CN111087654B - 一种透明隔热防静电膜及制备方法、复合膜及制备方法 - Google Patents
一种透明隔热防静电膜及制备方法、复合膜及制备方法 Download PDFInfo
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Abstract
本发明属于薄膜材料技术领域,具体涉及一种透明隔热防静电膜,包括按重量份数计的如下原料:纳米掺锑氧化锡(ATO)1‑30份,TEMPO氧化的纳米纤维素纤维30‑90份,水性成膜剂10‑60份,分散剂1‑5份;其制备方法为:1)将纳米ATO分散均匀,ATO得到分散液;2)向纳米ATO分散液中加TEMPO氧化的纳米纤维素纤维,分散均匀,得到混合分散液;3)向混合分散液中加入水性成膜剂,分散均匀;再加入分散剂稀释液分散均匀,得到浆料;4)将上述浆料涂布在基材上,经烘干、剥离基材,卷取得到所述透明隔热防静电膜。本发明还提供一种包括上述透明隔热防静电膜的复合膜及其制备方法。本发明的透明隔热防静电膜的透光率可以达到75‑98%,同时具有隔热和静电屏蔽的功能。
Description
技术领域
本发明属于薄膜材料技术领域,具体涉及一种透明隔热防静电膜及制备方法、复合膜及制备方法。
背景技术
建筑节能的发展要求建筑玻璃具有很好的透光性,同时能够阻挡太阳光的红外辐射。目前,常见的镀膜玻璃、贴膜玻璃、中空玻璃等节能玻璃都具有一定的隔热效果,但可见光区的透过率普遍偏低(<75%),影响建筑釆光,且隔热效果不佳。
发明内容
为了克服上述现有技术存在的不足,本发明的目的是提供一种透明隔热防静电膜及制备方法、复合膜及制备方法,能够提高膜的透光率、隔热效果以及静电屏蔽效果。
为实现上述目的,本发明的技术方案为一种透明隔热防静电膜,包括按重量份数计的如下原料:纳米ATO(掺锑氧化锡)1-30份,TEMPO氧化的纳米纤维素纤维30-90份,水性成膜剂10-60份,分散剂1-5份。
优化地,所述透明隔热防静电膜还包括紫外线吸收剂0.1-2份,所述紫外线吸收剂为二苯甲酮类紫外吸收剂、苯并***类紫外吸收剂中的至少一种。所述二苯甲酮类紫外线吸收剂为紫外线吸收剂UV-531;所述苯并***类紫外线吸收剂为紫外线吸收剂UV-326、紫外线吸收剂UV-327、紫外线吸收剂UV-328中的至少一种。
优化地,所述透明隔热防静电膜还包括消泡剂0.1-2份,所述消泡剂为聚硅氧烷—聚醚共聚乳液型消泡剂。
进一步地,所述分散剂为聚丙烯酰胺、聚丙烯酸钠、十二烷基磺酸钠、甲基苯磺酸胺、六偏磷酸钠、三聚磷酸钠中的至少一种;所述水性成膜剂为硅丙树脂、环氧树脂、水性聚氨酯中的至少一种。
进一步地,所述透明隔热防静电膜的厚度为2-100μm。
本发明还提供上述透明隔热防静电膜的制备方法,包括如下步骤:
1)将纳米ATO、水和分散剂放入高速搅拌机中搅拌均匀,得到纳米ATO分散液;
2)向纳米ATO分散液中加TEMPO氧化的纳米纤维素纤维,继续搅拌分散5-12h,得到混合分散液;
3)向混合分散液中加入水性成膜剂,继续搅拌分散均匀;再加入分散剂稀释液搅拌分散均匀,得到浆料;
4)将上述浆料涂布在基材上,送至烘箱烘干后,剥离基材,卷取得到所述透明隔热防静电膜。
进一步地,步骤2)中,还向纳米ATO分散液中加入有紫外线吸收剂。
进一步地,步骤3)中,在向混合分散液中加入分散剂稀释液搅拌分散均匀后,采用真空脱泡或者加入消泡剂后缓慢搅拌脱泡,得到浆料。
进一步地,步骤1)中搅拌的转速为10000-45000r/min,步骤2)中搅拌的转速为5000-10000r/min;步骤3)中得到的浆料的粘度为1100-1200mPa·s。
本发明还提供一种复合膜,包括透明基材以及贴于所述透明基材上的如上所述的透明隔热防静电膜;所述透明基材为PC透明薄膜、PET透明薄膜、PMMA透明薄膜、PA透明薄膜、PS透明薄膜、PE透明薄膜中的任意一种。
