การพัฒนาสมบัติของยางธรรมชาติและเทอร์โมพลาสติกพอลิยูรีเทนโดยใช้เทคนิคการเบลนด์

Abstract

The aim of this research is for developing natural rubber and thermoplastic polyurethane by blending technique of the materials to improve performance. In the case of improving the performance of natural rubber, thermoplastic polyurethane was used as the material to enhance the properties. From the result, the developed materials are still processed by conventional rubber methods, with outstanding properties of abrasion resistance. On the other hand, when the thermoplastic polyurethane was improved, natural rubber was used to improve the properties. The result is that the developed materials are still hold the thermoplastics properties which has outstanding properties of increased friction and reduced tension set. The Study have shown that optimal conditions for mixing natural rubber and thermoplastic polyurethane were temperature at 150 °C 15 minutes and speed rotor at 90 rpm. So, thermoplastic polyurethane can increase the abrasion resistance properties of natural rubber. While natural rubber can increase the friction and reduced tension set of thermoplastic polyurethane, at the ratio between natural rubber and thermoplastic polyurethane 90:10 and 10:90 %wt. It was also found that the used of compatibilizer provide better properties of prepared materials. According to the result, the optimal amount of compatibilizer was 5 per one hundred of rubber composition and used epoxidized natural rubber for compatibilizer. In conclusion, it can be concluded that the developed material has an outstanding performance over the unimproved material.