| EXCELLENT STRENGTH DEVELOPMENT | EASY POURING |
| VOC FREE | NON-SETTLING |
| COMPRESSIVE STRENGTH (ASTM D-695) | 16,000 psi |
| MODULUS IN COMPRESSION | 356,000 psi |
| TENSILE STRENGTH (ASTM D-638) | 4,800 psi |
| MODULUS OF ELASTICITY | 1,083,000 psi |
| % OF ELONGATION | 0.5% |
| HEAT
DISTORTION TEMPERATURE |
132 ° F |
| HARDNESS (ASTM D-2240) (ASTM D-2583) |
93
Shore D @ 25° C (77° F) 89 Shore D @ 50° C (122° F) 50 Shore D @ 70 ° C (158 ° F) 50 Barcol @ 25 ° C (77 ° F) |
| LINEAR SHRINKAGE (ASTM D-2566) | .00025 in./in. |
| IMPACT
STRENGTH - NOTCHED IZOD (ASTM D-256) |
3.9 in. lbs./in. |
| WORKING TIME | 15-20 Minutes @ 72 ° F (22 ° C) |
| GEL TIME | 25 minutes @ 72 ° F (22 ° C) |
| MIXED
VISCOSITY (ASTM D-2196) BROOKFIELD |
6,000 CPS @ 77 ° F (25 ° C) |
| SPECIFIC GRAVITY (ASTM D-792) | 1.7 |
| WATER ABSORPTION (30 DAYS @ 72 ° F) | 0.31% |
Available in 11, 22, 33, and 50 pound kits with mixing paddle.
Volume/kit:
11 lb. = 179 cu. in.
22 lb. = 358 cu. in.
33 lb. = 537 cu. in.
50 lb. = 814 cu. in.
Bulk quantities available for automatic meter mixing/dispensing equipment applications.
The storage temperature of Copps Backing will greatly effect both the ease of pouring and the curing time. For best results, Copps Backing kits should be stored inside (60 ° to 80 ° F) for at least 24 hours before use.
Caution: Mix and pour in a well-ventilated area. Avoid contact with skin and eyes. If contact does occur, wash skin with soap and water and seek medical help. See cautions and first aid instructions on can labels.
Worklife/pouring time will depend on backing temperature, ambient temperature and temperature of parts. Typical worklife at 72 ° F is 15-20 minutes. Pouring time and viscosity increase as temperature decreases. With hotter temperatures you have less time to pour. Care should be taken to insure that the entire kit is poured before the working time elapses. In other words, do not mix more than you can pour during the worklife.
The cure time of Copps Backing will depend greatly on the temperature of the concaves or mantles. If the temperature is low, heat can be applied to the outside of the concaves or mantles with a torch to bring their temperature up to 80° -90° F. Do not exceed 150° F. Do not apply the torch directly to the Backing.
Use the chart below as a guide for curing time.
Temperature (° F) of concaves or mantles Cure time from last pour to Crusher restart
| 50° | 24 hours |
| 60° | 12 hours |
| 70° | 6 hours |
| 80° | 3 hours |
| 90° | 1‡ hours |
Avoid breathing of vapors. Forced local exhaust is recommended to effectively minimize exposure. NIOSH approved, organic vapor respirators and forced exhaust are recommended in confined areas, or when conditions (such as heated polymers, sanding) may cause high vapor concentrations. Do not weld on or burn the backing. Hazardous vapor is released when the backing is burned.
Avoid skin or eye contact with hardener. Wash skin with soap and water if contact occurs. If eye contact occurs flush with water for 15 minutes and obtain medical attention.
Read and understand all cautions on can labels and material safety data sheets before using this material.
Copps Industries, Inc. gives no warranty, express or implied, and all products are sold upon condition that purchasers will make their own tests to determine the quality and suitability of the product. Copps Industries, Inc. shall be in no way responsible for the proper use and service of the product. The information given in this publication is considered to be accurate and reliable and is provided as a service only. Physical properties shown are typical. Actual properties are dependent on curing conditions and degree of cure. Any information or suggestions given are without warranty of any kind and purchasers are solely responsible for any loss arising from the use of such information or suggestions. No information or suggestions given by us shall be deemed to be a recommendation to use any product in conflict with any existing patent rights.
TB#4001 (03/12/98)