HMC Electronics 40140 User Manual
Technical Data Sheet
LOCTITE® 401™
December-2009
PRODUCT DESCRIPTION
LOCTITE® 401™ provides the following product
characteristics:
Technology Cyanoacrylate
Chemical Type Ethyl cyanoacrylate
Appearance (uncured) Transparent, colorless to straw
colored liquid
LMS
Components One part - requires no mixing
Viscosity Low
Cure Humidity
Application Bonding
Key Substrates Metals, Plastics and Elastomers
LOCTITE® 401™ is designed for the assembly of difficultto-bond materials which require uniform stress distribution and
strong tension and/or shear strength. The product provides
rapid bonding of a wide range of materials, including metals,
plastics and elastomers. LOCTITE® 401™ is also suited for
bonding porous materials such as woods, paper, leather and
fabric.
NSF International
Registered to NSF Category P1 for use as a sealant where
there is no possibilty of food contact in and around food
processing areas. Note: This is a regional approval. Please
contact your local Technical Service Center for more
information and clarification.
TYPICAL PROPERTIES OF UNCURED MATERIAL
Specific Gravity @ 25 °C 1.06
Flash Point - See MSDS
Viscosity, Cone & Plate, mPa·s (cP):
Temperature: 25 °C, Shear Rate: 3,000 s
-1
70 to 110
LMS
Viscosity, Brookfield - LVF, 25 °C, mPa·s (cP):
Spindle 1, speed 30 rpm 90 to 140
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 20 to 45
Aluminum 2 to 10
Zinc dichromate 10 to 30
Neoprene <5
Rubber, nitrile <5
ABS 1 to 2
PVC 3 to 10
Polycarbonate 5 to 10
Phenolic <2
Wood (balsa) <1
Wood (oak) 10 to 30
Wood (pine) 10 to 20
Chipboard 5 to 10
Fabric 10 to 20
Leather 5 to 10
Paper 5 to 10
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. Humidity
The rate of cure will depend on the ambient relative humidity.
Higher relative humidity levels result in more rapid speed 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
Cured for 1 week @ 22 °C
Physical Properties:
Coefficient of Thermal Expansion,
ISO 11359-2, K
-1
107×10
-6
Coefficient of Thermal Conductivity, ISO 8302,
W/(m·K)
0.4
Glass Transition Temperature ISO 11359-2, °C 121
Electrical Properties:
Volume Resistivity, IEC 60093, Ω·cm 277×10
15
Surface Resistivity, IEC 60093, Ω 69×10
15
Dielectric Breakdown Strength,
IEC 60243-1, kV/mm
33
Dielectric Constant / Dissipation Factor, IEC 60250:
1-kHz 2.72 / 0.02
1-MHz 2.53 / 0.02
10-MHz 2.42 / 0.01
Documentation Provided By HMC Electronics
33 Springdale Ave. Canton, MA 02021
http://www.hmcelectronics.com
(800) 482-4440
TDS LOCTITE® 401™, December-2009
TYPICAL PERFORMANCE OF CURED MATERIAL
Adhesive Properties
Cured for 10 seconds @ 22 °C
Tensile Strength, ISO 6922:
Buna-N N/mm² ≥6.9
LMS
(psi) (≥1,000)
Cured for 72 hours @ 22 °C
Tensile Strength, ISO 6922:
Buna-N N/mm² 8 to 15
(psi) (1,200 to 2,200)
Steel (grit blasted) N/mm² 7 to 16
(psi) (1,000 to 2,300)
Lap Shear Strength, ISO 4587:
Steel (grit blasted) N/mm² 17 to 24
(psi) (2,500 to 3,500)
Aluminum (etched) N/mm² 2 to 11
(psi) (290 to 1,600)
Zinc dichromate N/mm² 0.5 to 2
(psi) (70 to 290)
ABS N/mm² 7 to 9
(psi) (1,000 to 1,300)
PVC N/mm² 7 to 16
(psi) (1,000 to 2,300)
Phenolic N/mm² 1 to 5
(psi) (150 to 730)
Polycarbonate N/mm² 7 to 11
(psi) (1,000 to 1,600)
Nitrile N/mm² 1 to 2
(psi) (150 to 290)
Neoprene N/mm² 1 to 2
(psi) (150 to 290)
TYPICAL ENVIRONMENTAL RESISTANCE
Cured for 1 week @ 22 °C
Lap Shear Strength, ISO 4587:
Steel (grit blasted)
Hot Strength
Tested at temperature
% Strength @ 22 °C
Temperature, °C
140
120
100
80
60
40
20
0
-40 -20 0 20 40 60 80 100 120
Heat Aging
Aged at temperature indicated and tested @ 22 °C
% Initial Strength @ 22 °C
Exposure Time, hours
125
100
75
50
25
0
0 1000 2000 3000 4000 5000
60 °C
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 5000 h
Motor oil 40 120 110 110 85
Unleaded gasoline 22 85 80 80 75
Ethanol 22 100 105 110 120
Isopropanol 22 100 110 105 120
Water 22 80 70 55 65
98% RH 40 70 60 55 55
Lap Shear Strength, ISO 4587:
Polycarbonate
% of initial strength
Environment °C 100 h 500 h 1000 h 5000 h
Air 22 120 125 115 130
98% RH 40 120 110 120 115
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.
Bond areas should be clean and free from grease. Clean
all surfaces with a Loctite®cleaning solvent and allow to
dry.
2.
Loctite®Primer may be applied to the bond area. Avoid
applying excess Primer. Allow the Primer to dry.
3.
LOCTITE®Activator may be used if necessary. Apply the
LOCTITE®Activator to one bond surface (do not apply
activator to the primed surface where Primer is also
used). Allow the Activator to dry.
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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