CN112175165A - 一种新型湿摩擦牢度提升剂的制备方法 - Google Patents

一种新型湿摩擦牢度提升剂的制备方法 Download PDF

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CN112175165A
CN112175165A CN202011033688.5A CN202011033688A CN112175165A CN 112175165 A CN112175165 A CN 112175165A CN 202011033688 A CN202011033688 A CN 202011033688A CN 112175165 A CN112175165 A CN 112175165A
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wet rubbing
rubbing fastness
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diisocyanate
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陆少锋
师文钊
徐成书
谢艳
王海珠
李苏松
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Shaoxing Keqiao District West Textile Industry Innovation Research Institute
Xian Polytechnic University
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Xian Polytechnic University
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Abstract

本发明公开了一种新型湿摩擦牢度提升剂的制备方法,将适量聚乙二醇加入到反应器中进行脱水处理;降低反应器的温度,加入适量二异氰酸酯,并保温反应,而后升温,继续保温反应,得到聚氨酯预聚体;在反应器中加入适量小分子多元醇进行扩链,并保温反应;在反应器中加入适量芳香族二胺扩链剂进行扩链,并保温反应1~2h;在反应器中加水乳化,得到湿摩擦牢度提升剂。本发明一种新型湿摩擦牢度提升剂的制备方法,解决了现有技术中存在的活性染料的湿摩擦牢度差的问题。

