How to classify rubber seals based on vulcanization methods?

Release Time:

2025-03-26

Rubber waterstops can be classified in several ways, such as by cross-sectional shape

How to classify rubber seals based on vulcanization methods?

Rubber waterstop can be classified by several methods, such as cross-sectional shape, vulcanization method, application location and purpose, and materials used.

(1) Discontinuous vulcanization method (extrusion rubber strips are cut to a certain length, placed in a vulcanization tank for vulcanization, and then made into semi-finished extruded rubber strips

placed in a mold for vulcanization);

(2) Continuous vulcanization methods (microwave continuous vulcanization, salt bath continuous vulcanization, hot air continuous vulcanization)

Several methods such as chemical methods).

a. Microwave continuous vulcanization composite seal strip: Microwave vulcanization technology is a production technology that was applied and widely promoted abroad after the energy crisis in the 1970s. Using microwave continuous vulcanization technology can not only produce composite strips made of metal cores, solid rubber and sponge rubber, but also has advantages over other continuous vulcanization devices in terms of energy saving and improving work efficiency. This technology is a world-recognized optimal process for producing extruded products. The characteristic of microwave heating is that heat is generated directly inside the heated object, rather than input from the outside as usual. This not only generates heat quickly but also distributes it evenly, which is conducive to improving product quality and greatly shortening the heating area

time.

B. Salt bath continuous vulcanization seal strip: Salt bath vulcanization uses a salt bath system containing nitrites, which pollutes the environment and has been gradually eliminated.

Vulcanization (Tmax: 450°C, Vmax: 60m/s) can also achieve the effect of flame pretreatment, greatly improving safety.

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