IDES Prospector Already have an account? Login Here

IDES

Baydur® 730 IBS (25 pcf)

Polyurethane (MDI)

Supplied by Bayer MaterialScience LLC

The technical datasheet with complete property values for Baydur® 730 IBS (25 pcf) is available to members of the Prospector Plastics Database.
Register to view full datasheet.
Register to View Full Datasheet
Product Description
Baydur 730 IBS is a rigid polyurethane structural foam system used in the reaction injection molding (RIM) process. This system incorporates a specially engineered interactive blowing system (IBS) and is supplied as two reactive liquid components. Component A is a modified polymeric diphenylmethane diisocyanate (PMDI) prepolymer blend, and Component B is a formulated polyol system containing no CFC (Chlorofluorocarbon) or HCFC (Hydrochlorofluorocarbon) blowing additives. Note: Component B phase-separates upon standing and must be mixed thoroughly via mechanical means prior to use.

The Baydur 730 IBS system was designed for general-purpose applications and is used in the construction, agricultural, consumer products, industrial, and specialty automotive markets. The applications typically take advantage of the material's strength, as well as its excellent surface finish, large part capability, and good flowability. As with any product, use of the Baydur 730 IBS system in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability.
General  
Material Status 
  • Commercial: Active
Availability 
  • North America
Additive 
  • Blowing Agent
Features 
  • Good Flow
  • Good Strength
  • Good Surface Finish
Uses 
  • Agricultural Applications
  • Automotive Applications
  • Construction Applications
  • General Purpose
  • Industrial Applications
Processing Method 
  • Reaction Injection Molding (RIM)
Physical
Nominal Value
Unit
Test Method
Specific Gravity
 
 ASTM D792
Molding Shrinkage - Flow
     ASTM D955
0.250 in
in/in
  
0.500 in
in/in
  
Mechanical
Nominal Value
Unit
Test Method
Tensile Strength
     ASTM D638
Break, 0.250 in
psi
  
Break, 0.500 in
psi
  
Tensile Elongation
     ASTM D638
Break, 0.250 in
%
  
Break, 0.500 in
%
  
Flexural Modulus
     ASTM D790
0.250 in
psi
  
0.500 in
psi
  
Flexural Strength
     ASTM D790
0.250 in
psi
  
0.500 in
psi
  
Impact
Nominal Value
Unit
Test Method
Charpy Unnotched Impact Strength
     Internal Method
-- 2
ft·lb/in²
  
-- 3
ft·lb/in²
  
Hardness
Nominal Value
Unit
Test Method
Durometer Hardness
     ASTM D2240
Shore D, 0.250 in
 
  
Shore D, 0.500 in
 
  
Thermal
Nominal Value
Unit
Test Method
Deflection Temperature Under Load
     ASTM D648
66 psi, Unannealed, 0.250 in
°F
  
66 psi, Unannealed, 0.500 in
°F
  
Thermoset
Nominal Value
Unit
Test Method
Thermoset Components
      
Part A
 
  
Part B
 
  
Additional Information
Part A
  • Type: Isocyanate
  • Appearance: Dark brown liquid
  • Specific Gravity @ 25°C: 1.24
  • Viscosity @25°C: 320 cps
  • Flash Point PMCC: 213°C
  • NCO: 27 wt%

Part B
  • Type: Polyol
  • Appearance: Colorless liquid
  • Specific Gravity @ 25°C: 1.05
  • Viscosity @25°C: 1400 cps
  • Flash Point PMCC: 191°C
  • Water: 0.54 to 0.66 wt%
  • Hydroxyl Number: 502 to 542 KOH/g

Material Temperature - Isocyanate (Component A): 30 to 32°C
Material Temperature - Polyol (Component B): 35 to 38°C
Mold Temperature: 66 to 76°C

Hand Mix Reactivity at 25°C
  • Cream Time: 18 to 28 sec
  • Gel Time: 36 to 46 sec
  • Tack Free Time: 44 to 55 sec
  • Free-Rise Density: 7.5 to 10 lb/ft³

Polyol Nucleation Specific Gravity: 0.80 to 0.85 0
Typical cure Time, 0.250 in Thickness: 3 to 4
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: Baydur® 730 IBS, Baydur 730 IBS, Baydur® 730 IBS (25 pcf), Baydur 730 IBS 25 pcf, Baydur® , Baydur, Baydur730IBS25pcf, 730 IBS, 730 IBS (25 pcf), 730 IBS 25 pcf, 730IBS, IBS25, 25pcf, 730IBS25pcf, Polyurethane, Polyurethane (MDI), Polyurethane MDI, PUR-MDI, PURMDI, PUR:MDI, PUR/MDI, PUR+MDI, PUR_MDI, PUR MDI, PUR, Bayer, PolyurethaneMDI, IBS730
Features
Features may also be described by the following terms: Good Strength, Good Surface Finish, Good Flow.
Uses
Uses may also be described by the following terms: Automotive Applications, Automotive Sector.
Notes
1Typical properties: these are not to be construed as specifications.
20.5
30.25 in
 
IDES
Copyright © 2012 IDES
The information presented on this datasheet was acquired by IDES from the producer of the material. IDES makes substantial efforts to assure the accuracy of this data. However, IDES assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.