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Rubber composition for hose, and hose

A technology for rubber compositions and hoses, applied in the directions of hoses, pipes/pipe joints/pipes, pipes, etc., can solve problems such as not yet obtained, and achieve the effect of ensuring flame retardancy

Inactive Publication Date: 2018-01-19
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, rubber capable of securing flame retardancy while achieving both softness after vulcanization and dimensional stability during extrusion production has not been obtained, and the development of such rubber is strongly desired

Method used

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

Examples

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Embodiment

[0122] The present invention is described in more detail below by way of examples. However, the present invention is by no means limited to the following examples and appropriate changes can be made without changing the essence thereof.

[0123] The polymer and rubber compositions described below were prepared. The evaluation method of the rubber composition is as follows. The units of the values ​​shown as compounding amounts in Tables 1 to 6 are parts by mass. In Tables 1 to 6, the rubber compositions of the respective examples and comparative examples further include (i) 5 parts by mass of zinc white (zinc oxide), (ii) 4 parts by mass of magnesium oxide, relative to 100 parts by mass of the rubber composition , (iii) 2 parts by mass of wax (OZOACE-0017, manufactured by Nippon Seiro Co., Ltd.), (iv) 3 parts by mass of antioxidant (ANTIGENE6C, manufactured by Sumitomo Chemical Co., Ltd.), (v) 2 parts by mass of cobalt stearate, (vi) 1 part by mass of sulfur, and (vii) 2 pa...

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Abstract

Provided is a rubber composition that is for a hose and that can achieve post-vulcanization flexibility as well as dimensional stability during production / extrusion, while also ensuring flame-retardancy. Also provided is a hose. This rubber composition for a hose includes a rubber component, carbon black, and a plasticizing component and is characterized by including 60 parts by mass or more of chloroprene rubber in 100 parts by mass of the rubber component, by comprising more than 50 parts by mass of the carbon black per 100 parts by mass of the rubber component, by the plasticizing componentincluding a flame-retardant plasticizer, and by comprising 2 parts by mass or more of the flame-retardant plasticizer per 100 parts by mass of the rubber component.

Description

technical field [0001] The present invention relates to a rubber composition for hoses and a hose. Background technique [0002] Research has been conventionally conducted to improve the weather resistance, fatigue resistance, abrasion resistance, etc. of hydraulic hoses used for construction machines and the like (for example, see Patent Document (PTL) 1). [0003] Hydraulic hoses have been increasingly used in mines such as coal mines in recent years, and are required to have improved flame retardancy for safety during work. For example, the flame retardancy required for hydraulic hoses is mainly defined by the standards of the US MSHA (Mine Safety and Health Administration). [0004] In addition, with the use of super-large hydraulic excavators in recent years, large-diameter high-pressure hoses have been increasingly used in harsher environments. This has created a tendency to require hoses with high pressure resistance and long life. [0005] However, the conventiona...

Claims

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Application Information

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IPC IPC(8): C08L11/00C08K3/04C08K3/36C08K5/521C08L9/00C08L91/08F16L11/08
CPCC08K3/04C08K5/521C08L9/00C08L91/08F16L11/08C08K5/02C08L9/06C08L91/00C08K2201/006C08L11/00C08K3/36C08L2201/02F16L11/04
Inventor 常西洋平
Owner BRIDGESTONE CORP
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