Ts'ebetso ea ho qhala le ho qhalana ha li-Solid Flame Retardants ho Polyurethane AB Adhesive System.

Ts'ebetso ea ho qhala le ho qhalana ha li-Solid Flame Retardants ho Polyurethane AB Adhesive System.

Bakeng sa ho qhibiliha / ho hasana ha li-retardants tse tiileng tsa lelakabe tse kang aluminium hypophosphite (AHP), aluminium hydroxide (ATH), zinc borate, le melamine cyanurate (MCA) tsamaisong ea sekhomaretsi ea polyurethane AB, mehato ea bohlokoa e kenyelletsa ho fetisoa pele, ho hasana ka mohato, le taolo e tiileng ea mongobo. Ka tlase ke ts'ebetso e qaqileng (bakeng sa litlolo tse thibelang malakabe a mangata; tse ling li ka lokisoa ka nepo).

I. Melao-motheo ea Motheo

1. "Ho qhalana" ke ho hasana: Lintho tse thibelang lelakabe tse tiileng li tlameha ho qhalakanngoa ka mokhoa o ts'oanang ka har'a polyol (karolo ea A) ho theha ho fanyeha ho tsitsitseng.
2. Phekolo ea pele ea li-retardants tsa malakabe: rarolla mathata a ho monya mongobo, ho kopanya, le ho sebetsa hape ka isocyanate.
3. Keketso ea mohato ka mohato: Eketsa lisebelisoa ka tatellano ea letsoalo le boholo ba likaroloana ho qoba likhakanyo tse phahameng tsa lehae.
4. Taolo e thata ea mongobo: Metsi a sebelisa isocyanate (-NCO) karolong ea B, e lebisang pholisong e mpe.

II. Ts'ebetso e Felletseng ea Ts'ebetso (E ipapisitse le likarolo tse 100 tsa polyol ka karolo ea A)

Mohato oa 1: Phekolo ea Lelakabe la Lelakabe (lihora tse 24 esale pele)

• Aluminium Hypophosphite (AHP, likarolo tse 10):
  • Ho roala ka holim'a metsi ka silane (KH-550) kapa ntho e kopanyang ea titanate (NDZ-201):
    • Kopanya likarolo tse 0,5 tse kopanyang + likarolo tse 2 tsa anhydrous ethanol, hlohlelletsa metsotso e 10 bakeng sa hydrolysis.
    • Kenya phofo ea AHP 'me u tsose ka lebelo le phahameng (1000 rpm) bakeng sa 20 min.
    • Omisa ka ontong ka 80 ° C bakeng sa lihora tse 2, ebe o boloka o koetsoe.
• Aluminium Hydrooxide (ATH, likarolo tse 25):
  • Sebelisa submicron-size, silane-modified ATH (mohlala, Wandu WD-WF-20). Haeba e sa fetoloa, tšoara ka tsela e tšoanang le ea AHP.
• MCA (likarolo tse 6) le Zinc Borate (likarolo tse 4):
  • Omisa ho 60 ° C bakeng sa lihora tse 4 ho tlosa mongobo, ebe u sefa skrineng sa 300-mesh.

