CN106049069B - 一种具有支化结构无氟织物拒水剂及其制备方法 - Google Patents
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Abstract
本发明涉及一种具有支化结构无氟织物拒水剂及其制备方法,属于纺织印染化工技术领域。该拒水剂具有良好的耐久性以及拒水效果,其制备步骤如下:先将有机硅氧烷和小分子多元醇的混合溶液在真空下干燥脱水,待混合溶液降温后再加入二异氰酸酯和催化剂,然后升温反应,得到反应体系A;待反应体系A降温后,加入长链烷烃类扩链剂,然后升温反应,得到反应体系B;待反应体系B降温后,先加入亲水扩链剂和丙酮进行反应,然后再加入封端剂,继续反应,得到反应体系C;待反应体系C降温后,先加中和剂中和,然后加水乳化,再除去丙酮,得到本发明所述具有支化结构无氟织物拒水剂。
Description
技术领域
本发明涉及一种具有支化结构无氟织物拒水剂及其制备方法,具体涉及一种具有支化结构的有机硅改性水性聚氨酯乳液及其制备方法,属于纺织印染化工技术领域。
背景技术
织物的拒水整理能够赋予织物防水透气的优异性能,因而受到市场青睐。含氟类拒水剂的拒水性能较佳,但是在加工和使用过程中会产生具有一定致癌性和生物积累性的氟碳化合物,尤其是产生的全氟辛酸和全氟辛烷磺酸盐是潜在的致癌物质。因此,无氟拒水剂成为当前研究热点。
但是目前主要使用的长链烷烃类无氟拒水剂和有机硅类无氟拒水剂的耐久性差,拒水性能有待提升,而且影响织物风格。中国专利CN 102978905A中公布了一种织物拒水剂,该拒水剂适用于篷盖布及器械装护具、罩衣这类织物,对贴身衣物这类品质要求较高的织物并不适用。中国专利CN 104233818 A中公开了一种有机硅拒水剂制备方法,该拒水剂将甲基含氢硅油和聚二甲基硅氧烷混合使用,一定程度上提升了有机硅类拒水剂的耐久性,但是拒水能力有待提升。
发明内容
针对现有技术中无氟拒水剂耐久性差的问题,本发明的目的在于提供一种具有支化结构无氟织物拒水剂及其制备方法,本发明所述的拒水剂耐久性好,显著提升了拒水效果,且制备方法简单。
本发明的目的是通过以下技术方案实现的。
一种具有支化结构无氟织物拒水剂,所述拒水剂中的组分及其质量份数如下:二异氰酸酯15.5~36.8份,长链烷烃类扩链剂10.3~26.5份,有机硅氧烷17.2~48.6份,亲水扩链剂3.2~8.6份,催化剂0.08~0.13份,中和剂1.8~9.5份,封端剂3.4~12份,小分子多元醇0.5~5.5份以及水52~700份;
所述长链烷烃类扩链剂为单硬脂酸甘油酯、双硬脂酸甘油酯、十六烷酸甘油酯或辛酸甘油酯;
所述亲水扩链剂为N-甲基二乙醇胺(N-MDEA)、二乙醇胺或三乙醇胺;
所述中和剂为盐酸或冰醋酸;
所述催化剂为二月桂酸二丁基锡(T12)或辛酸亚锡(T9);
所述封端剂为丁酮肟、硫醇或苯酚;
所述小分子多元醇为三羟甲基丙烷、季戊四醇或丙三醇。
所述二异氰酸酯优选甲苯二异氰酸酯(TDI)、异氟尔酮二异氰酸酯(IPDI)、二苯基甲烷二异氰酸酯(MDI)、氢化苯基甲烷二异氰酸酯(H-MDI)或六亚甲基二异氰酸酯(HDI)。
所述有机硅氧烷优选端羟丙基聚二甲基硅氧烷、端氨丙基聚二甲基硅氧烷或硅醇基聚二甲基硅氧烷。
一种本发明所述的具有支化结构无氟织物拒水剂的制备方法,所述制备方法的具体步骤如下:
步骤1.将有机硅氧烷和小分子多元醇的混合溶液在90~110℃的真空条件下搅拌脱水0.5~2h;
步骤2.步骤1中混合溶液的温度降至40~65℃时,加入二异氰酸酯和催化剂,然后升温至70~100℃,反应2~6h,得到反应体系A;
