Fa'asinoga Fua'upu Fa'asa'o-Afi mo le Fa'apipi'i Acrylic Thermosetting
Ina ia faʻamalieina manaʻoga UL94 V0 mo le faʻapipiʻiina o mea faʻapipiʻi faʻapipiʻi, mafaufau i uiga o loʻo i ai nei afi mumu ma faʻapitoa o faiga faʻafefeteina, o loʻo tuʻuina atu le faʻatulagaga sili ona lelei ma suʻesuʻega autu:
I. Fa'avae Fuafuaga Fa'avae & Mana'oga Fa'atonu
- E tatau ona fetaui ma le vevela o le fofo (e masani lava 120–180°C)
- E tatau ona tatalia le fa'aogaina o le vevela (aloese mai le pala)
- Faʻamautinoa le mautu o le taʻape i faiga faʻapipiʻi-maualuga maualuga
- Fa'apaleni le malosi fa'ainisinia pe a mae'a fa'amalologa ma le fa'agasologa o le mu
II. Synergistic Flame-Retardant System Design
Galuega Fa'amumu & Feso'ota'i Temoseti
| Fa'amumu | Matafaioi Muamua | Thermoset Fegalegaleaiga | Fautuaina le utaina |
|---|---|---|---|
| ATH sili ona lelei | Autu FR: Endothermic dehydration, dilution kasa | Mana'omia suiga i luga ole laiga (anti-agglomeration) | ≤35% (o le tele o uta e faʻaitiitia ai fesoʻotaʻiga) |
| Alumini hypophosphite | Synergist: Char catalyst, scavenger radical (PO·) | Decomp. temp. >300°C, talafeagai mo le fofo | 8–12% |
| Zinc borate | Char enhancer: Fausia pa puipui tioata, fa'aitiitia le asu | Fa'atasi ma le ATH (Al-BO char) | 5–8% |
| MCA (Melamine cyanurate) | Vaega kasa FR: Fa'asa'oloto le NH₃, fa'alavelave le mu | Decomp. temp. 250–300°C (vevela vevela. <250°C) | 3–5% |
III. Fautuaina Fausia (Mamafa%)
Fa'asologa o Fa'asologa o Vaega
| Vaega | fua faatatau | Fa'amatalaga Fa'agaioiga Autu |
|---|---|---|
| Thermoset acrylic resini | 45–50% | Ituaiga viscosity maualalo (fa'ata'ita'iga, epoxy acrylate) mo le fa'atumu maualuga o uta |
| ATH ua suia i luga (D50 <5µm) | 25–30% | Na muaʻi togafitia ile KH-550 silane |
| Alumini hypophosphite | 10–12% | Muamua faʻafefiloi ma le ATH, faʻaopoopo i vaega |
| Zinc borate | 6–8% | Fa'aopoopo i le MCA; aloese mai le fa'aleagaina maualuga |
| MCA | 4–5% | Fa'afefiloiga maualalo-saoasaoa tuai-tulaga (<250°C) |
| Fa'ata'ape (BYK-2152 + PE wax) | 1.5–2% | Faʻamautinoa le faʻasalalauina o mea faʻatumu tutusa |
| So'o fa'atasi (KH-550) | 1% | Togafitiga muamua ile ATH/hypophosphite |
| Sui fa'amalolo (BPO) | 1–2% | Fa'ato'a maualalo le vevela mo le fa'amalolo vave |
| So'o fa'amautu (Aerosil R202) | 0.5% | Thixotropic anti-sedimentation |
IV. Fa'atonuga Fa'atonuga
1. Fa'asologa o Fa'asalalauga
- Togafitiga muamua: ATH & hypophosphite fa'asusu ile 5% KH-550/ vaifofo ethanol (2h, 80°C fa'amago)
- Fa'asologa fa'afefiloi:
- Resin + dispersant → Faʻafefiloi le saosaoa → Faʻaopoopo le ATH/hypophosphite ua suia → Faʻasalalauga maualuga (2500 rpm, 20 min) → Faʻaopoopo le zinc borate/MCA → Faʻafefiloi le saosaoa (aloese mai le faʻaleagaina o le MCA)
- Meafaigaluega: Mea fa'afefiloi a le paneta (vacuum degassing) po'o le tolu-lo'a ili (mo pauta ultrafine)
2. Fa'amalologa Fa'atonu
- Laasaga fa'amaloloina: 80°C/1h (mua'i-gel) → 140°C/2h (pe a uma le fofo, aloese mai le pala o le MCA)
- Puleaina o le mamafa: 0.5–1 MPa e taofia ai le fa'amauina o mea fa'atumu
3. Faiga Fa'atasi
- ATH + Hypophosphite: Fausia le AlPO₄-faʻamalosia char aʻo faʻaumatia faʻamalosi (PO·)
- Zinc borate + MCA: Kesi-malosi pa puipui lua (NH₃ dilution + mea tioata liusua)
V. Fuafuaga Fa'atulagaina o Fa'atinoga
Mataupu masani & Fofo
| Mataupu | Mafua'aga A'a | Fofo |
|---|---|---|
| Fa'amumu fa'afefe | Laititi liusuavai maualalo | Faʻateleina le MCA i le 5% + hypophosphite i le 12%, pe faʻaopopo le 0.5% PTFE micropowder |
| Fa'ato'a fa'amalologa pala | Ova le uta ATH | Fa'aitiitia le ATH i le 25% + 5% nano-CaCO₃ (fa'amalo) |
| Lafoa o le teuina | Le lelei thixotropy | Faʻateleina le silica i le 0.8% pe sui ile BYK-410 |
| LOI <28% | Le lava kesi-vaega FR | Fa'aopoopo i ai le 2% fa'apipi'i mūmū phosphorus po'o le 1% nano-BN |
VI. Fua Fa'amaonia
- UL94 V0: 3.2 mm fa'ata'ita'iga, taimi atoa mu <50 s (leai se fa'amumu ivi)
- LOI ≥30% (saogalemu pito)
- TGA toega >25% (800°C, N₂)
- Paleni faʻainisinia: Malosi faʻamalosi> 8 MPa, malosi faʻafefe> 6 MPa
Mea'ai Avea
- Ausia V0 fa'ailoga a'o fa'atumauina le sa'o fa'ainisinia.
- Fa'ata'ita'iga la'ititi (50g) fautuaina a'o le'i fa'a'ai.
- Mo fa'atinoga maualuga: 2–3% DOPO fa'atupu (eg, phosphaphenanthrene) e mafai ona fa'aopoopo.
O lenei fa'atulagaga e fa'amautinoa ai le tausisia o tulaga fa'amama fa'amumu a'o fa'asilisiliina le fa'agaioiina ma le fa'aogaina o le fa'atinoga.
Taimi meli: Iul-01-2025
