SU905236A1 - Rubber stock based on butyl rubber - Google Patents

Description

(S) RUBBER MIXTURE ON THE BASIS OF BOTTIL

The invention relates to rubber mixtures based on elastomers of low unsaturation and can be used in the tire industry, the industrial rubber industry and the cable industry. Known rubber compound based on butyl rubber, including ethylene-propylene rubber, dispersant, canister group, vulcanization activator, vulcanization accelerators, filler, agent to increase cohesive strength, modifier and plasticizers at a ratio of components, wt .: 3.76: 7.72: 11 , 32: 1.6: 2.57: 11.32, 30.88: 1.29: 0.52, respectively, p J. However, this rubber mixture does not provide an improvement in the plasto-elastic properties of the mixture and an improvement in the physicomechanical properties of rubber from this mixture, as well as indicators of resistance to heat and nnomu aging. The purpose of the invention is to improve the plasto-elastic properties of the mixture and increase the physicomechanical properties of rubber from this mixture, as well as indicators of resistance to thermal and ozone aging. This goal is achieved by the fact that a rubber compound based on butyl rubber, including ethylene-propylene rubber, dispersant, vulcanizing group, vulcanization activator, vulcanization accelerators, filler, cohesive strength agent, modifier and plasticizers, as the last mixture contains hydrocracking base oil, polyethylsiloxaneslox. and diisooctyl adipate, and as a modifier - lecithin in the following ratio of components, wt .: Butyl rubber 37, Ethylene-propylene rubber 2.63-12.63 Vu 0.91-0.95 treatment group Accelerators vul0, 65-0.69 kanization Activator vulka2, 52-2.63 nizatsiya 0.50-0.53 Dispersant Agent for improving cohesion1, 26-1.32 other strength Base Oil 3 , 59-, 99 hydrocracking Polyethylsiloxano5, 27-7.31 va liquid 0.60-0.83 Diisooctyl adipate 30.29-31, Filler

Butyl rubber (BK 1b75

Ethylene propylene rubber (keltan 512

Sulfur

Altax

Tiurai

Zinc oxide

Stearin

Resin Octafor

Sa: ka (11G, -50)

Diisooctyl adipate

Polyethylsiloxane liquid {ПЭ-З)

Hydro Base Oil cracking

Lecithin Stabiloil-18 (oil)

, 97 3.9 37.86 it3.76

5.27 6.25 7.31

3.59 26, EE 0.26 0.25 0.25

0.25

11.1: 4 Lecithin 0.25-0.26 Filler Else Examples 1-. A rubber compound is prepared based on the components listed in Table 1. Properties of mixtures and rubbers of them are presented in table 2. As can be seen from Table 2, the rubber from the proposed mixture in comparison with the known for its low-temperature properties, brittleness temperature, ozone and heat aging, temperature resistance, tensile strength and relative elongation have a significant advantage. Table 1

relative elongation

residual lengthening coefficient of ozone aging

,, gh

. fcT 10 ° strength

relative elongation

table 2

1.07 0.97 0.86 0.92

0, S9 0.96 0.93 0.78

0.85 0.76 0.67 0.73

905236

8 Continuation g bps.

Claims (1)

Claim Butyl-25 rubber based mixture comprising ethylene-propylene rubber, dispersant, vulcanizing group, vulcanization activator, vulcanization accelerators, filler, cohesive strength enhancer, modifier and plasticizers, in order to improve plasto-elastic In addition to improving the physicomechanical properties of rubbers from this mixture, as well as indicators of resistance to heat and ozone aging, the mixture contains hydrocracking base oil, polyethylsilane as a plasticizer Sanov liquid and di-- izoktiladipinat _40, and as a modifier - lecithin at sleduyuschem- component ratio, wt%: Butyl 37,86-49,97. Ethylene Propylene - ₄₅ Len Rubber 2.63 ~ 12.63 Vulcanizing Group 0.91-0.95 Accelerators cannization 0.65-0.69 Activator cannization 2,52-2,63 Dispersant 0.50-0.53 Agent for improving cohesion strength 1.26-1.32 Base oil hydrocracking 3,59-4,99 Polyethylsilox - new fluid 5.27-7.31 Diisooctyladi- pinat 0.60-0.83 Lecithin 0.25-0.26 Filler Rest