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Master Bond adhesives

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Covestro DESMODUR® MD1380 + BAYTEC® D21 + BAYTEC® XL B (Catalyst SD2-40) 75A Polyurethane, MDI-Ester
Categories: Polymer; Thermoset; Polyurethane, TS

Material Notes:

Information provided by Covestro

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.01 g/ccBAYTEC® XL B
 1.13 g/ccBAYTEC® D21
 1.15 g/ccDESMODUR® MD1380
 1.21 g/cc
Viscosity 30 cPBAYTEC® XL B
 1100 cPBAYTEC® D21
 1200 cPDESMODUR® MD1380
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 75DIN 53505
 72
@Temperature 80.0 °C
DIN 53505
 78
@Temperature -5.00 °C
DIN 53505
Tensile Strength at Break 27.0 MPaDIN 53504
Tensile Stress at Strain 1.20 MPa
@Strain 10 %
DIN 53504
Elongation at Break 500 %DIN 53504
100% Modulus 0.00450 GPa
@Strain 100 %
DIN 53504
200% Modulus 0.00600 GPa
@Strain 200 %
DIN 53504
300% Modulus 0.00800 GPa
@Strain 300 %
DIN 53504
Resilience 48[%]; DIN 53512
Tear Strength 165 pliwith nick; ISO 34-1
 479 pliwithout nick; ISO 34-1
Abrasion 35[mm3]; ISO 4649
Compression Set 24 %
@Temperature 70.0 °C,
Time 79200 sec
ISO 815-1
 
Processing PropertiesOriginal ValueComments
Processing Temperature 45.0 °CBAYTEC® XL B
 60.0 °CBAYTEC® D21
 80.0 °CDESMODUR® MD1380
Mold Temperature 110 °C
Pot Life 2.00 min
 
Descriptive Properties
AppearancesolidDESMODUR® MD1380
 solidBAYTEC® D21
 solidBAYTEC® XL B
Content0.11SD2-40 % / total (by weight), (catalyst at the head)
 100Parts by weight of prepolymer
 2.1SD2-40 % / BAYTEC® XL B (by weight), to mix with BAYTEC® XL B
 30Parts by weight of BAYTEC® D21
 7.4Parts by weight of BAYTEC® XL B
 8.35-8.75%NCO

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