Yintoni imathiriyeli yePP? Uhlalutyo olubanzi lweepropati, izicelo kunye neenzuzo zezinto zePP
Kwintsimi yeekhemikhali kunye nezinto eziphathekayo, "yintoni iPP" ngumbuzo oqhelekileyo, i-PP isifinyezo sePolypropylene, i-polymer ye-thermoplastic esetyenziswa ngokubanzi. Kule nqaku, siya kuhlalutya ngokweenkcukacha iipropati, inkqubo yokuvelisa, indawo yesicelo kunye neenzuzo zezinto zePP ukuphendula umbuzo wokuba yiyiphi iPP.
1. Yintoni iPP? Iingcamango ezisisiseko kunye neempawu
Izinto zePP, okt i-polypropylene, yi-thermoplastic eyenziwe kwi-propylene monomer ngokuphendula kwe-polymerisation. Inesakhiwo somgca, esinika ukulinganisela kokuqina kunye nokuqina kwiimpawu zayo ngenxa yesakhiwo sayo esiyingqayizivele se-molecular chain chain. I-Polypropylene inoxinano olusezantsi kuphela malunga ne-0.90 g/cm³, iyenza enye yezona plastiki zikhaphukhaphu, ipropathi eyenza ukuba ilungele usetyenziso oluninzi.
I-Polypropylene ixhathisa kakhulu kwiikhemikhali, ikwazi ukumelana ne-asidi ezininzi, iziseko, iityuwa kunye nezinyibilikisi eziphilayo. Iqondo layo eliphezulu lokunyibilika (malunga ne-130-170 ° C) linika izinto zePP ukuzinza kakuhle kwiindawo eziphakamileyo zokushisa kwaye zibenza bangabikho kwi-deformation. Ngoko ke, izinto zePP zisetyenziswa ngokubanzi kwiimeko ezifuna ukushisa kunye nokumelana nokubola.
2. Inkqubo yokuvelisa izinto zePP
Ukuveliswa kwezinto zePP ikakhulu kuxhomekeke kwiteknoloji ye-catalyst kunye neenkqubo ze-polymerization. Iindlela eziqhelekileyo zokuvelisa i-polypropylene ziquka i-gas-phase polymerisation, i-polymerisation yesigaba solwelo kunye ne-intrinsic polymerisation. Iindlela ezahlukeneyo ze-polymerisation zichaphazela ubunzima be-molecular, i-crystallinity kunye neempawu ezibonakalayo zezinto ze-PP, ezinokuthi zichonge intsimi yazo yesicelo.
Iintlobo ezahlukeneyo zepolypropylene, ezifana ne-homopolymerised polypropylene (Homo-PP) kunye ne-copolymerised polypropylene (Copo-PP), inokufumaneka ngokulungelelanisa uhlobo lwe-catalyst kunye neemeko zokuphendula ngexesha lenkqubo yokuvelisa. I-polypropylene ye-Homopolymerised inobulukhuni obuphezulu kunye nokumelana nobushushu, ngelixa i-polypropylene ye-copolymerised ixhaphake kakhulu kusetyenziso lwemihla ngemihla ngenxa yamandla ayo aphezulu empembelelo.
3. Iindawo ezingundoqo zokusetyenziswa kwezixhobo zePP
Izinto zePP zisetyenziselwa uluhlu olubanzi lwamashishini ngenxa yeempawu zabo eziphezulu zomzimba kunye neekhemikhali. Kubomi bemihla ngemihla, i-PP isetyenziselwa ukuveliswa kwempahla yasendlini, ukupakishwa kokutya, iipayipi kunye namathoyizi, njl. Kwishishini, i-PP isetyenziswa ngokubanzi ekwenzeni imibhobho yeekhemikhali, iimpompo kunye neevalve, njl njl. Izinto zePP nazo zisetyenziselwa ubuninzi bokuveliswa kweempahla, izixhobo zonyango kunye neendawo zemoto.
Ngokukodwa kwishishini lokupakisha, i-PP iye yaba yinto ekhethwayo ngenxa yokungafihli kakuhle kunye nokumelana nobushushu, njengebhokisi eliqhelekileyo lokugcinwa kokutya okucacileyo, i-oven microwave tableware, njl.
4. Izibonelelo zePP eziphathekayo kunye nethemba lemarike
Izinto ze-PP zithandwa kakhulu ngenxa yobunzima bayo obulula, ukumelana nobushushu, ukuxhathisa kweekhemikhali kunye nokusebenza kakuhle kokusebenza.PP ikwanazo zokugquma umbane kunye neempawu zokukhusela okusingqongileyo, zinokuphinda zisetyenziswe ukunciphisa ukungcoliseka kwendalo.
Ukusuka kwimbonakalo yemarike, kunye nombono wophuhliso oluzinzileyo kunye nokukhuselwa kokusingqongileyo okuluhlaza, imfuno yemarike yezinto zePP iya kunyuka ngakumbi. Ukuphinda kusetyenziswe iPolypropylene kunye neempawu zokukhupha ikhabhoni ephantsi zenza ukuba kubaluleke ngakumbi kwizicelo ezahlukeneyo ezivelayo, njengemithombo emitsha yamandla kunye nezixhobo ezihambelana nokusingqongileyo.
5. Izinto ezingeloncedo kunye nemingeni yezinto zePP
Ngaphandle kwezibonelelo zayo ezicacileyo, iPP ineziphene ezithile, ezifana nokunganyangeki kwempembelelo yobushushu obuphantsi kunye nokunganyangeki kakuhle kwisibane se-UV. Kwizicelo ezisebenzayo, ezi ntsilelo zinokuphuculwa ngokuxuba ukuguqulwa, ukongezwa kwe-antioxidants kunye ne-UV-resistant additives. Ngokuphuhliswa kwetheknoloji, uphando kunye nophuhliso lwe-polypropylene esekelwe kwi-bio kunye ne-copolymers ephezulu yokusebenza nayo iyaqhubeka, ivula amathuba amatsha okusetyenziswa kwezixhobo ze-polypropylene.
Ukuqukumbela
Yintoni iPP imathiriyeli? I-thermoplastic eneempawu ezibalaseleyo kunye noluhlu olubanzi lwezicelo. Ngohlalutyo olucacileyo lweepropati zayo, iinkqubo zemveliso, iindawo zokusetyenziswa kunye nethemba lemarike, sinokubona indawo engenakuphinda ithathelwe indawo yezinto zePP kumashishini ahlukeneyo. Ngokuqhubela phambili kwetekhnoloji kunye neemfuno zokhuseleko lokusingqongileyo, umda wokusetyenziswa kwezinto zePP uya kuqhubeka usanda, uzisa ukulungelwa ngakumbi kunye nokutsha kwishishini lanamhlanje kunye nobomi.
Siyathemba ukuba ngohlalutyo olucacileyo lweli nqaku, unokuqonda okunzulu malunga nokuba yintoni na iPP.