Cement materials including shape memory polymer and methods of making cement materials

Patent metadata

Field	Value
Publication number	US-10876030-B2
Application number	US-201716095058-A
Country	US
Kind code	B2
Filing date	Apr 20, 2017
Priority date	Apr 21, 2016
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

Embodiments of the present disclosure provide for modified cement material, methods of reducing or stopping cement shrinkage, methods of making modified cement material, and the like.

First claim

We claim at least the following:

1. A modified cement material, comprising:
a cement slurry material including a shape memory polymer additive, wherein the shape memory polymer is in a programmed state; and
wherein the shape memory polymer is an ionomer.

2. The material of claim 1 , wherein the shape memory polymer is about 0.01-10 weight percent of the cement slurry material or cured cement material.

3. The material of claim 1 , wherein the shape memory polymer is poly(ethylene-co-methacrylic acid).

4. A modified cement material, comprising:
a cement slurry material including a shape memory polymer additive, wherein the shape memory polymer is in an activated state, and wherein the shape memory polymer is about 0.01-10 weight percent of the cement slurry material or modified cement material; and
wherein the shape memory polymer is an ionomer.

5. The material of claim 4 , wherein the shape memory polymer is a poly(ethylene-co-methacrylic acid).

6. A modified cement material, comprising:
a cured cement material including a shape memory polymer additive, wherein the shape memory polymer is in an activated state; and
wherein the shape memory polymer is an ionomer.

7. The material of claim 6 , wherein the shape memory polymer is about 0.01-10 weight percent of the cured cement material.

8. The material of claim 6 , wherein the shape memory polymer is a thermoplastic shape memory polymer selected from the group consisting of: poly(ethylene-co-methacrylic acid), ethylene-methacrylic acid copolymer, polyether ether ketone (PEEK), polypropylene (PP), polystyrene, polyurethane, polynorbornene, polyester, polyether, polyethylene terephthalate (PET), polyethyleneoxide (PEO), poly(1,4-butadiene), poly(vinyl acetate), polyamide-6 (nylon-6), poly(tetrahydrofuran), poly(2-methyl-2-oxazoline), poly(ethylene adipate), MDI/1,4-butanediol, poly(e-caprolactone), poly vinyl chloride, polyethylene/polyamide blend, and a combination thereof.

9. A method of stopping or reducing shrinkage in cement, comprising:
disposing a shape memory polymer additive into cement slurry to form a modified cement slurry material, wherein the shape memory polymer is an ionomer in a programed state;
exposing the modified cement slurry material to an activation temperature, thereby causing the shape memory polymer additive to expand; and
exposing the modified cement slurry material to a formation temperature to set into a modified cement material, wherein the activation temperature of the shape memory polymer is less than the formation temperature of the cement.

10. The method of claim 9 , wherein the activation temperature is about 10 to 120° C.

11. The method of claim 9 , wherein the shape memory polymer is poly(ethylene-co-methacrylic acid).

Assignees

• Dahi Taleghani Arash
• Li Guoqiang
• Univ Louisiana State

Inventors

• Dahi Taleghani Arash
• Li Guoqiang

Classifications

• C04B2103/0045

  Polymers chosen for their physico-chemical characteristics · CPC title

• C04B28/02

  containing hydraulic cements other than calcium sulfates · CPC title

• C04B24/28

  obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds {(C04B24/243 takes precedence)} · CPC title

• C04B2111/346

  Materials exhibiting reduced plastic shrinkage cracking · CPC title

• C04B24/282

  Polyurethanes; Polyisocyanates · CPC title