Naqshadaynta Qaacidada ee MCA iyo Aluminium Hypophosphite (AHP) ee Dahaarka Kala-soocidda si loogu daadiyo ololka

Naqshadaynta Qaacidada ee MCA iyo Aluminium Hypophosphite (AHP) ee Dahaarka Kala-soocidda si loogu daadiyo ololka

Iyada oo ku saleysan shuruudaha gaarka ah ee isticmaalaha ee dahaarka kala-soocidda ololka-celiya, sifooyinkaMelamine Cyanurate (MCA)iyoAluminium Hypophosphite (AHP)waxaa loo falanqeeyaa sida soo socota:

1. U hoggaansanaanta Nidaamyada Slurry

• MCA:
• Nidaamyada biyaha:Waxay u baahan tahay wax ka beddelka dusha sare (tusaale ahaan, wakiilada isku xidhka silane ama surfactants) si loo hagaajiyo kala firdhinta; haddii kale, isku-soo-ururintu way dhici kartaa.
• Nidaamyada NMP:Waxay muujin kartaa barar yar oo ku jira dareerayaasha cidhifka (lagu taliyay: heerka bararka tijaabada ka dib 7-maalmood oo lagu dhex geliyo).
• AHP:
• Nidaamyada biyaha:Kala firdhis wanaagsan, laakiin pH waa in la xakameeyaa (xaaladaha aashitada leh waxay sababi karaan hydrolysis).
• Nidaamyada NMP:Xasillooni kiimiko oo sareysa oo leh khatar barar yar.
  Gunaanad:AHP waxay muujinaysaa iswaafajin wanaagsan, halka MCA ay u baahan tahay wax ka beddel.

2. Cabbirka walxaha iyo Habka Dahaarka La Qabsiga

• MCA:
• D50-kii asalka ahaa: ~1–2 μm; waxay u baahan tahay shiidid (tusaale ahaan, shiididda ciidda) si loo yareeyo cabbirka walxaha, laakiin waxay dhaawici kartaa qaab-dhismeedkeeda lakabka leh, taasoo saameynaysa hufnaanta ka hortagga dabka.
• Isku mid ahaanshaha ka dib shiididu waa in la xaqiijiyaa (kormeerka SEM).
• AHP:
• D50-kii Asalka ahaa: Caadi ahaan ≤5 μm; shiidi ilaa D50 0.5 μm/D90 1 μm waa la gaari karaa (shiidi xad-dhaaf ah waxay sababi kartaa kor u kaca dhecaanka).
  Gunaanad:MCA waxay leedahay la qabsi cabbir walax oo wanaagsan oo leh khatar yar oo habka ah.

3. Adkeysiga iyo Adkeysiga Xabagta

• MCA:
• Kala-goysyada hoose waxay keenaan isku-dhejin liidata oo leh filimada kala-soocidda PE/PP; waxay u baahan tahay 5-10% isku-xidhka acrylic-ka ku salaysan (tusaale ahaan, PVDF-HFP).
• Isku-dhafka is-xoqidda sare wuxuu u baahan karaa in lagu daro 0.5–1% nano-SiO₂ si loo hagaajiyo iska caabbinta xirashada.
• AHP:
• Kooxaha dusha sare ee hydroxyl waxay sameeyaan xidhmo haydarojiin ah oo leh kala-soocidda, taasoo hagaajinaysa dhegdheg, laakiin 3-5% xidhmooyinka polyurethane ayaa weli loo baahan yahay.
• Adkaanta sare (Mohs ~ 3) waxay sababi kartaa daadashada qaybaha yaryar marka ay isku dhacaan muddo dheer (waxay u baahan tahay tijaabo wareeg ah).
  Gunaanad:AHP waxay bixisaa waxqabad guud oo ka wanaagsan laakiin waxay u baahan tahay hagaajinta xidhka.

