Transparent plastic composite
View Patent ↗The invention describes a transparent plastics composite composed of PMMA and TPU with excellent mechanical properties.
1. A plastic composite, comprising:
a first poly(meth)acrylate layer;
a second poly(meth)acrylate layer; and
a layer comprising a thermoplastic polyurethane provided between the first poly(meth)acrylate layer and the second poly(meth)acrylate layer;
wherein:
the first poly(meth)acrylate layer is free of polyurethane elastomers;
the second poly(meth)acrylate layer is free of polyurethane elastomers;
a thickness of the first poly(meth)acrylate layer is from 0.5 to 6 mm;
a thickness of the second poly(meth)acrylate layer is from 0.5 to 6 mm; and
a thickness of the layer comprising the thermoplastic polyurethane is from 0.5 to 5 mm.
2. The plastic composite according to claim 1 , wherein a scratch-resistant layer is provided on at least one of a surface of the first poly(meth)acrylate layer opposite from the layer comprising the thermoplastic polyurethane and a surface of the second poly(meth)acrylate layer opposite from the layer comprising the thermoplastic polyurethane.
3. The plastic composite according to claim 1 , wherein at least one of the first poly(meth)acrylate layer and the second poly(meth)acrylate layer is colored.
4. The plastic composite according to claim 1 , wherein at least one of the first poly(meth)acrylate layer and the second poly(meth)acrylate layer comprises an IR-reflective pigment.
5. The plastic composite according to claim 1 , wherein at least one of the first poly(meth)acrylate layer and the second poly(meth)acrylate layer comprises a UV absorber.
6. The plastic composite according to claim 1 , wherein at least one of the first poly(meth)acrylate(meth)acrylate layer and the second poly(meth)acrylate layer comprises an impact modifier.
7. The plastic composite according to claim 1 , wherein a thickness of the first poly(meth)acrylate layer and a thickness of the second poly(meth)acrylate layer are the same.
8. A glazing comprising the plastic composite according to claim 1 .
9. A component for a noise barrier comprising the plastic composite according to claim 1 .
10. The component according to claim 9 , wherein a thickness of the first poly(meth)acrylate layer and a thickness of the second poly(meth)acrylate layer are the same.
11. A bodywork construction comprising the plastic composite according to claim 1 .
12. A bodywork component, equipped with the plastic composite according to claim 1 .
13. A process for production of the plastic composite according to claim 1 , comprising:
heating plastic sheets to a temperature of from 80° C. to 140° C.; and
pressing the plastic sheets together for from 20 to 60 seconds with a force of from 10 to 100 kN.
14. The process according to claim 13 , wherein:
a thickness of the first poly(meth)acrylate layer is from 1 to 3 mm;
a thickness of the second poly(meth)acrylate layer is from 1 to 3 mm; and
a thickness of the layer comprising the thermoplastic polyurethane is from 0.5 to 1.5 mm.
15. The process according to claim 13 , wherein a thickness of the first poly(meth)acrylate layer and a thickness of the second poly(meth)acrylate layer are the same.