Process for forming film on surface of PET (Polyethylene Terephthalate) substrate by adopting conductive macromolecular coating
A technology for conductive polymers and substrate surfaces, applied in conductive coatings, devices for coating liquids on surfaces, special surfaces, etc., can solve the problems of poor flexibility, easy breakage, and high price of indium tin oxide, and achieve low equipment investment , low cost and simple process
Inactive Publication Date: 2013-12-11
中环高科(天津)股份有限公司
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Problems solved by technology
[0002] At present, the touch screen mainly uses indium tin oxide as the conductive layer; because indium tin oxide is expensive, and indium tin oxide is poor in flexibility and easy to break, so in the PET substrate film forming process, it is first necessary to find a A new conductive coating to replace the traditional indium tin oxide, and then develop a film-forming process based on the new conductive coating
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[0009] In order to understand the present invention more clearly, the present invention is further described below in conjunction with embodiment, and its concrete steps are as follows:
[0010] Step 1: First, prepare the conductive polymer coating according to the usage amount: mix the CleviosFE-T coating, epoxy resin, and thinner produced by Heraeus in Germany at a volume ratio of 10:1:100, stir with a magnetic stirrer for 30 minutes, and the coating The validity period is 2 to 3 days.
[0011] Step 2: Apply the prepared conductive polymer coating on the surface of PET substrate by roller coating method, coating speed: 20m / min, workpiece coating amount: 5g / m 2 .
[0012] Step 3: Put the coated PET substrate into an oven at 30°C, bake for 30 minutes, and then take it out.
[0013] The above processes are all completed on common equipment known in the industry.
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The invention relates to a machining process of touch screens and particularly relates to a film forming process of a PET (Polyethylene Terephthalate) substrate. The process comprises the following steps: 1. firstly, preparing a conductive macromolecular coating, namely mixing a CleviosFE-T coating produced by the Heraeus Company in German, epoxy resin and a diluting agent in a volume ratio of 10 to 1 to 100 and agitating for 30min+ / -5min; 2. coating the prepared conductive macromolecular coating on the surface of the PET substrate, wherein the coating speed is 20m / min+ / -1m / min, a workpiece coating amount is 5g / m<2>+ / -0.5g / m<2>; 3. putting the coated PET substrate into a drying oven being 30 DEG C+ / -5 DEG C and taking out a product after drying for 30min+ / -5min. According to the PET substrate film layer machined by adopting the machining process, the equipment investment is less, the process is simple, the cost is low and the flexibility of the film layer is good. The condition that electric performance, the chemical performance and the transmittance of the film layer meet the requirements can be obtained by displayed by a sheet resistance tester and a transmittance tester, and results of a salt spray test, a high-temperature and high-humidity test, and a cold and hot impact test.
Description
technical field [0001] The invention relates to a touch screen processing technology, in particular to a film-forming technology using conductive polymer paint on the surface of a PET substrate. Background technique [0002] At present, touch screens mainly use indium tin oxide as the conductive layer; because indium tin oxide is expensive, and indium tin oxide is poor in flexibility and easy to break, so in the film-forming process of PET substrates, it is first necessary to find a The new conductive coating is used to replace the traditional indium tin oxide, and then the film-forming process is formulated according to the new conductive coating. Contents of the invention [0003] In view of the above-mentioned problems in the prior art, the present invention provides a film-forming process using a conductive polymer coating on the surface of a PET substrate. This process prepares a new conductive polymer coating to replace indium tin oxide, and resets the film-forming ...
Claims
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Login to View More IPC IPC(8): B05D5/12B05D7/24B05D3/02C09D201/00C09D163/00C09D5/24C08J7/04
Inventor 白阿香许燃马振军邓建懂杨江涛
Owner 中环高科(天津)股份有限公司