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首页> 外文期刊>Journal of Applied Polymer Science >Polyurethane foams from chlorinated and non-chlorinated metathesis modified canola oil polyols
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Polyurethane foams from chlorinated and non-chlorinated metathesis modified canola oil polyols

机译：来自氯化和非氯化复分解的聚氨酯泡沫改性油菜油多元醇

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摘要

The product of 1-butene metathesis of canola triacylglycerol (CMTAG), with shortened structures, terminal double bonds (50% of the total), and oligomers (40% dimer and trimer, and 10% higher oligomers) was used to synthesize novel polyols and polyurethane foams. A non-chlorinated (Pol-1) and a chlorinated polyol (Pol-2) having OH value (170 and 190 mg KOH/g, respectively) were synthesized from CMTAG by epoxidation followed by hydroxylation, and epoxidation followed by hydrogenation, respectively. Both polyols remained liquid below ambient temperature and demonstrated physical characteristics such as viscosity which allowed for the facile preparation of polyurethane foams. The foam obtained with Pol-1 was relatively soft (approximate to 0.32 MPa at 10% strain) and very flexible (recovery approximate to 90%); whereas, the foam obtained with Pol-2 was semi-rigid (approximate to 1.1 MPa at 10% strain and recovery of 64%). The higher strength and rigidity of Pol-2 foam compared to Pol-1 foam is chiefly attributable to the effect of the bulky chlorines on the crosslink density. Importantly, this work highlights that one can improve and control jointly the mechanical properties and deformation recovery ability of bio-based foams by combining primary functional groups, oligomers, and high molar volume molecules in the polyols. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46616.
机译：用缩短的结构，末端双键（总量的50％）和低聚物（40％二聚体和三聚体，10％更高的低聚物）的1-丁烯氨基甘油（CMTAG）的产物用于合成新的多元醇和聚氨酯泡沫。通过环氧化，然后通过环氧化从CMTAG合成具有OH值（分别为170mg KOH / g的氯化多元醇（POL-2），然后分别由羟基化和环氧化合成，然后氢化。两种多元醇在于环境温度以下液体，并证明了物理特性，例如粘度，其粘度允许聚氨酯泡沫的化合物制备。用POL-1获得的泡沫相对较软（近似为10％菌株的0.32MPa），非常柔韧（恢复近似为90％）;然而，用pol-2获得的泡沫是半刚性的（近似为1.1MPa，以10％的菌株和恢复为64％）。与POL-1泡沫相比，POL-2泡沫的强度和刚性的较高强度和刚性主要可归因于庞大氯对交联密度的影响。重要的是，这项工作突出显示，通过将初级官能团，低聚物和高摩尔体积分子在多元醇中组合，可以共同改善和控制生物基泡沫的机械性能和变形回收能力。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,46616。

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