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大量供应汉高乐泰438瞬干胶 乐泰代理商发货

乐泰438

典型用途：坚韧性

 颜色：黑色

缝隙填充：0.152mm

类型：坚韧性/乙基

粘度：200

拉伸剪切强度：2700

温度范围：-53°C到82°C

固化速度：初固70秒全固24小时

比重：1.1

LOCTITE® 438™ provides the following product
characteristics:
Technology Cyanoacrylate
Chemical Type Ethyl cyanoacrylate
Appearance (uncured) Black liquidLMS
Components One part - requires no mixing
Viscosity Low
Cure Humidity
Application Bonding
Key Substrates Metals, Plastics and Rubbers
LOCTITE® 438™ is a rubber toughened adhesive with
increased flexibility and peel strength along with enhanced
resistance to shock. The product provides rapid bonding on a
wide range of materials, including metals, plastics and
elastomers, as well as porous and absorbent materials like
wood, paper, leather and fabric.
TYPICAL PROPERTIES OF UNCURED MATERIAL
Specific Gravity @ 25 °C 1.1
Flash Point - See MSDS
Viscosity, Cone & Plate, mPa·s (cP):
Temperature: 25 °C, Shear Rate: 1,000 s-1 100 to 250LMS
TYPICAL CURING PERFORMANCE
Under normal conditions, the atmospheric moisture initiates the
curing process. Although full functional strength is developed
in a relatively short time, curing continues for at least 24 hours
before full chemical/solvent resistance is developed.
Cure Speed vs. Substrate
The rate of cure will depend on the substrate used. The table
below shows the fixture time achieved on different materials
at 22 °C / 50 % relative humidity. This is defined as the time to
develop a shear strength of 0.1 N/mm².

Fixture Time, seconds:
Steel (degreased) 30 to 45
Aluminum (Isopropanol wiped) ≤60LMS
Zinc dichromate 105 to 120
Neoprene 30 to 45
Rubber, nitrile <5
SBR 75 to 90
ABS 10 to 20
PVC 65 to 90
Polycarbonate 90 to 105
Phenolic 5 to 10
G-10 Epoxy 20 to 30
Wood (oak) 45 to 60
Wood (balsa) <5
Cure Speed vs. Bond Gap
The rate of cure will depend on the bondline gap. Thin bond
lines result in high cure speeds, increasing the bond gap will
decrease the rate of cure.

TYPICAL PROPERTIES OF CURED MATERIAL
Cured for 24 hours @ 22 °C
Physical Properties:
Coefficient of Thermal Expansion,
ISO 11359-2, K-1
80×10-6
Coefficient of Thermal Conductivity ISO 8302,
W/(m·K)
0.1
Glass Transition Temperature ISO 11359-2, °C 130
Electrical Properties:
Surface Resistivity, IEC 60093, Ω 10×1015
Volume Resistivity, IEC 60093, Ω·cm 10×1015
Dielectric Breakdown Strength,
IEC 60243-1, kV/mm
25
Dielectric Constant / Dissipation Factor, IEC 60250:
0.1-kHz 2.65 / <0.02
1-kHz 2.75 / <0.02
10-kHz 2.75 / <0.02
TYPICAL PERFORMANCE OF CURED MATERIAL
Adhesive Properties
Cured for 24 hours @ 22 °C
Lap Shear Strength, ISO 4587:
Steel (grit blasted) N/mm² 19
(psi) (2,800)
Aluminum N/mm² 18
(psi) (2,600)
Nitrile N/mm² 0.3
(psi) (40)
EPDM N/mm² 0.4
(psi) (60)

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