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(1) the choice of rubber species on the principle of rubber selection for oil resistant hose, should be the greater the difference between the solubility parameter and the transported oil the better. Usually, more nitrile rubber-based, or with the appropriate amount of chloroprene rubber and also used with other polymers and used to obtain better oil resistance.
Chloroether rubber is a good aging resistance to oil solvent resistant rubber, so it can be used to manufacture more demanding oil resistant hose.
(2) Vulcanisation system: the use of nitrile rubber with the oil-resistant hose rubber, its vulcanisation system is usually low-sulphur with a better effect; in the formulation of nitrile rubber and chloroprene rubber and use, if the proportion of chloroprene is greater than greater than nitrile, it should be based on the vulcanisation system of chloroprene rubber with a good. Chloroether rubber applicable vulcanising and activating agents are vinyl thiourea (NA-22), morpholine disulfide, red lead, zinc diethyldithiocarbamate (ZDC) and so on.
(3) reinforcement and filler: usually choose high wear-resistant furnace black, or with a half of the furnace black and use, the amount of 30-50 parts is appropriate. Outer layer of rubber formulations to half filler black-based, the amount is also appropriate to reduce.
In general, when the reinforcing agent reinforcing performance is greater, the better the vulcanised rubber anti-swelling properties, oil resistance is also improved. Therefore, in the oil-resistant hose rubber formula, without affecting its performance under the premise of the amount of reinforcing agent and filler within a certain range of Section appropriate increase.
(4) softener: in the oil hose rubber, the use of softener species should be considered insoluble in the transport medium and no accelerated rubber aging effect. In the case of meeting the process requirements, its dosage is reduced as much as possible.
In the nitrile and chloroprene rubber with, usually with the better effect of ester plasticisers, for the use of coreless method of production of hose or shaping of the higher requirements of the rubber, you can choose the appropriate amount of solid softeners.
Chloroether rubber is a good aging resistance to oil solvent resistant rubber, so it can be used to manufacture more demanding oil resistant hose.
(2) Vulcanisation system: the use of nitrile rubber with the oil-resistant hose rubber, its vulcanisation system is usually low-sulphur with a better effect; in the formulation of nitrile rubber and chloroprene rubber and use, if the proportion of chloroprene is greater than greater than nitrile, it should be based on the vulcanisation system of chloroprene rubber with a good. Chloroether rubber applicable vulcanising and activating agents are vinyl thiourea (NA-22), morpholine disulfide, red lead, zinc diethyldithiocarbamate (ZDC) and so on.
(3) reinforcement and filler: usually choose high wear-resistant furnace black, or with a half of the furnace black and use, the amount of 30-50 parts is appropriate. Outer layer of rubber formulations to half filler black-based, the amount is also appropriate to reduce.
In general, when the reinforcing agent reinforcing performance is greater, the better the vulcanised rubber anti-swelling properties, oil resistance is also improved. Therefore, in the oil-resistant hose rubber formula, without affecting its performance under the premise of the amount of reinforcing agent and filler within a certain range of Section appropriate increase.
(4) softener: in the oil hose rubber, the use of softener species should be considered insoluble in the transport medium and no accelerated rubber aging effect. In the case of meeting the process requirements, its dosage is reduced as much as possible.
In the nitrile and chloroprene rubber with, usually with the better effect of ester plasticisers, for the use of coreless method of production of hose or shaping of the higher requirements of the rubber, you can choose the appropriate amount of solid softeners.
