Title:
USE OF GRAPHENE OXIDE/BUTYL ACRYLATE/SILANE COMPOSITE EMULSION AS SHRINKAGE REDUCING AGENT
Document Type and Number:
WIPO Patent Application WO/2023/272845
Kind Code:
A1
Abstract:
Provided is the use of a graphene oxide/butyl acrylate/silane composite emulsion as a shrinkage reducing agent for cement-based materials, which belongs to the technical field of cement-based materials. Active groups on isobutyltriethoxysilane molecules react with hydroxyl groups on the surface of mortar to form a layered hydrophobic structure, such that the loss of water in the mortar of a cement-based material is slowed down and cracking caused by drying shrinkage is avoided. Butyl acrylate can be dehydrated to form spatial network polymer fibers, which fill the pores of cement paste and consequently restrict the shrinkage of the mortar. Graphene oxide, with a large specific surface area and oxygen-containing functional groups on the surface, can provide growth sites for a hydration product and promote the formation of a regular and dense structure from the hydration product in the manner of a template, thereby ensuring the strength of the cement-based material. When blended into the cement-based material, sodium silicate can be hydrolyzed to form a silica gel, and the silica gel can react with calcium ions to form a C-S-H gel that fills the pores of a matrix, such that the early strength of the cement-based material is improved.
Inventors:
LI SHAOCHUN (CN)
XU SHILIN (CN)
LIU ANG (CN)
GENG YONGJUAN (CN)
HOU DONGSHUAI (CN)
ZHANG RUIYONG (CN)
JIN ZUQUAN (CN)
GAO SONG (CN)
XU SHILIN (CN)
LIU ANG (CN)
GENG YONGJUAN (CN)
HOU DONGSHUAI (CN)
ZHANG RUIYONG (CN)
JIN ZUQUAN (CN)
GAO SONG (CN)
Application Number:
PCT/CN2021/108635
Publication Date:
January 05, 2023
Filing Date:
July 27, 2021
Export Citation:
Assignee:
UNIV QINGDAO TECHNOLOGY (CN)
International Classes:
C04B24/42; C04B28/00; C08F2/44; C08F120/18
Foreign References:
| CN104058676A | 2014-09-24 | |||
| CN101746988A | 2010-06-23 |
Other References:
CHEN XU, LI SHAOCHUN; LU XIAO; LIU SHUAI; LI KAI: "Protective Effect of Silane Material on Drying Shrinkage Crack of Concrete", CHINA CONCRETE = HUNNINGTU, CN, no. 1, 27 January 2019 (2019-01-27), CN , pages 150 - 152, XP093017934, ISSN: 1002-3550, DOI: 10.3969/j.issn.1002-3550.2019.01.036
ZHANG YOULAI, SHAOCHUN LI, DONGSHUAI HOU, QILONG XIAO: "Effect of GO / Silane Composite Emulsion on Impermeability of Concrete", PAINT & COATINGS INDUSTRY, HUAGONGBU TULIAO GONGYE YANJIUSUO, NANJING, CN, vol. 48, no. 7, 1 July 2018 (2018-07-01), CN , XP093017936, ISSN: 0253-4312
SUN GANG: "Effect of Styrene Acrylic Emulsion on the Carbonation Property of Modified Concrete", NORTHERN ARCHITECTURE, vol. 2, no. 6, 28 December 2017 (2017-12-28), pages 38 - 40, XP093017939, ISSN: 2096-2118
ZHANG YOULAI, SHAOCHUN LI, DONGSHUAI HOU, QILONG XIAO: "Effect of GO / Silane Composite Emulsion on Impermeability of Concrete", PAINT & COATINGS INDUSTRY, HUAGONGBU TULIAO GONGYE YANJIUSUO, NANJING, CN, vol. 48, no. 7, 1 July 2018 (2018-07-01), CN , XP093017936, ISSN: 0253-4312
SUN GANG: "Effect of Styrene Acrylic Emulsion on the Carbonation Property of Modified Concrete", NORTHERN ARCHITECTURE, vol. 2, no. 6, 28 December 2017 (2017-12-28), pages 38 - 40, XP093017939, ISSN: 2096-2118
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
Download PDF: