Polymer expanding material used in infiltration or seepage watery environment and preparation method thereof

Patent metadata

Field	Value
Publication number	US-11618802-B2
Application number	US-202016858734-A
Country	US
Kind code	B2
Filing date	Apr 27, 2020
Priority date	Apr 27, 2020
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

The present invention relates to a polymer expanding material in infiltration or seepage multi-water environment and a preparation method thereof, belonging to a technical field of polymer expanding foam materials. The polymer expanding material includes the following parts of materials by weight: 20-30 parts of rosin polyester polyol, 20-50 parts of isocyanate, 20-40 parts of PhireGuard® MB-512, 5-10 parts of HFO-1233zd, 1-2 parts of surfactant, 0.01-1 part of catalyst, and 0.01 parts of benzoyl chloride. The present invention has high sand fixing body strength, fast curing speed, good elastoplasticity, good pouring property and permeability, and good expanding property, which is suitable for infiltration or seepage multi-water environment, especially for dam infiltration, piping, and other problems during construction and subsequent operation of water conservancy projects.

First claim

What is claimed is:

1. A preparation method of a polymer expanding material in infiltration or seepage watery environment, comprising steps of:
1) adding 20-30 parts of rosin polyester polyol, 20-50 parts of isocyanate, 20-40 parts of chloroalkyl polyphosphate ester and 1-2 parts of surfactant into a reaction kettle, and stirring mixtures well;
2) replacing air in the reaction kettle with nitrogen gas;
3) heating the reaction kettle to 70-80° C., from when keeping reacting for 1-3 hours; and
4) cooling the reaction kettle to 25-30° C.; and then adding 5-10 parts of 1-chloro-3,3,3-trifluoropropene (HFO-1233zd) 0.01-1 part of catalyst and 0.01 part of benzoyl chloride into the reaction kettle, and stirring obtained mixtures for 10-30 minutes.

2. The preparation method, as recited in claim 1 , wherein the isocyanate is any one or a combination of two of polymethylene polyphenyl isocyanate, diphenylmethane diisocyanate, and toluene diisocyanate.

3. The preparation method, as recited in claim 1 , wherein the surfactant is sorbitan monooleate.

4. The preparation method, as recited in claim 1 , wherein the surfactant is sorbitan oleate.

5. The preparation method, as recited in claim 1 , wherein the catalyst is 4,4′-(oxydi-2,1-ethanediyl)bismorpholine.

Assignees

• Univ Zhengzhou
• Safekey Engineering Tech Zhengzhou Ltd

Inventors

• Fang Hongyuan
• Zhao Peng
• Wang Lei
• Pan Yanhui
• Li Bin
• Li Manjun
• Yang Kangjian

Classifications

• C08G18/7664 Primary

  containing alkylene polyphenyl groups · CPC title

• C08G18/42 Primary

  Polycondensates having carboxylic or carbonic ester groups in the main chain · CPC title

• E02B3/10

  Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like (making embankments or dams in general E02D17/18) · CPC title

• Y02A10/11

  Hard structures, e.g. dams, dykes or breakwaters · CPC title

• C08K5/521

  Esters of phosphoric acids, e.g. of H3PO4 · CPC title