Fabric-reinforced water and air hoses are mainly used for water and air transport operations and are generally made up of an inner rubber layer, a middle rubber layer, and an outer rubber layer. The rubber materials need to have high resistance to pressure, aging, and good adhesion, usually processed using natural rubber, chloroprene rubber, and styrene-butadiene rubber E6LYY78 as the main raw materials. Tire reclaimed rubber, produced from recycling used tires, is priced at roughly one-third of natural rubber. It can be used for the outer, middle, and inner layers of fabric-reinforced water and air hoses, reducing raw material costs while improving processing performance.
1. Vulcanization formula for the outer layer rubber of fabric-reinforced hoses with tire reclaimed rubber:
Natural rubber 10 parts, chloroprene rubber 40 parts, tire reclaimed rubber 50 parts, zinc oxide 3 parts, stearic acid 1.5 parts, magnesium oxide 5 parts, antioxidant A 0.5 parts, antioxidant D 0.5 parts, wax 1 part, carbon black N774 8 parts, light calcium carbonate 19 parts, heavy oil 8 parts, dibutyl phthalate 4.5 parts, accelerator M 0.1 parts, accelerator D 0.05 parts, sulfur 0.55 parts; total 151.7 parts.
Natural rubber 15 parts, styrene-butadiene rubber 30 parts, tire reclaimed rubber 55 parts, zinc oxide 3 parts, stearic acid 1.5 parts, antioxidant A 0.5 parts, antioxidant D 0.5 parts, wax 1 part, carbon black N330 12 parts, mixed-air carbon black 12 parts, light calcium carbonate 20 parts, pine tar 1.5 parts, cumaron resin 6 parts, accelerator M 2.6 parts, accelerator DM 0.8 parts, accelerator TMTD 0.1 parts, sulfur 1.4 parts; total 162.9 parts.
2. Vulcanization formula for the middle layer rubber of fabric-reinforced hoses with tire reclaimed rubber:
Natural rubber 30 parts, styrene-butadiene rubber 30 parts, tire reclaimed rubber 40 parts, zinc oxide 3 parts, stearic acid 1 part, antioxidant D 1 part, carbon black N774 24 parts, kaolin 40 parts, light calcium carbonate 33 parts, asphalt 3 parts, accelerator DM 0.7 parts, accelerator TMTD 0.15 parts, sulfur 1.55 parts; total 207.4 parts.
3. Vulcanization formula for the inner layer rubber of fabric-reinforced hoses with tire reclaimed rubber:
Natural rubber 50 parts, tire reclaimed rubber 50 parts, zinc oxide 3 parts, stearic acid 1.5 parts, antioxidant A 1 part, antioxidant D 1 part, furnace black 30 parts, light calcium carbonate 53 parts, heavy oil 9 parts, wax 1 part, accelerator M 0.5 parts, sulfur 1.5 parts; total 201.5 parts.
Natural rubber 15 parts, oil-extended styrene-butadiene rubber 25 parts, tire reclaimed rubber 60 parts, zinc oxide 3 parts, stearic acid 1.5 parts, antioxidant A 1 part, carbon black N330 25 parts, kaolin 25 parts, light calcium carbonate 42 parts, pine tar 2 parts, heavy oil 2 parts, accelerator DM 0.15 parts, accelerator CZ 0.55 parts, sulfur 1.4 parts; total 203.6 parts.
When using tire reclaimed rubber in fabric-reinforced hoses to cut costs, different usage scenarios and rubber layer requirements necessitate adjusting the reclaimed rubber proportion, rubber formulas, and production process parameters according to actual needs, effectively reducing raw material costs and energy consumption while ensuring hose performance.
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