CN107142728B - 一种表面疏水的感温变色面料的制备方法 - Google Patents
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Abstract
本发明公开了一种表面疏水的感温变色面料的制备方法,可以形成一种功能面料,该面料由普通聚酯面料后整理而得到。预先制备得到由疏水热塑性聚合物与感温变色纳米粉体复合的超细微粒,将超微粒子负载在面料表面后,在面料表面形成类似于荷叶结构的微观结构,具备优异的疏水性。同时超微粒子内含有感温变色纳米粉体,可以根据人体表温度的变化实现颜色的改变。
Description
技术领域
本发明涉及功能性面料技术领域,尤其是一种表面疏水的感温变色面料的制备方法。
背景技术
随着社会科学和经济水平的提高、审美观念的改变,人们对服装已经突破了传统的舒适耐用的需求,这就要求服装材料有时代感、科学性、创造性。因此,在新的时代开发出新型的智能响应性服用新材料具有重要的战略地位和行业推动作用。
智能变色面料可以根据外界环境的变化而发生颜色的改变,起到对外界环境智能响应作用,可以使服装由“静态”变为“动态”。热敏变色材料在受热或冷却时可见吸收光谱发生变化的性质而开发的一种功能纤维,在军事伪装,医用示温等领域有重要应用,特别应用在高温警示时,与体温计、红外测温仪等相比,热致变色纤维制品有明显的优势,热致变色材料对温度的响应灵敏,其纤维制品方便携带,成本低廉,可直观监测温度的变化,因此热致变色纤维制品在需要高温警示的机器、床上用品(如电热毯等)、车用内饰等场合具有巨大的开发潜力。
发明内容
本发明的目的在于克服现有技术中的缺陷,提供一种表面疏水的感温变色面料的制备方法。
为了实现上述目的,本发明提供的一种表面疏水的感温变色面料的制备方法,包括以下步骤:
(1)、通过纺丝法制备得到感温变色纳米粉体和疏水性聚合物复合的超细纤维;
(2)、将步骤(1)所述的超细纤维通过高速剪切分散得到悬浊液,所述悬浊液含有感温变色纳米粉体和疏水性聚合物复合的超微粒子;
(3)、将步骤(2)所述的悬浊液中加入聚合单体、羧甲基纤维素钠与自由基聚合引发剂构成功能性后整理液,所述的聚合单体为乙二醇二甲基丙烯酸酯、甲基丙烯酸、甲基丙烯酸甲酯;
(4)、将步骤(3)所述的功能性后整理液刮涂在普通面料表面,然后经烘焙即可得到表面疏水的感温变色面料。
优选的,步骤(4)所述烘焙的温度130-150℃,烘焙的时间5-8 min;烘焙完成后,面料克重增加量在9-12 g/㎡。
优选的,步骤(3)所述聚合单体的添加总量占功能性后整理液总质量的35~40%,所述乙二醇二甲基丙烯酸酯占聚合单体总质量的3~8%。
优选的,步骤(3)所述自由基聚合引发剂含量为聚合单体总质量的0.8~1%。
优选的,步骤(3)所述羧甲基纤维素钠的添加量为功能性后整理液总质量的0.3~0.5%。
优选的,步骤(1)所述超细纤维的直径为300~700nm。
优选的,所述超微粒子占功能性后整理液总质量的30~40%。
优选的,步骤(2)所述高速剪切分散的转速高于1000rmp/min,时间大于50min。
本发明的有益效果:
1、本发明设计一种表面疏水的感温变色面料的制备方法,可以形成一种功能面料,该面料由普通聚酯面料后整理而得到。预先制备得到由疏水热塑性聚合物与感温变色纳米粉体复合的超细微粒,将超微粒子负载在面料表面后,在面料表面形成类似于荷叶结构的微观结构,具备优异的疏水性。同时超微粒子内含有感温变色纳米粉体,可以根据人体表温度的变化实现颜色的改变。本发明通过加入聚合单体为乙二醇二甲基丙烯酸酯、甲基丙烯酸、甲基丙烯酸甲酯,在这三者的共同作用下可以形成三维网络状交联,使超微粒子稳定的粘附在面料表面。具备有耐洗涤性和长期使用的稳定性。
2、自由基聚合引发剂在加热条件下产生自由基,引发乙二醇二甲基丙烯酸酯、甲基丙烯酸和甲基丙烯酸甲酯的原位聚合物起到粘合剂的作用,使超微粒子高效的粘附在面料表面。
