Oil-filled rubber refers to a mixture of a certain amount of mineral oil filled in rubber, including natural rubber and synthetic rubber. The oil-filled oil can be carried out in natural or synthetic latex, or in dry glue. The former is called wet-filled oil, and the latter is called dry-filled oil.
(1) Oil filling purpose
The purpose of oil filling is to improve the processing performance of raw rubber, reduce its viscosity, and thus achieve the purpose of reducing the energy consumption of rubber mixing; second, to reduce costs; third, to improve some physical and mechanical properties of rubber (such as wet skid resistance).
(2) Selection of filling oil
Because petroleum-based mineral oil has good compatibility with rubber, it is suitable for a large amount of filling, and it is cheap and easy to obtain. After a large amount of filling, the negative impact on performance is small, so it is the preferred object.
(3) Oil filling process
The oil-filling operation can be selected in the rubber latex state. In the case of natural rubber, it is before the acid is solidified; the synthetic rubber oil-filling should be at a stage where a certain degree of polymerization (ie, the desired molecular weight) has been reached, but it has not yet solidified. get on.