LR1400 - Rayon 8HS Carbon Ablative Prepreg - Lewcott - #1

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

LR1400 is a composite produced from Lewcott PSR133G carbon filled MIL-R-9299 phenolic resin matrix on an eight harness (8HS) rayon precursor carbon fabric. The material is designed to meet and/or ex­ceed the thermal and insulation requirements of solid propulsion rockets.

Property Resin Solids, %

Volatile, %

Laminar Flow @ 150 psi, % Filter Content, % Uncured Thickness, x10^-3 in. Areal Weight, lb./ln. yd. Prepreg Width, in.

Value 31-37

3-7

10-20

8-15

0.022

1.2

44

Test Method QCP-R-5

QCP-V-1

QCP-F-1 QCP-R-5 QCP-T-2

Property Value

Specific Gravity 1.45

Tensile Strength, psi 27,500

Tensile Modulus, msi 2.5

Tensile Elongation, % 1

Flexural Strength, psi 45,000

Flexural Modulus, msi 2.5

Compression Strength, psi 49,000

Interlaminar Shear Strength, psi 7,000 Thermal Conductivity (with ply), BTU/ft.-hr.-° F 0.61

Specific Heat @ 150^o F, BTU/lb. ^oF 0.29

CTE (across ply) (80-500 ^oF), 10^-6in./in./^oF 6.3

Cured Ply Thickness, in. 0.013

Test Method ASTM-D-792

ASTM-D-638

ASTM-D-638

ASTM-D-638

ASTM-D-790

ASTM-D-790 ASTM-D-695

FTMS 401/1041 ASTM-C-177

ASTM-C-351 ASTM-D-696

Laminate Cure 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