SU726128A1 - Dienic rubber based vulcanized rubber mixture - Google Patents

Description

The invention relates to the rubber industry, in particular to the development of a vulcanizable rubber compound based on diene rubber. Known for vulcanizable rubber rubber mixture based on dieno-rubber, including the stabilizer N, N-diisopropyl-oxymethylbenzidine l. The rubber from this mixture does not have sufficient physical and mechanical properties and resistance to heat aging. I The purpose of the invention is to improve the durability of rubber from vulcanizable rubber mixture based on cienogram rubber for heat aging with simultaneous improvement of their physical and mechanical properties. Delivered, it is achieved by the fact that, as a stabilizer, the mixture contains about (- Damantil-1-Vithylamine- (N-B) - 1-boradamantane in the amount of 1–4 wt.%, H, and 1OO mass. Of rubber, which is a white substance without zapak, stable when stored, non-toxic.The proposed stabilizer is introduced into the formulation according to the existing modes of displacement. To compare the inhibitor deist; VIA of the proposed product is prepared mixtures containing used stabilizers (antioxidants) (Table. 1 and 2). The mixtures are made on rollers and vulcanized in a press at 143 C 6O minutes Aging is carried out at 100 C for S4 hours.Example Tables 1 and 2 show the compositions of mixtures iia based on various diene rubbers.

Table 1

CKMC-3d ARKM-15 (butadiene-uti {eolian

loo.d 100.0 100.0

table 2

100.0

YuO.O.

Antioxidant 4010 / NA

Diisopropypoxymethylbenzidine

(A. .damantyl-1-ethylamine- () -1- oradamantane

Properties of rubber from known and pred. Forest mixtures are presented in Table. 3

Blend number

Indicators before aging

Continued table. 2

20

, T а .6 Л И ц-а 3

Indicators after From table. 3, it can be seen that all the proposed mixtures have an increased resistance to thermal Startento (aging coefficient 1.2–1.4 more than the known ones), and the modules of the proposed mixtures with elongation of ZOO% and elongation at break are higher than the known ones , 1.4-3 times. In tab. 4 shows the coefficient of aging of the proposed rubber syoses based on CICMC-30 ARKM-15 with varying amounts of the introduced stabilizing additive of C-adamantyl-1 -tetilamine- (H -B) -1- € oradamantine in the amount of O, 5-4.75 wt. h on 1OO mass rubber Table 8 8 Continuation of the gab .. 4 As can be seen from the table. 4, the most optimal is the introduction of a stabilizing addition of diL-adamantyl-1-ethylamine- ((V-B) -1-boradamantane in the amount of 1.0-4.0 ass. Per 100 mass parts of rubber. Rubber from the proposed mixture characterized by previous (compared to known) heat aging resistance and physicomechanical indicators., claims Vulcanizable rubber mixture based on diene rubber, including a stabilizer, characterized in that, in order to improve the durability of rubber from this mixture to heat aging while improving their physical furs indicators, the mixture contains, as a stabilizer, oC-adamantyl-1-vtil9Min - (N-B) -1-boradamantane in an amount of 1-4 mass parts per 1OO mass 4H of a rubber.Insources of information taken into account examination 1. USSR author's certificate N 235986, class C 08 L 9 / OO, 1969 (prototype).

Claims (1)

SUMMARY OF THE INVENTION A vulcanizable rubber compound based on diene rubber, comprising a stabilizer, different. the fact that in order to improve the heat resistance of the rubbers from this mixture to thermal aging while improving their physical and mechanical properties, the mixture contains X — adamantyl — 1-ethylamine - (N — B) —1— —boradamantane as a stabilizer in an amount of 1 —4 mass parts on 1OO mass of ₄ parts of rubber.