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Synthesis, Monomer Removal, Modification, and Coating Performances of Biobased Pentamethylene Diisocyanate Isocyanurate Trimers
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-02-03 , DOI: 10.1021/acs.iecr.1c04673 Jinlei Zeng 1 , Yue Yang 1 , Yibo Tang 1 , Xu Xu 1 , Xu Chen 1 , Ganlu Li 1 , Kequan Chen 1 , Hui Li 1 , Pingkai Ouyang 1 , Weimin Tan 2 , Jianjun Ma 3 , Yaozong Liu 3 , Ruiyuan Liang 3
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-02-03 , DOI: 10.1021/acs.iecr.1c04673 Jinlei Zeng 1 , Yue Yang 1 , Yibo Tang 1 , Xu Xu 1 , Xu Chen 1 , Ganlu Li 1 , Kequan Chen 1 , Hui Li 1 , Pingkai Ouyang 1 , Weimin Tan 2 , Jianjun Ma 3 , Yaozong Liu 3 , Ruiyuan Liang 3
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The new green biobased pentamethylene diisocyanate (PDI) trimer curing agent has lower-life-cycle carbon emissions than the petrochemical-based hexamethylene diisocyanate (HDI) trimer curing agent, and its performance is similar to that of petrochemical-based products. This work focused on the synthesis, allophanate modification, free PDI monomer removal, and coating performances of PDI isocyanurate trimers. The results showed that optimal synthesis of PDI isocyanurate trimers used 2-hydroxypropyltrimethylisooctanoate ammonium salt (TMR) as a catalyst with 0.4 wt ‰ added and a reaction time of 120 min. The best free PDI monomer removal by molecular distillation used a removal temperature of 130 °C, a scraper speed of 350 rpm, and a feed rate of 3 mL·min–1, with two total removals. Self-made and allophanate-modified PDI isocyanurate trimers showed high values in physical and chemical properties. The water resistance, acid and alkali resistance, and aging resistance of the self-made and allophanate-modified PDI isocyanurate trimers were similar to or even better than those of petrochemical-based HDI products. These results indicate the application potential of biobased PDI-trimer curing agents.
中文翻译：
生物基五亚甲基二异氰酸酯异氰脲酸酯三聚体的合成、单体去除、改性及包覆性能
新型绿色生物基五亚甲基二异氰酸酯（PDI）三聚体固化剂的生命周期碳排放量低于石化基六亚甲基二异氰酸酯（HDI）三聚体固化剂，性能与石化产品相近。这项工作的重点是 PDI 异氰脲酸酯三聚体的合成、脲基甲酸酯改性、游离 PDI 单体去除和涂层性能。结果表明，PDI异氰脲酸酯三聚体的最佳合成以2-羟丙基三甲基异辛酸铵盐（TMR）为催化剂，添加量为0.4 wt ‰，反应时间为120 min。分子蒸馏去除游离 PDI 单体效果最好，去除温度为 130 °C，刮刀速度为 350 rpm，进料速度为 3 mL·min –1, 总共删除了两次。自制和脲基甲酸酯改性的PDI异氰脲酸酯三聚体具有较高的理化性能。自制和脲基甲酸酯改性的PDI异氰脲酸酯三聚体的耐水性、耐酸碱性、耐老化性与石化HDI产品相当甚至更好。这些结果表明了生物基 PDI-三聚体固化剂的应用潜力。
更新日期：2022-02-03
中文翻译：
生物基五亚甲基二异氰酸酯异氰脲酸酯三聚体的合成、单体去除、改性及包覆性能
新型绿色生物基五亚甲基二异氰酸酯（PDI）三聚体固化剂的生命周期碳排放量低于石化基六亚甲基二异氰酸酯（HDI）三聚体固化剂，性能与石化产品相近。这项工作的重点是 PDI 异氰脲酸酯三聚体的合成、脲基甲酸酯改性、游离 PDI 单体去除和涂层性能。结果表明，PDI异氰脲酸酯三聚体的最佳合成以2-羟丙基三甲基异辛酸铵盐（TMR）为催化剂，添加量为0.4 wt ‰，反应时间为120 min。分子蒸馏去除游离 PDI 单体效果最好，去除温度为 130 °C，刮刀速度为 350 rpm，进料速度为 3 mL·min –1, 总共删除了两次。自制和脲基甲酸酯改性的PDI异氰脲酸酯三聚体具有较高的理化性能。自制和脲基甲酸酯改性的PDI异氰脲酸酯三聚体的耐水性、耐酸碱性、耐老化性与石化HDI产品相当甚至更好。这些结果表明了生物基 PDI-三聚体固化剂的应用潜力。
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