醋酸锆改性酚醛树脂复合材料的性能研究

复合材料科学与工程 ›› 2014, Vol. 0 ›› Issue (10): 66-69.

醋酸锆改性酚醛树脂复合材料的性能研究

李哲, 周权, 陈麒, 倪礼忠^*

华东理工大学材料科学与工程学院,特种功能高分子材料及相关技术教育部重点实验室,上海200237

收稿日期:2014-04-15 出版日期:2014-10-28 发布日期:2021-09-16
通讯作者: 倪礼忠(1957-),男,教授,研究方向为耐高温树脂及其复合材料,lzhni@ecust.edu.cn。
作者简介:李哲(1987-),女,硕士研究生,研究方向为耐烧蚀酚醛树脂的改性。
基金资助:
国家自然科学基金(51073053)

STUDY ON PROPERTIES OF ZIRCONIUM ACETATE MODIFIED PHENOLIC RESIN COMPOSITES

LI Zhe, ZHOU Quan, CHEN Qi, NI Li-zhong^*

Key Laboratory of Specially Functional Polymeric Materials and Related Technology of the Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

Received:2014-04-15 Online:2014-10-28 Published:2021-09-16

摘要/Abstract

摘要： 以玻璃纤维(GF)为增强材料,制备了玻纤/醋酸锆改性酚醛树脂(GF/ZPF)复合材料,考察了树脂中锆含量对复合材料弯曲强度、线烧蚀率的影响以及复合材料线烧蚀率和烧蚀形貌随烧蚀时间的变化。结果表明,ZPF在1000℃的残炭率为68.7%,相比纯酚醛树脂(PF)提高了21.7%;当树脂中锆含量为14%时,GF/ZPF复合材料的弯曲强度达到最高值642MPa;当锆含量由10%增加到15%时,GF/ZPF复合材料的线烧蚀率由0.0305mm/s降低到0.0208mm/s;随着烧蚀时间的延长,GF/ZPF复合材料的线烧蚀率基本没有变化,表明GF/ZPF复合材料具有优异的耐烧蚀性能。

关键词: 醋酸锆改性酚醛树脂, 残炭率, 复合材料, 弯曲强度, 线烧蚀率

Abstract: Phenolic resin (PF) was widely used as matrix resin for ablative materials due to its excellent mechanical properties and ablation resistance. However, the char yield of traditional phenolic resin was too low to meet the higher requirement on ablative materials. Based on this background, a kind of zirconium acetate modified phenolic resin (ZPF) was prepared in this work, which had higher char yield than pure phenolic resin (PF). Then glass fiber reinforced zirconium acetate modified phenolic resin (GF/ZPF) composites were prepared. The effects of zirconium content on flexural strength and linear ablation rate of the composites were studied. And the changes of linear ablation rate and ablation morphologies of the composites with ablation time were observed and analyzed. The results showed that the char yield of ZPF was 68.7% at 1000℃, which increased by 21.7% than that of PF. The flexural strength of GF/ZPF composites reached up to 642MPa when the zirconium content of the resin was 14%. With the increase of the zirconium content from 10% to 15%, the linear ablation rate was reduced from 0.0305 mm/s to 0.0208mm/s. In addition, the linear ablation rate was rarely changed with increased ablation time, which indicated that the GF/ZPF composites had excellent ablation properties.

Key words: zirconium acetate modified phenolic resin, char yield, composites, bending strength, linear ablation rate

中图分类号:

TBB332
TQ323

李哲, 周权, 陈麒, 倪礼忠. 醋酸锆改性酚醛树脂复合材料的性能研究[J]. 复合材料科学与工程, 2014, 0(10): 66-69.

LI Zhe, ZHOU Quan, CHEN Qi, NI Li-zhong. STUDY ON PROPERTIES OF ZIRCONIUM ACETATE MODIFIED PHENOLIC RESIN COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(10): 66-69.

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