Brominated butyl/chlorinated butyl rubber composition and preparation method thereof

The technology of chlorobutyl rubber and bromobutyl rubber is applied in the field of rubber vulcanizate preparation, which can solve the problems of low tensile strength of gas mask cover material, high cover material cost and high price, and achieve excellent anti-virus performance. , low cost, good heat-resistant oxygen aging performance

Inactive Publication Date: 2013-05-08
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Guo Yuexin et al. (BIIR gas mask mask rubber formula design, 2010, Volume 57: 623) used brominated butyl rubber as the mask material, and the formula was 100 parts of BIIR, 3 parts of ZnO, 40 parts of N330, 15 parts of N220, 1 part of Vaseline, 2 parts of paraffin oil, 2 parts of DOS, 2 parts of DOP, 0.5 part of KH-550, 1 part of SA, 1 part of antioxidant, 1 part of TMTD and 0.6 part o

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1

[0034] Weigh 80g of BIIR2222 and 20g of CIIR1066 raw rubber and place them in a blast oven at a constant temperature of 40℃ for 24h, and masticate them on an open mill for 10 minutes, then blend BIIR2222 and CIIR1066 for 5 minutes, and then add 1g of antioxidant And 0.5g of MgO, 1g of stearic acid, 55g of carbon black N220, 1g of paraffin oil, 0.5g of DOP and 0.5g of DBP, 1g of M and 1g of DM, 5g of zinc oxide and 0.3g of sulfur , After the surface of the rubber material is smooth and shiny, pass the film. The rubber compound was parked at room temperature for 24 hours, and its positive vulcanization time at 165°C was measured by a vulcanizer, and vulcanized on a 50t flat vulcanizer according to the positive vulcanization time to obtain a vulcanized rubber. The tensile strength of the prepared vulcanizate is 18.50MPa, the elongation at break is 539%, the tensile strength at 300% is 9.30MPa, and the tear strength reaches 39.45KN. . m -1 , Shore hardness is 55, ...

Example Embodiment

[0035] Example 2

[0036] The rubber matrix in the formula of Example 2 is 100g of BIIR raw rubber. During the operation, the plasticizing time on the BIIR rubber mill is 15 minutes. The other formulas and operation steps are the same as in Example 1. The tensile strength of the prepared vulcanizate is 17.24MPa , The elongation at break is 567%, the tensile strength at 300% is 8.24MPa, and the tear strength reaches 38.19KN . m -1 , Shore hardness is 55, tensile permanent deformation is only 10%, brittleness temperature is -50°C, after hot air aging (70°C×72h), the tensile strength of the vulcanizate is 17.91MPa, and the elongation at break is 543%. The aging coefficient is 100%, and the vulcanized rubber can prevent mustard gas for more than 3600min.

Example Embodiment

[0037] Example 3

[0038] The rubber matrix in the formula of Example 3 is 100g of CIIR raw rubber. During the operation, the mastication time on the CIIR rubber mill is 15 minutes. The other formulas and operation steps are the same as in Example 1. The tensile strength of the prepared vulcanizate is 17.60MPa, the elongation at break is 518%, the tensile strength at 300% is 9.88MPa, and the tear strength reaches 36.63KN . m -1 , Shore hardness is 54, tensile permanent deformation is only 9%, brittleness temperature is -45°C, after hot air aging (70°C×72h), the tensile strength of vulcanizate is 17.62MPa, and the elongation at break is 507%. The aging factor is 98%.

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Abstract

The invention relates to a brominated butyl/chlorinated butyl rubber composition for gas masks. The composition comprises the following components in parts by weight: 100 parts of rubber matrix, 50-60 parts of carbon black N220, 5 parts of zinc oxide, 0.1-0.5 part of sulfur, 1 part of stearic acid, 1-4 parts of plasticizer (paraffin oil: DOP (dioctyl phthalate): DBP (dibutyl phthalate) is 2: 1: 1), 2 parts of promoter, 1 part of anti-aging agent and 0.5 part of anti-scorching agent, wherein the rubber matrix is composed of brominated butyl rubber and chlorinated butyl rubber. As for vulcanized rubber prepared by using the brominated butyl/chlorinated butyl rubber composition, the tensile strength is 18.50MPa, the elongation at fracture is 539%, the 300% stretching strength is 9.30MPa, the tearing strength is 39.45kN.m<-1>, the Shore hardness is 54, the tension set is 10%, and the brittleness temperature is -50 DEG C; and after the vulcanized rubber is aged in hot air (70 DEG C * 72h), the tensile strength is 17.91MPa, the elongation at fracture is 569%, the aging coefficient achieves 100%, the sustainable time of resisting mustard gas of the vulcanized rubber is greater than 3600min, and the comprehensive performances of the vulcanized rubber can completely meet the performance requirements of cover body materials of the gas masks.

Description

technical field [0001] The invention relates to the technical field of rubber vulcanizate preparation, in particular to a blend of brominated butyl rubber and chlorinated butyl rubber used in gas mask rubber. Background technique [0002] Gas masks appeared after the use of poison in Germany in World War I. They are mainly used to protect the user's face, eyes and respiratory system from toxic gases and liquids, and to regulate the air. Therefore, it is usually required that the gas mask mask material has a long protection time against toxic gas or liquid, good weather aging resistance and thermal oxygen aging resistance, good low temperature resistance, good elasticity, small deformation, and should not change with temperature. It has large fluctuations, is non-toxic, harmless, non-irritating to the skin, has no special smell, has good process performance, and is convenient for processing and manufacturing. [0003] Early gas mask masks were made of natural rubber. Later, ...

Claims

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Application Information

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IPC IPC(8): C08L23/28C08K13/02C08K3/04C08K3/22C08K3/06C08K5/09
Inventor 贾红兵房尔园王经逸熊晓刚汤颖颖许金楼武涛李健
Owner NANJING UNIV OF SCI & TECH
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