Yenziwe ngantoni iPP? Ujongo oluneenkcukacha kwiipropati kunye nokusetyenziswa kwe-polypropylene (PP)
Xa kuziwa kwizinto zeplastiki, umbuzo oqhelekileyo yintoni iPP eyenziwe ngayo.PP, okanye i-polypropylene, i-polymer ye-thermoplastic exhaphake ngokugqithisileyo kubomi bemihla ngemihla kunye nezicelo zemizi-mveliso. Kweli nqaku, siya kuhlalutya ngokweenkcukacha iikhemikhali kunye neempawu ezibonakalayo zePP kunye noluhlu lwayo olubanzi lwezicelo kwiinkalo ezahlukeneyo.
Yintoni iPP?
I-PP (i-Polypropylene) Igama lesiTshayina le-polypropylene, i-resin yokwenziwa eveliswa yi-polymerisation ye-propylene monomer. Iyeyeqela le-polyolefin leeplastiki kwaye yenye yezona zinto zixhaphakileyo zisetyenziswayo emhlabeni. Izinto zePolypropylene ziye zaba yintsika ebalulekileyo kwishishini leplastiki ngenxa yokusebenza kakuhle kunye neendleko zokuvelisa eziphantsi.
Ubume beMichiza kunye neempawu zePP
Ukusuka kumbono wekhemikhali, i-molecular structure ye-PP ilula kwaye iqulethe i-carbon kunye ne-athom ye-hydrogen.PP inesakhiwo esinemigca eneeyunithi ezininzi zepropylene kwikhonkco le-molecular, kwaye esi sakhiwo sisinika ukuchasana kweekhemikhali kunye nokuzinza.PP impahla ayinayo ibhondi ephindwe kabini, kwaye ngoko ibonisa ukuxhathisa okuphezulu kwi-oxidation, i-asidi kunye neendawo ze-alkali. Isixhobo sinokugquma kombane okugqwesileyo kunye nokufunxa okuphantsi kokufuma, okwenza ukuba isetyenziswe ngokubanzi kwimimandla yombane neye-elektroniki.
IiPropati zoBume bePP
Iimpawu ezibonakalayo zepolypropylene zinquma ukusetyenziswa kwayo kuluhlu olubanzi lwezicelo.PP inezinga eliphezulu le-crystallinity, eyenza ibe lukhuni kwaye yomelele.PP inobunzima obuphantsi (malunga ne-0.90 ukuya kwi-0.91 g / cm³), enye yezona ziphantsi kakhulu phakathi kweeplastiki, okwenza iimveliso zePP zilula kakhulu.I-high melting point. amaqondo obushushu ngaphandle kokukhubazeka.PP inendawo ephezulu yokunyibilika (160 ukuya kwi-170 ° C), eyenza kube lula ukuyisebenzisa kumaqondo obushushu aphezulu ngaphandle kokukhubazeka. deformation. Ezi zakhiwo zomzimba zenza iPP ilungele ukupakishwa, iimpahla zendlu kunye neendawo zemoto.
Iindawo zokusetyenziswa kwezixhobo zePP
Ngenxa yeepropati zayo ezigqwesileyo, iPP isetyenziswa kuluhlu olubanzi lwezicelo. Kwishishini lokupakisha, i-PP isetyenziswa ngokuqhelekileyo ukwenza iingxowa zeplastiki, ukupakishwa kokutya kunye neebhotile zebhotile kuba ayinayo ityhefu, ayinavumba kwaye igcina ukutya kutsha ixesha elide. Kwicandelo lezonyango, i-PP isetyenziselwa ukwenza iisirinji ezilahlwayo kunye ne-labware, ezithandwa ngenxa yokuxhathisa kwazo iikhemikhali kunye neempawu ezilungileyo zokuvala inzala, kunye nakwishishini leemoto, apho isetyenziselwa ukwenza ii-trim zangaphakathi kunye ne-bumpers, phakathi kwezinye izinto, ngenxa yempembelelo yayo egqwesileyo kunye neempawu ezikhaphukhaphu.
Ihambelana nendalo kwaye iZinzile
Ngokunyuka kolwazi lokukhuselwa kwendalo, izinto zePP zixabiswa ngenxa yokuphinda zisetyenziswe.Iimveliso zePP zinokuphinda zisetyenziswe kwaye zisetyenziswe ngokutsha ngomatshini okanye ukuphinda kusetyenziswe iikhemikhali, ukunciphisa umthwalo kwindalo.
Ukuqukumbela
Umbuzo wokuba yintoni iPP eyenziwe ngayo ingaphendulwa ngokupheleleyo ngokusebenzisa ubume bayo beekhemikhali, iipropati ezibonakalayo, kunye noluhlu olubanzi lwezicelo.PP idlala indima ephambili kwinani elikhulayo lamashishini njengezinto ezinoqoqosho, ezihlala zihleli, kunye nokusingqongileyo. Ukuba ufuna indleko-esebenzayo kunye nokuguquguquka xa ukhetha izinto zeplastiki, iPP ngokungathandabuzekiyo lukhetho olufanelekileyo.