Study of the properties of the polymer compositions using the modified latex coagulum
Properties of the latex coagulum formed during the manufacture of styrene-butadiene latices were investigated. Processing conditions coagulum for further use in the composition of the polymer base composites and rubber compounds were grown. Plasticizers latex coagulum system, improving its handling on the process equipment were developed. In the process of changing the structure of the plasticization of the polymer matrix: solid areas appear in images taken with a scanning probe microscope. Ability to manufacture polymer composites based on treated latex coagulum was shown. When creating the polymeric compositions of styrene-butadiene rubber SCS-30-15 ARKM plasticized coagulum optimum ratio of 70:30 has been selected. Influence the type and dosage of plasticizer viscosity compositions latex coagulum with rubber SKS-30-15 ARKM been established. Application consisting of plasticized polymer base coagulum provides physic-mechanical properties of rubber at the control rules of molded rubber products. It is noted that the best combination of properties of rubber and rubber blends possess samples based polymer compositions coagulum plasticized combination of petroleum oils. It has been established that the use of latex coagulum in the polymer base composition causes sufficiently high values of Mooney viscosity and short curing starts. The influence of active chemical additives (derivatives of saturated fatty acids, 2,2-azo-bis-isobutyronitrile) to change the properties of the latex coagulum during machining on a mill was studied. Two ways of handling coagulum in the presence of accelerators mastication was proposed. Found that mixing coagulum accelerators advisable to carry out before the stage of the plasticizing coagulum.