SU711058A1 - Vulcanized rubber mixture based on polychloroprene rubber - Google Patents

Description

(54) VOLCANIZABLE RUBBER MIXTURE ON THE BASIS OF POLYCHLOROPRENE RUBBER

The invention relates to the rubber industry, in particular to the development of a vulcanizable rubber mixture based on polychloroprene rubber. Known vulcanized rubber mixture based on polychloroprene rubber, including zinc oxide, magnesium oxide and a vulcanization accelerator, for example polysulfidecarbazole ll. However, this rubber mixture has a low cure rate. The purpose of the invention is to increase the rate of vulcanization of the rubber compound. The goal is achieved by the fact that a rubber mixture based on polychloroprene rubber is vulcanizable, includes zinc oxide and magnesium oxide and contains carbazole as a vulcanization accelerator in the following ratio of components, parts: polychloroprene rubber 1-10 Zinc oxide Magnesium oxide 4-10 Karba.zolO, O5-1 Carbazop (dibeneopyrrole) of formula 1 with a melt temperature of 245-247 ° C, is produced by MRPA 6-O9-3815-67 and is used in the manufacture of hydronic dyes. I. the invention is made by npHhiepoM. Example. The efficacy of carbazole is shown in the rubber mixture of the composition, weight 4-1 Polychloroprene xayiyK 100, paraffin 3, neozon D 1, carbon black PM-75 5O, magnesium oxide 1p, booster vulcanizer, all pink rubber prepared on standard chloroprene Nairit KR-50 rubber. In the above recipes of rubber mixtures, oxides of zinc and magnesium are used as vulcanizing agents, their usual oz {yevka when used together is in the range of 9-2O weight .4. Paraffin is used in

as a dispersant in order to facilitate the introduction of fillers and ensure their uniform distribution in the mixture, the usual dosage is 2-3 parts by weight. Neozon D is used as an antioxidant, the usual dosage is 1-2 wt. H. PM-75 carbon black is taken as a filler, its usual dosage in rubber mixtures is in the range of 10-O in its. depending on the purpose and conditions of use of rubber. As a vulcanization accelerator in the known rubber.

The second mixture is based on the ethylene grade Merkazin I, the usual dosage in mixtures O, 2-1, OO, parts by weight, the optimal dosage is 0.5 parts by weight. The dosages of target supplements listed in the table are within the limits specified for them.

Rubber compounds are prepared according to the conventional technology of rubber production and vulcanized at various times. The test results for rubber compounds and rubbers obtained from them are given in the table.

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Claims (1)

6 As can be seen from the presented data, the cure rate of the proposed mixture is more than 2 times higher than the known one. At the same time, the physicomechanical properties of rubber are one or more of the known technical solutions. Vulcanizable rubber compound on a new polychloroprene rubber, including single oxide, magnesium oxide and a vulcanization accelerator, so that, in order to increase the vulcanization of the rubber mixture, Carzol contains the following as a vulcanization accelerator the ratio of components, weight. parts.: Polychloroprene rubber. toto Zinc oxide 4-10 Magnesium oxide 4-10 Carbazole 0.05-1. Sources of information taken into account in the examination 1. USSR author's certificate 411178, cl. C 08 L 9 / GS, 1974.