Abstract: The electrical resistivity character and stabilization of PTC material were studied with polyacrylic acid latex and stearic acid emulsion as matrix and carbon black as conductive functional material. then it was applied for fabric coating and the finishing coating agents for conductive fabric,also possessing both the PTC effect and phase change accumulatorthermal capacity was acquired.the electrical resistivity character of the coating agents with different proportions were measured to give the optimal proportion of raw materials.the Furthermore relations of the conductive behavior with thecarbon black content, temperature, and emulsion or suspension consisting was studied and the coating stability was test.the results show that:the pad coated possess notable positive temperature coefficient (PTC) effects, as well as a very excellent adhesion properties. At the same time, those coatings play the role of memory storage of heat in the phase transition temperature range of the stearic acid and can also be used as latent thermal energy storage materials.

Key words: carbon black, polyacrylate emulsion, stearic acid, PTC effect