Monthly Archives: September 2024

‘Effect Of Heat Treatment Time On The PTC Behavior Of Wollastonite/CB/CPE Composites – Nature.com’

Nature.com Sep 19, 2024

Wollastonite Wcarbon black CBchlorinated polyethylene CPE conductive composites were prepared via melt compounding using CB and wollastonite as fillers and CPE as the matrix. To analyze the internal structure of the material and examine how changes in crystallinity affect the positive temperature coefficient PTC behavior of the composites several characterization techniques were employed. These methods included scanning electron microscopy X-ray diffraction and differential scanning calorimetry. Each method provided insights into the structural adjustments and their implications for the electrical properties of the material. Special attention was given to the influence of the wollastonite content on the electrical conductivity of the composites. The results demonstrated that the lowest room-temperature resistivity 1.66 937183cm was achieved with 15 wt. wollastonite doping after 18201h of heat treatment. At the same time the PTC strength increased to 4.7. Wollastonite Wcarbon black CBchlorinated polyethylene CPE conductive composites were prepared via melt compounding using CB and wollastonite as fillers and CPE as the matrix. The results indicated that the room temperature resistivity of CPECBwollastonite composites decreased to 1.66937183cm after 18201hour of heat treatment and the PTC strength reached 4.7. Subsequently the relationship between the internal structure of the materials changes in crystallinity and PTC properties was analyzed using X-ray diffractometry and DSC differential scanning calorimetry.