Description

一种新型湿摩擦牢度提升剂的制备方法
技术领域
本发明涉及纺织印染助剂技术领域,具体涉及一种新型湿摩擦牢度提升剂的制备方法。
背景技术
随着纺织印染行业的发展,对于各类面料质量提出了更高要求,尤其是对湿摩擦牢度提出了更高的要求。但是,全棉织物(包括各类纤维素纤维)在用活性染料染深浓色(尤其大红、黑色、藏青等)时湿摩擦牢度都是比较差的。虽然采用无醛固色剂对皂洗牢度等有较大帮助,但对湿摩擦牢度的作用不大。目前,多采用湿摩擦牢度提升剂来提高活性染料染深浓色织物的湿摩擦牢度。即将湿摩擦牢度提升剂整理到织物上形成一层高分子保护膜,来防止染料在摩擦时掉落。
目前,市场上的湿摩擦牢度提升剂种类较多,结构上大多以水性聚氨酯类为主,但其湿摩擦牢度差。
发明内容
本发明的目的提供一种新型湿摩擦牢度提升剂的制备方法,解决了现有技术中存在的活性染料的湿摩擦牢度差的问题。
本发明所采用的技术方案是一种新型湿摩擦牢度提升剂的制备方法,具体按照以下步骤实施:
步骤1,将适量聚乙二醇加入到反应器中进行脱水处理;
步骤2,将反应器的温度降至55~65℃,加入适量二异氰酸酯,并保温反应1h,而后升温至70℃,保温反应2h,得到聚氨酯预聚体;
步骤3,在反应器中加入适量小分子多元醇进行扩链,并保温反应2h;
步骤4,在反应器中加入适量芳香族二胺扩链剂进行扩链,并保温反应1~2h;
步骤5,在反应器中加水乳化,得到湿摩擦牢度提升剂。
本发明的特点还在于:
聚乙二醇的分子量为1000~4000。
脱水处理的温度为110~120℃,抽真空2h。
二异氰酸酯是异佛尔酮二异氰酸酯或六亚甲基二异氰酸酯。
二异氰酸酯与聚乙二醇的摩尔比为1.2~2:1。
小分子醇是1,4丁二醇、乙二醇、丙二醇或一缩二乙二醇。
二异氰酸酯与小分子多元醇的摩尔比为5~8:1。
芳香族二胺扩链剂是邻苯二胺、间苯二胺或对苯二胺。
二异氰酸酯与芳香族二胺扩链剂的摩尔比为5~8:1。
本发明的有益效果是:
本发明一种新型湿摩擦牢度提升剂的制备方法,在分子结构中引入芳香族二胺进行扩链,大大提高了聚氨酯膜的耐磨性,从而将其应用到活性染料染色棉织物后的固色处理,可以在棉纤维表面形成一层耐磨性优良的高分子膜,从而将染料保护起来,有效提高了活性染料的耐摩擦牢度,特别是湿摩擦牢度;本发明一种新型湿摩擦牢度提升剂的制备方法,采用亲水性较好的聚乙二醇为单体制备聚氨酯预聚体,避免了亲水性扩链剂的加入,简化了制备工艺,产品性能更稳定。
具体实施方式
下面结合具体实施方式对本发明进行详细说明。
本发明提出了一种新型湿摩擦牢度提升剂的制备方法,具体按照以下步骤实施:
步骤1,将适量聚乙二醇加入到反应器中进行脱水处理;
步骤2,将反应器的温度降至55~65℃,加入适量二异氰酸酯,并保温反应1h,而后升温至70℃,保温反应2h,得到聚氨酯预聚体;
步骤3,在反应器中加入适量小分子多元醇进行扩链,并保温反应2h;
步骤4,在反应器中加入适量芳香族二胺扩链剂进行扩链,并保温反应1~2h;
步骤5,在反应器中加水乳化,得到湿摩擦牢度提升剂。
其中,聚乙二醇的分子量为1000~4000,优选地,聚乙二醇的分子量为1000~2000;
优选地,脱水处理的温度为110~120℃,抽真空2h。
优选地,二异氰酸酯是异佛尔酮二异氰酸酯或六亚甲基二异氰酸酯。
其中,二异氰酸酯与聚乙二醇的摩尔比为1.2~2:1;优选地,二异氰酸酯与聚乙二醇的摩尔比为1.2~1.5:1;
优选地,小分子醇是1,4丁二醇、乙二醇、丙二醇或一缩二乙二醇。
优选地,二异氰酸酯与小分子多元醇的摩尔比为5~8:1。
优选地,芳香族二胺扩链剂是邻苯二胺、间苯二胺或对苯二胺。
优选地,二异氰酸酯与芳香族二胺扩链剂的摩尔比为5~8:1。
实施例1
一种新型湿摩擦牢度提升剂的制备方法,具体按照以下步骤实施:
步骤1,将适量分子量为1000的聚乙二醇加入到反应器中,在110~120℃条件下抽真空2h,脱水;
步骤2,将反应器的温度降至55℃,加入适量二异氰酸酯,并保温反应1h,而后升温至70℃,保温反应2h,得到聚氨酯预聚体;其中,二异氰酸酯是异佛尔酮二异氰酸酯,二异氰酸酯与聚乙二醇的摩尔比为1.5:1。
步骤3,在反应器中加入适量小分子多元醇进行扩链,并于70℃保温反应2h;其中,小分子多元醇是1,4丁二醇,二异氰酸酯与小分子多元醇的摩尔比为6:1;
步骤4,在反应器中加入适量芳香族二胺扩链剂进行扩链,并于70℃保温反应1.6h;其中,芳香族二胺扩链剂是对苯二胺,二异氰酸酯与芳香族二胺扩链剂的摩尔比为6:1;
步骤5,在反应器中加水乳化,得到湿摩擦牢度提升剂,加水量以湿摩擦牢度提升剂含固量为30%为宜。
实施例2
一种新型湿摩擦牢度提升剂的制备方法,具体按照以下步骤实施:
步骤1,将适量分子量为2000的聚乙二醇加入到反应器中,在110~120℃条件下抽真空2h,脱水;
步骤2,将反应器的温度降至65℃,加入适量二异氰酸酯,并保温反应1h,而后升温至70℃,保温反应2h,得到聚氨酯预聚体;其中,二异氰酸酯是六亚甲基二异氰酸酯,二异氰酸酯与聚乙二醇的摩尔比为1.3:1。
步骤3,在反应器中加入适量小分子多元醇进行扩链,并于70℃保温反应2h;其中,小分子多元醇是乙二醇,二异氰酸酯与小分子多元醇的摩尔比为8:1;
步骤4,在反应器中加入适量芳香族二胺扩链剂进行扩链,并于70℃保温反应1.1h;其中,芳香族二胺扩链剂是对苯二胺,二异氰酸酯与芳香族二胺扩链剂的摩尔比为5:1;
步骤5,在反应器中加水乳化,得到湿摩擦牢度提升剂,加水量以湿摩擦牢度提升剂含固量为30%为宜。
实施例3
一种新型湿摩擦牢度提升剂的制备方法,具体按照以下步骤实施:
步骤1,将适量分子量为2000的聚乙二醇加入到反应器中,在110~120℃条件下抽真空2h,脱水;
步骤2,将反应器的温度降至65℃,加入适量二异氰酸酯,并保温反应1h,而后升温至70℃,保温反应2h,得到聚氨酯预聚体;其中,二异氰酸酯是异佛尔酮二异氰酸酯,二异氰酸酯与聚乙二醇的摩尔比为1.2:1。
步骤3,在反应器中加入适量小分子多元醇进行扩链,并于70℃保温反应2h;其中,小分子多元醇是丙二醇,二异氰酸酯与小分子多元醇的摩尔比为7:1;
步骤4,在反应器中加入适量芳香族二胺扩链剂进行扩链,并于70℃保温反应2h;其中,芳香族二胺扩链剂是邻苯二胺,二异氰酸酯与芳香族二胺扩链剂的摩尔比为8:1;
步骤5,在反应器中加水乳化,得到湿摩擦牢度提升剂,加水量以湿摩擦牢度提升剂含固量为30%为宜。
实施例4
一种新型湿摩擦牢度提升剂的制备方法,具体按照以下步骤实施:
步骤1,将适量分子量为1000的聚乙二醇加入到反应器中,在110~120℃条件下抽真空2h,脱水;
步骤2,将反应器的温度降至55℃,加入适量二异氰酸酯,并保温反应1h,而后升温至70℃,保温反应2h,得到聚氨酯预聚体;其中,二异氰酸酯是异佛尔酮二异氰酸酯,二异氰酸酯与聚乙二醇的摩尔比为1.5:1。
步骤3,在反应器中加入适量小分子多元醇进行扩链,并于70℃保温反应2h;其中,小分子多元醇是1,4丁二醇,二异氰酸酯与小分子多元醇的摩尔比为5:1;
步骤4,在反应器中加入适量芳香族二胺扩链剂进行扩链,并于70℃保温反应1.5h;其中,芳香族二胺扩链剂是间苯二胺,二异氰酸酯与芳香族二胺扩链剂的摩尔比为6:1;
步骤5,在反应器中加水乳化,得到湿摩擦牢度提升剂,加水量以湿摩擦牢度提升剂含固量为30%为宜。
实施例5
一种新型湿摩擦牢度提升剂的制备方法,具体按照以下步骤实施:
步骤1,将适量分子量为3000的聚乙二醇加入到反应器中,在110~120℃条件下抽真空2h,脱水;
步骤2,将反应器的温度降至65℃,加入适量二异氰酸酯,并保温反应1h,而后升温至70℃,保温反应2h,得到聚氨酯预聚体;其中,二异氰酸酯是六亚甲基二异氰酸酯,二异氰酸酯与聚乙二醇的摩尔比为2:1。
步骤3,在反应器中加入适量小分子多元醇进行扩链,并于70℃保温反应2h;其中,小分子多元醇是1,4丁二醇,二异氰酸酯与小分子多元醇的摩尔比为4:1;
步骤4,在反应器中加入适量芳香族二胺扩链剂进行扩链,并于70℃保温反应1.3h;其中,芳香族二胺扩链剂是对苯二胺,二异氰酸酯与芳香族二胺扩链剂的摩尔比为5:1;
步骤5,在反应器中加水乳化,得到湿摩擦牢度提升剂,加水量以湿摩擦牢度提升剂含固量为30%为宜。
实施例1是最佳实施例。本发明制得的湿摩擦牢度提升剂对于活性染料染色棉织物的湿摩擦牢度有明显的增进作用,在其用量达到40g/L时,可使活性染料染色纯棉织物(染料用量8%owf)的湿摩擦牢度由1-2级提高至2-3级,达到生态纺织品标准对于产品湿摩擦牢度的指标要求。
实验验证:
采用活性染料染色棉织物(染料用量8%owf),未加本发明实施例1的湿摩擦牢度提升剂时,织物的湿摩擦牢度很差,为1-2级,而加入本发明实施例1的湿摩擦牢度提升剂后,织物的湿摩擦牢度明显提升,而且随着湿摩擦牢度提升剂用量的增多,湿摩擦牢度等级不断提高;当湿摩擦牢度提升剂用量为30g/L时,湿摩擦牢度达到2-3级,可满足生态纺织品标准要求,当湿摩擦牢度提升剂用量达到50g/L时,湿摩擦牢度高达3-4级。因此,采用本发明的方法制备的湿摩擦牢度提升剂对活性染料深浓色染色织物的湿摩擦牢度具有明显的提升作用。

