Balaastik tayo sare leh - polymers molecular oo sarreeya

Walxaha caagga ah ee caadiga ah:
Caadi ahaan balaastigga la isticmaalo maaha hal qayb, waxaa laga sameeyay walxo badan.Waxaa ka mid ah, polymers-molecular sare (ama resins synthetic) waa qaybaha ugu muhiimsan ee balaastikada.Intaa waxaa dheer, si loo hagaajiyo waxqabadka balaastikada, agabyada kala duwan ee caawiya, sida buuxinta, balaastikada, saliidaha, iyo xasiliyeyaasha, waa in lagu daraa xeryahooda molecular sare., Colorants, wakiilada antistatic, iwm, waxay noqon karaan balaastiig leh waxqabad wanaagsan.

Waxyaalaha lagu daro caagagga, sidoo kale loo yaqaan wax-ku-darka caagga ah, waa isku-dhisyo ay tahay in lagu daro si loo hagaajiyo waxqabadka farsamaynta polymer-ka (synthetic resin) ama si loo hagaajiyo waxqabadka xabka laftiisa marka polymerka (synthetic resin) la farsameeyo.Tusaale ahaan, si loo yareeyo heerkulka qaabaynta ee resin polyvinyl chloride, balaastiigiyaha ayaa lagu daraa si badeecadu u jilicsanaato;tusaale kale waa in lagu daro wakiilka xumbo-diyaarinta miisaanka khafiifka ah, gariirka u adkaysta, kulaylka, iyo xumbo-xakamaynta dhawaaqa;Heerkulka burburku wuxuu aad ugu dhow yahay heerkulka habaynta wax-soo-saarka, wax-soo-saarka lama gaari karo iyada oo aan lagu darin xasiliyeyaasha kulaylka.Sidaa darteed, waxyaabaha lagu daro caaggu waxay ku jiraan boos gaar ah oo muhiim u ah habaynta caagagga.

Caagaggu waa isku-xidhka polymer-ka (macromolecules), oo caadi ahaan loo yaqaan balaastiigyada ama resins, kuwaas oo ay polymerized by monomers sida alaabta ceeriin iyada oo lagu daro polymerization ama falcelinta polycondensation.Halabuurka iyo qaabka ayaa loo beddeli karaa si xor ah.Waxay ka kooban tahay resins synthetic iyo buuxinyaal.Balaastiijiyaha, xasiliyaha, saliidaha, midabka iyo waxyaabaha kale ee lagu daro.