I-PP polypropylene
Uhla olujwayelekile lwesicelo:
Imboni yezimoto (ikakhulukazi kusetshenziswa izithasiselo zensimbi eziqukethe i-PP: izivikelo zodaka, imibhobho yokungenisa umoya, amafeni, njll.), izinto zikagesi (izicabha zomshini wokuwasha izitsha, imibhobho yokungenisa umoya yomshini wokomisa, ozimele bemishini yokuwasha kanye nezembozo, imibhobho yomnyango wesiqandisi, njll.), eJapane Sebenzisa izimpahla zabathengi (imishini yotshani neyasengadini efana
Imishini yokugunda utshani kanye nemishini yokufafaza, njll.).
Izimo zenqubo yokubumba umjovo:
Ukwelashwa kokomisa: Uma kugcinwe kahle, akukho ukwelashwa kokomisa okudingekayo.
Izinga lokushisa lokuncibilika: 220~275℃, qaphela ukuthi ungadluli ku-275℃.
Izinga lokushisa lesikhunta: 40~80℃, 50℃ liyanconywa. Izinga lokwakheka kwekristalu linqunywa kakhulu yizinga lokushisa lesikhunta.
Ingcindezi yomjovo: kufika ku-1800bar.
Isivinini somjovo: Ngokuvamile, ukusetshenziswa komjovo wesivinini esikhulu kunganciphisa ingcindezi yangaphakathi ibe yincane. Uma kukhona amaphutha ebusweni bomkhiqizo, umjovo wesivinini esiphansi ekushiseni okuphezulu kufanele usetshenziswe.
Ama-Runner nama-Gates: Kwabagijimi ababandayo, ububanzi obujwayelekile bomgijimi bungu-4 ~ 7mm. Kunconywa ukusebenzisa i-port yokujova eyindilinga kanye ne-runner. Zonke izinhlobo zamasango zingasetshenziswa. Ububanzi obujwayelekile besango buqala ku-1 kuya ku-1.5mm, kodwa amasango amancane njengo-0.7mm nawo angasetshenziswa. Kwamasango asemaphethelweni, ukujula kwesango okungenani kufanele kube yingxenye yobukhulu bodonga; ububanzi besango okungenani kufanele buphindwe kabili kunobukhulu bodonga. Izinto ze-PP zingasebenzisa uhlelo lomgijimi olushisayo.
Izakhiwo zamakhemikhali nezomzimba:
I-PP iyinto e-semi-crystalline. Inzima kune-PE futhi inezinga lokuncibilika eliphakeme. Njengoba i-homopolymer PP ibuthakathaka kakhulu lapho izinga lokushisa liphakeme kune-0°C, izinto eziningi ze-PP zezentengiselwano ziyi-copolymers ezingahleliwe ezine-ethylene noma i-clamp copolymers engu-1 kuya ku-4% enokuqukethwe okuphezulu kwe-ethylene. Izinto ze-Copolymer PP zinezinga lokushisa eliphansi lokuphambuka kokushisa (100°C), ukukhanya okuphansi, ukukhanya okuphansi, ukuqina okuphansi, kodwa zinamandla okushaya ngamandla. Amandla e-PP ayanda ngokwanda kokuqukethwe kwe-ethylene. Izinga lokushisa lokuthambisa le-Vicat le-PP lingu-150°C. Ngenxa yekristalinity ephezulu, ukuqina kobuso kanye nokumelana nokuklwebheka kwale nto kuhle kakhulu. I-PP ayinayo inkinga yokuqhekeka kokucindezeleka kwemvelo. Ngokuvamile, i-PP iguqulwa ngokungeza i-fiber yengilazi, izithasiselo zensimbi noma irabha ye-thermoplastic. Izinga lokugeleza le-MFR le-PP lisukela ku-1 kuya ku-40. Izinto ze-PP ezine-MFR ephansi zinokumelana okungcono kokuthinta kodwa amandla aphansi okunwebeka. Ezintweni ezine-MFR efanayo, amandla ohlobo lwe-copolymer aphezulu kunalawo ohlobo lwe-homopolymer. Ngenxa yokwakheka kwekristalu, izinga lokuncipha kwe-PP liphezulu impela, ngokuvamile liyi-1.8 ~ 2.5%. Futhi ukufana kwesiqondiso sokuncipha kungcono kakhulu kune-PE-HD nezinye izinto. Ukwengeza ama-30% ezithasiselo zengilazi kunganciphisa ukuncipha kube yi-0.7%. Zombili izinto ze-homopolymer kanye ne-copolymer PP zinokumuncwa okuhle kakhulu komswakama, ukumelana nokugqwala kwe-asidi kanye ne-alkali, kanye nokumelana nokuncibilika. Kodwa-ke, ayinakumelana nama-hydrocarbon aromatic (njenge-benzene) solvents, ama-hydrocarbon ane-chlorinated (carbon tetrachloride) solvents, njll. I-PP ayinakho ukumelana nokushiswa kwe-oxidation emazingeni okushisa aphezulu njenge-PE.

Okwethuizipuni zepulasitiki, amashubhu okuhlola epulasitiki, izifutho zamakhalakanye neminye imikhiqizo ethinta umzimba womuntu isebenzisa izinto ze-PP. Sinezinto ze-PP zezinga lezokwelapha kanye nezinto ze-PP zezinga lokudla. Ngoba izinto ze-PP azinabo ubuthi.