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Isoprene rubber blend and its preparation method

A technology of isoprene rubber and blends, applied in the field of isoprene rubber blends and their preparation, can solve the problems such as the need for further improvement of anti-fatigue properties

Inactive Publication Date: 2012-03-21
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, Huang Baochen et al. of Qingdao University of Science and Technology combined trans-1,4-polyisoprene prepared by bulk precipitation polymerization with isoprene rubber, although the flex cracking resistance of the rubber was improved to a certain extent. performance, however, its anti-fatigue performance needs further improvement

Method used

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  • Isoprene rubber blend and its preparation method
  • Isoprene rubber blend and its preparation method
  • Isoprene rubber blend and its preparation method

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preparation example Construction

[0040] Correspondingly, the present invention also provides a kind of preparation method of isoprene rubber blend, comprises the following steps:

[0041]After masticating 5-50 parts by weight of trans-1,4-polyisoprene at 60-100°C, with 60-100 parts by weight of isoprene rubber, 5-100 parts by weight of reinforcing filler, 1 ~25 parts by weight of in-situ graft modification auxiliary agent, 0~40 parts by weight of compound rubber and the second additive are mixed at 120~180°C to obtain a masterbatch. The second additive includes active agent, anti-aging One or more of softeners and softeners;

[0042] The masterbatch is mixed with a third additive at 15-100°C to obtain a rubber compound, the third additive includes a vulcanizing agent and / or an accelerator, and the weight sum of the second additive and the third additive is 0 to 25 parts by weight;

[0043] The mix was vulcanized to obtain an isoprene rubber blend.

[0044] In the above preparation method, the isoprene rubb...

Embodiment 6～8

[0063] The preparation of embodiment 6~8 natural rubber / solution polystyrene-butadiene rubber / guttabol blend

[0064] 1. Mix gutta percha in general rubber mixing equipment at 70°C for 3 minutes, then blend with solution polystyrene butadiene rubber and natural rubber, and add various compounding aids except vulcanizing agent and accelerator, Mixed at a high temperature of 140°C for 12 minutes to obtain a masterbatch, the specific raw materials and ingredients are shown in Table 3;

[0065] 2. Park the above masterbatch to cool, when the temperature of the rubber material is within the range of normal temperature -100°C, add vulcanizing agent and accelerator in turn, pass through 3 to 5 times and then release the sheet to obtain the mixed rubber;

[0066] 3. After the rubber mixture was parked for 12 hours, the rubber mixture was vulcanized at 150° C. for 25 minutes to obtain a blend of isoprene rubber.

[0067] The performance results of the isoprene rubber blend prepared in...

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Abstract

The invention discloses an isoprene rubber blend and its preparation method, the isoprene rubber blend comprises the following raw materials: 60-100 parts of isoprene rubber, 5-50 parts of trans-1,4-polyisoprene, 5-100 parts of reinforcing filler, 1-25 parts of in-situ grafted modification additive, 0-40 parts of cooperated rubber and 0-25 parts of first additive. Compared with the prior art, the in-situ grafted modification additive is performed chemical reaction with the reinforcing filler, and is simultaneously performed grafting reaction with function groups like double bond of a rubber molecular chain, so that the interface bonding strength between the organic polymer and the reinforcing filler as well as the dispersion level of the reinforcing filler in rubber can be substantially enhanced, and the fatigue resistance performance of the isoprene rubber blend is increased. The test results indicate that the isoprene rubber blend of the invention has favorable flex cracking resistance and excellent general mechanical performance.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to an isoprene rubber blend and a preparation method thereof. Background technique [0002] With the rapid development of my country's national economy, cars and trains have entered the era of high-speed driving. Rubber products have been widely used, so higher requirements have been put forward for the rubber materials used to prepare rubber products. [0003] Isoprene rubber is synthesized from isoprene, and its full name is cis-1,4-polyisoprene rubber. Because its structure and properties are similar to natural rubber, it is also called synthetic natural rubber. Isoprene rubber has excellent comprehensive properties, good physical and mechanical properties and processing properties, and the compounding agent is easy to mix and disperse evenly, and has good molding adhesion, so it is widely used in tires and vibration damping and other fields. Rubber products in the fields of tire...

Claims

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Application Information

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IPC IPC(8): C08L9/00C08L7/00C08K13/02C08K3/34C08K3/36C08K3/04C08K5/54C08K5/10C08K5/521
Inventor 黄自华谭宇胡天辉杨军
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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