CN109112829A - 涤纶织物的异味去除方法及应用 - Google Patents
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Abstract
本发明涉及纺织科学技术领域,具体提供了一种涤纶织物的异味去除方法及应用,处理后的涤纶织物从测试气味强度(采用嗅辨法)等级5级(较强气味)提升至2级(稍有感觉),远低于《乘用车内空气质量评价指南》(GB/T 27630‑2011)的限值要求,能满足车企的供货要求,溶剂可循环利用,可推广性强,具有潜在的经济价值。
Description
技术领域
本发明涉及纺织科学技术领域,具体涉及一种织物的以为去除方法,尤其涉及一种涤纶织物的异味去除方法及应用。
背景技术
异味是由于刺激鼻孔内的味觉器官引起的不愉快感觉,对人体健康有着很大的危害。GBl840l—2011《国家纺织产品基本安全技术规范》仍将异味作为纺织服装产品是否合格的重要技术指标之一。
汽车工业中大量使用纺织织物,特别是涤纶面料,广泛应用于汽车座椅、包覆材料、内饰等。当前,我国汽车保有量持续上升,大量汽车停放于户外,在太阳光曝晒下,车内温度高达60-~70度,纺织品释放气味愈发严重。汽车的气味问题影响消费者购车、使用体验,未来涉及到汽车企业的生存,已成为汽车行业多年来的“顽疾”。由此,汽车行业对于上游供应商纺织品生产企业面料的气味释放控制标准也不断提高。关于车用纺织品异味的去除,已由客户需求、汽车生产厂家传递到纺织品生产企业,成为亟待解决的问题。异味的主要来源包括由纺织品上残留的化学整理剂和助剂生成;纺织品在生产、加工、运输、储存、销售过程中容易被微生物污染,以及自身的多孔性易于从环境中吸收异味。
目前,纺织面料异味的去除常用的方法包括吸附、掩盖、催化降解等;然而,上述方法集中于已经释放出的气体的处理,没有从根本上减少纺织面料的异味,而且异味常常具有缓释性,有时长达数年,很难即时去除;针对纺织面料,特别是大量使用的涤纶织物来说,如何在成品出厂之前将异味去除,国内外均尚未见报道。
发明内容
为了解决上述技术问题,本发明提供一种涤纶织物的异味去除方法及应用,处理后的涤纶织物从测试气味强度(采用嗅辨法)等级5级(较强气味)提升至2级(稍有感觉),远低于《乘用车内空气质量评价指南》(GB/T 27630-2011)的限值要求。
为此,本发明的技术方案如下:
第一方面,本发明提供一种涤纶织物的异味去除方法,包括如下步骤:
1)将二甲基亚砜、羟丙基环糊精与无水乙醇混合均匀得到第一混合溶剂,其中,二甲基亚砜的质量分数为12-25%(例如可以是12%、13%、14%、15%、16%、17%、18%、19%、20%、21%、22%、23%、24%、25%及所述范围内的所有取值,由于篇幅的限制不再赘述),羟丙基环糊精的质量分数为4-11%(例如可以是4%、5%、6%、7%、8%、9%、10%、11%及所述范围内的所有取值,由于篇幅的限制不再赘述),其余为无水乙醇;;
2)将涤纶织物置于步骤1)得到的混合溶剂中浸泡,再加入第二混合溶剂,所述第二混合溶剂中含有质量分数为10-20%(例如可以是10%、11%、12%、13%、14%、15%、16%、17%、18%、19%、20%及所述范围内的所有取值范围,由于篇幅的限制在此不再赘述)的纳米二氧化钛和质量分数为10-20%的水杨酸甲酯,余量为去离子水;
3)洗涤,得到去除异味后的涤纶织物。
在本发明的方法中,二甲基亚砜、羟丙基环糊精与无水乙醇混合后能与主要异味产生物含氮化合物、含硫化合物以及醛酮类物质进行反应,去除异味的根源。此外,三者的复配起到了协同增效的效果,明显优于任意单独组分和任意两种组分混合时异味去除的效果,推测可能是发生了化学反应;羟丙基环糊精属于多空腔物质,具有外亲水内疏水的结构,因此能提高异味分子与纳米二氧化钛的接触概率,加快反应过程,增加除异味的效果。纳米二氧化钛能利用光催化降解存留在涤纶织物中的大部分有机物,生成二氧化碳和水,且稳定性高,残留少,不产生二次污染。水杨酸甲酯能增大羟丙基环糊精的支链以及节枝程度,也起到增大与纳米二氧化钛的接触概率的效果。此外,羟丙基环糊精和纳米二氧化钛形成的特殊结构据推测还能起到持续吸附缓释涤纶织物中出来的残余有害气体和异味的效果。
