Rarraba PP da kaddarorin abũbuwan amfãni da rashin amfani:
Polypropylene (PP) ya kasu kashi-homo-polymer polypropylene (PP-H), toshe (tasiri) co-polymer polypropylene (PP-B) da bazuwar (random) co-polymer polypropylene (PP-R).Menene fa'idodi, rashin amfani da amfani na PP?Raba muku shi yau.
1. Homo-polymer polypropylene (PP-H)
Yana da polymerized daga monomer propylene guda ɗaya, kuma sarkar kwayoyin ba ta ƙunshi ethylene monomer ba, don haka tsarin tsarin kwayoyin halitta yana da girma sosai, don haka kayan yana da babban crystallinity da rashin tasiri mai tasiri.Domin inganta brittleness na PP-H, wasu albarkatun kasa masu kaya kuma amfani da hanyar blending polyethylene da ethylene-propylene roba don inganta taurin na kayan, amma shi ba zai iya fundamentally warware da dogon lokacin da zafi-resistant kwanciyar hankali na PP. -H.yi
Abvantbuwan amfãni: ƙarfi mai kyau
Hasara: rashin ƙarfi juriya (mafi karyewa), rashin ƙarfi mara ƙarfi, rashin kwanciyar hankali mara kyau, sauƙin tsufa, rashin kwanciyar hankali na tsayin daka na zafi
Application: Extrusion busa sa, lebur yarn sa, allura gyare-gyaren sa, fiber sa, hura fim sa.Ana iya amfani da su don ɗaure, busa kwalabe, goge, igiyoyi, jakunkuna da aka saka, kayan wasan yara, manyan fayiloli, kayan lantarki, kayan gida, akwatunan abincin rana na microwave, akwatunan ajiya, fina-finai na takarda
Hanyar nuna wariya: lokacin da wuta ta ƙone, wayar tana kwance, kuma ba ta da tsawo.
2. Bazuwar (bazuwar) polypropylene copolymerized (PP-R)
Ana samun shi ta hanyar haɗin gwiwa na propylene monomer da ƙaramin adadin ethylene (1-4%) monomer a ƙarƙashin aikin zafi, matsa lamba da mai kara kuzari.Ana rarraba ethylene monomer ba da gangan ba kuma an rarraba shi cikin dogon sarkar propylene.Bazuwar ƙari na ethylene yana rage kristal da ma'anar narkewa na polymer, kuma yana inganta aikin kayan aiki dangane da tasiri, tsayin daka na matsa lamba na hydrostatic, tsufa na oxygen na thermal na dogon lokaci, da sarrafa bututu da gyare-gyare.Tsarin sarkar kwayoyin PP-R, abun ciki na ethylene monomer da sauran alamomi suna da tasiri kai tsaye a kan kwanciyar hankali na thermal na dogon lokaci, kayan aikin injiniya da kayan aiki na kayan aiki.Mafi yawan rarraba ethylene monomer a cikin sarkar kwayoyin propylene, mafi mahimmancin canjin kayan polypropylene.
Abũbuwan amfãni: kyakkyawan aiki mai mahimmanci, babban ƙarfi, babban tsayin daka, kyakkyawan juriya na zafi, kwanciyar hankali mai kyau, kyakkyawan yanayin zafi mai kyau (mai sassaucin ra'ayi), kyakkyawar nuna gaskiya, mai kyau mai sheki.
Rashin hasara: mafi kyawun aiki a cikin PP
Application: Extrusion busa sa, fim sa, allura gyare-gyaren sa.Tubes, fina-finai masu raguwa, kwalabe masu ɗigo, kwantena masu haske sosai, samfuran gida na gaskiya, sirinji da za a iya zubarwa, fina-finai na takarda
Hanyar ganewa: baya juya baki bayan kunnawa, kuma yana iya fitar da dogon waya mai zagaye
3. Toshe (tasiri) co-polymer polypropylene (PP-B)
Abubuwan da ke cikin ethylene suna da girma sosai, gabaɗaya 7-15%, amma saboda yuwuwar haɗa ethylene monomers guda biyu da monomers uku a cikin PP-B yana da girma sosai, yana nuna cewa tunda ethylene monomer kawai ya wanzu a cikin toshe lokaci, tsarin yau da kullun. na PP-H ya rage, don haka ba zai iya cimma manufar inganta aikin PP-H dangane da yanayin narkewa, tsayin daka na hydrostatic matsa lamba, dogon lokaci thermal oxygen tsufa da kuma sarrafa bututu da kuma kafa.
Abũbuwan amfãni: mafi kyawun juriya mai tasiri, wani nau'i mai mahimmanci yana inganta ƙarfin tasiri
Rashin hasara: ƙananan nuna gaskiya, ƙananan sheki
Aikace-aikace: Extrusion sa, allura gyare-gyaren sa.Bumpers, samfuran sirara, masu tuƙi, kayan wasanni, kaya, bokitin fenti, akwatunan baturi, samfuran sirara masu bango
Hanyar ganewa: baya juya baki bayan kunnawa, kuma yana iya fitar da dogon waya mai zagaye
Abubuwan gama gari: anti-hygroscopicity, acid da alkali lalata juriya, juriya juriya, juriya mara kyau na iskar shaka a babban zazzabi
Adadin kwarara MFR na PP yana cikin kewayon 1-40.Abubuwan PP tare da ƙananan MFR suna da mafi kyawun juriya mai tasiri amma ƙananan ductility.Don kayan MFR guda ɗaya, ƙarfin nau'in co-polymer ya fi na nau'in homo-polymer.Saboda crystallization, shrinkage na PP ne quite high, kullum 1.8-2.5%.
