Qaabaynta Tixraaca ee Ka-hortagga Ololka ee loogu talagalay Koolada Acrylic-ka ee Heerkulka
Si loo daboolo shuruudaha UL94 V0 ee dab-damiska acrylic-ka ee heerkulka, iyadoo la tixgelinayo astaamaha dab-damiska ee jira iyo gaar ahaan nidaamyada heerkulka, waxaa la soo jeediyay qaacidada soo socota ee la hagaajiyay iyo falanqaynta muhiimka ah:
I. Mabaadi'da Naqshadeynta Qaabaynta iyo Shuruudaha Nidaamka Heerkulka
- Waa inay la mid noqotaa heerkulka qalajinta (caadiyan 120-180°C)
- Daawooyinka dab-damiska waa inay u adkeystaan habaynta heerkulka sare (iska ilaali cilladda kala-goynta)
- Hubi xasilloonida kala-fidinta ee nidaamyada isku-xidhka sare ee cufnaanta
- Isku dheelitir xoogga farsamada kadib daaweynta iyo hufnaanta dib u dhigista ololka
II. Naqshadeynta Nidaamka Ka-hortagga Ololka ee Isku-dhafan
Hawlaha Ka-hortagga Ololka & Iswaafajinta Heerkulka
| Wax ka celiya ololka | Doorka Aasaasiga ah | Iswaafajinta Heerkulka | Soo rarista lagu taliyay |
|---|---|---|---|
| ATH aad u fiican | FR-ga ugu muhiimsan: Fuuqbaxa endothermic, milmida wejiga gaaska | Waxay u baahan tahay wax ka beddelka dusha sare (ka hortagga isku-buufinta) | ≤35% (rarista xad-dhaafka ah waxay yareyneysaa isku-xidhka) |
| Aluminium hypophosphite | Isku-dubarid: Kataliyayaasha Char, walxaha xagjirka ah (PO·) | Heerkulka kala furfur. > 300°C, oo ku habboon in la bogsiiyo | 8–12% |
| Zinc borate | Kobciyaha Char: Waxay samaysaa caqabad muraayad ah, waxayna yareysaa qiiqa | Waxay la shaqaysaa ATH (Al-BO char) | 5–8% |
| MCA (melamine cyanurate) | Marxaladda gaaska FR: Waxay sii deysaa NH₃, waxayna joojisaa gubashada | Heerkulka kala furfur. 250–300°C (heerkulka bogsashada. <250°C) | 3–5% |
III. Qaaciddada lagu taliyay (Miisaanka%)
Tilmaamaha Habaynta Qaybaha
| Qaybta | Saamiga | Qoraallada Muhiimka ah ee Habaynta |
|---|---|---|
| Resin acrylic ah oo heerkulbeeg ah | 45–50% | Nooca viscosity-ga hooseeya (tusaale ahaan, epoxy acrylate) ee loogu talagalay buuxinta sare |
| ATH-ka dusha sare wax laga beddelay (D50 <5µm) | 25–30% | Waxaa hore loogu daaweeyay KH-550 silane |
| Aluminium hypophosphite | 10–12% | Horey loogu qasay ATH, oo lagu daray dufcado |
| Zinc borate | 6–8% | Lagu daray MCA; iska ilaali burburka xiirashada sare leh |
| MCA | 4–5% | Isku-darka xawaare hoose oo heer dambe ah (<250°C) |
| Kala firdhiya (BYK-2152 + PE wax) | 1.5–2% | Hubinta kala firdhinta buuxinta oo isku mid ah |
| Wakiilka isku xidhka (KH-550) | 1% | Hore loogu daaweeyay ATH/hypophosphite |
| Wakiilka daawaynta (BPO) | 1–2% | Firfircooni heerkul hooseeya si dhakhso leh loogu bogsado |
| Wakiilka ka hortagga degitaanka (Aerosil R202) | 0.5% | Ka-hortagga fallaaraha Thixotropic |
IV. Xakamaynta Hawsha Muhiimka ah
1. Habka Kala-fidinta
- Daawaynta kahor: ATH iyo hypophosphite oo lagu qooyay 5% xal KH-550/ethanol ah (2 saacadood, 80°C qallajin)
- Isku-darka taxanaha:
- Resin + kala firdhiye → Isku darka xawaaraha hooseeya → Ku dar ATH/hypophosphite wax laga beddelay → Kala firdhiye xawaare sare leh (2500 rpm, 20 daqiiqo) → Ku dar zinc borate/MCA → Isku darka xawaaraha hooseeya (ka fogow burburka MCA)
- Qalabka: Isku-darka meeraha (ka saarista gaasta) ama mashiinka saddex-duuban (loogu talagalay budada ultrafine)
2. Hagaajinta Daaweynta
- Daaweynta tallaabada: 80°C/1 saac (gel-ka kahor) → 140°C/2 saac (kadib daawaynta, iska ilaali kala-goynta MCA)
- Xakamaynta cadaadiska: 0.5–1 MPa si looga hortago in buuxinta la dejiyo
3. Hababka Iskaashiga
- ATH + Hypophosphite: Waxay sameysaa AlPO₄-la xoojiyay char iyadoo la baabi'inayo xagjirrada (PO·)
- Zinc borate + MCA: Xariijimo laba-geesood ah oo gaas-adag (NH₃ milmid + lakab muraayad dhalaalaysa)
V. Xeeladaha Hagaajinta Waxqabadka
Arrimaha Caadiga ah & Xalalka
| Arrinta | Sababta Asalka ah | Xalka |
|---|---|---|
| Shidista daadinta | Dheecaanka dhalaalka oo hooseeya | Ku kordhi MCA ilaa 5% + hypophosphite ilaa 12%, ama ku dar 0.5% PTFE microbude |
| Jabnaanta ka dib daaweynta | Rarista xad-dhaafka ah ee ATH | Hoos u dhig ATH ilaa 25% + 5% nano-CaCO₃ (adag) |
| Fadhiinta kaydinta | Tixotropy liita | Kordhi silica ilaa 0.8% ama u beddel BYK-410 |
| LOI <28% | FR-ga wejiga gaaska oo aan ku filnayn | Ku dar 2% fosfooraska cas ee dahaarka leh ama 1% nano-BN |
VI. Halbeegyada Xaqiijinta
- UL94 V0: muunado 3.2 mm ah, wadarta wakhtiga ololka <50 ilbiriqsi (ma jiro dab-shid cudbi ah)
- LOI ≥30% (faa'iidada badbaadada)
- Hadhaaga TGA>25% (800°C, N₂)
- Dheelitirka farsamada: Xoogga jiidista > 8 MPa, xoogga jarista > 6 MPa
Waxyaabaha Muhiimka ah ee Laga Qaadan Karo
- Waxay gaartaa qiimeynta V0 iyadoo la ilaalinayo hufnaanta farsamada.
- Tijaabooyin yaryar (50g) ayaa lagu taliyay ka hor inta aan la cabbirin.
- Si loo helo waxqabad sare: 2–3% DOPO derivatives (tusaale ahaan, phosphaphenanthrene) ayaa lagu dari karaa.
Qaaciddadani waxay hubinaysaa u hoggaansanaanta heerarka adag ee ka hortagga ololka iyadoo la wanaajinayo habka wax loo qabanayo iyo waxqabadka isticmaalka dhammaadka.
Waqtiga boostada: Luulyo-01-2025
