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Rubber sealing film for coal tar gas and preparation method

A technology of rubber sealing and tar gas, applied in the direction of chemical instruments and methods, applications, household appliances, etc., can solve the problems of poor ozone resistance and weather resistance, achieve advanced equipment, ensure strength requirements, and reduce the number of bonding seams.

Pending Publication Date: 2021-11-30
ANHUI MEIXIANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The characteristics of nitrile rubber: the macromolecular structure of nitrile rubber (NBR) has a polar side nitrile group (-CN), and the intermolecular force is strong, so it has excellent resistance to petroleum-based oils and solvents. Nitrile rubber has strong intermolecular cohesion and small molecular chain gaps, which can effectively prevent the diffusion of gas molecules, but its ozone resistance and weather resistance are poor

Method used

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  • Rubber sealing film for coal tar gas and preparation method
  • Rubber sealing film for coal tar gas and preparation method
  • Rubber sealing film for coal tar gas and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A rubber sealing film for coal tar gas, comprising the following raw materials in parts by weight:

[0045] 100 parts of nitrile rubber, 31 parts of polyvinyl chloride, 3 parts of vulcanizing agent, 16 parts of carbon black, 6 parts of paraffin, 2 parts of anti-aging agent, 3 parts of accelerator, and 6 parts of plasticizer. The accelerator is rubber accelerator DM. The anti-aging agent of the rubber sealing film for coal tar gas is anti-aging agent 4010NA.

[0046] The preparation method of described coal tar gas rubber seal film, comprises the steps:

[0047]S1. Pre-swelling of polyvinyl chloride: Before blending polyvinyl chloride and nitrile rubber, plasticizing and swelling treatment is required. This process is completed on a high-speed kneader.

[0048] S2. The blending of polyvinyl chloride, nitrile rubber, carbon black, paraffin, anti-aging agent, accelerator and plasticizer is carried out on the internal mixer. 168℃~175℃,

[0049] S3. Cord cloth gluing, th...

Embodiment 2

[0056] A rubber sealing film for coal tar gas, comprising the following raw materials in parts by weight:

[0057] 100 parts of nitrile rubber, 31 parts of polyvinyl chloride, 3 parts of vulcanizing agent, 16 parts of carbon black, 6 parts of paraffin, 2 parts of anti-aging agent, 3 parts of accelerator, and 6 parts of plasticizer. The accelerator is rubber accelerator DM. The anti-aging agent of the rubber sealing film for coal tar gas is anti-aging agent 4010NA.

[0058] The preparation method of described coal tar gas rubber seal film, comprises the steps:

[0059] S1. Pre-swelling of polyvinyl chloride: Before blending polyvinyl chloride and nitrile rubber, plasticizing and swelling treatment is required. This process is completed on a high-speed kneader.

[0060] S2. The blending of polyvinyl chloride, nitrile rubber, carbon black, paraffin, anti-aging agent, accelerator and plasticizer is carried out on the internal mixer. 168℃~175℃,

[0061] S3. Cord cloth gluing, t...

Embodiment 3

[0067] A rubber sealing film for coal tar gas, comprising the following raw materials in parts by weight:

[0068] 100 parts of nitrile rubber, 31 parts of polyvinyl chloride, 3 parts of vulcanizing agent, 16 parts of carbon black, 6 parts of paraffin, 2 parts of anti-aging agent, 3 parts of accelerator, and 6 parts of plasticizer. The accelerator is rubber accelerator DM. The anti-aging agent of the rubber sealing film for coal tar gas is anti-aging agent 4010NA.

[0069] The preparation method of described coal tar gas rubber seal film, comprises the steps:

[0070] S1. Pre-swelling of polyvinyl chloride: Before blending polyvinyl chloride and nitrile rubber, plasticizing and swelling treatment is required. This process is completed on a high-speed kneader.

[0071] S2. The blending of polyvinyl chloride, nitrile rubber, carbon black, paraffin, anti-aging agent, accelerator and plasticizer is carried out on the internal mixer. 168℃~175℃,

[0072] S3. Cord cloth gluing, t...

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Abstract

The invention discloses a rubber sealing film for coal tar gas and a preparation method. The rubber sealing film is prepared from the following raw materials in parts by weight: 90-120 parts of butadiene-acrylonitrile rubber, 30-40 parts of polyvinyl chloride, 1-5 parts of a vulcanizing agent, 15-20 parts of carbon black, 5-10 parts of paraffin, 1-3 parts of an anti-aging agent, 1-5 parts of an accelerant and 5-8 parts of a plasticizer. The technical scheme has the following excellent effects: firstly, a preferable framework material and a special framework material are combined, and a *-shaped structure is adopted, so that the product meets the high-strength requirement in the left and right 45-degree angle directions, overcomes tensile deformation in the vertical direction, has enough strength and excellent flexing resistance and flexibility, and is suitable for being used in the field of high-strength plastic products. Therefore, the strength requirement of the product is ensured, the problem of'fisheye '-shaped white half-cooked particles is effectively solved, the width of a single rubber cord fabric produced by our company is about 3m, and the bonding strength and the quality of the product are further ensured.

Description

technical field [0001] The invention belongs to the technical field of floor cloth production, and in particular relates to a rubber sealing film for coal tar gas and a preparation method thereof. Background technique [0002] The composition of coal tar gas is complex, mainly composed of hydrogen sulfide, ammonia, benzene, hydrogen, alkane gas, olefin and other gases mixed with a certain amount of air. Whether the rubber sealing membrane can meet the requirements is an important prerequisite to ensure the safe operation of the gas cabinet. [0003] h 2 The content is higher, and the H 2 The molecular weight is small and easy to penetrate. We found that nitrile rubber is a kind of rubber with better air tightness in general-purpose synthetic rubber, and its air permeability is very low, second only to butyl rubber, and its air permeability decreases with the increase of acrylonitrile content. We can choose imported nitrile rubber with high acrylonitrile content, and then...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L27/06C08L91/06C08K3/04C08K5/47C08K5/18C08K13/02B32B27/02B32B27/34B32B27/12B32B33/00B29D7/01
CPCC08L9/02B32B5/02B32B5/26B32B33/00B29D7/01B32B2262/0261B32B2250/20B32B2250/24B32B2307/558B32B2307/546C08L27/06C08L91/06C08K3/04C08K5/47C08K5/18C08K13/02
Inventor 汪华北李志杰陈金琪
Owner ANHUI MEIXIANG IND
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