4. Astaamaha Xasiloonida Kulaylka iyo Kala-baxa

• MCA:
• Heerkulka kala-baxa: 260–310°C; ma dhalin karo gaas 120–150°C, taasoo laga yaabo inay ku guuldareysato inay xakameyso kulaylka ka baxaya.
• AHP:
• Heerkulka kala-baxa: 280–310°C, sidoo kale kuma filna soo saarista gaaska heerkulka hooseeya.
  Arrinta Muhiimka ah:Labaduba waxay ka baxaan meel ka sarreysa heerka bartilmaameedka (120–150°C).Xalalka:
• Soo bandhig kuwa isku-dhafka heerkulka hooseeya (tusaale ahaan, fosfooraska cas ee microencapsulated, kala duwanaanshaha kala-goynta: 150–200°C) ama ammonium polyphosphate oo wax laga beddelay (APP, oo lagu dahaadhay si loo hagaajiyo kala-goynta ilaa 140–180°C).
• NaqshadeeIsku-darka MCA/APP (saamiga 6:4)si loo isticmaalo soo saarista gaaska heerkulka hooseeya ee APP + joojinta ololka wejiga gaaska ee MCA.

5. Iska caabbinta Korontada iyo Daxalka

• MCA:
• Melamine-ka aan lahayn wax koronto ah, laakiin aan lahayn wax haraaga ah (daahir ahaan ≥99.5% ayaa loo baahan yahay) ayaa kicin kara kala-baxa elektroolajiyada.
• AHP:
• Wasakhda aashitada leh (tusaale ahaan, H₃PO₂) waa in la yareeyaa (tijaabada ICP: ayoonnada birta ≤10 ppm) si looga fogaado in la dedejiyo biyo-soo-saarista LiPF₆.
  Gunaanad:Labaduba waxay u baahan yihiin nadiifin sare (≥99%), laakiin MCA way fududahay in la nadiifiyo.

Soo jeedinta Xalka Dhammaystiran

1. Xulashada Aasaasiga ah ee Ka-hortagga Ololka:

• La doorbidayo:AHP (isku-darka/isku-dhejinta dheelitiran) + isku-darka heerkulka hooseeya (tusaale ahaan, 5% fosfooraska cas ee microencapsulated).
• Beddel:MCA wax laga beddelay (carboxyl-lagu rakibay si loogu kala firdhiyo biyaha) + Isku-dubaridka APP-ga.

1. Hagaajinta Habka:

• Caanaha looska:AHP (90%) + xidhaha polyurethane (7%) + wakiilka qoynta (BYK-346, 0.5%) + defoamer (2%).
• Xuduudaha shiidi:Warshadda ciidda oo leh kuusha ZrO₂ ee 0.3 mm, 2000 rpm, 2 saacadood (bartilmaameed D90 ≤1 μm).

1. Imtixaanada Xaqiijinta:

• Kala daadashada kulaylka:TGA (miisaanka oo yaraada <1% 120°C/2 saac; wax soo saarka gaaska 150°C/30 daqiiqo iyada oo loo marayo GC-MS).
• Xasiloonida elektaroonigga ah:Daawashada SEM ka dib 30-maalmood oo lagu dhex geliyay 1M LiPF₆ EC/DMC heerkul ah 60°C.

Talo soo jeedintii ugu dambeysay

MCA iyo AHP kaligood ma buuxiyaan dhammaan shuruudaha.nidaamka isku-dhafka ahwaxaa lagu talinayaa:

• AHP (matrix)+Fosfooraska cas ee microencruated (soo-saare gaas oo heerkul hooseeya)+nano-SiO2₂(iska caabbinta abrasion).
• Ku dar resin biyood oo leh dhegdheg sare (tusaale ahaan, emulsion-ka isku-dhafka ah ee acrylic-epoxy) oo hagaaji wax-ka-beddelka dusha sare si loo helo xasilloonida cabbirka/fididda walxaha.
  Baaritaan dheeraad ahwaxaa loo baahan yahay si loo xaqiijiyo isku-dhafka kulaylka-elektrokiimikada.