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Blending system and mixing process of isoprene rubber and brominated butyl rubber

A technology of brominated butyl rubber and isoprene rubber, which is applied in the field of rubber, can solve the problems of self-sealing performance and degradation of rubber shavings produced by rubber stoppers, and achieve stable mixing curves, good rubber dispersion, and The effect of excellent vulcanization performance

Pending Publication Date: 2022-03-25
HUBEI HUAQIANG HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a blending system and mixing process of isoprene rubber and bromobutyl rubber, which can solve the problems of rubber shavings and self-sealing performance degradation after repeated punctures of rubber stoppers

Method used

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  • Blending system and mixing process of isoprene rubber and brominated butyl rubber
  • Blending system and mixing process of isoprene rubber and brominated butyl rubber
  • Blending system and mixing process of isoprene rubber and brominated butyl rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Masterbatch: bromobutyl rubber 2.5kg, titanium dioxide 1kg, reinforcing agent carbon black 0.02kg, vulcanizing agent phenolic resin 2.5kg;

[0027] Mixed rubber: bromobutyl rubber 17.5kg, isoprene rubber 30kg, clay 37.5kg, softener modified polyethylene 0.5kg and stearic acid 0.75kg, accelerator zinc oxide 2.5kg, antioxidant 1076 0.5 kg.

[0028] A mixing process of a blend system of isoprene rubber and bromobutyl rubber, the concrete process steps are as follows:

[0029] (1) Firstly, the bromobutyl rubber in the masterbatch is pressed and kneaded with titanium dioxide, reinforcing agent and vulcanizing agent until the rubber is discharged at 90°C to produce the masterbatch;

[0030] (2) In the process of mixing raw rubber and masticating, first add brominated butyl rubber and then put it into pottery clay, and carry out 2 minutes of pressing and banburying;

[0031] (3) drop into isoprene rubber, softener, promotor, antioxidant in step (2) again and carry out 2min c...

Embodiment 2

[0036] Masterbatch: bromobutyl rubber 1.875kg, titanium dioxide 0.5kg, reinforcing agent carbon black 0.01kg, vulcanizing agent phenolic resin 2kg;

[0037] Mixed rubber: bromobutyl rubber 13.125kg, isoprene rubber 25kg, clay 32.5kg, softener modified polyethylene 0.4kg and stearic acid 0.6kg, accelerator zinc oxide 2kg, antioxidant 1076 0.4kg .

[0038] A mixing process of a blend system of isoprene rubber and bromobutyl rubber, the concrete process steps are as follows:

[0039] (1) Firstly, the bromobutyl rubber in the masterbatch is pressed and kneaded with titanium dioxide, reinforcing agent and vulcanizing agent until the rubber is discharged at 90°C to produce the masterbatch;

[0040] (2) In the process of mixing raw rubber and masticating, first add brominated butyl rubber and then put it into pottery clay, and carry out 2 minutes of pressing and banburying;

[0041] (3) drop into isoprene rubber, softener, promotor, antioxidant in step (2) again and carry out 2min ...

Embodiment 3

[0046] Masterbatch: bromobutyl rubber 3.125kg, titanium dioxide 1.5kg, reinforcing agent carbon black 0.03kg, vulcanizing agent phenolic resin 3kg;

[0047] Mixed rubber: bromobutyl rubber 21.875kg, isoprene rubber 35kg, clay 42.5kg, softener modified polyethylene 0.6kg and stearic acid 0.9kg, accelerator zinc oxide 3kg, antioxidant 1076 0.6kg .

[0048]A mixing process of a blend system of isoprene rubber and bromobutyl rubber, the concrete process steps are as follows:

[0049] (1) Firstly, the bromobutyl rubber in the masterbatch is pressed and kneaded with titanium dioxide, reinforcing agent and vulcanizing agent until the rubber is discharged at 90°C to produce the masterbatch;

[0050] (2) In the process of mixing raw rubber and masticating, first add brominated butyl rubber and then put it into pottery clay, and carry out 2 minutes of pressing and banburying;

[0051] (3) drop into isoprene rubber, softener, promotor, antioxidant in step (2) again and carry out 2min c...

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Abstract

The invention provides a blending system of isoprene rubber and brominated butyl rubber and a mixing process. The blending system is prepared from the following raw materials: isoprene rubber, brominated butyl rubber, pottery clay, titanium dioxide, a reinforcing agent, a softening agent, an accelerant, a vulcanizing agent and an antioxidant. During mixing, part of brominated butyl rubber, titanium dioxide, a reinforcing agent and a vulcanizing agent are subjected to pressing, banburying and rubber discharging, and masterbatch is obtained; adding part of argil into the rest brominated butyl rubber, and pressing and banburying; then adding the isoprene rubber, the softening agent, the accelerant and the antioxidant, pressing and banburying; adding the rest of the pottery clay, and carrying out press-fit banburying for 3 minutes to obtain a rubber compound; and finally, adding the master batch into the rubber compound, pressing and banburying, and discharging the rubber material, thereby obtaining the product. According to the invention, the problem of unqualified rubber compound performance caused by different solubility of isoprene rubber and brominated butyl rubber to a vulcanizing agent and part of small materials can be solved, the quality of the rubber compound and the product stability are improved, and the appearance performance of a vulcanized product is improved.

Description

technical field [0001] The invention belongs to the technical field of rubber and relates to a blended rubber system, in particular to a blended system and a mixing process of isoprene rubber and brominated butyl rubber. Background technique [0002] At present, most of the medical rubber stoppers use butyl rubber as the main modified rubber. This type of rubber has the advantages of good compatibility with drugs, excellent processing performance, and good sealing performance. However, this type of rubber is easy to break after repeated punctures A large amount of puncture rubber debris and a significant decrease in self-sealing properties are generated. Therefore, in some drugs that require multiple punctures, the characteristics exhibited by a single component of butyl rubber are not enough to meet the needs of the drug. Contents of the invention [0003] The invention provides a blending system and a mixing process of isoprene rubber and bromobutyl rubber, which can sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/00C08L23/28C08L61/06C08K3/34C08K3/22C08K3/04C08K5/09
CPCC08L9/00C08K2003/2241C08K2003/2296C08L23/283C08L61/06C08K3/346C08K3/22C08K3/04C08K5/09
Inventor 刘睿杨静袁牧歌戴本文谭娟彭锐
Owner HUBEI HUAQIANG HIGH TECH CO LTD
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