Open AccessTHE INFLUENCE OF POWDER SHUNGYTES ON PROPERTIES OF OIL-AND BENZO RESISTANT RUBBERS
Author(s) -
Nikolay F. Ushmarin,
Egor G. Efimovskii,
Ni. Petrova,
Sergey I. Sandalov,
Н. И. Кольцов
Publication year - 2018
Publication title -
izvestiâ vysših učebnyh zavedenij. himiâ i himičeskaâ tehnologiâ/izvestiâ vysših učebnyh zavedenij. seriâ himiâ i himičeskaâ tehnologiâ
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.221
H-Index - 5
eISSN - 2500-3070
pISSN - 0579-2991
DOI - 10.6060/ivkkt.20196201.5760
Subject(s) - vulcanization , natural rubber , neoprene , ultimate tensile strength , materials science , composite material , mooney viscosity , nitrile rubber , elongation , polymer , copolymer
In the article two rubber mixtures are studied: rubber 7NO-68-1SK based on a combination of butadiene-nitrile caoutchouc BNKS-18AMN with chloroprene caoutchouc neoprene W and rubber 81-453 based on a combination of butadiene-nitrile caoutchouc BNKS-40AMN, butadiene caoutchouc SKD, butadiene-methylstyrene caoutchouc SKMS-30 ARK and sevilene 11808-340. The purpose of the study was to improve the physical-mechanical and operational properties of both rubber mixtures by using fine powdered schungites Taurit TS-D, Psh-5 and PSH-20 in their composition. To assess the kinetics of vulcanization of rubber mixtures, the following were determined: the minimum and maximum torques; start time, optimum time, time achieving maximum vulcanization rate and maximum of vulcanization rate. To assess the physical-mechanical properties, we determined: the conditional tensile strength; elongation at break; hardness and relative residual deformation after compression. To evaluate the performance properties of rubbers, the following was determined: the change in the relative tensile strength; change in elongation at break and change in mass after aging of vulcanizates in a standard liquid SZHR-1, isooctane + toluene mixture, as well as in gasoline and industrial oil I-20A. It is shown that for the rubber mixture 7-NO-68-1SK a partial replacement of carbon blacks P 803 on the schungite PSH-5 in an amount of 15 parts by weight leads to an improvement in the rheometric parameters, physico-mechanical and operational properties of vulcanizates. For the rubber mixture 81-453, partial replacement of the persil 175 on shungite PSH-5 also allows improving the rheometric properties and increasing the physico-mechanical and operational parameters.