Rubber compositions and uses thereof

• US 9,663,640 B2
• Filed: 12/19/2014
• Issued: 05/30/2017
• Est. Priority Date: 12/19/2013
• Status: Active Grant

• Current Assignee: Soucy Techno Inc. (Soucy Holding Incorporated)
• Original Assignee: Soucy Techno Inc. (Soucy Holding Incorporated)
• Inventors: Bdard, Franois, Dub, Denis, MacDonald, Lyle, Cou, Jean-Damien
• Primary Examiner(s): PEPITONE, MICHAEL F
• Application Number:
  US15/035,095
• Publication Number:
  US 20160280895A1
• Time in Patent Office: 893 Days
• CPC Class Codes: C08J 2321/00 Characterised by the use of unspecified rubbers
• CPC Class Codes: C08J 3/20 Compounding polymers with additives, e.g. colouring
• CPC Class Codes: C08J 3/226 using a polymer as a carrier
• CPC Class Codes: C08K 3/04 Carbon
• CPC Class Codes: C08K 3/041 Carbon nanotubes
• CPC Class Codes: C08K 3/36 Silica
• CPC Class Codes: C08K 7/02 Fibres or whiskers
• CPC Class Codes: C08L 11/00 Compositions of homopolymers or copolymers of chloroprene
• CPC Class Codes: C08L 21/00 Compositions of unspecified rubbers

Abstract

There are provided rubber compositions comprising an elastomer comprising polychloroprene; reinforcing fibers chosen from aramid fibers, carbon fibers, polyester fibers, glass fibers, nylon fibers and mixtures thereof, and/or nanometric filamentary structures chosen from nanowires, nanorods, nanofibers, nanoribbons, nanotubes and mixtures thereof, said nanometric filamentary structures being functionalized or unfunctionalized; and a filler chosen from carbon black and silica. These compositions, when cured, comprises at least one set of characteristics chosen from those described in the application.

Claims

1. A rubber composition comprising:

about 40 to about 75 wt. % of an elastomer comprising polychloroprene;

about 0.1 to about 10 wt. % of reinforcing fibers that are aramid fibers;

about 0.1 to about 10 wt. % of nanometric filamentary structures that are carbon nanotubes, said nanometric filamentary structures being functionalized or unfunctionalized; and

about 15 to about 40 wt. % of a filler selected from the group consisting of carbon black and silica,

wherein said composition, when cured, comprises at least one set of characteristics selected from the group consisting of

a hardness of at least 60 shore A, measured according to ASTM D-2240 and a DIN abrasion of less than 125 mm³, measured according to according to ASTM D-5963 standard;

a 100% modulus of at least 300 psi, measured according to ASTM D-412 standard and a DIN abrasion of less than 125 mm³, measured according to according to ASTM D-5963 standard;

a hardness of at least 60 shore A, measured according to ASTM D-2240 and a DIN abrasion of less than 125 mm³, and a wear resistance of less than 175 mg, measured according to Dupont SJE test;

a 100% modulus of at least 300 psi, measured according to ASTM D-412 standard and a wear resistance of less than 175 mg, measured according to Dupont SJE test;

a hardness of at least 60 shore A, measured according to ASTM D-2240, a 100% modulus of at least 300 psi, measured according to ASTM D-412 standard and a DIN abrasion of less than 125 mm³, measured according to according to ASTM D-5963 standard; and

a hardness of at least 60 shore A, measured according to ASTM D-2240, a 100% modulus of at least 300 psi, measured according to ASTM D-412 standard and a wear resistance of less than 175 mg, measured according to Dupont SJE test.

2. The composition of claim 1, wherein said composition comprises about 45 to about 70 wt. % of said elastomer.

3. The composition of claim 1, wherein said composition comprises about 54 to about 60 wt. % of said elastomer.

4. The composition of claim 1, wherein said composition comprises about 50 to about 55 wt. % of said elastomer.

5. The composition of claim 1, wherein said composition comprises about 45 to about 55 wt. % of said elastomer.

6. The composition of claim 2, wherein said composition comprises about 1.5 to about 10 wt. % of said reinforcing fibers.

