle . From the process of slush molding, it can be seen that slush powder must have good fluidity and melting characteristics, especially the melting characteristics of slush powder, which are very important, and it has a decisive impact on the quality and performance of the final product. [0003] The relevant pate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/3465C08L27/06
Inventor 戴干策骆玉祥林群芳周晓东孙斌潘敏
Owner EAST CHINA UNIV OF SCI & TECH
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