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Modified styrene-butadiene rubber hose with high gas barrier property and preparation method thereof

A gas barrier and styrene-butadiene rubber technology, applied in the field of rubber hoses, can solve the problems of poor air tightness and limitation of styrene-butadiene rubber air hoses, and achieve the effect of overcoming weak mechanical strength, good mechanical strength and improving gas barrier performance.

Inactive Publication Date: 2020-05-19
浙江久运汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The styrene-butadiene rubber used to prepare air hoses only improves the heat resistance of styrene-butadiene rubber, and still does not solve the problem of poor air tightness of styrene-butadiene rubber air hoses. In industries with high air-tightness requirements (such as Applications in aerospace, etc.) have been greatly limited

Method used

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  • Modified styrene-butadiene rubber hose with high gas barrier property and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] According to 50kg natural rubber (smoke sheet rubber No. 3), 60kg styrene-butadiene rubber, 7kg butadiene rubber, 7kg zinc oxide, 2kg stearic acid, 3kg anti-aging agent SP-C, 1kg anti-aging agent MB, 60kg modified sheet rector Stone, 40kg modified kaolin, 5kg silane coupling agent (KH-550), 1kg xylene resin, 1kg accelerator M, 1.5kg accelerator DM, 0.5kg accelerator D, 2.5kg sulfur The mass ratio weighs each After the raw materials, firstly mix the modified flaky rectorite and modified kaolin evenly to get the filling powder; then mix the natural rubber, styrene-butadiene rubber and butadiene rubber on the open mill for 5 minutes, wait until the temperature is uniform and wrap the rolls, Slowly add 1 / 3 weight filler powder, silane coupling agent, xylene resin, anti-aging agent (anti-aging agent SP-C and anti-aging agent MB), accelerator (accelerator M, accelerator DM and accelerator D) in sequence , 1 / 3 weight of filling powder, after eating the powder, add stearic acid...

Embodiment 2

[0028]According to 45kg natural rubber (No. 3 smoked sheet rubber), 55kg styrene-butadiene rubber, 5kg butadiene rubber, 6kg zinc oxide, 1.5kg stearic acid, 2kg anti-aging agent SP-C, 0.6kg anti-aging agent MB, 55kg modified sheet Rectorite, 35kg modified kaolin, 4kg silane coupling agent (KH-560), 0.8kg xylene resin, 0.8kg accelerator M, 1.2kg accelerator DM, 0.4kg accelerator D, 2.3kg sulfur After weighing each raw material, first mix the modified flaky rectorite and modified kaolin evenly to obtain the filling powder; then mix the natural rubber, styrene-butadiene rubber and butadiene rubber on the open mill for 3 to 5 minutes, and wait for the temperature After the roll is evenly covered, slowly add 1 / 3 weight of filler powder, silane coupling agent, xylene resin, anti-aging agent (anti-aging agent SP-C and anti-aging agent MB), accelerator (accelerator M, accelerator DM and accelerator D), 1 / 3 weight of filling powder, after eating the powder, add stearic acid, 1 / 3 weight...

Embodiment 3

[0034] According to 40kg natural rubber (No. 3 smoked sheet rubber), 50kg styrene-butadiene rubber, 3kg butadiene rubber, 3kg zinc oxide, 1kg stearic acid, 1kg anti-aging agent SP-C, 0.3kg anti-aging agent MB, 50kg modified sheet The mass ratio of supporting stone, 30kg modified kaolin, 3kg silane coupling agent (KH-570), 0.5kg xylene resin, 0.5kg accelerator M, 1kg accelerator DM, 0.3kg accelerator D, 2kg sulfur After each raw material, first mix the modified flaky rectorite and modified kaolin evenly to obtain the filling powder; then mix the natural rubber, styrene-butadiene rubber and butadiene rubber on the open mill for 3 minutes, wait for the temperature to be uniform and roll-wrapped , slowly add 1 / 3 weight of filler powder, silane coupling agent, xylene resin, anti-aging agent (anti-aging agent SP-C and anti-aging agent MB), accelerator (accelerator M, accelerator DM and accelerator D ), 1 / 3 weight of filler powder, after eating the powder, add stearic acid, 1 / 3 weigh...

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Abstract

The invention discloses a modified styrene-butadiene rubber hose with a high gas barrier property. The modified styrene-butadiene rubber hose is at least prepared from the following raw materials in parts by weight: 40-50 parts of natural rubber, 50-60 parts of butadiene-styrene rubber, 3-7 parts of butadiene rubber, 3-7 parts of zinc oxide, 1-2 parts of stearic acid, 1-3 parts of an anti-aging agent SP-C, 0.3-1 part of an anti-aging agent MB, 50-60 parts of modified flaky rectorite, 30-40 parts of modified kaolin, 3-5 parts of a silane coupling agent, 0.5-1 part of xylene resin, 0.5-1 part ofan accelerant M, 1-1.5 parts of an accelerant DM, 0.3-0.5 part of an accelerant D and 2-2.5 parts of sulfur. The butadiene-styrene rubber hose is good in mechanical strength and good in gas barrier property. The invention further discloses a preparation method of the modified styrene-butadiene rubber hose with the high gas barrier property. The modified styrene-butadiene rubber hose with the highgas barrier property can be prepared through mixing, extrusion molding and vulcanization; and the preparation method is simple in process steps, high in operability and suitable for industrial production.

Description

technical field [0001] The invention relates to a rubber hose, in particular to a modified styrene-butadiene rubber hose with high gas barrier performance and a preparation method thereof. Background technique [0002] Styrene-butadiene rubber (SBR) gas compound, industrial water resistance, ethylene glycol resistance, etc. Compared with natural rubber, styrene-butadiene rubber has uniform quality, less foreign matter, better wear resistance and aging resistance, good water resistance, and good elasticity with a hardness below 70. Therefore, styrene-butadiene rubber is usually made into air hoses and is widely used in agriculture, mining, industry, coal mining machinery, chemical industry, petroleum, shipbuilding, automobile manufacturing and other industries. However, when the existing styrene-butadiene rubber air hose is used, the gas in the tube will slowly leak through the polymer layer due to the effect of gas pressure, and the air tightness (gas barrier performance) i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L7/00C08L9/00C08K13/06C08K9/04C08K9/02C08K7/00C08K9/06C08K3/34C08K3/22C08K5/09
CPCC08K2003/2296C08L9/06C08L2201/14C08L2203/18C08L2205/02C08L2205/03C08L7/00C08L9/00C08K13/06C08K9/04C08K9/02C08K7/00C08K9/06C08K3/346C08K3/22C08K5/09
Inventor 闻浩泉金文俊李泽权彭春美王平王孪张利芳倪丽红
Owner 浙江久运汽车零部件有限公司
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