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Method for chemical-modification reclaimed rubber asphalt waterproofing paint

A technology of asphalt waterproof coating and chemical modification, applied in recycled rubber coatings, asphalt coatings, antifouling/underwater coatings, etc. The effect of strength and tensile strength improvement

Inactive Publication Date: 2008-01-30
ZHONGHONG (TIANJIN) IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the waterproof coating with reclaimed rubber asphalt as the main raw material has low adhesion to the base surface and low strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Embodiment 1: A kind of method of chemically modified reclaimed rubber asphalt waterproof coating, according to 40 order tread rubber powder 200g, No. 60 petroleum asphalt 40g, No. 200 petroleum asphalt 10g, 420 activator 4g, rosin 4g feeds in proportion, throws into In a reactor equipped with a high-speed stirring device, react for 2 hours at a reaction temperature of about 220°C, then put 14g of modifier maleic anhydride at the same temperature, and continue to stir and react at 200°C for 15 minutes. After the reaction regenerated rubber is mixed, it is miscible with 850g toluene and dispersed by a high-speed disperser.

Embodiment 2

[0007] Example 2: A method for chemically modifying reclaimed rubber asphalt waterproof coating, after kneading and desulfurizing 200g of reclaimed rubber, containing 30g of No. 60 petroleum asphalt mixed with 600g of toluene, adding 10g of maleic anhydride, at 110-115 Reflux reaction at ℃ for 2 hours, the reaction mixture is dissolved by a high-speed disperser and then coated.

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PUM

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Abstract

The invention relates to a preparation method of a chemical modified bitumen reclaimed rubber and asphalt waterproof coating. According to the proportions of 200g 40 mesh tread compound power, 40g No. 60 petroleum asphalt, 10g No. 200 petroleum asphalt, 4g 420 activator and 4g rosin, materials are put into a reactor provided with a high-speed stirring device and reacted for 2 hours when the reaction temperature is about 220 DEG C; then 14g modifier maleic anhydride is added at the same temperature and the mixture is continued to be stirred at 200 DEG C and reacted for 15min; after mixing, the modified reaction reclaimed rubber is added with 850g toluene and the mixture is dispersed by a high speed stirrer. The invention has the advantages of improving adhesive strength and tensile strength.

Description

technical field [0001] The invention relates to a method for chemically modifying reclaimed rubber asphalt waterproof paint. Background technique [0002] At present, the waterproof coating with reclaimed rubber asphalt as the main raw material has low adhesion to the base surface and low strength. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned defects and provide a method for chemically modifying reclaimed rubber asphalt waterproof coating. [0004] The technical solution of the present invention is: a method of chemically modifying reclaimed rubber asphalt waterproof coating, which is characterized in that: before the end of the waste rubber powder desulfurization reaction, the maleic anhydride modifier is directly mixed and reacted at 200 ° C for 15-30 Minutes, the amount of modifier added is not more than 50% of the weight of the desulfurized reclaimed rubber, and then a certain amount of asphalt and solvent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D117/00C09D5/16C09D195/00C09D193/04
Inventor 张云波
Owner ZHONGHONG (TIANJIN) IND CO LTD
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