优选地,所述涤纶织物为涤纶短纤维和/或涤纶长丝,优选为涤纶短纤维。
优选地,步骤2)中浸泡的温度为70~90℃,例如可以是70℃、71℃、72℃、73℃、74℃、75℃、76℃、77℃、78℃、79℃、80℃、81℃、82℃、83℃、84℃、85℃、86℃、87℃、88℃、89℃、90℃及所述范围内的所有取值范围,由于篇幅的限制在此不再赘述;
优选地,所述浸泡的时间为5~20min,例如可以是5min、6min、7min、8min、9min、10min、11min、12min、13min、14min、15min、16min、17min、18min、19min、20min及所述范围内的所有取值范围,由于篇幅的限制在此不再赘述。
优选地,步骤3)还包括超声处理和紫外光辐射的步骤。
优选地,步骤3)中,洗涤之前先用无水乙醇冲洗,再用去离子水洗涤;
优选地,步骤3)中,洗涤的温度为52-57℃,例如可以是52℃、52.5℃、53℃、53.5℃、54℃、54.5℃、55℃、55.5℃、56℃、56.5℃、57℃及所述范围内的所有取值范围,由于篇幅的限制在此不再赘述;
优选地,步骤3)中,洗涤的pH为5.8-6.8,例如可以是5.8、5.9、6.0、6.1、6.2、6.3、6.4、6.5、6.6、6.7、6.8及所述范围内的所有取值范围,由于篇幅的限制在此不再赘述;
优选地,步骤3)中,洗涤的时间为5-10h,例如可以是5h、5.5h、6h、6.5h、7h、7.5h、8h、8.5h、9h、9.5h、10h及所述范围内的所有取值范围,由于篇幅的限制在此不再赘述。
优选地,利用超声波处理时,容器加装冷凝回流装置;
优选地,超声处理时,超声波发生器的工作频率为20~40kHz,例如可以是20kHz、21kHz、22kHz、23kHz、24kHz、25kHz、26kHz、27kHz、28kHz、29kHz、30kHz、31kHz、32kHz、33kHz、34kHz、35kHz、36kHz、37kHz、38kHz、39kHz、40kHz及所述范围内的所有取值范围,由于篇幅的限制在此不再赘述;
优选地,超声处理时,容器内液体温度为60~100℃,例如可以是60℃、65℃、70℃、75℃、80℃、85℃、90℃、95℃、100℃及所述范围内的所有取值范围,由于篇幅的限制在此不再赘述;
优选地,超声处理时,处理时间为10~30min,例如可以是10min、12min、14min、16min、18min、20min、22min、24min、26min、28min、30min及所述范围内的所有取值范围,由于篇幅的限制在此不再赘述。
优选地,步骤3)中,所述紫外光辐射的光辐照度0.05~50mw/cm2,例如可以是0.1mw/cm2、0.5mw/cm2、1mw/cm2、5mw/cm2、10mw/cm2、15mw/cm2、20mw/cm2、25mw/cm2、30mw/cm2、35mw/cm2、40mw/cm2、45mw/cm2、50mw/cm2及所述范围内的所有取值范围,由于篇幅的限制在此不再赘述,优选为0.2~10mw/cm2;
优选地,所述紫外光辐射的时间为30~90min,例如可以是30min、35min、40min、45min、50min、55min、60min、65min、70min、75min、80min、85min、90min及所述范围内的所有取值范围,由于篇幅的限制在此不再赘述,优选为40-60min。
优选地,所述的涤纶织物的异味去除方法包括如下步骤:
1)将二甲基亚砜、羟丙基环糊精与无水乙醇混合均匀得到第一混合溶剂,其中二甲基亚砜的质量分数为12-25%,羟丙基环糊精的质量分数为4-11%,其余为无水乙醇;
2)将涤纶织物置于步骤1)得到的混合溶剂中在70~90℃的温度下浸泡5~20min,再加入第二混合溶剂,所述第二混合溶剂中含有质量分数为10-20%的纳米二氧化钛和质量分数为10-20%的水杨酸甲酯,余量为去离子水;
3)先用超声处理,容器加装冷凝回流装置;超声波发生器的工作频率为20~40kHz,容器内液体温度为60~100℃,超声处理时间为10~30min;