本发明还提供上述复合膜的制备方法,包括如下步骤:
1)将纳米ATO、水和分散剂放入高速搅拌机中搅拌均匀,得到纳米ATO分散液;
2)向纳米ATO分散液中加TEMPO氧化的纳米纤维素纤维,继续搅拌分散5-12h,得到混合分散液;
3)向混合分散液中加入水性成膜剂,继续搅拌分散均匀;再加入分散剂稀释液搅拌分散均匀,得到浆料;
4)将上述浆料涂布在透明基材上,送至烘箱烘干后,卷取得到所述复合膜。
本发明的原理如下:
本发明采用纳米ATO 和TEMPO氧化的纳米纤维素纤维制备透明隔热防静电膜,其中,纳米ATO属于n型半导体,具有良好的导电性,浅色透明,添加到膜中使膜具有较好的透光性、静电屏蔽以及隔热性能,尺寸10-60nm;TEMPO氧化的纳米纤维素纤维具有良好的尺寸性,长径比大,直径2-3nm,长度30-100微米,小于光波的尺寸,成膜透光性良好,单独成膜可见光透光率可达99%,与ATO混合成膜时能显著提高膜的透光率,同时使得制备的膜具有很好的柔性,便于贴膜。TEMPO氧化的纳米纤维素纤维的分散性良好,可以作为分散剂分散纳米ATO,提高纳米ATO分散液的分散均匀性,避免ATO颗粒之间团聚;此外,由于TEMPO氧化的纳米纤维素纤维具有流变特性,可以使成型容易,成膜工艺多样、灵活;且TEMPO氧化的纳米纤维素纤维轻质,尺寸小,可以制备很薄的涂层(0.5-10微米);其表面富含官能团,可以很好的和透明基材之间结合,且材料绿色环保,可以降解。
与现有技术相比,本发明具有以下有益效果:
(1)本发明采用纳米掺锑氧化锡(ATO)和TEMPO氧化的纳米纤维素纤维制备的透明隔热防静电膜的透明度高,透光率可以达到75-98%,同时具有隔热和静电屏蔽的功能,厚度2-100微米;
(2)由于所采用的ATO纳米粉体比表面积大,表面活性高,颗粒之间极易发生团聚,本发明通过TEMPO氧化的纳米纤维素纤维与分散剂共同作用提高ATO粉末的分散性;
(3)本发明的成型工艺的灵活性,可以将透明隔热防静电膜所采用的原料制备成涂料,涂料稳定,水系环保;也可以直接沉积成膜;还可以将制备的浆料涂布在基材上,经烘干后剥离基材,卷取得到透明隔热防静电膜,或者将制备的浆料涂布在透明基材上,经烘干后,卷取得到复合膜。
(4)本发明提供的透明隔热防静电膜中加入有紫外线吸收剂,使膜具有防紫外线功能,通过紫外吸收防止膜长期使用变脆,延长制品的寿命。
具体实施方式
下面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做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。
以下实施例1至实施例4中所采用的纳米ATO(商购)的粒径为10-60nm,比表面积为70-90m2/g,颜色为浅白色。
实施例1
本实施例提供一种透明隔热防静电膜,包括按重量份数计的如下原料:纳米ATO20份,TEMPO氧化的纳米纤维素纤维50份,硅丙树脂30份,六偏磷酸钠2份,二苯甲酮类紫外吸收剂1份,聚硅氧烷—聚醚共聚乳液型消泡剂1份。
上述透明隔热防静电膜的制备方法,包括如下步骤:
步骤1),将纳米ATO、水和六偏磷酸钠放入高速搅拌机中,在20000r/min下搅拌均匀,得到纳米ATO分散液;
步骤2),向纳米ATO分散液中加TEMPO氧化的纳米纤维素纤维和二苯甲酮类紫外吸收剂,继续搅拌,在5000r/min下分散10h,得到混合分散液;
步骤3),向混合分散液中加入硅丙树脂,继续搅拌分散均匀;再加入六偏磷酸钠稀释液搅拌分散均匀,调节浆料粘度和分散性,之后加入聚硅氧烷—聚醚共聚乳液型消泡剂缓慢搅拌脱泡,得到浆料;浆料的粘度为1100mPa·s;
步骤4),将上述浆料涂布在基材上,送至烘箱烘干后,剥离基材,卷取得到所述透明隔热防静电膜。
