Baydur® 728 IBS (40 pcf)

Category: PUR-MDI , Polyurethane (MDI)
Manufacturer: Covestro - PUR
Trademark: Baydur®
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: pU3d4y_Baydur-728-IBS-40-pcf-.pdf
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Message
Baydur 728 IBS is a high-density polyurethane structural foam system used in the reaction injection molding (RIM) process. This system incorporates a specially engineered interactive blowing system (IBS) and internal mold release (IMR). The system is supplied as two reactive liquid components. Component A is a polymeric diphenylmethane diisocyanate (PMDI) and Component B is a formulated polyol system containing no CFC- or HCFC-blowing additives.

Baydur 728 IBS system is used in applications requiring a UL94 flammability rating of V-0 and/or 5VA for use in electronic, equipment housing, and appliance markets. The applications typically take advantage of the material's strength, excellent surface finish, and large-part capability. As with any product, use of the Baydur 728 IBS system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability.
General Information
Additive
  • Blowing Agent
  • Mold Release
Features
  • Good Strength
  • Good Surface Finish
Uses
  • Appliances
  • Electrical/Electronic Applications
  • Housings
Processing Method
  • Reaction Injection Molding (RIM)
PhysicalNominal ValueUnitTest Method
Molding Shrinkage - Flow (6.35 mm)0.70 to 0.90%ASTM D955
MechanicalNominal ValueUnitTest Method
Tensile Strength (Break, 6.35 mm)16.5MPaASTM D638
Tensile Elongation (Break, 6.35 mm)9.0%ASTM D638
Flexural Modulus (6.35 mm)931MPaASTM D790
Flexural Strength (6.35 mm)31.0MPaASTM D790
ImpactNominal ValueUnitTest Method
Charpy Unnotched Impact Strength 113kJ/m²Internal Method
Notched Izod Impact (6.35 mm)16J/mASTM D256
Unnotched Izod Impact (6.35 mm)110J/mASTM D256
ThermalNominal ValueUnitTest Method
Deflection Temperature Under Load (0.45 MPa, Unannealed, 6.35 mm)76.0°CASTM D648
CLTE - Flow (70°C, 6.35 mm)1.0E-4cm/cm/°CASTM D696
FlammabilityNominal ValueTest Method
Flame Rating (6.35 mm)V-0 5VAUL 94
Note Message
1 .0.25 in
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