Rubber crawler

A rubber track and rubber technology, which is applied in the field of rubber track, can solve the problems of vulcanized rubber appearance and adhesiveness, rubber physical properties, etc., and achieve excellent workability, easy kneading operation, and reduce rubber scorching.

Inactive Publication Date: 2014-04-23
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Further, when the above-mentioned vulcanization retardant is combined with an existing vulcanization accelerator, depending on the compounding amount, such a combination has a problem of adversely affecting the physical properties of the rubber, resulting in a problem in the appearance and adhesiveness of the vulcanized rubber. Adverse effects of spray frost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 4

[0096] [Examples 1 to 4: Comparative Examples 1 to 3]

[0097] A 2200 mL Banbury mixer was used to knead and mix the rubber components, vulcanization accelerator and other additives according to the composition formulation shown in Table 1, thereby obtaining an unvulcanized rubber composition. Accordingly, the Mooney viscosity and the Mooney scorch time were measured according to the methods described below, and tensile evaluation and moisture-heat resistance adhesive durability evaluation were performed, and evaluated according to the following methods. The results are shown in Table 1.

[0098] "Mooney Viscosity and Mooney Scorch Time"

[0099] Evaluation was performed in accordance with JIS K 6300-1:2001.

[0100] In this evaluation, the value of Comparative Example 1 was set to 100. In the Mooney viscosity, a smaller value indicates better workability during kneading. In the Mooney scorch time, a larger value indicates better workability during kneading.

[0101] "Str...

Embodiment 4

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Abstract

The present invention provides a rubber crawler with high durability by using the rubber composition, wherein said rubber composition exhibits enhanced adherence between rubber and metal reinforcing material, such as steel cord and the like, particularly adherence after heat aging and under high humidity, without using vulcanizing retarder, such as CTP, which has possibility of generating problems, such as blooming and lowering rubber physical properties after vulcanization; using vulcanization accelerator having the adequate vulcanization retarding effect exerting excellent working ability; lowering rubber scorching as much as possible. The rubber crawler of the present invention comprises a rubber composition as the treatment rubber thereof, which comprises in the amount of 0.1 to 10 parts by weight of sulfenamide-containing vulcanization accelerator, 0.03 to 3 parts by weight of cobalt-containing composition as the equivalent amount of cobalt and 0.3 to 10 parts by weight of sulfur, relative to 100 parts by weight of rubber component.

Description

technical field [0001] The present invention relates to a rubber crawler using a rubber composition having excellent adhesion durability including a specific sulfenamide-containing vulcanization accelerator as a treated rubber. Background technique [0002] Currently, rubber tracks are used as running parts of machinery for agriculture, construction, and the like. Such rubber crawlers require strength to withstand severe usage environments, and therefore, a composite material (rubber-metal reinforcing material) having a metal reinforcing material coated with treated rubber such as steel cords is used to pass through such metal reinforcing materials. The reinforcing material increases the reinforcement and durability of the rubber. [0003] In order to produce these rubber-metal reinforcing materials, when bonding rubber and metal to each other, a method of simultaneously bonding rubber to metal and rubber to rubber, that is, a direct vulcanization bonding method, is known. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00
CPCB62D55/244C07D277/74C08K5/47C07D277/78C07D277/80C08L21/00
Inventor 谷本祥一
Owner BRIDGESTONE CORP
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