4)紫外光辐射,光辐照度0.05~50mw/cm2,时间为30~90min;
5)先用无水乙醇冲洗,再用去离子水洗涤,得到去除异味后的涤纶织物;
洗涤的温度为52-57℃,pH为5.8-6.8,时间为5-10h。
第二方面,本发明提供如第一方面所述的涤纶织物的异味去除方法在去除异味方面的应用。
与现有技术相比,本发明至少具有以下有益效果:
本发明的方法工艺简单,易实现在线处理,可进行工业放大化,即采用适当的混合溶剂将涤纶织物中上游聚合过程中的小分子物质(甲苯、二甲苯、乙醛等VOCs主要来源)成功去除,制得产品可从测试气味强度(采用嗅辨法)等级5级(强烈的刺激气味)提升至2级(稍有气味),远低于《乘用车内空气质量评价指南》(GB/T 27630-2011)的限值要求,使产品能够满足车企的供货(各车企不同,一般限值为甲苯<50ug/m3、二甲苯<20ug/m3、乙醛<50ug/m3)要求,且溶剂可循环回收利用。
具体实施方式
以下结合实施例对本发明的技术方案进行详细描述,以下所有实施例和对比例的涤纶织物均购买自江苏德赛化纤有限公司同一批次的涤纶短纤:优等品,粗细为1.4D,38mm长度,白色,半消光直纺。
实施例1
1)将二甲基亚砜、羟丙基环糊精与无水乙醇混合均匀得到第一混合溶剂,其中所述第一混合溶剂中,二甲基亚砜的质量分数为12%,羟丙基环糊精的质量分数为4%,其余为无水乙醇;
2)将涤纶织物置于步骤1)得到的混合溶剂中在70℃的温度下浸泡5min,再加入第二混合溶剂,所述第二混合溶剂中含有质量分数为10%的纳米二氧化钛和质量分数为10%的水杨酸甲酯,余量为去离子水;
3)先用超声处理,容器加装冷凝回流装置;超声波发生器的工作频率为20kHz,容器内液体温度为60℃,超声处理时间为10min;
4)紫外光辐射,光辐照度0.05mw/cm2,时间为30min;
5)先用无水乙醇冲洗,再用去离子水洗涤,得到去除异味后的涤纶织物;
洗涤的温度为52℃,pH为5.8,时间为5h。
实施例2
1)将二甲基亚砜、羟丙基环糊精与无水乙醇混合均匀得到第一混合溶剂,其中所述第一混合溶剂中,二甲基亚砜的质量分数为25%,羟丙基环糊精的质量分数为11%,其余为无水乙醇;
2)将涤纶织物置于步骤1)得到的混合溶剂中在90℃的温度下浸泡20min,再加入第二混合溶剂,所述第二混合溶剂中含有质量分数为20%的纳米二氧化钛和质量分数为20%的水杨酸甲酯,余量为去离子水;
3)先用超声处理,容器加装冷凝回流装置;超声波发生器的工作频率为40kHz,容器内液体温度为100℃,超声处理时间为30min;
4)紫外光辐射,光辐照度50mw/cm2,时间为90min;
5)先用无水乙醇冲洗,再用去离子水洗涤,得到去除异味后的涤纶织物;
洗涤的温度为57℃,pH为6.8,时间为10h。
实施例3
1)将二甲基亚砜、羟丙基环糊精与无水乙醇混合均匀得到第一混合溶剂,其中所述第一混合溶剂中,二甲基亚砜的质量分数为18%,羟丙基环糊精的质量分数为7.5%,其余为无水乙醇;
2)将涤纶织物置于步骤1)得到的混合溶剂中在80℃的温度下浸泡13min,再加入第二混合溶剂,所述第二混合溶剂中含有质量分数为15%的纳米二氧化钛和质量分数为15%的水杨酸甲酯,余量为去离子水;
3)先用超声处理,容器加装冷凝回流装置;超声波发生器的工作频率为30kHz,容器内液体温度为80℃,超声处理时间为20min;
4)紫外光辐射,光辐照度25mw/cm2,时间为60min;
5)先用无水乙醇冲洗,再用去离子水洗涤,得到去除异味后的涤纶织物;
洗涤的温度为55℃,pH为6.3,时间为7h。
实施例4
1)将二甲基亚砜、羟丙基环糊精与无水乙醇混合均匀得到第一混合溶剂,其中所述第一混合溶剂中,二甲基亚砜的质量分数为15%,羟丙基环糊精的质量分数为10%,其余为无水乙醇;
2)将涤纶织物置于步骤1)得到的混合溶剂中在70~90℃的温度下浸泡5~20min,再加入第二混合溶剂,所述第二混合溶剂中含有质量分数为10-20%的纳米二氧化钛和质量分数为10-20%的水杨酸甲酯,余量为去离子水;
3)先用超声处理,容器加装冷凝回流装置;超声波发生器的工作频率为20~40kHz,容器内液体温度为60~100℃,超声处理时间为10~30min;
