新型天冬聚脲的制备及性能研究
Preparation and performance study of novel aspartic polyurea
CO2的高值化利用对双碳目标实现具有重要意义。以六亚甲基二异氰酸酯三聚体(HDI)、聚天门冬氨酸酯(PAE)和1,3-二丁基脲(DBU)为原料,制备出一系列新型聚脲材料(PHPB),并对其结构进行了表征;通过热重分析、拉伸测试、硬度测试、附着力测试等考察其基础性能;通过电化学实验考察了PHPB在3.5% NaCl溶液中对Q235碳钢的防腐性能,探究了不同PAE与DBU配比对聚脲材料性能的影响。实验结果表明,随着1,3-二丁基脲的比例增加,聚脲材料的性能明显提升,拉伸强度最高达到33.3 MPa,且阻抗模值也明显提高。该新型聚脲材料力学性能优异,硬度、附着力良好,能够有效抑制金属腐蚀。
High-value utilization of CO2 is of significant importance for achieving the dual-carbon goals.A novel series of polyurea materials (PHPB) were synthesized using HDI trimer,polyaspartic ester (PAE),and 1,3-dibutylurea (DBU) as raw materials,with their structures thoroughly characterized.The fundamental properties were systematically investigated through thermogravimetric analysis,tensile testing,hardness measurement,and adhesion evaluation.The corrosion protection performance of PHPB coatings for Q235 carbon steel in 3.5% NaCl solution was examined via electrochemical experiments,with particular emphasis on the effect of varying PAE/DBU ratios on material properties.Experimental results demonstrate that increasing the 1,3-dibutylurea content leads to remarkable enhancement in polyurea performance:the tensile strength reaches a maximum of 33.3 MPa,accompanied by significantly improved impedance modulus.This advanced polyurea material exhibits outstanding mechanical properties,excellent hardness and adhesion characteristics,along with effective anti-corrosion for metallic substrates.
CO2利用 / 防腐蚀 / EIS / 力学性能 / 聚脲材料
utilization of CO2 / anti-corrosion / EIS / mechanical properties / polyurea material
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熊南妮, 王春蓉, 陈阳, |
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王鹏, 徐朝阳, 刘建邦, |
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丁来龙, 林佳宇, 王一凡, |
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林炎旭, 管雨, 高双磊, |
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陈国浩, 王贵江, 姜勇, |
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丁敏贞, 卢琳, 高瑾, |
辽宁省自然科学基金(LJ212410149027)
辽宁省振兴人才计划(XLYC1902085)
中国石化创新项目(223020)
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