CN107418494A - 服装衬料用聚氨酯热熔胶及其制备方法 - Google Patents

服装衬料用聚氨酯热熔胶及其制备方法 Download PDF

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CN107418494A
CN107418494A CN201710429978.3A CN201710429978A CN107418494A CN 107418494 A CN107418494 A CN 107418494A CN 201710429978 A CN201710429978 A CN 201710429978A CN 107418494 A CN107418494 A CN 107418494A
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陈帅
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Nantong Henghua Bonded Mstar Technology Ltd
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Abstract

本发明提供的服装衬料用聚氨酯热熔胶及其制备方法,属于湿气固化型聚氨酯胶黏剂技术领域。其制备过程是将聚酯多元醇、聚醚多元醇、小分子扩链剂,以及可能需要的功能性树脂一并加热熔化,脱水处理后,和二异氰酸酯进行化学反应;之后加入催化剂、抗氧剂、光稳定剂、杀菌防霉剂搅拌均匀,在氮气保护状态下出料,密封包装,即得到面料粘合用热熔胶。本发明所得的服装衬料用聚氨酯热熔胶对有纺衬料、粘合衬料和薄膜的配伍性优、粘结性佳,同时耐水洗、耐压烫、透气性良好,还可以用于四面弹、针织布等纺织面料的粘结。

