CN116531181B - 一种五层叠层结构复合纤维芯体及其制作方法 - Google Patents
一种五层叠层结构复合纤维芯体及其制作方法 Download PDFInfo
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- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 76
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- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 18
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- IFDLXKQSUOWIBO-UHFFFAOYSA-N 1,3-dichloropropan-1-ol Chemical compound OC(Cl)CCCl IFDLXKQSUOWIBO-UHFFFAOYSA-N 0.000 claims abstract description 12
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Abstract
本发明公开了一种五层叠层结构复合纤维芯体,包括功能性无纺布层由功能性复合纤维芯制备得到的;功能性复合纤维芯的制备方法包括以下步骤:将聚丙烯纤维和碳纤维混合,得到复合纤维芯;将得到的复合纤维芯置于丙酮溶液中浸泡处理,得到预处理复合纤维芯;将预处理复合纤维芯置于浓硝酸溶液酸化处理,得到酸化复合纤维芯;将硬脂酸与羟乙基乙二胺,在浓硫酸催化剂下,反应得到中间体1;将酸化复合纤维芯加入到1,3‑二氯丙醇,反应得到中间体2;将中间体1‑丙酮溶液和中间体1‑丙酮溶液,在温度50‑55℃条件下,反应得到功能性复合纤维芯,本发明由功能性复合纤维芯制备得到的尿不湿具有着除味、抗菌、柔软等性能优点。
Description
技术领域
本发明涉及纸尿裤技术领域,具体涉及一种五层叠层结构复合纤维芯体及其制作方法。
背景技术
纸尿裤的核心关键技术是“芯体”;纸尿裤是一次性使用后即可抛弃的产品。以无纺布、卫生纸、绒毛浆、高分子吸水树脂、PE膜、橡皮筋等材料制成;
其中,中国专利CN113116638A公开了一种透湿气柔软型复合芯体及其制备方法,其通过静电植绒方法得到含绒无纺布,再高吸水树脂均匀散布在纤维绒毛上,得到复合芯体;
而针对上述公开的复合芯体,其利用高吸水树脂有足够的空间产生溶胀,提高复合芯体中高吸水树脂的利用率;但是针对复合纤维芯体满足高吸收性能时,其树脂在吸收尿液时,由于尿液中含有很多有机物、无机物和水分,并且佩戴身体的环境温度下,使得易滋生细菌,造成婴儿皮肤出现感染的问题;以及,其复合芯体使用到的无纺布,表面含有较多绒毛,使得在佩戴过程中,婴儿会产生痒的感觉,影响到使用时的舒适性;
综上,现有纸尿裤制备用的复合纤维芯体,其在抗菌和柔软方面表现不够好,其中抗菌性能差,使得在婴儿身体上滋生细菌,影响其健康,柔软性能差,使得对婴儿皮肤有磨损,舒适度比较差的问题。
发明内容
本发明的目的就在于解决上述背景技术的问题,而提出一种五层叠层结构复合纤维芯体及其制作方法。
本发明的目的可以通过以下技术方案实现:
一种五层叠层结构复合纤维芯体,包括依次设置的上覆盖层、上层高分子层、功能性无纺布层、下层高分子层和下覆盖层,功能性无纺布层是由功能性复合纤维芯制备得到的;
功能性复合纤维芯的制备方法包括以下步骤:
步骤1:将聚丙烯纤维和碳纤维混合,得到复合纤维芯;将得到的复合纤维芯置于丙酮溶液中浸泡处理,得到预处理复合纤维芯;
步骤2:将预处理复合纤维芯置于浓硝酸溶液酸化处理,得到酸化复合纤维芯;
步骤3:将硬脂酸与羟乙基乙二胺,在浓硫酸催化剂下,反应得到中间体1;
步骤4:将酸化复合纤维芯加入到1,3-二氯丙醇,反应得到中间体2;
步骤5:将中间体1-丙酮溶液和中间体2-丙酮溶液,在温度50-55℃条件下,反应得到功能性复合纤维芯。
