Rubber composition containing hydrogenated vegetable oil, and preparation method thereof

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...

Examples

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.

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...

Examples

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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