Description

服装衬料用聚氨酯热熔胶及其制备方法
技术领域
本发明所述的服装衬料用聚氨酯热熔胶及制备方法,涉及单组份湿气固化型聚氨酯热熔胶,属于面料用热熔胶的制备领域。
背景技术
随着现代人生活质量的提高,人们对穿着要求也愈来愈高,不再限于服装的造型、款式,更注重服装的面料是否舒适。在服装大世界里,服装的面料五花八门,日新月异,但是从总体上来讲穿着舒适、吸汗透气、悬垂挺括、触觉柔美等的面料倍受青睐。
衬料包括衬与衬垫两种,在工作服衣领、袖口、袋口、裙裤腰、衣边及西装胸部加贴的衬料为衬布,一般含有胶粒,通常称为粘合衬,有有纺衬布(梭织与针织)与无纺衬布两大类。服装粘合是利用粘合衬的热熔胶面和面料的反面覆合,在一定的温度、时间、压力下粘合在一起,达到使服装挺括、不易变形的目的。鉴于对布料粘合的特殊性,较高的熔胶温度会对面料的材质、透气性造成一定的影响,同时胶层的柔性、耐水性也是评估面料粘合的重要因素。新型面料的不断出现,对相符合的胶种也提出更高的要求,对于我国庞大的服装行业来说,面料和衬布的良好粘合是所面临的难题,对此问题的解决也会推动了我国面料胶行业高新技术的发展。
发明内容
本发明提供一种服装衬料和薄膜、薄型面料之间粘合的解决方案,也可以适用于衬料和梭织、针织、或无纺基布的粘合。该解决方案提供一种快速湿固化的聚氨酯热熔胶,以及施胶工艺条件。和传统的面料用胶相比,该热熔胶的粘度较低,固化后柔软性极佳,还确保粘合后布料和衬料间足够的挠度。得益于初期聚醚原料的选择,热熔胶具有很好的耐热性,保证成衣的面料在压烫、熨烫中具有良好稳定性,不会出现渗胶、硬化现象。
本发明采取以下技术方案:
服装衬料用聚氨酯热熔胶,其合成配方的各组分质量份数如下:
聚酯多元醇 10-30份
聚醚多元醇 30-50份
功能性树脂 0-15份
小分子扩链剂 0.5-5份
二异氰酸酯 10-25份
助剂 1-3份;
各组分总和为100;
其中,助剂包括催化剂、抗氧剂、光稳定剂、杀菌防霉剂中的一种或几种。
本发明所述的聚氨酯热熔胶的合成工艺路线如下:将聚酯多元醇、聚醚多元醇、小分子扩链剂、以及可能需要的功能性树脂一并加入反应釜,在110-160℃熔化2-4小时;充分混合熔化后,负压脱除水汽,再降温至60-80℃;加入纯度合格的二异氰酸酯,抽真空条件下反应20-60min;加入催化剂、抗氧剂、光稳定剂、杀菌防霉剂,通氮气下,过滤出料,密封包装,即得到服装衬料用聚氨酯热熔胶。
其中,所述的聚酯多元醇的分子量为1500-2500,具有一定结晶性,可由乙二醇、一缩二乙二醇、1,2-丙二醇、1,4-丁二醇、新戊二醇、1,6-己二醇和己二酸制备而成。可以是聚ε-己内酯多元醇,聚碳酸酯二醇。对分子链规整性好的聚酯多元醇,合成的胶黏剂表干和固化速度均较快;而采用支化度大的高分子量聚酯,胶样的强度会随之增加,优选的聚酯多元醇为聚己二酸己二醇酯二元醇,优选的分子量为1600-2000。
其中,所述的聚醚多元醇的分子量为1000-2000,可以由环氧丙烷、环氧乙烷、四氢呋喃为主体单体,采用KOH或者DMC为催化剂而制备得到。聚醚多元醇为以氧化丙烯(PO)为起始剂,KOH催化制备所得。聚醚多元醇,其可以为复合聚醚。当复合聚醚中低分子量聚醚含量多时,最终的胶样表现柔软,在同样羟值、分子量的聚醚中,优先选用KOH催化制备的聚醚多元醇,优先选用分子量为1200-1400的聚醚多元醇。
其中,所述的功能性树脂可以为热塑性丙烯酸酯树脂BR-106、BR-113,或者热塑性聚氨酯。添加树脂的作用为增加热熔胶对特定材质的附着力,或者改善热熔胶自身的内聚强度。比如,当衬料与塑料质薄膜的粘合,在配方中加入少量丙烯酸树脂BR-113,可以进一步改善粘结效果。
其中,所述的小分子扩链剂包括1,4-丁二醇、一缩二乙二醇、三羟甲基丙烷、甘油,比较常用的为1,4-丁二醇,三羟甲基丙烷,或者两者共用。当醇羟基和异氰酸酯的反应温度低于65℃时,可选择二元胺扩链剂,比如3,5 -二乙基甲苯二胺(EDTDA)。
其中,所述的二异氰酸酯为甲苯二异氰酸酯TDI、二苯基甲烷二异氰酸酯MDI、Wannate MDI-50、MDI-100L、碳化二亚胺改性MDI,考虑到反应活性和后期的固化速度,优选的二异氰酸酯为MDI-50。
其中,所述的催化剂为三亚乙基二胺、双(二甲氨基乙基)醚、2-(2-二甲氨基-乙氧基)乙醇(DMAEE)、双(2,2-吗啉乙基)醚(DMDEE)等,优选的为DMDEE。该催化剂品类为胺类催化剂,可以催化未反应的NCO基团同空气中湿气反应,加速固化过程。
对于配方中所涉及的少量助剂,其中,所述的抗氧剂包括2,6-二叔丁基对甲苯酚(BHT)、抗氧剂1010、抗氧剂1135、抗氧剂5057,优选为抗氧剂1010,特别适宜的添加量为0.3份;光稳定剂为紫外吸收剂Tinuvin213、Tinuvin517、UV-327、UV-328,优选为紫外吸收剂Tinuvin213,特别适宜的添加量为0.1份;杀菌防霉剂为辛基异噻唑啉酮、2-甲基-4-异噻唑啉-3-酮,该类助剂应根据面料的曝露环境而选择加入。
