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Brominated butyl rubber/silicon rubber formula and preparation method thereof

A technology of bromobutyl rubber and silicone rubber, applied in the field of rubber materials, can solve the problems of life danger and low barrier performance, and achieve the effects of meeting performance requirements, improving wearing comfort, and good anti-virus performance.

Inactive Publication Date: 2017-09-22
HUBEI HUAQIANG HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silicone rubber cannot be directly applied to the gas mask body, because silicone rubber has extremely low barrier properties to gases, and toxic gases can easily penetrate silicone rubber, which will cause people to be directly exposed to poisonous gas and cause life-threatening

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Table 1 is the mass parts of each component adopting the above-mentioned preparation method:

[0036] serial number

raw material

Dosage (number of parts by mass)

1

Bromobutyl rubber 2244

100

2

Silicone Rubber

5

3

Zinc oxide

3

4

stearic acid

1

5

carbon black

40

6

Talc powder

15

7

vaseline

2

8

Paraffin oil

5

9

Paraffin

1

10

Zinc Dimethyl Dithiocarbamate

0.2

11

Dipentamethylene thiuram tetrasulfide

2

12

DCP

0.8

[0037] Performance test data of rubber compound:

[0038] The tensile strength is 13.6MPa, the elongation at break is 630%, the Shore A hardness is 50, the permanent deformation at break is 20%, and the tear strength is 29.2MPa. The anti-mustard gas droplet time was 13 hours and 15 minutes.

Embodiment 2

[0040] Table 2 is the mass parts of each component adopting the above-mentioned preparation method:

[0041] serial number

raw material

Dosage (number of parts by mass)

1

Bromobutyl rubber 2244

95

2

Silicone Rubber

5

3

Zinc oxide

3

4

stearic acid

1.2

5

carbon black

30

6

Talc powder

15

7

vaseline

1

8

Paraffin oil

3

9

Paraffin

1

10

Zinc diethyldithiocarbamate

0.2

11

Dipentamethylene thiuram tetrasulfide

2

12

DCP

1

[0042] Performance test data of rubber compound:

[0043] The tensile strength is 13.8MPa, the elongation at break is 700%, the Shore A hardness is 46, the permanent deformation at break is 20%, and the tear strength is 28.3MPa. The anti-mustard droplet time was 12 hours and 59 minutes.

Embodiment 3

[0045] Table 3 is the mass parts of each component adopting above-mentioned preparation method:

[0046] serial number

raw material

Dosage (number of parts by mass)

1

Bromobutyl rubber 2244

92

2

Silicone Rubber

8

3

Zinc oxide

5

4

stearic acid

1.5

5

carbon black

40

6

Talc powder

10

7

vaseline

3

8

Paraffin oil

4

9

Paraffin

1

10

Zinc dibutyldithiocarbamate

0.25

11

Tetramethylthiuram disulfide

1.5

12

DCP

0.6

[0047] Performance test data of rubber compound:

[0048]The tensile strength is 12.6MPa, the elongation at break is 610%, the Shore A hardness is 49, the permanent deformation at break is 20%, and the tear strength is 31.1MPa. The anti-mustard droplet time was 11 hours and 14 minutes.

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Abstract

The invention discloses a brominated butyl rubber / silicon rubber formula and a preparation method thereof, and belongs to the field of a rubber material. The brominated butyl rubber / silicon rubber is prepared from the following ingredients in parts by weight: 90 to 100 parts of brominated butyl rubber, 5 to 10 parts of silicon rubber, 3 to 5 parts of zinc oxide, 1 to 2 parts of stearic acid, 30 to 50 parts of carbon black, 0 to 20 parts of filling materials, 1 to 3 parts of vaseline, 3 to 5 parts of paraffin oil, 1 to 3 parts of paraffin, 1.7 to 2.5 parts of accelerating agents and 0.5 to 1 part of vulcanizing agents. The prepared brominated butyl rubber / silicon rubber has good physical and mechanical properties; the mustard gas liquid drip resistance time can reach 11 to 13 hours, and is much longer than the value of at least 60h specified in GJB1155A-2004 General Specification of Filtered Gas Mask. The silicon rubber is added, so that the wearing comfort of the human body is improved; the performance requirements of the gas mask cover materials can be met.

Description

technical field [0001] The patent of the invention relates to a formula of bromobutyl rubber / silicone rubber and a preparation method thereof, belonging to the field of rubber materials. Background technique [0002] Gas mask is a kind of respiratory protective equipment, which is mainly used to protect the user's face, eyes and respiratory system from toxic gases and liquids. The early cover materials are mainly made of natural rubber, such as US military M17, M24, M25, British S6, etc., with the development of synthetic rubber industry and new materials, materials such as halogenated butyl rubber, silicone rubber, EPDM rubber, and polyurethane have begun to appear in cover materials. Among them, halogenated butyl rubber has become the first choice of cover material because of its dense side methyl group, excellent barrier performance and good processing performance, such as Italian M90, Belgian BEM4GP, Canadian C4, British S10, and Chinese FMJ08 type wait. However, the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08L83/04C08L91/06C08K13/02C08K3/22C08K3/34C08K3/04C08K5/09C08K5/39C08K5/40B29B7/00
CPCC08L23/28B29B7/007C08K2003/2296C08L2205/03C08L83/04C08L91/06C08K13/02C08K3/22C08K3/34C08K3/04C08K5/09C08K5/39C08K5/40
Inventor 荣文楚文军陈丑和唐国庆
Owner HUBEI HUAQIANG HIGH TECH CO LTD
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