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Low-VOC polyvinyl chloride/powder nitrile butadiene rubber thermoplastic elastomer sealing strip and preparation method thereof

A technology of powdered nitrile rubber and thermoplastic elastomers, which can be applied in other household appliances, household components, applications, etc., can solve the problems of large compression and permanent deformation of thermoplastic elastomers, achieve low viscosity solubility, improve comprehensive performance, and excellent durability. Effects of Migration and Extraction Resistance

Inactive Publication Date: 2017-08-22
ZHEJIANG XINGYU AUTO PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the blended PVC thermoplastic elastomer has a large compression permanent deformation, which has become a technical bottleneck in the manufacture of automotive seals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of low-VOC polyvinyl chloride / powder nitrile rubber thermoplastic elastomer sealing strip, specifically: 100 parts of PVC, 10 parts of PNBR, 70 parts of glyceryl branched polyester plasticizer (P-Gly-HHPAs ), 5 parts of epoxy soybean oil, 80 parts of superfine calcium carbonate, 10 parts of carbon black, 5 parts of stearic acid, 10 parts of zinc oxide, 8.0 parts of calcium zinc composite stabilizer, 0.5 parts of di-tert-butyl peroxide isopropyl Base benzene, 2 parts of anti-aging agent 4010NA were added to the low-speed mixer for pre-dispersion, mixed for 8-15 minutes and discharged, then added to the twin-screw extruder to extrude and pelletize at a processing temperature of 160°C~190°C, and the pellets were processed Under the condition of temperature 160 ℃ ~ 185 ℃ (die temperature 180 ℃), it is extruded through an extruder to obtain a low-VOC polyvinyl chloride / powder nitrile rubber thermoplastic elastomer sealing strip.

[0023] The tensile stre...

Embodiment 2

[0025] A kind of preparation method of low-VOC polyvinyl chloride / powder nitrile rubber thermoplastic elastomer sealing strip is the same as embodiment 1, the difference is that the formula is: 100 parts of PVC, 60 parts of PNBR, 10 parts of glyceryl branched polyester plasticized agent (P-Gly-AAs), 30 parts of epoxidized soybean oil, 10 parts of superfine calcium carbonate, 30 parts of carbon black, 1 part of stearic acid, 2 parts of zinc oxide, 3 parts of calcium zinc composite stabilizer, 3 parts of double tert-butyl peroxide cumene, 0.5 parts of antioxidant 4010NA.

[0026] The tensile strength of the sealing strip was measured to be 15.8MPa, and the compression set (after 24h storage at 70°C, compressed by 8mm and unloaded for 1h) was 32.3%.

Embodiment 3

[0028] The preparation method of low-VOC polyvinyl chloride / powder nitrile rubber thermoplastic elastomer sealing strip is the same as embodiment 1, and the difference is that the formula is: 100 parts of PVC, 30 parts of PNBR, 50 parts of glyceryl branched polyester plasticizer ( P-Gly-HHPAs), 10 parts of epoxy soybean oil, 30 parts of superfine calcium carbonate, 20 parts of carbon black, 2 parts of stearic acid, 6 parts of zinc oxide, 6 parts of calcium zinc composite stabilizer, 2 parts of double tert-butyl peroxide cumene, 1 part anti-aging agent 4010NA.

[0029] The tensile strength of the sealing strip was measured to be 14.6MPa, and the compression set (after 24h storage at 70°C, compressed by 8mm and unloaded for 1h) was 30.4%.

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Abstract

The invention relates to a sealing strip, in particular to a low-VOC polyvinyl chloride / powder nitrile butadiene rubber thermoplastic elastomer sealing strip and a preparation method thereof. The low-smoke zero-halogen flame-retardant sealing strip is prepared from the following raw materials in parts by weight: 100 parts of PVC, 10 to 60 parts of PNBR (powder nitrile butadiene rubber), 10 to 70 parts of plant oil based polyester plasticizer, 5 to 30 parts of epoxidized soybean oil, 10 to 80 parts of calcium carbonate superfine powder, 10 to 30 parts of carbon black, 1 to 5 parts of stearic acid, 2 to 10 parts of zinc oxide, 3 to 8 parts of calcium and zinc composite stabilizer, 0.5 to 3 parts of bis(1-(tert-butylperoxy)-1-methylethyl)-benzene and 0.5 to 2 parts of antiager 4010NA. The low-VOC polyvinyl chloride / powder nitrile butadiene rubber thermoplastic elastomer sealing strip disclosed by the invention has the characteristics of good resilience, low VOC emission, excellent comprehensive performance and the like and is suitable for use in industries of automobiles, buildings, cables, household appliances and the like.

Description

technical field [0001] The invention relates to a sealing strip, in particular to a low-VOC polyvinyl chloride / powder nitrile rubber thermoplastic elastomer sealing strip and a preparation method thereof. Background technique [0002] "Energy saving, environmental protection, and safety" are the eternal themes of automobile development. As an important aspect of automobile environmental protection and safety, the air quality in the car will have a profound impact on consumers' car purchase concepts. Only by starting from the source, developing, preparing, and selecting low-volatile organic compound (VOC) interior materials can fundamentally solve the problem of excessive VOC in the car. Blended polyvinyl chloride (PVC) thermoplastic elastomer is widely used in the manufacture of automotive seals, parts and other products due to its excellent mechanical properties, high cost performance, easy processing and molding, and recyclability. [0003] However, the blended PVC thermo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L9/02C08L67/00C08L91/00C08K13/02C08K3/26C08K3/04C08K5/09C08K3/22C08K5/14B29B9/06B29C47/92B29L31/26B29C48/92
CPCC08L27/06B29B9/06B29C48/92B29C2948/92704B29L2031/26C08K2003/2296C08K2003/265C08K2201/003C08K2201/011C08L2205/035C08L2207/04C08L9/02C08L67/00C08L91/00C08K13/02C08K3/26C08K3/04C08K5/09C08K3/22C08K5/14
Inventor 王永进陈文杰赵建飞陈志勇
Owner ZHEJIANG XINGYU AUTO PARTS CO LTD
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