A novel polyether polyol was successfully synthesized from cyclohexene oxide (CO), propylene oxide (PO), and poly(propylene glycol) 400 through ring‐opening polymerization, catalyzed by double metal cyanide catalyst for the first time. Then, the obtained cyclohexane‐based polyether polyol (CPOL) further reacted with 4,4′‐diphenylmethane diisocyanate to form reactive polyurethane adhesive (RPUA). The thermal properties and mechanical strength of the RPUA were characterized by differential scanning calorimetry, dynamic mechanical analysis, thermogravimetric analysis, and lap shear strength test. It was found that with the introduction of cyclohexane units, the glass transition temperature (T_g) and thermal stability of the RPUA increased about 122.3% and 3.32%, respectively. Besides, the lap shear strength of the RPUA prepared with the synthesized CPOL was 130.67% higher than the counterpart derived from conventional polyether polyol 2000. Furthermore, compared with RPUA‐PPG, RPUA‐CPOL also exhibited excellent lap shear strength on polycarbonate substrate even when the adhesion joints were immersed into hot water or alkaline solvent. All the above results suggest that the cyclohexane units in polyether polyol have great improvements in the thermal stability and lap shear strength of RPUA.

中文翻译：

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新型含重复环己烷单元的聚醚多元醇及其在反应性聚氨酯胶粘剂中的应用

首次由双金属氰化物催化剂催化的开环聚合反应，成功地由环己烯氧化物（CO），环氧丙烷（PO）和聚丙二醇400合成了一种新型聚醚多元醇。然后，获得的环己烷基聚醚多元醇（CPOL）与4,4'-二苯基甲烷二异氰酸酯进一步反应，形成反应性聚氨酯胶粘剂（RPUA）。通过差示扫描量热法，动态力学分析，热重分析和搭接剪切强度测试来表征RPUA的热性能和机械强度。发现随着环己烷单元的引入，玻璃化转变温度（T _g）和RPUA的热稳定性分别提高了约122.3％和3.32％。此外，用合成的CPOL制备的RPUA的搭接剪切强度比传统聚醚多元醇2000的RPUA高130.67％。此外，与RPUA-PPG相比，RPUA-CPOL在聚碳酸酯基材上也表现出优异的搭接剪切强度将粘合接头浸入热水或碱性溶剂中。所有以上结果表明，聚醚多元醇中的环己烷单元在RPUA的热稳定性和搭接剪切强度方面有很大的提高。