RUBBER PRODUCT AND ITS MANUFACTURE THEREOF
PROBLEM TO BE SOLVED: To improve both booming and a compression permanent set prevent a malodor and improve tensile properties by vulcanizing a rubber product and then heat-history treating thereof in an inert gas. SOLUTION: A heat-history treatment in an inert gas is conducted, for example, in such...
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| creator | MABUCHI TOSHIAKI |
| description | PROBLEM TO BE SOLVED: To improve both booming and a compression permanent set prevent a malodor and improve tensile properties by vulcanizing a rubber product and then heat-history treating thereof in an inert gas. SOLUTION: A heat-history treatment in an inert gas is conducted, for example, in such a way that a vulcanized rubber product is placed in an oven in a nitrogen gas, an argon gas, a neon gas, a sulfur hexafluoride gas or the like and is then heat-history-treated. The heating temperature and time for the heat-history treatment are usually 100-200 deg.C and 0.1-5 hours, respectively, though they depend on kinds of rubber sources and applications of the rubber product. A polymer having a low polymerization degree mixed in the compound and a residue of the vulcanization product are evaporated and further an effect of oxidative deterioration is removed by such an operation. The rubber composition used as a source material for the rubber product is not limited but one example is obtained by mixing a filler and a vulcanizing agent or the like with a natural rubber and/or a synthetic rubber such as a polysoprene or the like. |
| format | Patent |
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SOLUTION: A heat-history treatment in an inert gas is conducted, for example, in such a way that a vulcanized rubber product is placed in an oven in a nitrogen gas, an argon gas, a neon gas, a sulfur hexafluoride gas or the like and is then heat-history-treated. The heating temperature and time for the heat-history treatment are usually 100-200 deg.C and 0.1-5 hours, respectively, though they depend on kinds of rubber sources and applications of the rubber product. A polymer having a low polymerization degree mixed in the compound and a residue of the vulcanization product are evaporated and further an effect of oxidative deterioration is removed by such an operation. 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SOLUTION: A heat-history treatment in an inert gas is conducted, for example, in such a way that a vulcanized rubber product is placed in an oven in a nitrogen gas, an argon gas, a neon gas, a sulfur hexafluoride gas or the like and is then heat-history-treated. The heating temperature and time for the heat-history treatment are usually 100-200 deg.C and 0.1-5 hours, respectively, though they depend on kinds of rubber sources and applications of the rubber product. A polymer having a low polymerization degree mixed in the compound and a residue of the vulcanization product are evaporated and further an effect of oxidative deterioration is removed by such an operation. The rubber composition used as a source material for the rubber product is not limited but one example is obtained by mixing a filler and a vulcanizing agent or the like with a natural rubber and/or a synthetic rubber such as a polysoprene or the like.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BASIC ELECTRIC ELEMENTS CABLES CHEMISTRY COMPOSITIONS BASED THEREON CONDUCTORS ELECTRICITY GENERAL PROCESSES OF COMPOUNDING INSULATORS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP |
| title | RUBBER PRODUCT AND ITS MANUFACTURE THEREOF |
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