Results 221 to 230 of about 2,804,682 (261)

Thermal aging of polyvinyl chloride

CEIDP '05. 2005 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2005., 2005
This paper reports on the study of the thermal aging of the polyvinyl chloride used in high voltage cables. This study shows that thermal aging changes the electrical properties of the material. We notice that the higher the aging temperature is, the more important is the rate of degradation of the insulator.
M. Nedjar, A. Beroual, M. Bournane
openaire   +1 more source

Thermal aging of molding compounds

2010 11th International Conference on Electronic Packaging Technology & High Density Packaging, 2010
The mechanical properties of polymer encapsulating materials change considerably when packages are exposed to elevated temperatures for longer times. Here we report a systematic study on the change in viscoelastic properties of a commercial molding compound which is stored at 175°C for periods of time ranging up to 4 weeks.
K.M.B. Jansen, J. de Vreugd, L.J. Ernst, C. Bohm   +3 more
openaire   +1 more source

Thermal aging of EPR cables

Proceedings., Second International Conference on Properties and Applications of Dielectric Materials, 2003
The results of thermal endurance tests performed on models of EPR (ethylene-propylene rubber) cables are presented. The problems of selecting the properties related to aging and their endpoints are discussed. A method for obtaining an objective failure criterion for different properties and a unique thermal endurance graph are described.
openaire   +1 more source

Thermal Aging of ThickFilm Resistors

2009
The paper reports the results of a systematic study of the effects of thermal ageing in thick-film resistors (TFRs) over a wide temperature range (from 125°C to 4O0°C). The relative change of resistance ?>R/R was studied as a function of ageing temperatures and times.
openaire   +1 more source

Thermal Ageing

2022
openaire   +1 more source

Epigenetics and Regenerative Medicine

Medical Epigenetics, 2021
Hannele Ruohola-Baker, Shiri Levy
exaly  

Research on the Impact of High-Temperature Aging on the Thermal Safety of Lithium-Ion Batteries

Journal of Energy Chemistry, 2023
Haifeng Dai, Xuezhe Wei, Jiangong Zhu
exaly  

Thermal Stresses and Physical Aging

2003
Abstract In an attempt to explain the stresses encountered in the plastics industry, this article first defines the different types of internal stresses in amorphous polymers. Each type of thermal stress is then discussed in detail, with reference to the mechanism of generation and the effect on engineering properties.
openaire   +1 more source

Effect of Aging Temperature on Thermal Stability of Lithium-Ion Batteries: Part A – High-Temperature Aging

Renewable Energy, 2023
Zhirong Wang, Dongxu Ouyang, Tianfeng Gao   +2 more
exaly  

Changes of Components and Rheological Properties of Bitumen Under Dynamic Thermal Aging

Construction and Building Materials, 2021
Jianan Liu, Zhenjun Wang, Rui Luo
exaly