CN107653517A - 一种超细多孔亲水聚酯纤维的制备方法 - Google Patents
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Abstract
本发明公开了一种超细多孔亲水聚酯纤维的制备方法,涉及聚酯纤维技术领域。本发明的制备方法包括亲水共聚酯切片的制备、结晶干燥、POY纺丝、拉伸定型、溶解成孔剂。本发明工艺简单合理,改善了聚酯纤维的亲水性能、抗静电性能、力学性能,制成的织物柔软舒适;添加的成孔剂在碱洗后可以溶去,形成与纤维空腔连通的微孔,水分容易吸收,排出进入大气,增强了舒适感。
Description
技术领域:
本发明涉及聚酯纤维技术领域,具体涉及一种超细多孔亲水聚酯纤维的制备方法。
背景技术:
聚酯纤维是目前合成纤维中应用最为广泛的品种,但是由于聚酯本身的分子结构排列规整,结晶度高、模量大,作为服用领域纤维存在手感发硬的问题,影响了其舒适性;同时聚酯分子缺乏极性官能团,吸湿性很差,在标准环境下纤维的回潮率仅为0.4%,而天然纤维棉回潮率达到了7.5%。聚酯纤维的吸湿性差、染色性能差及手感发硬在很多场合制约了聚酯纤维的应用。因此,研发出一种兼具吸湿性能、抗静电性能、柔软性能于一体,同时保有聚酯纤维本身优异的力学性能的方法尤为重要。
发明内容:
本发明所要解决的技术问题在于提供一种超细多孔亲水聚酯纤维的制备方法,改善了聚酯纤维的亲水性能、抗静电性能、力学性能,柔软舒适。
本发明所要解决的技术问题采用以下的技术方案来实现:
一种超细多孔亲水聚酯纤维的制备方法,包括以下步骤:
(1)亲水共聚酯切片的制备:将对苯二甲酸、乙二醇、乙二醇锑按照摩尔比0.95:1.6:0.012混合搅拌,230℃反应2h后,加入聚乙二醇与山梨醇的混合物、成孔剂,升温至245℃反应2h,再升温至270℃反应3h;反应物挤出、切料烘干得到亲水共聚酯切片;
(2)结晶干燥:将亲水共聚酯切片送入150~160℃的预结晶床结晶5~10min,再送入切片干燥塔,于155~165℃干燥3~4h;
(3)POY纺丝:将干燥后的共聚酯切片喂入纺丝机,在螺杆中经过进料段、压缩段、计量段后形成均匀的熔体,经计量泵计量后熔体被输送到纺丝组件,经喷丝板喷出形成丝条,在侧吹风装置的作用下冷却固化,经集束上油,卷绕得到POY纤维;
(4)拉伸定型:将POY纤维加热拉伸,紧张定型后再进行松弛定型;
(5)溶解成孔剂:将定型后的纤维浸渍于碱液中20~30min,得到该超细多孔亲水聚酯纤维。
优选地,所述成孔剂为聚氨酯、聚乙烯吡咯烷酮、木粉或滑石粉。
优选地,所述POY纺丝工艺参数包括:纺丝温度280℃,纺丝速度1800m/min,组件压力20MPa,螺杆各区温度240℃/250℃/265℃/275℃/280℃;吹风温度速度25℃×1.1m/min;卷曲速度300m/min。
优选地,所述加热拉伸温度为80~125℃,拉伸倍数为2.22×1.01。
优选地,所述紧张定型温度为180℃,松弛定型温度为140~150℃。
本发明的有益效果是:1、本发明的超细多孔亲水聚酯纤维的制备方法,主要包括亲水共聚酯切片的制备、结晶干燥、POY纺丝、拉伸定型、溶解成孔剂,工艺简单合理,改善了聚酯纤维的亲水性能、抗静电性能、力学性能,制成的织物柔软舒适。
2、本发明亲水共聚酯切片,分阶段酯化保证了多元醇的充分反应,有利于形成序列结构均匀分布的共聚酯,通过补加大分子量的山梨醇可以改进亲水性能,添加的成孔剂在碱洗后可以溶去,形成与纤维空腔连通的微孔,水分容易吸收,排出进入大气,增强了舒适感。
3、本发明的POY纺丝工艺,工艺参数可控,对设备的改造投入小,节约了成本,增加了产率。
具体实施方式:
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施例,进一步阐述本发明。
实施例1
