PP polypropylene
Ibanga lohlelo lokusebenza olujwayelekile:
Imboni yezimoto (ikakhulukazi kusetshenziswa i-PP equkethe izithasiselo zensimbi: onogada, imigudu yokukhipha umoya, amafeni, njll.), izinto zikagesi (amalayini eminyango yomshini wokuwasha izitsha, amapayipi okungenisa umoya okomisa, amafreyimu emishini yokuwasha namakhava, omalayini beminyango yesiqandisi, njll.), Japan Sebenzisa izimpahla zabathengi ( utshani kanye nemishini engadini ezifana
Abagunda utshani nabafafaza, njll.).
Izimo zenqubo yesikhunta sokujova:
Ukwelashwa okomisa: Uma kugcinwe kahle, akukho ukwelashwa okomisa okudingekayo.
Izinga lokushisa elincibilikayo: 220 ~ 275 ℃, qaphela ukuthi lingeqi ku-275 ℃.
Izinga lokushisa lesikhunta: 40 ~ 80 ℃, 50 ℃ liyanconywa.Izinga le-crystallization linqunywa ngokuyinhloko izinga lokushisa lesikhunta.
Ukucindezela komjovo: kufika ku-1800bar.
Isivinini sokujova: Ngokuvamile, ukusetshenziswa komjovo wejubane eliphezulu kunganciphisa ukucindezela kwangaphakathi kube kuncane.Uma kukhona ukukhubazeka ebusweni bomkhiqizo, umjovo wejubane eliphansi ezingeni lokushisa eliphezulu kufanele usetshenziswe.
Abagijimi namasango: Kubagijimi ababandayo, ububanzi obujwayelekile bomgijimi bungu-4~7mm.Kunconywa ukusebenzisa imbobo yomjovo oyindilinga kanye nomgijimi.Zonke izinhlobo zamasango zingasetshenziswa.Ububanzi besango obujwayelekile busukela ku-1 kuye ku-1.5mm, kodwa amasango amancane njengo-0.7mm angasetshenziswa.Emasangweni onqenqemeni, ukujula kwesango elincane kufanele kube ingxenye yobukhulu bodonga;ububanzi besango obuncane kufanele bube okungenani kabili ukujiya kodonga.Izinto ze-PP zingasebenzisa isistimu yomgijimi oshisayo.
Izici zamakhemikhali nezomzimba:
I-PP iyingxenye ye-semi-crystalline.Iqinile kune-PE futhi inephuzu lokuncibilika eliphakeme.Njengoba i-homopolymer PP ishwabana kakhulu uma izinga lokushisa lingaphezu kuka-0°C, izinto eziningi ze-PP zokuhweba zingama-copolymer angahleliwe ane-ethylene engu-1 kuya ku-4% noma ama-clamp copolymers anokuqukethwe okuphezulu kwe-ethylene.Izinto ze-Copolymer PP zinezinga lokushisa eliphansi lokuhlanekezela okushisayo (100°C), ukukhanya okuphansi okuphansi, ukucwebezela okuphansi, ukuqina okuphansi, kodwa kunamandla omthelela anamandla.Amandla e-PP akhula ngokwanda kokuqukethwe kwe-ethylene.Izinga lokushisa le-Vicat elithambisayo le-PP lingu-150°C.Ngenxa ye-crystallinity ephezulu, ukuqina kwendawo kanye nokumelana nokuklwebheka kwalesi sici kuhle kakhulu.I-PP ayinayo inkinga yokuqhekeka kokucindezeleka kwemvelo.Ngokuvamile, i-PP iguqulwa ngokwengeza i-glass fiber, izithasiselo zensimbi noma irabha ye-thermoplastic.Izinga lokugeleza kwe-MFR ye-PP lisukela ku-1 kuye ku-40. Izinto ze-PP ezine-MFR ephansi zinokumelana nomthelela ongcono kodwa amandla okwelula aphansi.Okwezinto zokwakha ezine-MFR efanayo, amandla ohlobo lwe-copolymer aphakeme kunalawo ohlobo lwe-homopolymer.Ngenxa yokucwebezela, izinga lokuncipha kwe-PP liphezulu impela, ngokuvamile li-1.8~2.5%.Futhi ukufana kokuqondisa kokuncipha kungcono kakhulu kunokwe-PE-HD nezinye izinto.Ukwengeza ama-30% ezithasiselo zengilazi kunganciphisa ukushwabana kube ngu-0.7%.Kokubili izinto zokwakha ze-homopolymer ne-copolymer PP zinokumuncwa okuhle kakhulu komswakama, ukumelana nokugqwala kwe-asidi ne-alkali, nokumelana nokuncibilika.Kodwa-ke, ayinakho ukumelana nama-hydrocarbons anephunga elimnandi (njenge-benzene), izinyibilikisi ze-chlorinated hydrocarbons (carbon tetrachloride), njll. I-PP ayinakho ukumelana ne-oxidation emazingeni okushisa aphezulu njenge-PE.

Eyethuizinkezo zepulasitiki, amashubhu okuhlola epulasitiki, ama-inhalers ekhalaneminye imikhiqizo ehlangana nomzimba womuntu isebenzisa izinto ze-PP.Sinezinto ze-PP zebanga lezokwelapha kanye nezinto ze-PP zebanga lokudla.Ngoba izinto ze-PP azinabo ubuthi.