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Rubber Seal Strip Vulcanization

The rubber seal can be classified according to the shape of section, vulcanization method, use site and use, etc.


(1) the non-continuous vulcanization method (after cutting the extruded strip in a certain length, the vulcanization tank vulcanization will be put into the finished product

To be vulcanized in the model;

(2) continuous vulcanization method (microwave continuous vulcanization method, salt bath continuous vulcanization method, hot air continuous vulcanization method). A. Microwave continuous vulcanization seal strip: microwave vulcanization technology was applied and widely promoted after the foreign energy crisis in the 1970s. With microwave continuous vulcanization technology can produce not only by the metal core, solid core, rubber and sponge rubber compound strip, a variety of materials and, in terms of energy saving, improve the work efficiency than other device for the continuous vulcanization method. This technology is

The world is recognized as the best method for producing extruded products. The characteristics of microwave heating is the heat produced in the heated object directly, rather than like a regular input from outside, this not only fast heating, and uniform distribution, to improve product quality and shorten the heating time. B. Continuous vulcanization seal of salt bath: salt bath vulcanization is adopted in salt bath system with nitrite, which is a great environmental pollution and has been gradually eliminated. Sulfide (Tmax: 450 ° C and Vmax: 60 m/s) also can achieve the role of flame pretreatment, and greatly improve the safety.

2. Classification according to rubber seal material

The rubber material of automobile seal strip has three kinds: solid glue, sponge rubber and hard rubber. Hard rubber can be as hard as shaohs A95. The sealant of the sealing strip is more used for aging, low temperature resistance, moisture resistant and chemical corrosion, especially the anti-ozone aging of EPDM. EPDM can with steel belt, steel wire braided belt, TPE, flannelette, flocking, PU coating, organic silicon coating compound, such as to ensure that the car interior with the outside world and itself is waterproof, dustproof, sound insulation, heat insulation, vibration, wear and adornment effect. Normally, EPDM seals can be used for more than ten years. It can also choose chloroprene rubber (CR) with good ozone resistance and good aging resistance. Considering the commonly used process performance of the rubber, sometimes also need to choose and use rubber, such as natural rubber (NR) with CR and styrene-butadiene rubber (SBR) with three kinds of rubber and polyethylene (PE), EPDM or NR rubber type and to improve the ozone resistance.

The product process: generally adopt chloroprene rubber, ethylene-propylene rubber, silicone rubber, natural - chloroprene butadiene and rubber, rubber and rubber and other anti-aging properties of fine rubber materials. Manufacturing methods: extrusion molding continuous vulcanization method, extrusion molding vulcanization method or die vulcanization method.