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Title:
LIGNOSULFONATE DISPERSION SELF-HEALING POLYUREA COATING, PREPARATION METHOD THEREFOR, COATING LAYER THEREOF AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/134416
Kind Code:
A1
Abstract:
A lignosulfonate dispersion self-healing polyurea coating and a preparation method therefor; the coating is obtained by reacting the following components in parts by mass: 1-10 parts of microcapsules of a lignosulfonate embedded healing agent; 10-100 parts of a polyurea prepolymer; 20-120 parts of a mixed solution of an amino-terminated polyether and a sterically hindered amine chain extender. The preparation method for the coating comprises the steps of: adding the microcapsules of the lignosulfonate embedded healing agent and the mixed solution of the amino-terminated polyether and the sterically hindered amine chain extender into the polyurea prepolymer at room temperature, and reacting at room temperature for 10 min-4 h. The self-healing polyurea coating may be applied to the field of material surface protection, i.e., the corrosion protection of steel structures, especially marine steel structures.

Inventors:
QIAN, Yong (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
QIU, Xueqing (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
LI, Lan (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
YANG, Dongjie (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
LIU, Weifeng (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
OUYANG, Xinping (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
LOU, Hongming (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
YI, Conghua (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
Application Number:
CN2018/110449
Publication Date:
July 11, 2019
Filing Date:
October 16, 2018
Export Citation:
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Assignee:
SOUTH CHINA UNIVERSITY OF TECHNOLOGY (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
International Classes:
C09D175/02; C08G18/64; C09D5/08
Foreign References:
CN108219641A2018-06-29
CN85102011A1987-01-10
CN107312140A2017-11-03
CN107474615A2017-12-15
CN106943969A2017-07-14
CN101125290A2008-02-20
US4280833A1981-07-28
US4417916A1983-11-29
Other References:
HE, ZHENGLONG ET AL.: "Preparation of Polyurea Microcapsules and Its Application on Self-Healing Materials", PROCEEDINGS OF 18TH ANNUAL CONFERENCE OF CHINA POLYURETHANE INDUSTRY ASSOCIATION, 30 July 2016 (2016-07-30), pages 464 - 468
Attorney, Agent or Firm:
GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD. (1st Floor, Material BuildingNo. 381 Wushan Road, Tianhe Distric, Guangzhou Guangdong 0, 510640, CN)
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