Resin for composite structures
First Claim
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1. A resin precursor composition for use in the production of composite components comprising:
- a mold release material;
a filler material;
an isocyanate component comprising a material selected from the group consisting of diphenylmethane diisocyanate, a polymeric isomer of diphenylmethane diisocyanate, and combinations thereof; and
a blend of three polyether polyols, each of the polyols having a functionality of three in an amount such that the ratio of the isocyanate component to the polyol blend is between approximately 80% and 115% of stoichiometric, the polyether blend comprising;
(a) between approximately 20% and 50% of a first polyol having a molecular weight of between approximately 600 and 800;
(b) between approximately 20% and 40% of a second polyol having a molecular weight of between approximately 200 and 300; and
(c) between approximately 20% and 50% of a third polyol having a molecular weight of between approximately 100 and 300.
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Abstract
A resin precursor composition for use in the production of composite components includes an isocyanate component comprising a material selected from the group consisting of diphenylmethane diisocyanate, a polymeric isomer of diphenylmethane diisocyanate, and combinations thereof. The resin precursor composition also includes at least one polyether polyol having a functionality of three in an amount such that the ratio of the isocyanate component to the at least one polyol is between approximately 80% and 115% of stoichiometric. The resin precursor composition also includes a mold release material and a filler material.
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Citations
43 Claims
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1. A resin precursor composition for use in the production of composite components comprising:
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a mold release material; a filler material; an isocyanate component comprising a material selected from the group consisting of diphenylmethane diisocyanate, a polymeric isomer of diphenylmethane diisocyanate, and combinations thereof; and a blend of three polyether polyols, each of the polyols having a functionality of three in an amount such that the ratio of the isocyanate component to the polyol blend is between approximately 80% and 115% of stoichiometric, the polyether blend comprising; (a) between approximately 20% and 50% of a first polyol having a molecular weight of between approximately 600 and 800; (b) between approximately 20% and 40% of a second polyol having a molecular weight of between approximately 200 and 300; and (c) between approximately 20% and 50% of a third polyol having a molecular weight of between approximately 100 and 300. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A polyurethane resin precursor composition for use in a pultrusion process comprising:
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a mold release material; a filler material; an isocyanate material comprising a material selected from the group consisting of diphenylmethane diisocyanate, a polymeric isomer of diphenylmethane diisocyanate, and combinations thereof; and a polyol component comprising; (a) a first polyether polyol having a functionality of three and a molecular weight of between approximately 600 and 800 and an OH index of between approximately 200 and 300 mgOH/g; (b) a second polyether polyol having a functionality of three and a molecular weight of between approximately 200 and 300 and an OH index of between approximately 500 and 700 mgOH/g; and (c) a third polyether polyol having a functionality of three and a molecular weight of between approximately 100 and 300 and an OH index of between approximately 800 and 1200 mgOH/g; wherein the polyol component comprises between approximately 20% and 50% of the first polyether polyol, between approximately 20 and 40% of the second polyether polyol, and between approximately 20 and 50% of the third polyether polyol. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method for producing a resin precursor composition comprising:
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mixing a polyol blend with a mold release material and a filler material to form a first resin precursor component, the polyol blend comprising between approximately 20% and 50% of a first polyol having a molecular weight of between approximately 600 and 800, between approximately 20% and 40% of a second polyol having a molecular weight of between approximately 200 and 300, and between approximately 20% and 50% of a third polyol having a molecular weight of between approximately 100 and 300; mixing a second component with the first component to form a resin precursor composition, the second component comprising an isocyanate comprising a material selected from the group consisting of diphenylmethane diisocyanate, a polymeric isomer of diphenylmethane diisocyanate, and combinations thereof; wherein the step of mixing the second component with the first component is performed less than approximately five minutes before the resin precursor composition is to be provided to an impregnation die of a pultrusion process. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification