HMC Electronics 32430 Loctite 324 Speedbonder, High Impact Adhesive - 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 -1 80×10 -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