Technical Data Sheet
Product 406
Worldwide Version, February 1996
PRODUCT DESCRIPTION
LOCTITE
廬
Product 406 is a low viscosity, fast curing, single
component cyanoacrylate adhesive. It is specifically formulated
for difficult to bond substrates.
TYPICAL APPLICATIONS
Rapid bonding of a wide range of metal, plastic or elastomeric
materials. Particularly suitable for bonding plastic or rubber
(EPDM) parts where very fast fixturing is required.
PROPERTIES OF UNCURED MATERIAL
Typical
Value
Chemical Type
Ethyl Cyanoacrylate
Appearance
Clear liquid
1.05
Specific Gravity @ 25擄C
Viscosity @ 25擄C, mPa.s (cP)
Brookfield LVF
Spindle 1 @ 30 rpm
20
>80
Flash Point (TCC),
擄C
Range
0
0
10
20
30
40
50
60
Cure speed vs. humidity
The rate of cure will depend on the ambient relative humidity.
The graph below shows the tensile strength developed with
time on Buna N rubber at different levels of humidity.
100
%of Full Strength
60%RH
75
40%RH
50
20%RH
25
Cure Time, Seconds
10 to 30
TYPICAL PROPERTIES OF CURED MATERIAL
Physical Properties
Coefficient of thermal expansion, ASTM D696, K
-1
Coefficient of thermal conductivity, ASTM C177, W.m
-
1
K
-1
Glass transition temperature, ASTM E228,
擄C
80 x 10
-
6
0.1
120
TYPICAL CURING PERFORMANCE
Under normal conditions, the surface moisture initiates the
hardening process. Although 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 substrate used. The table
below shows the fixture time achieved on different materials at
22擄C , 50% relative humidity. This is defined as the time to
develop a shear strength of 0.1 N/mm
2
(14.5 psi) tested on
specimens according to ASTM D1002.
Substrate
Steel (degreased)
Aluminium
Zinc dichromate
Neoprene
Nitrile rubber
ABS
PVC
Polycarbonate
Phenolic materials
Fixture Time, seconds
10 to 20
2 to 10
30 to 90
<5
<5
2 to 10
2 to 10
15 to 50
5 to 15
Electrical Properties
Constant
Dielectric constant & loss, 25擄C, ASTM D150,
measured at
100Hz
1kHz
10 kHz
Volume resistivity, ASTM D257,
鈩?cm
Surface resistivity , ASTM D257,
鈩?/div>
Dielectric strength, ASTM D149, kV/mm
2.65
2.75
2.75
Loss
<0.02
<0.02
<0.02
1x
10
16
1x
10
16
25
PERFORMANCE OF CURED MATERIAL
(After 24 hr at 22擄C)
Value
Shear Strength, ASTM D1002, DIN 53283
Grit Blasted Steel, N/mm虜
(psi)
Etched Aluminium, N/mm虜
(psi)
Zinc dichromate, N/mm虜
(psi)
ABS, N/mm虜
(psi)
PVC, N/mm虜
(psi)
Polycarbonate, N/mm虜
(psi)
Phenolic, N/mm虜
(psi)
Neoprene rubber, N/mm虜
(psi)
Nitrile rubber, N/mm虜
(psi)
22
(3200)
15
(2200)
10
(1450)
5*
(700)
5*
(700)
4*
(600)
10
(1450)
10
(1450)
10
(1450)
Typical
Range
18 to 26
(2600 to 3800)
11 to 19
(1600 to 2800)
6 to 14
(870 to 2000)
4 to 6
(600 to 800)
4 to 6
(600 to 800)
3.5 to 4.5
(550 to 650)
5 to 15
(730 to 2900)
5 to 15
(730 to 2200)
5 to 15
(730 to 2200)
Cure speed vs. bond gap
The rate of cure will depend on the bondline gap. High cure
speed is favoured by thin bond lines. Increasing the bond gap
will slow down the rate of cure.
Cure speed vs. activator
Where cure speed is unacceptably long due to large gaps or low
relative humidity applying activator to the surface will improve
cure speed. However , this can reduce the ultimate strength of
the bond, therefore testing is recommended to confirm effect
.
Tensile Strength, ASTM D2095, DIN
53282
Grit Blasted Steel, N/mm虜
18.5
(psi)
(2680)
Buna N rubber, N/mm虜
10
(psi)
(1450)
* Adhesive exceeds strength of bonded material
12 to 25
(1740 to 3630)
5 to 15
(730 to 2200)
NOT FOR PRODUCT SPECIFICATIONS
THE TECHNICAL DATA CONTAINED HEREIN ARE INTENDED AS REFERENCE ONLY.
PLEASE CONTACT LOCTITE CORPORATION QUALITY DEPARTMENT FOR ASSISTANCE AND RECOMMENDATIONS ON SPECIFICATIONS FOR THIS PRODUCT.
ROCKY HILL, CT FAX: +1 (860)-571-5473
DUBLIN, IRELAND FAX: +353-(1)-451 - 9959
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