Waa maxay thermoplastics?
Thermoplastics waa nooc balaastig ah oo heerkul gaar ah leh, adkeeya qaboojinta ka dib, oo awood u lehepehabkan. Qaab dhismeedka molecular waxaa lagu gartaa iskudhis polymer toos ah, kaas oo aan guud ahaan lahayn kooxo firfircoon, oo aan marin isku xidhka intermolecular toos ah marka la kululeeyo. Badeecooyinka qashinka dib ayaa loo habayn karaa oo laga dhigayaa alaab cusub dib-u-warshadaynta ka dib. Noocyada ugu muhiimsan waa polyolefins (vinyls, olefins, styrenes, acrylates, olefins fluorine ku jira, iwm), cellulose, polyester polyester iyo aromatic heterocyclic polymers, iwm.
Qeexid
Thermoplastics waa balaastikada ugu badan ee la isticmaalo. Waxaa lagu qaabeeyey xabagta thermoplastic oo ah qaybta ugu muhiimsan iyo waxyaabo kala duwan oo lagu daro. Xaaladaha heerkulka qaarkood, balaastiggu way jilicsanaan karaan ama u dhalaali karaan qaab kasta, qaabkana wuu isbeddelaa ka dib qaboojinta; gobolkani wuxuu noqon karaa repemarar badan la cunay oo had iyo jeer waxay leedahay caag, tanina repeTirintu waa uun isbeddel jidheed, kaas oo loo yaqaan thermoplastic. caag ah.
Oo ay ku jiraan polyetylen, polypropylene, polyvinyl chloride, polystyrene, polyoxymethylene, polycarbonate, polyamide, balaastikada akril, polyolefins kale iyo copolymers ay, polysulfone, polyphenylene ether
Kala soocida qaab dhismeedka
Thermoplastics waxaa loo qaybin karaa balaastiig ujeedo-guud ah, balaastikada injineernimada, iyo balaastikada gaarka ah iyadoo loo eegayo sifooyinkooda wax qabad, adeegsiyeedyo kala duwan, iyo kala duwanaanshaha tignoolajiyada qaabaynta.
Astaamaha ugu muhiimsan ee balaastikada ujeeddada guud waa: codsi ballaadhan, habayn ku habboon, iyo waxqabad dhammaystiran oo wanaagsan. Sida polyetylen (PE), polyvinyl chloride (PVC), polypropylene (PP), polystyrene (PS), acrylonitrile-butadiene-styrene (ABS) ayaa sidoo kale loo yaqaan "shan caag ah oo ujeedo guud ah".
Astaamaha balaastikada injineernimada iyo balaastikada gaarka ah waa: qaab-dhismeedyada qaarkood iyo sifooyinka polymers-ka sare ayaa si gaar ah u muuqda, ama tignoolajiyada farsamaynta qaabaynta ayaa aad u adag, iwm. Balaastigga injineernimada ugu weyn waa: naylon (Nylon), polycarbonate (PC), polyurethane (PU), polytetrafluoroethylene (Teflon), PTFE), polyetylen terephthalate (PET), iwm, caagag gaar ah sida "qalabyada wadnaha synthetic" iyo "kala-goysyada macmalka ah" sida "polymers caafimaad".