特价原装汉高乐泰loctite 352UV胶粘剂紫外线固化

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产品简介
乐泰®产品352 是一种单组分，高粘度的结构胶粘
剂。当该产品暴露于紫外光下，加热或使用表面
活化剂缺氧的情况下均会固化。该胶粘剂适合于
大部分材料的粘接。固化后，产品352 变得坚韧
易弯曲，使它具有极好的耐振动和抗冲击性能。
典型用途
产品 352 在工业应用中主要用于粘接，密封或涂
覆金属和玻璃部件。典型的应用包括粘接电子设
备，仪表和装饰元件。

PRODUCT DEscriptION
LOCTITE® Product 352 is a single component, high viscosity
anaerobic structural adhesive suitable for bonding a wide
range of materials. This product cures when exposed to
suitable ultra- violet radiation. It can also bond surfaces
treated with a surface activator. When cured, it is highly
resistant to vibration and impact forces.
TYPICAL APPLICATIONS
Used to bond, seal, or coat metal and glass components in
industrial applications. Typical uses include unitising electrical
devices, appliance parts, and decorative components.
PROPERTIES OF UNCURED MATERIAL
Typical
Value Range
Chemical Type Modified Acrylic
Appearance Clear- Amber liquid
Specific Gravity @ 25°C 1.10
Viscosity @ 25°C, mPa.s (cP)
Brookfield RVF
Spindle 6 @ 20 rpm 19,500 14,000 to 25,000
DIN 54453, MV
D = 36 s-1 after t = 180secs 21,000 12,000 to 30,000
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, ASTM D696, K-1 80 x 10-6
Coefficient of thermal conductivity, ASTM C177, Wm-1 K-1 0.1
Specific Heat , kJ.kg-1K-1 0.3
Hardness, ASTM D2240 (Shore D) 60
Electrical Properties Constant Loss
Dielectric constant & loss, ASTM D150, @ 1kHz 5.2 0.03
Volume resistivity, ASTM D257, W.cm 8x1012
Dielectric strength, ASTM D149, kV/mm 25
PERFORMANCE OF CURED MATERIAL
(Cured 40 secs @ 100mW/cm2, 365nm UV)
Typical
Value Range
Shear strength on steel, ASTM D1002, N/mm2
Act. N 19 13 to 25
(psi) (2760) (1890 to 3630)
Tensile strength
Grit blasted mild steel to glass, N/mm2 12 5 to 18
(psi) (1740) (730 to 2610)
Tensile strength is measured using a test method based on
ASTM D2095. A metal pin (Ø 12.7mm 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.

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 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 40
mW/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 (100 mW/cm2 minimum).
Cooling should be provided be provided for temperature
sensitive substrate such as thermoplastic. 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
Product shall be ideally stored in a cool, dry location in
unopened containers at a temperature between 8°C to 28°C
(46°F to 82°F) unless otherwise labelled. Optimal storage is
at the lower half of this temperature range. To prevent
contamination of unused product, do not return any material to
its original container.

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