Rubber composition and vulcanized rubber and preparation method and application thereof

A technology of rubber composition and polymer, which can be used in transportation and packaging, special tires, vehicle parts, etc., and can solve problems such as poor resistance to dynamic ozone

Active Publication Date: 2017-08-08
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 resis

Method used

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  • Rubber composition and vulcanized rubber and preparation method and application thereof
  • Rubber composition and vulcanized rubber and preparation method and application thereof
  • Rubber composition and vulcanized rubber and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

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

[0042] 1. Put the main rubber into the internal mixer for 0.4-0.6min for mastication. The speed of the internal mixer is 85-95rpm and the temperature is 75-85℃;

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

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

[0045] 4. Pass the rubber material three times on an open mill with a roller distance of 4-6mm and a roller temperature of 50±5℃; park the mixed rubber for 3.5-4.5h;

[0046] 5. The speed of t...

Embodiment 1

[0076] Put the main rubber into the internal mixer for 0.5min to masticate, where the internal mixer rotates at 90rpm and the temperature is 80℃;

[0077] Add 3 / 4 of the total weight of the enhancer, all the silane coupling agent, and all the activator into the internal mixer, and mix for 2.5 minutes;

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

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

[0080] Adjust the speed of the internal mixer to 60rpm, the temperature is 40℃, add the vulcanizing agent and accelerator after mixing ...

Embodiment 2-3

[0086] Example 2-3 adopts the same method as Example 1 to prepare vulcanized rubber, the difference is:

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

[0088] In addition, the rubber compositions in Example 2-3 are Z2 and Z3, the vulcanized rubbers are S2 and S3, and the silane coupling agents in Example 2-3 are KH550 and Si75, respectively; the styrene-butadiene rubber in Example 2 It is the aforementioned emulsion polystyrene-butadiene rubber (ESBR) (brand number 1712), and the styrene-butadiene rubber in Example 3 is the aforementioned product under the brand number SSBR2636.

[0089] The rest are the same as in Example 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 application field of rubber materials and rubber processing. The invention relates to a rubber composition, a preparation method of a vulcanized rubber, a vulcanized rubber prepared by the method, and the application of the vulcanized rubber in the preparation of tires. Background technique [0002] Styrene-butadiene rubber is currently the world’s largest production and consumption of a general-purpose synthetic rubber. It is used in the production of tires and tire products, auto parts, wires and cables, hoses, tapes, shoes, and other industrial rubber products. Wide range of applications. Ozone is one of the main hazards of rubber products. The oxidation effect of ozone in the atmosphere on materials is the main reason for polymer degradation and aging. The average equilibrium concentration of ozone on the earth’s surface is 10 -6 % Volume and continue to increase, and when the ozone concentration in the atmosphere reaches 10...

Claims

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Application Information

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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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