ผลขององค์ประกอบและภาวะการเตรียมต่อสมบัติของยางรีเคลมจากเศษยางเหลือใช้ / พนอ วรรณวงศ์ = Effect of composition and preparation condition on properties of reclaim from rubber waste / Panor Wannawong
This research was to study the possibility of recycle waste tire via reclaiming process: modified thermochemical method. The studied parameters were the quantity of reclaiming agent: ULTRA-PEP 96 in the range of 0.5-3 phr and thermal treatment conditions: temperature at 110 and 140 ํC and heating duration at 2 and 4 hours. The parameters effect on mechanical properties and cure characteristics of Virgin NR/reclaimed rubber blending were investigated. The results showed that the incorporated reclaimed rubber in the rubber product had no effect on the scorch time and cure time of rubber product. It was found that the Ground Tire Rubber (GTR) treated with this reclaiming process gave the better mechanical properties. The effect of thermal treatment conditions showed the same trend for all quantities of reclaiming agent. At heating temperature of 110 ํC, the tensile strength of Virgin NR/reclaimed rubber product was still low same as non-thermal treatment or untreated GTR. When temperature increased to 140 ํC, the tensile strength of product increased. The % Elongaion was improved in every reclaiming conditions. The condition indicated the highest value of tensile strength was 0.5 phr of reclaiming agent and heating at 140 ํC for 4 hours. The tensile strength of Virgin NR/reclaimed rubber product and Virgin NR/RTR (commercial) product was comparable to 5-10% weight of reclaimed rubber loading. But it will be decreased with increasing of loading. The rubber product containing higher reclaimed rubber loading had a good resistance of thermal aging