Solvay LTM® 123 Cyanate Ester for Prepregs

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Solvay LTM® 123 Cyanate Ester for Prepregs
Categories:	Polymer; Thermoset; Polyester, TS
Material Notes:	LTM123 is a low temperature curing, toughened cyanate ester component prepreg developed for structural applications requiring ultimate dimensional stability in a space environment. Its low moisture absorption and low electrical permittivity characteristics also make it suitable for radomes and radar absorbing structures. LTM123 is also suitable for high service temperature structural applications in the motorsport market. LTM123 can be processed using autoclave and oven vacuum bag methods to produce low voidage composites and can be molded off a range of low cost tooling with few constraints on structure dimensions. For space applications, LTM123 can develop a Tg of 140LC (248°F) after a minimum initial cure at 80°C (176°F) and a free-standing post-cure of 120°C (248°F). For motorsport applications, LTM123 can develop a Tg of 250°C (482°F) after a minimum initial cure at 80°C (176°F) and free-standing post-cure of 240°C (464°F). Features & Benefits: 3 days tack life at 21°C (70°F) 6 months storage at -18°C (0°F) 70°C (158°F) initial cure Autoclave cure Good dimensional stability and thermal durability up to 250°C (482°F) after post-cure Maximum Tg of 330°C (626°F); can withstand thermal spikes to 330°C (626°F) Inherently flame retardant, with low toxic gas and smoke generation Good dielectric properties for radar transparency Information provided by Cytec, subsequently acquired by Solvay.
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Physical Properties	Metric	English	Comments

Density	1.19 g/cc	0.0430 lb/in³	Cured Resin
Moisture Absorption at Equilibrium	0.22 %	0.22 %	0 to 60% RH, 60°C, 1.5mm 0°±60°C M55J
	0.75 %	0.75 %	50%RH at 23°C
Viscosity	14 cP @Temperature 80.0 °C	14 cP @Temperature 176 °F
	154 cP @Temperature 60.0 °C	154 cP @Temperature 140 °F
	91780 cP @Temperature 30.0 °C	91780 cP @Temperature 86.0 °F
Linear Mold Shrinkage	0.00020 cm/cm	0.00020 in/in	After 200°C post-cure 0/90° 60%Vf
Storage Temperature	-18.0 °C	-0.400 °F

Electrical Properties	Metric	English	Comments
Dielectric Constant	2.77 @Frequency 1.00e+10 - 1.40e+10 Hz	2.77 @Frequency 1.00e+10 - 1.40e+10 Hz

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	250 °C	482 °F	thermal durability
	330 °C	626 °F	thermal spikes
Glass Transition Temp, Tg	90.0 °C	194 °F	16 hrs 80°C (Aerospace)
	140 °C	284 °F	2 hrs 135°C (Motorsport)
	210 °C	410 °F	8 hrs 200°C (Aerospace)
	250 °C	482 °F	2 hrs 240°C (Motorsport)

Processing Properties	Metric	English	Comments
Cure Time	180 min @Temperature 120 °C	3.00 hour @Temperature 248 °F	Aerospace Post-cure for Tg=140°C
	240 min @Temperature 150 °C	4.00 hour @Temperature 302 °F	Aerospace Post-cure for Tg=170°C
	240 min @Temperature 100 °C	4.00 hour @Temperature 212 °F	Aerospace Post-cure for Tg=120°C
	120 min @Pressure 0.621 MPa, Temperature 135 °C	2.00 hour @Pressure 90.0 psi, Temperature 275 °F	Recommended, Automotive
	960 min @Pressure 0.621 MPa, Temperature 80.0 °C	16.0 hour @Pressure 90.0 psi, Temperature 176 °F	Recommended, Aerospace
Shelf Life	6.00 Month @Temperature -18.0 °C	6.00 Month @Temperature -0.400 °F

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PCYTED178 / 180480

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