SU670585A1 - Polychloroproprene rubber-base rubber mix - Google Patents

Description

one

The invention relates to the rubber industry, in particular to the development of a rubber mixture based on polychlororrhenic rubber.

Polychloroprene rubber based rubber mixture is known, including cobalt oxide, cobalt chloride, mineral nanofiller and technological additives, for example, softeners, vulcanizing agents, vulcanization accelerators, etc. 1.

Known rubber mixture has poor adhesion to silver.

The purpose of the invention is to increase the adhesion of rubber from this mixture to silver and to exclude the darkening of the latter.

The goal is achieved by the fact that a rubber mixture based on polychloroprene rubber, including cobalt oxide, cobalt chloride, mineral filler and technological additives, additionally contains rt-quinonioxime in the following ratio of components, wt.%:

Polychloroprene rubber 60-70 Cobalt oxide 0,15-3,6

Cobalt chloride 0,15-2,4

Technological additives1,1-4,0

p-hinondioxim 0.3-2.4

Mineral fillerUp to 100

In tab. 1 shows examples of the proposed rubber mixture based on chloroprene rubber in comparison with the known. Curing rubber compounds is carried out at a temperature of 151 ° C for 40 minutes.

Comparative characteristics of rubber are given in table. 2

From the data in the table it follows that the rubber from the proposed mixture has high strength of attachment to silver, high strength and good elastic properties. The combination of l-quinone dioxime and cobalt oxide with a cobalt salt allows to obtain a grip strength of 2.5 kg / cm. The proposed rubber mixture does not cause corrosion and darkening of silver.

Table 1

Claims (1)

Invention Formula Rubber mixture based on polychloroprene rubber, including cobalt oxide, cobalt chloride, mineral filler and technological additives, which, in order to increase the adhesion of rubber from this mixture to silver and eliminate darkening of the latter, the rubber mixture also contains in the following ratio of components, weight. % table 2 Polychloroprene rubber 60-70 Cobalt oxide 0,15-3,6 Cobalt chloride 0,15-2,4 Technological additives1,1-4,0 L-hinondioxim 0.3-2.4 Mineral fillerUp to 100 Sources of information taken into account during the examination 1. G. A. Blokh and others. Fastening of rubber on the basis of nairite A to steel without adhesive interlayers. Production of tires, rubber-technical and asbestos-technical products, 1975, No. 5, p. 17-18.