I-Halogen-Free Flame Retardant Formulation and Processing Technology ye-Epoxy Resin
Umthengi ufuna i-environmental friendly, i-halogen-free, kunye ne-heavy-metal-free flame retardant efanelekileyo kwi-epoxy resin kunye nenkqubo yokunyanga i-anhydride, efuna ukuthotyelwa kwe-UL94-V0. I-ejenti yokunyanga kufuneka ibe yi-epoxy ephezulu yokushisa i-epoxy ephilisayo kunye ne-Tg ngaphezu kwe-125 ° C, efuna ukunyangwa kobushushu kwi-85-120 ° C kunye nokusabela okucothayo kwiqondo lokushisa. Ngezantsi kuqulunqo oluneenkcukacha njengoko kucelwe ngumthengi.
I. Inkqubo yokuqulunqa iFlame Retardant
1. Inkqubo yeNqanaba yokuTyalwa kweFlame: I-Phosphorus-Nitrogen Synergy
Itheyibhile yoLwazi lweFrime Retardant
| I-Flame Retardant | Inkqubo | Kucetyiswa ukulayisha | Amagqabantshintshi |
|---|---|---|---|
| I-aluminium hypophosphite | Ukubuyiswa komlilo wesigaba esijiyileyo, kwenza umaleko we-aluminium phosphate char | 10–15% | Ukubuyiswa komlilo okuphambili, iqondo lokushisa lokubola. > 300°C |
| I-Ammonium polyphosphate (APP) | I-Intumescent flame retardancy, idibanisa kunye ne-aluminium hypophosphite | 5–10% | I-APP ekwaziyo ukumelana ne-Acid iyafuneka |
| I-Melamine cyanrate (MCA) | Umthombo we-nitrogen, wongeza i-phosphorus synergy, ucinezela umsi | 3–5% | Yehlisa ukuvuza |
2. Abancedisi beFlame Retardants kunye neeSynergists
Itheyibhile yoLwazi lweNgcaciso yeeFlame eziNcedisayo
| I-Flame Retardant | Inkqubo | Kucetyiswa ukulayisha | Amagqabantshintshi |
|---|---|---|---|
| I-zinc borate | Ikhuthaza ukwenziwa kwe-char, icinezela ukukhanya okukhanyayo | 2–5% | Izixa ezigqithisileyo zinokucotha ukunyanga |
| I-aluminiyam hydroxide entle | Ukupholisa kwe-Endothermic, ukuthotywa komsi | 5–8% | Lawula ukulayisha (ukunqanda ukunciphisa iTg) |
3. Ukuqulunqwa koMzekelo (Itotali yokuLayishwa: 20–30%)
Ulwakhiwo lwesiseko (Ngokunxulumene neTotali yoMxholo weResin)
| Icandelo | Umxholo (ngokunxulumene neResin) |
|---|---|
| I-aluminium hypophosphite | 12% |
| APP | 8% |
| MCA | 4% |
| I-zinc borate | 3% |
| I-Aluminiyam hydroxide | 5% |
| Iyonke iLayishwa | 32% (ilungelelaniswe ukuya kuma-25–30%) |
II. Amanyathelo oLungiselelo oluPhambili
1. Ukuxuba kunye nokusasazwa
A. Unyango lwangaphambili:
- I-aluminium eyomileyo i-hypophosphite, i-APP, kunye ne-MCA kwi-80 ° C kwiiyure ze-2 (ikhusela ukufunxa umswakama).
- Nyanga izigcwalisi ezingaphiliyo (i-aluminiyam hydroxide, i-zinc borate) nge-agent edibanisa i-silane (umz., i-KH-550).
B. Ulandelelwano lokudibanisa:
- I-Epoxy resin + Iiretardants zomlilo (60°C, zixhokonxa i-1h)
- Yongeza i-anhydride ephilisa i-agent (gcina iqondo lobushushu <80°C)
- Ivacuum degassing (-0.095 MPa, 30 min)
2. Inkqubo yoNyango
Inyathelo lokuNyanga (Ilinganisa uzinzo lwe-flame retardant kunye ne-Tg ephezulu):
- 85°C / 2h (ukuqaliswa kancinane, kunciphisa amaqamza)
- 120°C / 2h (iqinisekisa ukusabela okupheleleyo kwe-anhydride)
- I-150 ° C / 1h (yandisa ukuxinana kwe-crosslinking, Tg>125 ° C)
3. Amanqaku aphambili
- Ulawulo lwe-Viscosity: Ukuba i-viscosity iphezulu kakhulu, yongeza i-5% esebenzayo ye-epoxy diluent (umzekelo, i-AGE).
- Ukunyangwa okulibazisekayo: Sebenzisa i-methylhexahydrophthalic anhydride (MeHHPA) okanye yongeza i-0.2% 2-ethyl-4-methylimidazole (inciphisa ukusabela kobushushu begumbi).
III. Ukuqinisekiswa kokuSebenza kunye noLungiso
1. UkuBamba amadangatya:
- Uvavanyo lwe-UL94 V0 (ubukhulu be-1.6mm): Qinisekisa ixesha lokutshisa <10 sec, akukho kuthontsiza.
- Ukuba ayiphumelelanga: Yandisa i-aluminium hypophosphite (+3%) okanye i-APP (+2%).
2. Ukusebenza kweThermal:
- Uvavanyo lwe-DSC lwe-Tg: Ukuba i-Tg <125 ° C, yehlisa i-aluminium hydroxide (inciphisa i-Tg ngenxa ye-endothermic effect).
3. IiPropati zoomatshini:
- Ukuba amandla e-flexural ehla, yongeza i-1-2% ye-nano-silica yokuqinisa.
IV. Imiba enokwenzeka kunye nezisombululo
Imiba eRetardant yomlilo kunye neTheyibhile yezisombululo
| Khupha | Unobangela | Isisombululo |
|---|---|---|
| Ukunyangwa okungaphelelanga | Ukufunxa ukufuma okanye uphazamiseko lwe-pH olusuka kwiiretardants zomlilo | Iifayili zangaphambili ezomileyo, sebenzisa i-APP enganyangekiyo kwi-asidi |
| Ukuhamba kakubi kwe-resin | Ukulayishwa kwesihluzi ngokugqithisileyo | Yehlisa i-aluminiyam hydroxide ukuya kwi-3% okanye udibanise i-diluent |
| Ukusilela kwe-UL94 | Intsebenziswano ye-PN enganelanga | Ukwandisa i-MCA (ukuya kwi-6%) okanye i-aluminium hypophosphite (ukuya kwi-15%) |
V. Ulwakhiwo Olunye (Ukuba Luyafuneka)
Faka indawo ye-APP nge-DOPO derivatives (umz., DOPO-HQ):
- I-8% ye-DOPO-HQ + i-10% ye-aluminium hypophosphite inciphisa ukulayisha okupheleleyo (~ 18%) ngelixa igcina ukusebenza.
Le ndibaniselwano ibhalansisa ukulibaziseka komlilo, ukhuseleko lokusingqongileyo, kunye nokusebenza kobushushu obuphezulu. Ulingo oluncinci (500g) luyacetyiswa phambi kwemveliso epheleleyo.
More info., pls contact lucy@taifeng-fr.com
Ixesha lokuposa: Jul-25-2025
