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Natural rubber, butyl rubber, membrane composite gasket and its production process

A technology of natural rubber and butyl rubber, applied in the direction of rubber layered products, synthetic resin layered products, layered products, etc., can solve the problems of difficult to maintain the properties of reagents, poor resilience of butyl rubber, deviation of test results, etc.

Active Publication Date: 2019-07-26
浙江欧尔赛斯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the sampler passes through the gasket to take out the reagent into the sample bottle, the butyl rubber has poor resilience and is not easy to seal the punctured hole, thus easily causing the volatile reagent to be detected to leak to the outside through the hole Not only does it affect the detection effect, some volatile and toxic reagents leak out from the hole, and it is easy to threaten the personal health of the operator; and the chemical resistance of the butyl rubber layer is not good enough, and it is easy to break out with the reagent after contact with the reagent. Reaction, it is not easy to maintain the original properties of the reagents, resulting in deviations in test results

Method used

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  • Natural rubber, butyl rubber, membrane composite gasket and its production process
  • Natural rubber, butyl rubber, membrane composite gasket and its production process
  • Natural rubber, butyl rubber, membrane composite gasket and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] Embodiment 1: natural rubber, butyl rubber, film material clad gasket, such as figure 1 Shown, comprise natural rubber layer 1, butyl rubber layer 2 and coating layer 3 successively, wherein, the component in natural rubber layer 1, butyl rubber layer 2 and corresponding parts by weight thereof are as shown in table 1, And it is prepared by the following production process:

[0122] S1, butyl rubber layer 2 ingredients mixing: weigh bromobutyl rubber, calcium carbonate, second toner, sulfur, vaseline, and low molecular weight polyethylene in butyl rubber layer 2, and fully mix to form the first mixture ;

[0123] S2, butyl rubber layer 2 rubber mixing, sheet production: the first mixture obtained in step S1 is mixed, the temperature of the mixing operation is 90°C, and the sheet is produced to form a regular butyl rubber that is convenient for molding vulcanization film;

[0124] S3, natural rubber layer 1 ingredient mixing: take the natural rubber in the natural rub...

Embodiment 2-6

[0131] Examples 2-6: natural rubber, butyl rubber, and film-coated gaskets. The difference from Example 1 is that the components and their corresponding parts by weight are shown in Table 1.

[0132] Table 1 Components in natural rubber layer 1 and butyl rubber layer 2 and their corresponding parts by weight in Examples 1-6

[0133]

Embodiment 7

[0134] Embodiment 7: Natural rubber, butyl rubber, and film-coated gaskets. The difference from Embodiment 1 is that all accelerators are accelerators TRA.

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Abstract

The invention discloses a natural rubber, butyl rubber, membrane material covering gasket and a production process thereof. The natural rubber, butyl rubber and membrane material covering gasket sequentially comprise a natural rubber layer, a butyl rubber layer, a covering Film layer, natural rubber layer includes natural rubber, accelerator, sulfur, stearic acid, zinc oxide, ground calcium carbonate, first toner, anti-aging agent 264; butyl rubber layer includes bromobutyl rubber, calcium carbonate , the second toner, zinc oxide, sulfur, vaseline, low molecular weight polyethylene; in the natural rubber layer, the accelerator includes at least one of accelerator TRA, accelerator TMTD; the first toner includes titanium dioxide, oxidation At least one of iron red; the second toner includes at least one of titanium dioxide and iron oxide red; the coating layer includes one of FEP layer, PTFE layer and ETFE layer.

Description

technical field [0001] The invention relates to the technical field of gasket production, more specifically, it relates to a natural rubber, butyl rubber, film-laminated gasket and a production process thereof. Background technique [0002] Rubber gaskets have the properties of oil resistance, acid and alkali resistance, cold and heat resistance, aging resistance, etc., and can be directly cut into sealing gaskets of various shapes, which are widely used in medicine, electronics, chemical industry, antistatic, flame retardant, food and other industries. [0003] The Chinese patent with application publication number CN104725732A and application publication date of June 24, 2015 discloses a low-hardness medical thermoplastic bromobutyl rubber. The basic composition and mass parts are: 100 parts of bromobutyl rubber, poly 20-50 parts of propylene, 1-5 parts of vulcanizing agent, 60-100 parts of mineral oil. [0004] In the prior art, rubber stoppers, combined caps, gaskets fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B25/04B32B25/08B32B25/12B32B25/18B32B27/32B32B27/30B32B7/10B32B37/00C08L7/00C08L23/28C08L23/06C08L91/06C08K13/02C08K3/06C08K5/09C08K3/22C08K3/26
CPCB32B7/10B32B25/042B32B25/08B32B25/12B32B25/18B32B27/304B32B27/322B32B37/00B32B2250/24B32B2307/51B32B2307/714C08K3/06C08K3/22C08K3/26C08K5/09C08K13/02C08K2003/2241C08K2003/2272C08K2003/2296C08K2003/265C08L23/283C08L2205/02C08L2205/03C08L7/00C08L91/06C08L23/06
Inventor 朱剑锋
Owner 浙江欧尔赛斯科技有限公司