Waa maxay heerkulka-guurka dhalada (Tg) ee budada polymer dib loo firdhi karo?

Heerkulka dhalada-kala-guurka (Tg) ee budada polymer-ka dib loo cusboonaysiin karo way kala duwanaan kartaa iyadoo ku xidhan polymerka gaarka ah ee la isticmaalo. Budada polymer dib loo cusboonaysiin karo ayaa sida caadiga ah laga sameeyaa noocyo kala duwan oo polymers ah sida vinyl acetate ethylene (VAE), vinyl acetate versatate (VAE VeoVa), iyo ethylene vinyl acetate (EVA), iyo kuwo kale.

Tg-ku-salaysan VAE-ku-salaysan budo-polymer-ka dib loo firdhiyo waxay caadi ahaan u dhexeeyaan ku dhawaad ​​-10°C ilaa 10°C. Tg ee budada polymer dib loo cusboonaysiin karo ee ku salaysan EVA aad ayey u kala duwanaan kartaa iyadoo ku xidhan kobolymerka gaarka ah ee EVA ee la isticmaalo, laakiin caadi ahaan waa inta u dhaxaysa -50°C ilaa 0°C.

Waxaa muhiim ah in la ogaado in Tg ee budada polymer dib loo cusboonaysiin karo ay saameyn ku yeelan karto hantidooda iyo waxqabadkooda codsiyo kala duwan, sida nidaamyada sibidhka, xabagta foornada, iyo wax-soo-saarka. Sidaa darteed, waxaa muhiim ah in la tixgeliyo Tg ee budada polymer-ka gaarka ah ee la isticmaalayo iyo sida ay u saameyn karto codsiga loogu talagalay.