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Environment-friendly PVC sealing strip and preparation method thereof

A sealing strip and environmental protection technology, applied in the field of environmental protection PVC sealing strip for vehicles and its preparation, can solve the problems of aging and shrinkage, and achieve the effects of good tensile force and elasticity, good anti-shrinkage and aging performance, and low VOC emissions.

Pending Publication Date: 2019-08-02
温州包鹿新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method does not solve the aging shrinkage problem of its long-term use

Method used

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  • Environment-friendly PVC sealing strip and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An environment-friendly low-shrinkage PVC sealing strip, the sealing strip includes 100 parts of S-1000PVC, 18 parts of EPDM rubber, 91 parts of poly(1,2-propylene glycol adipate), 9 parts of calcium carbonate, and 12 parts of zinc oxide , 20 parts of carbon black, 8 parts of chlorinated paraffin-52, 7 parts of calcium zinc stabilizer, 1 part of diphenylsulfonyl hydrazide ether foaming agent, 2.4 parts of zinc borate;

[0024] The preparation method of the sealing strip specifically comprises the steps of:

[0025] (1) Surface modification of inorganic fillers:

[0026] Calcium carbonate and polyvinyl ester were weighed according to the mass ratio of 100:2, added to a high-speed kneader and kneaded for 45 minutes, then transferred to a blast drying oven, kept at 85°C for 2 hours, and cooled to obtain modified calcium carbonate.

[0027] Weigh zinc oxide and polyvinyl ester at a mass ratio of 100:2, put them into a high-speed kneader and knead for 45 minutes, then trans...

Embodiment 2

[0034] An environmentally friendly low-shrinkage PVC sealing strip, the sealing strip includes 100 parts of S-1000, 22 parts of EPDM rubber, 88 parts of polyethylene adipate, 13 parts of calcium carbonate, 13 parts of zinc oxide, carbon 21 parts of black, 8 parts of chlorinated paraffin-52, 6 parts of calcium zinc stabilizer, 0.8 parts of diphenylsulfonyl hydrazide ether foaming agent, 3 parts of hollow microspheres;

[0035] The preparation method is the same as in Example 1, wherein the surface modification temperature of the hollow microspheres is 100° C., and the heat treatment time is 3 hours, so that the chlorinated paraffin fully infiltrates the surface of the microspheres.

Embodiment 3

[0037]An environmentally friendly low-shrinkage PVC sealing strip, the sealing strip includes 100 parts of S-1300 type PVC, 23 parts of EPDM rubber, 84 parts of 1,2-propylene glycol adipate, 17 parts of calcium carbonate, and 15 parts of zinc oxide Parts, 21 parts of carbon black, 8 parts of chlorinated paraffin-52, 8 parts of calcium zinc stabilizer, 0.8 part of diphenylsulfonyl hydrazide ether blowing agent, 2.4 parts of zinc borate flame retardant;

[0038] The preparation method is the same as in Example 1.

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Abstract

The invention provides an environment-friendly low-shrinkage PVC sealing strip. The sealing strip comprises 100 parts of PVC, 15-30 parts of EPDM rubber, 80-100 parts of a plasticizer, 8-18 parts of calcium carbonate, 8-16 parts of zinc oxide, 15-25 parts of carbon black, 6-10 parts of chlorinated paraffin, 5-8 parts of a calcium-zinc stabilizer, 0.5-2 parts of a bis(benzenesulfonyl hydrazide) ether foaming agent and 1-5 parts of a flame retardant. By unique process control in the preparation process of the sealing strip, the VOC content is reduced, and the mechanical property and the shrinkage resistance of the sealing strip are improved.

Description

technical field [0001] The invention belongs to the technical field of sealing strips, and in particular relates to an environment-friendly PVC sealing strip for vehicles 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. The products produced by the domestic automotive sealing strip industry basically have no control over their odor and volatile organic compounds. The inspection data exceeds the requirements of national regulations and standards, and there are serious foreign objects in the compartment. At present, manufacturers of sealing strips simply add deodorants or essences to the formula, and also perform subsequent heat-baking treatment to eliminate odors and organic volatiles. This pract...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L67/02C08L23/16C08L91/06C08K13/06C08K9/04C08K3/26C08K3/22C08K3/04C08K3/38C08K7/22C08J9/10C09K3/10
CPCC08J9/105C08J2203/04C08J2327/06C08J2423/16C08J2467/02C08K3/04C08K7/22C08K9/08C08K13/06C08K2003/2296C08K2003/265C08K2003/387C09K3/10
Inventor 不公告发明人
Owner 温州包鹿新材料有限公司
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