作为本发明进一步的方案:复合纤维芯与丙酮的质量比为10-20g:500-800g。
作为本发明进一步的方案:控制预处理复合纤维芯与浓硝酸溶液的质量比为1-3g:10-30g。
作为本发明进一步的方案:控制硬脂酸、羟乙基乙二胺和浓硫酸的用量比为1-1.2mo l:1-1.4mo l:0.01-0.04mo l。
作为本发明进一步的方案:在步骤4中控制酸化复合纤维芯、1,3-二氯丙醇和丙酮的用量比为1-1.2mo l:1-1.4mo l:1-2L。
作为本发明进一步的方案:控制中间体1、中间体2的用量比为1-1.2mo l:2-2.4mol。
作为本发明进一步的方案:功能性复合纤维芯用高速混合机混合,控制转速为800-1000rmp,通过螺杆挤压熔融,控制熔融温度为110-129℃,然后过滤、计量、纺丝、牵伸、成网、热轧成布、卷绕、分切、包装,得到功能性无纺布层。
一种五层叠层结构复合纤维芯体的制作方法,包括以下步骤:
将由功能性复合纤维芯制备得到的功能性无纺布层,按照从上往下的顺序依次将上覆盖层、上层高分子层、功能性无纺布层、下层高分子层和下覆盖层粘结,得到五层叠层结构复合纤维芯体。
本发明的有益效果:
本发明通过聚丙烯纤维和碳纤维作为复合纤维芯体的基料,利用聚丙烯纤维强度高、弹性好、耐磨等性能,碳纤维具有较好的吸附性能,降低异味的散发;
本发明功能性复合纤维芯通过硬脂酸、羟乙基乙二胺先酯化反应,再酰基与胺基成环得到中间体1,再利用酸化含有羧酸的纤维与1,3-二氯丙醇发生酯化反应,得到中间体2,再通过中间体1与中间体2反应,得到具有3个羟基和2个阳离子基团(季铵盐)的纤维材料,使其具有很好的抗菌性能和柔软性能,从而由功能性复合纤维芯制备得到的尿不湿具有着除味、抗菌、柔软等性能优点。
具体实施方式
下面将结合本发明实施例中,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
实施例1
本发明为一种五层叠层结构复合纤维芯体及其制作方法,
包括依次设置的上覆盖层、上层高分子层、功能性无纺布层、下层高分子层和下覆盖层;
其中,上覆盖层、上层高分子层、功能性无纺布层、下层高分子层和下覆盖层相互层叠设置,并粘结而成的;
功能性无纺布层的制备方法包括以下步骤:
步骤1:将聚丙烯纤维和碳纤维混合,得到复合纤维芯;将得到的复合纤维芯,常温下置于丙酮溶液中浸泡15-17h,超声2-4h后,取出,用去离子水洗涤3次后,50℃下干燥至恒重,得到预处理复合纤维芯;
其中,复合纤维芯与丙酮的质量比为10g:500g;
步骤2:将预处理复合纤维芯置于浓硝酸溶液中超声40-60min后,升温至50-55℃搅拌反应3h,然后加入去离子水洗涤,抽滤,滤饼用去离子水洗涤至洗涤液呈中性,再于80℃下干燥至恒重,得到酸化复合纤维芯;
其中,控制预处理复合纤维芯与浓硝酸溶液的质量比为1g:10g;
步骤3:将硬脂酸升温至80℃使之熔融,并向其滴加羟乙基乙二胺,控制滴加时间为2-5min,滴加过程中不断放热,温度上升,加入浓硫酸催化剂,缓慢升温至150℃反应4h,升温至240℃保温5h,降温至室温,得到中间体1;
其中,控制硬脂酸、羟乙基乙二胺和浓硫酸的用量比为1mo l:1mo l:0.01mo l;
步骤4:将酸化复合纤维芯加入到丙酮溶剂中混合后,加入1,3-二氯丙醇,升温至70-80℃后,加入浓硫酸催化剂,缓慢升温至160℃反应2h,升温至220℃保温4h,降温至室温,得到中间体2;
其中,控制酸化复合纤维芯、1,3-二氯丙醇和丙酮的用量比为1mo l:1mo l:1L;
步骤5:将得到的中间体1加入到丙酮溶剂中溶解,得到质量分数5%的中间体1-丙酮溶液,得到的中间体2加入到丙酮溶剂中溶解,得到质量分数5%的中间体2-丙酮溶液,将中间体1-丙酮溶液和中间体2-丙酮溶液在温度50-55℃条件下,搅拌3h,得到功能性复合纤维芯;
其中,控制中间体1、中间体2的用量比为1mo l:2mo l;
