SU704963A1 - Vulcanized rubber mixture - Google Patents

Description

The invention relates to the rubber industry, in particular, to the rubber compound to be vulcanized. Known for the rubber mixture based on synthetic rubber, including 4 .... oil softener-oil PI-6SH-1Ya. However, rubber from such a vulcanizable rubber mixture does not possess sufficiently high physicomechanical properties; In addition, a rubber compound that is known to be vulcanizable does not allow light colored colored rubber to be obtained from it. The purpose of the invention is to improve the physicomechanical properties and the field of light colored colored rubber from this mixture. : This is achieved by the fact that a vulcanized rubber mixture based on synthetic rubber, including an oil softener, as the latter contains petroleum oil with a hardening temperature from 0 to -40 ° C, viscosity 4.032 .0 eats at 100 ° C and 30-60 wt.% Aromatic hydrocarbons in the amount of 3.5-10 weight-hours Per 100 weight parts rubber Oil oil is obtained by one or two stages of oil treatment of oil fractions by selective solvents, followed by dewaxing of raffinates and after-treatment of dewaxed oils with clays or hydroelectric, or by purification of wax-free oil. In tab. i shows the composition and properties of the softener (petroleum oil). In tab. 2 shows the rubber compound. by the proposed method in weight.h. per 100 weight parts . Rubber mixtures are made on a laboratory roll mill, vulcanized in a press at 155 ° C for 10 minutes. Table 3 shows the sequence and duration of the vulcanization process. In tab. 4 shows the results of tests of vulcanizates of the rubber mixture according to the proposed and known methods. It is shown that the vulcanizates according to the proposed method have improved physical and mechanical properties in comparison with the known ones: a higher tensile strength when dividing by an average of 27%, a higher resistance to tearing Bbiiue by 45%, a lower result 3 7049634

Warmering, lower temperatures of brittleness of the mixture allows to get light okrasiennye and lower hardness. We offer rubber rubber.

 , .Table

the name of the operation

Continuity, min

Planting on a roll of rubbers and mixing Introduction of zinc oxide, captax, FFA

Introduction 1/2 BS-100 soot, 1/2 liquid

m pshtel

Introduction 1/2 BS-100 soot, 1/2 liquid

mlgchitel

Introduction of sulfur and tkurama

Refining mixture (3 times

skip clearance 0.5 mm)

32 min

Total:

Table 4