PP imapangidwa ndi chiyani? Kuyang'ana mwatsatanetsatane za katundu ndi ntchito za polypropylene (PP)
Pankhani ya zida za pulasitiki, funso lodziwika bwino ndiloti PP imapangidwa ndi chiyani.PP, kapena polypropylene, ndi polima ya thermoplastic yomwe imakhala yofala kwambiri pamoyo watsiku ndi tsiku komanso ntchito zamafakitale. M'nkhaniyi, tisanthula mwatsatanetsatane mankhwala ndi thupi la zinthu za PP ndi ntchito zake zosiyanasiyana m'madera osiyanasiyana.
PP ndi chiyani?
PP (Polypropylene) Chinese dzina polypropylene, ndi kupanga utomoni opangidwa ndi polymerisation wa propylene monoma. Ndi gulu la mapulasitiki a polyolefin ndipo ndi amodzi mwa mapulasitiki omwe amagwiritsidwa ntchito kwambiri padziko lonse lapansi. Zida za polypropylene zakhala mzati wofunikira pamakampani apulasitiki chifukwa chakuchita bwino komanso kutsika mtengo kopangira.
Mapangidwe a Chemical ndi katundu wa PP
Kuchokera pamalingaliro amankhwala, mawonekedwe a mamolekyu a PP ndi osavuta ndipo amakhala ndi ma atomu a kaboni ndi haidrojeni.PP ili ndi mzere wokhala ndi mayunitsi angapo a propylene mu unyolo wa maselo, ndipo kapangidwe kameneka kamapereka kukana kwamankhwala abwino komanso kukhazikika.PP zakuthupi zilibe zomangira ziwiri, chifukwa chake zikuwonetsa kukana kwambiri makutidwe ndi okosijeni, asidi ndi alkali. zakuthupi zimakhala ndi zotchingira bwino kwambiri zamagetsi komanso zimayamwa chinyezi pang'ono, zomwe zimapangitsa kuti zizigwiritsidwa ntchito kwambiri pamagetsi ndi zamagetsi.
Physical Properties ya PP
Zomwe zimapangidwira za polypropylene zimatsimikizira kugwiritsidwa ntchito kwake pazinthu zambiri.PP ili ndi digiri yapamwamba ya crystallinity, yomwe imapangitsa kuti ikhale yolimba kwambiri komanso yamphamvu.PP imakhala yochepa kwambiri (pafupifupi 0.90 mpaka 0.91 g / cm³), yomwe ndi imodzi mwazochepa kwambiri pakati pa mapulasitiki, kupanga mankhwala a PP opepuka kwambiri. kutentha popanda kupunduka.PP imakhala ndi malo osungunuka kwambiri (160 mpaka 170 ° C), zomwe zimapangitsa kuti zikhale zotheka kuzigwiritsira ntchito kutentha kwapamwamba popanda kupunduka. kusintha. Zinthu zakuthupi izi zimapangitsa PP kukhala yabwino kunyamula, katundu wapanyumba ndi zida zamagalimoto.
Malo ogwiritsira ntchito zipangizo za PP
Chifukwa cha zinthu zake zabwino kwambiri, PP imagwiritsidwa ntchito pazinthu zosiyanasiyana. M'makampani oyikamo, PP imagwiritsidwa ntchito kwambiri popanga matumba apulasitiki, kuyika zakudya ndi zipewa za botolo chifukwa sizowopsa, zopanda fungo ndipo zimasunga chakudya chatsopano kwa nthawi yayitali. Pazachipatala, PP imagwiritsidwa ntchito popanga ma syringes ndi labware, omwe amayamikiridwa chifukwa cha kukana kwawo kwamankhwala komanso katundu wabwino woletsa kutsekereza, komanso m'makampani opangira magalimoto, komwe amagwiritsidwa ntchito popanga zodzikongoletsera zamkati ndi ma bumpers, mwa zina, chifukwa cha kukana kwake komanso katundu wopepuka.
Wosamalira chilengedwe komanso Wokhazikika
Ndi chidziwitso chowonjezereka cha chitetezo cha chilengedwe, zinthu za PP zimayamikiridwa chifukwa cha recyclability.PP katundu akhoza kukonzedwanso ndi kugwiritsiridwa ntchito kupyolera mu makina obwezeretsanso kapena kukonzanso mankhwala, kuchepetsa kulemedwa kwa chilengedwe.
Mapeto
Funso la zomwe PP imapangidwira likhoza kuyankhidwa mokwanira kudzera mu kapangidwe kake ka mankhwala, katundu wakuthupi, ndi mitundu yosiyanasiyana ya ntchito.PP ikugwira ntchito yofunika kwambiri pakukula kwa mafakitale monga chuma, chokhazikika, komanso chilengedwe. Ngati mukufuna kukwera mtengo komanso kusinthasintha posankha zinthu zapulasitiki, PP mosakayikira ndi chisankho chabwino.