Ma resini a polyethylene (PE) ndi ma polima a thermoplastic zomwe zikutanthauza kuti amatha kupangidwa ndi kutentha ndikusungunukanso popanda kutaya mawonekedwe awo enieni. Ma thermoplastic amasiyana motere ndi ma thermosets, omwe amasinthidwa kosatha akauma.
Ma resini a polyethylene amagawidwa m'magulu atatu akuluakulu: low density (LDPE), high density (HDPE), ndi ultra-high molecular weight (UHMW-PE). LDPE imagwiritsidwa ntchito popanga matumba apulasitiki, mwachitsanzo; HDPE, ya mapaipi otayira madzi; ndi, UHMW-PE ya zida zachipatala. Kawirikawiri, kuchuluka kwa zinthuzo kukakhala kwakukulu, kapangidwe kake kamakhala kolimba kwambiri. Ma crystalline apamwamba amakhala ndi kutentha kwakukulu kwa ntchito.
LDPE imafotokozedwa bwino ngati yolimba pang'ono koma yopyapyala kwambiri motero imalola kuti itambasulidwe popanda kusweka. Ndi yotchuka pamitundu yosiyanasiyana ya ma paketi kuyambira mabotolo ofinyidwa mpaka filimu yotsekera. HDPE ili ndi mphamvu zambiri koma yopyapyala pang'ono, zomwe zimapangitsa kuti ikhale yothandiza pazinthu zomwe ziyenera kusunga mawonekedwe ake monga zitini za zinyalala. HDPE imakhalabe yokonzeka kugwiritsidwa ntchito pa -60°C. UHMW-PE ndi yolimba kwambiri, yokhala ndi mphamvu zolemera zomwe zimayandikira za zitsulo zina. Popeza ndi yolimba kwambiri ku zotupa, ndi yoyenera kugwiritsidwa ntchito mwapadera monga zomangira nthawi ndi mawilo a makina a mabotolo, ma pad ovalira a malo olumikizirana, ndi zina zotero.
Monga ma thermoplastic ambiri, ma polyethylene resin amayamwa chinyezi mosavuta. Kawirikawiri safuna njira zapadera zowumitsira musanagwiritse ntchito jakisoni kapena kukonza zina.
Zinthu zomwe zili mu mawonekedwe ake achilengedwe nthawi zambiri zimakhala zoyera kapena zakuda ndipo zimakhala zowala zikachepetsedwa kuti zigwirizane ndi kukula kwa mabotolo a mkaka ndi zina zotero. Ogulitsa amatha kusintha kapangidwe kake kuti kawonjezere mphamvu ya kung'ambika, kuwonekera bwino, mawonekedwe, kusindikizidwa, ndi zina zotero, ngati pakufunika kutero kuti zigwirizane ndi momwe ntchitoyo ikugwiritsidwira ntchito.
| Analysis Project | Quality Index | Zotsatira zakuyesa | Njira yoyesera |
|
Maonekedwe a granular Tinthu ta utoto ndi tinthu takuda/k |
≤10 | 0 | SH/T 1541.1-2019 |
| chachikulu ndi chaching'ono, g/kg | ≤100 | 0 | SH/T 1541.1-2019 |
| Kuchuluka kwa madzi osungunuka (21.6kg), g/10min | 4.8-7.2 | 6.1 | Q/SY DS 0511 |
| Kuchulukana, kg/m3 | 946-950 | 948.9 | Q/SY DS 0510 |
| Kupsinjika kwa mphamvu yogwira ntchito, MPa | ≥22 | 24.9 | Q/SY DS 0512 |
| Kupsinjika kwamphamvu panthawi yopuma, MPa | ≥24 | 42.2 | Q/SY DS 0512 |
| Kupsinjika kwa mphamvu panthawi yopuma, % | ≥450 | 775 | Q/SY DS 0512 |
Polyethylene imatha kukonzedwa pogwiritsa ntchito njira zopangira zinthu monga blow molding, extrusion, injection molding ndi njira zina, zomwe zimagwiritsidwa ntchito kwambiri popanga filimu yopyapyala, zinthu zopanda kanthu, ulusi ndi zinthu zofunika tsiku ndi tsiku. Ndi zina zotero.
(1) Filimu ya polyethylene (PE) imagwiritsidwa ntchito kwambiri ngati zinthu zopakira zakudya zosiyanasiyana, mankhwala, feteleza wa mankhwala, zinthu zamafakitale ndi filimu yaulimi. Ikhozanso kutulutsidwa mu filimu yophatikizika yopakira zinthu zolemera.
(2) zinthu zopanda kanthu za polyethylene: mphamvu ya polyethylene yochuluka kwambiri ndi yokwera, yoyenera zinthu zopanda kanthu. Ikhoza kuponyedwa m'mabotolo, migolo, zitini, matanki ndi zidebe zina. Kapena poyika mu thanki ya thanki ndi thanki yosungiramo zinthu ndi zidebe zina zazikulu.
(3) chitoliro cha polyethylene ndi mbale ndizoyenera kuyikidwa pansi pa nthaka, matebulo ndi zipangizo zomangira
(4) ulusi wa polyethylene: ungagwiritsidwe ntchito ngati ma vesti osapsa zipolopolo. Zipangizo zopangira zinthu zogwiritsidwa ntchito m'magalimoto ndi m'madzi.
(5) ulusi wa polyethylene wopangira silika wa bristle, ulusi wa silika wathyathyathya kapena ulusi wa filimu, womwe umagwiritsidwa ntchito popanga chingwe, nsalu zosefera, nsalu yolongedza ndi zina zotero.
(6) Polyethylene yosakaniza: Yosakaniza yopangidwa ndi jekeseni yopangira zinthu imaphatikizapo mitundu yosiyanasiyana ya tsiku ndi tsiku, maluwa opangidwa, mabokosi osinthira, ziwiya zazing'ono, zida za njinga ndi thirakitala, zomwe zimagwiritsidwa ntchito popanga zigawo za kapangidwe kake.
Kulongedzako kuli m'matumba apulasitiki olemera makilogalamu 25, omwe amatha kunyamulidwa ndi sitima kapena panyanja ndikusungidwa m'nyumba yosungiramo zinthu youma.
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