7. The composition of claim 2, wherein said composition comprises about 1.5 to about 2.0 wt. % of said reinforcing fibers.

8. The composition of claim 1, wherein said composition comprises about 0.25 to about 1.75 wt. % of said nanometric filamentary structures.

9. The composition of claim 6, wherein said composition comprises about 0.5 to about 1.5 wt. % of said nanometric filamentary structures.

10. The composition of claim 1, wherein said composition comprises about 0.1 to about 10 wt. % of said reinforcing fibers and/or nanometric filamentary structures.

11. The composition of claim 2, wherein said composition comprises about 0.5 to about 10 wt. % of said reinforcing fibers and/or nanometric filamentary structures.

12. The composition of claim 11, wherein said composition comprises about 15 to about 25 wt. % of said filler.

13. The composition of claim 9, wherein said composition, when cured, comprises at least one set of characteristics selected from the group consisting of

a hardness of at least 60 shore A, measured according to ASTM D-2240 and a DIN abrasion of less than 125 mm³, measured according to according to ASTM D-5963 standard;

a 100% modulus of at least 300 psi, measured according to ASTM D-412 standard and a DIN abrasion of less than 125 mm³, measured according to according to ASTM D-5963 standard; and

a hardness of at least 60 shore A, measured according to ASTM D-2240, a 100% modulus of at least 300 psi, measured according to ASTM D-412 standard and a DIN abrasion of less than 125 mm³, measured according to according to ASTM D-5963 standard.

14. The composition of claim 1, wherein said composition, when cured, comprises a hardness of at least 60 shore A, measured according to ASTM D-2240 and a DIN abrasion of less than 125 mm³, measured according to according to ASTM D-5963 standard.

15. The composition of claim 1, wherein said composition, when cured, comprises a 100% modulus of at least 300 psi, measured according to ASTM D-412 standard and a DIN abrasion of less than 125 mm³, measured according to according to ASTM D-5963 standard.

16. The composition of claim 1, wherein said composition, when cured, comprises a hardness of at least 60 shore A, measured according to ASTM D-2240, a 100% modulus of at least 300 psi, measured according to ASTM D-412 standard and a DIN abrasion of less than 125 mm³, measured according to according to ASTM D-5963 standard.

17. The composition of claim 1, wherein said composition, when cured, comprises a hardness of about 60 to about 75 shore A, measured according to ASTM D-2240 and a DIN abrasion of about 80 to about 100 mm³, measured according to according to ASTM D-5963 standard.

18. The composition of claim 1, wherein said composition, when cured, comprises a 100% modulus of about 700 psi to about 1100 psi, measured according to ASTM D-412 standard and a DIN abrasion of about 80 to about 100 mm³, measured according to according to ASTM D-5963 standard.

19. The composition of claim 1, wherein said composition, when cured, comprises a hardness of about 60 to about 75 shore A, measured according to ASTM D-2240 and a DIN abrasion of about 80 to about 100 mm³, and a wear resistance of about 50 to about 150 mg, measured according to Dupont SJE test.

20. The composition of claim 1, wherein said composition, when cured, comprises a 100% modulus of about 700 psi to about 1100 psi, measured according to ASTM D-412 standard and a wear resistance of about 50 to about 150 mg, measured according to Dupont SJE test.

21. The composition of claim 1, wherein said composition, when cured, comprises a hardness of about 60 to about 75 shore A, measured according to ASTM D-2240, a 100% modulus of about 700 psi to about 1100 psi, measured according to ASTM D-412 standard and a DIN abrasion of about 80 to about 100 mm³, measured according to according to ASTM D-5963 standard.

22. The composition of claim 1, wherein said composition, when cured, comprises a hardness of about 60 to about 75 shore A, measured according to ASTM D-2240, a 100% modulus of about 700 psi to about 1100 psi, measured according to ASTM D-412 standard and a wear resistance of about 50 to about 150 mg, measured according to Dupont SJE test.