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Adhesives
Adhesives
Manufactured Products
 
Ultra Hard, Heat-Resistant UV-Curable Adhesives
(NA3925)

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.

Application:
For fixing optical
fibers in V-grooves


Main properties of
Ultra Hard, Heat-Resistant Adhesive (NA3925M),
Adhesives for assembling optical fiber arrays (AT9390)

Name (Main Components)

NA3925 (Epoxy)

AT9390 (Epoxy)

Conditions

External appearance

Light amber, transparent

Light amber, transparent

Viscosity (cP) [23)

185

1580

Curing

Curing Time (min)

5~10

10

Shrinkage during curing (%)

4

4

Properties after curing

Glass Transition Temperature ()

205

105~127

Modulus ( dyn/cm2)

25

1.1

0.79

160

0.55

0.59

Refractive index

1.52

1.49

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

92

92

Thermal expansion coefficient
( )

8~9

8~9

Adhesion Strength (kgf/cm2)[Glass]

>181

>181

 
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