Mohato oa 2: A-Component (Polyol Side) Ts'ebetso ea Phatlalatso

1. Base Mixing:
   • Kenya likarolo tse 100 tsa polyol (mohlala, polyether polyol PPG) sejaneng se omeletseng.
   • Kenya likarolo tse 0.3 tsa polyether-modified polysiloxane leveling (mohlala, BYK-333).
2. Phahamiso ea Lebelo le Tlase:
   • Eketsa li-retardants tsa lelakabe ka tatellano: ATH (likarolo tse 25) → AHP (likarolo tse 10) → zinc borate (likarolo tse 4) → MCA (likarolo tse 6).
   • Hlohlelletsa 300-500 rpm bakeng sa 10 min ho fihlela ho se na phofo e omileng e setseng.
3. Phatlalatso ea High-Shear:
   • Fetolela ho "disperser" ea lebelo le phahameng (≥1500 rpm) bakeng sa 30 min.
   • Laola mocheso ≤50 ° C (ho thibela polyol oxidation).
4. Ho sila le ho ntlafatsa (Ho bohlokoa!):
   • Feta ka leloala la li-roll tse tharo kapa lehlabathe la lehlabathe la baskete ka makhetlo a 2-3 ho fihlela fineness ≤30μm (e lekoa ka Hegman gauge).
5. Tokiso ea Viscosity & Defoaming:
   • Kenya 0.5 likarolo tsa hydrophobic fumed silica (Aerosil R202) ho thibela ho tsitsa.
   • Kenya likarolo tse 0.2 tsa silicone defoamer (mohlala, Tego Airex 900).
   • Hlohlelletsa ka 200 rpm bakeng sa metsotso e 15 bakeng sa degassing.

Mohato oa 3: Phekolo ea B-Component (Isocyanate Side).

• Kenya likarolo tse 4-6 tsa sieve ea molek'hule (mohlala, Zeochem 3A) ho karolo ea B (mohlala, MDI prepolymer) bakeng sa ho monya mongobo.
• Haeba u sebelisa li-flame retardants tsa phosphorus (khetho e tlaase ea viscosity), kopanya ka ho toba ka karolo ea B ebe u hlohlelletsa 10 min.

Mohato oa 4: Ho Kopanya Karolo ea AB & Pheko

• Karolelano ea ho kopanya: Latela moralo oa sekhomaretsi oa AB oa mantlha (mohlala, A:B = 100:50).
• Mokhoa oa ho kopanya:
  • Sebelisa motsoako oa lipolanete tse nang le likarolo tse peli kapa tube ea ho kopanya e tsitsitseng.
  • Kopanya bakeng sa 2-3 min ho fihlela junifomo (ha ho na likhoele).
• Maemo a ho folisa:
  • Pholiso ea mocheso oa kamore: lihora tse 24 (e atolosoa ka 30% ka lebaka la ho monya mocheso o thibelang lelakabe).
  • Kalafo e potlakileng: 60°C/2 lihora (netefatsa bakeng sa liphetho tse se nang bubble).

III. Lintlha tsa Taolo ea Ts'ebetso ea Bohlokoa

IV. Mekgwa e Mengwe ya Phasalatso (Ntle le Sesebediswa sa ho Sila)

1. Mokhoa oa ho lokisa bolo:
   • Kopanya li-retardants tsa mollo le polyol ka karolelano ea 1: 1, leloala la bolo bakeng sa lihora tse 4 (libolo tsa zirconia, boholo ba 2mm).
2. Mokhoa oa Masterbatch:
   • Lokisetsa 50% flame retardant masterbatch (polyol e le carrier), ebe o hlapolla pele o sebelisoa.
3. Phatlalatso ea Ultrasonic:
   • Sebelisa ultrasonication (20kHz, 500W, 10 min) ho premixed slurry (e loketseng lihlopha tse nyenyane).

V. Litlhahiso tsa Phethahatso

1. Teko e nyane ea pele: Teko ka 100g ea A-component, e shebane le botsitso ba viscosity (24h phetoho <10%) le lebelo la ho folisa.
2. Molao oa tatellano oa ho kenyelletsa Flame retardant:
   • “E boima pele, e bobebe hamorao; hantle pele, e mahoashe hamorao” → ATH (boima) → AHP (e ntle) → zinki borate (bohareng) → MCA (e bobebe/e mahoashe).
3. Tharollo ya tshohanyetso:
   • Ho eketseha ha viscosity ka tšohanyetso: Eketsa 0.5% propylene glycol methyl ether acetate (PMA) ho hlapolla.
   • Pheko e mpe: Eketsa 5% e fetotsoeng MDI (mohlala, Wanhua PM-200) ho karolo ea B.