HMC Electronics 32430 User Manual
Technical Data Sheet
LOCTITE®324™
February-2005
PRODUCT DESCRIPTION
LOCTITE®324™ provides the following product
characteristics:
Technology Acrylic
Chemical Type Urethane methacrylate ester
Appearance (uncured) Transparent light amber liquid
LMS
Components One component - requires no mixing
Viscosity Medium
Cure Anaerobic with activator
Cure Benefit Room temperature cure
Application Bonding
LOCTITE®324™ is used to bond flat parts together. Especially
suitable for joining dissimilar materials, e.g. ferrite to plated
materials in electric motors, loudspeakers, etc. This product is
specifically formulated for toughness and impact strength.
LOCTITE®324™ cures when confined between close fitting
parts with the aid of an activator.
TYPICAL PROPERTIES OF UNCURED MATERIAL
Specific Gravity @ 25 °C 1.06
Flash Point - See MSDS
Viscosity, Brookfield - RVT, 25 °C, mPa·s (cP):
Spindle 6, speed 20 rpm 10,000 to 24,000
LMS
TYPICAL CURING PERFORMANCE
Cure Speed vs. Substrate
The rate of cure will depend on the substrate used. The graph
below shows the shear strength developed with time on grit
blasted steel lap shears compared to different materials and
tested according to ISO 4587. (Activator 7075™ applied to
one surface)
% of Full Strength on Steel
Cure Time
100
75
50
25
0
1min 5min10min 30min 1h 3h 6h 24h 72h
Steel
Aluminum
Cure Speed vs. Bond Gap
The rate of cure will depend on the bondline gap. The following
graph shows the shear strength developed with time on grit
blasted steel lap shears at different controlled gaps and tested
according to ISO 4587. (Activator 7075™ applied to one
surface)
% of Full Strength on Steel
Cure Time
100
75
50
25
0
1min 5min10min 30min 1h 3h 6h 24h 72h
0.25mm
0.5mm
0.05mm
TYPICAL PROPERTIES OF CURED MATERIAL
Physical Properties:
Coefficient of Thermal Expansion, ASTM D 696, K-180×10
-6
Coefficient of Thermal Conductivity, ASTM C 177,
W/(m·K)
0.1
Specific Heat, kJ/(kg·K) 0.3
Elongation, at break, ISO 37, % 170
Tensile Strength, ISO 37 N/mm² 34
(psi) (4,900)
Tensile Modulus, ASTM D 638 N/mm² 614
(psi) (89,000)
Electrical Properties:
Dielectric Constant / Dissipation Factor, IEC 60250:
100-Hz 5.5 / 0.033
1-kHz 5.2 / 0.031
1-MHz 4.5 / 0.004
Volume Resistivity, IEC 60093, Ω·cm 8×10
12
Surface Resistivity, IEC 60093, Ω 2×10
17
Dielectric Breakdown Strength, IEC 60243-1, kV/mm 73
TYPICAL PERFORMANCE OF CURED MATERIAL
Adhesive Properties
After 24 hours @ 22 °C, Activator 7075™ on 1 side
Lap Shear Strength, ISO 4587:
Steel (grit blasted):
0 gap N/mm² 17 to 21
(psi) (2,500 to 3,000)
0.5 mm gap N/mm² 21 to 25
(psi) (3,000 to 3,600)
"T" Peel Strength, ISO 11339:
Steel (grit blasted) N/mm 2.2
(lb/in) (13)
After 24 hours @ 22 °C, Activator 7075™ on 2 sides
Lap Shear Strength, ISO 4587:
Steel (grit blasted):
0.5 mm gap N/mm² ≥14
LMS
(psi) (≥2,030)
Documentation Provided By HMC Electronics
33 Springdale Ave. Canton, MA 02021
http://www.hmcelectronics.com
(800) 482-4440
TDS LOCTITE®324™, February-2005
TYPICAL ENVIRONMENTAL RESISTANCE
Cured for 1 week @ 22 °C, Activator 7075™ on 1 side
Lap Shear Strength, ISO 4587:
Steel (grit blasted)
Hot Strength
Tested at temperature
% Strength @ 22 °C
Temperature, °C
100
75
50
25
0
0 50 100 150
Heat Aging
Aged at temperature indicated and tested @ 22 °C
% Initial Strength @ 22 °C
Hours
150
100
50
0
0 1000 2000 3000 4000 5000
100°C
120°C
150°C
Chemical/Solvent Resistance
Aged under conditions indicated and tested @ 22 °C.
% of initial strength
Environment °C 720 h
Gasoline 87 50
Motor oil 87 100
Auto trans. fluid 87 100
Phosphate ester 87 100
Water/glycol 50/50 150 50
Humidity, 100% RH 50 55
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).
Where aqueous washing systems are used to clean the
surfaces before bonding, it is important to check for
compatibility of the washing solution with the adhesive. In
some cases these aqueous washes can affect the cure and
performance of the adhesive.
This product is not normally recommended for use on plastics
(particularly thermoplastic materials where stress cracking of
the plastic could result). Users are recommended to confirm
compatibility of the product with such substrates.
Directions for use
1. For best performance bond surfaces should be clean and
free from grease.
2. To ensure a fast and reliable cure, Activator 7075™
should be applied to one of the bond surfaces and the
adhesive to the other surface. Parts should be assembled
within 15 minutes.
3. The recommended bondline gap is 0.1mm. Where bond
gaps are large (up to a maximum of 0.5 mm), or faster
cure speed is required, Activator 7075™ should be
applied to both surfaces. Parts should be assembled
immediately (within 1 minute).
4. Excess adhesive can be wiped away with organic solvent.
5. Bond should be held clamped until adhesive has fixtured.
6. Product should be allowed to develop full strength before
subjecting to any service loads (typically 24 to 72 hours
after assembly, depending on bond gap, materials and
ambient conditions).
Loctite Material Specification
LMS
LMS dated September-1, 1995. 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: 8 °C to 21 °C. Storage below 8 °C or
greater than 28 °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.
Henkel Loctite Americas
+860.571.5100
Henkel Loctite Europe
+49.89.9268.0
Henkel Loctite Asia Pacific
+81.45.758.1810
For the most direct access to local sales and technical support visit: www.loctite.com
Documentation Provided By HMC Electronics
33 Springdale Ave. Canton, MA 02021
http://www.hmcelectronics.com
(800) 482-4440
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