Tixraaca Flame-Retardant Formulation for Thermosetting Acrylic Adhesive
Si loo buuxiyo shuruudaha UL94 V0 ololka-dejinta ee xabagta acrylic-ku-dajinta, iyadoo la tixgalinayo sifooyinka dab-demiska ee jira iyo sifooyinka hababka heerkulbeegga, qaabeynta soo socota ee la hagaajiyay iyo falanqaynta muhiimka ah ayaa la soo jeediyay:
I. Qaabaynta Mabaadi'da Naqshadeynta & Shuruudaha Nidaamka Heer-kulka
- Waa in uu u dhigmaa heerkulka daweynta (sida caadiga ah 120-180 ° C)
- Dab-celiyayaasha ololku waa inay u adkaystaan habaynta heerkulka sare (iska ilaali burburka burburka)
- Hubi xasilloonida kala firdhisanaanta nidaamyada is-goysyada-cufnaanta sare
- Isku dheellitir daaweynta ka dib xoogga farsamada iyo waxtarka dib u dhaca ololka
II. Naqshadeynta Nidaamka Dib-u-dejinta Ololka Isku-dhafka ah
Hawlaha Dib u Dhigista Ololka & Waafaqsanaanta Heerkulbeegga
| Ololka Retardant | Doorka aasaasiga ah | Waafaqsanaanta kulaylka | Soo dejinta lagu taliyay |
|---|---|---|---|
| ATH aad u fiican | FR ugu weyn: fuuqbaxa Endothermic, qasitaan heer gaas ah | Waxay u baahan tahay wax ka beddelka dusha sare (ka-hortagga agglomeration) | ≤35% (rarka xad dhaafka ah ayaa yareeya isku xidhka) |
| Aluminium hypophosphite | Isku-dubaridka: Char catalyst, scavenger xagjirka ah (PO ·) | Decomp heerkulka >300°C, ku habboon daawaynta | 8-12% |
| Zinc borate | Kor-u-qaadayaasha Char: Wuxuu sameeyaa xannibaad dhalo leh, wuxuu yareeyaa qiiqa | Waxay ku biirtay ATH (Al-BO char) | 5-8% |
| MCA (Melamine cyanurate) | Gaas-wajiga FR: Wuxuu sii daayaa NH₃, wuxuu joojiyaa gubashada | Decomp heerkulka 250-300C (kuleylka bogsashada <250C) | 3-5% |
III. Habka lagu taliyay (Miisaan %)
Tilmaamaha Habaynta Qaybaha
| Qayb | Saamiga | Qoraallada Habraaca Muhiimka ah |
|---|---|---|
| Heerkulbeeg akril ah | 45-50% | Nooca viscosity-hooseeya (tusaale, epoxy acrylate) ee buuxinta sare |
| ATH oo dusha sare laga beddelay (D50 <5µm) | 25-30% | Horay loogu daaweeyay KH-550 silane |
| Aluminium hypophosphite | 10-12% | Horay loogu daray ATH, oo lagu daray qaybo |
| Zinc borate | 6-8% | Waxaa lagu daray MCA; iska ilaali nabaad-guurka sareeyo |
| MCA | 4-5% | Isku darka heerka dambe ee xawaaraha hooseeya (<250°C) |
| Kala firdhiya (BYK-2152 + PE wax) | 1.5-2% | Waxay xaqiijisaa kala firdhisanaanta buuxinta labbiska |
| Wakiilka isku xirka (KH-550) | 1% | Horay loogu daaweeyay ATH/hypophosphite |
| Wakiilka daaweynta (BPO) | 1-2% | Dhaqdhaqaaqa kuleyl hoose ee daawaynta degdega ah |
| Wakiilka-dejinta (Aerosil R202) | 0.5% | Thixotropic anti-sedimentation |
IV. Xakamaynta Hanaanka Halis ah
1. Geedi socodka fidinta
- Daawaynta kahor: ATH & hypophosphite oo lagu qooyay 5% KH-550/ethanol (2h, 80°C qalajin)
- Isku dhafka isku dhafka:
- Resin + kala firdhiya → Isku darka xawaare hooseeya → Ku dar ATH/hypophosphite la beddelay
- Qalabka: Isku-darka Planetary (vacuum degassing) ama warshad saddex duub ah (loogu talagalay budada ultrafine)
2. Daawaynta Hagaajinta
- Talabada daawaynta: 80°C/1saac (jeel ka hor) → 140°C/2h (daawaynta ka dib, iska ilaali burburka MCA)
- Xakamaynta cadaadiska: 0.5-1 MPa si looga hortago dejinta buuxinta
3. Hababka isku-dhafan
- ATH + Hypophosphite: Waxay samaysaa alPO₄ char la xoojiyay iyadoo xag-jiriinta (PO·)
- Zinc borate + MCA: Gaaska-adag ee xannibaadda laba-geesoodka ah (NH₃ milil + lakab dhalo dhalaalaysa)
V. Xeeladaha Dajinta Waxqabadka
Arrimaha Guud & Xalka
| Arrin | Sababta xididka | Xalka |
|---|---|---|
| Shiddada da'da | Neefsashada dhalaalaysa oo hooseeya | Ku kordhi MCA ilaa 5% + hypophosphite ilaa 12%, ama ku dar 0.5% PTFE micropowder |
| Jajabka daawaynta ka dib | Culayska ATH ee xad dhaafka ah | Iska yaree ATH ilaa 25% + 5% nano-CaCO₃ (adkeynta) |
| Kala saarida kaydinta | thixotropy liidata | Kordhi silica ilaa 0.8% ama u beddel BYK-410 |
| LOI <28% | Waji gaas aan ku filnayn FR | Ku dar 2% fosfooraska cas ee dahaarka leh ama 1% nano-BN |
VI. Qiyaasaha Xaqiijinta
- UL94 V0: 3.2mm muunado, wadarta wakhtiga ololka <50 s (aan shidnayn suuf)
- LOI ≥30% (margin badqabka)
- Hadhaaga TGA>25% (800°C, N₂)
- Dheelitirka makaanikada: Xoog xajin> 8 MPa, xoog xiirid> 6 MPa
Qaadashada Furaha
- Wuxuu gaaraa qiimeynta V0 isagoo ilaalinaya daacadnimada farsamada.
- Tijaabooyin yaryar (50g) ayaa lagu taliyay ka hor inta aan la miisaamin.
- Waxqabadka sare: 2-3% DOPO derivatives (tusaale, phosphaphenanthrene) ayaa lagu dari karaa.
Habkani waxa uu hubinayaa u hogaansanaanta heerarka adag ee ololka iyada oo la wanaajinayo habsocodka iyo waxqabadka isticmaalka dhamaadka.
Waqtiga boostada: Jul-01-2025
