Easily-processed and reinforced styrene butadiene rubber and preparation method thereof

A styrene-butadiene rubber and easy-to-process technology, applied in the field of styrene-butadiene rubber and its preparation, can solve the problems of no reinforcement effect, easy precipitation and the like

Active Publication Date: 2018-03-27
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The softeners reported in the patent are actually physical plasticizers, mainly including aromatic oil, paraffin oil, naphthenic oil, heavy oil, paraffin, vaseline, asphalt, petroleum resin, etc. This kind of softener can only soften rubber by filling effect, no reinforcing effect, and prone to precipitation during product use

Method used

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  • Easily-processed and reinforced styrene butadiene rubber and preparation method thereof
  • Easily-processed and reinforced styrene butadiene rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Mix the anti-scorch agent 2-vinylbenzoic acid and the reinforcing agent vinyltriethoxysilane at a molar ratio of 1.0:5.0, prepare a solution with a 30% mass concentration with hexane solvent, and add the anti-scorch agent to the solution and 0.1% olefin metathesis catalyst on the total substance amount of reinforcing agent Air and water were isolated, and after reacting at room temperature for 8 hours, the solvent was removed by a vacuum desolventizer to obtain anti-scorch rubber reinforcing agent 1-1.

[0041] Dissolve 100 parts of styrene-butadiene rubber SBR1500 in hexane solvent to prepare a 1.1% concentration solution, add 0.15 parts of olefin metathesis catalyst And 1.3 parts of anti-scorch rubber reinforcing agent 1-1, at 15.5 ℃ isolated from air and water, reacted for 0.51 hours, the glue solution after the reaction was detached by solvent to obtain a reinforcing softener, and its Mn was measured to be 90000.

[0042] Mix 100 parts of styrene-butadiene rubber...

Embodiment 2

[0047] Mix anti-scorch agent 3-vinylphthalic acid and reinforcing agent vinyldiethoxymethylsilane at a molar ratio of 1.0:0.1, prepare a solution with 1% mass concentration with hexane solvent, add to the solution Olefin metathesis catalysts accounting for 0.01% of the total amount of anti-scorch agents and reinforcing agents After isolating air and water and reacting at room temperature for 0.5 h, the solvent was removed by a vacuum desolventizer to obtain anti-scorch rubber reinforcing agent 2-1.

[0048] Dissolve 100 parts of styrene-butadiene rubber SBR1500 in toluene solvent to prepare a 10% concentration solution, add 0.9 parts of olefin metathesis catalyst And 48 parts of anti-scorch rubber reinforcing agent 2-1, separated from air and water at 49°C, and reacted for 4.6 hours. The reacted glue solution was removed by solvent to obtain a reinforcing softener product, and its Mn was measured to be 3000.

[0049] 100 parts of styrene-butadiene rubber SBR1500 and 14 part...

Embodiment 3

[0055] Mix the anti-scorch agent 3-vinylphthalic acid and the reinforcing agent vinyltrimethoxysilane at a molar ratio of 1.0:4.0, prepare a 10% mass concentration solution with hexane solvent, add anti-scorch 0.09% of the total substance amount of agent and reinforcing agent for olefin metathesis catalyst Isolate air and water, react at room temperature for 4.5 hours, and use a vacuum desolventizer to remove the solvent to obtain anti-scorch rubber reinforcing agent 3-1.

[0056] Dissolve 100 parts of styrene-butadiene rubber SBR1712 base rubber in cyclohexane solvent to prepare a 25% concentration solution, add 0.4 parts of olefin metathesis catalyst And 25 parts of anti-scorch rubber reinforcing agent 3-1, at 25 ℃ isolated from air and water, react for 2.5 hours, the reacted glue solution is detached by solvent to obtain a reinforcing softener product, and its Mn is measured to be 60000.

[0057] Mix 100 parts of styrene-butadiene rubber SBR1712 and 30 parts of the prepa...

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Abstract

The invention provides an easily-processed and reinforced styrene butadiene rubber and a preparation method thereof. According to the present invention, the easily-processed and reinforced styrene butadiene rubber contains a base rubber and a reinforced softening agent, and is prepared through a mixing technology, wherein an olefin double-decomposition catalyst and a coke-proof rubber reinforcingagent are added to a styrene butadiene rubber and a reaction is performed to obtain the reinforced softening agent; and compared to the base rubber, the easily-processed and reinforced styrene butadiene rubber product of the present invention has the following characteristics (calculated as the softening agent adding amount) that the Mooney viscosity is reduced by 0.2-2.0 unit / part, the tensile strength is increased by more than 0.1 MPa / part, and the scorching time is delayed by 1-15 s / part.

Description

technical field [0001] The invention relates to a styrene-butadiene rubber and a preparation method thereof, in particular to a reinforced and easy-to-process styrene-butadiene rubber and a preparation method thereof. Background technique [0002] Emulsion polymerization styrene butadiene rubber raw rubber Mooney viscosity is generally 40-130ML 1+4 100℃ , the mixed rubber Mooney generally requires less than 90ML 1+4 100℃ ; The strength of raw rubber is low, generally only 5.5±0.5MPa, and its strength is mainly improved by the reinforcing agent in the post-processing process, generally up to 21.5-24.5MPa. Reinforcing agents mainly include inorganic powders such as carbon black, white carbon black, nano-calcium carbonate, and montmorillonite. The self-agglomeration of inorganic powders is relatively serious, and high energy is required to realize the mixing with rubber. Repeated kneading and mixing for a long time on a machine or internal mixer. In the refining or banbury...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L15/00C08C19/08
CPCC08C19/08C08C2019/09C08L9/06C08L15/00
Inventor 艾纯金邵卫燕鹏华付含琦朱晶孟令坤王卫东龚光碧赵旭涛梁滔李树毅陈建刚李晶郑聚成李猛刘鹏
Owner PETROCHINA CO LTD
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