一种超细多孔亲水聚酯纤维的制备方法,包括以下步骤:
(1)亲水共聚酯切片的制备:取对苯二甲酸157.7g、乙二醇99.2g、乙二醇锑5.1g,混合搅拌,230℃反应2h后,加入聚乙二醇与山梨醇的混合物、成孔剂聚氨酯,升温至245℃反应2h,再升温至270℃反应3h;反应物挤出、切料烘干得到亲水共聚酯切片。
(2)结晶干燥:将亲水共聚酯切片送入150℃的预结晶床结晶6min,再送入切片干燥塔,于160℃干燥3.5h。
(3)POY纺丝:将干燥后的共聚酯切片喂入纺丝机,在螺杆中经过进料段、压缩段、计量段后形成均匀的熔体,经计量泵计量后熔体被输送到纺丝组件,经喷丝板喷出形成丝条,在侧吹风装置的作用下冷却固化,经集束上油,卷绕得到POY纤维。其中,POY纺丝工艺参数包括:纺丝温度280℃,纺丝速度1800m/min,组件压力20MPa,螺杆各区温度240℃/250℃/265℃/275℃/280℃;吹风温度速度25℃×1.1m/min;卷曲速度300m/min。
(4)拉伸定型:将POY纤维加热拉伸,紧张定型后再进行松弛定型。其中,加热拉伸温度为100℃,拉伸倍数为2.22×1.01。紧张定型温度为180℃,松弛定型温度为140℃。
(5)溶解成孔剂:将定型后的纤维浸渍于碱液中30min,得到该超细多孔亲水聚酯纤维。
实施例2
一种超细多孔亲水聚酯纤维的制备方法,包括以下步骤:
(1)亲水共聚酯切片的制备:取对苯二甲酸157.7g、乙二醇99.2g、乙二醇锑5.1g,混合搅拌,230℃反应2h后,加入聚乙二醇与山梨醇的混合物、成孔剂聚乙烯吡咯烷酮,升温至245℃反应2h,再升温至270℃反应3h;反应物挤出、切料烘干得到亲水共聚酯切片。
(2)结晶干燥:将亲水共聚酯切片送入155℃的预结晶床结晶8min,再送入切片干燥塔,于162℃干燥3.5h。
(3)POY纺丝:将干燥后的共聚酯切片喂入纺丝机,在螺杆中经过进料段、压缩段、计量段后形成均匀的熔体,经计量泵计量后熔体被输送到纺丝组件,经喷丝板喷出形成丝条,在侧吹风装置的作用下冷却固化,经集束上油,卷绕得到POY纤维。其中,POY纺丝工艺参数包括:纺丝温度280℃,纺丝速度1800m/min,组件压力20MPa,螺杆各区温度240℃/250℃/265℃/275℃/280℃;吹风温度速度25℃×1.1m/min;卷曲速度300m/min。
(4)拉伸定型:将POY纤维加热拉伸,紧张定型后再进行松弛定型。其中,加热拉伸温度为90℃,拉伸倍数为2.22×1.01。紧张定型温度为180℃,松弛定型温度为142℃。
(5)溶解成孔剂:将定型后的纤维浸渍于碱液中26min,得到该超细多孔亲水聚酯纤维。
实施例3
一种超细多孔亲水聚酯纤维的制备方法,包括以下步骤:
(1)亲水共聚酯切片的制备:取对苯二甲酸157.7g、乙二醇99.2g、乙二醇锑5.1g,混合搅拌,230℃反应2h后,加入聚乙二醇与山梨醇的混合物、成孔剂木粉,升温至245℃反应2h,再升温至270℃反应3h;反应物挤出、切料烘干得到亲水共聚酯切片。
(2)结晶干燥:将亲水共聚酯切片送入160℃的预结晶床结晶10min,再送入切片干燥塔,于165℃干燥3h。
(3)POY纺丝:将干燥后的共聚酯切片喂入纺丝机,在螺杆中经过进料段、压缩段、计量段后形成均匀的熔体,经计量泵计量后熔体被输送到纺丝组件,经喷丝板喷出形成丝条,在侧吹风装置的作用下冷却固化,经集束上油,卷绕得到POY纤维。其中,POY纺丝工艺参数包括:纺丝温度280℃,纺丝速度1800m/min,组件压力20MPa,螺杆各区温度240℃/250℃/265℃/275℃/280℃;吹风温度速度25℃×1.1m/min;卷曲速度300m/min。
(4)拉伸定型:将POY纤维加热拉伸,紧张定型后再进行松弛定型。其中,加热拉伸温度为115℃,拉伸倍数为2.22×1.01。紧张定型温度为180℃,松弛定型温度为150℃。
