硼改性酚醛树脂的制备及其耐热性能研究  

Preparation and heat resistance of boron modified phenolic resin

作　　者：宋东华 毛雅君 邵香敏 孔祥瑞 赵文善 SONG Donghua;MAO Yajun;SHAO Xiangmin;KONG Xiangrui;ZHAO Wenshan(Water Environment and Health Henan Engineering Technology Research Center,Zhengzhou Institute of Industrial Technology,Zhengzhou 451100,Henan,China;College of Chemistry and Molecular Sciences,Henan University,Kaifeng 475004,Henan,China;Wushu College,Henan University,Kaifeng 475001,Henan,China)

机构地区：[1]郑州工业应用技术学院水环境与健康河南省工程技术研究中心,河南郑州451100 [2]河南大学化学与分子科学学院,河南开封475004 [3]河南大学武术学院,河南开封475001

出　　处：《化学研究》2023年第6期533-537,共5页Chemical Research

摘　　要：酚醛树脂因其材料成本低、工艺简单、原料易得等优点,在工业上得到了广泛应用。但由于其耐热性不足以及游离酚含量较高等因素,限制了其应用范围。本文利用硼酸对酚醛树脂进行改性,利用红外和质谱对其结构进行表征,改性后酚醛树脂的耐热性能、游离酚等指标得到明显改善。当失重20%时酚醛树脂改性前后耐热性能提高了56℃,可能是由于硼酚醛树脂中含有硼的三维交联网状结构,提高了树脂的交联密度;游离酚含量从改性前的4.12%降低到了2.21%,说明硼元素的引入改变了苯酚的活性,提高了树脂聚合度。Phenolic resin has been widely used in industry due to its low material cost,simple process and easy access to raw materials,but its application range is limited because of the lack of heat resistance and high content of free phenol.In this paper,the phenolic resin was modified by boric acid,and its structure was characterized by infrared and mass spectra.The heat resistance and free phenol of modified phenolic resin are significantly improved.When the weight loss is 20%,the heat resistance of modified phenolic resin is improved by 56℃,which may be due to the three-dimensional cross-linking network structure of boron in boron modified phenolic resin,increasing the cross-linking density of the resin.The content of free phenol decreases from 4.12%to 2.21%after modification,indicating that the introduction of boron changes the activity of phenol and improves the degree of polymerization of resin.

关 键 词：硼酸 热塑性树脂 耐热性 

分 类 号：O652.7[理学—分析化学]