3、甲基丙烯酸甲酯透明度较高,使颜色改变更容易被观察。
4、聚合单体占功能性后整理液总质量的35-40%,且乙二醇二甲基丙烯酸酯占聚合物单体总量的3-8%。过高的聚合单体浓度和乙二醇二甲基丙烯酸酯含量,会使后整理后的面料变硬,影响手感;而过低的单体浓度和交联剂含量,会降低粘合牢固度。
5、自由基聚合引发剂含量为聚合单体总质量的0.8~1%,该范围内得到的粘合剂能兼顾粘合牢度和手感。
6、羧甲基纤维素钠的添加量为功能性后整理液总质量的0.3~0.5%,过高的浓度会使体系粘度变的很大而不利于各组分的均匀混合,也会后续工序带来困难;过低的浓度体系粘度较低使超细微粒子有逐渐聚沉的倾向,易使后期加工过程中感温变色微粒子在面料表面分布不均匀。
7、烘焙温度较低或者时间较短会使聚合不完全,不利于超微粒子在面料表面的负载;温度较高和时间过长,会对面料的强度有一定的影响,并且会损害感温变色纳米粉体的感温变色能力。
8、步骤(1)所述超细纤维的直径为300~700nm,当直径超过700 nm将会使疏水效果降低,同时影响感温变色能力,而低于300 nm将会大大提高生产成本,而相应的疏水效果与感温变色能力却没有得到提升。
具体实施方式
以下对本发明的实施方式作详细说明。应该强调的是,下述说明仅仅是示例性的,而不是为了限制本发明的范围及其应用。
实施例1:
一种表面疏水的感温变色面料的制备方法,包括以下步骤:
(1)、通过纺丝法制备得到感温变色纳米粉体和疏水性聚合物复合的超细纤维,超细纤维的直径为300nm;
(2)、将步骤(1)所述的超细纤维通过高速剪切分散得到悬浊液,所述悬浊液含有感温变色纳米粉体和疏水性聚合物复合的超微粒子,高速剪切分散的转速高于1000rmp/min,时间大于50min;
(3)、将步骤(2)所述的悬浊液中加入聚合单体、羧甲基纤维素钠与自由基聚合引发剂构成功能性后整理液,所述的聚合单体为乙二醇二甲基丙烯酸酯、甲基丙烯酸、甲基丙烯酸甲酯,聚合单体的添加总量占功能性后整理液总质量的35%,所述乙二醇二甲基丙烯酸酯占聚合单体总质量的3%,自由基聚合引发剂含量为聚合单体总质量的0.9%,羧甲基纤维素钠的添加量为功能性后整理液总质量的0.5%,所述超微粒子占功能性后整理液总质量的30%;
(4)、将步骤(3)所述的功能性后整理液刮涂在普通面料表面,然后经烘焙即可得到表面疏水的感温变色面料,烘焙的温度150℃,烘焙的时间5 min;烘焙完成后,面料克重增加量在9-12 g/㎡。
实施例2:
一种表面疏水的感温变色面料的制备方法,包括以下步骤:
(1)、通过纺丝法制备得到感温变色纳米粉体和疏水性聚合物复合的超细纤维,超细纤维的直径为700nm;
(2)、将步骤(1)所述的超细纤维通过高速剪切分散得到悬浊液,所述悬浊液含有感温变色纳米粉体和疏水性聚合物复合的超微粒子,高速剪切分散的转速高于1000rmp/min,时间大于50min;
(3)、将步骤(2)所述的悬浊液中加入聚合单体、羧甲基纤维素钠与自由基聚合引发剂构成功能性后整理液,所述的聚合单体为乙二醇二甲基丙烯酸酯、甲基丙烯酸、甲基丙烯酸甲酯,聚合单体的添加总量占功能性后整理液总质量的40%,所述乙二醇二甲基丙烯酸酯占聚合单体总质量的8%,自由基聚合引发剂含量为聚合单体总质量的0.8%,羧甲基纤维素钠的添加量为功能性后整理液总质量的0.3%,所述超微粒子占功能性后整理液总质量的40%;
(4)、将步骤(3)所述的功能性后整理液刮涂在普通面料表面,然后经烘焙即可得到表面疏水的感温变色面料,烘焙的温度130℃,烘焙的时间8 min;烘焙完成后,面料克重增加量在9-12 g/㎡。
实施例3:
一种表面疏水的感温变色面料的制备方法,包括以下步骤:
(1)、通过纺丝法制备得到感温变色纳米粉体和疏水性聚合物复合的超细纤维,超细纤维的直径为500nm;
