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首页> 外文期刊>Journal of Applied Polymer Science >Copper-amine complexes as new catalysts for rigid polyurethane foam preparations
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Copper-amine complexes as new catalysts for rigid polyurethane foam preparations

机译：铜胺配合物作为硬质聚氨酯泡沫塑料制备的新催化剂

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A new class of catalyst for the preparation of rigid polyurethane (RPUR) foams was developed. Metal(II)-amine complexes [M(en) _2 and M(trien), where M = Cu or Ni, en = ethylenediamine, and trien = triethylenetetramine] were synthesized and used as catalysts in the preparation of RPUR foams. The catalytic activity of the metal(II)-amine complexes and properties of the RPUR foams were investigated and compared to those prepared by N,N- dimethylcyclohexylamine (DMCHA), which is a common commercial tertiary amine catalyst used in the preparation of RPUR foams. The use of M(en) _2 and M(trien) can improve the working environment in RPUR foam processing because DMCHA and other commercial tertiary amine catalysts have a strong odor, whereas M(en) _2 and M(trien) do not have any odor. The reaction times in RPUR foam preparation, namely, cream time, gel time, tack-free time, and rise time, were investigated. These data indicated that the copper-ethylenediamine complex [Cu(en) _2] and copper-triethylenetetramine complex [Cu(trien)] had comparable catalytic activity to DMCHA, whereas the catalytic activity of the nickel complexes was not good. Attenuated total reflection-IR spectroscopy of the RPUR foams prepared with Cu(en) _2 and Cu(trien) showed quantitative isocyanate (NCO) conversion. The density and compressive strength of the RPUR foams prepared from Cu(en) _2 and Cu(trien) were comparable to those prepared from DMCHA.
机译：开发了用于制备硬质聚氨酯（RPUR）泡沫的新型催化剂。合成了金属（II）-胺配合物[M（en）_2和M（trien），其中M = Cu或Ni，en =乙二胺，trien =三亚乙基四胺]，并用作制备RPUR泡沫的催化剂。研究了金属（II）-胺配合物的催化活性和RPUR泡沫的性能，并将其与由N，N-二甲基环己胺（DMCHA）制备的NDM进行比较，后者是用于制备RPUR泡沫的常见商业叔胺催化剂。使用M（en）_2和M（trien）可以改善RPUR泡沫加工的工作环境，因为DMCHA和其他商用叔胺催化剂具有强烈的气味，而M（en）_2和M（trien）没有任何气味。气味。研究了RPUR泡沫制备中的反应时间，即乳化时间，胶凝时间，不粘手时间和上升时间。这些数据表明，铜-乙二胺配合物[Cu（en）_2]和铜-三亚乙基四胺配合物[Cu（trien）]具有与DMCHA相当的催化活性，而镍配合物的催化活性不好。用Cu（en）_2和Cu（trien）制备的RPUR泡沫的衰减全反射红外光谱显示定量的异氰酸酯（NCO）转化率。由Cu（en）_2和Cu（trien）制备的RPUR泡沫的密度和抗压强度与由DMCHA制备的RPUR泡沫的密度和抗压强度相当。

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