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Adhesives
Adhesives
Manufactured Products
 
Humidity-Resistant Optical Adhesive
(AT6001, AT8224, AT8378)

Moisture Resistant adhesiveness


Moisture Resistance of Bonded Area of Pyrex® Glass


�@

Testing time (h) at 75, 90% RH

Adhesive

500

2000

3000

5000

AT6001

AT6177

Commercial product-1

Commercial product-2


Commercial product-1,-2:UV acrylate x:Peeling occurred



How to Test Moisture Resistance of the Bonded Areas

Close-up Views of the Optical Fibers


Results of Moisture Resistance Testing of the Bonded Areas

 

at 75, 90% RH

Testing time (h) at 121, 100% RH

Adhesive*

Tg ()

1000

2000

3000

5000

1

5

10

20

T6001

1.51

-3

0/5**

0

0

0

0/3

0

0

0

AT6001 High-Tg version

1.51

92-109

-

-

-

-

0/44

0

0

0

A4

1.52

155

1/5

5

-

-

3/3

-

-

-

A5

1.48

51

3/5

3

5

-

3/3

-

-

-

E2

1.49

130

-

-

-

-

3/3

-

-

-


*AT6001 and its high-Tg version: Highly durable acrylic UV-curable optical adhesives
A4, A5: General-purpose acrylic UV-curable optical adhesive
E2: General-purpose epoxy UV-curable optical adhesive
** Number of samples in which peeling occurred at fibers/Total number of adhesive samples


Main properties of Humidity-resistant optical adhesive
for bonding optical waveguide(AT6001, AT6001 High Tg products) and Adhesives for assembling optical devices(AT6177)

Name (Main Components)

 

AT6001 (Acrylate)

 

AT6001 High Tg products #8224 (Acrylate)

AT6001 High Tg products #8378 (Acrylate)

AT6177 (Acrylate) (reference only)

Conditions

External appearance

 

Transparent

 

Light amber

Light amber

Light amber

Viscosity (cP) [25]

 

440

 

180

390

1,470

Curing

Curing Time (min)

 

approx.1

 

approx.1

 

approx.1

Shrinkage during curing (%)

 

6

 

9

8

10

Properties after curing

Glass Transition Temperature ()

 

-3

 

approx.110

86.4

100

Refractive index

 

1.51

 

approx.1.5

approx.1.5

1.51

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

 

91

 

>83

89

90

Adhesion Strength
(kgf/cm2)[Glass]

 

-
>150

 

130~156

�@

>185


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

 
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