(2)、将步骤(1)所述的超细纤维通过高速剪切分散得到悬浊液,所述悬浊液含有感温变色纳米粉体和疏水性聚合物复合的超微粒子,高速剪切分散的转速高于1000rmp/min,时间大于50min;
(3)、将步骤(2)所述的悬浊液中加入聚合单体、羧甲基纤维素钠与自由基聚合引发剂构成功能性后整理液,所述的聚合单体为乙二醇二甲基丙烯酸酯、甲基丙烯酸、甲基丙烯酸甲酯,聚合单体的添加总量占功能性后整理液总质量的37.5%,所述乙二醇二甲基丙烯酸酯占聚合单体总质量的5.5%,自由基聚合引发剂含量为聚合单体总质量的1%,羧甲基纤维素钠的添加量为功能性后整理液总质量的0.4%,所述超微粒子占功能性后整理液总质量的35%;
(4)、将步骤(3)所述的功能性后整理液刮涂在普通面料表面,然后经烘焙即可得到表面疏水的感温变色面料,烘焙的温度140℃,烘焙的时间6.5 min;烘焙完成后,面料克重增加量在9-12 g/㎡。
功能性结果测试:
对上述实施例1~3方法制得的表面疏水的感温变色面料、将实施例1~3方法制得的表面疏水的感温变色面料水洗20次后、以及普通面料进行空白对照,进行疏水功能与感温变色功能测试,如表1所示。
所述疏水功能测试为将面料倾斜角度为30放置,然后采用水对面料表面喷淋1分钟,最后测量面料克重增加量。
所述感温变色功能测试为将面料分别放置在常温与室温为40度进行颜色变化对比的观察。
表1本发明一种表面疏水的感温变色面料的功能测试结果
由表1可以看出,本发明的一种表面疏水的感温变色面料具备有优秀的疏水性能与感温变色效果,且本发明具备的该效果具有稳定性与耐洗涤性,即使经过水洗处理20次后,也不对该功能效果产生影响。
最后应说明的是:显然,上述实施例仅仅是为清楚地说明本发明所作的举例,而并非对实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引申出的显而易见的变化或变动仍处于本发明的保护范围之中。
Claims (8)
1.一种表面疏水的感温变色面料的制备方法,其特征在于,包括以下步骤:
(1)、通过纺丝法制备得到感温变色纳米粉体和疏水性聚合物复合的超细纤维;
(2)、将步骤(1)所述的超细纤维通过高速剪切分散得到悬浊液,所述悬浊液含有感温变色纳米粉体和疏水性聚合物复合的超微粒子;
(3)、将步骤(2)所述的悬浊液中加入聚合单体、羧甲基纤维素钠与自由基聚合引发剂构成功能性后整理液,所述的聚合单体为乙二醇二甲基丙烯酸酯、甲基丙烯酸、甲基丙烯酸甲酯;
(4)、将步骤(3)所述的功能性后整理液刮涂在普通面料表面,然后经烘焙即可得到表面疏水的感温变色面料。
2.根据权利要求1所述的一种表面疏水的感温变色面料的制备方法,其特征在于,步骤(4)所述烘焙的温度130-150℃,烘焙的时间5-8 min;烘焙完成后,面料克重增加量在9-12g/㎡。
3.根据权利要求1所述的一种表面疏水的感温变色面料的制备方法,其特征在于,步骤(3)所述聚合单体的添加总量占功能性后整理液总质量的35~40%,所述乙二醇二甲基丙烯酸酯占聚合单体总质量的3~8%。
4.根据权利要求1所述的一种表面疏水的感温变色面料的制备方法,其特征在于,步骤(3)所述自由基聚合引发剂含量为聚合单体总质量的0.8~1%。
5.根据权利要求1所述的一种表面疏水的感温变色面料的制备方法,其特征在于,步骤(3)所述羧甲基纤维素钠的添加量为功能性后整理液总质量的0.3~0.5%。
6.根据权利要求1所述的一种表面疏水的感温变色面料的制备方法,其特征在于,步骤(1)所述超细纤维的直径为300~700nm。
7.根据权利要求1所述的一种表面疏水的感温变色面料的制备方法,其特征在于,所述超微粒子占功能性后整理液总质量的30~40%。
8.根据权利要求1所述的一种表面疏水的感温变色面料的制备方法,其特征在于,步骤(2)所述高速剪切分散的转速高于1000rmp/min,时间为大于50min。
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