Resin for composite structures
First Claim
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1. A resin precursor composition comprising:
- an isocyanate component;
a first polyol having a molecular weight of between about 600 and 800 and an OH index of between about 200 and 300 mgOH/g;
a second polyol having a molecular weight of between about 100 and 300 and an OH index of between about 935 and 1,200 mgOH/g;
wherein the first polyol and the second polyol form a blend that has an OH index of between about 350 and 700 mgOH/g; and
wherein the cured resin precursor composition has an elastic modulus of between about 350,000 and 500,000 psi and an elongation-to-failure of between about 6% and 15%.
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Abstract
A resin precursor composition includes an isocyanate component, a first polyol having a molecular weight of between approximately 600 and 800 and an OH index of between approximately 200 and 300 mgOH/g, and a second polyol having a molecular weight of between approximately 100 and 300 and an OH index of between approximately 800 and 1,200 mgOH/g.
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Citations
27 Claims
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1. A resin precursor composition comprising:
- an isocyanate component;
a first polyol having a molecular weight of between about 600 and 800 and an OH index of between about 200 and 300 mgOH/g;a second polyol having a molecular weight of between about 100 and 300 and an OH index of between about 935 and 1,200 mgOH/g; wherein the first polyol and the second polyol form a blend that has an OH index of between about 350 and 700 mgOH/g; and wherein the cured resin precursor composition has an elastic modulus of between about 350,000 and 500,000 psi and an elongation-to-failure of between about 6% and 15%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 10, 11, 12, 19, 26, 27)
- an isocyanate component;
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8. A resin precursor composition comprising:
- an isocyanate component;
a first polyol having a molecular weight of between about 600 and 800 and an OH index of between about 200 and 300 mgOH/g; a second polyol having a molecular weight of between about 100 and 300 and an OH index of between about 935 and 1,200 mgOH/g; and a third polyol having a molecular weight of between about 200 and 300 and an OH index of between about 500 and 700 mgOH/g; and wherein the first polyol, the second polyol, and the third polyol form a blend having an OH index between about 350 and 750 mgOH/g; and wherein the cured resin precursor composition has an elastic modulus of between between about 350,000 and 500,000 psi and an elongation-to-failure of between about 6% and 15%. - View Dependent Claims (9, 20, 21, 22, 23, 24, 25)
- an isocyanate component;
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13. A method for producing a resin precursor composition comprising:
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mixing at least˜
three polyether polyols with a mold release material and a filler material to form a first resin precursor component; andmixing a second component with the first component to form a resin precursor composition, the second component comprising an isocyanate material; wherein a first of the three polyether polyols has a molecular weight of between about 600 and 800 and an OH index of between about 200 and 300 mgOH/g and a second of the three polyether polyols has a molecular weight of between about 100 and 300 and an OH index of between about 935 and 1,200 mgOH/g and the third of the three polyether polyols has a molecular weight of between about 200 and 300 and an OH index of between about 500 and 700 mgOH/g; wherein the first polyol, the second polyol, and the third polyol form a blend having an OH index between about 350 and 750 mgOH/g; and wherein the cured resin precursor composition has an elastic modulus of between about 350,000 and 500,000 psi and an elongation-to-failure of between about 6% and 15%. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification