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Master Bond adhesives

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Inov Chem Donspray 502 HCFC-141b Base blend polyols
Categories: Polymer; Thermoplastic; Polyurethane, TP

Material Notes: DonSpray 502 is spray blend polyols with HCFC-141B as blowing agent, it reacts with isocyanate to produce foam which has excellent performances, which are as follows,
1) fine and uniformity cells
2) low thermal conductivity
3) perfect fire resistance
4) excellent low temperature dimensional stability.
It applies to all kinds of thermal insulation projects which use the spray, such as cold rooms, large pots, large-scale pipelines and construction out-wall or inner-wall etc.

Information provided by Shandong INOV Polyurethane Co., Ltd.

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.12 - 1.20 g/cc
Density >= 0.0320 g/ccSpray Density; GB 6343
Water Absorption <= 3.0 %GB 8810
Viscosity 100 - 200 cPDynamic
Storage Temperature 10.0 - 25.0 °C
 
Mechanical PropertiesOriginal ValueComments
Elongation at Break >= 10 %GB/T9641
Compressive Strength >= 0.150 MPaGB/T8813
Adhesive Bond Strength >= 0.120 MPaGB/T16777
 
Thermal PropertiesOriginal ValueComments
Thermal Conductivity <= 0.0240 W/m-K
@Temperature 15.0 °C
GB 3399
Oxygen Index >= 26 %GB 8624
 
Processing PropertiesOriginal ValueComments
Gel Time 0.100 - 0.167 min
Shelf Life 6.00 Month
 
Descriptive Properties
AppearancePale yellow to brown viscous liquid
Closed-cell rate=90%GB 10799
Cream time3-5 sec
Dimensional stability=1.0%24h, -20?; GB/T8811
 =1.5%24h, 70?; GB/T8811
Hydroxyl value200-300 mgKOH/g
Recommended Ratio100DonSpray 502 blend polyols
 100-105Isocyanate MDI

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PINOVCHM024 / 312553

Rulon Bearings

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