汉高乐泰370胶水 紫外线固化

乐泰370胶水

PRODUCT DEscriptION
LOCTITE® Product 370 is a single component adhesive which
cures very rapidly when exposed to ultra violet radiation.
TYPICAL APPLICATIONS
LOCTITE® Product 370 is designed for tacking or
encapsulating wires or terminals, protecting them from
atmospheric conditions.
PROPERTIES OF UNCURED MATERIAL

 
Typical
Value Range
Chemical Type Polyurethane acrylate
Appearance Clear to pale yellow
Specific Gravity @ 25°C 1.1
Viscosity @ 25°C, mPa.s (cP)
Brookfield RVT
Spindle #3 @ 10 rpm 7,000 5,500 to 8,500
Flash Point (TCC), °C >93
TYPICAL CURING PERFORMANCE
This product is cured when exposed to UV radiation of 365nm.
To obtain a full cure on surfaces exposed to air, radiation at
250nm is also required. The speed of cure will depend on the
UV intensity as measured at the product surface. Typical cure
condition is 20 - 30 seconds at 100mW/cm² using a medium
pressure, quartz envelope, mercury vapour UV lamp.
NOTE: UV intensities where quoted are measured at
365nm using an OAI 206 UV meter.

TYPICAL PROPERTIES OF CURED MATERIAL
Physical Properties
Coefficient of thermal expansion mm/(m.K) 0.1
Coefficient of thermal conductivity, , W/(m.k) 0.1
Hardness (Shore D), ASTM-D2240 60
Electrical Properties Constant Loss
Dielectric constant & loss, ASTM D150 @ 1 kHz 5 0.04
Volume resistivity, ASTM D257, W - cm 5x1012
Dielectric strength, ASTM D149, kV/mm 20
PERFORMANCE OF CURED MATERIAL
(Cured 20 secs @ 100mW/cm², 365nm UV)
Typical
Value Range
Tensile strength, steel to glass, N/mm2
(modified ASTM D2095/modified DIN 53288)
5 3 to 7
Tensile strength is measured using a test method based on
ASTM D2095. A metal pin (Ø12.7mm x 38mm) is bonded at
one end to 6mm thick Pilkington float glass (50mm x 50mm).
The pin is then pulled axially from the glass.

Chemical / Solvent Resistance
Aged under conditions indicated and tested at 22°C.
Solvent Temp. % Initial Strength retained at
100hr 500hr 1000hr
Gasoline 22°C 70 40 40
1,1,1 Trichloroethane 22°C 100 100 100
Freon TA 22°C 80 90 90
Industrial Methylated Spirit 22°C 40 0 0
Humidy 90% 40°C 0 0 0
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 oxidising materials.

Directions for use
This product is UV sensitive. Exposure to daylight, UV light
and artificial lighting should be kept to a minimum during
storage and handling. Product should be dispensed from
applicators with black feed lines. For best performance bond
surfaces should be clean and free from grease.
UV light cure rate is dependent on lamp intensity, distance
from light source, depth of cure needed or bondline gap and
light transmittance of the substrate through which the radiation
must pass.
Recommended intensity for cure in bondline situation is
5mW/cm2 minimum (measured at the bondline) with an
exposure time of 4-5 times the fixture time at this same
intensity. For dry curing of exposed surfaces higher intensity
UV is required (100W/cm2 minimum).
Cooling should be provided for temperature sensitive substrate
such as thermoplastics. Plastic grades should be checked for
risk of stress cracking when exposed to liquid adhesive.
Excess adhesive can be wiped away with organic solvent.
Bonds should be allowed to cool before subjecting to any
service loads.
Storage
Products shall be ideally stored in a cool, dry location in
unopened containers at a temperature between 8°-21°C (46°-
70°F) unless otherwise labelled. The shelf-life period for a
250ml container is 12 months based upon date of
manufacture. To prevent contamination of unused product,
do not return any material to its original container.

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