高卷曲聚醚酯/聚酯并列复合纤维的制备及其性能

doi:10.13475/j.fzxb.20210706806

纺织学报 ›› 2022, Vol. 43 ›› Issue (09): 70-75.doi: 10.13475/j.fzxb.20210706806

高卷曲聚醚酯/聚酯并列复合纤维的制备及其性能

何崎¹^,², 李军令¹^,², 靳高岭³, 刘津¹^,², 柯福佑¹^,², 陈烨¹^,²(), 王华平¹^,²

1.东华大学纤维材料改性国家重点实验室, 上海 201620
2.东华大学材料科学与工程学院,上海 201620
3.中国化学纤维工业协会, 北京 100020

收稿日期:2021-07-23 修回日期:2022-03-08 出版日期:2022-09-15 发布日期:2022-09-26
通讯作者: 陈烨
作者简介:何崎(1998—),女,硕士生。主要研究方向为并列复合聚酯纤维。
基金资助:
国家重点研发计划项目(2017YFB0309200);浙江省创新团队项目(2019R01011)

Preparation and properties of tetrahydrofuran homopolyether-polybutyleneterephthalate/polyethylene terephthalate parallel composite fiber

HE Qi¹^,², LI Junling¹^,², JIN Gaoling³, LIU Jin¹^,², KE Fuyou¹^,², CHEN Ye¹^,²(), WANG Huaping¹^,²

1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
2. College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
3. China Chemical Fibers Association, Beijing 100020, China

Received:2021-07-23 Revised:2022-03-08 Published:2022-09-15 Online:2022-09-26
Contact: CHEN Ye

摘要/Abstract

摘要：

针对聚对苯二甲酸丁二醇酯/聚对苯二甲酸乙二醇酯(PBT/PET)并列复合纤维存在的卷曲弹性不足、服用舒适性差等问题,选用四氢呋喃均聚醚(PTMG)改性的PBT和常规PET作为原料,通过复合纺丝制备了PTMG-PBT/PET并列复合纤维,研究了PTMG质量分数对聚醚酯和复合纤维性能的影响,以及热处理工艺对复合纤维卷曲性能的影响。结果表明:随着PTMG质量分数的增加,聚醚酯的吸水率和吸湿率可达到4.10%和1.62%,接触角可达63.81°,复合纤维的卷曲性能也明显提高,卷曲率可达到48%;热处理可进一步提升复合纤维的卷曲性能,其中湿热处理效果比干热处理效果好,湿热处理后复合纤维的卷曲率和卷曲回复率可分别达到70%和55%;PTMG也可以提高复合纤维的常压上染率,最高可达到93.25%,比PBT/PET并列复合纤维高12%。

关键词: 四氢呋喃均聚醚, 并列复合纤维, 吸湿性, 热处理, 卷曲性能, 上染率

Abstract:

In view of insufficient crimp elasticity and poor wearing comfort of polybutylene terephthalate/polyethylene terephthalate (PBT/PET) parallel composite fibers, tetrahydrofuran homopolyether (PTMG) was selected to modify PBT and conventional PET were used as raw materials to prepare PTMG-PBT/PET parallel composite fibers by composite spinning. The effect of PTMG mass fraction on the properties of polyether ester and composite fibers, and the crimp properties of composite fibers by heat treatment process were studied. The results show that with the increase of the mass fraction of PTMG, the water absorption and moisture absorption rate of polyether ester can reach 4.10% and 1.62% respectively, the contact angle can reach 63.81°, and the crimping performance of the composite fiber is also significantly improved, reaching a crimp ratio of 48%. Heat treatment can further improve the crimp properties of composite fibers and the effect of wet heat treatment is shown to be better than that of dry heat treatment. After wet heat treatment, the crimp ratio and crimp recovery of the composite fibers reach 70% and 55%, respectively. PTMG can also improve the normal pressure dye uptake rate of composite fibers, which reaches as high as 93.25%, and is 12% higher than that of PBT/PET parallel composite fibers.

Key words: tetrahydrofuran homopolyether, parallel composite fiber, moisture absorption property, heat treatment, crimp property, dye uptake rate

中图分类号:

TQ342.22

何崎, 李军令, 靳高岭, 刘津, 柯福佑, 陈烨, 王华平. 高卷曲聚醚酯/聚酯并列复合纤维的制备及其性能[J]. 纺织学报, 2022, 43(09): 70-75.

HE Qi, LI Junling, JIN Gaoling, LIU Jin, KE Fuyou, CHEN Ye, WANG Huaping. Preparation and properties of tetrahydrofuran homopolyether-polybutyleneterephthalate/polyethylene terephthalate parallel composite fiber[J]. Journal of Textile Research, 2022, 43(09): 70-75.

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样品名称	PBT质量分数/%	PTMG质量分数/%	特性黏度/ (dL·g^-1)	结晶温度/℃	熔点/ ℃
PET	—	—	0.68	127	258
PBT	—	—	1.10	148	230
PTMG-PBT90	90	10	1.22	129	210
PTMG-PBT80	80	20	1.34	125	203
PTMG-PBT65	65	35	1.45	122	197
PTMG-PBT45	45	55	1.57	120	193

原料名称	纺丝温度/℃				喷丝板温度/℃	环吹风温度/℃	纺丝速度/ (m·min^-1)
原料名称	一区	二区	三区	四区	喷丝板温度/℃	环吹风温度/℃	纺丝速度/ (m·min^-1)
PET	295	300	300	295	290	30	600
PTMG-PBT	270	275	275	270	290	30	600

纤维名称	线密度/dtex
PBT/PET	255
PTMG-PBT90/PET	232
PTMG-PBT80/PET	219
PTMG-PBT65/PET	189
PTMG-PBT45/PET	144

试样名称	吸水率/%	吸湿率/%	体积比电阻/(Ω·cm)
PBT	1.22	0.61	5.82×10¹²
PTMG-PBT90	1.44	0.67	1.25×10¹²
PTMG-PBT80	1.96	1.17	6.34×10¹¹
PTMG-PBT65	2.47	1.32	2.45×10¹¹
PTMG-PBT45	4.10	1.62	1.25×10¹⁰

纤维名称	断裂强度/(cN·dtex^-1)	断裂伸长率%
PBT/PET	2.93	17.4
PTMG-PBT90/PET	2.68	51.8
PTMG-PBT80/PET	2.54	70.2
PTMG-PBT65/PET	2.19	80.7
PTMG-PBT45/PET	1.97	90.1

高卷曲聚醚酯/聚酯并列复合纤维的制备及其性能

Preparation and properties of tetrahydrofuran homopolyether-polybutyleneterephthalate/polyethylene terephthalate parallel composite fiber

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