Glass struts for vacuum glazing units for insulating glass units
A pillar and glass technology, applied in windows/doors, window/door improvement, transportation and packaging, etc.
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example 1
[0088] Example 1: The first embodiment of the pillar ( Figure 6A )
[0089] FILTEK Supreme Plus product (3M Company, St. Paul, MN), silica and zirconia nanoparticle-filled methacrylate resins were knife-coated on polymer tools and 2 mil uncoated. Primed between PET sheets. Samples were crosslinked by PET using 4 passes of UV radiation (RPC Industries UV Processor QC 120233AN / DR, Plainfield, IL) at 50 fpm in air. The PET is removed and the cured struts are released from the polymer tool by bending the tool to a smaller radius. Confocal microscopy surface analysis of the UV cured nanocomposite showed that the surface of this pillar was smooth (Ra ~ 500nm) and showed that the pillar was flat with + / - 1 μm variation in height across the entire pillar.
example 2
[0090] Example 2: The second embodiment of the pillar ( Figure 6B )
[0091] Sintered Al 2 o 3 Pillar body .
[0092] A boehmite sol-gel sample was prepared using the following formulation: Alumina- Hydrate powder (1600 parts). The resulting sol-gel was aged for at least 1 hour before coating. The sol-gel was pressed with a putty knife into the triangular shaped cavity of the polymer mold so that the cavity was completely filled. The cavity has a depth of about 250m and is 1mm on each side. The draft angle of the mold sidewalls and bottom was 8°. Before filling the mold with the gel sol, a release agent was applied to the mold, and then excess methanol was removed by heating in an oven at 45°C for 5 minutes. The sol-gel filled molds were placed in a 45°C air convection oven for at least 45 minutes to dry. The formed part was removed from the mold by bending it to a smaller radius, and the strut body was calcined at about 650°C and then saturated with a nitrate s...
example 3
[0094] Example 3: The third embodiment of the pillar ( Figure 6C ) .
[0095] A polymer tool with a triangular cavity comprising a depth of about 250 m, 1 mm on each side and a draft of 8° was filled with FILTEK Supreme Plus product and each sintered Al from Example 2 2 o 3 The strut body is pressed into the resin. Excess resin was scraped off the tool, a 2 mil sheet of unprimed PET was placed on top of the filled tool, and the sample was exposed to 4 passes of UV radiation at 50 fpm in air (RPC Industrial UV Processor QC120233AN / DR, Plainfield, IL (RPC Industries UV Processor QC 120233 AN / DR, Plainfield, IL)) was crosslinked by PET. The encapsulated and planarized struts are released from the polymer tool by bending the tool to a smaller radius. A light microscope image of this coated, planarized strut at 50X shows that the strut appears as an optical core surrounded by opaque nanoparticle resin.
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Abstract
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