Multilayer polymer structures
A polymer, polar polymer technology, used in layered products, synthetic resin layered products, chemical instruments and methods, etc., can solve problems such as low modulus and failure
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example 1-4
[0067] Example 1-4 . A series of TPO substrates (Metaform 7200 from Mytex Polymers), acrylic cap stock (Solarkote H300 from Arkema Inc.), and different tie layers as described in Table 1 below were prepared. Coextruded samples. All tie layers are commercially available except the experimental PRD940B. Tacryl TM 1080 is a styrene copolymer and PRD940B is a methyl acrylate / ethylene copolymer. Modulus is measured according to ASTM D638.
[0068] Table 1
[0069] example
[0070] Each example was prepared using three Davis standard extruders (1.25 inch main extruder for the TPO base and two 1 inch satellite extruders for the cap stock and tie layer). These extruders were connected to a triple manifold 12 inch sheet die. All melting temperatures are about 210°C. The sheet was polished by passing the sheet through a 12 inch diameter three roll stack. The approximate thickness of each layer is 300 microns (cap layer), 300 microns (tie layer), and 2.2 mm (base).
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