PP material ndi chiyani? Kusanthula kwathunthu kwa katundu, ntchito ndi zabwino za zida za PP
Pankhani ya mankhwala ndi zipangizo, "PP ndi chiyani" ndi funso wamba, PP ndi chidule cha Polypropylene, ndi ambiri ntchito thermoplastic polima. M'nkhaniyi, tidzasanthula mwatsatanetsatane katundu, njira zopangira, malo ogwiritsira ntchito komanso ubwino wa zipangizo za PP kuti tiyankhe funso la PP ndi chiyani.
1. PP ndi chiyani? Malingaliro oyambira ndi katundu
PP zinthu, mwachitsanzo polypropylene, ndi thermoplastic opangidwa kuchokera propylene monoma kudzera polymerisation reaction. Ili ndi mzere wozungulira, womwe umapangitsa kuti ikhale yolimba komanso yolimba muzinthu zake chifukwa cha mawonekedwe ake apadera a unyolo. Polypropylene ili ndi kachulukidwe kakang'ono pafupifupi 0.90 g/cm³, kupangitsa kuti ikhale imodzi mwamapulasitiki opepuka kwambiri, malo omwe amapangitsa kuti ikhale yabwino pamapulogalamu ambiri.
Polypropylene imagonjetsedwa kwambiri ndi mankhwala, ndipo imatsutsa kwambiri ma asidi ambiri, maziko, mchere ndi zosungunulira za organic. Malo ake osungunuka kwambiri (pafupifupi 130-170 ° C) amapatsa zida za PP kukhazikika kwabwino m'malo otentha kwambiri ndikupangitsa kuti zisawonongeke. Choncho, zipangizo za PP zimagwiritsidwa ntchito kwambiri pazochitika zomwe zimafuna kutentha ndi kukana kwa dzimbiri.
2. Njira yopangira zida za PP
Kupanga kwa zida za PP makamaka kumadalira luso lazothandizira komanso njira zama polymerization. Njira zodziwika bwino zopangira ma polypropylene ndi monga gas-phase polymerization, liquid-phase polymerization ndi intrinsic polymerisation. Njira zosiyanasiyana zama polymerization zimakhudza kulemera kwa maselo, crystallinity ndi katundu wakuthupi wa zipangizo za PP, zomwe zimatsimikiziranso gawo lawo.
Mitundu yosiyanasiyana ya polypropylene, monga homopolymerised polypropylene (Homo-PP) ndi copolymerised polypropylene (Copo-PP), ingapezeke mwa kusintha mtundu wa chothandizira ndi momwe zinthu zimachitikira panthawi yopanga. Homopolymerised polypropylene imakhala yolimba kwambiri komanso kukana kutentha, pomwe copolymerised polypropylene ndiyofala kwambiri pakugwiritsa ntchito tsiku ndi tsiku chifukwa champhamvu yake yayikulu.
3. Malo akuluakulu ogwiritsira ntchito zipangizo za PP
Zida za PP zimagwiritsidwa ntchito m'mafakitale osiyanasiyana chifukwa chapamwamba kwambiri pathupi ndi mankhwala. M'moyo watsiku ndi tsiku, PP imagwiritsidwa ntchito popanga ziwiya zapakhomo, kunyamula chakudya, mapaipi ndi zidole, etc. M'makampani, PP amagwiritsidwa ntchito kwambiri popanga mapaipi amadzimadzi, mapampu ndi ma valve, ndi zina zotero. Zida za PP zimagwiritsidwanso ntchito mochuluka popanga nsalu, zipangizo zamankhwala ndi zida zamagalimoto.
Makamaka mu makampani ma CD, PP wakhala zinthu ankakonda chifukwa cha bwino poyera ndi kutentha kukana, monga wamba mandala posungira chakudya bokosi, mayikirowevu uvuni tableware, etc. Kugwiritsa ntchito zipangizo PP m'munda wa zachipatala akuchulukirachulukira, makamaka disposable syringe, ziwiya zasayansi ndi zinthu zina zofunika kwambiri aseptic.
4. Ubwino wakuthupi wa PP ndi chiyembekezo chamsika
Zinthu za PP zimakondedwa kwambiri makamaka chifukwa cha kulemera kwake, kukana kutentha, kukana kwa mankhwala ndi ntchito yabwino yopangira.PP ilinso ndi magetsi abwino kwambiri komanso chitetezo cha chilengedwe, ikhoza kusinthidwanso kuti ichepetse kuipitsidwa kwa chilengedwe.
Kuchokera pamalingaliro amsika, ndi lingaliro lachitukuko chokhazikika komanso chitetezo chachilengedwe chobiriwira, kufunikira kwa msika wa zida za PP kudzachulukirachulukira. Kubwezeretsanso kwa polypropylene komanso kutsika kwa mpweya wotulutsa mpweya kumapangitsa kuti ikhale yofunika kwambiri pazinthu zosiyanasiyana zomwe zikubwera, monga magwero atsopano amagetsi ndi zida zoteteza chilengedwe.
5. Zoipa ndi zovuta za zipangizo za PP
Ngakhale zabwino zake zodziwikiratu, PP ili ndi zofooka zina, monga kukana kutentha kwapang'onopang'ono komanso kukana kuwala kwa UV. M'magwiritsidwe ntchito, zofooka izi zitha kusinthidwa mwa kuphatikiza kusinthidwa, kuwonjezera ma antioxidants ndi zowonjezera zosamva UV. Ndi chitukuko chaukadaulo, kafukufuku ndi chitukuko cha bio-based polypropylene ndi high-performance copolymers nawonso akupitilira, kutsegulira mwayi watsopano wogwiritsa ntchito zida za polypropylene.
Mapeto
PP ndi zinthu ziti? Ndi thermoplastic yokhala ndi zinthu zabwino kwambiri komanso ntchito zambiri. Kupyolera mu kusanthula mwatsatanetsatane za katundu wake, njira zopangira, madera ogwiritsira ntchito komanso momwe msika ukuyendera, tikhoza kuona momwe zipangizo za PP zilili m'mafakitale osiyanasiyana. Ndi kupita patsogolo kwaukadaulo komanso zoteteza zachilengedwe, kuchuluka kwa zida za PP kupitilira kukula, kubweretsa kusavuta komanso kusinthika kwamakampani ndi moyo wamakono.
Tikukhulupirira kuti kudzera mu kusanthula mwatsatanetsatane kwa nkhaniyi, mukumvetsa mozama zomwe PP ndi chuma.