Tsarin Maganin Rage Wuta Mai Nazari don Manne Mai Tsabtace Thermosetting Acrylic
Domin biyan buƙatun hana harshen wuta na UL94 V0 don manne acrylic na thermosetting, idan aka yi la'akari da halayen masu hana harshen wuta da ke akwai da kuma takamaiman tsarin thermosetting, an gabatar da waɗannan ingantattun tsari da mahimman bincike:
I. Ka'idojin Tsarin Tsarin Tsarawa da Bukatun Tsarin Saiti
- Dole ne ya dace da zafin jiki na bushewa (yawanci 120-180°C)
- Dole ne masu hana harshen wuta su jure wa yanayin zafi mai yawa (guji gazawar ruɓewa)
- Tabbatar da kwanciyar hankali a cikin tsarin haɗin gwiwa mai yawa
- Daidaita ƙarfin injina bayan warkarwa da ingancin jinkirin wuta
II. Tsarin Tsarin Haɗakar Wuta Mai Haɗaka
Ayyukan Masu Hana Wutar Lantarki & Dacewar Thermoset
| Mai hana harshen wuta | Babban Matsayin | Daidaitawar Thermoset | Ana ba da shawarar lodawa |
|---|---|---|---|
| ATH mai kyau sosai | Babban FR: Rashin ruwa a cikin endothermic, narkewar iskar gas | Yana buƙatar gyaran saman (anti-agglomeration) | ≤35% (lodawa da yawa yana rage haɗin gwiwa) |
| Aluminum hypophosphite | Mai haɗa kai: Mai haɗa kai, mai tattara abubuwa masu tsattsauran ra'ayi (PO·) | Zafin da aka rage ya wuce 300°C, ya dace da warkewa | 8–12% |
| Zinc borate | Mai ƙara ƙarfin char: Yana samar da shinge mai kama da gilashi, yana rage hayaki | Yana aiki tare da ATH (Al-BO char) | 5–8% |
| MCA (melamine cyanurate) | FR na Gas: Yana sakin NH₃, yana hana ƙonewa | Zafin Ragewa. 250–300°C (zafin warkewa <250°C) | 3–5% |
III. Tsarin da aka ba da shawarar (Nauyi%)
Jagororin Sarrafa Kayan Aiki
| Bangaren | Rabon | Bayanan Sarrafa Maɓalli |
|---|---|---|
| Resin acrylic na Thermoset | Kashi 45–50% | Nau'in ƙarancin ɗanko (misali, epoxy acrylate) don ɗaukar babban cika |
| ATH da aka gyara a saman (D50 <5µm) | 25–30% | An riga an yi masa magani da KH-550 silane |
| Aluminum hypophosphite | Kashi 10–12% | An riga an haɗa shi da ATH, an ƙara shi a cikin rukuni-rukuni |
| Zinc borate | 6–8% | An ƙara shi da MCA; a guji lalacewar gashi mai yawa |
| MCA | 4–5% | Haɗawa mai ƙarancin gudu a matakin ƙarshe (<250°C) |
| Mai watsawa (BYK-2152 + PE wax) | 1.5–2% | Tabbatar da watsawar cikawa iri ɗaya |
| Wakilin haɗin gwiwa (KH-550) | 1% | An riga an yi masa magani a kan ATH/hypophosphite |
| Maganin warkarwa (BPO) | 1–2% | Mai kunna zafi mai ƙarancin zafi don warkarwa cikin sauri |
| Maganin hana sanyi (Aerosil R202) | 0.5% | Maganin hana zubar jini na Thixotropic |
IV. Muhimman Sarrafa Tsarin Aiki
1. Tsarin Watsawa
- Kafin a fara magani: ATH da hypophosphite an jika su a cikin maganin 5% KH-550/ethanol (busarwa awanni 2, 80°C)
- Jerin hadawa:
- Guduro + mai warwatsewa → Haɗawa mai ƙarancin gudu → Ƙara ATH/hypophosphite da aka gyara → Watsawa mai saurin gudu (2500 rpm, minti 20) → Ƙara zinc borate/MCA → Haɗawa mai ƙarancin gudu (guji lalata MCA)
- Kayan aiki: Injin haɗakar taurari (na'urar cire iska) ko injin niƙa mai naɗewa uku (don foda mai ultrafine)
2. Inganta Gyaran Jiki
- Matsewar mataki: 80°C/h 1 (gel kafin amfani) → 140°C/h 2 (bayan an gama amfani da shi, a guji ruɓewar MCA)
- Tsarin matsi: 0.5–1 MPa don hana cikawa ya tsaya
3. Tsarin Haɗaka
- ATH + Hypophosphite: Yana samar da AlPO₄-ƙarfafa char yayin da yake kawar da tsattsauran ra'ayi (PO·)
- Zinc borate + MCA: Bangaren gas mai ƙarfi (NH₃ dilution + Layer mai narkewa na gilashi)
V. Dabaru na Gyara Aiki
Matsalolin da Aka Fi Soma Yi da Mafita
| Batun | Tushen Dalilin | Mafita |
|---|---|---|
| Wutar lantarki mai ɗigowa | Ƙananan danko na narkewa | Ƙara MCA zuwa 5% + hypophosphite zuwa 12%, ko ƙara 0.5% PTFE micropowder |
| Ragewar bayan warkewa | Loda ATH da ya wuce kima | Rage ATH zuwa 25% + 5% nano-CaCO₃ (ƙarfafawa) |
| Rufe ajiya | Rashin kyawun thixotropy | Ƙara silica zuwa 0.8% ko canza zuwa BYK-410 |
| LOI <28% | Rashin isasshen lokacin iskar gas FR | Ƙara 2% jan phosphorus mai rufi ko 1% nano-BN |
VI. Ma'aunin Tabbatarwa
- UL94 V0: Samfuran 3.2 mm, jimlar lokacin harshen wuta <50 s (babu kunna auduga)
- LOI ≥30% (iyakar tsaro)
- ragowar TGA>25% (800°C, N₂)
- Daidaiton injina: Ƙarfin tauri > 8 MPa, ƙarfin yankewa > 6 MPa
Muhimman Abubuwan Da Ake Ɗauka
- Yana cimma ƙimar V0 yayin da yake riƙe da ingancin injina.
- An ba da shawarar a yi amfani da ƙananan gwaje-gwaje (50g) kafin a yi amfani da su.
- Don ƙarin aiki: Ana iya ƙara kashi 2–3% na abubuwan da aka samo daga DOPO (misali, phosphaphenanthrene).
Wannan tsari yana tabbatar da bin ƙa'idodi masu tsauri na hana harshen wuta yayin da yake inganta iya sarrafawa da aikin amfani da shi a ƙarshe.
Lokacin Saƙo: Yuli-01-2025
