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Adhesives
Adhesives
Manufactured Products
 
Adhesive For Fiber Array
(AT3925M, AT9390)
Application: For fixing optical fibers in V-grooves

Fig. Cross sectional view of typical application

Fig. Typical Fiber Array


Ultra Hard, Heat-Resistant UV-Curable Adhesive(AT3925M)

Features

  • The elastic modulus remains high at elevated temperatures ( dyn/cm2 or more at 150).
  • Capable of resisting temperatures as high as 200 or more (glass-transition temperature, Tg>200).
  • Hard enough to be cut and polished.

Fig. Comparison of Elastic modullus between AT3925M and other products.


Main properties of : AT3925M and AT9390

Name (Main Components)

AT3925M (Epoxy)

AT9390 (Epoxy)

Conditions

External appearance

Light amber, transparent

Light amber, transparent

Viscosity (cP) (25)

284

600

Curing

Curing Time (min)

10 *1

10 *2

Shrinkage during curing (%)

4

4

Properties after curing

Glass Transition Temperature ()

233

131 ~ 137

Modulus ( dyn/cm2)

25

1.3

0.97

150

0.73

0.83

Refractive index

1.520

1.495

Optical transmittance (%)
[ = 1.3m, 1mm]

88

86

Thermal expansion coefficient
( )

7

8~9

Adhesion Strength (kgf/cm2)[Glass]

>181

>125


(Note)
This property data is a measured value on samples instead of the guaranteed value.

*1 UV irradiation : 30mW/cm2 (365nm) Heat treatment : 100 ~ 150 for 1 ~ 2h
*2UV irradiation : 30mW/cm2 (365nm) Heat treatment : 100 for 2h

 
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