Ubuchwepheshe Bokwenza Nokucubungula Okungenalo I-Halogen-Flame Retardant ye-Epoxy Resin
Ikhasimende lifuna i-flame retardant enobungani nemvelo, engena-halogen, futhi engenansimbi enamandla efanelekile i-epoxy resin enesistimu yokwelapha i-anhydride, edinga ukuhambisana ne-UL94-V0. I-ejenti yokwelapha kumele ibe yi-epoxy curing agent eshisa kakhulu ene-Tg engaphezu kuka-125°C, edinga ukupholisa ukushisa ku-85–120°C kanye nokusabela kancane ekushiseni kwegumbi. Ngezansi kunefomula eningiliziwe njengoba iceliwe yikhasimende.
I. Uhlelo Lokwakha Oluvimbela Ilangatye
1. Uhlelo Oluvimbela Ilangabe Oluyinhloko: I-Phosphorus-Nitrogen Synergy
Ithebula Lolwazi Oluvimbela Umlilo
| Isivimbeli Somlilo | Indlela yokusebenza | Ukulayisha Okunconyiwe | Amazwi |
|---|---|---|---|
| I-hypophosphite ye-aluminium | Ukuncipha komlilo kwesigaba esijiyile, kwakha ungqimba lwe-aluminium phosphate char | 10–15% | Isivimbeli somlilo esiyinhloko, izinga lokushisa lokubola. >300°C |
| I-Ammonium polyphosphate (APP) | Ukumelana nomlilo okungaphakathi, kuhambisana ne-aluminium hypophosphite | 5–10% | Kudingeka i-APP engamelani ne-asidi |
| I-Melamine cyanurate (MCA) | Umthombo we-nitrogen, uthuthukisa ukusebenzisana kwe-phosphorus, ucindezela intuthu | 3–5% | Yehlisa ukuconsa |
2. Izinto Ezisizayo Zokulwa Nomlilo kanye Nezisebenzisanayo
Ithebula Lolwazi Lwezithibi Ezisizayo Zomlilo
| Isivimbeli Somlilo | Indlela yokusebenza | Ukulayisha Okunconyiwe | Amazwi |
|---|---|---|---|
| I-borate ye-zinc | Ikhuthaza ukwakheka kwe-char, icindezela ukukhanya kwangemuva | 2–5% | Ubuningi obukhulu bungase bunciphise ukuphola |
| I-aluminium hydroxide enhle | Ukupholisa kwe-Endothermic, ukucindezela intuthu | 5–8% | Lawula ukulayisha (ukugwema ukunciphisa i-Tg) |
3. Ukwakheka Kwesibonelo (Ukulayisha Okuphelele: 20–30%)
Ukwakheka Okuyisisekelo (Ngokuphathelene Nokuqukethwe Okuphelele Kwe-Resin)
| Ingxenye | Okuqukethwe (Okuhlobene ne-Resin) |
|---|---|
| I-hypophosphite ye-aluminium | 12% |
| Uhlelo Lokusebenza | 8% |
| I-MCA | 4% |
| I-borate ye-zinc | 3% |
| I-aluminium hydroxide | 5% |
| Inani Lokulayisha | 32% (ingashintshwa ibe ngu-25–30%) |
II. Izinyathelo Zokucubungula Okubalulekile
1. Ukuxuba Nokuhlakaza
A. Ngaphambi Kokwelashwa:
- I-aluminiyam hypophosphite eyomile, i-APP, kanye ne-MCA ku-80°C amahora ama-2 (kuvimbela ukumuncwa komswakama).
- Phatha ama-filler angaphili (i-aluminium hydroxide, i-zinc borate) nge-ejenti yokuhlanganisa i-silane (isb., i-KH-550).
B. Ukulandelana Kokuxuba:
- I-Epoxy resin + Izinto ezivimbela ilangabi (60°C, hlanganisa ihora eli-1)
- Faka i-anhydride curing agent (gcina izinga lokushisa lingaphansi kuka-80°C)
- Ukususa igesi nge-vacuum (-0.095 MPa, imizuzu engama-30)
2. Inqubo Yokwelapha
Ukwelapha Ngezinyathelo (Kulinganisa ukuzinza okubamba ilangabi kanye ne-Tg ephezulu):
- 85°C / 2h (ukuqala kancane, kunciphisa amabhamuza)
- 120°C / 2h (kuqinisekisa ukusabela okuphelele kwe-anhydride)
- 150°C / 1h (kwandisa ubuningi bokuxhumanisa, i-Tg >125°C)
3. Amanothi Ayisihluthulelo
- Ukulawula ukuthamba: Uma ukuthamba kuphakeme kakhulu, engeza i-5% ye-reactive epoxy diluent (isb., AGE).
- Ukwelashwa okulibazisekile: Sebenzisa i-methylhexahydrophthalic anhydride (MeHHPA) noma engeza i-0.2% 2-ethyl-4-methylimidazole (yehlisa ukusabela kwegumbi lokushisa).
III. Ukuqinisekiswa Kokusebenza Nokulungiswa
1. Ukumelana Nokushisa:
- Ukuhlolwa kwe-UL94 V0 (ukujiya okungu-1.6mm): Qinisekisa ukuthi isikhathi sokushisa singaphansi kwemizuzwana eyi-10, akukho ukuconsa.
- Uma kwehluleka: Khulisa i-aluminium hypophosphite (+3%) noma i-APP (+2%).
2. Ukusebenza Kokushisa:
- Ukuhlolwa kwe-DSC kwe-Tg: Uma i-Tg ingaphansi kuka-125°C, yehlisa i-aluminium hydroxide (yehlisa i-Tg ngenxa yomphumela we-endothermic).
3. Izakhiwo Zemishini:
- Uma amandla e-flexural ehla, engeza i-nano-silica engu-1–2% ukuze kuqiniswe.
IV. Izinkinga Ezingaba Khona Nezixazululo
Ithebula Lezinkinga Ezivimbela Umlilo Nezixazululo
| Inkinga | Imbangela | Isixazululo |
|---|---|---|
| Ukwelashwa okungaphelele | Ukumuncwa komswakama noma ukuphazamiseka kwe-pH okuvela ezithinti ilangabi | Ama-filler omile ngaphambi kokusebenzisa, sebenzisa i-APP engamelani ne-asidi |
| Ukugeleza kwe-resin okungekuhle | Ukulayisha okugcwele kakhulu | Yehlisa i-aluminium hydroxide ibe ngu-3% noma engeza i-diluent |
| Ukwehluleka kwe-UL94 | Ukungahlangani kahle kwe-PN | Khulisa i-MCA (kufike ku-6%) noma i-aluminium hypophosphite (kufike ku-15%) |
V. Ukwakheka Okuhlukile (Uma Kudingeka)
Faka esikhundleni ingxenye ye-APP nge-DOPO derivatives (isb., i-DOPO-HQ):
- I-8% DOPO-HQ + 10% i-aluminium hypophosphite inciphisa umthwalo ophelele (~18%) ngenkathi igcina ukusebenza kahle.
Le nhlanganisela ilinganisela ukungasebenzi kahle komlilo, ukuphepha kwemvelo, kanye nokusebenza kwezinga lokushisa eliphezulu. Kunconywa ukuhlolwa okuncane (500g) ngaphambi kokukhiqizwa okugcwele.
More info., pls contact lucy@taifeng-fr.com
Isikhathi sokuthunyelwe: Julayi-25-2025
