REDUCING THE AGGREGATIVE STABILITY OF EMULSION STYRENE BUTADIENE RUBBER WITH THE USE OF AROMATIC AMINES

Abstract

In this paper, for the first time, a study was conducted on the use of various types of aro-matic amines in the production of emulsion rubbers to reduce the aggregative stability of latex dispersions. The use of aromatic hydrocarbons containing amine groupsin the technology of sep-aration of rubber from latex makes it possible to obtain emulsion rubbers at low costs of the coag-ulating agent. It was found that the temperature regime of the coagulation process of the latex system has a significant effect on the consumption of aromatic amines used: the lowest consump-tion was noted when using them to reduce the aggregate stability of latex systems at temperatures not exceeding 20 °C. The consumption of the acidifying agent -15 kg/t of rubber. Low amounts of coagulating agent create good prerequisites for the implementation of a closed technological cycle on an industrial scale, reducing water consumption by rubber extraction workshops from latex, which ultimately increases the environmental friendliness of the entire technological process of their production. The analysis of rubbers as well as the physical and mechanical characteristics of vulcanizates prepared on their basis, showed that the main properties of rubber-technical products, from control and experimental samplescomply with the regulatory requirements of GOST and TU.