| 摘要 |
A method of manufacturing a puncture resistant leakless material for tubeless tires, the puncture resistant leakless material manufactured thereof, and a method of spray coating the puncture resistant leakless material to tires are described. Thermoplastic elastomers are used as the framework material for the puncture resistant leakless material. The puncture resistant leakless material resists high temperature, low temperature, oil, and water, has high leakproof properties, and has low manufacturing costs. The puncture resistant leakless material also has a high tear resistance, a great resilience, and a long service life. The raw materials for manufacturing the puncture resistant leakless material fir tubeless tire do not need to undergo vulcanization, resulting in reduced energy consumption and lowered manufacturing costs. |
| 主权项 |
1. A method for manufacturing puncture resistant leakless material having a thermoplastic elastomer as a framework material, comprising the steps:
(1) stirring raw material A in a reactor for foaming for 12 to 24 hours; (2) incubating raw material B in an internal mixer for 30 minutes at a constant temperature of 120° C., discharging, cooling, crushing the raw material B to particles, and allowing the particles to remain still for 48 hours; (3) preparing raw material C; (4) mixing the raw material A from step (1) and the raw material B from step (2) at a ratio of A:B=1:0.4-0.75, supplying the mixed material into an extruder, and adding the component C in when ⅓ of the mixture of the raw material A and the raw material B has been extruded, wherein the extruder is connected to a reactor and a stirrer, and wherein the stirrer is rotating at 120 revolutions per minute; and (5) after adding all the raw materials, refluxing and stirring at 225° C. for 4 hours until all the raw materials melt completely, discharging and cooling to 170-190° C. to obtain the puncture resistant leakless material, wherein a combination of raw materials A, B, and C is selected from the group consisting of; a) raw material A, which contains 100 portions of SEPS by weight and 80 to 150 portions of MDT silicone oil by weight; component B, which contains 60 portions of silicon rubber by weight, 30 to 50 portions of carbon black by weight, 5 to 20 portions of microsilica by weight and 5 to 20 portions of calcium carbonate by weight; and component C, which contains 0.5 to 2 portions of polyether modified silicone oil by weight, 10 to 30 portions of di(tert-butoxy)diacetoxy-silane, 0.6 to 1.2 portions of dibutyltin dilaurate by weight and 0.5 to 1.5 portions of a cross-linking agent by weight; b) component A, which contains 100 portions of SEBS by weight and 150 to 300 portions of naphthenic hydrocarbon oil by weight; component B, which contains 50 portions of butyl rubber by weight, 10 portions of chlorobutyl rubber by weight, 10 portions of polybutylene by weight, 30 to 50 portions of carbon black by weight, 10 to 30 portions of calcium carbonate by weight, 10 to 20 portions of argil by weight, 1 to 5 portions of softener by weight and 1 to 5 portions of zinc oxide by weight; and component C, which contains 5 portions of modified resin by weight, 100 to 150 portions of terpene resin by weight, 25 to 50 portions of petroleum resin by weight and 1.5 to 3 portions of coupling agent by weight; and c) component A, which contains 100 portions of SEEPS by weight and 100 to 250 portions of paraffin oil by weight; component B, which contains 40 portions of bromobutyl rubber by weight, 20 portions of ethylene propylene rubber by weight, 30 to 50 portions of carbon black by weight, 1 portion of magnesium oxide by weight, 1 to 5 portions of zinc oxide by weight, 3 to 5 portions of stearic acid by weight, 2 portions of DM by weight, 10 to 20 portions of talc powder by weight, 10 to 20 portions of diatomite by weight and 2 to 5 weight portions of softener by weight; and component C, which contains 80 to 120 portions of terpene resin by weight, 50 to 80 portions of petroleum resin by weight and 1.5 to 3 portions of coupling agent by weight. |
