CN111057209A - 一种纺织品用水性透湿、阻燃聚氨酯涂层胶及制备方法 - Google Patents

一种纺织品用水性透湿、阻燃聚氨酯涂层胶及制备方法 Download PDF

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CN111057209A
CN111057209A CN201911374446.XA CN201911374446A CN111057209A CN 111057209 A CN111057209 A CN 111057209A CN 201911374446 A CN201911374446 A CN 201911374446A CN 111057209 A CN111057209 A CN 111057209A
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唐丽
赫荣君
陈剑冰
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Liaoning Fixed Star Fine Chemical Co ltd
Dandong Unik Textile Ltd
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Dandong Unik Textile Ltd
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Abstract

本发明一种纺织品用水性透湿、阻燃聚氨酯涂层胶及制备方法,由异佛尔酮二异氰酸酯、氢化MDI、环氧乙烷和四氢呋喃共聚醚多元醇、聚已内酯多元醇、阻燃聚酯多元醇、环氧乙烷和四氢呋喃共聚醚多元醇、扩链剂、小分子扩链剂、有机硅多元醇、去离子水经预聚反应、扩链反应、乳化反应、扩链反应、封闭反应制成乳液,再经复配助剂制成纺织品涂层胶;其成膜柔软、弹性好、干爽,同时达到透湿好、阻燃好、耐寒好、耐水压高、断裂强力大、耐洗牢度好、断裂伸长率高,适用于棉、尼龙、涤纶面料涂层处理。

Description

一种纺织品用水性透湿、阻燃聚氨酯涂层胶及制备方法
技术领域
本发明涉及的是一种纺织品用水性透湿、阻燃聚氨酯涂层胶及制备方法;该聚氨酯涂层胶成膜柔软、弹性好、干爽,同时达到透湿好、阻燃好、耐寒好、耐水压高、断裂强力大、断裂伸长率高、耐洗牢度好特性。
本发明涂层胶,涂在棉、尼龙、涤纶面料上使用。
其主要应用于户外服装、行业服装、帐篷、汽车内饰、包装袋等面料处理,以提高面料的透湿性和阻燃性能。
背景技术
聚氨酯类产品实现阻燃需要外添加阻燃剂来实现。
目前,聚氨酯类产品实现防水透湿性和阻燃性能是在具有透湿性能的溶剂型聚氨酯中加入阻燃添加剂来实现。阻燃添加剂主要为含卤素的溴、锑及氯化石蜡等类型物质。
溶剂型聚氨酯本身含有甲苯、N、N二甲基甲酰胺,生产和使用过程会对环境和人体产生伤害,而且添加卤素的阻燃剂欧盟已经列入限制物质。
水性聚氨酯添加阻燃剂虽能达到阻燃效果,但透湿性、耐水压达不到使用要求,即满足不了透湿好、阻燃好、耐水压高的特性,并且不环保。
专利CN201110119112.5公开了一种水性阻燃聚氨酯树脂及制备方法,其作为织物处理的阻燃涂层胶,其是一种含溴阻燃聚醚的水性聚氨酯树脂,固含量在20~40%。制备方法由制备含溴聚醚的聚氨酯预聚体A、制备含溴聚醚的封闭异氰酸酯的聚氨酯B,把上述的预聚体A和聚氨酯B进行乳化扩链反应,制得水性阻燃聚氨酯树脂。其具有校好的阻燃性能和水洗牢度,但其只是单纯的阻燃,并没有具体表述产品树脂具有透湿、耐水压特性。
