Ukuhlukaniswa kwe-PP kanye nezakhiwo izinzuzo kanye nokubi:
I-Polypropylene (PP) ihlukaniswe i-homo-polymer polypropylene (PP-H), ibhulokhi (umthelela) i-co-polymer polypropylene (PP-B) kanye ne-random (okungahleliwe) i-polymer polypropylene (PP-R).Yiziphi izinzuzo, ukungalungi kanye nokusetshenziswa kwe-PP?Yabelana nawe namuhla.
1. I-Homo-polymer polypropylene (PP-H)
Inziwe nge-polymerized kusuka ku-propylene monomer eyodwa, futhi iketango lamangqamuzana aliqukethe i-ethylene monomer, ngakho-ke ukujwayelekile kweketango lamangqamuzana kuphezulu kakhulu, ngakho-ke okubalulekile kunobucwebe obuphezulu kanye nokusebenza kabi komthelela.Ukuze kuthuthukiswe ukuqina kwe-PP-H, abanye abahlinzeki bempahla eluhlaza basebenzisa indlela yokuhlanganisa irabha ye-polyethylene ne-ethylene-propylene ukuze kuthuthukiswe ukuqina kwento, kodwa ayikwazi ukuxazulula ngokuyisisekelo ukuzinza kwe-PP okumelana nokushisa isikhathi eside. -H.ukusebenza
Izinzuzo: amandla amahle
Ukungalungi: ukumelana nomthelela ongemuhle (okushwabana kakhudlwana), ukuqina okungenamandla, ukuzinza kwe-dimensional okungekuhle, ukuguga kalula, ukuqina okungekuhle ukumelana nokushisa kwesikhathi eside.
Isicelo: Ibanga lokuvuthela i-Extrusion, ibanga lentambo eyisicaba, ibanga lokubumba umjovo, ibanga le-fiber, ibanga lefilimu elifuthwe.Ingasetshenziselwa ukubopha, ukufutha amabhodlela, amabhulashi, izintambo, izikhwama ezilukiweyo, amathoyizi, amafolda, izinto zikagesi, izinto zasendlini, amabhokisi esidlo sasemini e-microwave, amabhokisi okugcina, amafilimu ephepha.
Indlela yokucwasa: lapho umlilo usha, ucingo luyisicaba, futhi alude.
2. Ngokungahleliwe (okungahleliwe) i-polypropylene ye-copolymerized (PP-R)
Itholakala nge-co-polymerization ye-propylene monomer kanye nenani elincane le-ethylene (1-4%) i-monomer ngaphansi kwesenzo sokushisa, ingcindezi kanye ne-catalyst.I-ethylene monomer isatshalaliswa ngokungahleliwe futhi ngokungahleliwe ochungechungeni olude lwe-propylene.Ukwengezwa okungahleliwe kwe-ethylene kunciphisa i-crystallinity kanye nephuzu lokuncibilika kwe-polymer, futhi kuthuthukisa ukusebenza kwempahla ngokomthelela, ukumelana nengcindezi ye-hydrostatic yesikhathi eside, ukuguga kwe-oxygen eshisayo isikhathi eside, nokucubungula amapayipi nokubumba.Isakhiwo se-molecular chain PP-R, okuqukethwe kwe-ethylene monomer nezinye izinkomba zinomthelela oqondile ekuzinzeni kokushisa okushisayo, izakhiwo zemishini kanye nezakhiwo zokucubungula zezinto.Ukusatshalaliswa okungahleliwe kwe-ethylene monomer ochungechungeni lwemolekyuli ye-propylene, kubaluleke kakhulu ushintsho lwezakhiwo ze-polypropylene.
Izinzuzo: ukusebenza okuhle okuphelele, amandla aphezulu, ukuqina okuphezulu, ukumelana nokushisa okuhle, ukuzinza okuhle kwe-dimensional, ukuqina okuhle kakhulu kwezinga lokushisa eliphansi (ukuguquguquka okuhle), ukukhanya okuhle, isicwebezelisi esihle
Ukungalungi: ukusebenza kahle kakhulu ku-PP
Isicelo: Ibanga lokufuthwa kwe-Extrusion, ibanga lefilimu, ibanga lokubumba lomjovo.Amashubhu, amafilimu ashwabanisayo, amabhodlela okuconsa, iziqukathi ezibonisa ngale, imikhiqizo yasendlini esobala, amasirinji alahlwayo, amafilimu ephepha asongayo.
Indlela yokuhlonza: ayibi mnyama ngemva kokuthungela, futhi ingakhipha ucingo olude oluyindilinga
3. Vimba (umthelela) i-co-polymer polypropylene (PP-B)
Okuqukethwe kwe-ethylene kuphakeme kakhulu, ngokuvamile ku-7-15%, kodwa ngenxa yokuthi amathuba okuxhuma ama-monomers amabili ethylene kanye nama-monomers amathathu ku-PP-B aphezulu kakhulu, kubonisa ukuthi njengoba i-ethylene monomer ikhona kuphela esigabeni se-block, i-The regularity. ye-PP-H iyancipha, ngakho ayikwazi ukufeza inhloso yokuthuthukisa ukusebenza kwe-PP-H ngokwezinga lokuncibilika, ukumelana nokucindezela kwe-hydrostatic yesikhathi eside, ukuguga kwe-oxygen eshisayo isikhathi eside kanye nokucubungula amapayipi kanye nokwakheka.
Izinzuzo: ukumelana nomthelela ongcono, izinga elithile lokuqina lithuthukisa amandla omthelela
Ukungalungi: ukukhanya okuphansi, ukucwebezela okuphansi
Isicelo: Ibanga le-Extrusion, ibanga lokubumba lomjovo.Obhampa, imikhiqizo enezindonga ezincane, izinqola, okokusebenza kwezemidlalo, imithwalo, amabhakede okupenda, amabhokisi ebhethri, imikhiqizo enezindonga ezincane
Indlela yokuhlonza: ayibi mnyama ngemva kokuthungela, futhi ingakhipha ucingo olude oluyindilinga
Amaphuzu ajwayelekile: i-anti-hygroscopicity, i-acid ne-alkali corrosion resistance, ukumelana nokuncibilika, ukumelana ne-oxidation okungekuhle ezingeni lokushisa eliphezulu.
Izinga lokugeleza kwe-MFR ye-PP lisebangeni lika-1-40.Izinto ze-PP ezine-MFR ephansi zinokumelana nomthelela ongcono kodwa i-ductility ephansi.Ngezinto ezifanayo ze-MFR, amandla ohlobo lwe-co-polymer aphakeme kunalawo ohlobo lwe-homo-polymer.Ngenxa ye-crystallization, ukuncipha kwe-PP kuphezulu kakhulu, ngokuvamile ku-1.8-2.5%.