步骤3.反应体系A的温度降至40~55℃时,加入长链烷烃类扩链剂,然后升温至70~90℃,反应2~6h,得到反应体系B;
步骤4.反应体系B的温度降至30~55℃时,加入亲水扩链剂和丙酮,然后在40~65℃下反应0.5~2h,再加入封端剂,继续反应0.5~1h,得到反应体系C;
步骤5.反应体系C的温度降至30℃以下时,加入中和剂中和,然后加水乳化,再除去丙酮,得到所述具有支化结构无氟织物拒水剂。
步骤4中,丙酮的质量与二异氰酸酯、长链烷烃类扩链剂、有机硅氧烷、亲水扩链剂、催化剂、中和剂、封端剂和小分子多元醇质量之和的比为0.3~0.5:1。
有益效果:
本发明所述的制备方法中,将具有拒水优势的支化结构以及长链烷烃引入到有机硅改性水性聚氨酯拒水剂分子中,使所制备的具有支化结构的无氟拒水剂一方面克服了含氟拒水剂对环境危害大以及具有生物积累毒性的缺点,另一方面解决了现有无氟拒水剂耐久性差的问题,提升了拒水效果。
具体实施方式
下面结合具体实施例对本发明作进一步的阐述。
以下实施例中:
端氨丙基聚二甲基硅氧烷:数均分子量为2000,分析纯,上海四里工贸有限公司;
端羟丙基聚二甲基硅氧烷:数均分子量为2000,分析纯,上海四里工贸有限公司;
硅醇基聚二甲基硅氧烷:数均分子量为2000,分析纯,上海四里工贸有限公司;
拒水等级测试:先用水将实施例中制备得到的具有支化结构无氟织物拒水剂的浓度稀释到60g/L,然后采用一浸一轧的工艺对春亚纺进行织物整理,其中轧余率为60%,最后在160℃下烘焙定型2min;然后参照标准HG/T 4264-2011和GB 5554-85对进行织物整理后的春亚纺进行拒水等级测试。
实施例1
二异氰酸酯23.1份,长链烷烃类扩链剂11.3份,有机硅氧烷43.7份,亲水扩链剂5.8份,催化剂0.1份,中和剂3.6份,封端剂10.6份,小分子多元醇1.1份,水494份,丙酮50份;
步骤1.将30.1g端氨丙基聚二甲基硅氧烷和0.75g三羟基丙烷加入烧瓶中,在100℃下抽真空1h,去除水分;
步骤2.烧瓶中混合溶液的温度降至40℃时,加入15.9g IPDI和0.068g T12,然后升温至75℃,搅拌反应6h,得到反应体系A;
步骤3.反应体系A的温度降至50℃时,加入7.8g单硬脂酸甘油酯,然后升温至75℃,搅拌反应5h,得到反应体系B;
步骤4.反应体系B的温度降至35℃时,加入4g二乙醇胺和34.4g丙酮,然后在50℃下搅拌反应1h,再加入7.3g丁酮肟,继续搅拌反应0.5h,得到反应体系C;
步骤5.反应体系C的温度降至25℃时,加入2.5g冰醋酸中和,然后加340g水乳化,再在旋转蒸发仪上除去溶剂丙酮,得到所述具有支化结构无氟织物拒水剂。
取35mL本实施例中制备的拒水剂装入50mL离心管中,然后在3000rpm的转速下离心15min,离心管中无沉淀,说明该拒水剂具有6个月的贮存稳定性。使用本实施制备的拒水剂对春亚纺进行织物整理,然后参照标准HG/T4264-2011和GB 5554-85进行拒水等级测试,测试评分为80分。
实施例2
二异氰酸酯31.7份,长链烷烃类扩链剂19.5份,有机硅氧烷23.7份,亲水扩链剂6.3份,催化剂0.1份,中和剂9.2份,封端剂8.2份,小分子多元醇1.2份,水120份,丙酮30份;
步骤1.将16.8g端羟丙基聚二甲基硅氧烷和0.88g三羟基丙烷加入烧瓶中,在110℃下抽真空1.5h,去除水分;
步骤2.烧瓶中混合溶液的温度降至40℃时,加入22.5g TDI和0.07g T12,然后升温至90℃,搅拌反应3h,得到反应体系A;
步骤3.反应体系A的温度降至45℃时,加入13.8g单硬脂酸甘油酯,然后升温至85℃,搅拌反应3h,得到反应体系B;
