A kind of rubber composition and vulcanized rubber and its preparation method and application

A technology of rubber composition and polymer, which is applied in transportation and packaging, tire parts, vehicle parts, etc., and can solve problems such as poor resistance to dynamic ozone

Active Publication Date: 2019-03-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects of poor dynamic ozone resistance of the existing rubber composition, provide a new rubber composition capable of dynamic ozone resistance and have good comprehensive physical properties, and a preparation of vulcanized rubber Method, vulcanized rubber prepared by the method and use of said vulcanized rubber in the production of tires

Method used

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  • A kind of rubber composition and vulcanized rubber and its preparation method and application
  • A kind of rubber composition and vulcanized rubber and its preparation method and application
  • A kind of rubber composition and vulcanized rubber and its preparation method and application

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preparation example Construction

[0041] According to a preferred embodiment, the preparation method of vulcanized rubber of the present invention comprises the following steps:

[0042] 1. Put the main rubber into the internal mixer and masticate for 0.4-0.6min. Among them, the speed of the internal mixer is 85-95rpm, and the temperature is 75-85°C;

[0043] 2. Add 1 / 2-3 / 4 of the reinforcing agent, all of the silane coupling agent and at least part of the activator into the internal mixer, and knead at 70-160°C for 2-3 minutes;

[0044] 3. Add the remaining reinforcing agent and all components in the rubber composition of the present invention except the vulcanizing agent and the vulcanization accelerator to the internal mixer for mixing, and keep it until the internal mixing temperature reaches 150-170°C Unload the rubber material at 5-7min;

[0045] 4. Pass the rubber material three times on the open mill with a roller distance of 4-6mm and a roller temperature of 50±5°C; the mixed rubber is parked for 3.5...

Embodiment 1

[0076] Put the main rubber into the internal mixer and masticate for 0.5min, wherein the internal mixer speed is 90rpm and the temperature is 80°C;

[0077] Add the reinforcing agent accounting for 3 / 4 of the total weight of the reinforcing agent, all the silane coupling agents, and all the activators into the internal mixer, and knead for 2.5 minutes;

[0078] Add the remaining reinforcing agent and the components in the rubber composition Z1 of this example except the vulcanizing agent and the vulcanization accelerator to the internal mixer for mixing, and keep the internal mixing temperature at no less than 150°C Unload the compound when kneading for 5 minutes within the temperature range of 150°C and not higher than 170°C;

[0079] Pass the rubber material on the open mill with a roller distance of 5mm and a roller temperature of 55°C for three times; the mixed rubber is parked for 4 hours;

[0080] Adjust the speed of the internal mixer to 60rpm and the temperature to 40°C...

Embodiment 2-3

[0086] Embodiment 2-3 adopts the method identical with embodiment 1 to prepare vulcanized rubber, difference is:

[0087] The type and content of the main rubber in each embodiment are shown in Table 1; and the components in the rubber composition in each embodiment except the main rubber are shown in Table 2.

[0088] And, the rubber composition in embodiment 2-3 is respectively Z2 and Z3, and vulcanized rubber is respectively S2 and S3, and the silane coupling agent in embodiment 2-3 is respectively KH550 and Si75; The styrene-butadiene rubber in embodiment 2 It is the aforementioned emulsion polystyrene-butadiene rubber (ESBR) (the brand is 1712), and the styrene-butadiene rubber in Example 3 is the commodity of the aforementioned brand that is SSBR2636.

[0089] All the other are identical with embodiment 1.

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Abstract

The invention belongs to the field of rubber material and rubber processing application, the invention relates to a rubber composition, a preparation method of vulcanized rubber, the vulcanized rubber produced by the method and application of the vulcanized rubber in preparation of tires; the rubber composition comprises main body rubber, a reinforcing agent, a vulcanizing agent, a vulcanization accelerator, an activator and an antioxidant, the main body rubber comprises a first polymer and styrene butadiene rubber (SBR), the first polymer is at least one selected from the group consisting of ethylene propylene rubber (EPR), chlorinated butyl rubber (CR), chlorosulfonated polyethylene (CSM) and polyvinyl chloride (PVC); the vulcanized rubber formed by the rubber composition has good resistance to dynamic ozone, and also has good comprehensive physical properties.

Description

technical field [0001] The invention belongs to the field of rubber materials and rubber processing applications, and the invention relates to a rubber composition, a method for preparing vulcanized rubber, the vulcanized rubber prepared by the method and the application of the vulcanized rubber in preparing tires. Background technique [0002] Styrene-butadiene rubber is a general-purpose synthetic rubber with the highest output and largest consumption in the world. It is used in the production of tires and tire products, auto parts, wires and cables, hoses, tapes, shoes and other rubber industrial products. Wide range of applications. Ozone is one of the main hazards of rubber products. The oxidation of ozone in the atmosphere to materials is the main cause of polymer degradation and aging. The average equilibrium concentration of ozone on the earth's surface is 10 -6 % volume and continues to increase, and when the ozone concentration in the atmosphere reaches 10 -11 % ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/06C08L23/16C08L23/34C08L27/06C08L23/28C08L91/06C08K13/02C08K3/04C08K3/36C08K3/06C08K5/31C08K5/47C08K3/22C08K5/09C08K5/544C08K5/548C08K5/3437C08K5/18C08J3/24B60C1/00
CPCB60C1/00C08J3/24C08J2309/06C08J2423/16C08J2423/28C08J2423/34C08J2427/06C08K2201/011C08K2201/014C08L9/06C08L2201/08C08L2205/02C08L2205/035C08L23/16C08L23/34C08L27/06C08L23/283C08L91/06C08K13/02C08K3/04C08K3/36C08K3/06C08K5/31C08K5/47C08K2003/2296C08K5/09C08K5/544C08K5/548C08K5/3437C08K5/18
Inventor 王丽静曲亮靓李静王丽丽解希铭
Owner CHINA PETROLEUM & CHEM CORP
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