Zhiwei Li
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Zhiwei Li has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
- Hui Geng
State Key Lab of Alternate Electrical Power System with Renewable Sources, North China Electric Power University, Beijing 102206, China
1 shared publication - Kang Ma
State Key Lab of Alternate Electrical Power System with Renewable Sources, North China Electric Power University, Beijing 102206, China
1 shared publication - Mengchao Hou
State Key Lab of Alternate Electrical Power System with Renewable Sources, North China Electric Power University, Beijing 102206, China
1 shared publication - Nan Li
State Grid Baoding Electric Power Supply Company, Baoding 071000, China
1 shared publication - Shenghui Wang
North China Electric Power University
1 shared publication - Wenwen Zhang
State Key Lab of Alternate Electrical Power System with Renewable Sources, North China Electric Power University, Beijing 102206, China
1 shared publication
Latest Publications
- Open Access
Research on the Influence of Extremely Cold Environment on the Performance of Silicone Rubber and Fluorinated Silicone Rubber
In order to study the performance variation characteristics of silicone rubber and fluorinated silicone rubber at extremely cold temperatures, two type samples were frozen for 0, 150, 300, 450, 600, 750, 900 and 1050 h in a low-temperature test chamber with a constant temperature of −50 °C. After the samples reached a certain freezing time, they were taken out and placed at room temperature for 2 h, then the breakdown voltage, mechanical tensile properties, and hardness and surface morphology were measured, and the mechanism was analyzed. The breakdown voltage, maximum tensile force, and tensile strength of the two type samples increased with freezing time. The elongation at break decreased with freezing time, but the hardness of the two materials changed little. Microcracks appeared on the surface of the samples at about 300 h and some tiny pore and holes appeared at 750 h. The length and depth of the microcracks gradually developed with freezing time. The comparative test results of the two materials showed that the performance of fluorinated silicone rubber was better than that of silicone rubber, which indicates that fluorinated silicone rubber is more stable for some applications in extremely cold environments.
Open AccessResearch on the Influence of Extremely Cold Environment on the Performance of Silicone Rubber and Fluorinated Silicone Rubber
In order to study the performance variation characteristics of silicone rubber and fluorinated silicone rubber at extremely cold temperatures, two type samples were frozen for 0, 150, 300, 450, 600, 750, 900 and 1050 h in a low-temperature test chamber with a constant temperature of −50 °C. After the samples reached a certain freezing time, they were taken out and placed at room temperature for 2 h, then the breakdown voltage, mechanical tensile properties, and hardness and surface morphology were measured, and the mechanism was analyzed. The breakdown voltage, maximum tensile force, and tensile strength of the two type samples increased with freezing time. The elongation at break decreased with freezing time, but the hardness of the two materials changed little. Microcracks appeared on the surface of the samples at about 300 h and some tiny pore and holes appeared at 750 h. The length and depth of the microcracks gradually developed with freezing time. The comparative test results of the two materials showed that the performance of fluorinated silicone rubber was better than that of silicone rubber, which indicates that fluorinated silicone rubber is more stable for some applications in extremely cold environments.