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TYPICAL CURING PERFORMANCE
乐泰® Product 3781 can be cured by irradiation with
ultraviolet of sufficient intensity. To obtain full cure on surfaces
exposed to air, the intensity of UV radiation at 220 to 260 nm
will accelerate the tack free cure of surface. The cure rate and
ultimate depth of cure will depend on light intensity, the spectral
distribution of the light source, the exposure time and the light
transmittance of the substrates. Following data are measured
at UV intensities of 100mW/cm2
using high pressure mercury
UV lamp.
NOTE: UV intensities where quoted are measured at
365nm using an USHIO UIT-101 UV meter.
Surface Cure Time
This is the time required to achieve a tack free surface.
Tack free time, s 2
Depth of Cure
Depth (cure time 20 s), mm 3.7
TYPICAL PROPERTIES OF CURED MATERIAL
(Cured 120 seconds @ 100 mW/cm2
using a high pressure mercury
light source)
Physical Properties
Coefficient of thermal expansion ASTM E831,
@ 25°C, /°C 140 x 10-6
80 to 120°C, /°C 180 x 10-6
Hardness (Shore D), ASTM D2240 82
Water absorption, JIS K6911, 24 hrs @ 25°C, % 1.7
Glass transition temperature (DMTA), °C 68
Storage
Maximum shelf life may be obtained when product is stored in
a cool, dry location at a temperature between 10°C to 27°C.
典型的固化性能
乐泰®产品3781可以通过照射来治愈
紫外线强度足够强。获得表面上的完全固化
暴露在空气中，紫外线辐射强度在220〜260nm
将加速表面的无粘性固化。治愈率和
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