English
Rubber waterstops can be classified according to several methods such as cross-sectional shape, vulcanization method, application location and purpose, and materials used.
(1) Discontinuous vulcanization method (cut the extruded rubber strip to a certain length, put it in a vulcanization tank for vulcanization, and then make the extruded rubber strip semi-finished product
put into the mold for vulcanization);
(2) Continuous vulcanization method (microwave continuous vulcanization method, salt bath continuous vulcanization method, hot air continuous vulcanization method)
Several methods such as chemical methods).
a. Microwave continuous vulcanization composite sealing strip: Microwave vulcanization technology is a production technology that was applied and widely promoted after the foreign energy crisis in the 1970s. Using microwave continuous vulcanization technology can not only produce composite belts made of metal core, solid rubber and sponge rubber, but also has advantages over other continuous vulcanization devices in terms of energy saving and work efficiency. This technology is recognized worldwide as the best process for producing extruded products. The characteristic of microwave heating is that the heat is generated directly inside the object being heated, rather than being 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. Continuous vulcanization of sealing strips in salt bath: Salt bath vulcanization adopts a salt bath system containing nitrite, which pollutes the environment and has been gradually eliminated.
Vulcanization (Tmax: 450°C, Vmax: 60m/s) can also achieve the effect of flame pretreatment, and the safety is greatly improved.
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