SU1445160A1 - Polymer composition of friction purposes - Google Patents

Description

(46) 09/23/92. Bul No. 35

(21) 4006873/05

(22) 12/09/85

(72) E.V. Shumakov, P.A. Kraynov.a,

V.A, Mozhaev, M.Z, Levit,

G.P. Kasatkin, M.M., Mednikov,

D.Y., Volotovsky, I.S. Burtseva,

K.I. Basilska and L, A. Yakovleva

(53) 678.04 (088.8)

(56) USSR Author's Certificate No. 802315, cl. C 08 L 9/02, 1978.

USSR author's certificate №, cl. C 08 L 9/02, 1981.

Technical regulations TP (67-AO-80 Pa non-molded stuffed rubber products.

(54) POLYMERIC COMPOSITION OF FRIKTING him APPOINTMENTS

(57) The invention relates to friction materials, in particular, to a friction polymer composition for cycling shoes. The invention allows to increase the wear resistance and friction coefficient of rubber from this composition due to the fact that it contains butadiene-nitrile rubber as a rubber with 36-40% by weight of acrylonitrile units (BNK) as a plasticizer rosin (K), mazut (M ), natural rubber compound (PIK) and additionally carbon black with a specific surface of 100-110 m / g and adsorption of dibutyl phthalate 75-85 ml / 100 g, modified with p-phenylendeamine and nitric acid potassium (TUM), as well as tetramethylthiuramdysulfide (SHDS) or 2,2-dibenzthiazole-di sulfide (T). The composition of the invention contains, in wt%: BNK 100; sulfur 1.4-1.6; TMTDS or T 0.2-0.5; 2-mercaptobenzthiazole 0.2-0.5; zinc white 2-4; K 1-2; M 3-5; PIC 4.2-5.4; phenyl- 3 naphthylamine 1-2; carbon black with a specific surface 13-19 10-12; TUM 20-28. 3 tab.

S9

one

The invention relates to friction clutch No. 1, aterlam, in particular, to the polymer polymer composition of a frictional charge, and designed to work in flared brakes of road cycling,

The purpose of the invention is to improve wear resistance and reduce friction coefficient,

Carbon black with a specific surface of 100-110 and the adsorption of dibutyl phthalate J equal to 75-85 ml / 100 g, modified n

Feiyylenediamine in the amount of

About 5.35 to 1 and az from no-acid ka

In the amount from Ojl to 0.2 wt., produced by domestic gfomipenostoy on TU 38 AISIOA-Sii.

The compositions are made in the usual way by rolls, and the brake pads are made by injection molding.

Laboratory evaluation of wear resistance is performed on an instrument of the type MI-2 according to GOST 426-77,

The evaluation of the wear resistance as well as the brake performance of the pads in real life operation is carried out in the tick brake of the Breeze road bike.

Condition} 1 test on the device type according to GOST 426-77 estimated slip speed Os, 30ji; 0.05 m / s, normal force on 2 samples) 26 N (2.6 kgf).

-

Test conditions in the tick torus

road bike speed 111 - 531 speed of the bicycle before braking starts at 15 km / h; hand brake force IbjJ kgf $ test weight 70 kg.

The invention illustrates the examples given in table. one.

In tab. 2 and 3 shows the data on the properties of rubber by the proposed and known methods,

Claims (1)

Invention Formula Poly {friction composition for bicycle pads, 50 4451 . ten 15 20 % 25 35 about 50 602 including rubber, sulfur, mercaptobenzthiazole, zinc white, plasticizer, phenyl -1 -1 naphthylamine, carbon black with a specific surface of 13-19m2 / g, characterized by the fact that in order to improve wear resistance and coefficient of rubber rubbing from this composition, it contains as rubber butadiene-nitrile rubber with -36–40 wt.% acrylonitrile units, as a plasticizer rosin, fuel oil and natural rubber, and additionally carbon black with a specific surface of 100–110 and dibutyl phthalate adsorption 75 - 85 ml / 100 g, mod fitsirovannp p- phenylenediamine and nitric acid tga- Liem and tetrametiltiuramdi- sulfide or 2,2 -dibenztiazoldisul- feed at the following component ratio, wt.%: Nitrile butadiene rubber with 36-40% by weight of acrylonitrile47-49 links Sulfur1,4-1,6 Tetramethylthiuram-disulfide or 2,2-dibeistiazol-disulfide, 5 2-Mercaptobenzthiazole 0.2-0.5 Zinc white2-4 Rosin1-2 Mazut3-5 Natural rubber plastic rubber 4,2-5,4 Feiil p-naphthyl-min1-2 Technical carbon with a specific surface of 13-19 m2 / g 10-12 Technical carbon with a specific surface of 100-110 and adsorption of dibutyl phthalate 75- 85 sp / 100 g, modified p-feiilevdia with a screw and potassium nitric acid 2U-28 U45160 Table 3 The test results of the known and proposed compositions in the glue brake of the road bike ltt-531 BREEZE Average wear of 9 mm (when tested on a bicycle for 100 km of run in real-life conditions on asphalt-covered roads) Braking distance, m, when tested on a bicycle in conditions of bi; dry weather doses of weather 1.4 0.174 4.0 15.0