CN106757486A - 耐高温氨纶的制备方法 - Google Patents
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Abstract
本发明涉及合成树脂及塑料技术领域,具体涉及一种耐高温氨纶的制备方法。耐高温氨纶的制备方法,其特征在于:包括如下步骤:第一步,将5000g PTMG,1244~1521g MDI在8077~9489g的DMAC中反应,得到异氰酸根封端的预聚物;第二步,冷却至10~12℃时,在搅拌条件下逐渐加入2778~5073g含有104.4g EDA,22.7~46.9g PDA,24.3g DEA的DMAC溶液进行扩链反应;第三步,然后加入32.0~34.0g HN‑150,64.0~68.0g HW‑245,91.4~97.1g TSA‑011,32.0~34.0g Tinuvin622,搅拌混合均匀,并经熟化后即得的纺丝原液;第四步,将上述纺丝原液通过喷丝板干法纺丝制备成耐高温氨纶。本发明制成的耐高温氨纶,其硬段结构对耐高温性能的影响较为显著,氨纶的硬段结构更加规整,微相分离程度更大。在进行高温染色定型时,耐高温性能更好。
Description
技术领域
本发明涉及合纤维工业技术领域,具体涉及一种耐高温氨纶的制备方法。
背景技术
氨纶是一种以聚氨基甲酸酯为主要成分的具有线性嵌段结构的合成纤维,具有优异的弹性功能和承受应力,可以添加到其他纤维中以提高纺织品的弹性和柔软度,使织物的服用效果更加舒适,提升纺织品的档次。随着氨纶应用领域的不断扩大,人们对氨纶的性能提出了更高的要求,其中氨纶的耐高温性能显得尤为重要,而且对未来面料轻薄化的发展具有重要的影响。
氨纶与涤纶交织的织物在130℃高温下染色才有较好的上染率,通常为了使其颜色保持鲜艳不褪色,对面料进行2次甚至3次染色,但高温条件下会影响氨纶的性能,使其加工织造和面料效果不够理想,限制了其广泛应用。目前,耐高温氨纶的开发已成为行业热点。泰光产业在制备耐高温氨纶时,单独使用乙二胺作为扩链剂;中化国际将季铵盐蒙脱土添加到氨纶纺丝原液中,制备耐高温氨纶;东华大学在氨纶纺丝原液中加入催化剂、交联剂、聚烯烃、光敏剂后,采用辐照交联或紫外交联技术制备耐高温氨纶。
发明内容
本发明旨在提出一种耐高温氨纶的制备方法。
本发明的技术方案在于:
耐高温氨纶的制备方法,包括如下步骤:
第一步,将5000g PTMG,1244~1521g MDI在8077~9489g的DMAC中反应,得到异氰酸根封端的预聚物;
第二步,冷却至10~12℃时,在搅拌条件下逐渐加入2778~5073g含有104.4g EDA,22.7~46.9g PDA,24.3g DEA的DMAC溶液进行扩链反应;
第三步,然后加入32.0~34.0g HN-150,64.0~68.0g HW-245,91.4~97.1g TSA-011,32.0~34.0g Tinuvin622,搅拌混合均匀,并经熟化后即得的纺丝原液;
第四步,将上述纺丝原液通过喷丝板干法纺丝制备成耐高温氨纶。
所述的纺丝原液的固含量为35%。
所述的制成的耐高温氨纶线密度为33dtex。
所述的制备异氰酸根封端的预聚物的过程中,反应温度为45~50℃,反应时间为110~120min 。
所述的内干法纺丝在高温甬道内进行。
本发明的技术效果在于:
本发明制成的耐高温氨纶,其硬段结构对耐高温性能的影响较为显著,氨纶的硬段结构更加规整,微相分离程度更大。在进行高温染色定型时,耐高温性能更好。
具体实施方式
耐高温氨纶的制备方法,包括如下步骤:
实施例1
第一步,将5000g PTMG,1244g MDI在8077g的DMAC中反应,得到异氰酸根封端的预聚物;
第二步,冷却至10℃时,在搅拌条件下逐渐加入2778g含有104.4g EDA,22.7g PDA,24.3g DEA的DMAC溶液进行扩链反应;
第三步,然后加入32.0g HN-150,64.0g HW-245,91.4g TSA-011,32.0g Tinuvin622,搅拌混合均匀,并经熟化后即得的纺丝原液;
第四步,将上述纺丝原液通过喷丝板干法纺丝制备成耐高温氨纶。
其中,所述的纺丝原液的固含量为35%。所述的制成的耐高温氨纶线密度为33dtex。所述的制备异氰酸根封端的预聚物的过程中,反应温度为50℃,反应时间为110min。所述的内干法纺丝在高温甬道内进行。
实施例2
第一步,将5000g PTMG, 1521g MDI在9489g的DMAC中反应,得到异氰酸根封端的预聚物;
第二步,冷却至12℃时,在搅拌条件下逐渐加入5073g含有104.4g EDA, 46.9g PDA,24.3g DEA的DMAC溶液进行扩链反应;
第三步,然后加入34.0g HN-150, 68.0g HW-245, 97.1g TSA-011, 34.0gTinuvin622,搅拌混合均匀,并经熟化后即得的纺丝原液;
