The present invention discloses an expansion rubber hose and a production process thereof, comprising an inner tube cavity, an inner rubber layer outside the cavity, an inner reinforcement layer outside the inner rubber layer, and a 0.25 mm thick rubber layer bonded to the inner reinforcement layer. An outer reinforcement layer is arranged outside the inner reinforcement layer, with a 0.25 mm thick rubber layer compounded thereon, and an outer rubber hose is arranged outside the outer reinforcement layer. The outer rubber hose comprises the following components: 36%–40% natural rubber, 13%–15% butadiene rubber, 5%–8% zinc oxide, 1%–5% antioxidant A, 1%–5% antioxidant D, 3%–6% coumarone, 15%–25% N220 carbon black, 15%–20% calcium bicarbonate, 2%–4% petrolatum, 1%–2% stearic acid, 0.3%–0.5% sulfur, 0.5%–1% accelerator NOBS, and 0.1%–0.2% TMTD. The expansion rubber hose has high pressure resistance, good thermal insulation performance and flexible body, making it an ideal expansion hose.
Area Code: CN
Application Number: CN201710281894.X
