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Title:
HIGH-TEMPERATURE NON-STICK EMULSIFIED ASPHALT, PREPARATION METHOD THEREFOR AND APPLICATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/115089
Kind Code:
A1
Abstract:
Disclosed in the present application are a method for preparing high-temperature non-stick emulsified asphalt and an application thereof in a waterproof bonding layer, which relate to the technical field of road materials. The emulsified asphalt comprises the following components in percentage of the total mass thereof: 45%-65% matrix asphalt, 1-10% reinforcing and toughening agent, 1-5% polymer viscosity-reducing modifier, 1-10% aqueous tackifying emulsion, 0.1%-2% emulsifier, 1-2% pH modifier, and 0.2-1% stabilizer, the rest being water. The preparation method comprises: (1) mixing matrix asphalt, a reinforcing and toughening agent, and a polymer viscosity-reducing agent, and then heating to 160-190°C and stirring to develop for 4-6 h; (2) then adding an asphalt emulsifier and a stabilizer to water, adjusting the pH value to 2-3, and adjusting the temperature to 50-70°C to formulate a soap liquid; (3) using a colloid mill to perform high-speed shearing on the prepared modified asphalt and soap liquid together so as to obtain emulsified asphalt, adding an aqueous tackifying emulsion, and stirring uniformly to obtain high-temperature non-stick emulsified asphalt. When used as a waterproof bonding layer of a bridge deck, the present application has the effects of demulsification speed being high, high-temperature construction being non-stick, high-temperature drawing strength being high, and the waterproof effect being good.

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Inventors:
CHEN LIFENG (CN)
ZANG DONGDONG (CN)
CHEN XIANG (CN)
PAN YOUQIANG (CN)
Application Number:
PCT/CN2020/130215
Publication Date:
June 17, 2021
Filing Date:
November 19, 2020
Export Citation:
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Assignee:
JIANGSU SINOROAD TRAFFIC SCIENCE AND TECH CO LTD (CN)
International Classes:
C08L95/00; C09J195/00
Foreign References:
CN105907020A2016-08-31
CN104448848A2015-03-25
CN109370513A2019-02-22
CN108997766A2018-12-14
CN109054409A2018-12-21
KR20130002654A2013-01-08
Attorney, Agent or Firm:
BEIJING LAWSING IP FIRM (CN)
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