Samaynta iyo Tiknoolajiyada Habaynta ee Halogen-ka ah ee Resin-ka Epoxy
Macmiilku wuxuu raadinayaa qalab dab-damis ah oo deegaanka u fiican, oo aan halogen lahayn, oo aan bir culus lahayn oo ku habboon resin epoxy oo leh nidaam daawayn anhydride ah, kaasoo u baahan u hoggaansanaanta UL94-V0. Wakiilka daawayntu waa inuu ahaadaa wakiil daawayn epoxy heerkul sare leh oo leh Tg ka sarreeya 125°C, oo u baahan daawayn kulayl 85–120°C iyo falcelin gaabis ah heerkulka qolka. Hoos waxaa ku qoran qaacidada faahfaahsan sida uu codsaday macmiilku.
I. Nidaamka Samaynta Qaboojiyaha Dabka
1. Nidaamka Ka-hortagga Ololka Aasaasiga ah: Isku-dhafka Fosfooraska-Nitrogen
Shaxda Macluumaadka Ka-hortagga Ololka
| Wax ka celiya ololka | Habka | Soo rarista lagu taliyay | Faallooyin |
|---|---|---|---|
| Aluminium hypophosphite | Dib-u-celinta ololka wejiga isku-dhafan, waxay samaysaa lakab phosphate aluminium ah | 10–15% | Dareeraha dabka ee aasaasiga ah, heerkulka kala-baxa. >300°C |
| Ammonium polyphosphate (APP) | Dabacsanaanta ololka ee iftiinka leh, waxay la shaqaysaa aluminium hypophosphite | 5–10% | APP u adkaysta aashitada ayaa loo baahan yahay |
| Melamine cyanurate (MCA) | Ilaha Nitrogen-ka, waxay xoojisaa isku-xidhka fosfooraska, waxayna xakameysaa qiiqa | 3–5% | Waxay yareysaa dhibicda da'aysa |
2. Waxyeelayaasha Ololka iyo kuwa Isku-xidhka
Shaxda Macluumaadka ee Ka-hortagga Ololka
| Wax ka celiya ololka | Habka | Soo rarista lagu taliyay | Faallooyin |
|---|---|---|---|
| Zinc borate | Waxay kor u qaaddaa sameynta muuqaalka, waxayna xakameysaa iftiinka dambe | 2–5% | Qadarka xad-dhaafka ah ayaa laga yaabaa inuu si gaabis ah u bogsado |
| Hydroxide aluminium ah oo fiican | Qaboojinta endothermic, xakamaynta qiiqa | 5–8% | Xakamaynta rarista (si looga fogaado dhimista Tg) |
3. Tusaalaha Qaabaynta (Wadarta Rarista: 20–30%)
Qaabaynta Saldhigga (Marka loo eego Wadarta Guud ee Waxyaabaha Resin)
| Qaybta | Tusmada (Marka loo eego Resin) |
|---|---|
| Aluminium hypophosphite | 12% |
| APP-ka | 8% |
| MCA | 4% |
| Zinc borate | 3% |
| Aluminium hydroxide | 5% |
| Wadarta Soo Rarista | 32% (la hagaajin karo ilaa 25–30%) |
II. Tallaabooyinka Habaynta Muhiimka ah
1. Isku qasidda iyo kala firdhinta
A. Daaweynta Kahor:
- Qallaji aluminium hypophosphite, APP, iyo MCA heerkul ah 80°C muddo 2 saacadood ah (waxay ka hortagtaa nuugista qoyaanka).
- Ku daawee waxyaabaha aan dabiiciga ahayn (aluminium hydroxide, zinc borate) wakiilka isku xidhka silane (tusaale ahaan, KH-550).
B. Taxanaha Isku-darka:
- Resin Epoxy + Waxyaabaha damiya ololka (60°C, walaaq 1 saac)
- Ku dar walax daawayn ah oo aan hawo lahayn (heerkulka ku hay <80°C)
- Nadiifinta faakuumka (-0.095 MPa, 30 daqiiqo)
2. Habka Daaweynta
Daaweynta Tallaabada (Waxay dheellitirtaa xasilloonida dab-damiska iyo Tg sare):
- 85°C / 2 saac (bilaabid gaabis ah, waxay yareysaa xumbo)
- 120°C / 2 saacadood (waxay hubisaa falcelinta anhydride oo dhammaystiran)
- 150°C / 1 saac (waxay kordhisaa cufnaanta isku xidhka, Tg >125°C)
3. Qoraallada Muhiimka ah
- Xakamaynta gariirka: Haddii gariirku aad u sarreeyo, ku dar 5% saliid epoxy ah oo falcelin leh (tusaale ahaan, AGE).
- Daawaynta dib u dhacday: Isticmaal methylhexahydrophthalic anhydride (MeHHPA) ama ku dar 0.2% 2-ethyl-4-methylimidazole (wuxuu yareeyaa falcelinta heerkulka qolka).
III. Xaqiijinta iyo Hagaajinta Waxqabadka
1. Dib u dhigista Ololka:
- Tijaabada UL94 V0 (dhumucda 1.6mm): Hubi in waqtiga gubashada uu ka yar yahay 10 ilbiriqsi, oo aan lahayn dhibic.
- Haddii ay ku guuldareysato: Kordhi aluminium hypophosphite (+3%) ama APP (+2%).
2. Waxqabadka Kulaylka:
- Tijaabada DSC ee Tg: Haddii Tg ka yar tahay 125°C, yaree aluminium hydroxide (hoos u dhig Tg sababtoo ah saameynta endothermic).
3. Sifooyinka Farsamada:
- Haddii xoogga laalaaban uu hoos u dhaco, ku dar 1–2% nano-silica si aad u xoojiso.
IV. Arrimaha Suurtagalka ah iyo Xalalka
Shaxda Xalalka iyo Arrimaha Ka-hortagga Ololka
| Arrinta | Sabab | Xalka |
|---|---|---|
| Daaweyn aan dhammaystirnayn | Nuugista qoyaanka ama faragelinta pH-ka ee ka timaadda aaladaha dab-damiska | Buuxiyaasha kahor qalaji, isticmaal APP u adkaysta aashitada |
| Socodka resin-ka oo liita | Buuxinta xad-dhaafka ah | Yaree aluminium hydroxide ilaa 3% ama ku dar dareere |
| UL94 oo aan shaqeynin | Isku-xidhka PN ee aan ku filnayn | Kordhi MCA (ilaa 6%) ama aluminium hypophosphite (ilaa 15%) |
V. Qaababka Kale (Haddii Loo Baahdo)
Ku beddel qayb ka mid ah APP-ka kuwa DOPO-ka ah (tusaale ahaan, DOPO-HQ):
- 8% DOPO-HQ + 10% aluminium hypophosphite ayaa yareeya rarista guud (~18%) iyadoo la ilaalinayo waxqabadka.
Isku-darkani wuxuu dheellitiraa dib-u-dhaca dabka, badbaadada deegaanka, iyo waxqabadka heerkulka sare. Tijaabooyin yaryar (500g) ayaa lagu talinayaa ka hor wax-soo-saarka buuxa.
More info., pls contact lucy@taifeng-fr.com
Waqtiga boostada: Luulyo-25-2025