步骤4.反应体系B的温度降至40℃时,加入4.5g N-MDEA和21.3g丙酮,然后在65℃下搅拌反应1.5h,再加入5.8g硫醇,继续搅拌反应0.5h,得到反应体系C;
步骤5.反应体系C的温度降至25℃时,加入6.5g冰醋酸中和,然后加85.1g水乳化,再在旋转蒸发仪上除去溶剂丙酮,得到所述具有支化结构无氟织物拒水剂。
取35mL本实施例中制备的拒水剂装入50mL离心管中,然后在3000rpm的转速下离心15min,离心管中无沉淀,说明该拒水剂具有6个月的贮存稳定性。使用本实施制备的拒水剂对春亚纺进行织物整理,然后参照标准HG/T4264-2011和GB 5554-85进行拒水等级测试,测试评分为100分。
实施例3
二异氰酸酯28.1份,长链烷烃类扩链剂15.4份,有机硅氧烷31.8份,亲水扩链剂8.1份,催化剂0.09份,中和剂3份,封端剂11.4份,小分子多元醇2.2份,水300份,丙酮45份;
步骤1.将22.25g硅醇基聚二甲基硅氧烷和1.55g季戊四醇加入烧瓶中,在90℃下抽真空2h,去除水分;
步骤2.烧瓶中混合溶液的温度降至50℃时,加入19.7g HDI和0.06g T9,然后升温至98℃,搅拌反应2h,得到反应体系A;
步骤3.反应体系A的温度降至50℃时,加入10.8g双硬脂酸甘油酯,然后升温至85℃,搅拌反应3h,得到反应体系B;
步骤4.反应体系B的温度降至35℃时,加入5.7g三乙醇胺和31.5g丙酮,然后在50℃下搅拌反应2h,再加入8g苯酚,继续搅拌反应1h,得到反应体系C;
步骤5.反应体系C的温度降至25℃时,加入2.1g盐酸中和,然后加210g水乳化,再在旋转蒸发仪上除去溶剂丙酮,得到所述具有支化结构无氟织物拒水剂。
取35mL本实施例中制备的拒水剂装入50mL离心管中,然后在3000rpm的转速下离心15min,离心管中无沉淀,说明该拒水剂具有6个月的贮存稳定性。使用本实施制备的拒水剂对春亚纺进行织物整理,然后参照标准HG/T4264-2011和GB 5554-85进行拒水等级测试,测试评分为85分。
实施例4
二异氰酸酯36.6份,长链烷烃类扩链剂17.7份,有机硅氧烷24.8份,亲水扩链剂7.1份,催化剂0.09份,中和剂3.5份,封端剂10.3份,小分子多元醇1.2份,水200份,丙酮35份;
步骤1.将16.1g端氨丙基聚二甲基硅氧烷和0.8g丙三醇加入烧瓶中,在110℃下抽真空0.5h,去除水分;
步骤2.烧瓶中混合溶液的温度降至45℃时,加入23.8g TDI和0.06g T12,然后升温至85℃,搅拌反应3h,得到反应体系A;
步骤3.反应体系A的温度降至50℃时,加入11.5g辛酸甘油酯,然后升温至90℃,搅拌反应3h,得到反应体系B;
步骤4.反应体系B的温度降至35℃时,加入4.6g N-MDEA和23g丙酮,然后在45℃下搅拌反应2h,再加入6.7g丁酮肟,继续搅拌反应1h,得到反应体系C;
步骤5.反应体系C的温度降至25℃时,加入2.3g冰醋酸中和,然后加130g水乳化,再在旋转蒸发仪上除去溶剂丙酮,得到所述具有支化结构无氟织物拒水剂。
取35mL本实施例中制备的拒水剂装入50mL离心管中,然后在3000rpm的转速下离心15min,离心管中无沉淀,说明该拒水剂具有6个月的贮存稳定性。使用本实施制备的拒水剂对春亚纺进行织物整理,然后参照标准HG/T4264-2011和GB 5554-85进行拒水等级测试,测试评分为90分。
实施例5
二异氰酸酯28.1份,长链烷烃类扩链剂20.4份,有机硅氧烷29.3份,亲水扩链剂5.8份,催化剂0.09份,中和剂3.5份,封端剂11.2份,小分子多元醇1.5份,水250份,丙酮40份;
