1. Mawu Oyamba
Polystyrene (PS) ndi polima yosinthika komanso yotsika mtengo ya thermoplastic yomwe imagwiritsidwa ntchito kwambiri pakuyika, katundu wogula, ndi kumanga. Zilipo m’mitundu iwiri ikuluikulu—General Purpose Polystyrene (GPPS, crystal clear) ndi High Impact Polystyrene (HIPS, yolimba ndi labala)—PS ndi yamtengo wapatali chifukwa cha kulimba kwake, kumasuka kwake, ndi kutha kuigula. Nkhaniyi ikuyang'ana katundu wa pulasitiki wa PS, ntchito zazikulu, njira zogwirira ntchito, ndi momwe msika ukuyendera.
2. Katundu wa Polystyrene (PS)
PS imapereka mawonekedwe osiyanasiyana kutengera mtundu wake:
A. General Purpose Polystyrene (GPPS)
- Kuwoneka bwino - Kuwonekera, mawonekedwe ngati galasi.
- Kukhazikika & Kukhazikika - Kuvuta koma kotheka kusweka pansi pa kupsinjika.
- Opepuka - Kachulukidwe kochepa (~1.04–1.06 g/cm³).
- Electrical Insulation - Amagwiritsidwa ntchito pamagetsi ndi zinthu zomwe zimatha kutaya.
- Kukana kwa Chemical - Kumakana madzi, zidulo, ndi alkalis koma kumasungunuka mu zosungunulira monga acetone.
B. High Impact Polystyrene (HIPS)
- Kulimbitsa Kwambiri - Muli 5-10% ya mphira wa polybutadiene wokana mphamvu.
- Mawonekedwe Opaque - Osawonekera kwambiri kuposa GPPS.
- Thermoforming Yosavuta - Yoyenera kulongedza zakudya ndi zotengera zotayidwa.
3. Ntchito zazikulu za PS Plastic
A. Packaging Viwanda
- Zotengera Zakudya (makapu otaya, zipolopolo, zodulira)
- Nkhani za CD & DVD
- Foam Yoteteza (EPS - Expanded Polystyrene) - Imagwiritsidwa ntchito poyika mtedza ndi kutchinjiriza.
B. Katundu wa Ogula
- Zoseweretsa & Zolemba (njerwa zonga LEGO, zolembera zolembera)
- Zodzikongoletsera (zopakapaka, machubu opaka milomo)
C. Zamagetsi & Zida
- Firiji Liners
- Transparent Display Covers (GPPS)
D. Construction & Insulation
- EPS Foam Boards (zomanga zomanga, konkriti wopepuka)
- Zokongoletsera Zokongoletsera
4. Njira Zopangira PS Pulasitiki
PS ikhoza kupangidwa pogwiritsa ntchito njira zingapo:
- Jekeseni Woumba (Wamba pazinthu zolimba ngati zodulira)
- Extrusion (Kwa mapepala, mafilimu, ndi mbiri)
- Thermoforming (Yogwiritsidwa ntchito popaka chakudya)
- Foam Molding (EPS) - Zowonjezera PS za kusungunula ndi kupopera.
5. Zochitika Pamsika & Zovuta (2025 Outlook)
A. Sustainability & Regulatory Pressures
- Kuletsa Kugwiritsa Ntchito Kumodzi PS - Mayiko ambiri amaletsa zinthu za PS zotayidwa (mwachitsanzo, EU's Single-Use Plastics Directive).
- Recycled & Bio-based PS - Kukula kwakukula kwa njira zina zokomera zachilengedwe.
B. Mpikisano wochokera ku Alternative Plastics
- Polypropylene (PP) - Zosatentha kwambiri komanso zokhazikika pakuyika chakudya.
- PET & PLA - Amagwiritsidwa ntchito muzowonjezera zobwezerezedwanso/zowonongeka.
C. Regional Market Dynamics
- Asia-Pacific (China, India) imayang'anira kupanga ndi kugwiritsa ntchito kwa PS.
- North America & Europe imayang'ana kwambiri pakubwezeretsanso komanso kutsekemera kwa EPS.
- Middle East imayika ndalama popanga PS chifukwa chotsika mtengo.
6. Mapeto
Polystyrene imakhalabe pulasitiki wofunikira pakuyika ndi katundu wa ogula chifukwa cha mtengo wake wotsika komanso wosavuta kukonza. Komabe, kukhudzidwa kwa chilengedwe ndi kuletsa kwalamulo pakugwiritsa ntchito kamodzi kwa PS kukuyendetsa luso lazobwezeretsanso ndi zina zotengera bio. Opanga omwe amagwirizana ndi mitundu yozungulira yazachuma azipititsa patsogolo kukula kwa msika wapulasitiki womwe ukupita patsogolo.
Nthawi yotumiza: Jun-10-2025