In this study, the characteristics of electrostatic attenuation in plain shape glass filament sample (0.29 mm thickness, cross section of 12.25 cm2, 16 cm2, 20.25 cm2) for insulator has been measured at temperature of 5℃∼ 38℃, humidity of 50%∼90%. The results of this study are as follows. In case of samples that the cross section is 12.25 cm2, 16 cm2, 20.25 cm2 at humidity of 50%∼90%, it found that the electrification voltage of electrostatic increased with increasing temperature, with a return to decrease at 20℃. In case of samples that the cross section is 12.25 cm2, 16 cm2, 20.25 cm2 at temperature of 5℃~38℃, it found that the electrification voltage of electrostatic decreased with increasing humidity. In case of the sample at temperature of 20℃ and humidity of 65%, 75%, it found that the electrification voltage of electrostatic increased with increasing cross section. In case of the sample at humidity of 65% and cross section of 12.25 cm2, the time that it takes to reduce electrification voltage of electrostatic in half decreased to 0.912s, 0.736s, 0.673s with increasing temperature to 10℃ 20℃, 30℃.

In this study, the electrification voltage of electrostatics for silicone rubber sample(4 cm × 4 cm × 0.103 cm) following immersion with contaminants of 2 ml, 5 ml, 10 ml for six hours has been measured in through the applied voltage of 10 kV DC at temperature of 80℃∼110℃, humidity of 50%∼90%. The results of this study are as follows. In case the contaminants is constant, it found that the electrification voltage of electrostatic decreased with increasing temperature and humidity to 35℃, 90%. In case of 2 ml of contaminants concentration, it found that the electrification voltage of electrostatic decreased with increasing temperature and humidity to 35℃, 50%. In case of the sample at temperature of 15℃ and humidity of 50%, it found that the electrification voltage of electrostatic decreased with increasing contaminants to 10 ml.

In this study, we have come to the following conclusions regarding to the electrification properties (electrostatic electrification voltage and electrification relaxation time) of electrostatics in the three type of specimen (size: 4 cm × 4 cm × 0.103 cm) of silicone rubber which is mixed with the ATH (Aluminium Trihydrate(Al(OH3)) of 30 phr, 60 phr, 120 phr as reinforcing filler. The electrification properties of electrostatics were measured for the different mixing ratio of ATH with the applied voltage of DC 10 kV at the temperature range of 10℃∼30℃ and humidity range of 60%∼80%. When the temperature remained constant, the electrical resistance decreased as the humidity increasing in the range of 60%, 70%, 80%. In contrast, when the humidity remained constant, the electrical resistance increased as the temperature increasing in the range of 10℃, 20℃, 30℃. Regarding these results, may be it is because the absorption of O-H molecule appeared in the silicone specimen. It was confirmed that when the temperature remained constant, the electrification relaxation time decreased as the humidity increased. In contrast, when the humidity remained constant, the electrification relaxation time increased as the temperature increased.