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    夏军, 袁荞龙, 李川, 王晓蕾, 黄发荣. 含炔丙基苯基醚磷酰胺改性氰酸酯树脂的制备与性能[J]. 功能高分子学报, 2021, 34(3): 293-300. doi: 10.14133/j.cnki.1008-9357.20201216001
    引用本文: 夏军, 袁荞龙, 李川, 王晓蕾, 黄发荣. 含炔丙基苯基醚磷酰胺改性氰酸酯树脂的制备与性能[J]. 功能高分子学报, 2021, 34(3): 293-300. doi: 10.14133/j.cnki.1008-9357.20201216001
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    XIA Jun, YUAN Qiaolong, LI Chuan, WANG Xiaolei, HUANG Farong. Preparation and Proformance of Propargyl Phenyl Ether-Containing Phosphoramide Modified Cyanate Esters[J]. Journal of Functional Polymers, 2021, 34(3): 293-300. doi: 10.14133/j.cnki.1008-9357.20201216001
    Citation: XIA Jun, YUAN Qiaolong, LI Chuan, WANG Xiaolei, HUANG Farong. Preparation and Proformance of Propargyl Phenyl Ether-Containing Phosphoramide Modified Cyanate Esters[J]. Journal of Functional Polymers, 2021, 34(3): 293-300. doi: 10.14133/j.cnki.1008-9357.20201216001
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    含炔丙基苯基醚磷酰胺改性氰酸酯树脂的制备与性能

    Preparation and Proformance of Propargyl Phenyl Ether-Containing Phosphoramide Modified Cyanate Esters

      摘要
    • 摘要: 由对氨基苯基炔丙基醚（appe）与苯膦酰二氯（BPOD）合成了N,N’-二（4-炔丙氧基苯基）-苯基膦酰胺（DPPPA），用核磁共振谱（NMR）和红外光谱（FT-IR）表征了其分子结构。将DPPPA分别与双酚A型二氰酸酯（BADCy）和双酚E型二氰酸酯（BEDCy）在溶液中混合均匀后制备了两种改性氰酸酯（BADCy/DPPPA和BEDCy/DPPPA），对这两种改性氰酸酯的热性能、极限氧指数（LOI）和力学性能等进行了研究。结果表明：DPPPA可明显降低两种氰酸酯的起始固化温度和峰值温度，BADCy/DPPPA和BEDCy/DPPPA的固化物在空气中800 ℃保留率分别由纯氰酸酯的0增加至33%和26%，极限氧指数达39.7%和35.4%，冲击强度分别为11 kJ/m2和14 kJ/m2，但玻璃化转变温度（Tg）分别降低了19 ℃和24 ℃。BADCy/DPPPA浇铸体的弯曲强度和拉伸强度分别为123 MPa和45 MPa，高于BEDCy/DPPPA的相应值。DPPPA改性氰酸酯树脂的吸水率有所降低。

       

      Abstract: N,N’-di(4-propargyloxyphenyl) phosphoramide (DPPPA) was successfully synthesized by nucleophilic substitution of 4-propargyloxy aniline and phenylphosphonyl dichloride. The structure of DPPPA was characterized by nuclear magnetic resonance (NMR) and Fourier transformation infrared (FT-IR) analyses. DPPPA was used to mix with bisphenol A of dicyanate ester (BADCy) and bisphenol E of dicyanate ester (BEDCy) in solution. The DPPPA modified cyanate esters (BADCy/DPPPA and BEDCy/DPPPA) were obtained after the solvent was evaporated under vacuum. The thermal properties, limited oxygen index (LOI) and mechanical properties of the modified cyanate esters were studied. The results show that the residual yield at 800 ℃ in air of the cured BADCy/DPPPA and cured BEDCy/DPPPA increase from 0 to 33% and 26% in comparison with the cured neat cyanate esters, and the LOI of the cured modified cyanate esters reach 39.7% and 35.4%, but the glass transition temperatures of the cured modified cyanate esters decrease by 19 ℃ and 24 ℃, respectively. The flexural and tensile strength of the cured BADCy/DPPPA are 123 MPa and 45 MPa, which are higher than that of the cured BEDCy/DPPPA. The impact strength of the cured BADCy/DPPPA and BEDCy/DPPPA are 11 kJ/m2 and 14 kJ/m2, respectively. The water absorption of the cured neat cyanate esters decreases with blended with DPPPA.

       

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