SU1063813A1 - Rubber mixture on the basis of ethylene-propylene rubber - Google Patents

Abstract

RUBBER MIXTURE ON THE BASIS OF ETHYLENE-PROPYLENE RUBBER, including uHHKateiiOi-b-iso-tert-butylperoxyisopropylbenol oxide, technical carbon, polycrylnitrile and the methacrylic acid derivative, in the case, by the way, in the case, by the way, in the case, by means of the unit, in the case of the power source), in the case of the system, the blackboard and the methacrylic acid, polyacrylonitrile and the methacrylic acid, are in the same way, by the way, in the case, by the way, in the case, the target will be in the box, in the order of the 70 ° C, the mixture contains 1,3-bis- (methacrylphenyl) propane as a derivative of methacrylic acid in the following ratio of components, m.h: Ethylene-propylene rubber 100 Zinc oxide 3-10 "F - Sue - tert - (butyl peroxide propyl benzene 5-10 (L pecifications 30-70 carbon Poliakrilonitril3-20 l-3-St / c- (metakrilfenil) propan22-35 S

Description

05 00 00

s

The invention relates to rubber production technology, and specifically to rubber mixtures based on ethylene-propylene rubber, and can be used in rubber production enterprises. In modern conditions, rubber mixtures are required, which make it possible to obtain rubber with high heat resistance and resistance to the effects of various corrosive media. A known rubber mixture based on ethylene-propylene rubber, including zinc oxide, peroximone (aiiCh-bis-tert- (butyl peroxy-isopropylbenzene), technical carbon and oligoether acrylates l, Vulcanizers from this mixture are characterized by high strength properties, but they have, they have, and they have yne. Closest to the one proposed is a rubber mixture based on ethylene-propylene rubber, including zinc oxide, peroximone, carbon black, oligoester methacrylate, and polyacrylonitrile 2. Vulcanizates are listed. The mixtures are characterized by good heat and oil resistance, however they have not satisfactory resistance to acids at 70 C. The purpose of the invention is to improve the resistance of rubbers to hydrochloric acid at 70 C. The goal is that those based on rubber ethyl propylene rubber, including zinc oxide, .and, Bt-C-tert - {butyl sidisopropnylbenzene, technical carbon, polyacrylonitrile and a derivative of methacrylic acid, contains as the last 1, 3-S (c (methacrylphenyl) propane with the following relative AI components mae.ch .: Etilonpropilenovy rubber SO. Zinc oxide ot, 06 bis-7 re t - (butyl peroxyisopropyl benzene 5-10 technical carbon Polyacrylamide, 1,3-buc- (methacrylphenyl) propane 22-35 1,3-5x- (methacrylphenyl) propane) is obtained according to a known method by methacrylation -1 Z-b-is - (hydroxyphenyl) -propane Z. The rubber mixtures, the composition of which is shown in Table 1, are made on rollers, vulcanized in electric pressure at i60 ° C for 40 minutes. The tests are carried out according to standard methods. 2 given the resistance of rubbers to the effects of hydrochloric acid at different concentrations, in Table 3 - at different values temperature. As follows from the data of Tables 2 and 3, rubber from the proposed rubber mixture is characterized by greater resistance to the effects of dilute and concentrated hydrochloric acid at 70 ° C compared to rubber from known mixtures. It should be noted that rubber from the proposed mixture has selective resistance to acids and are resistant to contact with hydrochloric acid, while other inorganic (nitric) or organic (acetic) acids of the same effect on the stability of known and proposed x rubber to their effects. Table 1

SKEP

Zinc oxide

Peroximon

Carbon black

PM-50

100100 100100100100100100

3333 35-5 10

5555557.5 10

5050 50 50 30 5050 70

The content of components, parts by weight, according to examples

Components,"

Baseline PrototypeOffer Mix

objectI

IIIIZ Ij Z nL lL ll LlEI,

Polyacrylonitrile 20203 10 20 3 20 10 20

oh CO-Dimethacrylate triethylene

glycol (TM-3) 10-10

o, U-Dimethacrylate- (bis-triethylene glycol) -phthalate (MGF-E) -10 -, 3-bts- (Methacrylphenyl) propane - - - 22 30 35 22 30 30:30 35; Example Aging at 10 ° C in a 10 day C in a salt bath HC1 Concentration,% Swelling,%

120430,300,24 15 30 0,42ОУЗО И, 4 20 0,480,35

2. 20470,270.23

15

11.4 20

15

11.4 20

15

11.4

20 .

15

11.4

20

15

11.4

,, “FURNESS OF TABLE OF one

table 2

Aging factor

strength relative elongation

0.28

0.38

0.49

0.30 0.26 0.23

0.27

0.39

0.43

0.32 0.38 0.30

0.43

0.37

0.58 0.38

0.40 0, 34

0.44 0.37

0.59 0, ЗЬ

0.41

0.35

0.4 0.39

0.61 0.39

Claims (1)

RUBBER MIXTURE BASED ON ETHYLENE PROPYLENE RUBBER, including zinc oxide _m ::, o--S-uc-butyl peroxydisopropylbenzene, carbon black, polyacrylonitrile and a methacrylic acid derivative, in order to improve the quality of rubbers from it to the effect of hydrochloric acid at 70 ° C, the mixture contains 1,3-bis- (methacrylphenyl) propane as a derivative of methacrylic acid in the following ratio, wt.h: Ethylene propylene rubber Zinc oxide "," - 8is - tert - (butyl peroxydisopropylbenzene