Tlhahiso ea Halogen-Free Flame Retardant and Processing Technology bakeng sa Epoxy Resin
Moreki o batlana le tikoloho, e se nang halogen, le e thibelang malakabe e matla-metal-free e loketseng resin ea epoxy e nang le anhydride therapy system, e hlokang hore UL94-V0 e latele. Mokelikeli o folisang e tlameha ho ba moemeli oa mocheso o phahameng oa epoxy o nang le Tg e ka holimo ho 125 ° C, e hlokang phekolo ea mocheso ho 85-120 ° C le ho itšoara butle mocheso oa kamore. Ka tlase ke tlhahiso e felletseng joalo ka ha moreki a e kopile.
I. Lelakabe Retardant Foromo System
1. Setsi sa Core Flame Retardant: Phosphorus-Nitrogen Synergy
Lelakabe la Boitsebiso ba Lelakabe la Boitsebiso
| Lelakabe le Retardant | Mokhoa | Recommended Loading | Litlhaloso |
|---|---|---|---|
| Hypophosphite ea aluminium | Condensed-phase flame retardancy, e etsa aluminium phosphate char layer | 10–15% | E thibelang lelakabe la mantlha, mocheso oa ho bola. >300°C |
| Ammonium polyphosphate (APP) | Intumescent flame retadancy, synergizes le aluminium hypophosphite | 5–10% | APP e hananang le asiti ea hlokahala |
| Melamine cyanrate (MCA) | Mohloli oa naetrojene, o matlafatsa synergy ea phosphorus, o hatella mosi | 3–5% | E fokotsa ho rotha |
2. Thuso ea Flame Retardants le Synergists
Letlapa la Boitsebiso ba Flame Retardants
| Lelakabe le Retardant | Mokhoa | Recommended Loading | Litlhaloso |
|---|---|---|---|
| Zinc borate | E khothalletsa sebopeho sa char, e hatella khanya e ka morao | 2–5% | Chelete e feteletseng e ka lieha ho fola |
| Aluminium hydroxide e ntle | Pholiso ea Endothermic, khatello ea mosi | 5–8% | Laola ho kenya (ho qoba ho fokotsa Tg) |
3. Tlhahiso ea Mohlala (Total Loading: 20–30%)
Motheo oa Foromo (Ho Amana le Kakaretso ea Resin Content)
| Karolo | Litaba (tse amanang le Resin) |
|---|---|
| Hypophosphite ea aluminium | 12% |
| APP | 8% |
| MCA | 4% |
| Zinc borate | 3% |
| Aluminium hydroxide | 5% |
| Total Loading | 32% (e ka feto-fetoha ho 25-30%) |
II. Mehato ea Bohlokoa ea Ts'ebetso
1. Ho kopanya le ho hasana
A. Phekolo ea Pele:
- Dry aluminium hypophosphite, APP, le MCA ho 80 ° C bakeng sa lihora tsa 2 (e thibela ho kenngoa ha mongobo).
- Tšoara li-inorganic fillers (aluminium hydroxide, zinki borate) ka silane coupling agent (mohlala, KH-550).
B. Ho Kopanya Tatelano:
- Epoxy resin + Flame retardants (60°C, hlohlelletsa 1h)
- Eketsa ntho e phekolang anhydride (boloka mocheso o ka tlase ho 80 ° C)
- Vacuum degassing (-0.095 MPa, 30 min)
2. Mokhoa oa ho phekola
Mohato oa ho Folisa (E leka-lekanya botsitso bo thibelang malakabe le Tg e phahameng):
- 85°C / 2h (ho qala butle, ho fokotsa li-bubble)
- 120°C / 2h (e netefatsa karabelo e felletseng ea anhydride)
- 150°C / 1h (e eketsa bongata ba khokahanyo, Tg>125°C)
3. Lintlha tsa Sehlooho
- Taolo ea viscosity: Haeba viscosity e phahame haholo, eketsa 5% reactive epoxy diluent (mohlala, AGE).
- Ho lieha ho phekola: Sebelisa methylhexahydrophthalic anhydride (MeHHPA) kapa eketsa 0.2% 2-ethyl-4-methylimidazole (e fokotsa ho arabela mocheso oa kamore).
III. Netefatso ya Tshebetso & Tokiso
1. Ho Tateha ha Lelakabe:
- Teko ea UL94 V0 (botenya ba 1.6mm): Netefatsa nako ea ho chesa <10 sec, ha ho rotha.
- Haeba e hloleha: Eketsa aluminium hypophosphite (+3%) kapa APP (+2%).
2. Ts'ebetso ea Thermal:
- Teko ea DSC bakeng sa Tg: Haeba Tg <125 ° C, fokotsa aluminium hydroxide (e theola Tg ka lebaka la phello ea endothermic).
3. Thepa ea Mechini:
- Haeba matla a flexural a theoha, eketsa 1-2% nano-silica bakeng sa ho matlafatsa.
IV. Mathata le Litharollo tse ka 'nang tsa etsahala
Letlapa la Mathata le Litharollo tsa Lelakabe
| Hlahisa | Lebaka | Tharollo |
|---|---|---|
| Pheko e sa phethahalang | Ho monya mongobo kapa ho kena-kenana le pH ho tsoa ho li-flame retardants | Li-filler tse omisitsoeng pele, sebelisa APP e hananang le acid |
| Phallo e mpe ea resin | Ho kenya li-filler ho feta tekano | Fokotsa aluminium hydroxide ho 3% kapa eketsa mokelikeli |
| Ho hloleha ha UL94 | PN synergy e sa lekaneng | Eketsa MCA (ho isa ho 6%) kapa aluminium hypophosphite (ho isa ho 15%) |
V. Moetso o Mong (Haeba o Hlokahala)
Fetola karolo ea APP ka tse nkiloeng ho DOPO (mohlala, DOPO-HQ):
- 8% DOPO-HQ + 10% aluminium hypophosphite e fokotsa ho jara kakaretso (~ 18%) ha e ntse e boloka ts'ebetso.
Motsoako ona o leka-lekanya ho lieha ha lelakabe, polokeho ea tikoloho, le ts'ebetso e phahameng ea mocheso. Liteko tse nyane (500g) li khothaletsoa pele ho tlhahiso e felletseng.
More info., pls contact lucy@taifeng-fr.com
Nako ea poso: Jul-25-2025
