PEN applications

The typical differential scanning colorimetric (DSC) traces shown in Figure 9.2 compare the thermal transitions of similar low-DEG-content PEN and PET resins. The fact that the glass transition temperature (Tg) of PEN is 45-50 °C higher than that of PET has a major influence on the processing and performance of PEN applications. In addition, the fact that PEN S Tg is 20-25 °C above the boiling point of water has a significant effect on the thermal stability potential of many hot, aqueous exposure applications. 

PEN applications in the wire and cable market include printer cable and insulated wire wraps. PEN has a higher Tg and melting point, as well as higher flame resistance than PET. PEN him coated with a dispersion consisting of epoxy resin and Al(OH3) gave a semi-cured insulating him. When applied on copper wire, wound, and heated, a coil with good flame retardance and adhesion between the wire and the him was obtained [65],... 

Application with pen or brush-on applicator. The commonly used whitening agent is urea peroxide, applied using an individual pot or pen applicator, between 2 and 8 hours a day for a duration of 2-6 weeks. 

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