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US 11,401,639 B2Granted
Corrosion-resistant non-woven for pipe liner pultrusion applications
AssigneeOwens Corning Intellectual Capital, LLC
InventorsJianhui Wu, Kevin Spoo, Jeff Pessell
Life of this patent
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Abstract
A non-woven chopped fiber mat includes a mixture of glass fibers and synthetic fibers. The non-woven mat is formed using a binder composition that includes a binder resin, a coupling agent, and a corrosion inhibitor. The non-woven mat is non-corrosive and resistant to volatile unsaturated monomers such as styrene, but still remains fully compatible with solvent-containing polyester resins, such that it can be used in various pultruded products.
Claims9
A non-woven mat comprising:
- a plurality of reinforcing fibers;
- and
- a binder composition comprising a binder resin, a coupling agent, and a corrosion inhibitor,
- wherein the binder composition is non-corrosive,
- wherein the binder resin comprises a thermoset material, a thermoplastic material, or a combination thereof, and
- wherein the non-woven mat exhibits a tensile strength of at least 1.0 lb/ft after being soaked in a 100% styrene monomer for 10 minutes;
- wherein the corrosion inhibitor is triethanolamine, wherein said corrosion inhibitor is present in the binder composition from 0.05 to 15.0 wt. %, based on the total solids in the binder composition.
4 more elements
Dependencies are inferred from the claim text.