| 摘要 |
The invention to a polymeric alloy and to a process for preparing the same. According to the invention, the polymeric alloy is a mixture, subjected to the vulcanization, said mixture comprising 75 ... 100 parts butadiene-nitrile rubber, up to 80 parts plasticized polyvinyl chloride or waste based on plasticized polyvinyl chloride, zinc oxide, stearine, magnesium oxide, antimony trioxide, tetramethyl thiuram disulphide and sulphur, the parts being expressed by weight related to the full amount of the mixture. The claimed process for preparing the polymeric alloy by mixing in a mill or by alligation and milling consisits in mixing plasticized polyvinyl chloride or waste based on polyvinyl chloride in the mill at a temperature ranging from 40 ... 60 degree C or 40 ... 80 degree C, for 10 min, adding additives, a concentrate based on butadiene nitrile rubber milled beforehand, tetramethyl thiuram disulphide as vulcanization accelerators thereby resulting a milled sheet vulcanized by pressing, said material having a tensile strength of 8.5 Mpa. an elongation on break of 400% and a dielectric strenght of 25kV/mm for the resulting material produced by mixing or a tensile strength of 10Mpa, an elongation on break of 600% and a dielectric strength of 30 KV/mm for the material produced by alligation and milling.
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