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      万华HB-75MX固化剂 HDI缩二脲脂肪族聚异氰酸酯 高固含耐黄变 双组份聚氨酯工业面漆专用固化剂

      万华WANNATE? HB-75MX为HDI缩二脲型脂肪族多异氰酸酯固化剂,固含量75%混合溶剂(PMA + 二甲苯)溶解,外观为无色至浅黄透明液体。产品 NCO 含量 16.2~16.8%,游离 HDI 单体低于 0.5%,低毒低挥发,耐黄变性能优异。 固化漆膜保光保色性突出,耐候、耐酸碱、耐化学品腐蚀,附着力与力学强度高,既可常温自干,也可低温烘烤固化。广泛用于双组分聚氨酯面漆:汽车原厂漆与修补漆、工程机械涂料、金属重防腐、塑料面漆、工业设备涂装等体系,与丙烯酸、聚酯多元醇配伍性良好,是高耐候面漆主流固化剂原料。

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