步骤6:功能性复合纤维芯用高速混合机混合,控制转速为800-1000rmp,通过螺杆挤压熔融,控制熔融温度为110-129℃,然后过滤、计量、纺丝、牵伸、成网、热轧成布、卷绕、分切、包装,得到功能性无纺布层。
实施例2
本发明为一种五层叠层结构复合纤维芯体及其制作方法,
包括依次设置的上覆盖层、上层高分子层、功能性无纺布层、下层高分子层和下覆盖层;
其中,上覆盖层、上层高分子层、功能性无纺布层、下层高分子层和下覆盖层相互层叠设置,并粘结而成的;
功能性无纺布层的制备方法包括以下步骤:
步骤1:将聚丙烯纤维和碳纤维混合,得到复合纤维芯;将得到的复合纤维芯,常温下置于丙酮溶液中浸泡15-17h,超声2-4h后,取出,用去离子水洗涤3次后,50℃下干燥至恒重,得到预处理复合纤维芯;
其中,复合纤维芯与丙酮的质量比为15g:650g;
步骤2:将预处理复合纤维芯置于浓硝酸溶液中超声40-60min后,升温至50-55℃搅拌反应3h,然后加入去离子水洗涤,抽滤,滤饼用去离子水洗涤至洗涤液呈中性,再于80℃下干燥至恒重,得到酸化复合纤维芯;
其中,控制预处理复合纤维芯与浓硝酸溶液的质量比为2g:20g;
步骤3:将硬脂酸升温至80℃使之熔融,并向其滴加羟乙基乙二胺,控制滴加时间为2-5min,滴加过程中不断放热,温度上升,加入浓硫酸催化剂,缓慢升温至150℃反应4h,升温至240℃保温5h,降温至室温,得到中间体1;
其中,控制硬脂酸、羟乙基乙二胺和浓硫酸的用量比为1.1mo l:1.2mo l:0.012mol;
步骤4:将酸化复合纤维芯加入到丙酮溶剂中混合后,加入1,3-二氯丙醇,升温至70-80℃后,加入浓硫酸催化剂,缓慢升温至160℃反应2h,升温至220℃保温4h,降温至室温,得到中间体2;
其中,控制酸化复合纤维芯、1,3-二氯丙醇和丙酮的用量比为1.1mo l:1.2mo l:1.5L;
步骤5:将得到的中间体1加入到丙酮溶剂中溶解,得到质量分数5%的中间体1-丙酮溶液,得到的中间体2加入到丙酮溶剂中溶解,得到质量分数5%的中间体2-丙酮溶液,将中间体1-丙酮溶液和中间体2-丙酮溶液在温度50-55℃条件下,搅拌3h,得到功能性复合纤维芯;
其中,控制中间体1、中间体2的用量比为1.1mo l:2.2mo l;
步骤6:功能性复合纤维芯用高速混合机混合,控制转速为800-1000rmp,通过螺杆挤压熔融,控制熔融温度为110-129℃,然后过滤、计量、纺丝、牵伸、成网、热轧成布、卷绕、分切、包装,得到功能性无纺布层。
实施例3
本发明为一种五层叠层结构复合纤维芯体及其制作方法,
包括依次设置的上覆盖层、上层高分子层、功能性无纺布层、下层高分子层和下覆盖层;
其中,上覆盖层、上层高分子层、功能性无纺布层、下层高分子层和下覆盖层相互层叠设置,并粘结而成的;
功能性无纺布层的制备方法包括以下步骤:
步骤1:将聚丙烯纤维和碳纤维混合,得到复合纤维芯;将得到的复合纤维芯,常温下置于丙酮溶液中浸泡15-17h,超声2-4h后,取出,用去离子水洗涤3次后,50℃下干燥至恒重,得到预处理复合纤维芯;
其中,复合纤维芯与丙酮的质量比为20g:800g;
步骤2:将预处理复合纤维芯置于浓硝酸溶液中超声40-60min后,升温至50-55℃搅拌反应3h,然后加入去离子水洗涤,抽滤,滤饼用去离子水洗涤至洗涤液呈中性,再于80℃下干燥至恒重,得到酸化复合纤维芯;
其中,控制预处理复合纤维芯与浓硝酸溶液的质量比为3g:30g;
步骤3:将硬脂酸升温至80℃使之熔融,并向其滴加羟乙基乙二胺,控制滴加时间为2-5min,滴加过程中不断放热,温度上升,加入浓硫酸催化剂,缓慢升温至150℃反应4h,升温至240℃保温5h,降温至室温,得到中间体1;
其中,控制硬脂酸、羟乙基乙二胺和浓硫酸的用量比为1.2mo l:1.4mo l:0.04mol;
步骤4:将酸化复合纤维芯加入到丙酮溶剂中混合后,加入1,3-二氯丙醇,升温至70-80℃后,加入浓硫酸催化剂,缓慢升温至160℃反应2h,升温至220℃保温4h,降温至室温,得到中间体2;
其中,控制酸化复合纤维芯、1,3-二氯丙醇和丙酮的用量比为1.2mo l:1.4mo l:2L;
