Light-colored solvent-resistant natural rubber vulcanized rubber and preparation method thereof

A natural rubber and solvent-resistant technology, applied in the field of organic solvent-resistant rubber, can solve the problem that the overall performance is inferior to natural rubber, etc., and achieve the effect of improving the organic solvent-resistant performance and reducing the penetration space.

Active Publication Date: 2018-11-27
镇江市江冠电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although nitrile rubber has good oil resistance, its overall performance is not as good as that of natural rubber, especially processing performance, cold resistance and dynamic mechanical properties

Method used

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  • Light-colored solvent-resistant natural rubber vulcanized rubber and preparation method thereof
  • Light-colored solvent-resistant natural rubber vulcanized rubber and preparation method thereof

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preparation example Construction

[0014] A preparation method of light-colored solvent-resistant natural rubber vulcanizate, comprising the following steps:

[0015] Step 1: Dissolve 4-6g of 1,6-bistrimethoxysilylhexane in 500mL ethanol solution, add 50g of montmorillonite, stir and reflux in a water bath at 70-90°C for 2-4h, add 25g of silicon dioxide, 60 Reflux in a water bath at -80°C for 2-4h, add 1-2g of γ-(methacryloyloxy)propyltrimethoxysilane dropwise, reflux in a water bath at 50-70°C for 4-6h, cool, filter, and wash with absolute ethanol 3 times, Vacuum drying at 60°C and grinding to obtain a functional hybrid filler, wherein the average aspect ratio of montmorillonite is 30-100, the average particle size is 1-20 μm, and the average particle size of silica is 100-300nm;

[0016] Step 2: Roll 100 parts by mass of natural rubber on an open mill, add 2 parts by mass of stearic acid, 5 parts by mass of zinc oxide, 1.5 parts by mass of anti-aging agent 264, and 75-100 parts by mass of the functional compl...

Embodiment 1

[0031] Step 1: Dissolve 4g of 1,6-bistrimethoxysilylhexane in 500mL ethanol solution, add 50g of montmorillonite, stir and reflux in a water bath at 90°C for 2h, add 25g of silicon dioxide, reflux in a water bath at 60°C for 4h, drop Add 2g of γ-(methacryloyloxy)propyltrimethoxysilane, reflux in a water bath at 50°C for 6 hours, cool, filter, wash with absolute ethanol three times, dry in vacuum at 60°C, and grind to obtain a functional hybrid filler. The average length-to-diameter ratio of desoiled soil is 30, the average particle size is 20 μm, and the average particle size of silica is 100 nm. The structure diagram of the functional hybrid filler is shown in figure 1 ;

[0032] Step 2: Roll 100 parts by mass of natural rubber on an open mill, and add 2 parts by mass of stearic acid, 5 parts by mass of zinc oxide, 1.5 parts by mass of anti-aging agent 264, and 75 parts by mass of the functional hybrid filler obtained in step 1 , 50 parts by mass of naphthenic oil, 1.5 parts...

Embodiment 2

[0035] Step 1: Dissolve 6g of 1,6-bistrimethoxysilylhexane in 500mL ethanol solution, add 50g of montmorillonite, stir and reflux in a water bath at 70°C for 4h, add 25g of silicon dioxide, reflux in a water bath at 80°C for 2h, drop Add 1g of γ-(methacryloyloxy)propyltrimethoxysilane, reflux in a water bath at 70°C for 4 hours, cool, filter, wash with absolute ethanol three times, dry in vacuum at 60°C, and grind to obtain a functional hybrid filler. The average aspect ratio of desoiling is 100, the average particle size is 1μm, and the average particle size of silica is 300nm;

[0036] Step 2: Roll 100 parts by mass of natural rubber on an open mill, and add 2 parts by mass of stearic acid, 5 parts by mass of zinc oxide, 1.5 parts by mass of anti-aging agent 264, and 100 parts by mass of the functional hybrid filler obtained in step 1 , 60 parts by mass of naphthenic oil, 0.5 parts by mass of accelerator M, 1.2 parts by mass of sulfur, to obtain rubber compound;

[0037] St...

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Abstract

The invention relates to light-colored solvent-resistant natural rubber vulcanized rubber and a preparation method thereof. The preparation method is characterized by utilizing a modification processof double filler agent compounding and stepwise filler addition so as to prepare montmorillonoid / silicon dioxide functional hybrid filler, and further carrying out processes of film orientation, prevulcanization, stress stretching and vulcanization formation, so as to obtain the light-colored solvent-resistant natural rubber vulcanized rubber, wherein the rubber has a good filler-rubber mutual effect and a small cross-linked network molecular gap and comprises an effective organic solvent blocking layer.

Description

technical field [0001] The invention relates to the field of organic solvent-resistant rubber, in particular to a light-colored solvent-resistant natural rubber vulcanizate with good organic solvent resistance and low hardness and a preparation method thereof. Background technique [0002] Natural rubber is one of the important foundations of the national economy and is used in various fields of industrial production. During the operation of industrial equipment, it is often necessary to add organic solvents such as lubricating oil and engine oil. When such solvents come into contact with natural rubber, they will cause natural rubber to swell, resulting in changes in the size of natural rubber products and reducing the performance of rubber products, resulting in Rubber products lose their use value. Currently, nitrile rubber is often used in the field of solvent resistance. Although nitrile rubber has good oil resistance, its overall performance is not as good as that of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L91/00C08K13/06C08K9/06C08K3/36C08K3/34C08K5/09C08K3/22
CPCC08K2003/2296C08K2201/003C08K2201/016C08L7/00C08L2312/00C08L91/00C08K13/06C08K9/06C08K3/36C08K3/346C08K5/09C08K3/22
Inventor 王经逸卿俊臣陆涛郭飞宇侍惠东沈云海杭祖圣
Owner 镇江市江冠电器有限公司
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