Slush molding PVC (Poly Vinyl Chloride) material for instrument panel covering and preparation method of slush molding PVC material

A PVC material and instrument panel technology, applied in the field of PVC material and its preparation, can solve the problems of low low-temperature impact, poor low-temperature resistance and poor compatibility of PVC materials, and achieve poor temperature resistance, excellent temperature resistance, and favorable powder The effect of slush molding

Active Publication Date: 2013-03-20
SUZHOU RUNJIA ENGINEER PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patents ZL02110787.4 and ZL200510016921.8 report adding a certain proportion of various additives to PVC powder to prepare slush molding powder by dry mixing. Patents EP0312367, JP02209941 and JP07149983 also report adding certain additives to PVC powder. The slush molding powder was prepared by dry mixing with a variety of additives in different proportions, but the slush molding powder they made did not solve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0047] Example 1

[0048] 50 kg of MPVC resin, 5.5 kg of heat stabilizer, 0.5 kg of composite light stabilizer, and 0.5 kg of antioxidant were added to the high mixer for stirring and heating, the temperature was raised to 90 ° C, 5 kg of silicone oil and 5 kg of epoxy soybean oil were added. kg, stir for 2-3 minutes, heat up to 120 ° C, and add 18.7 kg of plasticizer successively, and continue to stir for 3-5 minutes, stop heating and stirring, lower the temperature to 100 ° C, and stir for 2-3 minutes at the same time, Then heat up to 130°C, add 6.3 kg of plasticizer one after another, continue stirring for 3-5 minutes, stop heating and stirring, then cool down to 110°C, add 0.25 kg of carbon black, stir for 2-5 minutes, and heat up to 135°C , stir at high speed for 3-5 minutes and discharge.

[0049] Then put the above-obtained material into another high-mixer, cool down to 30° C., add 5 kg of dispersant, stir for 8-10 minutes and discharge, to obtain the slush-plastic PV...

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PUM

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Abstract

The invention discloses a slush molding PVC (Poly Vinyl Chloride) material for an instrument panel covering and a preparation method of the slush molding PVC material. The slush molding PVC material consists of the following ingredients in parts by weight: 48-53 parts of polrvinyl chloride bulk polymerization resin, 23-27 parts of plasticizer, 3-8 parts of epoxy-ester compounds, 5-6 parts of heat stabilizer, 0.2-1.0 part of compound light stabilizer, 0.3-1.0 part of antioxidant, 3-5 parts of silicone oil, 0.2-0.3 parts of carbon black and 3-5 parts of dispersing agent. Antalkali is introduced in auxiliaries and used for neutralizing amino groups in polyurethane, the reaction of PVC with the amino groups is prevented and the light aging problem of the slush molding PVC surface cover is solved; meanwhile, the problem of poor temperature tolerance of the PVC is solved by virtue of the excellent temperature tolerance of silicone oil; and the dispersing agent is introduced into the formula of powder, so that fluffy powder material can be conveniently transformed to sand-shaped powder material and then the slush molding of powder is facilitated.

Description

technical field [0001] The invention relates to a PVC material and a preparation method thereof, in particular to a slush-molded PVC material for instrument panel skin and a preparation method thereof. Background technique [0002] The instrument panel is an important functional and decorative part of the car. The quality and grade of the instrument panel is one of the important indicators for people to evaluate the quality of a car. When choosing a dashboard, performance, functionality, manufacturing cost, and decorative style should be considered. The instrument panels of high-end cars tend to use powder slush plastic skin. Slush molding is a stress-free process, so the slush plastic skin is not easy to crack, has stable dimensions, uniform thickness, clear skin texture, good hand feeling, and is closer to natural leather. In terms of aging resistance, slush-plastic skins show obvious advantages, and are superior to deep-drawn skins in terms of heat resistance, fogging,...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L83/04C08L83/07C08K13/02C08K3/04C08K5/1515C08K5/01
Inventor 翁永华汪理文丁贤麟
Owner SUZHOU RUNJIA ENGINEER PLASTIC
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