本发明所制备的热熔胶主体成分为带有活性基团的聚氨酯,可以利用空气中水分较快固化,表现为一定的发泡现象。在密封保存的条件下,该热熔胶具有很好的放置稳定性,粘度变化不大,加热后,聚氨酯分子间氢键的弱化使其呈熔融态,可以实现胶液的涂布,或向面料转移。依据实际经验,本发明的所得的服装衬料用聚氨酯热熔胶,在80-100℃下可以顺利涂布,初步粘结强度良好,在常温环境下24小时可以完成固化,达到较好的粘结效果。
对衬料和薄膜、薄型面料之间粘合后效果的评估主要有面料手感、剥离强度、渗料性、粘合后起泡、是否出现粘衬印痕、水洗后剥离强度、水洗后起泡、是否有泛黄现象。本发明的原料选择结晶性聚酯二元醇和分子量较低的复合聚醚多元醇,两者相容性极佳,制备的聚氨酯热熔胶在固化后呈柔软态,手感适宜;合成的热熔胶内部分子组成致密,交联适度,对面料的配伍性好,具有很好的剥离强度,热稳定性良好,也不会出现渗胶现象。在经过化学干洗和水洗之后,衬料和薄膜间的剥离强度没有明显下降,几乎无脱胶、起泡和体积收缩出现。无论是未固化的固体热熔胶,熔融态下的胶液,还是固化后的胶样,均无泛黄现象,无刺激性气味。
具体实施方式
实施例1
所述的服装衬料用聚氨酯热熔胶的配方组成及制备工艺如下:
将20份分子量为2000的聚己二酸己二醇酯二元醇、40份分子量为1450的聚氧化丙烯二醇(PPG)、2份1,4-丁二醇一并加入反应釜,在120℃熔化2.5小时;充分混合熔化后,负压脱除水汽,真空度为0.09MPa,抽气时间保持1小时;再降温至65℃,加入37份纯度合格的MDI-50,抽真空条件下反应45min;加入0.2份催化剂DMDEE、0.3份抗氧剂1010、0.3份光稳定剂Tinuvin213、0.2份杀菌防霉剂,继续搅拌抽气5min;在通氮气下,以200目滤网过滤出料,密封包装,即得到面料粘合用热熔胶。
粘度测定:使用Brook field粘度计测定胶样在90℃下粘度,选用28#转子,当胶液在设定温度下保持20min后,读取相应粘度数值。
NCO%测定:采用测定NCO的二正丁胺法,甲苯、丙酮为溶解聚氨酯样品的溶剂,乙醇为增容性溶剂,设定空白组,以HCI溶液反向滴定实验组,进行计算NCO%数值。
热熔胶的测定结果:在90℃下粘度为4200cp,NCO%数值为4.26%。
实施例2
所述的服装衬料用聚氨酯热熔胶的配方组成及制备工艺如下:
将16份分子量为2000的聚己二酸己二醇酯二元醇、45份分子量为1200的聚氧化丙烯二醇(PPG)、10份热塑性丙烯酸树脂BR-113,2.5份1,4-丁二醇一并加入反应釜,在150℃熔化3小时;充分混合熔化后,负压脱除水汽,真空度为0.09MPa,抽气时间保持1小时;再降温至75℃,加入35份纯度合格的MDI-50,抽真空条件下反应45min;加入0.4份催化剂DMDEE、0.5份抗氧剂1010、0.4份光稳定剂Tinuvin213、0.2份杀菌防霉剂,继续搅拌抽气5min;在通氮气下,以200目滤网过滤出料,密封包装,即得到面料粘合用热熔胶。
按照实例1所述的测定方法,热熔胶的测定结果:在90℃下粘度为5600cp,NCO%数值为4.32%。
实施例3
所述的服装衬料用聚氨酯热熔胶的配方组成及制备工艺如下:
将25份分子量为1500的聚己二酸乙二醇酯二元醇、40份分子量为1450的聚氧化丙烯二醇(PPG)、1.5份1,4-丁二醇和2份三羟甲基丙烷(TMP)一并加入反应釜,在120℃熔化2.5小时;充分混合熔化后,负压脱除水汽,真空度为0.09MPa,抽气时间保持1小时;再降温至70℃,加入31份纯度合格的MDI-50,抽真空条件下反应30min;加入0.2份催化剂DMDEE、0.2份抗氧剂1010、0.1份光稳定剂Tinuvin213,继续搅拌抽气5min;在通氮气下,以200目滤网过滤出料,密封包装,即得到面料粘合用热熔胶。
按照实例1所述的测定方法,热熔胶的测定结果:在90℃下粘度为7500cp,NCO%数值为3.18%。
实施例4
所述的服装衬料用聚氨酯热熔胶的配方组成及制备工艺如下:
将20份分子量为1500的聚己二酸乙二醇酯二元醇、30份分子量为1000的聚氧化丙烯二醇(PPG)、10份热塑性丙烯酸树脂BR-113,2份三羟甲基丙烷(TMP)一并加入反应釜,在150℃熔化3小时;充分混合熔化后,负压脱除水汽,真空度为0.09MPa,抽气时间保持1小时;再降温至75℃,加入37份纯度合格的MDI-100L,抽真空条件下反应25min;加入0.4份催化剂DMDEE、0.4份抗氧剂1010、0.2份光稳定剂Tinuvin213,继续搅拌抽气5min;在通氮气下,以200目滤网过滤出料,密封包装,即得到面料粘合用热熔胶。
按照实例1所述的测定方法,热熔胶的测定结果:在90℃下粘度为6400cp,NCO%数值为4.67%。

