RJM COMPOSITES LLC
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SL 3500 High Temp Filled Laminating System

Description:

SL 3500 is a filled, none staining high temperature epoxy laminating system. SL 3500 was developed to handle high temperature cycling at up to 350 degrees F with intermittent temperatures of 400 F. While SL 3500 will gel at room temperature, it must be post cured to reach it’s ultimate strength.

Material Handling Properties:

Mix ratio ( Parts by weight) ……………………………………………………………………….100R/15H

Density   ……………………………………………………………………………………… …12.2 lbs/ gal

Specific gravity……………………………………………………………………………………. …….1.46

Work time @ 25C/77F………………………………………………………………………………...60 Min.

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

Mixed Viscosity …………………………………………………………………………………… .3000 cps

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

Typical Physical Properties:

Ultimate Compressive strength ( ASTM D-695)…………………………………………………..31,000 psi

Ultimate flexural strength( ASTM D-790)…………………………………………………………32,400 psi

Tg by DSC………………………………………………………………………………………....166C/330F

Flexural Modulus ( ASTM D-790)………………………………………………………………...1.6 x 10(6)

Ultimate Tensile strength ( ASTM D-638)…………………………………………………………35,000 psi

Recommended Cure Schedule:

 2 hours @ 66C/150F

 2 hours @ 93C/200F

 2 hours @ 121C/ 250F

 1 hour  @ 149C/300F

 4 hours @ 177C/350F

* ramp rates should be done at 5 to 10 degrees / min F