146results about How to "Extended scorch time" patented technology

The invention discloses high-temperature-resistant strong-resilience high-safety mixed rubber, and is characterized in that the mixed rubber comprises the following components by the weight percentage: 10-30% of natural rubber, 5-10% of chloroprene rubber, 5-10% of polyisoprene, 4-6% of polybutadiene, 5-15% of white carbon black, 8-12% of a silicon alkyl coupling agent, 10-20% of methyl vinyl silicone rubber, 3-4% of tetravinyltetramethylcyclotetrasiloxane, 1-2% of a catalyst, 1-3% of dimethyl hydroxyl silicone oil, 8-10% of dihydroxydiphenylsilane, 2-3% of a heat stabilizer, 2-3% of a surface modification agent, 5-8% of zinc oxide, 1-2% of stearic acid, 2-6% of sulfur, 1-2% of an accelerator, and 1-3% of other auxiliary agents. The wear resistance is improved, the life problem is overcome, introduction of butyl rubber is known to be capable of improving a wet-skid resistance ability of the mixed rubber, and the obtained mixed rubber has excellent mechanical properties, resilience and high-temperature resistance; and through innovating a rubber mixing technology and changing a feeding sequence, a portion of parts of the sulfur is put in masterbatch rubber to prolong the rubber scorching time, and the rubber processing safety performance is ensured.

Improved tensile mechanical and dynamic viscoelastic properties of silica-reinforced sulfur vulcanized rubbers can be achieved by compounding elastomers with silica in the presence of an alkoxysilane and a catalytic amount of a strong organic base. The strong organic base acts as a catalyst to accelerate the alkoxysilane-silica reaction, especially at high compounding temperatures, resulting in rubber compounds that exhibit reduced compound viscosity, improved dispersion of silica, and reduced filler flocculation after compounding, and reduced hysteresis and improved abrasion resistance in the vulcanized product, compared to similar compounds prepared at the temperature without the strong organic base catalyst.

Provided is a tire rubber composition blended with an antioxidant that is derived from a raw material other than petroleum resources, the tire rubber composition being capable of achieving an oxidation resistance equal to or higher than a conventional level and of improving forming processability and a low hysteresis loss property. The tire rubber composition includes a blend of: 100 parts by weight of a diene rubber; 5 to 130 parts by weight of an inorganic filler; and 0.01 to 10 parts by weight of a tea extract containing a catechin.