US 12,441,921 B2
Silicate-modified polymer grouting material for leakage plugging
Peng Zhao, Henan (CN); Hongyuan Fang, Henan (CN); Lei Wang, Guangdong (CN); Mingrui Du, Guangdong (CN); Yanhui Pan, Henan (CN); and Hui Liu, Henan (CN)
Assigned to SAFEKEY Engineering Technology (Zhengzhou), Ltd., Henan (CN); and Huizhou Mingsheng Chemical Materials Co., LTD., Guangdong (CN)
Filed by SAFEKEY Engineering Technology (Zhengzhou), Ltd., Henan (CN); and Huizhou Mingsheng Chemical Materials Co., LTD.
Filed on Sep. 15, 2022, as Appl. No. 17/945,430.
Claims priority of application No. 202210109293.1 (CN), filed on Jan. 28, 2022.
Prior Publication US 2023/0041315 A1, Feb. 9, 2023
Int. Cl. C09K 3/12 (2006.01)
CPC C09K 3/12 (2013.01) 2 Claims
 
1. A silicate-modified polymer material for leakage plugging, comprising: prepolymerized isocyanate and silicate modified aqueous solution with a mass ratio at a range of 1:(1.2-1.4), wherein the prepolymerized isocyanate is a prepolymer obtained by the polymerization of trimethylol phosphine oxide and TDI, and has a chemical structural formula as follows:

OG Complex Work Unit Chemistry
wherein P content of the prepolymerized isocyanate is 4.7%, N content of the prepolymerized isocyanate is 12.7%, and NCO % content of the prepolymerized isocyanate is 19%;
wherein the silicate-modified aqueous solution comprises: liquid sodium silicate, water, and a catalyst; wherein the liquid sodium silicate accounts for 82-87% of the silicate-modified aqueous solution by weight, and the water accounts for 12-15% by weight of the silicate-modified aqueous solution, and the catalyst accounts for 1.5-2.5% by weight of the silicate-modified aqueous solution;
wherein the liquid sodium silicate is an aqueous solution of sodium silicate, and a Baume degree thereof is 40;
wherein the catalyst is a diethylene glycol solution of triethylenediamine with a concentration of 33%.