Halogen-Free Flame Retardant Formation and Processing Technology for Epoxy Resin
O lo'o sailia e le tagata fa'atau se mea e fa'afefe ai le si'osi'omaga, e leai se halogen, ma e leai se u'amea mamafa e fa'agata ai le mu e talafeagai mo le epoxy resin fa'atasi ai ma se faiga fa'amalolo anhydride, e mana'omia ai le tausisia o le UL94-V0. O le vailaʻau faʻamalolo e tatau ona avea ma vailaʻau faʻamaʻi epoxy maualuga ma le Tg i luga aʻe o le 125 ° C, e manaʻomia ai le vevela vevela i le 85-120 ° C ma faʻagesegese le tali i le vevela o le potu. Lalo o le faʻamatalaga auiliili e pei ona talosagaina e le tagata faʻatau.
I. Faiga Fa'asa'o Fa'asa'o
1. A'oa'o Fa'asa'o Mumu: Phosphorus-Nitrogen Synergy
Laulau Fa'amatalaga e Taofia le Mu
| Fa'amumu | Fa'ainisinia | Fautuaina le utaina | Fa'amatalaga |
|---|---|---|---|
| Alumini hypophosphite | Fa'asa'o-vaega mumu mumu, fai alumini phosphate char layer | 10–15% | Uluai mumu mumu, vevela vevela. >300°C |
| Ammonium polyphosphate (APP) | Fa'aletonu le afi, fa'atasi ma le alumini hypophosphite | 5–10% | E mana'omia le APP e tetee i le acid |
| Melamine cyanurate (MCA) | Punavai o le nitrogen, faʻaleleia le fesoʻotaʻiga o le phosphorus, taofia le asu | 3–5% | Faʻaitiitia le tafe |
2. Auxiliary Flame Retardants and Synergists
Auxiliary Flame Retardants Information Table
| Fa'amumu | Fa'ainisinia | Fautuaina le utaina | Fa'amatalaga |
|---|---|---|---|
| Zinc borate | Fa'ateleina le fa'atupuina o le char, fa'asao le susulu | 2–5% | Ole tele ole aofa'i e ono fa'agesegese ai le fofo |
| Alumini hydroxide lelei | Endothermic malulu, taofiofia le asu | 5–8% | Pulea le utaina (ia aloese mai le fa'aitiitia o Tg) |
3. Fa'ata'ita'iga Fa'atulagaina (Aofa'i Tu'uga: 20–30%)
Fa'avae Fa'avae (E fa'atatau ile Aofa'iga ole Resin Content)
| Vaega | Anotusi (Fa'atatau i Resin) |
|---|---|
| Alumini hypophosphite | 12% |
| APP | 8% |
| MCA | 4% |
| Zinc borate | 3% |
| Aluminium hydroxide | 5% |
| Aofa'i uta | 32% (fetuuna'i ile 25–30%) |
II. Laasaga Autu Fa'agaioiga
1. Faafefiloi ma Taape
A. Togafitiga Muamua:
- Fa'amamago alumini hypophosphite, APP, ma le MCA i le 80 ° C mo le 2 itula (fa'asa'o le susu).
- Togafiti mea fa'atumu (alumini hydroxide, zinc borate) fa'atasi ai ma se so'o fa'apipi'i silane (fa'ata'ita'iga, KH-550).
B. Fa'afefiloi Fa'asologa:
- Epoxy resin + Fa'amumu mu (60°C, fa'aoso mo le 1h)
- Fa'aopoopo i ai le vaila'au fa'amalo vai (tuu le vevela <80°C)
- Fa'amama le kasa (-0.095 MPa, 30 min)
2. Fa'agasologa Fa'amalolo
La'a Fa'agata (Fa'apaleni le mautu ma le maualuga Tg):
- 85°C / 2h (fa'agasolo lemu, fa'aitiitia fa'apogai)
- 120°C / 2h (faamautinoa le tali atoatoa o le anhydride)
- 150°C / 1h (fa'ateleina le tele o feso'ota'iga, Tg >125°C)
3. Fa'amatalaga Autu
- Pulea le viscosity: Afai e maualuga tele le viscosity, fa'aopoopo le 5% fa'afefete epoxy diluent (fa'ata'ita'iga, AGE).
- Fa'atuai le fofoina: Fa'aaoga le methylhexahydrophthalic anhydride (MeHHPA) po'o le fa'aopopoina o le 0.2% 2-ethyl-4-methylimidazole (fa'agesegese le tali atu i le vevela o le potu).
III. Fa'ailoga Fa'atinoga & Fetuuna'iga
1. Fa'aletonu le afi:
- Su'ega UL94 V0 (1.6mm mafiafia): Ia mautinoa le taimi mu <10 sec, leai se susu.
- Afai e le manuia: Faʻateleina le alumini hypophosphite (+3%) poʻo le APP (+2%).
2. Fa'avevela Fa'atinoga:
- Su'ega DSC mo le Tg: Afai o le Tg <125°C, fa'aitiitia le alumini hydroxide (fa'aititia le Tg ona o a'afiaga endothermic).
3. Meatotino Fa'ainisinia:
- Afai e pa'u le malosi fefiloi, fa'aopoopo le 1-2% nano-silika mo le fa'amalosi.
IV. Fa'afitauli Fa'afitauli & Fofo
Fa'afitauli Fa'amumu & Fofo Lisi
| Mataupu | Mafuaaga | Fofo |
|---|---|---|
| Fa'agata le atoatoa | Susū fa'afefete po'o le pH fa'alavelave mai le mumu mumu | Fa'atumu muamua fa'amago, fa'aoga le APP e fa'asa'o |
| Le lelei le tafe o resini | Ova le uta faatumu | Fa'aitiitia le alumini hydroxide i le 3% pe fa'aopoopo i ai le fa'afefiloi |
| UL94 toilalo | Le lava PN fa'atasi | Faʻateleina le MCA (i le 6%) poʻo le alumini hypophosphite (i le 15%) |
V. Su'i Su'ega (Pe a Manaomia)
Suia vaega ole APP ile DOPO (fa'ata'ita'iga, DOPO-HQ):
- 8% DOPO-HQ + 10% alumini hypophosphite faʻaititia le aofaʻi o uta (~ 18%) aʻo faʻatumauina le faʻatinoga.
O lenei tu'ufa'atasiga e faapaleni ai le mu, saogalemu o le si'osi'omaga, ma le fa'atinoga o le vevela maualuga. Fa'ata'ita'iga la'ititi (500g) e fautuaina a'o le'i faia fa'ato'aga.
More info., pls contact lucy@taifeng-fr.com
Taimi meli: Iul-25-2025
