Thetha nawe malunga neempawu eziphambili kunye nokusetyenziswa kwepolypropylene (PP).
Okokuqala, yintoni i-polypropylene?I-Polypropylene ifinyeziwe njenge "PP".I-resin ye-thermoplastic kunye nokucwangciswa rhoqo kunye nokuphezuluELECTRIC THERMAL ACTUATOR(ikristale iphezulu ukuya kuma-95%) ipholymerized ukusuka kwipropylene.Inokwahlulwa ibe yi-PP yokubumba inaliti, umzobo we-PP wocingo, i-PP fiber, ifilimu yePP, umbhobho wePP.Phakathi kweeplastiki ezisetyenziswa ngokuqhelekileyo ebomini, i-polypropylene yenye yezona ntlobo zilula kakhulu.
Apha ngezantsi kukho iipropathi zepolypropylene:
1. Iimpawu ezibonakalayo: ezingenabungozi, ezingenavumba, ezingenancasa, ezimhlophe ezimhlophe kunye ne-crystalline ephezulu ye-0.9-0.91g / cm3 kuphela, ukuzinza okulungileyo kumanzi.
2. Ukusebenza kwe-Thermal: Inokumelana nokushisa okulungileyo, kwaye iimveliso zayo ziyakwazi ukutshatyalaliswa kumaqondo okushisa angaphezu kwe-100 ° C, kwaye aziyi kukhubaza kwi-150 ° C ngaphandle kwamandla angaphandle.Ubushushu be-embrittlement yi--35 °C, kwaye i-embrittlement iyenzeka ngaphantsi kwe -35 °C, kwaye ukumelana nokubanda akukuhle njenge-polyethylene.
3. Ukuzinza kweekhemikhali: Ukuzinza kweekhemikhali kuhle kakhulu.Ukongeza ekungcolisweni yi-asidi yesulfuric egxininisiweyo kunye ne-nitric acid, izinzile kwezinye ii-reagents zemichiza, kodwa i-aliphatic hydrocarbons ephantsi, i-hydrocarbons enevumba elimnandi kunye ne-chlorinated hydrocarbons inokwenza i-polymer Propylene ithambe kwaye idumbe, kwaye ukuzinza kwayo kwiikhemikhali kuyanda. ukwanda kwe-crystallinity, ngoko ke i-polypropylene ifanelekile ukwenza imibhobho yeekhemikhali ezahlukeneyo kunye nokufakelwa, kwaye inefuthe elihle lokuchasana nokubola.
4. Iimpawu zombane: Ine-coefficient ephezulu ye-dielectric, kunye nokunyuka kweqondo lokushisa, ingasetyenziselwa ukwenza iimveliso zombane ezifudumalayo.Ikwanayo ne-voltage ephezulu yokuphuka kwaye ifanelekile ukusetyenziswa njengezixhobo zombane, njl njl. Inokumelana kakuhle nombane kunye ne-arc, kodwa inombane ophezulu we-static, kwaye kulula ukuguga xa idibene nobhedu.
I-Polypropylene isetyenziswa ngokubanzi kuzo zombini izixhobo zendlu kunye nemibhobho yeplastiki.Izixhobo zombane zasekhaya ziye zakhula ngokukhawuleza kwiminyaka yakutshanje, zineentlobo ezininzi kunye nemveliso enkulu.Ngoko ke, kwiminyaka embalwa ezayo, ukuphuhliswa kwezinto ezikhethekileyo zePP zezixhobo zendlu ziya kwandiswa ukuhlangabezana neemfuno eziguqukayo zemarike.
Ngo-2003, imveliso yesizwe yonke yemibhobho yeplastiki igqithe kwi-1.8 yezigidi zeetoni, ukunyuka konyaka ngonyaka ngama-23%.Kwiintsuku zokuqala, imibhobho yePP yayisetyenziswa kakhulu njengemibhobho yamanzi yezolimo, kodwa imarike ayiphumelelanga ukuvulwa ngenxa yeengxaki ezithile ekusebenzeni kweemveliso zangaphambili (amandla empembelelo kunye nokunganyangeki kokuguga).Kodwa ngokungeniswa kwetekhnoloji, imarike iye yamkelwa ngokuthe ngcembe.Imibhobho yePlastiki yenye yeemveliso eziphambili zokukhuthaza kunye nokusetyenziswa kwezinto zokwakha iikhemikhali kwilizwe lam.UMphathiswa wezoKwakha ukhuphe "isaziso sokuqinisa uLawulo lweMveliso kunye nokuKhuthaza kunye nokuSetyenziswa kweMibhobho yeCopolymerized Polypropylene (PP-R, PP-B)" kwi-2001, efuna amasebe afanelekileyo Asebenzisane ukwenza umsebenzi omhle kwizinto eziluhlaza, ukucubungula, umgangatho wokusetyenziswa kombhobho kunye nofakelo, kunye nokulawula ngokungqongqo umgangatho wemibhobho yePP, ukuze wenze ngcono umsebenzi omhle kwimveliso, isicelo kunye nokukhuthazwa kwemibhobho yePP kwilizwe lam.
Ngokuphuculwa kwemigangatho yokuphila kwabantu, luphuhliso olulungileyo ukuphuhlisa izinto ezikhethekileyo zePP ezicacileyo, ngokukodwa izixhobo ezikhethekileyo zePP ezinokucaca okuphezulu, ukuguquguquka okulungileyo, kunye nokuqulunqwa ngokukhawuleza kuyafuneka ukuyila kunye nokusebenza kwiimveliso zePP ezithandwayo ngabantu.I-PP ecacileyo ibonakalisa ngakumbi kune-PP eqhelekileyo, i-PVC, i-PET, i-PS, kwaye ineenzuzo ezininzi kunye nethemba lophuhliso.Okwangoku, kukho umsantsa omkhulu phakathi kwezinto ezikhethekileyo zePP zasekhaya ezicacileyo kunye namazwe angaphandle, kunye nokuveliswa kunye nokusetyenziswa kwe-resin ye-PP ecacileyo kunye neemveliso zayo zisafuna ukuqiniswa.
Ukongeza, i-polypropylene isetyenziselwa ukunweba ifilimu yePP kunye nokunye.
Ixesha lokuposa: Sep-24-2022