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Thermal and mechanical properties of moisture cured polyurethane-urea /clay nanocomposite coatings have been studied in relationship to clay dispersion and intercalation of clay platelets in the urethane-urea matrix. Coatings were prepared by moisture curing of IPDI capped hydroxyl terminated
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and coating industries. Thermal, mechanical, and surface properties of hyperbranched polyurethane-urea (HBPU) moisture cured coatings have been studied in relationship to chemical structure. Different NCO terminated HBPU prepolymers were prepared by reacting hyperbranched polymers with
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that is generally referred to as the “soft phase”. Likewise the corresponding “hard phase” is born from the di- or polyisocyanates that through water reaction produce a highly crosslinked material with softening temperature well above room temperature.
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rich polyether polyols with HMDI at NCO/OH eq. ratio of 1.2 to obtain isocyanate-terminated polyurethane prepolymers. The prepolymers were cured under atmospheric moisture to make polyurethane–urea free films.
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Kantheti, S.; Sarath, P. S.; Narayan, R.; Raju, K. V. S. N. (2013). "Synthesis and characterization of triazole rich polyether polyols using click chemistry for highly branched polyurethanes".
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Rath, S. K.; Patri, M.; Khakhar, D. V. (2012). "Structure–thermomechanical property correlation of moisture cured poly(urethane-urea)/clay nanocomposite coatings".
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polybutadiene/clay dispersions in a relative humidity (RH) of 50% at 25 °C. Moisture cured polyurethane–urea coatings have been made by reacting
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Mishra, A. K.; Narayan, R.; Raju, K. V. S. N. (2012). "Structure–property correlation study of hyperbranched polyurethane–urea(HBPU)coatings".
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Ren, Dakai; Frazier, Charles E. (2012). "Wood/adhesive interactions and the phase morphology of moisture-cure polyurethane wood adhesives".
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polyurethane-ureas exhibiting microphase-separated morphologies. One phase is derived from a typically flexible (subambient
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65:(IPDI) or 4,4'-bis-methylene cyclohexane diisocyanate (HMDI). A range of NCO/OH eq. ratios from 1.2 - 1.6 was used.
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Handbook of
Pressure-Sensitive Adhesives and Products: - Three Volume Set
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Moisture cure polyurethanes have been widely used in the
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Benedek, Istvan; Feldstein, Mikhail M. (2019-07-05).
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