文献类型：期刊文献

中文题名：酚醛树脂的物化性质对其发泡行为的影响

英文题名：Effect of Physical and Chemical Properties of Phenol-Formaldehyde Resin on Its Foaming Behaviors

作者：陈峰[1];王艳莉[1];詹亮[1]

机构：[1]华东理工大学化学工程国家重点实验室特种功能高分子材料及相关技术教育部重点实验室上海市多相结构材料化学工程重点实验室,上海200237

年份：2017

卷号：43

期号：6

起止页码：793

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：北大核心:【北大核心2014】；CSCD:【CSCD_E2017_2018】；

基金：国家自然科学基金(51472086;51002051);上海市自然科学基金(12ZR1407200)

语种：中文

中文关键词：酚醛树脂;泡沫炭;发泡机理

外文关键词：phenol-formaldehyde resin;carbon foam;foaming mechanism

摘要：以4种酚醛树脂为原料,在不添加固化剂的前提下,通过构建酚醛树脂的物化性质与发泡工艺和泡沫炭孔结构的内在关系来完善自发泡机理。研究结果表明:当不添加固化剂时,酚醛树脂的裂解行为及其黏-温特性是影响其发泡行为的关键因素;发泡过程中,当酚醛树脂的黏度低于2×104 Pa·s时,可以制得球形、孔径为300~500μm、孔结构均一的泡沫炭;发泡压力将影响泡沫炭孔结构的均一性及泡孔密度。
Carbon foams were prepared without any curing agent using four kinds of commercial phenolformaldehyde resins as raw carbonaceous precursors.To improve the self-foaming mechanism,relationship between physical and chemical properties of phenol-formaldehyde resin,foaming conditions and pore structure of carbon foam was investigated.Without curing agent,the decomposition and viscositytemperature performance of phenol-formaldehyde resin during the foaming process are the main factors on its foaming behaviors.If the viscosity of phenol-formaldehyde resin is less than 2×104 Pa·s during the foaming process,carbon foam with spherical and uniform pore structure can be obtained with pore diameter of 300~500μm.Foaming pressure affects the cell density of carbon foam as well as its homogeneity of pore structure.