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High-temperature resistant rubber vulcanizing agent

A vulcanizing agent, high temperature resistant technology, applied in the field of vulcanizing compounding agent, to prevent scorch phenomenon, anti-aging performance without pollution, improve mechanical properties

Inactive Publication Date: 2017-09-29
滨海县星光化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, rubber has valuable use value only after being vulcanized. Therefore, a series of physical and mechanical properties of rubber can be greatly improved by a suitable vulcanization compounding agent in the rubber formula. There are still deficiencies in the mechanical properties, high temperature resistance, aging resistance and reduction of compression set, which need to be further improved to increase the service life of high temperature resistant rubber

Method used

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  • High-temperature resistant rubber vulcanizing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Use an open mill to masticate high-temperature-resistant raw rubber for 10 minutes to 15 minutes at room temperature using the thin pass method, adjust the roller distance to 0.4mm to 0.8mm, adjust the roller speed ratio to 1:1.25 to 1:1.27, and masticate After completion, adjust the roller distance to 1.5mm to 2.5mm, adjust the roller speed ratio to 1:1.10 to 1:1.20, and then carry out mixing. The mixing temperature is 55°C to 70°C, and the mixing time is 6min to 15min. During the refining process, add the high temperature resistant rubber vulcanizing agent prepared by 0.25g of anti-scorch agent component, 25g of vulcanizing agent component, 1g of accelerator component, 2g of active agent component, 0.5g of stearic acid, and other components. There are fillers. After the mixing is completed, put the high-temperature-resistant rubber into the vulcanization tank. The vulcanization temperature is set to 151°C, and the vulcanization time is set to 30 minutes. After the vulc...

Embodiment 2

[0023] Use an open mill to masticate high-temperature-resistant raw rubber for 10 minutes to 15 minutes at room temperature using the thin pass method, adjust the roller distance to 0.4mm to 0.8mm, adjust the roller speed ratio to 1:1.25 to 1:1.27, and masticate After completion, adjust the roller distance to 1.5mm to 2.5mm, adjust the roller speed ratio to 1:1.10 to 1:1.20, and then carry out mixing. The mixing temperature is 55°C to 70°C, and the mixing time is 6min to 15min. Add high-temperature-resistant rubber vulcanizing agent prepared by 1g of anti-scorch agent, 40g of vulcanizing agent, 2g of accelerator, 10g of active agent, 2g of stearic acid in the refining process, and the existing fillers of other components. Put the high-temperature rubber into the vulcanization tank, set the vulcanization temperature to 151°C, and set the vulcanization time to 30 minutes. After the vulcanization is completed, the material can be discharged.

Embodiment 3

[0025] Use an open mill to masticate high-temperature-resistant raw rubber for 10 minutes to 15 minutes at room temperature using the thin pass method, adjust the roller distance to 0.4mm to 0.8mm, adjust the roller speed ratio to 1:1.25 to 1:1.27, and masticate After completion, adjust the roller distance to 1.5mm to 2.5mm, adjust the roller speed ratio to 1:1.10 to 1:1.20, and then carry out mixing. The mixing temperature is 55°C to 70°C, and the mixing time is 6min to 15min. During the refining process, add the high-temperature-resistant rubber vulcanizing agent prepared by 0.63g of anti-scorch agent, 32.5g of vulcanizing agent, 1.5g of accelerator, 6g of active agent, 1.25g of stearic acid, and other existing fillers of components, and the mixing is completed Finally, put the high-temperature-resistant rubber into the vulcanization tank, set the vulcanization temperature to 151°C, and set the vulcanization time to 30 minutes. After the vulcanization is completed, the materi...

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Abstract

The invention discloses the technical field of vulcanization compounding agents, particularly a high-temperature resistant rubber vulcanizing agent. The high-temperature resistant rubber vulcanizing agent is prepared from a vulcanizing agent component, a promoting agent component, an active agent component, an anti-scorching agent component and stearic acid. A trisulfide is used as the vulcanizing agent component to effectively improve the mechanical property, the high-temperature resistance and the ageing-resistant performance of high-temperature resistant rubber; zinc oxide is used as the active agent component and has a buffering effect on a vulcanization system, so that the high-temperature resistant rubber can be softened and plastified, the phenomenon that the high-temperature resistant rubber is stuck to a roller during mixing is effectively reduced, and meanwhile, compression long-lasting deformation of the high-temperature resistant rubber is reduced; o-hydroxybenzoic acid is used as the anti-scorching agent component and can prevent early vulcanization of the high-temperature resistant rubber during vulcanization so as to ensure that the high-temperature resistant rubber carry out vulcanization at appropriate vulcanization temperature, can prevent a scorching phenomenon of the high-temperature resistant rubber caused by a high-temperature effect during a processing process, and the storage life of the high-temperature resistant rubber is prolonged while the operation safety of the high-temperature resistant rubber is improved.

Description

technical field [0001] The invention relates to the technical field of vulcanization compounding agents, in particular to a high-temperature-resistant rubber vulcanizing agent. Background technique [0002] Under the action of rubber for a long time under high temperature environment, the molecular chain will be destroyed or further cross-linked, resulting in embrittlement or softening. Therefore, high temperature resistant rubber has been widely used in various industries, such as EPDM rubber, because Its main chain is composed of chemically stable saturated hydrocarbons, and only contains unsaturated double bonds in the side chains, so it has excellent high temperature resistance, ozone resistance and aging resistance, and can be widely used in automotive parts, wire and cable protection Covers, high temperature resistant hoses, high temperature resistant tapes and seals and other fields. As we all know, rubber has valuable use value only after being vulcanized. Therefore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/02C08K5/40C08K5/47C08K3/22C08K5/13C08L21/00
CPCC08K13/02C08K3/22C08K5/13C08K5/40C08K5/47C08K2003/2296C08L21/00
Inventor 奚雪荣单迎梅苏复杨文兵
Owner 滨海县星光化工有限公司
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