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Non-migratory poss grafted antioxidant and preparation method thereof

A non-migration, anti-aging agent technology, applied in the field of rubber anti-aging agents, can solve the problems of unfavorable anti-aging agents uniform dispersion, reduction of anti-aging agent protection efficiency, and affecting the uniform dispersion of anti-aging agents, so as to increase compatibility and anti-atomic oxygen performance, Excellent resistance to thermo-oxidative aging and the effect of prolonging the oxidation induction time

Active Publication Date: 2020-05-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These three methods have their own shortcomings and problems: simply increasing the molecular weight of the anti-aging agent will reduce the proportion of effective anti-aging groups and is not conducive to the uniform dispersion of the anti-aging agent, resulting in a decrease in the protective efficiency of the anti-aging agent; grafting the anti-aging agent on the polymer The molecular chain of the matrix will not only affect the uniform dispersion of the anti-aging agent, but also affect the network structure of the rubber, so the anti-aging efficiency is not high, and it will also affect the performance of the rubber; grafting the anti-aging agent on the surface of the filler, this method is to a certain extent Can affect rubber-filler interaction

Method used

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  • Non-migratory poss grafted antioxidant and preparation method thereof
  • Non-migratory poss grafted antioxidant and preparation method thereof
  • Non-migratory poss grafted antioxidant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 9 mass parts of heptaphenyl epoxy POSS and 5 mass parts of RT base are dissolved in 100 mass parts of anhydrous toluene to form a reaction system, nitrogen is used to remove the air in the system, and heating is started under nitrogen protection. After the system started to reflux, add 0.01 parts by mass of platinum catalyst through a micro-syringe, and heat to 120°C and stir the reaction for at least 36 hours. After the reaction, the solvent was removed to obtain a solid product, and the obtained solid product was subjected to Soxhlet extraction with methanol as a solvent to remove no The RT base that participates in the grafting reaction, the solid product obtained after the extraction is vacuum-dried to obtain the non-migrating POSS grafted anti-aging agent (RTPO). The structural formula of heptaphenyl epoxy POSS is:

[0032]

[0033] Infrared characterization of RTPO, the results are shown in figure 1 , at 2957cm -1 and 2934cm -1 The absorption peak appearing ...

Embodiment 2

[0036]The heptamethyl epoxy POSS of 14 mass parts and the RT base of 10 mass parts are jointly dissolved in the anhydrous toluene of 100 mass parts to form reaction system, adopt nitrogen to get rid of the air in the system, then start heating under nitrogen protection, After the system starts to reflux, add 0.03 parts by mass of nickel catalyst through a micro-syringe, and heat to 100°C and stir for 36 hours. After the reaction, the solvent anhydrous toluene is removed to obtain a solid product, and the obtained solid product is subjected to Soxhlet extraction with methanol as a solvent. , remove the RT base that does not participate in the grafting reaction, and vacuum-dry the solid product obtained after the extraction to obtain a non-migratory POSS grafted anti-aging agent (RTPO).

[0037] The structural formula of heptamethyl epoxy POSS is:

[0038]

Embodiment 3

[0040] Dissolve 20 parts by mass of heptabutyl epoxy POSS and 15 parts by mass of RT base in 100 parts by mass of anhydrous toluene to form a reaction system, use nitrogen to remove the air in the system, start heating under nitrogen protection, and wait for the system to start After reflux, add 0.03 parts by mass of nickel catalyst through a micro syringe, heat to 100°C and stir to react for at least 36 hours. After the reaction, the solvent is removed to obtain a solid product, and the obtained solid product is subjected to Soxhlet extraction with methanol as a solvent to remove the components that did not participate in the reaction. The RT base of the branch reaction, the solid product obtained after the extraction is vacuum-dried to obtain the non-migratory POSS grafted anti-aging agent (RTPO). The structural formula of heptabutyl epoxy POSS is:

[0041]

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PUM

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Abstract

The invention provides a non-migrating POSS (polyhedral oligomeric silsesquioxane) grated anti-ageing agent and a preparation method thereof; active amino groups in an amine anti-ageing agent are allowed to react with active groups in single-active functional group POSS, the amine anti-ageing agent is chemically grafted to POSS molecules, and the POSS grafted anti-ageing agent is obtained. The novel anti-ageing agent of higher anti-oxidant property and higher anti-migrating property is provided for the ageing protection for rubber and other rubber elastomers, and anti-ageing efficiency is improved without affecting structural properties of rubber and other rubber elastomers.

Description

technical field [0001] The invention belongs to the field of rubber antiaging agents, in particular to a novel non-migrating POSS grafted antiaging agent and a preparation method thereof. [0002] technical background [0003] Rubber products and elastomers with rubber as the main body are widely used in various fields of the national economy due to their excellent high elasticity, high flexibility and excellent processing performance. However, due to the high degree of unsaturation of rubber, rubber products are prone to aging during processing and use. Aging will degrade the performance of rubber materials, and eventually completely lose their performance and even cause accidents. At present, the simplest and most effective anti-aging method is to add anti-aging agents during rubber processing. The most used anti-aging agent is the small molecule anti-aging agent, and the traditional small-molecule anti-aging agent has problems such as volatilization and easy migration du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/08C08G77/388C08L7/00C08L9/06
Inventor 魏海涛黄光速郑静郭莉莉周军军
Owner SICHUAN UNIV
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