摘要
通过干法纺丝制备了聚乙烯醇缩丁醛/酚醛树脂(PVB/PF)复合纤维,研究了不同组分比例对该纤维的结构和性能的影响。结果表明,当PVB与PF质量比为5∶5时,PF在PVB中以尺寸为2~3μm的分散相存在。随着PF含量的增加,PVB/PF复合纤维的玻璃化转变温度(Tg)往高温方向偏移,且无论何种比例都表现为一个单一的Tg,这说明两者具有较好的相容性。红外光谱显示PVB与PF之间没有发生化学反应,但形成了氢键相互作用。热重分析发现PVB/PF复合纤维的热分解曲线综合了纯PVB和纯PF的特征。随着PF含量的增加,纤维的拉伸强度呈现出先上升后下降的趋势,当PVB与PF质量比为8∶2时,纤维的拉伸强度最高。
The poly(vinyl butyral)/phenolic resin(PVB/PF)composite fibers were prepared by dry spinning method,and the influence of different component ratios on the structure and properties of the fibers were studied.The results show that when the mass ratio of PVB to PF is 5:5,PF exists as a dispersed phase with a size of 2~3μm in PVB.With the increase of PF content,the T_(g) of PVB/PF composite fibers shift to the high temperature direction.All of the ratios are expressed as a single T_(g),it shows that the two composite have good miscibility.FTIR spectroscopy shows that there is no chemical reaction between PVB and PF,but a hydrogen bonding interaction is formed.TGA result finds that the TGA curve of PVB/PF composite fi⁃bers combine the characteristics of pure PVB and pure PF.With the increase of PF content,the tensile strength of the fibers shows a trend of first rising and then decreasing.When the mass ratio of PVB to PF is 8:2,the tensile strength of the fibers is the highest.
作者
黄熙怡
王彪
HUANG Xi-yi;WANG Biao(College of Material Science and Engineering,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 201620,China)
出处
《合成纤维》
CAS
2022年第5期15-19,共5页
Synthetic Fiber in China
基金
国家重点研发计划资助(2020YFB1505700)。
关键词
聚乙烯醇缩丁醛
酚醛树脂
复合纤维
结构
性能
poly(vinyl butyral)
phenolic resin
composite fiber
structure
property
