THE USE OF DESTRUCTED WASTE CARDBOARD FOR INCREASING OF ADHESION STRENGTH AND THERMO OXIDATIVE STABILITY OF VULCANIZED RUBBERS BASED ON (ALPHA-METHYL)-STYRENE BUTADIENE RUBBER SKMS-30 ARKM-15

Abstract

The effect of short-fiber destructed material, obtained from waste cardboard (SFD) using the solution of titanium tetrachloride in hexane (TiCl₄-C₆H₁₄) of various concentrations (C) of Ti (IV) (30 and 100 mg/g) on vulcanization characteristics, physical and mechanical, adhesive (A) properties and thermo oxidative stability (TOS) of vulcanized rubbers based on SBR SKMS-30 ARKM-15. SFD is the lignocellulose powder of long particles with the average particle length of up to 0,23 mm and the average particle width of up to 31,2 µm. Rubber compounds filled with carbon black were obtained by plasticorder Brabender «Plasti - Corder® Lab-Station», vulcanization kinetics studied by rheometer Monsanto 100 S at 151 °С. A to metal cord 4L15 was measured by tensile testing machine RMSh-5, cross-link density ν_c was calculated using the data on equilibrium swelling, physical and mechanical properties were measured according GOSTs. The results obtained are under comparison with that for control samples. It was found that the introduction of SFD results in the reduce of ν_c however in an amount up to 5,0 phr had no significant effect on the kinetics of vulcanization of rubber compounds; A increased especially at C = 30 mg/g. TOS assessed after holding in a thermostat at 100 °C for 72 hours also increased because of the presents in the structure of SFD some hindered phenol fragments known as effective antioxidants.