专利CN201611260755.0公开了一种三聚氰胺改性水性聚氨酯阻燃树脂及制备方法,其由多异氰酸酯、多元醇、多元胺类扩链剂、低聚物多元醇、二羟甲基丙酸、三聚氰胺、中和剂和去离子水通过化学反应制得,具有优良的阻燃性,良好的附着力、保色性、耐腐蚀性、耐水性、耐碱性、耐磨性、极低的VOC环保。并表明其用于水性防火涂料、水性阻燃涂料、水性防腐涂料、水性防水防潮涂料、水性工程特种涂料、水性木器涂料等,还可用于皮革鞣皮剂、合成防火层板的粘接剂、混凝土的防水剂等。但并没有提到可用于纺织品上,没有表明可使用于纺织品涂层胶。
专利CN201611232607.8公开了一种水性阻燃聚合物的制备方法,特别是一种水性聚氨酯阻燃物的制备方法。其采用两种聚多元醇、异佛尔酮二异氰酸酯、六亚甲基二异氰酸酯为单体,并加入磷硅复合阻燃剂,通过预聚合、中和、乳化、扩链来制备聚合物,表明其制备的水性阻燃聚合物具有无卤、低烟、低毒性等优点,并且保持了其力学性能,产品具有很好的高分子材料相容性和环境友好性。其产品通过复配添加磷硅复合阻燃剂,并不是接枝改性产品。而且也没有表述用于哪个领域及产品具体特点,没有表述可用于纺织品涂层胶。
发明内容
本发明涉及的是一种纺织品用水性透湿、阻燃聚氨酯涂层胶及制备方法;该聚氨酯乳液涂层胶成膜柔软、弹性好、干爽,同时达到透湿好、阻燃好、耐寒好、耐水压高、断裂强力大、耐洗牢度好、断裂伸长率高;
本发明纺织品用水性透湿阻燃聚氨酯涂层胶选用于棉、尼龙、涤纶面料使用。
其主要应用于户外服装、行业服装、帐篷、汽车内饰、包装袋等面料处理,以提高面料的透湿性和阻燃性能。
本发明纺织品用水性透湿、阻燃聚氨酯涂层胶制备方法:
原料按重量配比:
(1)预聚反应:将异佛尔酮二异氰酸酯30-48份、氢化MDI 25-55 份、分子量为1000-3000的环氧乙烷和四氢呋喃共聚醚多元醇50-80份、分子量为100-500的聚已内酯多元醇5-15份、分子量为1000-3000的阻燃聚酯多元醇30-70份、分子量为100-800的环氧乙烷和四氢呋喃共聚醚多元醇10-30份加入反应釜中,升温至85-90℃搅拌反应3.5-4小时;
(2)扩链反应:加入分子量为200-550的扩链剂10-20份,在85-90℃反应3-4小时;
(3)乳化反应:加入去离子水180-500份,快速分散,然后在50-70℃保温反应1-1.5小时;
(4)扩链反应:控温40-60℃加入小分子扩链剂6-15份,40-60℃保温反应3-4小时;
(5)封闭反应:控温在40-45℃,加入分子量为1000-3000的有机硅多元醇30-50份,反应2-2.5小时,降温至20-35℃放料,得乳液;
(6)取上述乳液100份、消泡剂0.1-0.3份、滑爽剂1-5份、增稠剂1-3份、交联剂1-5份,依次加入釜中混合搅拌均匀,得纺织品用水性透湿阻燃聚氨酯涂层胶,粘度为3000-4000cps/25℃;
扩链剂:为羟基磺酸盐和氨基磺酸盐其一或混合使用;
小分子扩链剂:为2,4-二乙基-1,5-戊二醇(DEPD)、1,4-二羟甲基环己烷(CHDM)、乙二胺、异佛尔酮二胺、三乙烯二胺其一或几种混合使用;
消泡剂:为有机硅类消泡剂;
滑爽剂:为改性有机硅类滑爽剂;
增稠剂:为改性丙烯酸酯类型增稠剂;
