Question and answer of heat resistant wire and cable technology

By: huaxing coampany
 
BEIJING - Aug. 19, 2020 - PRLog -- In the development of low-voltage heat-resistant wires and cables, we usually fall into confusion about what kind of heat-resistant conductor, insulation material, sheath structure and the use environment and method of heat-resistant wire and cable. Referring to the opinions of foreign heat-resistant wire and cable experts, this paper gives a brief answer to these questions.

Question 1: if the continuous rated temperature of FEP and silicone rubber insulated cables is 200 ℃, what is the difference? Which material is better for the same application?

A: FEP Teflon is a thermoplastic that melts again when exposed to high enough temperatures. Silicone rubber is a thermosetting material, which can form stronger chemical bond in its molecule under the action of thermal activation catalyst. When exposed to high temperatures, silicone rubber will carbonize or degrade into very fine powder.

Question 2: if the continuous rated temperature of PFA Teflon and silicone rubber insulated cables is 200 ℃, what is the difference? Which material is better for the same application?

A: the performance of PFA Teflon (tetrafluoroethylene perfluoroalkoxy vinyl ether copolymer, also known as perfluoroalkylation and soluble polytetrafluoroethylene) is similar to that of FEP, except that the rated temperature of PFA is 250 ℃. The properties of silicone rubber with rated temperature of 200 ℃ are similar to those of mixture materials with rated temperature of 250 ℃.

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