Menene thermoplastics?
Thermoplastics wani nau'in robobi ne waɗanda ke filastik a wani yanayin zafi, ƙarfafa bayan sanyaya, kuma suna iya r.epea wannan tsari. Tsarin kwayoyin halitta yana da siffa mai linzamin kwamfuta na polymer, wanda gabaɗaya baya da ƙungiyoyi masu aiki, kuma ba ya jujjuya madaidaicin tsaka-tsakin ƙwayoyin cuta lokacin zafi. Ana iya sake sarrafa samfuran sharar gida zuwa sabbin samfura bayan an sake yin amfani da su. Babban nau'ikan su ne polyolefins (vinyls, olefins, styrenes, acrylates, olefins masu ɗauke da fluorine, da sauransu), cellulose, polyether polyesters da Aromatic heterocyclic polymers, da sauransu.
definition
Thermoplastics sune robobi da aka fi amfani da su. An tsara su tare da resin thermoplastic a matsayin babban sashi da ƙari daban-daban. A ƙarƙashin wasu yanayin zafin jiki, robobi na iya yin laushi ko narke cikin kowane nau'i, kuma siffar ba ta canzawa bayan sanyaya; wannan hali na iya zama repeated sau da yawa kuma koyaushe yana da filastik, kuma wannan repetition ne kawai canji na jiki, wanda ake kira thermoplastic. filastik.
Ciki har da polyethylene, polypropylene, Polyvinyl chloride, polystyrene, polyoxymethylene, polycarbonate, polyamide, acrylic robobi, sauran polyolefins da copolymers, polysulfone, polyphenylene ether
Rarraba Tsari
Za'a iya raba kayan aikin thermoplastics zuwa robobi na gabaɗaya, robobin injiniya, da robobi na musamman bisa ga halayen aikinsu, fa'idar amfani da yawa, da juzu'in fasahar gyare-gyare.
Babban halayen robobi na gaba ɗaya sune: aikace-aikace mai faɗi, aiki mai dacewa, da ingantaccen aiki mai kyau. Kamar polyethylene (PE), polyvinyl chloride (PVC), polypropylene (PP), polystyrene (PS), acrylonitrile-butadiene-styrene (ABS) kuma an san su da "robobi biyar na gaba ɗaya".
Halayen robobin injiniya da robobi na musamman su ne: wasu sifofi da kaddarorin manyan polymers sun fi fice musamman, ko fasahar sarrafa gyare-gyaren tana da wahala, da sauransu, kuma galibi ana amfani da su a cikin ƙwararrun injiniya ko fannoni na musamman da lokuta. Babban robobi na injiniya sune: nailan (Nylon), polycarbonate (PC), polyurethane (PU), polytetrafluoroethylene (Teflon), PTFE), polyethylene terephthalate (PET), da dai sauransu, na musamman Plastics kamar "synthetic heart valves" da "artificial joint" kamar "polymers likita".