交联剂:为封闭型异氰酸酯交联剂。
本发明生产工艺简单方便,具有良好的工艺实施性,生产成本低,水性环保无污染,而且固体含量高,不但减少了合成工序、降低了生产成本,而且贮运安全方便,同时也减少了运输成本。
本发明聚氨酯乳液成膜柔软、弹性好、干爽,同时达到透湿好、阻燃好、耐寒好、耐水压高、断裂强力大、断裂伸长率高、耐洗牢度好的特性。
本发明纺织品用水性防水透湿、阻燃聚氨酯乳液是利用接枝嫁接改性技术方法,聚氨酯聚合物分子链段嫁接亲水聚醚改性烃羟基有机硅和环氧乙烷和四氢呋喃共聚醚多元醇,两种多元醇均具有亲水基团,亲水基团的引入满足了透湿性能;使用含有N、P两种元素的阻燃聚酯多元醇参与反应,N、P元素与硅元素产生协同效应,达到阻燃效果,使水性聚氨酯乳液即具透湿性,又具有阻燃性能。
众所周知,水性聚氨酯乳液由不同结构的异氰酸酯和聚酯多元醇、聚醚多元醇及扩链剂等原料加成反应而得。
本发明异氰酸酯原料选择了异佛尔酮二异氰酸酯和氢化MDI两种,两种异氰酸酯合理比例搭配使用不但能使反应顺利进行并且能使耐水压、耐洗性、成膜强度、干爽度等性能得到保证。
异佛尔酮二异氰酸酯具有环状结构且含有顺式和反式不对称结构,此结构增加分子间斥力且形成位阻,在合成过程中环状结构稳定,形成高聚物后仍能存在,增加了产品分子间斥力,产品微观粒子不易产生团聚,有效降低乳液粘度,可以得到高固含量的乳液,此结构可以增加产品成膜刚性,弹性好,耐磨性、干爽度及牢度能得到增强。而异佛尔酮二异氰酸酯的异构体环状结构,除具上述特性外,两个环上的异氰酸酯基团活性不同,反应速度不同,相差8-10倍,使反应过程更平稳;氢化MDI是直链环状结构,反应速度平稳,具有刚性,能够增加产品耐磨及耐水压性能;引入直链结构和异构结构的异氰酸酯二者合适比例的搭配,产品的断裂强度、耐洗性更好。如本发明选用其它类型异氰酸酯如六亚甲基异氰酸酯链段柔性会增强,但耐磨、耐水、断裂强力会降低,手感干爽度也会下降;如选用TDI或MDI异氰酸酯,二者具黄变性,做成膜涂层胶时间久了会产生黄变和降解。因此不适合本发明。
本发明的多元醇选用了不同结构、不同分子量的环氧乙烷和四氢呋喃共聚醚多元醇、有机硅多元醇、聚己内酯多元醇、阻燃聚酯多元醇。
本发明采用环氧乙烷和四氢呋喃共聚醚多元醇两类不同官能团及分子量且不同比例的的共聚醚多元醇,大分子量选用两官能,而小分子量选用三官能,达到透湿,耐寒目的同时,三官能增加自交联性,利于强度、牢度提升。如果全部选用大分子量多元醇会使产品结晶度增加,耐寒性降低;全部选用小分子量多元醇透湿量会下降,满足不了高透湿要求。
本发明采用有机硅多元醇为2官能亲水聚醚改性烃羟基有机硅,烃羟基不会水解,增加了产品稳定性;且羟基接在了一端,因此,耐水、耐寒性好,同时亲水聚醚改性有机硅多元醇和环氧乙烷和四氢呋喃共聚醚多元醇能够协同作用,对透湿提供了进一步保证。
本发明聚己内酯多元醇采用三官能产品,增加交联牢度的同时其玻璃化温度低,低温环境下,链段可以自由旋转,耐寒性好,低温环境下仍能保持良好柔软度。
本发明选用环氧乙烷和四氢呋喃共聚醚多元醇具有偶碳结构,产品成膜粘结牢度好。具有优良的力学性能、耐水解性、耐热性、耐氧化性及耐磨性,因此产品成膜牢度、弹性、耐热性、耐水解性、耐磨性、干爽度得到很大加强。
本发明选用的阻燃聚酯多元醇侧链含有P、N结构,且P、N含量高,达40%,接枝改性水性聚氨酯中达到阻燃效果,由于存在于侧链部位克服了聚酯易水解的缺点,产品性能稳定,另外,有机硅多元醇接入,Si、P、N协同作用,阻燃性能更好。
