ThreeBond 3170B Visible-light-curing resin

ThreeBond 3170B is a one-part, nonsolvent, visible-light-curing resin, in which acrylate is a major component. It cures quickly under irradiation by ultraviolet or visible light at a wavelength of 200 to 500 nm. Thus it reduces the time and labor needed for manufacture. Because it cures under visible light, it is suitable for materials that are opaque to ultraviolet light. It cures in a thicker layer than ultraviolet-curing resins. It is suitable for bonding plastics, glasses, or metals.

·	Cures under irradiation with ultraviolet or visible light in no more than a few tens of seconds.
·	Is suitable for bonding materials that are opaque to ultraviolet light but not to visible light.
·	Has excellent thick-film-curing property.
·	Is suitable for bonding plastics, glasses, or metals.

·	Bonding of electrical parts and optical components
·	Bonding of materials that are transparent to visible light but opaque to ultraviolet light
·	Bonding where especially thick film is needed

Properties before curing

Items	Units	Measured value	Test method	Remarks
Color and appearance	-	Lemon yellow-clear	3TS-201-01
Viscosity	Pa s	1.8	3TS-210-01	25°C Rotor No. 3 at 30rpm
Specific gravity	-	1.04	3TS-213-02	25°C

Properties after curing

Items	Units	Test result	Test method	Remarks
Hardness	-	D70	3TS-215-01	25°C
Curing contraction ratio	%	7.7	3TS-228-01	φ30 1.5g
Water absorption rate	%	2.4	3TS-233-03	Boiled 2 hours φ30 1.5g
Thick-film curing property	mm	3.0(30kJ/m²) 7.9(60kJ/m²) 18(90kJ/m²)	3TS-222-01

Irradiation condition:	High-pressure mercury lamp, 80W/cm
	Main wavelength, 365 nm
	Irradiation distance, 15 cm
	Curing contraction ratio and absorption ratio, 30kJ/m²
Total light volume:	350nm
The test piece was coated on both sides with a layer about 4mm thick. Each side was irradiated in the above conditions, and then hardness was measured.