LOCTITE 4310
Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide
Main features
- Low-Viscosity Dual Cure
- Rapid Exposed-Surface Fixturing
- Fluorescent Process Inspection
Product Description
LOCTITE 4310 is a one-part cyanoacrylate adhesive with UV and visible-light cure plus secondary humidity cure for plastics, rubbers, and metals. Its low-viscosity fluorescent liquid supports controlled dispensing and inspection of applied material. Exposed surfaces can reach tack-free cure in 5 seconds or less under several specified light sources, while humidity cure supports shadowed bond areas. Non-UV fixture times range from under 5 seconds on ABS to 20 to 30 seconds on degreased steel. It is suited to fast assembly processes that need rapid surface cure, thin adhesive flow, and a second cure mechanism.
Key features
- Low-viscosity dual cure: A 100 to 250 mPa s liquid combines UV or visible-light cure with secondary humidity cure.
- Rapid exposed-surface cure: Several documented light sources produce a tack-free surface in 5 seconds or less.
- Fluorescent process inspection: Positive UV fluorescence supports visual confirmation of adhesive placement.
Applications / Suitable for
- Rapid bonding of plastics, rubbers, and metals
- Light curing of exposed adhesive surfaces and fillets
- Disposable medical-device assembly within documented evaluation scope
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Chemistry Type
Ethyl cyanoacrylate with photoinitiator
Color
Transparent, light yellow-green to dark blue-green liquid
The color
Component System
One component
Describes the number of components that must be supplied, mixed, or activated before application or cure.
Specific Gravity
1.06
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.
For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
Thermal Properties
Glass Transition Temperature (Tg)
102 °C
The glass transition temperature for organic adhesives is a temperature region where the polymers change from glassy and brittle to soft and rubbery. Increasing the temperature further continues the softening process as the viscosity drops too. Temperatures between the glass transition temperature and below the decomposition point of the adhesive are the best region for bonding.
The glass-transition temperature Tg of a material characterizes the range of temperatures over which this glass transition occurs.
Linear thermal expansion
56x10^-6 K -1
Physical Properties
Tack-Free Time
≤10 minutes
Viscosity
100 to 250 mPa.s
Viscosity is a measurement of a fluid’s resistance to flow.
Viscosity is commonly measured in centiPoise (cP). One cP is defined as
the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP.
A product like honey would have a much higher viscosity -around 10,000 cPs-
compared to water. As a result, honey would flow much slower out of a tipped glass than
water would.
The viscosity of a material can be decreased with an increase in temperature in
order to better suit an application
Chemical Properties
Water Absorption
2.2 %
Mechanical Properties
Elongation
7.3 %
Elongation is the process of lengthening something.
It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks.
It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.
Peel Strength
3 N/mm
Electrical Properties
Volume Resistivity
10.9×10^15 Ohms⋅cm
Volume resistivity, also called volume resistance, bulk resistance or bulk resistivity is a thickness dependent measurement of the resistivity of a material perpendicular to the plane of the surface.
Physical Properties
Depth of Cure
2 mm
Curing Conditions
Fixture Time
5 to 15 seconds
Additional Information
Technical properties
As-supplied / before-processing properties
Typical values for the product before cure, application, or assembly.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Light yellow-green to dark blue-green liquid | - | As supplied |
| Fluorescence | Positive under UV light | - | As supplied |
| Chemical type | Ethyl cyanoacrylate with photoinitiator | - | As supplied |
| Components | One part | - | No mixing required |
| Specific gravity | 1.06 | - | 25 deg C |
| Viscosity | 100 to 250 | mPa s | Cone and plate, 25 deg C, shear rate 100 s^-1 |
| Cure mechanisms | UV / visible light; secondary humidity | - | Primary exposed-surface cure plus atmospheric-moisture cure |
Technical properties
After-processing / final-state properties
Typical values for the cured or installed product under the listed conditions.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Tack-free time | <=5 | s | Zeta 7411-S, 30 mW/cm^2 measured at 365 nm |
| Fixture time, ABS | <5 | s | Non-UV cure, 22 deg C, 50% RH |
| Fixture time, degreased steel | 20 to 30 | s | Non-UV cure, 22 deg C, 50% RH |
| Glass transition temperature | 102 | deg C | ASTM E 228; cured 100 mW/cm^2 at 365 nm for 30 s per side |
| Shore hardness | 84 | Shore D | ISO 868; cured 100 mW/cm^2 at 365 nm for 30 s per side |
| Tensile strength | 50 | N/mm^2 | ISO 527-3; cured 100 mW/cm^2 at 365 nm for 30 s per side |
| Block shear, polycarbonate to polycarbonate | 22 | N/mm^2 | ISO 13445; cured 100 mW/cm^2 at 365 nm for 30 s |