Claims (9)

1.一种新型湿摩擦牢度提升剂的制备方法,其特征在于,具体按照以下步骤实施:
步骤1,将适量聚乙二醇加入到反应器中进行脱水处理;
步骤2,将反应器的温度降至55~65℃,加入适量二异氰酸酯,并保温反应1h,而后升温至70℃,保温反应2h,得到聚氨酯预聚体;
步骤3,在反应器中加入适量小分子多元醇进行扩链,并保温反应2h;
步骤4,在反应器中加入适量芳香族二胺扩链剂进行扩链,并保温反应1~2h;
步骤5,在反应器中加水乳化,得到湿摩擦牢度提升剂。
2.根据权利要求1所述的一种新型湿摩擦牢度提升剂的制备方法,其特征在于,所述聚乙二醇的分子量为1000~4000。
3.根据权利要求1所述的一种新型湿摩擦牢度提升剂的制备方法,其特征在于,所述脱水处理的温度为110~120℃,抽真空2h。
4.根据权利要求1所述的一种新型湿摩擦牢度提升剂的制备方法,其特征在于,所述二异氰酸酯是异佛尔酮二异氰酸酯或六亚甲基二异氰酸酯。
5.根据权利要求1所述的一种新型湿摩擦牢度提升剂的制备方法,其特征在于,所述二异氰酸酯与聚乙二醇的摩尔比为1.2~2:1。
6.根据权利要求1所述的一种新型湿摩擦牢度提升剂的制备方法,其特征在于,所述小分子醇是1,4丁二醇、乙二醇、丙二醇或一缩二乙二醇。
7.根据权利要求1所述的一种新型湿摩擦牢度提升剂的制备方法,其特征在于,所述二异氰酸酯与小分子多元醇的摩尔比为5~8:1。
8.根据权利要求1所述的一种新型湿摩擦牢度提升剂的制备方法,其特征在于,所述芳香族二胺扩链剂是邻苯二胺、间苯二胺或对苯二胺。
9.根据权利要求1所述的一种新型湿摩擦牢度提升剂的制备方法,其特征在于,所述二异氰酸酯与芳香族二胺扩链剂的摩尔比为5~8:1。
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