Polynt DISTITRON® 278 Unsaturated Polyester Resin

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Polynt DISTITRON® 278 Unsaturated Polyester Resin
Categories:	Polymer; Thermoset; Polyester, TS
Material Notes:	Unsaturated polyester resin in styrene, Ortophthalic-Neopentylic Appearance: Yellow - Transparent Main resin characteristics: High reactivity, Clear, unaccelerated Main applications: BMC and SMC manufacture, good superficial appearance Molding information: Hot press molding Curing cycle: 16h at 70°C + 2h at 100°C + 1h at 100°C Information provided by Polynt Composites.
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Physical Properties	Metric	English	Comments

Density	1.11 g/cc	0.0401 lb/in³
Solids Content	63 - 65 %	63 - 65 %	MT-CU001C
Brookfield Viscosity	2000 - 2200 cP	2000 - 2200 cP	sp 3 rpm 20; MT-CUT23V

Chemical Properties	Metric	English	Comments
Acid Value	13 - 18	13 - 18	[mgKOH/g]; MT-CU001I

Mechanical Properties	Metric	English	Comments
Hardness, Barcol	47	47	ASTM D 2583
Tensile Strength	45.0 MPa	6530 psi	ISO 527
Elongation at Break	1.6 %	1.6 %	ISO 527
Tensile Modulus	3.40 GPa	493 ksi	ISO 527
Flexural Strength	100 MPa	14500 psi	ISO 178
Flexural Modulus	3.30 GPa	479 ksi	ISO 178

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	120 °C	248 °F	ISO 75 -2A
Glass Transition Temp, Tg	125 °C	257 °F	ASTM E 1545

Processing Properties	Metric	English	Comments
Cure Time	1.67 - 2.08 min @Temperature 130 °C	0.0278 - 0.0347 hour @Temperature 266 °F	Reactivity at 130°C + 1% TBPEH; RS.03.G
Shelf Life	6.00 Month	6.00 Month	in the dark; MT-CU002S

Descriptive Properties
Peak Exotherm	200 - 230°C		RS.08.G; Reactivity at 130°C + 1% TBPEH

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PPOLYN9384 / 231979

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