本发明的扩链剂选用羟基磺酸盐和氨基磺酸盐其一或混合使用;
选用两种磺酸盐(羟基磺酸盐和氨基磺酸盐)作为亲水扩链剂,氨基磺酸盐反应速度快,而羟基磺酸盐反应速度相对较慢,两种磺酸盐反应速度不同,保证了产品反应过程的平稳,另外磺酸盐聚氨酯耐强酸、强碱、耐电解质性能好,产品的应用更加广泛,对添加剂的耐受性优异,而羧酸型扩链剂耐电解质和耐强酸、强碱性均不好,无法满足本发明耐洗要求。
本发明小分子扩链剂选用2,4-二乙基-1,5-戊二醇(DEPD)、1,4-二羟甲基环己烷(CHDM)、乙二胺、异佛尔酮二胺、三乙烯二胺其一或几种混合使用。
由于2,4-二乙基-1,5-戊二醇、1,4-二羟甲基环己烷二者均含有侧链结构,增加分子间斥力,降低合成乳液粘度,利于高含量乳液实现;侧链结构利于牢度、耐水性增强,进一步保证了粘结牢度、耐水压、耐水洗性;而乙二胺、异佛尔酮二胺、三乙烯二胺的参与反应形成脲键,提高产品刚性,提高牢度、耐水洗、耐水、断裂强力。
本发明选用的有机硅多元醇采取最后加入,进行最综封闭反应,为了使有机硅链段接在聚氨酯外层,除了具有上述的透湿、阻燃协同性能,还能增加手感滑爽度以及耐寒、耐水性能;
本发明选用有机硅多元醇羟基在同一端,反应时位阻大,只能一个羟基参与反应,如反应开始加入,会是阻止加成反应顺利进行,会影响产品的最综性能,如选用两侧羟基有机硅多元醇两个羟基的活性相同,反应速度一致,达不到封闭目的,还会产生凝胶。
本发明水性防水透湿、阻燃聚氨酯乳液可以复配消泡剂、增稠剂、消光剂、手感剂等特色助剂做成涂层胶,用于纯棉、尼龙、涤纶等面料涂层处理,较少的带浆量可以得到高的耐水压、透湿并阻燃性能好。
本发明消泡剂采用有机硅类消泡剂,具长效特性,不但能消除膜胶制作过程产生的气泡,还能迅速消除制膜涂覆过程运动产生的气泡,如采用矿物油类消泡剂会产生油斑,会影响膜连续性。
本发明滑爽剂采用改性有机硅类滑爽剂,具有高滑爽度。
本发明增稠剂采用改性丙烯酸酯类增稠剂,增稠同时改善膜胶的流平性能,保证膜的均匀性实现。
本发明交联剂采用封闭型异氰酸酯交联剂,解闭温度低,解闭后释放活性异氰酸酯基团增加膜的断裂强力及耐水性。
具体实施方式
实施例1
原料按重量配比:
(1)预聚反应:将异佛尔酮二异氰酸酯40份、氢化MDI 55份、分子量为1800的环氧乙烷和四氢呋喃共聚醚多元醇60份、分子量为200的聚已内酯多元醇8份、分子量为2000的阻燃聚酯多元醇35份、分子量为400的环氧乙烷和四氢呋喃共聚醚多元醇 18份加入反应釜中,升温至86℃搅拌反应4小时;
(2)扩链反应:加入分子量为250的羟基磺酸盐10份,分子量为490的氨基磺酸盐5份,在85℃反应3.5小时;
(3)乳化反应:加入去离子水280份,快速分散,然后在55℃保温反应1.5小时;
(4)扩链反应:控温50℃加入2,4-二乙基-1,5-戊二醇10份,1,4-二羟甲基环己烷3份,乙二胺2份,50℃保温反应3.5小时;
(5)封闭反应:控温至42℃,加入分子量为1900有机硅多元醇35份,搅拌反应2.5小时,再降温25℃放料得乳液;
(6)取上述乳液100份、消泡剂0.13份、滑爽剂1.5份、增稠剂1.8份、交联剂2份,依次加入釜中混合搅拌均匀,得涂层胶产品,粘度为3400cps/25℃。
该实施例中氢化MDI和小分子扩链剂用量较大,断裂强力增强,手感会更干爽。
实施例2
原料按重量配比:
