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Rubber composition containing hydrogenated vegetable oil, and preparation method thereof

A hydrogenated vegetable oil and rubber composition technology, which is applied in the field of polymer materials, can solve problems affecting the mechanical properties of rubber, soybean oil self-polymerization, and mechanical properties, and achieve the effect of ensuring performance

Active Publication Date: 2019-08-06
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a problem that cannot be ignored is that the double bonds in soybean oil will affect the crosslinking of rubber, resulting in a decrease in crosslinking density and affecting the mechanical properties of rubber. We have also reported this work (Ind.Eng.Chem.Res ., 2016, 55(10), 2784; J.Appl.Polym.Sci., 2014, 131(16), 40643; J.Appl.Polym.Sci., 2013, 130(6), 4457–4463)
The effect of soybean oil on rubber crosslink density can be compensated by increasing the amount of crosslinking agent, but at the same time, it will also lead to self-polymerization of soybean oil in rubber, thus affecting the mechanical properties
More importantly, increasing the amount of cross-linking agent known to those skilled in the art is unfavorable for the vulcanization of rubber

Method used

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  • Rubber composition containing hydrogenated vegetable oil, and preparation method thereof
  • Rubber composition containing hydrogenated vegetable oil, and preparation method thereof
  • Rubber composition containing hydrogenated vegetable oil, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: natural rubber and hydrogenated rapeseed oil composition

[0036] Add 100 g of rapeseed oil and 0.4% (oil weight) Ni catalyst into the reactor for pre-stirring, and react at 220°C and 400 r / min for 1.5 hours to obtain hydrogenated rapeseed oil with an iodine value of 30.

[0037] Add 100 parts of natural rubber (TSR20), 5 parts of hydrogenated rapeseed oil (iodine value 30), and 40 parts of white carbon black into the Haake internal mixer, mix at 80°C for 5 minutes, add 10 parts of coupling agent Si69, Then heat up to 100°C for 5 minutes, cool down to 80°C, then add 3 parts of zinc oxide, 3 parts of 4020 anti-aging agent, 2 parts of CZ accelerator, and 2 parts of sulfur into the internal mixer, mix for 5 minutes and take it out. The rubber mixture was vulcanized at 150°C for 20 minutes to obtain vulcanized natural rubber.

Embodiment 2

[0038] Embodiment 2: styrene-butadiene rubber and hydrogenated soybean oil composition

[0039] The Ni catalyst of 100g soybean oil and 3% (oil weight) is added into reactor and is pre-stirred, and reactant is uniformly mixed, reacts 8 hours under 180 ℃, 0.2MPa hydrogen pressure, 300r / min condition, obtains the iodine value 100 Hydrogenated soybean oil.

[0040] Add 100 parts of styrene-butadiene rubber (RC2564S), 20 parts of hydrogenated soybean oil (iodine value 100), and 80 parts of white carbon black into the Hack mixer, mix at 80°C for 5 minutes, add 18 parts of coupling agent Si69, Then heat up to 150°C for 2 minutes, cool down to 80°C, then add 14 parts of zinc oxide, 5 parts of 4020 anti-aging agent, 5 parts of CZ accelerator, and 9 parts of sulfur into the internal mixer, mix for 5 minutes and take it out. The rubber mixture was vulcanized at 150° C. for 15 minutes to obtain vulcanized styrene-butadiene rubber.

Embodiment 3

[0041] Embodiment 3: styrene-butadiene rubber, butadiene rubber and hydrogenated palm oil composition

[0042] 250g refined palm oil and 0.12% (oil weight) Pd-B / γ-Al 2 o 3 Put the catalyst in a reactor, and react at 100° C., 500 kPa hydrogen pressure, and 500 rpm for 1 hour to obtain hydrogenated palm oil with an iodine value of 50.

[0043] Add 70 parts of styrene-butadiene rubber (RC2564S), 30 parts of butadiene rubber (BR9000), 30 parts of hydrogenated palm oil (iodine value 50), and 60 parts of carbon black (N330) into the Haake internal mixer, and mix at 80 ° C After 5 minutes, add 7 parts of zinc oxide, 8 parts of 4020 anti-aging agent, 2 parts of CZ accelerator, and 2 parts of sulfur into the internal mixer, and take it out after mixing for 5 minutes. The rubber mixture was vulcanized at 150°C for 25 minutes to obtain vulcanized styrene-butadiene / butadiene rubber.

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Abstract

The invention relates to a rubber composition containing hydrogenated vegetable oil. The rubber composition comprises 100 parts of raw rubber, 2-100 parts of hydrogenated vegetable oil, 30-100 parts of a reinforcing filler, 1-10 parts of a promoter and 1-10 parts of a crosslinker, wherein the structural unit of the hydrogenated vegetable oil contains one to four double bonds, and the iodine valueis 30-120. The hydrogenated vegetable oil used as a plasticizer has an excellent compatibility with non-polar rubber, so the Mooney viscosity of non-polar rubber compounded rubber is greatly reduced,the processing property of the rubber is improved, the hardness of the vulcanized rubber is reduced, and the elongation at break of vulcanized rubber is improved. The hydrogenated vegetable oil meetsthe requirements for environmental protection and renewability, is nontoxic and non-migrating, is harmless to human health or produces no VOC emissions, and is expected to replace petroleum-based plasticizers for rubber as a next generation green plasticizer for rubber.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a rubber composition containing hydrogenated vegetable oil and a preparation method thereof. Background technique [0002] Plasticizers can reduce the force between rubber molecules, reduce the glass transition temperature of rubber, improve the plasticity and fluidity of rubber, make it convenient for calendering, extrusion and other molding operations, and at the same time reduce hardness and modulus stress, It is one of the indispensable additives for rubber to endow the rubber compound with higher elasticity and lower heat generation, improve the physical and mechanical properties of the rubber compound such as cold resistance. The ideal plasticizer requires good plasticizing effect, non-toxicity, less dosage, good compatibility with rubber, low volatility, and not easy to migrate. At present, the plasticizers used in rubber are generally small-molecule petroleum-based plast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/06C08L23/16C08L23/22C08L9/00C08L91/00C08K13/02C08K3/36C08K3/22C08K3/06C08K3/04
CPCC08L7/00C08L9/06C08L23/16C08L23/22C08L9/00C08K2003/2296C08L2205/025C08L2205/03C08L91/00C08K13/02C08K3/36C08K3/22C08K3/06C08K3/04C08K5/14
Inventor 王朝张立群叶能韩悦岳冬梅韩冬礼
Owner BEIJING UNIV OF CHEM TECH
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