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LR 2103 - 9 osy 8HS E Glass Ablative Prepreg - 55252 LR2103 MC Ablative Prepreg

LR2103 MC is a molding compound produced from a MIL-R-9299 phenolic resin matrix on a 9 osy 8 HS fiberglass fabric. The material is designed to meet and/or exceed the thermal and insulation re-quirements of the solid propulsion rockets.

Chemical Properties of LR2103 MC

Property Value Test Method Resin Solids, % 34-40 QCP-R-8 Volatile, % 1-4 QCP-V-1 Flow @ 150 psi, % 5-25 QCP-F-2 Bulk Factor 5-7 ASTM-D-1895 Property Value Test Method Specific Gravity 1.86 ASTM-D-792 Tensile Strength, psi 12,500 ASTM-D-651 Tensile Modulus, msi 2.4 ASTM-D-651 Flexural Strength, psi 20,000 ASTM-D-790 Flexural Modulus, msi 2.3 ASTM-D-790 Compression Strength, psi 40,000 ASTM-D-695 Mold Shrinkage, in./in. 0.0005 ASTM-D-955 Thermal Conductivity (with ply), BTU/ft.-hr.-

Physical Properties of LR2103 MC

o F 0.16 ASTM-C-177 Specific Heat @ 150
o F, BTU/lb.
o F 0.23 ASTM-C-351 CTE (normal to pressure)(80-500
o F), 10
-6 in./in./
o F 8 ASTM-D-696

Molding Cycle

Specimens were cured at 325

o

F using 1000 psi pressure for 30 minutes.

NOTE: The data presented herein has been developed under controlled manufacturing and test conditions and is considered accurate. No warranty is expressed or implied regarding the accuracy or use of this data or the use of this product. It is the responsibility of the end user to determine suit-ability for use. Date: 05/01/06