步骤1.将19.8g端羟丙基聚二甲基硅氧烷和1.02g三羟基丙烷加入烧瓶中,在100℃下抽真空1h,去除水分;
步骤2.烧瓶中混合溶液的温度降至60℃时,加入19g TDI和0.06g T12,然后升温至90℃,搅拌反应3h,得到反应体系A;
步骤3.反应体系A的温度降至50℃时,加入13.8g十六烷酸甘油酯,然后升温至85℃,搅拌反应2h,得到反应体系B;
步骤4.反应体系B的温度降至35℃时,加入3.9g N-MDEA和27g丙酮,然后在50℃下搅拌反应1h,再加入7.6g苯酚,继续搅拌反应0.5h,得到反应体系C;
步骤5.反应体系C的温度降至25℃时,加入2.4g冰醋酸中和,然后加168.8g水乳化,再在旋转蒸发仪上除去溶剂丙酮,得到所述具有支化结构无氟织物拒水剂。
取35mL本实施例中制备的拒水剂装入50mL离心管中,然后在3000rpm的转速下离心15min,离心管中无沉淀,说明该拒水剂具有6个月的贮存稳定性。使用本实施制备的拒水剂对春亚纺进行织物整理,然后参照标准HG/T4264-2011和GB 5554-85进行拒水等级测试,测试评分为85分。
本发明包括但不限于以上实施例,凡是在本发明的精神和原则之下进行的任何等同替换或局部改进,都将视为在本发明的保护范围之内。
Claims (5)
1.一种具有支化结构无氟织物拒水剂,其特征在于:所述拒水剂中的组分及其质量份数如下:二异氰酸酯15.5~36.8份,长链烷烃类扩链剂10.3~26.5份,有机硅氧烷17.2~48.6份,亲水扩链剂3.2~8.6份,催化剂0.08~0.13份,中和剂1.8~9.5份,封端剂3.4~12份,小分子多元醇0.5~5.5份以及水52~700份;
所述长链烷烃类扩链剂为单硬脂酸甘油酯、双硬脂酸甘油酯、十六烷酸甘油酯或辛酸甘油酯;
所述亲水扩链剂为N-甲基二乙醇胺、二乙醇胺或三乙醇胺;
所述中和剂为盐酸或冰醋酸;
所述催化剂为二月桂酸二丁基锡或辛酸亚锡;
所述封端剂为丁酮肟、硫醇或苯酚;
所述小分子多元醇为三羟甲基丙烷、季戊四醇或丙三醇。
2.根据权利要求1所述的一种具有支化结构无氟织物拒水剂,其特征在于:所述二异氰酸酯为甲苯二异氰酸酯、异氟尔酮二异氰酸酯、二苯基甲烷二异氰酸酯、氢化苯基甲烷二异氰酸酯或六亚甲基二异氰酸酯。
3.根据权利要求1所述的一种具有支化结构无氟织物拒水剂,其特征在于:所述有机硅氧烷为端羟丙基聚二甲基硅氧烷、端氨丙基聚二甲基硅氧烷或硅醇基聚二甲基硅氧烷。
4.一种如权利要求1至3任一项所述的具有支化结构无氟织物拒水剂的制备方法,其特征在于:所述制备方法的具体步骤如下:
步骤1.将有机硅氧烷和小分子多元醇的混合溶液在90~110℃的真空条件下搅拌脱水0.5~2h;
步骤2.步骤1中混合溶液的温度降至40~65℃时,加入二异氰酸酯和催化剂,然后升温至70~100℃,反应2~6h,得到反应体系A;
步骤3.反应体系A的温度降至40~55℃时,加入长链烷烃类扩链剂,然后升温至70~90℃,反应2~6h,得到反应体系B;
步骤4.反应体系B的温度降至30~55℃时,加入亲水扩链剂和丙酮,然后在40~65℃下反应0.5~2h,再加入封端剂,继续反应0.5~1h,得到反应体系C;
步骤5.反应体系C的温度降至30℃以下时,加入中和剂中和,然后加水乳化,再除去丙酮,得到所述具有支化结构无氟织物拒水剂。
5.根据权利要求4所述的一种具有支化结构无氟织物拒水剂的制备方法,其特征在于:步骤4中,丙酮的质量与二异氰酸酯、长链烷烃类扩链剂、有机硅氧烷、亲水扩链剂、催化剂、中和剂、封端剂和小分子多元醇质量之和的比为0.3~0.5:1。
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