Ukwenziwa kunye neTekhnoloji yokuLungisa i-Epoxy Resin engenalo i-Halogen-Flame Retardant
Umthengi ufuna i-flame retardant enobuhlobo nokusingqongileyo, engena-halogen, kwaye engenasinyithi esinzima efanelekileyo kwi-epoxy resin enenkqubo yokucima i-anhydride, efuna ukuthotyelwa kwe-UL94-V0. I-ejenti yokucima kufuneka ibe yi-epoxy curing agent enobushushu obuphezulu ene-Tg engaphezulu kwe-125°C, efuna ukucima ubushushu kwi-85–120°C kunye nokusabela kancinci kubushushu begumbi. Apha ngezantsi kukho ifomula eneenkcukacha njengoko iceliwe ngumthengi.
I. Inkqubo Yokwenziwa Kwezinto Ezithintela Ilangatye
1. Inkqubo ethintela ilangatye engundoqo: iPhosphorus-Nitrogen Synergy
Itheyibhile yoLwazi oluBambelela ilangatye
| Ilangatye elithintelayo | Indlela yokusebenza | Ukulayisha Okucetyiswayo | Amagqabaza |
|---|---|---|---|
| I-hypophosphite ye-aluminiyam | Ukudanyaza komlilo okwisigaba esijijekileyo, kwenza umaleko we-aluminium phosphate char | 10–15% | I-premator flame retarder, iqondo lobushushu lokubola. >300°C |
| I-Ammonium polyphosphate (APP) | Ukuthintela ilangabi elingaphakathi, kuhambelana ne-aluminium hypophosphite | 5–10% | I-APP enganyangekiyo yi-asidi iyafuneka |
| I-Melamine cyanurate (MCA) | Umthombo weNitrogen, uphucula ukuhambelana kwephosphorus, uthintela umsi | 3–5% | Inciphisa ukuvuza kwamanzi |
2. Izinto ezincedisayo zokuThintela ilangatye kunye nezinto ezisebenzisanayo
Itheyibhile yoLwazi lwe-Auxiliary Flame Retardants
| Ilangatye elithintelayo | Indlela yokusebenza | Ukulayisha Okucetyiswayo | Amagqabaza |
|---|---|---|---|
| I-borate yeZinc | Ikhuthaza ukwakheka kwe-char, ithintela ukukhanya okungasemva | 2–5% | Ubuninzi obugqithisileyo bunokucothisa ukuphola |
| I-aluminium hydroxide entle | Ukupholisa i-endothermic, ukuthintela umsi | 5–8% | Lawula ukulayisha (ukuthintela ukunciphisa i-Tg) |
3. Ifomyula yoMzekelo (Ukulayisha okupheleleyo: 20–30%)
Ukwenziwa kwesiseko (Ngokuphathelele kuMxholo weResin opheleleyo)
| Icandelo | Umxholo (Onxulumene neResin) |
|---|---|
| I-hypophosphite ye-aluminiyam | 12% |
| I-APP | 8% |
| I-MCA | 4% |
| I-borate yeZinc | 3% |
| i-aluminium hydroxide | 5% |
| Isiyonke sokulayisha | 32% (inokuhlengahlengiswa ukuya kwi-25–30%) |
II. Amanyathelo Okucwangcisa Abalulekileyo
1. Ukuxuba kunye nokusasaza
A. Ngaphambi Konyango:
- I-aluminiyam eyomileyo i-hypophosphite, i-APP, kunye ne-MCA kwi-80°C kangangeeyure ezi-2 (ithintela ukufunxwa komswakama).
- Nyanga izinto ezingezizo ezingaphiliyo (i-aluminium hydroxide, i-zinc borate) nge-silane coupling agent (umz., KH-550).
B. Ulandelelwano lokuxuba:
- I-Epoxy resin + Izinto ezithintela ilangatye (60°C, xuba iyure e-1)
- Yongeza i-anhydride curing agent (gcina ubushushu obungaphantsi kwama-80°C)
- Ukukhupha igesi nge-vacuum (-0.095 MPa, imizuzu engama-30)
2. Inkqubo yokunyanga
Ukulungisa iNyathelo (Ilinganisela uzinzo oluthintela ilangatye kunye ne-Tg ephezulu):
- 85°C / 2h (ukuqalisa kancinci, kunciphisa amaqamza)
- 120°C / 2h (kuqinisekisa ukusabela okupheleleyo kwe-anhydride)
- 150°C / 1h (yonyusa uxinano lwe-crosslinking, Tg >125°C)
3. Amanqaku aphambili
- Ulawulo lwe-viscosity: Ukuba i-viscosity iphezulu kakhulu, yongeza i-5% ye-reactive epoxy diluent (umz., AGE).
- Ukucotha kokunyanga: Sebenzisa i-methylhexahydrophthalic anhydride (MeHHPA) okanye wongeze i-0.2% 2-ethyl-4-methylimidazole (inciphisa ukusabela kobushushu begumbi).
III. Ukuqinisekiswa kokusebenza kunye nohlengahlengiso
1. Ukungavumi komlilo:
- Uvavanyo lwe-UL94 V0 (ubukhulu be-1.6mm): Qinisekisa ukuba ixesha lokutshisa lingaphantsi kwemizuzwana eli-10, akukho kuvuza.
- Ukuba ayiphumeleli: Yongeza i-aluminium hypophosphite (+3%) okanye i-APP (+2%).
2. Ukusebenza kobushushu:
- Uvavanyo lwe-DSC lwe-Tg: Ukuba i-Tg ingaphantsi kwe-125°C, yehlisa i-aluminium hydroxide (yehlisa i-Tg ngenxa yempembelelo ye-endothermic).
3. Iipropati zoomatshini:
- Ukuba amandla e-flexural ehla, yongeza i-1–2% nano-silica ukuze uqinise.
IV. Iingxaki ezinokubakho kunye nezisombululo
Itheyibhile yeMiba eBandakanya ilangatye kunye neZisombululo
| Khupha | Unobangela | Isisombululo |
|---|---|---|
| Unyango olungaphelelanga | Ukufunxwa komswakama okanye ukuphazamiseka kwe-pH okuvela kwizinto ezithintela ilangabi | Izithambisi zokomisa ngaphambi kokuba zome, sebenzisa i-APP engangeni asidi |
| Ukuhamba kakuhle kwe-resin | Ukulayisha okugqithisileyo kwezalisa | Nciphisa i-aluminium hydroxide ukuya kwi-3% okanye wongeze i-diluent |
| Ukusilela kwe-UL94 | Ukudibana kwe-PN okunganelanga | Yongeza i-MCA (ukuya kwi-6%) okanye i-aluminium hypophosphite (ukuya kwi-15%) |
V. Indlela Eyenye Yokwenza (Ukuba Iyafuneka)
Tshintsha inxalenye ye-APP nge-DOPO derivatives (umz., i-DOPO-HQ):
- I-8% DOPO-HQ + 10% aluminium hypophosphite inciphisa umthwalo uwonke (~18%) ngelixa igcina ukusebenza.
Olu didi lulungelelanisa ukulibaziseka komlilo, ukhuseleko lokusingqongileyo, kunye nokusebenza kobushushu obuphezulu. Iimvavanyo ezincinci (500g) ziyacetyiswa ngaphambi kokuba kwenziwe imveliso epheleleyo.
More info., pls contact lucy@taifeng-fr.com
Ixesha leposi: Julayi-25-2025
