SU937480A1 - Rubber stock based on carbochain rubber - Google Patents

Description

(5) RUBBER MIXTURE ON THE BASIS OF CARBOTZEP RUBBER

one

This invention relates to a rubber chain based rubber compound, in particular to the modification of rubber to improve the strength of its connection with fibrous materials and can be used in the rubber industry.

A known rubber mixture based on chain-chain rubber (butadiene-nitrile, styrene-butadiene), including as a mineral filler, betonite in an amount of + 8.2-48.55 parts by weight. per 100 weight parts rubber tl.

However, this mixture is used for oil-resistant and alkali-resistant rubbers and it has a low bond strength of rubbers from it with viscose and polyamide cores.

Also known is a rubber mixture based on chain-chain rubber, including resotropin and mineral carbon, filler - white carbon / BS-120 / t23.

This mixture has good physicomechanical indicators of rubber from it, however, the strength of the bond of rubber from this mixture with viscose and polyamide cords is not sufficiently high.

The purpose of the invention is to increase the bond strength of rubber with viscose and polyamide cords.

ten

This goal is achieved by the fact that a rubber mixture based on chain-chain rubber, including resotropin and mineral filler, as the mineral filler contains a filler of the composition., Wt.%: 60; Ali03 lt-16; Reors2-C; FeO 0.5-1.5; Tio “0, 6; CaO f, 0-2.0; MgO PaOj. 0.2-0;

20 S 0.15-0.24 1.5-2.0; NaoO 2.03, 0; SPT 8.0-10.0 in the following ratio of components, wt. M: Carbon chain rubber Rezotropin Mineral filler3 10 The specified filler bentonite is a gray powder, dried at and screened with a sieve of ff 0.05 with a specific weight of 2, 1-2.6 g / cm pH 6o. Rubber mixtures are prepared on a roller. The expanded vulcanization is carried out in a press at 153 ° C at the optimum time. Resotropin (RU)% VRD t. Usually at the end of the blend, bentonite is in the middle of the blending process, when coagulation of the RU and bentonite are combined, the mixture of these components is introduced in the middle of the blending process. 3.0 5.0 Bentonite 04 The bond strength of rubbers with textile fabrics [22], 17L, ZBuHtc / p-ioi is determined by the H method at. Examples 1-10. The composition of the rubber compound based on SKI-3 rubber is presented in Table 1. The bond strength of rubber with cord is presented in Table. 2: Examples 11-20. The composition of the rubber mixture based on SKI-3 and SKD rubbers is given in Table 3. The bond strength of rubbers with cords is presented in Table. . As in Tables 1 and 2, the bond strength of rubbers with viscose and polyamide cords based on the proposed rubber mixture at an optimal content of the RU modifier and bentonite is higher than the known: with viscose by 30%, with polyamide by 37. Table 1 10 , 0 3.0 5.0 10.0 3.0 5.0 10.0 M-Neutrozodiphenylamine0, 5 Zinc oxide5 Stearin, technical2 Inden-coumarone resin7 V. . Antioxidant 4010NA, 1 Oil PN-63 Neozon D1 Soot PM-5030 Soot PM-10010 Alrafor2,8 Soot BS-12010 Resotropin2 Bentonite

table 2

Claims (2)

Table 3 Claims of the Invention Rubber mixture based on chain-chain rubber, including resotropin and mineral filler, 4TOj in order to increase the bond strength of rubber from this mixture with viscose and polyamide cords, as a mineral filler, it contains a filler composition, weight: SlOg 58.6; T, 0-16.0; Redrzg-; FeO 0.5-1.5; TiO, l O, -0.6 CaO 1.0-2.0; MDO 2-k; , S 0.15-0.2; Ktsr 1.5-2.0; Na “iO 2-3; SPT 8-10 with the following ratio of co-components, parts by weight: Ezotropin carbon chain rubber Mineral filler Sources of information taken into account during the examination 1. G. Martiros G. and others. Bentot in the production of acid-alkali-resistant and oil-resistant rubber products. - Industry of Armenia, 1980, N 7, p. 28-30. 2. USSR author's certificate number 25857, cl. C 08 L 9/00, E6C (prototype).