本实施例还提供一种复合膜,包括PET透明薄膜以及贴于所述PET透明薄膜上的如上所述的透明隔热防静电膜或者采用如上所述制备方法制备的透明隔热防静电膜。
上述复合膜的制备方法,包括如下步骤:
其中,步骤1)至步骤3)与上述透明隔热防静电膜的制备方法中的步骤1)至步骤3)相同;
步骤4),将步骤3)中的浆料涂布在PET透明薄膜上,送至烘箱烘干后,卷取得到所述复合膜。
本实施例制备的透明隔热防静电膜的可见光透光度85%,隔热温度8℃,厚度25微米;制备的复合膜的可见光透光度90%,隔热温度8℃,PET透明薄膜上的涂层厚度10微米。
实施例2
本实施例提供一种透明隔热防静电膜,包括按重量份数计的如下原料:纳米ATO10份,TEMPO氧化的纳米纤维素纤维80份,环氧树脂10份,六偏磷酸钠0.5份,三聚磷酸钠0.5份,苯并***类紫外吸收剂0.1份,聚硅氧烷—聚醚共聚乳液型消泡剂0.1份。
上述透明隔热防静电膜的制备方法,包括如下步骤:
步骤1),将纳米ATO、水和六偏磷酸钠放入高速搅拌机中,在10000r/min下搅拌均匀,得到纳米ATO分散液;
步骤2),向纳米ATO分散液中加TEMPO氧化的纳米纤维素纤维和苯并***类紫外吸收剂,继续搅拌,在10000r/min下分散10h,得到混合分散液;
步骤3),向混合分散液中加入环氧树脂,继续搅拌分散均匀;再加入三聚磷酸钠稀释液搅拌分散均匀,之后加入聚硅氧烷—聚醚共聚乳液型消泡剂缓慢搅拌脱泡,得到浆料;浆料的粘度为1200mPa·s;
步骤4),将上述浆料涂布在基材上,送至烘箱烘干后,剥离基材,卷取得到所述透明隔热防静电膜。
本实施例还提供一种复合膜,包括PE透明薄膜以及贴于所述PE透明薄膜上的如上所述的透明隔热防静电膜或者采用如上所述制备方法制备的透明隔热防静电膜。
上述复合膜的制备方法,包括如下步骤:
其中,步骤1)至步骤3)与上述透明隔热防静电膜的制备方法中的步骤1)至步骤3)相同;
步骤4),将步骤3)中的浆料涂布在PE透明薄膜上,送至烘箱烘干后,卷取得到所述复合膜。
本实施例制备的透明隔热防静电膜的可见光透光度95%,隔热温度8℃,厚度15微米;制备的复合膜的可见光透光度90%,隔热温度8℃,PE透明薄膜上的涂层厚度5微米。
实施例3
本实施例提供一种透明隔热防静电膜,包括按重量份数计的如下原料:纳米ATO30份,TEMPO氧化的纳米纤维素纤维40份,硅丙树脂15份,环氧树脂10份,三聚磷酸钠3份,苯并***类紫外吸收剂2份。
上述透明隔热防静电膜的制备方法,包括如下步骤:
步骤1),将纳米ATO、水和三聚磷酸钠放入高速搅拌机中,在45000r/min下搅拌均匀,得到纳米ATO分散液;
步骤2),向纳米ATO分散液中加TEMPO氧化的纳米纤维素纤维和苯并***类紫外吸收剂,继续搅拌,在8000r/min下分散10h,得到混合分散液;
步骤3),向混合分散液中加入环氧树脂和硅丙树脂,继续搅拌分散均匀;再加入三聚磷酸钠稀释液搅拌分散均匀,采用真空脱泡后,得到浆料;浆料的粘度为1200mPa·s;
步骤4),将上述浆料涂布在基材上,送至烘箱烘干后,剥离基材,卷取得到所述透明隔热防静电膜。
本实施例制备的透明隔热防静电膜的可见光透光度85%,隔热温度10℃,厚度30微米。
实施例4
本实施例提供一种透明隔热防静电膜,包括按重量份数计的如下原料:纳米ATO15份,TEMPO氧化的纳米纤维素纤维50份,环氧树脂30份,聚丙烯酸钠4份,聚硅氧烷—聚醚共聚乳液型消泡剂1份。
上述透明隔热防静电膜的制备方法,包括如下步骤:
步骤1),将纳米ATO、水和聚丙烯酸钠放入高速搅拌机中,在30000r/min下搅拌均匀,得到纳米ATO分散液;
步骤2),向纳米ATO分散液中加TEMPO氧化的纳米纤维素纤维,继续搅拌,在9000r/min下分散10h,得到混合分散液;