第四步,将上述纺丝原液通过喷丝板干法纺丝制备成耐高温氨纶。
其中,所述的纺丝原液的固含量为35%。所述的制成的耐高温氨纶线密度为33dtex。所述的制备异氰酸根封端的预聚物的过程中,反应温度为50℃,反应时间为120min。所述的内干法纺丝在高温甬道内进行。
其中,PTMG为聚四亚甲基醚二醇,MDI为4,4’-二苯基甲烷二异氰酸酯,DMAC为N,N’-二甲基乙酰胺,EDA为乙二胺,PDA为1,2-丙二丙二胺,DEA为二乙胺。
实施例3
第一步,将5000g PTMG, 1521g MDI在9489g的DMAC中反应,得到异氰酸根封端的预聚物;
第二步,冷却至12℃时,在搅拌条件下逐渐加入5073g含有104.4g EDA, 46.9g PDA,24.3g DEA的DMAC溶液进行扩链反应;
第三步,然后加入34.0g HN-150, 68.0g HW-245, 97.1g TSA-011, 34.0gTinuvin622,搅拌混合均匀,并经熟化后即得的纺丝原液;
第四步,将上述纺丝原液通过喷丝板干法纺丝制备成耐高温氨纶。
其中,所述的纺丝原液的固含量为35%。所述的制成的耐高温氨纶线密度为33dtex。所述的制备异氰酸根封端的预聚物的过程中,反应温度为50℃,反应时间为120min。所述的内干法纺丝在高温甬道内进行。
其中,PTMG为聚四亚甲基醚二醇,MDI为4,4’-二苯基甲烷二异氰酸酯,DMAC为N,N’-二甲基乙酰胺,EDA为乙二胺,PDA为1,2-丙二丙二胺,DEA为二乙胺。
Claims (5)
1.耐高温氨纶的制备方法,其特征在于:包括如下步骤:
第一步,将5000g PTMG,1244~1521g MDI在8077~9489g的DMAC中反应,得到异氰酸根封端的预聚物;
第二步,冷却至10~12℃时,在搅拌条件下逐渐加入2778~5073g含有104.4g EDA,22.7~46.9g PDA,24.3g DEA的DMAC溶液进行扩链反应;
第三步,然后加入32.0~34.0g HN-150,64.0~68.0g HW-245,91.4~97.1g TSA-011,32.0~34.0g Tinuvin622,搅拌混合均匀,并经熟化后即得的纺丝原液;
第四步,将上述纺丝原液通过喷丝板干法纺丝制备成耐高温氨纶。
2.根据权利要求1所述的耐高温氨纶的制备方法,其特征在于:所述的纺丝原液的固含量为35%。
3.根据权利要求1所述的耐高温氨纶的制备方法,其特征在于:所述的制成的耐高温氨纶线密度为33dtex。
4.根据权利要求1所述的耐高温氨纶的制备方法,其特征在于:所述的制备异氰酸根封端的预聚物的过程中,反应温度为45~50℃,反应时间为110~120min 。
5.根据权利要求1所述的耐高温氨纶的制备方法,其特征在于:所述的内干法纺丝在高温甬道内进行。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107857706A (zh) * | 2017-11-30 | 2018-03-30 | 华南理工大学 | 一种增加氨纶酸性染料上染率和色牢度的添加剂及其应用 |
CN109322008A (zh) * | 2018-10-09 | 2019-02-12 | 浙江华峰氨纶股份有限公司 | 一种提高氨纶产品性能稳定性的方法 |
CN111235907A (zh) * | 2020-01-22 | 2020-06-05 | 鲁泰纺织股份有限公司 | 一种涤纶包氨纶高弹纱的染色方法 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107857706A (zh) * | 2017-11-30 | 2018-03-30 | 华南理工大学 | 一种增加氨纶酸性染料上染率和色牢度的添加剂及其应用 |
CN107857706B (zh) * | 2017-11-30 | 2020-11-24 | 华南理工大学 | 一种增加氨纶酸性染料上染率和色牢度的添加剂及其应用 |
CN109322008A (zh) * | 2018-10-09 | 2019-02-12 | 浙江华峰氨纶股份有限公司 | 一种提高氨纶产品性能稳定性的方法 |
CN109322008B (zh) * | 2018-10-09 | 2020-12-25 | 浙江华峰氨纶股份有限公司 | 一种提高氨纶产品性能稳定性的方法 |
CN111235907A (zh) * | 2020-01-22 | 2020-06-05 | 鲁泰纺织股份有限公司 | 一种涤纶包氨纶高弹纱的染色方法 |
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