ITW Chockfast® PHILLYMASTIC TG-7B Epoxy Chocking Compound

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ITW Chockfast® PHILLYMASTIC TG-7B Epoxy Chocking Compound
Categories:	Polymer; Thermoset; Epoxy
Material Notes:	PHILLYMASTIC TG-7B is a two-component, load-bearing, epoxy mastic specifically developed for LPG/LNG tank or container system installations where shimming or void-filling of supporting components is required. TG-7B provides excellent load-bearing and adhesive properties at cryogenic temperatures assuring evenly distributed loads across all tank supports. This mastic is available as either a liquid or a paste so it can be poured, pumped or troweled into place. Both the liquid and paste can be mixed either by hand or with automatic dispensing equipment. Phillymastic TG-7B was designed to meet the requirements set forth by GAZ Transport’s Technical Specification N. 402; Revision F issued in 1993 for LNG tank installation. Thixotropy: Will not sag more than 10mm before hardening; sample TG-7B paste 60mm Wx100 mm Lx20mm D placed vertically at 20°C. ASTM D-2730. Information provided by ITW Performance Polymers.
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Physical Properties	Original Value	Comments

Specific Gravity	1.60 g/cc	Paste
	1.66 g/cc	Liquid
Viscosity	>= 48 cP	Liquid. LIQUID TG-7B.
	>= 1440 cP	Mix. LIQUID TG-7B.
	>= 54400 cP	Resin. LIQUID TG-7B.

Mechanical Properties	Original Value	Comments
Hardness, Barcol	30 - 34	Paste; ASTM D2583
	40 - 50	Liquid; ASTM D2583
Elongation at Break	>= 0.70 %
Compressive Strength	14532 psi	Liquid; ASTM D695
	14972 psi	Paste; ASTM D695
Compressive Modulus	721000 psi	Liquid; ASTM D695
	930000 psi	Paste; ASTM D695
Shear Strength	59.3 psi	Paste; Punch Shear Strength; ASTM D732
	1710.8 psi @Temperature 110 °C	Paste; DIN EN 1465
Adhesive Bond Strength	1.96 MPa @Temperature 40.0 °C	To birch wood. Plywood failure.; ASTM D-1002
	1.96 MPa @Temperature -45.0 °C	To birch wood. Plywood failure.; ASTM D-1002
	2.13 MPa @Temperature 20.0 °C	To birch wood. Plywood failure.; ASTM D-1002
	7.30 MPa @Temperature -45.0 °C	To steel with shop primer. Adhesive to primer interface failure.; ASTM D-1002
	8.80 MPa @Temperature 40.0 °C	To steel with shop primer. Adhesive to primer interface failure.; ASTM D-1002
	10.0 MPa @Temperature 20.0 °C	To steel with shop primer. Adhesive to primer interface failure.; ASTM D-1002

Thermal Properties	Original Value	Comments
CTE, linear	18.4 µin/in-°F @Temperature -30.0 - 30.0 °C	ASTM D696
Thermal Conductivity	0.450 W/m-K	0.001 inch per inch; ASTM D2566

Processing Properties	Original Value	Comments
Cure Time	8.00 hour @Temperature 60.0 °C	approximate
	72.0 hour @Temperature 40.0 °C	approximate
	288 hour @Temperature 20.0 °C	approximate
Pot Life	>= 90.0 min @Temperature 20.0 °C
Shelf Life	24.0 Month @Temperature 20.0 °C

Descriptive Properties
Creep Test Observation	0.011 to 0.053 inch/inch	after 120 hours at 300 psi
Mix Ratio by volume	11 to 1	Resin to Hardener. Liquid @ 20°C
	6 to 1	Resin to Hardener. Paste @ 20°C

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PITWC9020 / 239530

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