Conductive elastomer, preparation method and use thereof

Patent metadata

Field	Value
Publication number	US-10273343-B2
Application number	US-201515541699-A
Country	US
Kind code	B2
Filing date	Jul 20, 2015
Priority date	Jan 6, 2015
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

A preparation method of a conductive elastomer includes the following steps: (1) according to the mass percent of 20˜75%, dissolving the metallic salts into deionized water to form an electrolyte solution, wherein said metallic salts is either of magnesium nitrate, sodium nitrate, zinc nitrate, cesium nitrate, calcium nitrate, neodymium nitrate, aluminum nitrate, potassium nitrate, potassium chloride, magnesium chloride, calcium chloride, sodium chloride, zinc chloride, cesium chloride, aluminum chloride or their combinations; (2) according to the mass percent of 10˜40%, mixing starches into the electrolyte solution prepared in step (1), then at the temperature of 33˜120° C., stirring to gelatinize the starches, forming a viscous liquid; (3) standing the viscous liquid obtained in step (2) at 25˜90° C. for 10 min to 48 h to obtain the conductive elastomer.

First claim

What we claim:

1. A preparation method of a conductive elastomer, consisting of:
(1) according to the mass percent of 20˜75%, dissolving metallic salts into deionized water to form an electrolyte solution, wherein said metallic salts is magnesium nitrate, sodium nitrate, zinc nitrate, cesium nitrate, calcium nitrate, neodymium nitrate, aluminum nitrate, potassium nitrate, potassium chloride, magnesium chloride, calcium chloride, sodium chloride, zinc chloride, cesium chloride, aluminum chloride or a combination thereof;
(2) according to the mass percent of 10˜40%, mixing starches into the electrolyte solution prepared in step (1), then at the temperature of 33˜120° C., stirring to gelatinize the starches, forming a viscous liquid;
(3) standing the viscous liquid obtained in step (2) at 25˜90° C. for 10 min to 48 h to obtain the conductive elastomer.

2. The preparation method of a conductive elastomer according to claim 1 , wherein said metallic salts is zinc nitrate, cesium nitrate, calcium nitrate, neodymium nitrate, aluminum nitrate, potassium nitrate, potassium chloride, calcium chloride, zinc chloride, cesium chloride, aluminum chloride a combination thereof.

3. The preparation method of a conductive elastomer according to claim 1 , wherein said starches is original or modified corn, potato, wheat and barley, cassava, sweet potato, sticky rice starches or a combination thereof.

4. A conductive elastomer prepared according to the method in claim 1 , wherein the resistivity of said conductive elastomer is 1˜1×10 4 Ω·cm; stretch ratio at elastic region is 1000˜2500%, stretch ratio at fracture is 1500%˜9000%; said conductive elastomer has bio-degradability and autofluorescence with emitting wavelength at 400˜500 nm.

5. A conductive elastomer prepared according to the method in claim 2 , wherein said conductive elastomer is water soluble.

Assignees

• Univ Soochow

Inventors

• Lin Xiao
• Yang Lei
• Bai Yanjie
• Yang Huilin

Classifications

• C08K2003/162

  Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride · CPC title

• C08K2003/164

  Aluminum halide, e.g. aluminium chloride · CPC title

• C08K2201/001

  Conductive additives · CPC title

• C08K2003/168

  Zinc halides · CPC title

• C08L3/02

  Starch; Degradation products thereof, e.g. dextrin · CPC title