BUILDING PRODUCTS HAVING SMOOTH SURFACE TOPOGRAPHY
Disclosed herein are building products comprising a polyurethane formed by the reaction of at least one isocyanate selected from the group consisting of diisocyanates, polyisocyanates and mixtures thereof and at least one polyol in the presence of fly ash and a non-silicone surfactant, wherein, the fly ash is present in an amount from 40% to 90% by weight based on the total weight of the building product; and wherein, the non-silicone surfactant is present in an amount from 0.5% to 2.2% by weight of polyol used to form the polyurethane. The building products possess desirable surfaces that are substantially free of pinholes, while also possessing a modulus, and other properties, that is comparable to or greater than that of building products substantially free of a non-silicone surfactant. Also disclosed are methods for producing the building products.
1 - 30 . (canceled)
31 . A building product comprising:
polyurethane comprising fly ash and a non-silicone surfactant,
wherein the fly ash is present in an amount of 40% to 90% by weight based on the total weight of the building product,
wherein the non-silicone surfactant is present in an amount of 0.5% to 2.2% by weight of the total building product,
wherein a surface roughness of the building product defined by a fine cell structure on the surface; and
wherein the modulus of the building product is comparable to a building product substantially free of the non-silicone surfactant.
32 . The building product of claim 31 , wherein the polyurethane comprises fine closed-cell structure.
33 . The building product of claim 31 , wherein the non-silicone surfactant is present in an amount from 0.7% to 2.0% by weight of the total building product.
34 . The building product of claim 31 , wherein the non-silicone surfactant is present in an amount from 1.0% to 2.0% by weight of the total building product.
35 . The building product of claim 31 , wherein the building product has a modulus from 16 to 17 ksi.
36 . The building product of claim 31 , wherein the building product has a modulus that is from 3% to 7% higher as compared to a building product containing no non-silicone surfactant.
37 . The building product of claim 36 , wherein the building product has a modulus that is from 5% to 7% higher as compared to a building product containing no non-silicone surfactant.
38 . The building product of claim 31 , wherein the building product has a flexural strength from 200 to 350 psi.
39 . The building product of claim 38 , wherein the building product has a flexural strength of 250 to 300 psi.
40 . The building product of claim 31 , wherein the building product has a flexural strength that is greater as compared to a building product containing no non-silicone surfactant.
41 . The building product of claim 31 , wherein the building product has a compressive strength that is greater as compared to a building product containing no non-silicone surfactant.
42 . The building product of claim 31 , wherein the building product has a compressive strength that is comparable to a building product containing no non-silicone surfactant.
43 . The building product of claim 31 , wherein the building product has a lower K-factor as compared to a building product containing no non-silicone surfactant.
44 . The building product of claim 31 , wherein the non-silicone surfactant is selected from the group consisting of a non-ionic non-silicone surfactant, anionic non-silicone surfactant, cationic non-silicone surfactant, ampholytic non-silicone surfactant, semi-polar non-silicone surfactant, zwitterionic non-silicone surfactant, and combinations thereof.
45 . The building product of claim 44 , wherein the non-silicone surfactant is a non-ionic non-silicone surfactant.
46 . The building product of claim 45 , wherein the non-ionic non-silicone surfactant comprises equal to or greater than 35% Dibutylmaleate-N-vinyl-2-pyrrolidinone copolymer.
47 . The building product of claim 31 , wherein the building product is devoid of a silicone surfactant.
48 . The building product of claim 31 , wherein the polyurethane is the sole polymer system in the building product.
49 . The building product of claim 31 , wherein the fly ash is present in an amount from 40% to 60% by weight of the building product.