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Sealant compositions and method of preparing the same

A technology of composition and sealant, which is applied in the direction of chemical instruments and methods, adhesives, and other chemical processes, can solve the problems of easy sagging or tailing, and achieve the effect of avoiding sagging and tailing

Inactive Publication Date: 2009-05-06
嘉兴三喜新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the phenomenon of sagging or tailing that is easy to occur when the existing sealant composition is used, and to provide a method to avoid sagging or tailing Sealant composition for tailing phenomenon and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation method of the composition also provided by the present invention comprises mixing polyvinyl chloride resin, plasticizer, filler, adhesion additive and thixotropic agent, wherein, the thixotropic agent comprises thixotropic agent A and thixotropic agent B, The average primary particle diameter of thixotropic agent A is different from the average primary particle diameter of thixotropic agent B.

[0027]Based on the total weight of the composition, the amount of polyvinyl chloride resin can be 5-45% by weight, preferably 8-30% by weight; the amount of plasticizer can be 10-60% by weight, preferably 15-45% by weight. % by weight; the amount of filler can be 15-60% by weight, preferably 25-50% by weight; the amount of adhesion promoter can be 0.1-10% by weight, preferably 0.2-5% by weight; the amount of thixotropic agent A It can be 5-25% by weight, preferably 8-18% by weight; the amount of thixotropic agent B can be 2-15% by weight, preferably 5-12% by weig...

Embodiment 1

[0042] This example is used to illustrate the sealant composition provided by the present invention and its preparation method.

[0043] (1) Add 28 parts by weight of plasticizer DOP (produced by Jinling Petrochemical) into the dispersion barrel of a biaxial high-speed disperser (model: ZXJ-35, produced by Jiangsu Qinye Chemical Machinery Co., Ltd.), Polyamide adhesion promoter (model: Versamid115, produced by Cogins), 2 parts by weight of rare earth stabilizer (model: REC852A, produced by Guangdong Guangyang High-tech Industrial Company), 2 parts by weight of desiccant calcium oxide (Shanghai Qingpu special oxide Calcium Factory) and 1 part by weight of titanium dioxide (model: CR-826, produced by Kemeiqi Company) were added into the dispersion bucket, and stirred at 300 rpm for 5 minutes to make the plasticizer, tackifier, and stabilizer Agents, desiccants and pigments are evenly dispersed.

[0044] (2) 12 parts by weight of thixotropic agent A (nano calcium carbonate, mode...

Embodiment 2

[0056] This example is used to illustrate the sealant composition provided by the present invention and its preparation method.

[0057] Obtain composition A2 according to the same method as Example 1, the difference is that the raw materials used include: 10 parts by weight of PVC paste resin E5 / 65C, 20 parts by weight of plasticizer DBP, 42 parts by weight of filler (heavy calcium carbonate , Fineness: 800 mesh, produced by Guangzhou Fujian Materials Co., Ltd.), 18 parts by weight of thixotropic agent CC-5, 6 parts by weight of thixotropic agent J-13233, and 4 parts by weight of adhesion promoter Versamid115.

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PUM

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Abstract

The invention discloses a sealant composition, which contains a polyvinyl chloride resin, a plasticizer, a filler, an adhesion additive and a thixotropic agent, wherein the thixotropic agent comprises a thixotropic agent A and a thixotropic agent B, and the average primary particle size of the thixotropic agent A is different from that of the thixotropic agent B. The invention also provides a method for preparing the composition. The sealant composition uses the two thixotropic agents with different average primary particle sizes, can adjust the viscosity of a sealant, and can simultaneously avoid sagging and trailing phenomena.

Description

technical field [0001] The present invention relates to a composition and a preparation method thereof, more particularly to a sealant composition and a preparation method thereof. Background technique [0002] The application of adhesives (sealants) in the automobile industry began in the 1940s, and its main purpose was to seal and prevent rust. Since the 1960s, with the improvement of the production process of the automobile industry and the comfort and luxury of cars Needs, especially after the advent of oil surface adhesives, the automotive industry began to use a large number of adhesives and sealants. PVC sealant contains polyvinyl chloride resin (PVC resin), plasticizer, filler, adhesion additive and thixotropic agent. It is a stable paste at room temperature. When heated to a certain temperature, it can be "plasticized" into a It has a certain degree of elasticity and strength, and has good water resistance, oil resistance, and medium-resistant solids, so it is very...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10C09J127/06C09J11/00
Inventor 谭伟华李志新
Owner 嘉兴三喜新材料有限公司
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