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首页> 外文会议>Composites and Advanced Materials Expo >DEVELOPMENT AND CHARACTERIZATION OF POLYURETHANE FOAMS WITH SUBSTITUTION OF POLYETHER POLYOL WITH SOY-BASED POLYOL Gurjot S. Dhaliwal1, Sudharshan Anandan1, K. Chandrashekhara1, and Paul Nam2 Department of Mechanical and Aerospace Engineering1 Department of Chemistry2 Missouri University of Science and Technology, Rolla MO 65409
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DEVELOPMENT AND CHARACTERIZATION OF POLYURETHANE FOAMS WITH SUBSTITUTION OF POLYETHER POLYOL WITH SOY-BASED POLYOL Gurjot S. Dhaliwal1, Sudharshan Anandan1, K. Chandrashekhara1, and Paul Nam2 Department of Mechanical and Aerospace Engineering1 Department of Chemistry2 Missouri University of Science and Technology, Rolla MO 65409

机译：聚氨酯泡沫替代聚醚多元醇的开发与鉴定用大豆 - 基于大豆多元醇Gurjot S. Dhaliwal1，Sudharshan Anandan1，K.Chandrashekhara1，Paul Nam2机械和航空航天工程系1化学部2密苏里州科技大学，罗拉莫65409

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Bio-based polyols can replace petroleum-based polyols for the reaction with isocyanate groups to prepare a wide range of polyurethane (PU) products. They can be readily derived from various types of abundant and renewable bio-resources, however, their utilization is still limited due to the complex molecular structure and relatively low primary hydroxyl content. This study aims to substitute the petroleum-based polyether polyols with soy-based polyols for the fabrication of rigid PU foams that have comparable or better physical properties required for potential structural and insulation applications. Commercially available soy polyols with 230 mg KOH/g hydroxyl content were blended with the petroleum-based polyether polyols in 5% increments up to 50% substitution to fabricate the rigid PU foams. Isocyanate index of 1.14 was maintained for all formulations. Other constituents such as catalyst, surfactant, and blowing agent were also kept constant. The density, compressive strength, and thermal conductivity of prepared PU foam samples were determined by the ASTM standard methods. Densities of PU samples with 25% substitution were within the 20% range of the control sample. Thermal conductivity values of the PU foams prepared with 25% polyether polyol substitution were similar when compared to the control sample. Compressive strengths of the 25% substitution samples were approximately 30% higher. It was concluded that the polyols blended with 25% soy-based polyols yield the rigid PU foams that have the overall best quality in terms of compressive strength, tensile strength, and insulation.
机译：基于生物的多元醇可以用异氰酸酯基团替代石油基多元醇，以制备各种聚氨酯（PU）产品。它们可以容易地源自各种类型的丰富和可再生的生物资源，然而，由于复杂的分子结构和相对低的原发性羟基含量，它们的利用仍然受到限制。本研究旨在用含有大豆基多元醇代替石油基聚醚多元醇，用于制造具有相当或更好的潜在结构和绝缘应用所需的物理性质的刚性PU泡沫。将具有230mg KOH / G羟基含量的市售大豆多元醇与石油基聚醚多元醇的5％增量，高达50％取代以制造刚性PU泡沫。所有配方都维持了1.14的异氰酸酯指数。其他组分如催化剂，表面活性剂和发泡剂也保持恒定。通过ASTM标准方法测定制备的PU泡沫样品的密度，抗压强度和导热率。具有25％取代的PU样品的密度在对照样品的20％范围内。与对照样品相比，用25％聚醚多元醇取代制备的PU泡沫的热电导值类似。 25％取代样品的抗压强度较高约30％。得出结论是，与25％的大豆基多醇混合的多元醇产生刚性PU泡沫，在抗压强度，拉伸强度和绝缘体方面具有整体最佳质量。

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