SU1419995A1 - Rubber compound for under-rail pads - Google Patents

Abstract

The invention relates to the industrial use of rubber products, in particular, to the development of a vulcanizable rubber compounding for processing into railroad rail pads. The invention allows to increase the strength of vulcanizates from 7.9 to 13.3 MPa, tear resistance from 35 to 56 kN / m, hardness from 63 to 78 used units. and increase the service life of the npoKJta-dock to 700 min. tons (gross weight of the cargo) through the use of a rubber compound in the formulation, in weight, including: styrene butadiene rubber 75.0; isoprene rubber 25.0; sulfur 1.2-2.0; zinc oxide 3.8-4.5; kaolin 38.0-42.0; carbon black 58.0- 62.0; M-cyclohexyl-2-benzthiazolylsulfenamide 1,4-1,6; K, N-diphenyl-guanidine 0.5-0.7; synthetic fatty acid fraction, 2.2-2.8; rubber crumb with a particle size up to 1 mm 10.0-15.0; rosin 2.8-3.2; petroleum bitumen 4.5-5.5; wax 1.8-2.2; phenyl-p-naphthylamine 0.8-1.2; f-fenchI- -N-isopropyl-p-phenylenediamine 0.8-1.2; a mixture of hexachloroparaxylene with paraffin hydrocarbon in a mass fcooT-wearing 80:20 0.8-1.2; N-nitrosodiphenylamine 0.4-0.6, table 2. with (L

Description

with so

coke

The invention relates to the industrial use of rubber products, in particular, to the development of a formulation for a vulcanizable rubber mixture for processing into rail pads for railway transport.

The purpose of the invention is to increase the physiological mechanical indicators and resource.

health of the rail pro; masonry.

: Formulation of rubber compounds and your | Steva vulcanizates are presented in

| Table. 1 and 2,

I Sample curing

| at 151 ° C for 30 minutes,

Claims (1)

i Formula of invention  The rubbers and the composition for under-rail pads based on a mixture of isoprene and styrene-butadiene; chuks, including sulfur, zinc oxide, I kaolin and carbon black, about t - in order that, in order to improve the physicomechanical indicators and the service life of the rail pads, the composition additionally contains N-cyclohexyl-2-benzthiase Olylsulfenamide, K, S-diphenylguanidine, synthetic fatty acid fraction, Yu P; New crumb with a particle size up to 1 mm, rosin, petroleum bitumen, wax. 99952 phenyl-naphthylamine, N-eHHJi-N-isopropyl-p-phenylenediamine, a mixture of hexachloroparaxylene with a paraffinic hydrocarbon in a mass ratio of 80:20 and N-nitrosodiphenylamine in the following ratio of components: Styrene butadiene rubber75,0 Isoprene rubber 25.0 Sulfur 1,2-2,0 Zinc Oxide3,8-4,5 L-Cyclohexyl-2-benzthiazolylsulfenamide 1,4-1,6 N, N -Difa NILguanidine. 0.5-0.7 Synthetic fatty acids of C-Cjij fraction 2.2-2.8 Kaolin 38.0-42.0 Technical carbon 58.0-62.0 Rubber crumb with a particle size of up to 1 mm10.0-15.0 Rosin2,8-3,2 Oil bitumen 4.5-5.5 Vosk1,8-2,2 Phenyl-p-naphthylamine 0.8-1.2 N-Phenyl-s-isopropyl-p-phenylenediamine 0.8-1.2 Mixture of hexachloro-xylene with paraffin hydrocarbon in a weight ratio of 80:20 to 0.8-1.2 N-Nitrosodiphenylamine O, 4-0,6 Rubber butadiene styrene SKS-30 ARKM-15 Isoprene rubber SKIRegenerate RS  Crumb rubber coat to 1 mmSera Diphenylguanidine2-Mercaptobenzthiazole Table 1 75.075.0 25.025.0 10,015,0 2,01,2 0,50,7 zolyl sulfenamide; Thiuram D - tetramethylturam disulfide; Hexol SV - 80% hexachloroparaxylene and 20% wax pollutants (paraffin hydrocarbon); Diafen OP - K-phenyl-S-isopropyl-p-phenyldiamine; Naphtham-2-fensh1- 8-naphthylamine. 1419995 Continuation of table 1 14199956 table 2 7.9 12.5 12.0. 13.3 270 250 280 63 64 75 78 97 102 35 37 49 -37 -45 -45 -14 -25 28 32 4.5 1.4 1.8 350 700 700 360 77 110 56 -45 -18 36 2.3 700 280 78 102 49 -45 360 77 110 56 -45 -14 -25 -18 28 32 36 2.3 700