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Rulon Bearings

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Covestro Baytec® 352 Polyurethane
Categories: Polymer; Thermoset; Polyurethane, TS

Material Notes: Characterization: Baytec 352 is a two-component, one-shot system that yields a solid polyurethane elastomer.

Properties / Applications: Baytec 352 is a two-component, one shot system that yields a solid polyurethane elastomer with good mechanical properties in the hardness range of Shore 75A to 90A. As with any product, use of Baytec 352 in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability.

Formula 1: Baytec 352 Polyol (pbw): 100; 1,4-Butone Diol (pbw): 5; Baytec 352 Iso (pbw): 33.1

Formula 2: Baytec 352 Polyol (pbw): 100; 1,4-Butone Diol (pbw): 10; Baytec 352 Iso (pbw): 51.8

Formula 2: Baytec 352 Polyol (pbw): 100; 1,4-Butone Diol (pbw): 15; Baytec 352 Iso (pbw): 70.5 Formula 4: Baytec 352 Polyol (pbw): 100; 1,4-Butone Diol (pbw): 20; Baytec 352 Iso (pbw): 89.1

Information provided by Covestro

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.11 g/ccPolyol
 1.22 g/ccIsocyanate
Bulk Density 68.7 lb/ft³Polyol
 76.1 lb/ft³Isocyanate
Viscosity 105 - 175 cPIsocyanate
 1620 cP
@Temperature 73.0 °C
Polyol
 
Chemical PropertiesOriginal ValueComments
Acid Value 0.50[mg KOH/g], Polyol
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 76Formula 1; ASTM D2240
 82Formula 2; ASTM D2240
 86Formula 3; ASTM D2240
 89Formula 4; ASTM D2240
Tensile Strength at Break >= 14.1 MPaFormula 2; ASTM D412
 >= 16.6 MPaFormula 1; ASTM D412
 >= 19.3 MPaFormula 3; ASTM D412
 >= 23.1 MPaFormula 4; ASTM D412
Elongation at Break 241 %Formula 4; ASTM D1938
 264 %Formula 3; ASTM D1938
 277 %Formula 2; ASTM D1938
 409 %Formula 1; ASTM D1938
Tear Strength 74.0 pliFormula 1, Split; ASTM D1938
 189 pliFormula 3, Split; ASTM D1938
 199 pliFormula 4, Split; ASTM D1938
 199 pliFormula 2, Split; ASTM D1938
 273 pliFormula 1, Die C; ASTM D624
 409 pliFormula 2, Die C; ASTM D624
 483 pliFormula 3, Die C; ASTM D624
 549 pliFormula 4, Die C; ASTM D624
Taber Abrasion, mg/1000 Cycles 37Formula 1; ASTM D3489
 53Formula 4; ASTM D3489
 80Formula 2; ASTM D3489
 92Formula 3; ASTM D3489
Compression Set 69 %
@Temperature 70.0 °C,
Time 79200 sec
Formula 2; ASTM D395-B
 69 %
@Temperature 70.0 °C,
Time 79200 sec
Formula 3; ASTM D395-B
 82 %
@Temperature 70.0 °C,
Time 79200 sec
Formula 4; ASTM D395-B
 84 %
@Temperature 70.0 °C,
Time 79200 sec
Formula 1; ASTM D395-B
 
Thermal PropertiesOriginal ValueComments
Flash Point 110 °CPolyol
 213 °CIsocyanate
 
Processing PropertiesOriginal ValueComments
Mold Temperature 110 °C
Moisture Content <= 0.050 %Polyol
 
Descriptive Properties
AppearancePale yellow liquidIsocyanate
 White solidPolyol
Content25.5-26.5%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 go back to viewing the property data in MatWeb's normal format.

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PCOVEST0229 / 202012

Master Bond adhesives

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