步骤5:将得到的中间体1加入到丙酮溶剂中溶解,得到质量分数5%的中间体1-丙酮溶液,得到的中间体2加入到丙酮溶剂中溶解,得到质量分数5%的中间体2-丙酮溶液,将中间体1-丙酮溶液和中间体2-丙酮溶液在温度50-55℃条件下,搅拌3h,得到功能性复合纤维芯;
其中,控制中间体1、中间体2的用量比为1.2mo l:2.4mo l;
步骤6:功能性复合纤维芯用高速混合机混合,控制转速为800-1000rmp,通过螺杆挤压熔融,控制熔融温度为110-129℃,然后过滤、计量、纺丝、牵伸、成网、热轧成布、卷绕、分切、包装,得到功能性无纺布层。
对比例1
对比例1采用中国专利号CN210096101 U为的高蓬松无纺布层;
性能测试:参照GB/T20944.3-2008振荡法对实施例1-3功的功能性无纺布和对比例1的高蓬松无纺布层进行金黄色葡萄球菌和大肠杆菌进行抑菌性能测试;对实施例1-3的功能性无纺布和对比例1的高蓬松无纺布进行表面摩擦系数测试,测试结果见下表;
由上述表格可以,本发明由功能性复合纤维芯制备得到的无纺布具有很好的抗菌性能和其表面更加光滑柔软。
以上对本发明的一个实施例进行了详细说明,但所述内容仅为本发明的较佳实施例,不能被认为用于限定本发明的实施范围。凡依本发明申请范围所作的均等变化与改进等,均应仍归属于本发明的专利涵盖范围之内。
Claims (8)
1.一种五层叠层结构复合纤维芯体,包括依次设置的上覆盖层、上层高分子层、功能性无纺布层、下层高分子层和下覆盖层,其特征在于,功能性无纺布层是由功能性复合纤维芯制备得到的;
功能性复合纤维芯的制备方法包括以下步骤:
步骤1:将聚丙烯纤维和碳纤维混合,得到复合纤维芯;将得到的复合纤维芯置于丙酮溶液中浸泡处理,得到预处理复合纤维芯;
步骤2:将预处理复合纤维芯置于浓硝酸溶液酸化处理,得到酸化复合纤维芯;
步骤3:将硬脂酸与羟乙基乙二胺,在浓硫酸催化剂下,反应得到中间体1;
步骤4:将酸化复合纤维芯加入到丙酮溶剂中混合后,加入1,3-二氯丙醇,升温至70-80℃后,加入浓硫酸催化剂,缓慢升温至160℃反应2h,升温至220℃保温4h,降温至室温,得到中间体2;
步骤5:将得到的中间体1加入到丙酮溶剂中溶解,得到质量分数5%的中间体1-丙酮溶液,得到的中间体2加入到丙酮溶剂中溶解,得到质量分数5%的中间体2-丙酮溶液,将中间体1-丙酮溶液和中间体2-丙酮溶液在温度50-55℃条件下,搅拌3h,反应得到功能性复合纤维芯。
2.根据权利要求1所述的一种五层叠层结构复合纤维芯体,其特征在于,在步骤1中复合纤维芯与丙酮的质量比为10-20g:500-800g。
3.根据权利要求1所述的一种五层叠层结构复合纤维芯体,其特征在于,控制预处理复合纤维芯与浓硝酸溶液的质量比为1-3g:10-30g。
4.根据权利要求1所述的一种五层叠层结构复合纤维芯体,其特征在于,控制硬脂酸、羟乙基乙二胺和浓硫酸的用量比为1-1.2mol:1-1.4mol:0.01-0.04mol。
5.根据权利要求1所述的一种五层叠层结构复合纤维芯体,其特征在于,在步骤4中控制酸化复合纤维芯、1,3-二氯丙醇和丙酮的用量比为1-1.2mol:1-1.4mol:1-2L。
6.根据权利要求1所述的一种五层叠层结构复合纤维芯体,其特征在于,控制中间体1、中间体2的用量比为1-1.2mol:2-2.4mol。
7.根据权利要求1所述的一种五层叠层结构复合纤维芯体,其特征在于,功能性复合纤维芯用高速混合机混合,控制转速为800-1000rmp,通过螺杆挤压熔融,控制熔融温度为110-129℃,然后过滤、计量、纺丝、牵伸、成网、热轧成布、卷绕、分切、包装,得到功能性无纺布层。
8.一种根据权利要求1-7任一项所述的五层叠层结构复合纤维芯体的制作方法,其特征在于,包括以下步骤:
由功能性复合纤维芯制备得到功能性无纺布层,按照从上往下的顺序依次将上覆盖层、上层高分子层、功能性无纺布层、下层高分子层和下覆盖层粘结,得到五层叠层结构复合纤维芯体。
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