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Elmet Technologies

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Covestro Baytec® RTC V85 Component A Polyurethane
Categories: Polymer; Thermoset; Polyurethane, TS

Material Notes: Characterization: Baytec RTC-V85 Component A is a four component, 100%-solid rotational casting system, which can make urethane elastomers in a range of hardness (72 to 93 Shore A).

Properties / Applications: Baytec RTC-V85 Component A is a four component, 100%-solid rotational casting system, which can make urethane elastomers in a range of hardness (72 to 93 Shore A)*. The isocyanate component is a modified diphenylmethane diisocyanate (MDI) prepolymer, and the three polyol components are polyether polyol blends. The system is a special, fast reacting system designed to be cast on rotating roll cores using the rotational casting technique. Typical applications are on rolls for the paper, textile, and steel industries and belt rollers. This system can be pigmented to most any color. As with any product, use of the Baytec RTC-V85 Component A in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability.

Formula 1: Component A: 55 pbw, Component B: 100 pbw; Formula 2: Component A: 76 pbw, Component B: 67 pbw, Component C: 33 pbw; Formula 3: Component A: 99 pbw, Component B: 33 pbw, Component C: 62 pbw, Component D: 5 pbw; Formula 4: Component A: 120 pbw, Component C: 96 pbw, Component D: 5 pbw

Information provided by Covestro

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.03 g/ccPolyol, Component B
 1.03 g/ccPolyol, Component D
 1.04 g/ccPolyol, Component C
 1.06 g/ccFormula 1; ASTM D792
 1.06 g/ccFormula 2; ASTM D792
 1.06 g/ccFormula 3; ASTM D792
 1.06 g/ccFormula 4; ASTM D792
 1.09 g/ccIsocyanate, Component A
Viscosity 130 cPPolyol, Component D
 1500 cPPolyol, Component B
 2200 cPPolyol, Component C
 2000 - 3000 cPIsocyanate, Component A
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 72Formula 1; ASTM D2240
 83Formula 2; ASTM D2240
 90Formula 3; ASTM D2240
 93Formula 4; ASTM D2240
Tensile Strength at Break 11.2 MPaFormula 1; ASTM D412
 12.8 MPaFormula 2; ASTM D412
 17.1 MPaFormula 3; ASTM D412
 19.1 MPaFormula 4; ASTM D412
Elongation at Break 430 %Formula 4; ASTM D412
 460 %Formula 2; ASTM D412
 460 %Formula 3; ASTM D412
 800 %Formula 1; ASTM D412
Compressive Strength 2.07 MPa
@Strain 25 %
Formula 1; ASTM D575
 3.79 MPa
@Strain 25 %
Formula 2; ASTM D575
 4.45 MPa
@Strain 25 %
Formula 3; ASTM D575
 4.83 MPa
@Strain 25 %
Formula 4; ASTM D575
Tear Strength 295 pliDie C, Formula 1; ASTM D624
 365 pliDie C, Formula 2; ASTM D624
 370 pliDie C, Formula 3; ASTM D624
 415 pliDie C, Formula 4; ASTM D624
Taber Abrasion, mg/1000 Cycles 115Formula 4; ASTM D4060
 170Formula 1; ASTM D4060
 175Formula 2; ASTM D4060
 200Formula 3; ASTM D4060
 
Thermal PropertiesOriginal ValueComments
Flash Point 165 °CPolyol, Component B
 165 °CPolyol, Component C
 177 °CPolyol, Component D
 216 °CIsocyanate, Component A
 
Descriptive Properties
AppearanceWhite liquidPolyol, Component B
 White liquidPolyol, Component C
 White liquidPolyol, Component D
 Yellowish liquidIsocyanate, Component A
Content9.65-10.24%NCO, Component A, Isocyanate
Hydroxyl number[mg KOH/g], Component B, Polyol
 [mg KOH/g], Component C, Polyol
 [mg KOH/g], Component D, Polyol

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PCOVEST0261 / 202044

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