(5)溶解成孔剂:将定型后的纤维浸渍于碱液中30min,得到该超细多孔亲水聚酯纤维。
实施例4
一种超细多孔亲水聚酯纤维的制备方法,包括以下步骤:
(1)亲水共聚酯切片的制备:取对苯二甲酸157.7g、乙二醇99.2g、乙二醇锑5.1g,混合搅拌,230℃反应2h后,加入聚乙二醇与山梨醇的混合物、成孔剂滑石粉,升温至245℃反应2h,再升温至270℃反应3h;反应物挤出、切料烘干得到亲水共聚酯切片。
(2)结晶干燥:将亲水共聚酯切片送入160℃的预结晶床结晶10min,再送入切片干燥塔,于165℃干燥4h。
(3)POY纺丝:将干燥后的共聚酯切片喂入纺丝机,在螺杆中经过进料段、压缩段、计量段后形成均匀的熔体,经计量泵计量后熔体被输送到纺丝组件,经喷丝板喷出形成丝条,在侧吹风装置的作用下冷却固化,经集束上油,卷绕得到POY纤维。其中,POY纺丝工艺参数包括:纺丝温度280℃,纺丝速度1800m/min,组件压力20MPa,螺杆各区温度240℃/250℃/265℃/275℃/280℃;吹风温度速度25℃×1.1m/min;卷曲速度300m/min。
(4)拉伸定型:将POY纤维加热拉伸,紧张定型后再进行松弛定型。其中,加热拉伸温度为125℃,拉伸倍数为2.22×1.01。紧张定型温度为180℃,松弛定型温度为150℃。
(5)溶解成孔剂:将定型后的纤维浸渍于碱液中30min,得到该超细多孔亲水聚酯纤维。
相关指标检测:对上述实施例制备的聚酯纤维进行了相关指标检测,其中对比例选择常用的聚酯纤维,具体结果见表1。
表1实施例、对比例指标检测结果
由上表可以看出,本发明实施例的聚酯纤维与常用的聚酯纤维相比,强度高、伸长率好,体积比电阻小,导电抗静电性能优良,干热收缩率小,疵点小,质量稳定均匀,回潮率和孔隙率高,说明其纤维亲水多孔,吸湿排汗,做成织物后舒适保暖。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (5)
1.一种超细多孔亲水聚酯纤维的制备方法,其特征在于:包括以下步骤:
(1)亲水共聚酯切片的制备:将对苯二甲酸、乙二醇、乙二醇锑按照摩尔比0.95:1.6:0.012混合搅拌,230℃反应2h后,加入聚乙二醇与山梨醇的混合物、成孔剂,升温至245℃反应2h,再升温至270℃反应3h;反应物挤出、切料烘干得到亲水共聚酯切片;
(2)结晶干燥:将亲水共聚酯切片送入150~160℃的预结晶床结晶5~10min,再送入切片干燥塔,于155~165℃干燥3~4h;
(3)POY纺丝:将干燥后的共聚酯切片喂入纺丝机,在螺杆中经过进料段、压缩段、计量段后形成均匀的熔体,经计量泵计量后熔体被输送到纺丝组件,经喷丝板喷出形成丝条,在侧吹风装置的作用下冷却固化,经集束上油,卷绕得到POY纤维;
(4)拉伸定型:将POY纤维加热拉伸,紧张定型后再进行松弛定型;
(5)溶解成孔剂:将定型后的纤维浸渍于碱液中20~30min,得到该超细多孔亲水聚酯纤维。
2.根据权利要求1所述的超细多孔亲水聚酯纤维的制备方法,其特征在于:所述成孔剂为聚氨酯、聚乙烯吡咯烷酮、木粉或滑石粉。
3.根据权利要求1所述的超细多孔亲水聚酯纤维的制备方法,其特征在于:所述POY纺丝工艺参数包括:纺丝温度280℃,纺丝速度1800m/min,组件压力20MPa,螺杆各区温度240℃/250℃/265℃/275℃/280℃;吹风温度速度25℃×1.1m/min;卷曲速度300m/min。
4.根据权利要求1所述的超细多孔亲水聚酯纤维的制备方法,其特征在于:所述加热拉伸温度为80~125℃,拉伸倍数为2.22×1.01。
5.根据权利要求1所述的超细多孔亲水聚酯纤维的制备方法,其特征在于:所述紧张定型温度为180℃,松弛定型温度为140~150℃。
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