Catalogue - LR 1504 - 19 osy 8HS Silica Ablative Prepreg - Lewcott

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Epoxy adhesive, Panel filter, Prepreg, Panel air filter, Air filter

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86 Providence Rd • Millbury, MA 01527 (800) 225-7725 • www.lewcott.com

LR1504 Prepreg

LR1504 is a composite produced from a silica filled Lewcott PSR133 MIL-R-9299 phenolic resin matrix on a 18 osy high silica fabric. The material is designed to meet and/or exceed the thermal and insulation requirements of solid and liquid propulsion rockets.

Chemical Properties of LR1504 Prepreg


Property	Value	Test Method
Resin Solids, %	29-33	QCP-R-7
Volatile, %	3-7	QCP-V-1
Laminar Flow @ 150 psi, %	6-15	QCP-F-1
Filler Content, %	6-10	QCP-R-5
Uncured Thickness, x10^-3 in.	0.039	QCP-T-2
Prepreg Width, in	33

Physical Properties of LR1504

Property Value

Specific Gravity 1.71

Tensile Strength, psi 12,000

Tensile Modulus, msi 2.0

Tensile Elongation, % 0.5

Flexural Strength, psi 21,000

Flexural Modulus, msi 2.6

Compression Strength, psi 35,000

Interlaminar Shear Strength, psi 8,000

Test Method

ASTM-D-792

ASTM-D-638 ASTM-D-638 ASTM-D-638 ASTM-D-790

ASTM-D-790 ASTM-D-695

FTMS401/1041

Thermal Conductivity (across ply), BTU/ 0.23 ft.-hr.-^oF

ASTM-C-177

ASTM-C-351

Specific Heat @ 150^oF, BTU/lb. ^oF

0.22

0.024

Cured Ply Thickness, in.

Molding Cycle

Press cured at 325^oF using 1000 psi pressure for 2 hours.

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 suitability for use. Rev. Date: 6/07

LR 1504 - 19 osy 8HS Silica Ablative Prepreg - Lewcott - #1

Epoxy adhesive, Panel filter, Prepreg, Panel air filter, Air filter