Antioxidant for rubber, and preparation method and application thereof

An anti-oxidant and rubber technology, applied in the field of rubber, can solve the problems of poor anti-oxidation performance, achieve the effect of enhancing anti-oxidation performance, color and Mooney viscosity, etc., and enhancing the anti-oxidation effect

Inactive Publication Date: 2020-01-07
佛山市丰正科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, antioxidant T501, antioxidant BHT264 or antioxidant SP are often added to rubber to slow down the oxidation of rubber, but the antioxidant performance of the above antioxidants is poor, so there is still room for improvement

Method used

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  • Antioxidant for rubber, and preparation method and application thereof
  • Antioxidant for rubber, and preparation method and application thereof
  • Antioxidant for rubber, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] An antioxidant for rubber, comprising the following components:

[0065] EPDM rubber 30kg; white carbon black 35kg; stearic acid 1kg; polyisobutylene 36kg; phosphite powder 1.25kg; dobutamine hydrochloride 0.75kg.

[0066] The preparation method of antioxidant for rubber is as follows:

[0067] S1, mixed raw materials, specifically as follows:

[0068] First add EPDM rubber into the granulator and crush it into particles with a particle size of 1 mm, then add 30 kg of EPDM rubber crushed into particles, 35 kg of white carbon black, 1 kg of stearic acid, and polyisobutylene into the internal mixer. 36kg, phosphite powder 1.25kg, dobutamine hydrochloride 0.75kg.

[0069] S2, internal refining, the details are as follows:

[0070] Stir and mix the raw materials in the internal mixer under pressure, and control the temperature of the internal mixer to 60°C, the mixing time is 10 minutes, and every 3 minutes during the stirring process, lift the weight of the mixed raw ma...

Embodiment 2

[0074] The difference with embodiment 1 is:

[0075] S2, internal refining, the details are as follows:

[0076] Stir and mix the raw materials in the internal mixer under pressure, and control the temperature of the internal mixer to 65°C, the mixing time is 8 minutes, and every 2 minutes during the stirring process, lift the weight of the mixed raw materials in the reaction vessel, and stir Invert the mixed stock in the reaction vessel.

Embodiment 3

[0078] The difference with embodiment 1 is:

[0079] S2, internal refining, the details are as follows:

[0080] Stir and mix the raw materials in the internal mixer under pressure, and control the temperature of the internal mixer to 61°C, the mixing time is 9 minutes, and every 3 minutes during the stirring process, lift the weight of the mixed raw materials in the reaction vessel, and stir Invert the mixed stock in the reaction vessel.

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Abstract

The invention discloses an antioxidant for rubber, and a preparation method and an application thereof. The antioxidant for rubber comprises, by mass, 30-35 parts of ethylene-propylene-diene monomer rubber, 30-35 parts of white carbon black, 1-4 parts of stearic acid, 33-36 parts of polyisobutene, 1-1.5 parts of a phosphite ester powder and 0.5-1 part of dobutamine hydrochloride. The preparation method comprises the following steps: S1, mixing of the raw materials; S2, internal mixing; and S3, discharging and pelletizing. The antioxidant is added to the rubber according to a mass ratio of theantioxidant to rubber of 0.1-0.15%, and can greatly improve the aging resistance of the rubber.

Description

technical field [0001] The invention relates to the field of rubber, more specifically, it relates to an antioxidant for rubber, a preparation method and application thereof. Background technique [0002] Rubber is a highly elastic polymer material with reversible deformation. It is elastic at room temperature, can produce large deformation under a small external force, and can return to its original shape after the external force is removed. The rubber industry is one of the important basic industries of the national economy. It not only provides daily and medical light industrial rubber products that are indispensable for people's daily life, but also provides heavy and emerging industries such as mining, transportation, construction, machinery, and electronics. Various rubber-made production equipment or rubber parts. Therefore, the rubber industry has a wide range of products and plays an extremely important role in people's daily life. [0003] However, because rubber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/22C08K13/02C08K3/36C08K5/09C08K5/524C08K5/092C08K5/00C08K3/22C08L9/00B29B9/06B29B9/12
CPCB29B9/06B29B9/12C08K3/22C08K3/36C08K5/005C08K5/09C08K5/092C08K5/524C08K13/02C08K2003/2296C08L9/00C08L23/16C08L23/22C08L2201/08
Inventor 邓应邦袁志明周至连
Owner 佛山市丰正科技有限公司
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