The acid resistant rubber hose is mainly used to transport acid medium and can be used in acid environment for a long time. It has good acid resistance, corrosion resistance and mechanical properties. It is generally composed of an inner rubber layer, a rubberized layer, an outer rubber layer, etc. the rubberized layer is mainly used to enhance the adhesion among the inner rubber layer and the reinforced layer of the rubber hose to ensure that there is no delamination during use. When using natural rubber as the main raw material to prepare acid resistant rubber hose glass fiber canvas rubbers, appropriate amount of recycled rubber can effectively reduce the cost of raw materials.
1. vulcanization formula of natural rubber/reclaimed rubber used to produce glass fiber canvas rubbers
55 phr of natural rubber, 45 phr of reclaimed rubber, 2.5 phr of zinc oxide, 0.3 phr of stearic acid, 1 phr of antioxidant a, 1 phr of antioxidant D, 12 phr of carbon black n660, 16 phr of light calcium carbonate, 6 phr of engine oil, 5 phr of pine tar, 3 phr of coumarone resin, 1.3 phr of adhesive a, 2 phr of adhesive RS, 0.45 phr of accelerator CZ, 0.35 phr of accelerator DM, 1.4 phr of sulfur; 152.3 copies in total.
70 phr of natural rubber, 30 phr of reclaimed rubber, 3.5 phr of zinc oxide, 1 phr of stearic acid, 1.5 phr of antioxidant a, 11 phr of carbon black n660, 35 phr of light calcium carbonate, 18 phr of clay, 6 phr of coumarone resin, 6 phr of pine tar, 7 phr of No. 30 engine oil, 2.2 phr of binder RH, 1.3 phr of binder RS, 0.6 phr of accelerator nobs, 0.3 phr of accelerator DM, and 2.3 phr of sulfur; 195.7 copies in total.
2. vulcanization formula of natural rubber/cis-1,4-polybutadiene rubber/recycled rubber used to produce glass fiber canvas rubbers
40 phr natural rubber, 15 phr cis-1,45 phr reclaimed rubber, 2.5 phr zinc oxide, 0.6 phr stearic acid, 1 phr antioxidant D, 15 phr carbon black n660, 20 phr clay, 4 phr heavy oil, 7 phr pine tar, 1.2 phr coumarone resin, 0.1 phr accelerator D, 0.75 phr accelerator M, 0.35 phr accelerator DM, 1.4 phr sulfur, 0.3 phr salicylic acid; 153.9 copies in total.
Acid resistant hose glass fiber canvas rubbers are required to have good fluidity, fabric permeability, adhesion and flexion resistance, so as to ensure a close combination with the reinforcement layer. Cracks e5lyy54, delamination and other problems are not easy to occur in long-term use. They are generally processed from natural rubber, cis-1,4-polybutadiene rubber and their blends (or with styrene butadiene rubber). Appropriate amount of recycled rubber such as tire recycled rubber can effectively reduce the cost of raw materials; After the glass fiber canvas rubbers are mixed with recycled rubber, not only the rubber formula but also the production process parameters need to be adjusted. We will discuss relevant issues with you later.
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