Polyvinyl chloride plastisol and preparation method and application thereof

A technology of polyvinyl chloride and plastisol, applied in the field of polyvinyl chloride plastisol and its preparation and application, can solve the problems of polluting the environment, difficulty in unification, etc., achieve good compatibility, improve strength, and avoid the effects of early curing

Inactive Publication Date: 2016-11-23
SHANGHAI CHLOR ALKALI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN 201010109199.3 and patent 201010279784.8 respectively disclose a blend of polyvinyl chloride and epoxy resin and its preparation method. A small amount of epoxy resin is added to polyvinyl chloride, and the epoxy resin and polyvinyl chloride form a semi-interpenetrating network structure, improving The performance of polyvinyl chloride products, but because vinyl chloride is a thermoplastic material, and epoxy resin is a thermosetting material, it is difficult to ensure the unity of the two under the extrusion process. Patent CN 201310107167.3 discloses a polyvinyl chloride resin anti-corrosion Coating and its preparation method, epoxy resin is added to the polyvinyl chloride mixture, which improves the performance of the coating. This patent uses a volatile organic solvent to dissolve polyvinyl chloride, and the solvent needs to be volatilized during curing, polluting the environment

Method used

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  • Polyvinyl chloride plastisol and preparation method and application thereof
  • Polyvinyl chloride plastisol and preparation method and application thereof
  • Polyvinyl chloride plastisol and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add each component according to the portion in the table.

[0036] The PVC paste resin resin is an emulsion polymerization resin with a degree of polymerization of 1000, the plasticizer is dioctyl phthalate, the epoxy equivalent of the epoxy resin is 200, the heat stabilizer is organotin, the filler is light calcium carbonate, and the contact The variable agent is nano-silica, and the diluent is C 12 isoparaffins.

[0037] The preparation method of the curing agent is as follows: under stirring at 20° C., liquid hexahydrophthalic anhydride is added dropwise to liquid xylene polyamine under the protection of inert gas, and the reaction is carried out for 3 hours. At room temperature, the components are mixed and fully dispersed, vacuum defoamed for 3 hours and then matured for 24 hours to prepare a plastisol, and the functional group ratio of the liquid acid anhydride to the polyamine is 1:2;

[0038] After the plastisol was cured at 135° C. for 10 min, the strength of...

Embodiment 2

[0040] Add each component according to the portion in the table. The PVC paste resin resin is an emulsion polymer resin with a degree of polymerization of 1200, the plasticizer is diisodecyl phthalate, the epoxy resin epoxy equivalent is 180, the heat stabilizer is organotin, and the filler is light calcium carbonate. Thixotropic agent is nano-silica, diluent is C 14 isoparaffins. The preparation method of the curing agent is as follows: under stirring at 25° C., liquid methyltetrahydrophthalic anhydride is added dropwise to isophorone polyamine under the protection of inert gas, and the reaction is carried out for 2 hours. At room temperature, the components are mixed and fully dispersed, vacuum defoamed for 2 hours and then matured for 24 hours to prepare a plastisol, and the functional group ratio of the liquid acid anhydride to the polyamine is 1:2;

[0041] After the plastisol was cured at 140° C. for 5 minutes, the strength of the cured product was 5.5 MPa, and the elo...

Embodiment 3

[0043] Add each component according to the portion in the table. The PVC paste resin resin is an emulsion polymer resin with a degree of polymerization of 1300, the plasticizer is diisobutyl phthalate, the epoxy resin epoxy equivalent is 250, the heat stabilizer is organotin, and the filler is light calcium carbonate. Thixotropic agent is nano-silica, diluent is C 18 isoparaffins. The preparation method of the curing agent is as follows: at 20° C. under stirring, under the protection of inert gas, liquid methyl hexahydrophthalic anhydride is added dropwise with diethyl tripress, and the reaction is carried out for 2 hours. At room temperature, the components are mixed and dispersed uniformly, vacuum defoamed for 3 hours and then aged for 12 hours to prepare a plastisol. The functional group ratio of liquid acid anhydride and polyamine is 1:2;

[0044] After the plastisol was cured at 135° C. for 7 minutes, the strength of the cured product was 4.5 MPa, and the elongation wa...

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Abstract

The invention discloses a polyvinyl chloride plastisol and a preparation method and application thereof. The polyvinyl chloride plastisol is prepared from, by weight, 100 parts of PVC paste resin, 1-5 parts of epoxy resin, 0.1-3 parts of a curing agent, 30-100 parts of a plasticizer, 1-3 parts of a heat stabilizer, 5-40 parts of filler, 0.1-2 parts of a thixotropic agent and 0-10 parts of a diluent. The breaking strength of the obtained product can reach 4-6 MPa, and the elongation of the obtained product can reach 200-300%. The polyvinyl chloride plastisol can be used for preparing polyvinyl chloride films. According to the polyvinyl chloride plastisol and the preparation method and application thereof, the strength of a plastisol cured product is effectively improved without influencing the elongation of the plastisol cured product; by using the thermal decomposition curing agent, it is avoided that the epoxy resin is cured ahead of time.

Description

technical field [0001] The present invention relates to a polyvinyl chloride plastisol and its preparation method and application. Background technique [0002] Polyvinyl chloride plastisols are widely used in the automotive industry and in the field of fabric coating. Especially in the automotive industry, its typical products are PVC stone-strike primers and PVC seam sealants, which can also be prepared into PVC films. [0003] At present, the cured products of polyvinyl chloride plastisol products on the market generally have low strength, and the general tensile strength is only 2-3MPa, which limits its application in many aspects. Inorganic fillers are generally added to increase the strength of the plasticized product, but when the strength increases, the elongation is reduced and the brittleness of the cured product is increased. Therefore, how to reduce the strength of the cured polyvinyl chloride plastisol without affecting its pull-up rate has always been an impo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L63/00C08G59/58C08K13/02C08K5/12C08K3/26C08K3/36
Inventor 董炜星沈爱华郑晓峰
Owner SHANGHAI CHLOR ALKALI CHEM
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