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Master Bond adhesives

Covestro Baytec® SPR-066A Polyurethane
Categories: Polymer; Thermoset; Polyurethane, TS

Material Notes: Characterization: Baytec SPR-066A is a two-component, 100%-solids spray system with a Shore hardness of 66A.*

Properties / Applications: Baytec SPR-066A is a two-component, 100%-solids spray system with a Shore hardness of 66A.* The isocyanate component is a modified diphenylmethane diisocyanate (MDI) prepolymer, and the polyol component is a polyether polyol blend. The system has added UV stabilizers and is used in spray applications to improve the corrosion, weather, and abrasion resistance of metal, concrete, wood, plastic, PVC, and porous organic and inorganic materials. In-mold spray application is also possible. Typical applications are liners for dump bodies, garbage trucks, pipes, and tanks, as well as protective layers for flexible foam, wood, and industrial surfaces. This system is also available as a grey/black-pigmented system, Baytec SPR-166A (product code U832). As with any product, use of Baytec SPR-066A in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability.

Information provided by Covestro

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Physical PropertiesMetricEnglishComments
Specific Gravity 0.960 g/cc0.960 g/ccASTM D792
 1.03 g/cc1.03 g/ccPolyol
 1.09 g/cc1.09 g/ccIsocyanate
Viscosity 2100 cP2100 cPPolyol
 2500 cP2500 cPIsocyanate
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 6565ASTM D2240
Tensile Strength at Break 4.14 MPa600 psiASTM D412
Tensile Stress at Strain  2.28 MPa
@Strain 200 %
331 psi
@Strain 200 %
ASTM D412
 3.10 MPa
@Strain 300 %
450 psi
@Strain 300 %
ASTM D412
 6.14 MPa
@Strain 100 %
891 psi
@Strain 100 %
ASTM D412
Elongation at Break 500 %500 %ASTM D412
Compressive Strength  0.345 MPa
@Strain 5.0 %
50.0 psi
@Strain 5.0 %
ASTM D575
 0.621 MPa
@Strain 10 %
90.1 psi
@Strain 10 %
ASTM D575
 1.45 MPa
@Strain 25 %
210 psi
@Strain 25 %
ASTM D575
Tear Strength 14.0 kN/m80.0 pliSplit Tear; ASTM D1938
 33.3 kN/m190 pliDie C; ASTM D624
Taber Abrasion, mg/1000 Cycles 350
@Load 1.00 kg
350
@Load 2.20 lb
H-18; ASTM D4060
 
Electrical PropertiesMetricEnglishComments
Dielectric Strength 14.4 kV/mm366 kV/inASTM D419
Arc Resistance 123 sec123 secASTM D492
 
Thermal PropertiesMetricEnglishComments
Flash Point 180 °C356 °FPolyol
 216 °C421 °FIsocyanate
 
Processing PropertiesMetricEnglishComments
Gel Time 0.250 - 0.750 min0.250 - 0.750 min
 
Descriptive Properties
AppearanceWhite liquidPolyol
 Yellowish liquidIsocyanate
Content9.8%NCO, Isocyanate
Hydroxyl number[mg KOH/g], Polyol

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PCOVEST0262 / 202045

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