The invention provides a butyl rubber for tires. The butyl rubber is prepared from the following raw materials in parts by weight: 80-100 parts of butyl rubber, 20-30 parts of white carbon black, 10-20 parts of cyclosilicone oil, 3-10 parts of silane, 0.1-0.5 part of sulfur powder, 0.5-3 parts of zinc oxide and 1-10 parts of stearic acid. The preparation method of the butyl rubber comprises: mixing the raw materials for 1-3 hours by use of an internal mixer and then cooling. The rotating speed of mixing is 100-120r/min and the cooling temperature is 50 DEG C. The method of adding the mixing raw materials comprises the following steps: firstly, adding the butyl rubber, adding 1/2 of white carbon black and 1/2 of cyclosilicone oil 10 minutes later, adding 1/2 of white carbon black and 1/2 of cyclosilicone oil 20 minutes later, and adding the rest raw materials 10 minutes later. The butyl rubber for tires is smooth in surface, soft in texture, and even in air inflation and expansion; as a result, the joint strength and the processability can be improved obviously, the problem of softening of the finished product inner tube at the later stage of use is solved and the aging resistance of the finished product inner tube is improved.
Butyl rubber for tires
2015-06-03
Patent
Electronic Resource
English
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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