Ukuhlukaniswa okuthathu okuyinhloko kanye nokuqhathaniswa kokusebenza kwe-polypropylene (PP)

I-Polypropylene (PP) yi-resin ye-thermoplastic enobukhulu obuncane kakhulu. Ingahlukaniswa ibe yi-homopolypropylene (PP-H) kanye ne-polypropylene ehlanganisiwe. I-polypropylene ehlanganisiwe ihlukaniswe futhi ibe yi-block (i-impact-resistant) i-polypropylene ehlanganisiwe (PP-H). B) kanye ne-random (random) i-polypropylene ehlanganisiwe (PP-R). Kunezinhlobo eziningi zezinto ze-PP, ngakho-ke umehluko wazo uyini? Namuhla sizofunda ngama-PP ahlukahlukene nawe.

I-PP-H

I-polymerized kusuka ku-monomer eyodwa ye-propylene, iyisisindo esincane kakhulu phakathi kwamapulasitiki avamile. Uchungechunge lwayo lwama-molecule lujwayelekile kakhulu, ngakho-ke izinto zinobukristali obuphezulu kanye nezakhiwo ezimbi zokuthinteka.

Izinzuzo: amandla angcono kanye nokumelana nokugqwala okungcono.

Okubi: ukumelana nokushayisana okungekuhle (okubuthakathaka), ukuqina okungekuhle, ukuzinza okungekuhle kobukhulu, ukuguga kalula, ukumelana nokushisa okungekuhle isikhathi eside kanye nokuqina, kanye nezakhiwo ezingekuhle zokuvimbela umoya-mpilo, i-carbon dioxide kanye namanye amagesi.

Ukusetshenziswa: Kungasetshenziswa ekupakisheni amateyipu, amabhodlela aphehliwe, amabhulashi, izintambo, izikhwama ezilukiwe, amathoyizi, amafolda, izinto zikagesi, imikhiqizo yasekhaya, amabhokisi esidlo sasemini e-microwave, amabhokisi okugcina izinto, kanye namafilimu ephepha okusonga.

Indlela yokubona: Uma ishiswa ngumlilo, ucingo luzoba yisicaba futhi lungabi lude.

I-PP-B

Itholakala nge-copolymerizing propylene kanye nengxenye ye-ethylene. Okuqukethwe kwe-ethylene ngokuvamile kungama-7 kuya ku-15%. Kodwa-ke, ngenxa yokuthi amathuba okuxhunywa kwama-monomer amabili e-ethylene kanye nama-monomer amathathu ku-PP-B aphezulu kakhulu, kusho ukuthi i-ethylene monomer ifakiwe kuphela esigabeni sesigaba, ukujwayelekile kwe-PP-H akuncishisiwe, ngakho-ke inhloso yokuthuthukisa iphuzu lokuncibilika, ukumelana nokucindezela kwe-hydrostatic kwesikhathi eside, ukumelana nokushisa kwesikhathi eside kanye nokucubungula amapayipi kanye nezakhiwo zokwakha ze-PP-H azikwazi ukufezwa.

Izinzuzo: ukumelana okungcono komthelela.

Okubi: ukucaca okuphansi, ukucwebezela okuphansi, ukumelana okuncane nokumuncwa komswakama, ukumelana nokugqwala kwe-asidi ne-alkali, ukumelana nokuncibilika kanye nokumelana nokugqwala emazingeni okushisa aphezulu.

Ukusetshenziswa: Kusetshenziswa kuma-bumpers, imikhiqizo enezindonga ezincane, ama-stroller, imishini yezemidlalo, imithwalo, amabhakede okupenda, amabhokisi ebhethri, kanye nemikhiqizo enezindonga ezincane.

Indlela yokubona: Ayibi mnyama ngemva kokushiswa futhi ingakhipha ucingo oluyindilinga olude kakhulu.

PP-R

Itholakala nge-copolymerizing propylene monomer kanye nenani elincane le-ethylene (1-4%) monomer ngaphansi kwesenzo sokushisa, ingcindezi kanye ne-catalyst. I-ethylene monomer isatshalaliswa ngokungahleliwe nangokungahleliwe kuchungechunge olude lwe-propylene. Ukwengezwa okungahleliwe kwe-ethylene kunciphisa ukwakheka kwekristali kanye nephuzu lokuncibilika kwe-polymer, kuthuthukisa umthelela wezinto, ukumelana kwesikhathi eside nengcindezi ye-hydrostatic, ukumelana kwesikhathi eside nokuguga kwe-oxygen eshisayo kanye nokucutshungulwa kwamapayipi kanye nokubumba.

Isakhiwo se-PP-R molecular chain, okuqukethwe kwe-ethylene monomer kanye nezinye izinkomba kunomthelela oqondile ekuzinzeni kokushisa kwesikhathi eside, izakhiwo zemishini kanye nokusebenza kokucubungula kwezinto. Uma ukusatshalaliswa kwe-ethylene monomer ngokungahleliwe ku-propylene molecular chain, kulapho ushintsho lwezakhiwo ze-polypropylene luzoba lukhulu khona.

Izinzuzo: ukusebenza okuhle kakhulu, amandla aphezulu, ukuqina okuphezulu, ukumelana nokushisa okuhle, ukuzinza okuhle kobukhulu, ukuqina okuhle kakhulu kwezinga lokushisa eliphansi (ukuguquguquka okuhle), ukucaca okuhle, kanye nokukhanya okuhle.

Okubi: Ukusebenza okuhle kakhulu phakathi kwe-PP.

Ukusetshenziswa: Kusetshenziswa kumapayipi, amafilimu okunciphisa, amabhodlela okuconsa, izitsha ezibonakala kakhulu, imikhiqizo yasekhaya ebonakala kalula, amasirinji alahlwayo, kanye namafilimu ephepha lokupakisha.

Indlela yokubona: Ayibi mnyama ngemva kokushiswa futhi ingakhipha ucingo oluyindilinga olude kakhulu.

Ukuqhathaniswa kwezinhlobo ezintathu ze-polypropylene

Amandla okukhiqiza okunamathelayo: i-homopolypropylene>i-block copolymerized propylene>i-propylene engahleliwe ye-copolymerized

Ukuqina: I-Homopolypropylene > I-block copolymerized propylene > I-Random copolymerized propylene

Amandla omthelela: i-block copolymerized propylene > i-random copolymerized propylene > i-homopolymerized propylene

Ukucaca: I-propylene engahleliwe ye-copolymerized ＞I-propylene ye-homopolymerized ＞I-propylene ye-block ye-copolymerized

Ukuqina kokushisa okuphansi: i-block copolymerized propylene > i-propylene engahleliwe ye-copolymerized > i-propylene ye-homopolymerized