4)紫外光辐射,光辐照度0.05~50mw/cm2,时间为30~90min;
5)先用无水乙醇冲洗,再用去离子水洗涤,得到去除异味后的涤纶织物;
洗涤的温度为52-57℃,pH为5.8-6.8,时间为5-10h。
实施例5
1)将二甲基亚砜、羟丙基环糊精与无水乙醇混合均匀得到第一混合溶剂,其中所述第一混合溶剂中,二甲基亚砜的质量分数为20%,羟丙基环糊精的质量分数为6%,其余为无水乙醇;
2)将涤纶织物置于步骤1)得到的混合溶剂中在75℃的温度下浸泡15min,再加入第二混合溶剂,所述第二混合溶剂中含有质量分数为18%的纳米二氧化钛和质量分数为13%的水杨酸甲酯,余量为去离子水;
3)先用超声处理,容器加装冷凝回流装置;超声波发生器的工作频率为25kHz,容器内液体温度为75℃,超声处理时间为20min;
4)紫外光辐射,光辐照度30mw/cm2,时间为50min;
5)先用无水乙醇冲洗,再用去离子水洗涤,得到去除异味后的涤纶织物;
洗涤的温度为55℃,pH为6.0,时间为7h。
对比例1
除二甲基亚砜的质量分数为5%,其余与实施例1相同。
对比例2
除二甲基亚砜的质量分数为50%,其余与实施例1相同。
对比例3
除羟丙基环糊精的质量分数为1%,其余与实施例1相同。
对比例4
除羟丙基环糊精的质量分数为20%,其余与实施例1相同。
对比例5
除纳米二氧化钛的质量分数为5%,其余与实施例1相同。
对比例6
除纳米二氧化钛的质量分数为45%,其余与实施例1相同。
对比例7
除水杨酸甲酯的质量分数为3%,其余与实施例1相同。
对比例8
除水杨酸甲酯的质量分数为30%,其余与实施例1相同。
实施例6各项测试
气味测试:
在本发明中,气味测试采用气味测试方法,试验标准为VW50180,评判等级为6级,分别为1:无异味,2:稍有气味,3:有味道但不刺激,4:有刺激气味,5:强烈的刺激气味,6:无法忍受的味道。对于汽车零部件的气味等级N≤3为合格。
嗅辨小组共由6名成员构成,其中3人为专业嗅辨人员,其余3人为非专业人员。
分别取实施例1-5和对比例1-8处理后的涤纶织物,裁剪成10cm×10cm的规格,放入一个无气味的密封瓶中,随后将密封瓶于80℃条件下加热2h,随即开始测定,让6位嗅辨小组成员分别对同一实施例或对比例的样品进行评定分级,分别去掉最高分和最低分,取算术平均值得到该实施例或对比例的气味等级N:
N=(∑Ni-Nmax-Nmin)
所得结果如表1所示,从表1可以看出,实施例1-5的方法处理后的涤纶面料从5级(强烈的刺激气味)提升至2级(稍有气味),远低于《乘用车内空气质量评价指南》(GB/T27630-2011)的限值要求(N≤3);而对比例1-8的效果普遍不如实施例1-5,说明本发明的方法中的配比起到了较好的效果,明显优于其他配比的实施方式。
表1
有机物浓度测试:
将实施例1-5和对比例1-8处理后的涤纶面料制成同一车型的汽车座椅(包括驾驶员座位在内,一共5个座位),汽车出厂时的内饰状态无改变、出厂与检测的间隔时间相等。随后检测车内空气中有机物的浓度,具体方法按照HJ/T400-2007的规定进行,受检车辆处于静止状态,车辆门、窗和乘员舱进风口风门均处于关闭状态,发动机和空调等设备不工作。对车内空气中有机物的浓度进行测试,具体结果如表2所示,对照组为不加入汽车座椅时车内的空气有机物浓度。从表2可以看出,实施例1-5对于各种有机物浓度的去除效果明显,与对照组相比有明显下降;对比例1-8的有机物去除效果明显不如实施例1-5,说明本发明的方法对于去除有机物,尤其是有刺激性气味的有机物去除效果较好,使经本发明的方法处理后的涤纶织物能够满足车企的供货要求(各车企不同,一般限值为甲苯<50ug/m3、二甲苯<20ug/m3、乙醛<50ug/m3)。
表2
面料耐磨性测试:
对于汽车用面料,优良且适宜的材料应该是结构稳定、耐磨、耐水洗类型的,因此对实施例1-5和对比例1-8处理的涤纶面料进行了耐磨性测试,具体测试项目和结果如表3所示,其中,抗起毛起球性能的测定及等级划分按照GB/T4802.2-2008马丁代尔法进行。从表3的测试结果可以看出,实施例1-5的顶破强力稍高于对比例1-8,但实施例1-5的摩擦系数和扛起毛起球性能明显高于对比例1-8,说明本发明的方法制备的涤纶面料耐磨性佳,适合用于汽车座椅等车用耗材。
