An experimental study of tensile properties and vibration absorption characteristic of ground tire rubber (GTR )/HDPE waste: Effect of temperature and heating time.

HDPE is type plastic that is often found as after use containers in a large number, is disposed of as waste that pollutes the environment. Likewise with rubber waste which is also often found in landfills such as used tires. This research utilizes HDPE waste and used tires which are then combined as a test sample for mechanical testing and vibration test. 30% of rubber powder and 70% of HDPE powder were mixed and put into metal molds and then pressured at 8.5 Mpa. The size of rubber powder and HDPE have the same size that is equal to mesh 45. The samples in pressurized molds are heated to 140oC and 180oC with variation in heating time are 10 minutes, 15 minutes, and 20 minutes, respectively. After that, tensile testing and vibration testing are carried out on the sample. Microstructure observations were carried out using LSM (laser scanning microscope). For vibration testing, the sample is used as a damper material placed between the electric motor and the supporting plate. The results showed that increasing the heating temperature tends to decrease the tensile strength but increased the strain at the break slightly. Finally, the vibration test shows a decrease in vibration displacement with the use of HDPE/GTR as damper material. The lowest value of peak to peak of vibration amplitude obtained in 180oC heating temperature and 10 minutes of heating time.