腰果酚/癸二胺型苯并噁嗪增韧双酚A-苯胺型噁嗪树脂的研究  

Preparation and Study of Toughened Bisphenol A-type Benzoxazine Resins Modified by Cardanol/1,10-diaminodecane based Benzoxazine via the Renewable Resources

作　　者：梁佩茵 周国富 Liang Peiyin;Zhou Guofu(Guangdong Provincial Key Laboratory of Optical Information Materials and Technology,Institute of Electronic Paper Displays,South China Academy of Advanced Optoelectronics,South China Normal University,Guangzhou 510006,China)

机构地区：[1]华南师范大学,华南先进光电子研究院,广东省光信息材料与技术重点实验室,彩色动态电子纸显示技术研究所,广东广州510006

出　　处：《广东化工》2022年第24期83-87,共5页Guangdong Chemical Industry

基　　金：国家重点研发计划项目(2021YFB3600601);广东省光信息材料与技术重点实验室(No.2017B030301007);广州市类纸显示材料与器件重点实验室(No.201705030007)对本研究的资助;国家高等学校学科创新引智计划111引智基地项目(D16009)。

摘　　要：采用来源于可再生资源的腰果酚(Cardanol,可再生酚类化合物)、癸二胺(1,10-diaminodecane)和多聚甲醛为原料合成了腰果酚/癸二胺型苯并噁嗪单体(C-d),通过红外光谱(IR)、凝胶渗透色谱(GPC)、核磁共振氢谱(1H-NMR)证明了其分子结构。差热扫描分析(DSC),热重分析(TGA)测试结果表明,其树脂的起始固化温度为215℃,峰值固化温度为256.52℃。通过热固化工艺得到自固化产物PC-d,并研究其热固化行为、动态力学性能和热分解行为,PC-d的玻璃化转变温度为-20℃,具有良好的加工性能。此外,通过基于腰果酚的苯并噁嗪C-d与传统双酚A-苯胺型苯并噁嗪(B-a)按照不同的比例共混形成二元共混体系。当C-d含量为10%时,聚苯并噁嗪共聚树脂的玻璃化转变温度169℃以上,800℃下残碳率36%以上,C-d/B-a体系固化物的冲击强度是B-a均聚体系固化物的3.71倍,表明聚苯并噁嗪共聚树脂的热稳定性较为稳定,且C-d中的长脂肪链有效改善共聚体系固化物的韧性,对于研究可再生资源的有效利用具有重要意义。The benzoxazine(C-d) was synthesised by using cardanol(renewable phenolic compound), 1,10-diaminodecane and p-formaldehyde, and its structure and purity of the monomer was confirmed by Fourier transform infrared spectroscopy(FTIR), gel permeation chromatography(GPC), nuclear magnetic resonance spectroscopy(NMR). Data obtained from differential thermal scanning(DSC), thermal gravimetric analysis(TGA) infer that the curing initiation temperature of C-d was 215 ℃ and the peak maximum at 256.52 ℃. The C-d polybenzoxazine was prepared by conventional thermal-curing process and its curing behaviour, dynamic mechanical properties and thermal decomposition behavior were studied, which indicated that the glass transition temperature of C-d was-20 ℃. Moreover, this cardanol based benzoxazine was blended in varying proportions with conventional bisphenol A based benzoxazine(B-a) as C-d/B-a binary system. when the content of C-d is 10% of C-d/B-a after curing, polybenzoxazine’s glass transition temperature(Tg) was higher than 169 ℃, the 800 ℃ char yield above 36 %, thermal stability remain stable. The impact strength attained 3.71 times as B-a polybenzoxazine, which indicate that the flexible long-chain in C-d improved toughness in co-curing resins, showing a positive significance to study the effective utilization of renewable resources.

关 键 词：苯并噁嗪 腰果酚 癸二胺 固化 增韧 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]