20-3651\40 EPOXY RESIN
""
Below is a cache of http://www.epoxies.com/tech/20-365140R.pdf. It's a snapshot of the page taken as our search engine crawled the Web.
The web site itself may have changed. You can check the current page or check for previous versions at the Internet Archive.
Yahoo! is not affiliated with the authors of this page or responsible for its content.
20-3651\40 EPOXY RESIN
1-800-EPOXIES (376-9437)
401-946-5564 Fax: 401-946-5526
21 Starline Way
Cranston, RI 02921 USA
www.epoxies.com
service@epoxies.com
20-3651\40 EPOXY RESIN
DESCRIPTION:
20-3651\40 is a filled epoxy casting, potting, and encapsulating resin system. This is a lower viscosity version of
the 20-3651. This system exhibits excellent physical, thermal, and electrical insulation properties. 20-3651\40 is
easily machined and exhibits outstanding adhesion to metals, ceramics, and plastics. The Flame Retardant version
is 20-3651\40 FR.
20-3651\40 FR when cured with Cat. 105 is UL Listed as meeting the stringent requirements of UL94 V-O.
When cured with Catalyst #105, this versatile epoxy system meets the requirements of MIL-I-16923 for Types B, C,
and D.
TYPICAL SPECIFICATIONS:
CAT.190
CAT.105
CAT.145
Viscosity Resin, 25
癈 cps
32,500
---
---
---
Mixed Viscosity, 25
癈
cps
10,000
4,000
2,000
Specific Gravity, 25
癈/25癈,
mixed
1.44
1.45
1.40
Hardness,
Shore
D
88
88
85
Cure
Shrinkage,
in\in
.0015
.0015
.0015
Tensile
Strength,
psi
6,100
9,200
6,300
Compressive
Strength,
psi
19,300
15,500
17,500
Operating Temp. Range,
癈
-40 to +130 -55 to +155 -65 to +105
Dielectric Strength, Volts/Mil
450
450
450
Dielectric
Constant
at
1MHZ
3.9
3.8
3.8
Volume
Resistivity,
OHM-CM >10
15
>10
14
>10
14
Dissipation
Factor,
1MHZ
.06
.02
.07
Water
Absorption,
%(24Hr.)
0.3
0.1
0.3
Thermal Conductivity, BTU/hr/ft
2
/
癋/in.
4.6
4.6
4.6
Thermal Expansion Coefficient, 1
癈
48x10
-6
45x10
-6
60.5x10
-6
Flexural
Strength,
psi
12,000
14,000
10,000
Outgassing
%TML
0.31
0.55
---
%CVCM
0.03
0.01
---
1-800-EPOXIES (376-9437)
401-946-5564 Fax: 401-946-5526
21 Starline Way
Cranston, RI 02921 USA
www.epoxies.com
service@epoxies.com
INSTRUCTIONS FOR USE:
A. ROOM TEMPERATURE CURING WITH CATALYST 190:
Catalyst 190 is designed for applications requiring a room temperature curing system with excellent physical and
electrical insulation properties.
1. By weight, thoroughly mix 8-9 part Catalyst 190 to 100 parts 20-3651\40 Resin.
By volume, thoroughly mix 12 part Catalyst 190 to 100 part 20-3651\40 Resin.
2. Pour and allow to cure according to one of the following schedules:
25
癈 16-24
Hours
45
癈 4-6
Hours
65
癈 1-2
Hours
B. HEAT CURING WITH CATALYST 105:
Catalyst 105 is designed for applications requiring the optimum in electrical insulation, physical, and thermal
properties up to 165
癈.
1. By weight, thoroughly mix 10-11 part Catalyst 105 to 100 parts 20-3651\40 Resin
By volume, thoroughly mix 14 parts Catalyst 105 to 100 parts 20-3651\40 Resin.
2. Pour and allow to cure according to one of the following schedules:
80
癈 8-16
Hours
100
癈 2-4 Hours
120
癈 30-60 Minutes
A post cure of 4-16 hours at the highest expected use temperature is recommended.
C. ROOM TEMPERATURE CURING WITH CATALYST 145:
Catalyst 145 is designed for a lower mixed viscosity and long pot life. Has outstanding low temperature properties
and good adhesion to glass.
1. By weight, thoroughly mix 18 parts Catalyst 145 to 100 parts 20-3651\40 Resin
By volume, thoroughly mix 27 part Catalyst 145 to 100 part 20-3651\40 Resin.
2. Pour and allow to cure according to one of the following schedules:
1-800-EPOXIES (376-9437)
401-946-5564 Fax: 401-946-5526
21 Starline Way
Cranston, RI 02921 USA
www.epoxies.com
service@epoxies.com
25
癈 24
Hours
45
癈 3-6
Hours
65
癈 3-4
Hours
IMPORTANT:
The information in this brochure is based on data obtained by our own research and is considered accurate. However, no warranty is
expressed or implied regarding the accuracy of these data, the results to be obtained from the use thereof, or that any such use will not
infringe any patent. This information is furnished upon the condition that the person receiving it shall make his own tests to determine the
suitability thereof for his particular purpose.
06/02