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Rubber composition for hoses, and hose

A rubber composition and rubber technology, applied in the direction of hoses, tubular articles, rubber layered products, etc., can solve the problems of shortened hose life, low reinforcement, and difficult processability, so as to ensure processability and improve resistance. flammability effect

Active Publication Date: 2014-07-23
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, it is well known that since chloroprene rubber (CR) which is a halogen-based polymer has low storage stability, rubber compositions using chloroprene rubber (CR) have disadvantages in processability when used to manufacture hoses. difficulty
Further, it is well known that since the metal hydroxide compound has low reinforcing properties, the wear resistance of the rubber composition using the metal hydroxide compound is greatly reduced, and thus the life of the hose is shortened

Method used

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  • Rubber composition for hoses, and hose
  • Rubber composition for hoses, and hose
  • Rubber composition for hoses, and hose

Examples

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Embodiment

[0096] Hereinafter, the present invention will be described in more detail with reference to examples thereof. However, the present invention is by no means limited to the following Examples.

[0097] First, a rubber composition (rubber sheet) as described below was prepared. The evaluation method of the rubber composition is shown below. The unit of the values ​​described as compounding amounts in Tables 1 to 4 is parts by mass. Further, in Tables 1 to 4, each of the rubber compositions of Examples and Comparative Examples contains (i) 80 parts by mass of carbon black (#65, manufactured by Asahi Carbon Co., Ltd.), (ii) 15 parts by mass Parts by mass of aromatic oil (anti-MOLEX NH-60T, manufactured by Nippon Oil Corporation), (iii) 5 parts by mass of zinc oxide, (iv) 3 parts by mass of magnesium oxide, (v) 2 parts by mass of wax (OZOACE0017 , manufactured by Nippon Seiro Co. Ltd.), (vi) 3 parts by mass of antioxidant (ANTIGENE6C, manufactured by Sumitomo Chemical Co., Ltd.)...

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Abstract

Provided are: a rubber composition for hoses which is capable of improving flame retardancy and wear resistance, while ensuring processability; and a hose. This rubber composition for hoses contains, as rubber components, a chloroprene rubber, a butadiene rubber and a styrene-butadiene rubber. The chloroprene rubber is contained in an amount of 60-80 parts by mass in 100 parts by mass of the rubber components. In addition, 5-25 parts by mass of silica is blended into this rubber composition for hoses per 100 parts by mass of the rubber components.

Description

technical field [0001] The present invention relates to a rubber composition for a hose and a hose, in particular to a rubber composition for a hose and a hose capable of improving flame retardancy (in particular, shortening afterglow response) and abrasion resistance while ensuring processability. Tube. Background technique [0002] Regarding hydraulic hoses used in construction machines and the like, consideration has been made to improve weather resistance, fatigue resistance, wear resistance, workability, etc. (for example, see Patent Documents 1 and 2). [0003] Recently, the use of hydraulic hoses in coal mines and mines is increasing, and improvements in flame resistance are required in consideration of safety during work. Here, the flame retardancy required for hydraulic hoses is mainly defined by MSHA standards (Mine Safety and Health Administration standards). [0004] In order to exhibit flame retardancy, it has been considered to add a large amount of metal hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L11/00C08K3/22C08K3/36C08L9/00C08L9/06
CPCB32B25/02B32B25/042B32B25/12B32B25/14B32B25/16B32B1/08B32B2264/102B32B2264/108B32B2307/306B32B2307/3065B32B2307/554B32B2597/00F16L11/083F16L11/125C08K3/22C08K3/36C08L9/00C08L9/06Y10T428/131C08L11/00
Inventor 常西洋平
Owner BRIDGESTONE CORP
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