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A kind of preparation method of polyhydroxysilane modified butadiene rubber and anti-ozone aging rubber

A technology of aging rubber and butadiene, which is applied in the field of modified rubber to achieve the effect of improving binding ability, improving affinity, and enhancing filling ability

Active Publication Date: 2022-03-22
诚展(清远)鞋业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even if the coupling agent can improve the adsorption and bonding of silica to macromolecular rubber, the improvement in ozone aging still needs further improvement.

Method used

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  • A kind of preparation method of polyhydroxysilane modified butadiene rubber and anti-ozone aging rubber
  • A kind of preparation method of polyhydroxysilane modified butadiene rubber and anti-ozone aging rubber
  • A kind of preparation method of polyhydroxysilane modified butadiene rubber and anti-ozone aging rubber

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Experimental program
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Effect test

Embodiment 1

[0051] A kind of preparation method of polyhydroxysilane modified butadiene rubber, comprises the steps:

[0052] Step 1: butadiene rubber is dissolved in toluene, and the content of butadiene rubber in toluene is 20wt%;

[0053] Step 2: Add vinyl hydroxy silicone oil to step 1, and add an oil-soluble initiator to initiate the reaction; vinyl hydroxy silicone oil can be added at one time or mixed with a small amount of toluene and added in batches, which has no obvious effect on grafting efficiency ; The reaction temperature is determined according to the initiation temperature of the initiator, and the present embodiment adopts azobisisoheptanonitrile. The initiator is dissolved and added dropwise in a solvent, and its dosage is about 0.01 times that of vinyl hydroxy silicone oil. The dropping time is controlled at about 2 hours, and the reaction time is controlled at 6 hours;

[0054] Step 3: adding methanol to the mixture in step 2 to precipitate the macromolecular produc...

Embodiment 2

[0058] A kind of preparation method of polyhydroxysilane modified butadiene rubber, comprises the steps:

[0059] Step 1: butadiene rubber is dissolved in toluene, and the content of butadiene rubber in toluene is 15wt%;

[0060] Step 2: adding vinyl hydroxy silicone oil to step 1, and adding an oil-soluble initiator to initiate the reaction;

[0061] Step 3: adding methanol to the mixture in step 2 to precipitate the macromolecular product from the organic solvent, and drying the product to remove the organic solvent;

[0062] The weight ratio of described vinyl hydroxy silicone oil and butadiene rubber is 0.3:1;

[0063] The hydroxyl content of the vinyl hydroxy silicone oil is 6±0.5%; the vinyl content of the vinyl hydroxy silicone oil is 6±0.5%, and the viscosity at 25°C is ≤33mm 2 / s. The butadiene rubber is Sinopec BR900 butadiene rubber.

Embodiment 3

[0065]A kind of preparation method of polyhydroxysilane modified butadiene rubber, comprises the steps:

[0066] Step 1: butadiene rubber is dissolved in toluene, and the content of butadiene rubber in toluene is 18wt%;

[0067] Step 2: adding vinyl hydroxy silicone oil to step 1, and adding an oil-soluble initiator to initiate the reaction;

[0068] Step 3: adding methanol to the mixture in step 2 to precipitate the macromolecular product from the organic solvent, and drying the product to remove the organic solvent;

[0069] The weight ratio of described vinyl hydroxy silicone oil and butadiene rubber is 1:1;

[0070] The hydroxyl content of the vinyl hydroxy silicone oil is 6±0.5%; the vinyl content of the vinyl hydroxy silicone oil is 6±0.5%, and the viscosity at 25°C is ≤33mm 2 / s. The butadiene rubber is Sinopec BR900 butadiene rubber.

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Abstract

The invention belongs to the field of modified rubber, and specifically relates to a preparation method of polyhydroxysilane modified butadiene rubber, comprising the following steps: step 1: dissolving butadiene rubber in an organic solvent; step 2: dissolving vinyl hydroxyl Silicone oil is added to step 1, and an oil-soluble initiator is added to initiate the reaction; step 3: a precipitating agent is added to the mixture in step 2 to precipitate the macromolecular product from the organic solvent, and the product is dried to remove the organic solvent; The weight ratio of the vinyl hydroxy silicone oil and butadiene rubber is 0.3-1:1; the hydroxyl content of the vinyl hydroxy silicone oil is 6 ± 0.5%; the vinyl content of the vinyl hydroxy silicone oil is 6 ± 0.5% . The invention also discloses an anti-ozone aging rubber. By grafting polyhydroxysilane to the side chain of butadiene rubber, the adsorption and bonding effect of silica and macromolecular silane is improved, and it has a more obvious effect on anti-ozone aging.

Description

technical field [0001] The invention relates to the field of modified rubber, in particular to a preparation method of polyhydroxysilane modified butadiene rubber and an anti-ozone aging rubber. Background technique [0002] CN201710984546.9 discloses a low-elastic anti-slip rubber, comprising the following components in parts by weight: 100 parts by weight of main rubber; 2-4 parts by weight of coupling agent; 5-10 parts by weight of softening oil; 50-65 parts by weight of white carbon black 3-5 parts by weight of zinc oxide; 1-2 parts by weight of stearic acid; 0.5-1 parts by weight of microcrystalline wax; 5-10 parts by weight of uniform resin; and an appropriate amount of anti-aging agent, active agent, accelerator and sulfur; The main rubber consists of 10-15 parts by weight of natural rubber, 45-65 parts by weight of brominated butyl rubber, 5-15 parts by weight of styrene-butadiene rubber, and 15-25 parts by weight of butadiene rubber. The advantage is that it has th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/42C08L9/00C08L7/00C08L9/02C08L83/10C08K7/26
CPCC08G77/42C08L9/00C08L2201/08C08L7/00C08L9/02C08L83/10C08K7/26
Inventor 郑忠平谢昌裕伍建国蔡超炎黄剑锋
Owner 诚展(清远)鞋业有限公司