Kupanga ndi Kukonza Ukadaulo Wopanda Halogen Wopanda Moto wa Epoxy Resin
Kasitomala akufuna chida choteteza moto choteteza chilengedwe, chopanda halogen, komanso chopanda zitsulo zambiri choyenerera utomoni wa epoxy wokhala ndi njira yotetezera anhydride, chomwe chimafuna kutsatira UL94-V0. Chothandizira chotetezera chiyenera kukhala chotetezera kutentha kwambiri cha epoxy chokhala ndi Tg yoposa 125°C, chomwe chimafuna kuchiritsa kutentha pa 85–120°C komanso kuchitapo kanthu pang'onopang'ono kutentha kwa chipinda. Pansipa pali njira yofotokozera mwatsatanetsatane monga momwe kasitomala wapempha.
I. Dongosolo Lopangira Zoletsa Moto
1. Dongosolo Loletsa Moto Wapakati: Phosphorus-Nayitrogeni Synergy
Tebulo la Chidziwitso Choletsa Moto
| Woletsa Moto | Njira | Kukweza Koyenera | Ndemanga |
|---|---|---|---|
| Hypophosphite ya aluminiyamu | Kuchepetsa moto kwa gawo lozungulira, kumapanga aluminiyamu phosphate char layer | 10–15% | Choletsa moto chachikulu, kutentha kwa kuwonongeka. >300°C |
| Ammonium polyphosphate (APP) | Kuletsa kwa moto mkati mwa bere, kumagwirizana ndi aluminium hypophosphite | 5–10% | APP yosagwira asidi ikufunika |
| Melamine cyanurate (MCA) | Chitsime cha nayitrogeni, chimawonjezera mgwirizano wa phosphorous, komanso chimaletsa utsi | 3–5% | Amachepetsa kudontha kwa madzi |
2. Zothandizira Zoletsa Moto ndi Zogwirizanitsa
Tebulo la Chidziwitso cha Zoletsa Moto Zothandizira
| Woletsa Moto | Njira | Kukweza Koyenera | Ndemanga |
|---|---|---|---|
| Zinc borate | Amalimbikitsa kupangika kwa char, amaletsa kuwala kwa dzuwa | 2–5% | Kuchuluka kwambiri kungachedwetse kuchira |
| Hydroxide yabwino ya aluminiyamu | Kuziziritsa kwa endothermic, kuletsa utsi | 5–8% | Kuwongolera kukweza (kuti mupewe kuchepetsa Tg) |
3. Chitsanzo Chopangira (Kuyika Konse: 20–30%)
Kupanga Koyambira (Kofanana ndi Chiwerengero Chonse cha Resin)
| Chigawo | Zomwe zili mkati (zofanana ndi Resin) |
|---|---|
| Hypophosphite ya aluminiyamu | 12% |
| Pulogalamu Yogwiritsira Ntchito | 8% |
| MCA | 4% |
| Zinc borate | 3% |
| Aluminiyamu hydroxide | 5% |
| Kutsegula Konse | 32% (yosinthika kukhala 25–30%) |
II. Njira Zogwiritsira Ntchito Zinthu Zofunika
1. Kusakaniza ndi Kubalalitsa
A. Chithandizo Chisanachitike:
- Pukutani aluminium hypophosphite, APP, ndi MCA pa 80°C kwa maola awiri (zimaletsa kuyamwa kwa chinyezi).
- Thirani zinthu zosapangidwa ndi organic fillers (aluminium hydroxide, zinc borate) ndi silane coupling agent (monga, KH-550).
B. Kusakaniza Mndandanda:
- Epoxy resin + Zoletsa moto (60°C, sakanizani kwa ola limodzi)
- Onjezani mankhwala ophera anhydride (sungani kutentha <80°C)
- Kuchotsa mpweya m'malo otayira mpweya (-0.095 MPa, mphindi 30)
2. Njira Yochiritsira
Kukonza Mapazi (Kumalimbitsa kukhazikika kwa moto komanso Tg yapamwamba):
- 85°C / 2h (kuyamba pang'onopang'ono, kumachepetsa thovu)
- 120°C / 2h (kutsimikizira kuti anhydride imachitika mokwanira)
- 150°C / 1 ola (kumawonjezera kuchuluka kwa ma crosslinking, Tg >125°C)
3. Mfundo Zofunika Kwambiri
- Kulamulira kukhuthala: Ngati kukhuthala kuli kwakukulu kwambiri, onjezerani 5% ya epoxy diluent (monga AGE).
- Kuchedwa kuchira: Gwiritsani ntchito methylhexahydrophthalic anhydride (MeHHPA) kapena onjezerani 0.2% 2-ethyl-4-methylimidazole (imachepetsa kutentha kwa chipinda).
III. Kutsimikizira ndi Kusintha kwa Magwiridwe Antchito
1. Kuletsa Moto:
- Mayeso a UL94 V0 (kukhuthala kwa 1.6mm): Onetsetsani kuti nthawi yoyaka ndi yochepera masekondi 10, palibe kudontha kwa madzi.
- Ngati zalephera: Wonjezerani aluminiyamu hypophosphite (+3%) kapena APP (+2%).
2. Magwiridwe antchito a kutentha:
- Kuyesa kwa DSC kwa Tg: Ngati Tg ili pansi pa 125°C, chepetsani aluminiyamu hydroxide (imachepetsa Tg chifukwa cha endothermic effect).
3. Katundu wa Makina:
- Ngati mphamvu ya flexural itsika, onjezerani 1–2% nano-silica kuti muwonjezere mphamvu.
IV. Mavuto ndi Mayankho Omwe Angakhalepo
Nkhani Zoletsa Moto ndi Mayankho a Tebulo
| Nkhani | Chifukwa | Yankho |
|---|---|---|
| Kuchiritsa kosakwanira | Kuyamwa kwa chinyezi kapena kusokoneza pH kuchokera ku zinthu zoletsa moto | Zodzaza musanaume, gwiritsani ntchito APP yosagwira asidi |
| Kuyenda bwino kwa utomoni | Kudzaza kwambiri | Chepetsani aluminiyamu hydroxide kufika pa 3% kapena onjezerani madzi osungunuka |
| Kulephera kwa UL94 | Kusagwirizana kwa PN kosakwanira | Wonjezerani MCA (mpaka 6%) kapena aluminium hypophosphite (mpaka 15%) |
V. Njira Yopangira Mankhwala Ena (Ngati Pakufunika)
Sinthani gawo la APP ndi ma DOPO derivatives (monga, DOPO-HQ):
- 8% DOPO-HQ + 10% aluminiyamu hypophosphite imachepetsa katundu wonse (~18%) pamene ikugwira ntchito bwino.
Kuphatikiza kumeneku kumalimbitsa kuchedwa kwa moto, chitetezo cha chilengedwe, komanso magwiridwe antchito otentha kwambiri. Mayeso ang'onoang'ono (500g) amalimbikitsidwa musanapange zonse.
More info., pls contact lucy@taifeng-fr.com
Nthawi yotumizira: Julayi-25-2025