(1)预聚反应:将异佛尔酮二异氰酸酯48份、氢化MDI 35 份、分子量为2000的环氧乙烷和四氢呋喃共聚醚多元醇80份、分子量为200的聚已内酯多元醇10份、分子量为1500的阻燃聚酯多元醇50份、分子量为500的环氧乙烷和四氢呋喃共聚醚多元醇 18份加入反应釜中,升温至85℃搅拌反应3.5小时;
(2)扩链反应:加入分子量为300的羟基磺酸盐7.5份,加入分子量为360的氨基磺酸盐7.5份,在86℃反应4小时;
(3)乳化反应:加入去离子水315份,快速分散,然后在60℃保温反应1小时;
(4)扩链反应:控温60℃,加入2,4-二乙基-1,5-戊二醇4份,1,4-二羟甲基环己烷2份,异佛尔酮二胺1份,在60℃保温反应3小时;
(5)封闭反应:控温至40℃,加入分子量为2000的有机硅多元醇50份,搅拌反应2小时,再降温25℃放料得乳液。
(6)取上述乳液100份、消泡剂0.3份、滑爽剂5份、增稠剂2.3份、交联剂2.5份,依次加入釜中混合搅拌均匀制成面料涂层用涂层胶,粘度为3500cps/25℃;
该实施例产品由于原料配比中有机硅多元醇、环氧乙烷和四氢呋喃共聚多元醇使用量较大,因此透湿、耐寒性会更优异。
实施例3
原料按重量配比:
(1)预聚反应:将异佛尔酮二异氰酸酯43份、氢化MDI 35 份、分子量为3000的环氧乙烷和四氢呋喃共聚醚多元醇55份、分子量为200的聚已内酯多元醇8份、分子量为2500的阻燃聚酯多元醇60份、分子量为400的环氧乙烷和四氢呋喃共聚醚多元醇 10份加入反应釜中,升温至87℃搅拌反应3.5小时;
(2)扩链反应:加入分子量为300的羟基磺酸盐15份,加入分子量为360的氨基磺酸盐3份,在86℃反应3.5小时;
(3)乳化反应:加入去离子水285份,快速分散,然后在60℃保温反应1小时;
(4)扩链反应:控温55℃,加入2,4-二乙基-1,5-戊二醇4份,1,4-二羟甲基环己烷2份,乙二胺8份,在55℃保温反应3.5小时;
(5)封闭反应:控温至43℃,加入分子量为3000的有机硅多元醇50份,搅拌反应2.5小时,再降温26℃放料得乳液;
(6)取上述乳液100份、消泡剂0.15份、滑爽剂3.5份、增稠剂2.3份、交联剂2.6份,依次加入釜中混合搅拌均匀,得涂层胶产品,粘度为3800cps/25℃。
该实施例产品由于原料组份阻燃聚酯多元醇和有机硅多元醇加入量较大,因此阻燃性会好。
实施例4
原料按重量配比:
(1)预聚反应:将异佛尔酮二异氰酸酯40份、氢化MDI 35 份、分子量为3000的环氧乙烷和四氢呋喃共聚醚多元醇55份、分子量为200的聚已内酯多元醇15份、分子量为1500的阻燃聚酯多元醇50份、分子量为500的环氧乙烷和四氢呋喃共聚醚多元醇 10份加入反应釜中,升温至88℃搅拌反应4小时;
(2)扩链反应:加入分子量为330的羟基磺酸盐12份,分子量为390的氨基磺酸盐3份,在89℃反应3.5小时;
(3)乳化反应:加入去离子水280份,快速分散,然后在60℃保温反应1小时;
(4)扩链反应:控温60℃,加入2,4-二乙基-1,5-戊二醇1份,1,4-二羟甲基环己烷4份,在60℃保温反应4小时;
(5)封闭反应:控温至45℃,加入分子量为1500的有机硅多元醇元醇50份,搅拌反应2.5小时,再降温29℃放料得乳液;
(6)取上述乳液100份、消泡剂2.3份、滑爽剂3.5份、增稠剂2份、交联剂3.2份,依次加入釜中混合搅拌均匀,得涂层胶产品,粘度为4000cps/25℃。