步骤3),向混合分散液中加入环氧树脂,继续搅拌分散均匀;再加入聚丙烯酸钠稀释液缓慢搅拌分散均匀,之后加入聚硅氧烷—聚醚共聚乳液型消泡剂缓慢搅拌脱泡,得到浆料;浆料的粘度为1100mPa·s;
步骤4),将上述浆料涂布在基材上,送至烘箱烘干后,剥离基材,卷取得到所述透明隔热防静电膜。
本实施例还提供一种复合膜,包括PC透明薄膜以及贴于所述PC透明薄膜上的如上所述的透明隔热防静电膜或者采用如上所述制备方法制备的透明隔热防静电膜。
上述复合膜的制备方法,包括如下步骤:
其中,步骤1)至步骤3)与上述透明隔热防静电膜的制备方法中的步骤1)至步骤3)相同;
步骤4),将步骤3)中的浆料涂布在PC透明薄膜上,送至烘箱烘干后,卷取得到所述复合膜。
本实施例制备的透明隔热防静电膜的可见光透光度80%,隔热温度8℃,厚度80微米;制备的复合膜的可见光透光度85%,隔热温度8℃,PC透明薄膜上的涂层厚度10微米。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (10)
1.一种透明隔热防静电膜,其特征在于,包括按重量份数计的如下原料:纳米ATO 1-30份,TEMPO氧化的纳米纤维素纤维30-90份,水性成膜剂10-60份,分散剂1-5份;所述TEMPO氧化的纳米纤维素纤维的直径为2-3nm,长度为30-100μm;所述水性成膜剂为硅丙树脂、环氧树脂、水性聚氨酯中的至少一种。
2.如权利要求1所述的一种透明隔热防静电膜,其特征在于:还包括紫外线吸收剂0.1-2份,所述紫外线吸收剂为二苯甲酮类紫外吸收剂、苯并***类紫外吸收剂中的至少一种。
3.如权利要求1所述的一种透明隔热防静电膜,其特征在于:还包括消泡剂0.1-2份,所述消泡剂为聚硅氧烷—聚醚共聚乳液型消泡剂。
4.如权利要求1所述的一种透明隔热防静电膜,其特征在于:所述透明隔热防静电膜的厚度为2-100μm。
5.一种如权利要求1所述的透明隔热防静电膜的制备方法,其特征在于,包括如下步骤:
1)将纳米ATO、水和分散剂放入高速搅拌机中搅拌均匀,得到纳米ATO分散液;
2)向纳米ATO分散液中加TEMPO氧化的纳米纤维素纤维,继续搅拌分散5-12h,得到混合分散液;
3)向混合分散液中加入水性成膜剂,继续搅拌分散均匀;再加入分散剂稀释液低速搅拌分散均匀,得到浆料;
4)将上述浆料涂布在基材上,送至烘箱烘干后,剥离基材,卷取得到所述透明隔热防静电膜。
6.如权利要求5所述的一种透明隔热防静电膜的制备方法,其特征在于:步骤2)中,还向纳米ATO分散液中加入紫外线吸收剂。
7.如权利要求5所述的一种透明隔热防静电膜的制备方法,其特征在于:步骤3)中,在向混合分散液中加入分散剂稀释液搅拌分散均匀后,采用真空脱泡或者加入消泡剂后缓慢搅拌脱泡,得到浆料。
8.如权利要求5所述的一种透明隔热防静电膜的制备方法,其特征在于:步骤1)中搅拌的转速为10000-45000r/min,步骤2)中搅拌的转速为5000-10000r/min;步骤3)中得到的浆料的粘度为900-1800mPa·s。
9.一种复合膜,其特征在于:包括透明基材以及贴于所述透明基材上的如权利要求1-4任一项所述的透明隔热防静电膜;所述透明基材为PC透明薄膜、PET透明薄膜、PMMA透明薄膜、PA透明薄膜、PS透明薄膜、PE透明薄膜中的任意一种。
10.一种如权利要求9所述的复合膜的制备方法,其特征在于,包括如下步骤:
1)将纳米ATO、水和分散剂放入高速搅拌机中搅拌均匀,得到纳米ATO分散液;
2)向纳米ATO分散液中加TEMPO氧化的纳米纤维素纤维,继续搅拌分散5-12h,得到混合分散液;
3)向混合分散液中加入水性成膜剂,继续搅拌分散均匀;再加入分散剂稀释液搅拌分散均匀,得到浆料;
4)将上述浆料涂布在透明基材上,送至烘箱烘干后,卷取得到所述复合膜。
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