1. Kev Taw Qhia
Polystyrene (PS) yog ib hom thermoplastic polymer uas siv tau ntau yam thiab pheej yig uas siv dav hauv kev ntim khoom, khoom siv rau cov neeg siv khoom, thiab kev tsim kho. Muaj ob hom tseem ceeb—General Purpose Polystyrene (GPPS, pob tshab) thiab High Impact Polystyrene (HIPS, ua los ntawm roj hmab)—PS muaj nqis rau nws qhov ruaj khov, yooj yim ua, thiab pheej yig. Tsab xov xwm no tshawb nrhiav cov khoom ntawm PS yas, cov ntawv thov tseem ceeb, cov txheej txheem ua, thiab kev lag luam.
2. Cov Khoom ntawm Polystyrene (PS)
PS muaj cov yam ntxwv sib txawv nyob ntawm nws hom:
A. Polystyrene Siv Tau Dav Dav (GPPS)
- Kev Pom Tseeb ntawm Qhov Muag - Pob tshab, zoo li iav.
- Rigidity & Brittleness - Nyuaj tab sis yooj yim tawg thaum muaj kev ntxhov siab.
- Sib dua - Qhov ceev tsawg (~1.04–1.06 g/cm³).
- Kev rwb thaiv hluav taws xob - Siv rau hauv cov khoom siv hluav taws xob thiab cov khoom pov tseg.
- Kev Tiv Thaiv Tshuaj - Tiv taus dej, kua qaub, thiab alkalis tab sis yaj hauv cov kuab tshuaj xws li acetone.
B. Cov Polystyrene Uas Muaj Kev Cuam Tshuam Siab (HIPS)
- Kev Ruaj Khov Zoo Dua - Muaj 5–10% roj hmab polybutadiene rau kev tiv taus kev cuam tshuam.
- Pom tsis meej - Tsis pom tseeb dua li GPPS.
- Yooj yim dua rau Thermoforming - Zoo tagnrho rau kev ntim khoom noj thiab cov thawv pov tseg.
3. Cov Ntawv Siv Tseem Ceeb ntawm PS Yas
A. Kev Lag Luam Ntim Khoom
- Cov Thawv Khoom Noj (Cov khob pov tseg, cov tais diav clamshell, cov riam)
- Cov thawv CD & DVD
- Ua Npuas Ncauj Tiv Thaiv (EPS - Expanded Polystyrene) - Siv rau hauv kev ntim cov txiv laum huab xeeb thiab rwb thaiv tsev.
B. Khoom Siv Rau Cov Neeg Siv Khoom
- Cov Khoom Ua Si & Cov Ntawv Sau (Cov cib zoo li LEGO, cov thawv cwj mem)
- Cov Thawv Tshuaj Pleev Xim (Cov thawv me me, cov raj mis pleev di ncauj)
C. Khoom Siv Hluav Taws Xob & Khoom Siv Hauv Tsev
- Cov ntaub thaiv tub yees
- Cov Npog Zaub Pob Khawm (GPPS)
D. Kev Tsim Kho & Kev Rwb Thaiv Tsev
- EPS Ua Npuas Ncauj Boards (Lub tsev rwb thaiv tsev, pob zeb sib dua)
- Cov Kho Kom Zoo Nkauj
4. Cov Txheej Txheem Ua Khoom Siv Rau PS Yas
PS tuaj yeem tsim tau los ntawm ntau txoj kev:
- Kev Txhaj Tshuaj Moulding (Feem ntau rau cov khoom tawv xws li cov riam)
- Extrusion (Rau cov ntawv, zaj duab xis, thiab cov profile)
- Thermoforming (Siv rau hauv cov khoom noj ntim)
- Ua Npuas Ncauj Moulding (EPS) - PS nthuav dav rau kev rwb thaiv tsev thiab cushioning.
5. Cov Qauv Lag Luam & Cov Kev Sib Tw (2025 Outlook)
A. Kev Ruaj Ntseg & Kev Tswj Xyuas Kev Cai Lij Choj
- Kev Txwv Tsis Pub Siv Ib Zaug Xwb PS - Ntau lub teb chaws txwv tsis pub siv cov khoom PS uas siv ib zaug xwb (piv txwv li, EU's Single-Use Plastics Directive).
- Cov Khoom Siv Rov Ua Dua Tshiab & Bio-Based PS - Kev thov ntau ntxiv rau lwm yam khoom siv uas zoo rau ib puag ncig.
B. Kev sib tw los ntawm Lwm Cov Yas
- Polypropylene (PP) - Tiv taus cua sov thiab ruaj khov dua rau kev ntim khoom noj.
- PET & PLA - Siv rau hauv cov khoom ntim khoom siv rov ua dua tshiab / biodegradable.
C. Kev Lag Luam Hauv Cheeb Tsam
- Cov teb chaws Es Xias-Pacific (Tuam Tshoj, Is Nrias teb) yog cov tseem ceeb hauv kev tsim khoom thiab kev siv PS.
- North America & Tebchaws Europe tsom mus rau kev siv dua tshiab thiab EPS rwb thaiv tsev.
- Middle East nqis peev rau hauv PS ntau lawm vim yog tus nqi khoom noj khoom haus qis.
6. Xaus Lus
Polystyrene tseem yog ib qho yas tseem ceeb hauv kev ntim khoom thiab cov khoom siv rau cov neeg siv khoom vim nws tus nqi qis thiab yooj yim rau kev ua. Txawm li cas los xij, kev txhawj xeeb txog ib puag ncig thiab kev cai lij choj txwv tsis pub siv PS ib zaug xwb yog qhov tsav tsheb kev tsim kho tshiab hauv kev rov ua dua tshiab thiab lwm yam khoom siv bio-based. Cov chaw tsim khoom hloov kho rau cov qauv kev lag luam ncig yuav txhawb nqa kev loj hlob hauv kev lag luam yas uas hloov pauv.
Lub sijhawm tshaj tawm: Lub Rau Hli-10-2025