Transparent conductive film and coating composition therefor
A transparent conductive film and composition technology, applied in the direction of conductive materials dispersed in non-conductive inorganic materials, carbon compounds, conductive layers on insulating carriers, etc., can solve the problems of inability to obtain uniform conductive properties, fiber cutting, and reduced transparency and other issues to achieve the effect of good transparency
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[0085] Hereinafter, although an Example demonstrates this invention in more detail, this invention is not limited to the following Example.
[0086] In addition, below, each physical property value was measured as follows.
[0087]
[0088] 1g of powder is filled in a transparent cylinder with an inner diameter of 70mm and a dispersing plate, and the air with a pressure of 0.1Mpa and a capacity of 1.3 liters is sent from the lower part of the dispersing plate to blow out the powder and make it settle naturally. The height of the powder layer after settling was measured at the point when blowing was performed 5 times. At this time, 6 measurement points were taken and the average value of the 6 points was obtained to calculate the bulk density.
[0089]
[0090] The measurement was performed with a wavelength of 514 nm of an argon laser using LabRam800 manufactured by HORIBA JOBIN YVON.
[0091]
[0092] Using TG-DTA manufactured by MAX SCIENCE, the temperature was raise...
Synthetic example 1
[0111] Synthesize fine carbon fibers using toluene as a raw material by the CVD method.
[0112] A mixture of ferrocene and thiophene is used as a catalyst, and it is carried out under a reducing atmosphere of hydrogen. Toluene, a catalyst, and hydrogen were heated to 380° C., supplied to a production furnace, and thermally decomposed at 1250° C. to obtain a carbon fiber structure (first intermediate). The synthesized intermediate is calcined at 900° C. in nitrogen, and hydrocarbons such as tar are separated to obtain the second intermediate. The R value of this second intermediate measured by Raman spectroscopy was 0.98. In addition, this first intermediate was observed after being dispersed in toluene to prepare a sample for an electron microscope. The obtained TEM photograph is shown in FIG. 1 .
[0113] Further, the second intermediate was heat-treated at a high temperature of 2600° C. in argon, and the obtained aggregate of carbon fiber structures was pulverized by a j...
Embodiment 1～9
[0119] In 100 parts by mass of polyurethane resin solution (non-volatile content: 20%), the carbon fiber structure obtained in the above-mentioned Synthesis Example 1 was added in the ratio shown in Table 1, and a bead mill (DYNO-MILL, Shinmaru Enterprises company ), and then carry out pulverization and dispersion treatment with the following conditions: zirconia microbeads (0.05mm microbead diameter, 0.5mm, 1.0mm, 1.5mm), peripheral speed 10m / s, microbead filling 80 volume%, processing time 2 hours. Thus, a coating composition in which carbon fiber structures are dispersed is produced.
[0120] Using this liquid resin composition, a cured coating film was formed on a glass plate with a predetermined film thickness shown in Table 1, and applicability, total light transmittance, and surface resistance were evaluated. The obtained results are shown in Table 1.
[0121] Furthermore, the dispersion state of the carbon fiber structure in the cured coating film obtained in Example...
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Abstract
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