| 摘要 |
Provided is a rubber composition that is for a hose and that can achieve both the flame-retardancy of a vulcanized rubber and the shelf stability of an unvulcanized rubber. Also provided is a hose. This rubber composition for a hose comprises a rubber component into which a compounding agent has been mixed and includes an organic compound. The rubber composition includes less than 70 parts by mass of chloroprene rubber in 100 parts by mass of the rubber component, includes, as an optional component of the rubber component, a chlorine polymer other than chloroprene rubber, includes, in the compounding agent, sulfur and, as an optional component, a chlorine compounding agent, and satisfies relational expression (1). (1) … Σn k-1AkXk > 0.2・Y. In relational expression (1), Ak represents the chlorination ratio (unitless) of one type of chlorine compound included in the rubber composition for a hose, i.e., the chloroprene rubber, the chlorine polymer other than chloroprene rubber, or the chlorine compounding agent, Xk represents the content ratio (mass%) of the one type of chlorine compound in the rubber composition for a hose, n represents the total number of chlorine compounds included in the rubber composition for a hose, and Y represents the total content ratio (mass%) of the organic compound and the sulfur in the rubber composition for a hose. |
