HMC Electronics 40904 User Manual
Technical Data Sheet
LOCTITE®409
December-2008
PRODUCT DESCRIPTION
LOCTITE®409 provides the following product characteristics:
Technology Cyanoacrylate
Chemical Type Ethyl cyanoacrylate
Appearance (uncured) Clear to slightly cloudy gel
LMS
Components One part - requires no mixing
Viscosity High
Cure Humidity
Application Bonding
Key Substrates Plastics, Rubbers and Metals
LOCTITE®409 is a general purpose cyanoacrylate adhesive
gel. The gel consistency prevents adhesive flow even on
vertical surfaces.
TYPICAL PROPERTIES OF UNCURED MATERIAL
Specific Gravity @ 25 °C 1.05
Flash Point - See MSDS
Casson Viscosity, 25 °C, mPa·s (cP):
Cone and plate rheometer ≥4,000
LMS
Viscosity, Brookfield - RVF, 25 °C, mPa·s (cP):
Spindle TC, speed 20 rpm, Helipath *15,000 to 40,000
LMS
* Applies to material made in N. America
TYPICAL CURING PERFORMANCE
Under normal conditions, the atmospheric moisture initiates the
curing process. Although full functional strength is developed
in a relatively short time, curing continues for at least 24 hours
before full chemical/solvent resistance is developed.
Cure Speed vs. Substrate
The rate of cure will depend on the substrate used. The table
below shows the fixture time achieved on different materials
at 22 °C / 50 % relative humidity. This is defined as the time to
develop a shear strength of 0.1 N/mm².
Fixture Time, seconds:
Steel (degreased) 50 to 100
Aluminum 5 to 30
Neoprene 15 to 25
Rubber, nitrile 15 to 25
ABS 20 to 60
PVC 50 to 100
Polycarbonate 40 to 80
Phenolic 20 to 50
Cure Speed vs. Bond Gap
The rate of cure will depend on the bondline gap. Thin bond
lines result in high cure speeds, increasing the bond gap will
decrease the rate of cure.
Cure Speed vs. Activator
Where cure speed is unacceptably long due to large gaps,
applying activator to the surface will improve cure speed.
However, this can reduce ultimate strength of the bond and
therefore testing is recommended to confirm effect.
TYPICAL PROPERTIES OF CURED MATERIAL
After 24 hours @ 22 °C
Physical Properties:
Coefficient of Thermal Expansion,
ISO 11359-2, K
-1
80×10
-6
Coefficient of Thermal Conductivity, ISO 8302,
W/(m·K)
0.1
Glass Transition Temperature, ASTM E 228, °C 120
Electrical Properties:
Dielectric Constant / Dissipation Factor, IEC 60250:
0.05-kHz 2.3 / <0.02
1-kHz 2.3 / <0.02
10-kHz 2.3 / <0.02
Volume Resistivity, IEC 60093, Ω·cm 10×10
15
Dielectric Breakdown Strength,
IEC 60243-1, kV/mm
25
TYPICAL PERFORMANCE OF CURED MATERIAL
Adhesive Properties
After 24 hours @ 22 °C
Lap Shear Strength, ISO 4587:
Steel (grit blasted) N/mm² 18 to 26
(psi) (2,610 to 3,770)
Aluminum (etched) N/mm² 11 to 19
(psi) (1,595 to 2,755)
ABS N/mm² >6
(psi) (>870)
PVC N/mm² >6
(psi) (>870)
Polycarbonate N/mm² >5
(psi) (>725)
Phenolic N/mm² 5 to 15
(psi) (725 to 2,175)
Neoprene N/mm² >10
(psi) (>1,450)
Nitrile N/mm² >10
(psi) (>1,450)
Tensile Strength, ISO 6922:
Steel (grit blasted) N/mm² 12 to 25
(psi) (1,740 to 3,625)
After 30 seconds @ 22 °C
Tensile Strength, ISO 6922:
Buna-N N/mm² ≥7.0
LMS
(psi) (≥1,015)
Documentation Provided By HMC Electronics
33 Springdale Ave. Canton, MA 02021
http://www.hmcelectronics.com
(800) 482-4440
TDS LOCTITE®409, December-2008
TYPICAL ENVIRONMENTAL RESISTANCE
Cured for 1 week @ 22 °C
Lap Shear Strength, ISO 4587:
Mild Steel (grit blasted)
Hot Strength
Tested at temperature
% Strength @ 22 °C
Temperature, °C
100
75
50
25
0
0 60 80 100 120
Heat Aging
Aged at temperature indicated and tested @ 22 °C
% Initial Strength @ 22 °C
Exposure Time, hours
150
125
100
75
50
25
0
0 100 500 1000 5000
80 °C
100 °C
Chemical/Solvent Resistance
Aged under conditions indicated and tested @ 22 °C.
% of initial strength
Environment °C 100 h 500 h 1000 h
Motor oil (MIL-L-46152) 40 100 100 95
Gasoline 22 100 100 100
Isopropanol 22 100 100 100
1,1,1 Trichloroethane 22 100 100 100
Freon TA 22 100 100 100
Heat/humidity 95% RH 40 80 75 65
GENERAL INFORMATION
This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected as
a sealant for chlorine or other strong oxidizing materials
For safe handling information on this product, consult the
Material Safety Data Sheet (MSDS).
Directions for use:
1. For best performance bond surfaces should be clean and
free from grease.
2. This product performs best in thin bond gaps (0.05 mm).
3. Excess adhesive can be dissolved with Loctite cleanup
solvents, nitromethane or acetone.
Loctite Material Specification
LMS
LMS dated December-02, 2002. Test reports for each batch
are available for the indicated properties. LMS test reports
include selected QC test parameters considered appropriate to
specifications for customer use. Additionally, comprehensive
controls are in place to assure product quality and
consistency. Special customer specification requirements may
be coordinated through Henkel Quality.
Storage
Store product in the unopened container in a dry location.
Storage information may be indicated on the product container
labeling.
Optimal Storage: 2 °C to 8 °C. Storage below 2 °C or
greater than 8 °C can adversely affect product properties.
Material removed from containers may be contaminated during
use. Do not return product to the original container. Henkel
Corporation cannot assume responsibility for product which
has been contaminated or stored under conditions other than
those previously indicated. If additional information is required,
please contact your local Technical Service Center or
Customer Service Representative.
Conversions
(°C x 1.8) + 32 = °F
kV/mm x 25.4 = V/mil
mm / 25.4 = inches
µm / 25.4 = mil
N x 0.225 = lb
N/mm x 5.71 = lb/in
N/mm² x 145 = psi
MPa x 145 = psi
N·m x 8.851 = lb·in
N·m x 0.738 = lb·ft
N·mm x 0.142 = oz·in
mPa·s = cP
Henkel Americas
+860.571.5100
Henkel Europe
+49.89.320800.1800
Henkel Asia Pacific
+86.21.2891.8863
For the most direct access to local sales and technical support visit: www.henkel.com/industrial
Documentation Provided By HMC Electronics
33 Springdale Ave. Canton, MA 02021
http://www.hmcelectronics.com
(800) 482-4440
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