该实施例产品由于原料组份氢化MDI用量较大,弹性、刚性好,断裂强力增大;采用分子量为3000的环氧乙烷和四氢呋喃共聚醚多元醇分子量较大,且共聚醚中环氧乙烷比例较大,因此透湿性好,且乳液粒子更细,稳定性更佳。
实施例5
原料按重量配比:
(1)预聚反应:将异佛尔酮二异氰酸酯48份、氢化MDI 30 份、分子量为2500的环氧乙烷和四氢呋喃共聚醚多元醇60份、分子量为230的聚已内酯多元醇9份、分子量为2000的阻燃聚酯多元醇70份、分子量为600的环氧乙烷和四氢呋喃共聚醚多元醇 15份加入反应釜中,升温至89℃搅拌反应3.5小时;
(2)扩链反应:加入分子量为330的羟基磺酸盐12份,分子量为550的氨基磺酸盐6份,在85反应4小时;
(3)乳化反应:加入去离子水300份,快速分散,然后在50℃保温反应1.5小时;
(4)扩链反应:控温55℃,加入2,4-二乙基-1,5-戊二醇3份,1,4-二羟甲基环己烷3份,三乙烯二胺3份,在55℃保温反应3.5小时;
(5)封闭反应:控温至44℃,加入分子量为2000的有机硅多元醇50份,搅拌反应2.5小时,再降温31℃放料得乳液;
(6)取上述乳液100份、消泡剂0.23份、滑爽剂4.5份、增稠剂2.6份、交联剂2.5份,依次加入釜中混合搅拌均匀,得涂层胶产品,粘度为3800cps/25℃。
该实施例产品由于原料阻燃聚酯多元醇和有机硅多元醇用量较大,阻燃产生协同,阻燃效果更好,手感软,耐寒性更好;环氧乙烷和四氢呋喃共聚醚多元醇选用2官能2500分子量和和三官能600分子量,小分子量协同大分子量搭配使用,合理配比保证透湿实现。
实施例6
原料按重量配比:
(1)预聚反应:将异佛尔酮二异氰酸酯40份、氢化MDI 55 份、分子量为3000的环氧乙烷和四氢呋喃共聚醚多元醇75份、分子量为300的聚已内酯多元醇10份、分子量为1500的阻燃聚酯多元醇50份、分子量为600的环氧乙烷和四氢呋喃共聚醚多元醇 13份加入反应釜中,升温至90℃搅拌反应3.5小时;
(2)扩链反应:加入分子量为490的羟基磺酸盐6份,分子量为550的氨基磺酸盐12份,在90℃反应4小时;
(3)乳化反应:加入去离子水306份,快速分散,然后在58℃保温反应1.5小时;
(4)扩链反应:控温40℃,加入乙二胺4份,异氟尔酮二胺4份,三乙烯二胺3份,在40℃保温反应3小时;
(5)封闭反应:控温至41℃,加入分子量为2000的有机硅多元醇40份,搅拌反应2.5小时,再降温34℃放料得乳液;
(6)取上述乳液100份、消泡剂0.22份、滑爽剂3.5份、增稠剂2.3份、交联剂2.3份,依次加入釜中混合搅拌均匀,得涂层胶产品,粘度为3200cps/25℃。
该实施例产品由于原料组份选用乙二胺、异佛尔酮二胺、三乙烯二胺扩链,弹性、刚性好,断裂强力增大;采用分子量为3000的环氧乙烷和四氢呋喃共聚醚多元醇,分子量较大,且占比较大,共聚醚中环氧乙烷比例较大,因此透湿性好,且乳液粒子更细,稳定性更佳。
试验检测1
选取实施例1-6涂层胶
产品对比:
分别取科思创聚合物中国有限公司产品1380乳液、选取鲁道夫化工(东莞)有限公司产品 GS乳液、兰州科天水性科技有限公司产品 803乳液100份与消泡剂0.23份、滑爽剂4.5份、增稠剂2.6份、交联剂2.5份,依次加入釜中混合搅拌均匀,制成面料涂层用涂层胶,粘度为3800cps/25℃。
上述实施例1-6和试验检测1:
所述的消泡剂:为上海桑井化工有限公司产品EASYTECH DF-106;
