RJM COMPOSITES LLC
(517) 566-3200     sales@rjmcomposites.com

Description:

HW Surface Coat HT was developed to meet the exacting requirements of modern tooling applications. Developed for high temperature applications at or above 350 F ( 170 C), HW Surface Coat HT has demonstrated superior performance in autoclave prepreg fabrication. HW Surface Coat HT’s high temperature dimensional stability through repeated high temperature cycles has given fabricators a new degree of flexibility in high-performance construction.

For best results apply with a brush at ~ 15-20 mil thickness.

Material Handling Properties:

Mix ratio ( Parts by weight) ………………………………………………………………………100R/8H

Density   ……………………………………………………………………………………… 13.6 lbs/ gal

Specific gravity……………………………………………………………………………………. ….1.63

Work time @ 25C/77F……………………………………………………………………………....45 Min.

Demold time ………………………………………………………………………………………Post Cure

Mixed Viscosity ………………………………………………………………………Thixotropic Paste cps

Shelf life ( unopened @ 25C/77F)………………………………………………………………… One year

Color………..Resin ( black)

                       Hardener ( amber)

                       Mixed  ( black)

Typical Physical Properties:

Ultimate Compressive strength ( ASTM D-695)………………………………………………….20,400 psi

Ultimate flexural strength( ASTM D-790)…………………………………………………………8,000 psi

Tg by DSC……………………………………………………………………………………….not reported

Flexural Modulus ( ASTM D-790)………………………………………………………………339,700 psi

Ultimate Tensile strength ( ASTM D-638)………………………………………………………..28,930 psi

Notched Izod Impact…………………………………………………………………………   5.48 in-lbs/in

Heat deflection Temperature…………………………………………………………………………...300 F

Hardness (Shore D)………………………………………………………………………………………..85

CTE…………………………………………………………………………………………..0.000031in/inF

Shrinkage………………………………………………………………………………………….0.0006in/in

Post Cure:

2 Hrs 150 F

2 Hrs 250 F

4 Hrs 350 F