Reclaimed rubber powder is a waste rubber, waste rubber products (mainly waste tires) processed by the role of physical machinery, and the reclaimed rubber production process is more simple, without desulfurization, so the price is lower than the reclaimed rubber was Widely used in the production of various types of rubber products. Common reclaimed rubber powder tire rubber, nitrile rubber powder, EPDM powder, etc., different production processes produced by the different fineness of reclaimed rubber, use is not the same.
Common reclaimed rubber powder production process methods include room temperature grinding method, low temperature grinding method and wet or solution method. Among them, the crushing method at room temperature mainly uses the effect of shearing force to crush the rubber, and the shape of the reclaimed rubber powder produced is irregular. The surface of the particle has numerous irregularities and burrs, and the particle size of the rubber powder is 0.3-1.4mm. Generally in the process of using the crushing method to produce reclaimed rubber powder at room temperature, the cumulative heat generation is small. Since the rubbish rubber contains an antioxidant, the surface of the powder rubber is less oxidized. The surface area of the reclaimed rubber powder at room temperature is larger than that of the cryogenic crumb rubber powder, Reclaimed rubber oil absorption speed, easy to accept the role of heat and oxygen, oxidative degradation is ideal, good regeneration effect; Room temperature renewable rubber particles irregular shape, is conducive to surface treatment and activation.
The regenerated rubber powder produced by using the low temperature pulverization method mainly uses crushing rubber to crush the rubber. The shape of the rubber powder particles of the regenerated rubber powder is regular, the particle surface is smooth, and the particle size is 0.075-0.3mm, The probability of oxidation is small.
The reclaimed rubber powder produced by the wet method or the solution method has larger surface area and higher activity than the normal temperature method and the low temperature method, and the size of the reclaimed rubber powder is more than 0.75mm.
Crumb rubber (1.0-6.0mm) can be mixed with polyurethane for the laying of playgrounds, tennis courts, gym floors and school playgrounds, but also for the manufacture of floor tiles, sound insulation and insulation materials; 0.5-1.0mm) can be used as raw materials for the production of reclaimed rubber products, can also be used as paving asphalt modified mixed materials; fine powder (0.3-0.5mm) can be directly mixed with raw rubber used in the production of rubber products, the general dosage Between 10% -20%; fine powder (<0.3mm) can all be used to make solid tires and various types of shock absorption rubber products; fine powder (> 0.075mm) can be used to produce tires with the amount should be About 30%, so as not to affect the mechanical properties of the tire.
There are many types of tire rubber powder. Which one do you choose?
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