所述的滑爽剂:为陶氏化学公司产品3289;
所述的增稠剂:为辽宁恒星精细化工有限公司产品FS-165;
所述的交联剂:为辽宁恒星精细化工有限公司产品DF-819B。
使用190T涤纶面料,用2.0mm刮刀涂层一刀,150-160℃烘干1-1.5min,干增重13g/m2
表1.水性透湿阻燃聚氨酯涂层胶在190T涤纶面料应用检测结果
Figure DEST_PATH_IMAGE001
试验检测2
用试验检测1得到的涂层胶,使用纯棉面料40X40 133x72,用2.5mm刮刀涂层一刀,155-165℃烘干1-2min,干增重13g/m2
表2.水性透湿、阻燃聚氨酯涂层胶在纯棉面料应用检测结果
Figure 70812DEST_PATH_IMAGE002
试验检测3
用试验检测1得到的涂层胶,使用20D尼龙面料,用2.0mm刮刀涂层一刀,140-150℃烘干1-1.5min,干增重13g/m2
表3.水性防水透湿阻燃聚氨酯涂层胶在20D尼龙面料应用检测结果
Figure DEST_PATH_IMAGE003
含固量测试:按照HG/T 4266-2011 纺织染整助剂 含固量的测定 进行测试;
透湿性测试:按照GB/T 12704.2-2009 纺织品 织物透湿性试验方法第2部分:蒸发法进行测试;
阻燃性测试:按照GB/T 5455-2014 纺织品 燃烧性能 垂直方向 损毁长度阴燃和续燃时间的测定 进行测试;
静水压测试:按照GB/T 4744-2013 纺织品 防水性能的检测和评价 静水压法 进行测试;
从以上测试结果可以看出,本发明涂层胶产品耐水压、透湿、阻燃好,性能明显优于其它厂家产品。

Claims (2)

1.一种纺织品用水性透湿、阻燃聚氨酯涂层胶制备方法,其特征是:
原料按重量配比:
(1)预聚反应:将异佛尔酮二异氰酸酯30-48份、氢化MDI 25-55 份、分子量为1000-3000的环氧乙烷和四氢呋喃共聚醚多元醇50-80份、分子量为100-500的聚已内酯多元醇5-15份、分子量为1000-3000的阻燃聚酯多元醇30-70份、分子量为100-800的环氧乙烷和四氢呋喃共聚醚多元醇10-30份加入反应釜中,升温至85-90℃搅拌反应3.5-4小时;
(2)扩链反应:加入分子量为200-550的扩链剂10-20份,在85-90℃反应3-4小时;
(3)乳化反应:加入去离子水180-500份,快速分散,然后在50-70℃保温反应1-1.5小时;
(4)扩链反应:控温40-60℃加入小分子扩链剂6-15份,40-60℃保温反应3-4小时;
(5)封闭反应:控温在40-45℃,加入分子量为1000-3000的有机硅多元醇30-50份,反应2-2.5小时,降温至20-35℃放料,得乳液;
(6)取上述乳液100份、消泡剂0.1-0.3份、滑爽剂1-5份、增稠剂1-3份、交联剂1-5份,依次加入釜中混合搅拌均匀,得涂层胶产品;
扩链剂:为羟基磺酸盐和氨基磺酸盐其一或混合使用;
小分子扩链剂:为2,4-二乙基-1,5-戊二醇、1,4-二羟甲基环己烷、乙二胺、异佛尔酮二胺、三乙烯二胺其一或几种混合使用;
消泡剂:为有机硅类消泡剂;
滑爽剂:为改性有机硅类滑爽剂;
增稠剂:为改性丙烯酸酯类型增稠剂;
交联剂:为封闭型异氰酸酯交联剂。
2.如权利要求1所述制备方法得到的纺织品用水性透湿、阻燃聚氨酯涂层胶。
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