Thermoplastic-based building product and related methods
One exemplary embodiment is directed to a thermoplastic-based building product having a front face with a length and a width, an opposing back face, opposing top and bottom edges each with a thickness. The building product comprises at least one thermoplastic-based support layer, and at least one reinforcing flexing layer having a coefficient of linear thermal expansion (CLTE) of less than or equal to about 15 ppm/° C. over the temperature range of −20° C. to 70° C. The at least one reinforcing flexing layer is at least partially embedded in the at least one thermoplastic-based support layer along a longitudinal axis of the building product.
1. A thermoplastic-based building product useable as a wall board or composite decking having a front face with a length and a width, an opposing back face, opposing top and bottom edges each with a thickness, the building product comprising:
at least one outermost top layer comprising a polymer;
at least one thermoplastic-based support layer; and
at least one reinforcing flexing layer having a coefficient of linear thermal expansion (CLTE) of less than or equal to about 15 ppm/° C. over the temperature range of −20° C. to 70° C., wherein the at least one reinforcing flexing layer is at least partially embedded in the at least one thermoplastic-based support layer along a longitudinal axis of the building product.
2. The building product of claim 1 , wherein the at least one reinforcing flexing layer is a tape selected from fiberglass impregnated tape, carbon fiber impregnated tape, natural fiber impregnated tape, or synthetic fiber impregnated tape.
3. The building product of claim 2 , wherein the tape contains unidirectional fibers.
4. The building product of claim 2 , wherein the tape contains a binder compatible with the at least one thermoplastic-based support layer.
5. The building product of claim 2 , wherein the tape contains an adhesive on at least one surface of the tape.
6. The building product of claim 2 , wherein the tape has been heat bonded or bonded with an adhesive to the at least one thermoplastic-based support layer.
7. The building product of claim 1 , wherein the at least one reinforcing flexing layer comprises a fiberglass impregnated tape containing unidirectional continuous fiberglass fibers.
8. The building product of claim 7 , wherein the at least one reinforcing flexing layer is embedded substantially in the center of the at least one thermoplastic-based support layer.
9. The building product of claim 1 , wherein the at least one reinforcing flexing layer is embedded substantially in the center of the at least one thermoplastic-based support layer.
10. The building product of claim 1 , wherein the building product includes two thermoplastic-based support layers and the at least one reinforcing flexing layer is sandwiched between the two thermoplastic-based support layers.
11. The building product of claim 1 , wherein the building product has a coefficient of thermal expansion of about 7 to about 45 ppm/° C. over the temperature range of −20° C. to 70° C.
12. The building product of claim 1 , wherein the building product has a coefficient of thermal expansion of about 20 to about 40 ppm/° C. over the temperature range of −20° C. to 70° C.
13. The building product of claim 1 , wherein the at least one reinforcing flexing layer has been extruded, calendered, compression molded, blow molded, rotomolded, or laminated with at least one thermoplastic-based support layer.
14. The building product of claim 1 , wherein the at least one thermoplastic-based support layer comprises a thermoplastic polymer selected from at least one of the following: polyvinyl chloride, polyethylene, polypropylene, polystyrene, acrylonitrile butadiene styrene, polycarbonate, polyamide, polyether ether ketone, polybutylene terephthalate, polyoxymethylene, polytetrafluoroethylene, polyester, and combinations thereof.
15. The building product of claim 1 , wherein the thickness of each of the top and bottom edges ranges from about 25 mils to about 1,600 mils.
16. The building product of claim 1 , wherein the outermost top layer is bonded to a surface of the at least one thermoplastic-based support layer.
17. The building product of claim 1 , wherein the building product is a thermoplastic-based wall board.
18. The building product of claim 1 , wherein the building product is an exterior cladding for the surface of a building.
19. The building product of claim 18 , wherein the building product is vinyl siding.
20. The building product of claim 1 , wherein the building product is thermoplastic-based composite decking.
21. The building product of claim 1 , wherein the thermoplastic-based support layer comprises about 5% to 85% by weight fiber reinforcement or filler.
22. A thermoplastic-based building product useable as a wall board or composite decking having a front face with a length and a width, an opposing back face, opposing top and bottom edges each with a thickness, the building product comprising:
at least one outermost top layer comprising a polymer;
at least one thermoplastic-based support layer comprising a thermoplastic polymer selected from at least one of polyvinyl chloride, polyethylene, polypropylene, and combinations thereof; and
at least one reinforcing flexing layer comprising a fiberglass impregnated tape containing unidirectional continuous fiberglass fibers, wherein the at least one reinforcing flexing layer is embedded substantially in the center of the at least one thermoplastic-based support layer along a longitudinal axis of the building product, wherein the at least one reinforcing flexing layer has a coefficient of linear thermal expansion (CLTE) of less than or equal to about 15 ppm/° C. over the temperature range of −20° C. to 70° C.,
wherein the building product has a coefficient of thermal expansion of about 7 to about 45 ppm/° C. over the temperature range of −20° C. to 70° C.