Claims (8)

1.服装衬料用聚氨酯热熔胶,其特征在于,由以下物质按照重量份数组成:
聚酯多元醇 10-30份;
聚醚多元醇 30-50份;
小分子扩链剂 0.5-5份;
功能性树脂 0-15份;
二异氰酸酯 10-25份;
助剂 1-3份;
各组分总和为100;
所述的助剂为催化剂、抗氧剂、光稳定剂、杀菌防霉剂中的一种或几种。
2.根据权利要求1所述的服装衬料用聚氨酯热熔胶,其特征在于,制备方法包括以下过程:
(1)将二异氰酸酯、助剂以外的组分一并加入反应釜,在110-160℃熔化2-4小时;
(2)充分混合熔化后,负压脱除水汽,再降温至60-80℃;
(3)加入二异氰酸酯,抽真空条件下反应20-60min;
(4)加入助剂,通氮气下,过滤出料,密封包装。
3.根据权利要求1或2所述的服装衬料用聚氨酯热熔胶,其特征在于,所述的聚酯多元醇的分子量为1500-2500。
4.根据权利要求1或2所述的服装衬料用聚氨酯热熔胶,其特征在于,所述的聚醚多元醇的分子量为1000-2000。
5.根据权利要求1或2所述的服装衬料用聚氨酯热熔胶,其特征在于,所述的小分子扩链剂为1,4-丁二醇、一缩二乙二醇、三羟甲基丙烷、甘油,或者为二元胺扩链剂。
6.根据权利要求1或2所述的服装衬料用聚氨酯热熔胶,其特征在于,所述的功能性树脂为热塑性丙烯酸酯树脂BR-106、BR-113或者热塑性聚氨酯。
7.根据权利要求1或2所述的服装衬料用聚氨酯热熔胶,其特征在于,所述的二异氰酸酯为甲苯二异氰酸酯、二苯基甲烷二异氰酸酯、Wannate MDI-50、碳化二亚胺改性MDI。
8.根据权利要求1或2所述的服装衬料用聚氨酯热熔胶,其特征在于,所述的催化剂为三亚乙基二胺、双(二甲氨基乙基)醚、2-(2-二甲氨基-乙氧基)乙醇、双(2,2-吗啉乙基)醚;所述的抗氧剂为2,6-二叔丁基对甲苯酚、抗氧剂1010、抗氧剂1135、抗氧剂5057;所述的光稳定剂为紫外吸收剂Tinuvin213、Tinuvin517、UV-327、UV-328;所述的杀菌防霉剂为辛基异噻唑啉酮、2-甲基-4-异噻唑啉-3-酮。
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CN108084952A (zh) * 2017-12-30 2018-05-29 烟台泰盛精化科技有限公司 一种uv压敏/湿气双固化聚氨酯热熔胶的制备方法
CN108084952B (zh) * 2017-12-30 2020-10-02 烟台泰盛精化科技有限公司 一种uv压敏/湿气双固化聚氨酯热熔胶的制备方法
CN108192555A (zh) * 2018-02-12 2018-06-22 中山爵邦时装科技有限公司 一种粘结剂组合物及其在制衣的应用
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CN111440560A (zh) * 2020-04-17 2020-07-24 苏州赛伍应用技术股份有限公司 一种衣用密封压条胶膜及其制备方法和用途
CN115181529A (zh) * 2022-08-01 2022-10-14 普分新材料研究(上海)有限公司 一种适用于服装面料的抗菌型聚氨酯热熔胶及其制备方法
CN115820196A (zh) * 2022-11-30 2023-03-21 康菲胶粘剂技术(广东)有限公司 一种板材封边用聚氨酯热熔胶及其制备方法
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