Samaynta Ololka Halogen-La'aanta ah iyo Farsamaynta Farsamada ee Xadhkaha Epoxy
Macmiilku waxa uu raadinayaa deegaan saaxiibtinimo, halogen-la'aan ah, iyo dab-damiya olol-la'aan bir culus oo ku habboon resin epoxy leh nadaamka daweynta anhydride, una baahan u hoggaansanaanta UL94-V0. Wakiilka daawayntu waa inuu noqdaa wakiilka daweynta epoxy kulaylkiisu sarreeyo oo leh Tg ka sarreeya 125°C, una baahan in kulayl lagu daweeyo 85–120°C iyo falcelin gaabis ah heerkulka qolka. Hoos waxaa ku yaal qaabeynta faahfaahsan sida uu codsaday macaamilka.
I. Nidaamka Samaynta Ololka
1. Nidaamka Dib u Celinta Ololka Muhiimka ah: Isku-dhafka Fosfooraska-Nitrogen
Shaxda Macluumaadka Ololka
| Ololka Retardant | Farsamaynta | Soo dejinta lagu taliyay | Hadallo |
|---|---|---|---|
| Aluminium hypophosphite | Dib u dhigista ololka waji-kooban, wuxuu sameeyaa lakabka char fosfate aluminium | 10-15% | Dib u dhiga holaca aasaasiga ah, heerkulka burburka. >300°C |
| Ammonium polyphosphate (APP) | Dib u dhac ku yimaadda ololka daba-galka ah, waxay la mid tahay aluminium hypophosphite | 5-10% | Acid u adkaysata APP ayaa loo baahan yahay |
| Melamine cyanurate (MCA) | Ilaha Nitrogen, waxay wanaajisaa isku-dhafka fosfooraska, waxay xakameysaa qiiqa | 3-5% | Waxa ay yaraynaysaa dhibicda |
2. Kaaliyaha Ololka Retardants iyo Isku-dubaridyada
Shaxda Macluumaadka Dib-u-dhigayaasha Ololka Kaaliyaha
| Ololka Retardant | Farsamaynta | Soo dejinta lagu taliyay | Hadallo |
|---|---|---|---|
| Zinc borate | Waxay horumarisaa samaynta char, waxay joojisaa dhalaalka ka dib | 2-5% | Qadarka xad-dhaafka ah ayaa laga yaabaa inuu yareeyo daaweynta |
| Aluminium hydroxide wanaagsan | Qaboojinta endothermic, xakamaynta qiiqa | 5-8% | Xakamee rarista (si looga fogaado dhimista Tg) |
3. Samaynta Tusaalaha (Guurtida Guud: 20-30%)
Samaynta Saldhigga (La xidhiidha Wadarta Guud ee Xabagta)
| Qayb | Waxyaabaha ay ka kooban tahay (Qaraabka Xabagta) |
|---|---|
| Aluminium hypophosphite | 12% |
| APP | 8% |
| MCA | 4% |
| Zinc borate | 3% |
| Aluminium hydroxide | 5% |
| Wadarta soo dejinta | 32% (lagu hagaajin karo 25-30%) |
II. Tillaabooyinka Habaynta Muhiimka ah
1. Isku-dhafka iyo kala-firdhinta
A. Daawaynta ka hor:
- Qallalan aluminium hypophosphite, APP, iyo MCA at 80°C ilaa 2 saacadood (waxay ka hortagtaa nuugista qoyaanka).
- Ku dawee buuxinayaasha aan noolaha lahayn (aluminium hydroxide, zinc borate) oo leh wakiilka isku xidhka silane (tusaale, KH-550).
B. Isku dhafka isku dhafka:
- Resin Epoxy + Dib u celiyaasha ololka (60°C, walaaq ilaa 1 saac)
- Ku dar wakiilka daawoyinka anhydride (ku ilaali heerkulka <80°C)
- Faakuum ka saarista (-0.095 MPa, 30 daqiiqo)
2. Habka Daawaynta
Talaabada Daawaynta (Waxay dheelitirtaa xasiloonida holac iyo Tg sare):
- 85°C/2saac (bilawga tartiib tartiib ah, waxay yaraynaysaa xumbo)
- 120°C/2saac (waxay hubisaa falcelinta anhydride oo dhamaystiran)
- 150°C/1saac (waxay kordhisaa cufnaanta isku xidhka, Tg>125°C)
3. Qoraallada Muhiimka ah
- Xakamaynta viscosity: Haddii viscosity-ku aad u sarreeyo, ku dar 5% dareere epoxy fal-celin ah (tusaale, AGE).
- Daawaynta daahday: Isticmaal methylhexahydrophthalic anhydride (MeHHPA) ama ku dar 0.2% 2-ethyl-4-methylimidazole (waxay hoos u dhigtaa falcelinta heerkulka qolka).
III. Xaqiijinta & Hagaajinta Waxqabadka
1. Dib u Dhigista Ololka:
- Tijaabada UL94 V0 ( dhumucdiisuna tahay 1.6mm): Hubi wakhtiga gubashada <10 sekan, ma jiro wax dhibicyo ah.
- Haddii ay ku guuldareysato: Kordhi aluminium hypophosphite (+3%) ama APP (+2%).
2. Waxqabadka kulaylka:
- Tijaabada DSC ee Tg: Haddii Tg <125°C, yarayso aluminium hydroxide (hoos u dhiga Tg sababtoo ah saamaynta endothermic).
3. Guryaha Makaanikada:
- Haddii xoogga dabacsanaantu hoos u dhaco, ku dar 1-2% nano-silica xoojinta.
IV. Arrimaha & Xalka suurtagalka ah
Arrimaha Dib u Dhigista Ololka & Shaxda Xalka
| Arrin | Sababta | Xalka |
|---|---|---|
| Daawaynta aan dhamaystirnayn | Nuugista qoyaanka ama faragelinta pH ee ka yimaada ololka dib u dhiga | Buuxiyeyaasha hore u engegan, isticmaal APP-ka aashitada u adkaysta |
| Socodka resin-ka oo liita | Buuxinta xad dhaafka ah | Iska yaree aluminium hydroxide ilaa 3% ama ku dar dareere |
| UL94 guuldarada | Isku-dhafka PN oo aan ku filnayn | Kordhi MCA (ilaa 6%) ama aluminium hypophosphite (ilaa 15%) |
V. Qaabka Beddelka ah (Haddii loo baahdo)
Ku beddel qayb ka mid ah APP-ka noocyada DOPO (tusaale, DOPO-HQ):
- 8% DOPO-HQ + 10% aluminium hypophosphite waxay yaraynaysaa wadarta guud ee culeyska (~ 18%) iyadoo la ilaalinayo waxqabadka.
Isku dhafkan ayaa dheellitiraya dib u dhaca dabka, badbaadada deegaanka, iyo waxqabadka heerkulka sare. Tijaabooyin yar-yar (500g) ayaa lagula talinayaa ka hor wax soo saar buuxa.
More info., pls contact lucy@taifeng-fr.com
Waqtiga boostada: Jul-25-2025
