Color Amino Moulding Powder Urea Formaldehyde Melamine Compound for Making Tableware Electrical Appliances Toilet Cover Seat

Color Amino Moulding Powder Urea Formaldehyde Melamine Compound for Making Tableware Electrical Appliances Toliet Cover Seat

UFMC Moulding Powder for Toilet Seats, Bathroom Fittings & Household Products

BIS-Certified Urea Formaldehyde Moulding Compound (UMC) for Sanitaryware Manufacturing

Heat-Resistant UMC Resin Powder - Ideal for Electrical Insulation & Switchgear

Tech index:

Synthesis of Urea Formaldehyde (UF) Moulding Compound‌

‌1. Raw Materials & Reaction Mechanism‌

• ‌Core Components‌:
  • ‌Urea‌ (CH₄N₂O) and ‌formaldehyde‌ (CH₂O) in a molar ratio of ‌1:1.5–2.0‌ to ensure proper cross-linking.
  • ‌Catalysts‌:
    • ‌Alkaline catalysts‌ (e.g., NaOH) for initial polymerization.
    • ‌Acidic catalysts‌ (e.g., NH₄Cl or HCOOH) for curing.
  • ‌Additives‌: Optional modifiers (e.g., ‌polyvinyl alcohol‌ or ‌melamine‌) to enhance mechanical/thermal properties.

‌2. Synthesis Steps‌

‌Step 1: Hydroxymethylation‌

• ‌Conditions‌:
  • Mix urea and formaldehyde in ‌alkaline conditions‌ (pH 7.2–8.4) at ‌40–45°C‌ for 10–30 minutes.
  • Reaction generates ‌hydroxymethyl urea‌ intermediates.Excavator track roller

‌Step 2: Condensation Polymerization‌

• ‌Acid-Catalyzed Reaction‌:
  • Adjust pH to ‌5.1–5.4‌ using ‌NH₄Cl‌ or ‌HCOOH‌ to initiate polycondensation.
  • Heat to ‌85–102°C‌ for 1–2 hours to form a ‌branched polymer network‌ with methylene and methylene Gufaith Urea Formaldehyde Moulding Compound linkages.
  • Monitor viscosity to determine reaction completion.

‌Step 3: Neutralization & Stabilization‌

• Adjust pH back to ‌neutral or weakly alkaline‌ (pH 7–8) to stabilize the resin.
• Cool to ‌<40°C‌ and add final urea batches to reduce free formaldehyde.Making Tableware Color Amino Moulding Powder

‌Step 4: Moulding Compound Preparation‌

• ‌Additives‌:
  • ‌Fillers‌ (e.g., cellulose or wood flour) for mechanical strength‌2.
  • ‌Curing accelerators‌ (e.g., ZnSO₄ or oxalate esters) for faster cross-linking.
• ‌Processing‌:
  • Dry and grind the resin into powder.
  • Mix with additives and press under ‌15–30 MPa‌ at ‌130–160°C‌ to form moulded parts

Color Amino Moulding Powder,Urea Formaldehyde Melamine Compound,Toliet Moulding Powder Cover Seat,Electrical Appliances Moulding Powder,Making Tableware Color Amino Moulding Powder