表3
应该注意到并理解,在不脱离后附的权利要求所要求的本发明的精神和范围的情况下,能够对上述详细描述的本发明做出各种修改和改进。因此,要求保护的技术方案的范围不受所给出的任何特定示范教导的限制。
申请人声明,以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明,不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干简单推演或替换,都应当视为属于本发明的保护范围。
Claims (9)
1.一种涤纶织物的异味去除方法,其特征在于,包括如下步骤:
1)将二甲基亚砜、羟丙基环糊精与无水乙醇混合均匀得到第一混合溶剂,其中,二甲基亚砜的质量分数为12-25%,羟丙基环糊精的质量分数为4-11%,其余为无水乙醇;
2)将涤纶织物置于步骤1)得到的混合溶剂中浸泡,再加入第二混合溶剂,所述第二混合溶剂中含有质量分数为10-20%的纳米二氧化钛和质量分数为10-20%的水杨酸甲酯,余量为去离子水;
3)洗涤,得到去除异味后的涤纶织物。
2.如权利要求1所述的涤纶织物的异味去除方法,其特征在于,所述涤纶织物为涤纶短纤维和/或涤纶长丝,优选为涤纶短纤维。
3.如权利要求1或2所述的涤纶织物的异味去除方法,其特征在于,步骤2)中浸泡的温度为70~90℃;
优选地,所述浸泡的时间为5~20min。
4.如权利要求1-3中任一项所述的涤纶织物的异味去除方法,其特征在于,步骤3)还包括超声处理和紫外光辐射的步骤。
5.如权利要求1-4中任一项所述的涤纶织物的异味去除方法,其特征在于,步骤3)中,洗涤之前先用无水乙醇冲洗,再用去离子水洗涤;
优选地,步骤3)中,洗涤的温度为52-57℃;
优选地,步骤3)中,洗涤的pH为5.8-6.8;
优选地,步骤3)中,洗涤的时间为5-10h。
6.如权利要求4或5所述的涤纶织物的异味去除方法,其特征在于,利用超声波处理时,容器加装冷凝回流装置;
优选地,超声处理时,超声波发生器的工作频率为20~40kHz;
优选地,超声处理时,容器内液体温度为60~100℃;
优选地,超声处理时,处理时间为10~30min。
7.如权利要求4-6中任一项所述的涤纶织物的异味去除方法,其特征在于,步骤3)中,所述紫外光辐射的光辐照度0.05~50mw/cm2,优选为0.2~10mw/cm2;
优选地,所述紫外光辐射的时间为30~90min,优选为40-60min。
8.如权利要求1-7中任一项所述的涤纶织物的异味去除方法,其特征在于,包括如下步骤:
1)将二甲基亚砜、羟丙基环糊精与无水乙醇混合均匀得到第一混合溶剂,其中所述第一混合溶剂中,二甲基亚砜的质量分数为12-25%,羟丙基环糊精的质量分数为4-11%,其余为无水乙醇;
2)将涤纶织物置于步骤1)得到的混合溶剂中在70~90℃的温度下浸泡5~20min,再加入第二混合溶剂,所述第二混合溶剂中含有质量分数为10-20%的纳米二氧化钛和质量分数为10-20%的水杨酸甲酯,余量为去离子水;
3)先用超声处理,容器加装冷凝回流装置;超声波发生器的工作频率为20~40kHz,容器内液体温度为60~100℃,超声处理时间为10~30min;
4)紫外光辐射,光辐照度0.05~50mw/cm2,时间为30~90min;
5)先用无水乙醇冲洗,再用去离子水洗涤,得到去除异味后的涤纶织物;
洗涤的温度为52-57℃,pH为5.8-6.8,时间为5-10h。
9.根据权利要求1-8中任一项所述的涤纶织物的异味去除方法在去除异味方面的应用。
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CN107694319A (zh) * | 2017-09-18 | 2018-02-16 | 佛山市启振环保科技有限公司 | 一种空气异味去除剂及其制备方法 |
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