SU952911A1 - Rubber stock based on chlorosulfonated polyethylene - Google Patents

Description

The invention relates to rubber mixtures based on chlorosulfonated polyethylene (HSPE), products from which are characterized by shorter vulcanization time while maintaining a high level of physical and mechanical properties and degree of structuring, and can be widely used in the manufacture of rubber products for various purposes.

A known rubber mixture based on CSPA, comprising metal oxides l as a vulcanizing agent.

However, the resulting rubber has a low chemical resistance.

Closest to the proposed technical essence and the achieved effect is a rubber mixture based on CSPA, including cadmium sulfide, an organic accelerator and carbon black - gas channel black DG-100 2.

However, the optimum duration of vulcanization of such a mixture is quite large 60 minutes at 153 ° C.

The purpose of the invention is to accelerate the cure of the mixture.

The goal is achieved by the fact that the mixture is based on

TGSPE, including cadmium sulfide, organic accelerator and gas channel soot, additionally contains spent CaA zeolite, comprising 2-3 wt.% Of hydrogen sulfide, in the following ratio of components, wt.h .:

Chlorosulfonated poly10 ethylene100 Sulfide

cadmium 4-16

Gazovaya kanalna soot9-21

15 Organic

accelerator2-3,5

Spent zeolite CaA, including

20

2-3 wt.% Hydrogen sulfide4-16

The treated granulated zeolite is a chemical, petroleum, petrochemical and other waste.

25 industries that use zeolites as highly effective adsorbents for the purification of natural, associated, petroleum and industrial (technological and waste)

30 gases from hydrogen sulfide. Zeolite is granulated without a binder or with a binder - coal or cement (up to 1% by weight of zeolite) - and is an aluminosilicate polyhydrate of the formula (Sar A120 C 2SlOgX 4.5 HjO with the composition of the elemental cell Cag (AlOj) n () -27 As vulcanization accelerators, for example, mixture of mercaptobenzthiazole (MBT) or tetramethylthiuram disulfide (TMTD) with diphenylguanidine (DFG) can be used .. Example: Preparing rubber mixtures of the composition specified in Table 1 The rubber properties in the vulcanization optimum are given in Table 2. From Table 1 it follows that instead of Zves.h. MW can be used It can be seen from the data given in Table 2 that the introduction of spent zeolite containing hydrogen sulphide into the known mixture 1 does not impair the properties of rubber and makes it possible to significantly shorten the vulcanization of these mixtures (mixtures 2-4), which makes it possible to increase the productivity of the vulcanization equipment for the release of rubber from these mixtures. Thus, the introduction of 4 wt.h. specified zeolite, mixture 1 reduces the optimal curing time from 60 to 50 minutes (Table 2, the proposed rubber 2), and 10-16 wt.h. zeolite at 100 mph. kcn3 reduces the optimal duration of its vulcanization to 40 minutes (Table 2, rubber 3 and 4, respectively). The optimal dosage of spent zeolite 10 mach. on 100 ma.ch. rubber T a b l and c a 1

100.0 100.0 HSPE.100.0 Cadmium sulfide 10.0 10.0 10.0 MW3.0 3.0 3.0 DFG0.5 0.5 0.5 Exhaust 4.0 10.0 zeolite Technical carbon 15, about 15.0 DG-10015.0

 Vulcanization time at, min 60 50 40 Strength at stretching, MPa13.0 13.7 13.5

Stress at 100% elongation, MPa3.7 3.7 3.7

table 2

Rubber

30-10

40 20 20

3.7 3.0 3.8 2.5 5.1 100.0100100100100 10.04161010 3.033.33 0.50.50.50.50.16 16.0101010 .10 15.015.015.095.0.0.0 13.0 13.513.7 13.0 14.3

Claims (2)

1.Blokh G.A. Organic rubber vulcanization accelerators. L., Himi, 1971, p. 210. 2.NOSNIKOV A.F. et al. The effect of metal sulphides on the structuring of CSPA and the properties of its vulcanizates. - Lime universities. Chemistry and chemical technology. 1975, t .18, with. 1279-1282 (prototype).