Method for testing cross bonding degree of pressure sensing glue
A technology of cross-linking degree and testing method, which is applied in the direction of measuring device, scattering characteristic measurement, instrument, etc., can solve the problems of inability to achieve real-time monitoring, long time required, complicated steps, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0041] Coat the pressure-sensitive adhesive (manufacturer: Japan SOKEN, item number: TX37) on the PVA substrate, harden it with different dosages of hardeners and cure them at different times (the aging environment is 23.2°C, 50-70% RH). Ripe, measure its gel part, and its result is as shown in table 1:
[0042] Table 1
[0043]
[0044] Then, the PVA substrate coated with pressure-sensitive adhesive is hardened with different dosages of hardeners and matured for different times (the curing environment is 23.2 ° C, 50-70% RH), and then the method described in the present invention is used. Method measures its haze test value (test solvent is ethyl acetate, immersion time is 2 minutes), and its result is as shown in table 2:
[0045] Table 2
[0046]
[0047] Please refer to image 3 and Figure 4 , which respectively show the correlation between the haze test value and the gel part when the hardener is 0.055g and 0.025g. It can be seen from the figure that the haze te...
Embodiment 2
[0050] Four samples of PVA substrates coated with pressure-sensitive adhesive (manufacturer: Japan SOKEN, product number: TX37) with a hardener content of 0.03g and 0.04g were taken respectively (the aging time was 8 days, the aging environment was 23.2°C, 50 ~70%RH), measure its gel part and haze test value (the test solvent is ethyl acetate, the immersion time is 2 minutes), the results are shown in Table 3:
[0051] table 3
[0052]
[0053] It can be seen from Table 3 that the error is less than 1% (the error is even less than 0.3 when the hardener content is 0.04g), and this error is not greater than the error of the gel part measurement method. Therefore, the test method described in the present invention has sufficiently reliable reproducibility.
[0054] Tested with different pairs of solvents
Embodiment 3
[0056] The pressure-sensitive adhesive (manufacturer: Japan SOKEN, item number: TX37) containing different dosages of hardeners was coated on the PVA substrate (the aging time was 7 days, the aging environment was 23.2°C, 50-70% RH), and the Ethanol is used as test solvent (immersion time is two minutes), measures its haze test value %, and the results are as shown in table 4:
[0057] Table 4
[0058] Hardener (g)
0.055
0.04
0.03
0.025
Haze test value%
11.0
13.5
18.1
21.5
Gel fraction %
84.2
77.4
68.1
60.2
[0059] Please refer to Figure 5 , which shows the correlation between the haze test value measured in Example 3 and the gel fraction. It can be seen from the figure that the haze test value is still negatively correlated with the gel part.
[0060] The relationship between different immersion time and the change of haze
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More