UV curing in an Inert AtmosphereThis video shows MY Polymers low refractive index coating OF-133, being cured inside a Nitrogen chamber on an optical fiber drawing tower. The fiber, that was just coated by the OF-133 is entering the UV curing section. UV curing is done in such inert conditions to minimize Oxygen competition.
How to coatThis video shows how to produce an even, thickness controled coating, using simple means
Low Refractive Index DemoThis video demonstrates the MY-133-V2000 index of 1.33, which is identical to water. The fish was produced by UV curing inside a transparent mold with small grooves, to create opacity that enhances the optical effect.
At MY Polymers - The Low Refractivve Index Company, we do our best to be responsive to our customers. Any technical issue which arises either before or after you get our materials and start working with them can be discussed directly with our technical staff. Simply press the red button marked ASK A TECHNICAL QUESTION and you'll be asked to describe the issue at hand.
Some technical questions and issues tend to appear more frequently than others. Click the links below to download documents covering some of these issues:
Selecting the right prodcut: See the document How to Select the Right Low Index Adhesive
Low index OCA Applications in Electronic Displays: Liquid Optically Clear Adhesives with Low Refractive Index have the potential to revolutionize Electronic Displays: High efficiency LCD BLU, Improved Touch screens, higher transparency of Transparent Conductor Films (TCF), Auto-sterescopic 3D displays, Digital signage. To read more about the emerging field of Low Index Liquid OCAs, see the document: Applications of Low Index OCAs in Electronic Displays
Curing and Innerting of low refractive index UV cured polymers: How to get good curing? And how to get good innerting (and why is this needed anyhow)? See our Inert Atmosphere Guide
Coating: See below the Video "How to Coat". If you need to fine-tune the coating thickness (or to decrease the viscosity) See the documet How to Dilute. If you plan to do spin coating click here: Spin Coating.
Transmission Vs. Wavelength: See the transmittance curves for 4 materials OF-133, OF-136, OF-1375-A and OF-139-N (they represent other products with the same RI) - click here: Transmittance Curves
What types of products technology are available from MY Polymers
Our technoliges include : UV Cured; Moisture Cured; Hot melt; Solvent based; and Pressure Senstive.
Most of our materials are UV cured; Few are moisture cured.
Why does the material remain tacky after UV curing ?
The most common reason is lack of innerting. Innerting means you have to prevent/minimize exposure of the material to air during curing (when the UV lamp is on). For more details, see the video "UV Curing and INNERTING" in the video gallery.
How thin can I coat your products ?
The thickness of the finished coating can be controlled by 2 means:
The first is obvious - by controlling the thickness of the material you are applying such as the use of doctor blade with thin spacers (see the video titled "How to coat in the video gallery below). The thickness of the coated wet material is about 60% of the thickness of spacers. This figure may vary to some extent, due to fluid dynamicas effects (the speed of moving the coating bar, the viscosity of the material, etc.)
The second tool is to dilute the material. By diluting you can get to very thin final coatings. The principle is that by diluting, the solids content is decreased. For example, if you dilute the original material to 10% solids (90% solvent) , and you coat it to (wet ) thickness of 10 micron, then, after the solventa are evaporated you'll get a 1 micron (wet) thickness. Now you cure it and you get a 1 micron cured (dry) thickness. (Nearly, becuase the material shrinks by few percents during curing)1 micron .
For more details click on the link "How to Dilute" above.