Sidee loo yareeyaa cufnaanta qiiqa ee dhejiska epoxy oo leh AHP iyo MCA oo dab-damiya?

Ku darista aluminium hypophosphite iyo MCA ee dhejiska epoxy waxay keentaa qiiqa qiiqa oo sareeya. Isticmaalka zinc borate si loo yareeyo cufnaanta qiiqa iyo qiiqa waa suurtogal, laakiin qaacidada jirta waxay u baahan tahay in loo hagaajiyo saamiga.

1. Habka Xakamaynta Qiiqa ee Zinc Borate

Zinc borate waa daawo wax ku ool ah oo joojisa qiiqa iyo isku-dubaridka dabka. Farsamooyinka ay leedahay waxaa ka mid ah:

• Dhiirrigelinta Samaynta Astaamaha: Waxay sameysaa lakab cufan oo char ah inta lagu jiro gubashada, waxay go'doomisaa ogsijiinta iyo kulaylka, waxayna yareysaa sii deynta gaaska guban kara.
• Ka Hortagga Qiiqa: Waxay kicisaa falcelinta isku xidhka si loo yareeyo soo saarista walxaha qiiqa, iyadoo hoos u dhigaysa cufnaanta qiiqa (gaar ahaan waxtar u leh polymers-ka sida epoxy).
• Saamaynta Wadajirka ah: Waxay xoojisaa dib-u-celinta dabka marka lagu daro walxaha ka hortagga dabka ee ku salaysan fosfooraska (tusaale ahaan, aluminium hypophosphite) iyo kuwa ka hortagga dabka ee ku salaysan nitrogen (tusaale ahaan, MCA).

2. Daawooyinka Cabbiyeyaasha Qiiqa ee Kale ama kuwa Dheeraadka ah

Si aad u sii wanaajiso xakamaynta qiiqa, tixgeli xalalka isku-dhafka ah ee soo socda:

• Isku-dhafka Molybdenum(tusaale ahaan, zinc molybdate, molybdenum trioxide): Ka waxtar badan zinc borate laakiin ka qaalisan; waxaa lagu talinayaa in lagu qaso zinc borate (tusaale ahaan, zinc borate: zinc molybdate = 2:1).
• Aluminium/Magnesium Haydrooksaydh: Waxay u baahan tahay rarid sare (20-40 phr), taas oo saameyn karta sifooyinka farsamada ee epoxy-si taxaddar leh u hagaaji.

3. Hagaajinta Qaaciddada Lagu Taliyay

Haddii aad u malaynayso in qaab-dhismeedka asalka ah uu yahayaluminium hypophosphite + MCA, halkan waxaa ah tilmaamaha hagaajinta (oo ku salaysan 100 qaybood oo ah resin epoxy):

Ikhtiyaarka 1aad: Ku darista Tooska ah ee Zinc Borate

• Aluminium hypophosphite: Ka yar 20-30 hr ilaa15-25 hr
• MCA: Ka jar 10-15 hr ilaa8-12 fiidnimo
• Zinc borate: Ku dar5-15 hr(bilow baaritaanka 10 saacadood gudahood)
• Wadarta guud ee ka hortagga ololka: Ku hay30-40 fiidnimo(ka fogow xaddi badan oo saameeya waxqabadka dhejiska).

Ikhtiyaarka 2aad: Isku-dhafka Zinc Borate + Zinc Molybdate

• Aluminium hypophosphite:15-20 hr
• MCA:5-10 hr
• Borate-ka Zinc:8-12 fiidnimo
• Zinc molybdate:4-6 saacadood
• Wadarta guud ee ka hortagga ololka:30-35 fiidnimo.

4. Halbeegyada Xaqiijinta Muhiimka ah

• Dib-u-dhaca Ololka: Gubashada toosan ee UL-94, tijaabooyinka LOI (bartilmaameedka: V-0 ama LOI >30%).
• Cufnaanta Qiiqa: Isticmaal qalabka tijaabiya cufnaanta qiiqa (tusaale ahaan, qolka qiiqa ee NBS) si aad u barbar dhigto hoos u dhaca Qiimaynta Cufnaanta Qiiqa (SDR).
• Sifooyinka Farsamada: Hubi in xoogga jiidista iyo xoogga dhegdheggu ay buuxiyaan shuruudaha ka dib marka la bogsado.
• Hawl-hawleed: Xaqiiji kala firdhinta isku midka ah ee qalabka ka hortagga dabka iyada oo aan saameyn ku yeelanayn daxalka ama waqtiga bogsashada.

5. Tixgelinno

• Xakamaynta Cabbirka Walxaha: Dooro zinc borate oo cabirkiisu yahay nano (tusaale ahaan, cabbirka walxaha <1 μm) si loo hagaajiyo kala firdhinta.
• Wax ka beddelka Dusha sareKu daawee zinc borate oo leh walxo isku xidha silane si kor loogu qaado iswaafajinta epoxy resin.
• U hoggaansanaanta Sharciyeynta: Hubi in walxaha dab-damiska ee la xushay ay buuxiyaan RoHS, REACH, iyo qawaaniin kale.

6. Tusaalaha Qaabaynta (Tixraaca)

7. Soo Koobid

• Zinc borate waa doorasho wax ku ool ah oo lagu dhimayo qiiqa qiiqa. Waxaan kugula talineynaa inaad ku darto10-15 hriyadoo si dhexdhexaad ah loo dhimayo heerka aluminiumka hypophosphite/MCA.
• Si aad u sii waddo xakamaynta qiiqa, ku dar isku-darka molybdenum (tusaale ahaan,4-6 saacadood).
• Xaqiijinta tijaabada ayaa lagama maarmaan u ah si loo dheellitiro dib-u-dhaca ololka, xakamaynta qiiqa, iyo sifooyinka farsamada.

Let me know if you’d like any refinements! Lucy@taifeng-fr.com