SU1024468A1 - Vulcanizable rubber stock based on diene rubber - Google Patents

Abstract

VULCANIZABLE RUBBER MIXTURE ON THE BASIS OF DIENA RUBBER, including a sulfur vulcanization accelerator, an amino ketone oxime, characterized in that, in order to reduce the vulcanization time and improve the physicomechanical properties of rubber from this mixture, it is a simple way to create a Venturizer, as an ascendor. (B-cyclohexylaminopropiophenone of the formula H CeHg-C-Clfz-SbHD in the amount of 1-3.4 parts per hour per 100 parts per hour of diene rubber.

Description

1h2 4 The invention relates to rubber industry, namely to rubber, used in the tire and rubber industry. A well-known rubber mixture based on diene rubber includes, as a vulcanization accelerator, p-cyclohexylaminopro-pyophenone hydrochloride, stearic acid, zinc oxide, and sulfur, for example, in a ratio of 100: 1: 0.5t5: 3 fl. However, this mixture does not provide the necessary vulcanization time as well as the physicomechanical properties of rubber. . The closest technical solution to the invention is {volyanizable) rubber mixture based on diene rubber, including a sulfur vulcanization accelerator - 4 minketon oxime, in particular B-ztilaminopropiophenone oxime, in an amount of, for example, 0.8 mph. on May 100, h, diene rubber. : In addition, a mixture of stearic acid, zinc oxide, dibenzthiazole sulfide and sulfur is known. For example, in quantity, mac.h.s 0.5; five; 0.6, 1 2. However, rubber is known. The mixture has a low rate of vulcanization, and the rubber obtained from it has low physical and mechanical properties. The aim of the invention is to reduce the vulcanization time and increase the physicomechanical properties of rubber from this mixture. The goal is achieved by the fact that a rubber mixture based on a diene rubber, including a sulfur vulcanization accelerator, an amino ketone oxime, contains oxime as a sulfur vulcanization accelerator.

The content of components in the rubber

The components of the mixture h, mac. & cyclohexylaminopropiophenone formula. non I CeHs-c-CHa-CBg in an amount of 1-3.4 wt.h. per 100 masts. dirnovogo rubber. Clause 1, Rubber compounds are prepared using conventional equipment for the processing of rubber mixtures on rollers according to the following mode: m, designed for processing the corresponding rubbers. In the pre-plasticized rubber, 0.5 mch . stearic acid, 5.0 wt .. h. Copy, 0.7 May, h oxime and 3,. h, sulfur, ezenzy mixture is vulcanized in the press at .143 ° C. Physical and mechanical properties of rubber are determined in accordance with GOST 270-75. Examples 2-8 are prepared analogously to Example 1. V -, .-,: -. . In tabLv presented; The composition of the rubber mixture in the table. 2-properties of rubber mixtures and volcanic rocks; In table. 3 shows the composition of rubber mixtures based on SKI-3, B- table. 4 - vulcanization conditions and properties of vulcanizates. From the comparison 1 of the properties of a known rubber mixture and the proposed one, that the time to achieve optimum vulcanization using the R-cyclohexylaminopropiophenone oxime is reduced by 20-30%, and the physical and mechanical properties of the vulcanizates; Grows by 20–30%, for example, tensile strength rises by 30% and the stress at 300% elongation. 25%. : Tab. faces1.

NK (smoked-shits) Stearic acid Zinc oxide

Oke-ethylamino, 8 propiophenone

100

100 0.5 0.5 5.0 5.0

Oxim (b-cyclohexylaminopropiof Duration of scorching according to Mooney, OS 5

Time to reach optimum vulcanization, min 60

Conditional voltage at 500% elongation, MPa. ; 3.4

Strength at stretching, MPa

Relative elongation,% Residual elongation,%

Tear resistance,

kN / m28

Continuation of table 1

40

70

5.8

5.0

3.0

43

40

32

Oxime p-ethylamino2, 0 propiophenone

Oxime 0, -cyclohexyl aminopropiophenone

DibenzothiazolyldisulContinuation

3.4

2.5

1.7

Claims (1)

(5.4) VULCANIZABLE RUBBER MIXTURE BASED ON DIENE RUBBER, including sulfuric vulcanization accelerator - aminoketone oxime, characterized in that, in order to reduce vulcanization time and increase the physicomechanical properties of rubbers from this mixture, the latter contains sulfuric vulcanization accelerator β-cyclohexylaminopropiophenone of the formula