CN107779116A - 多彩防紫外车窗膜及其制备方法 - Google Patents
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Abstract
本发明提供一种兼具彩色外观、变色效果和防紫外线效果的多彩防紫外车窗膜及其制备方法。一种多彩防紫外车窗膜,包括依次设置的多彩变色膜层、防紫外胶粘层和离型膜层,所述的多彩变色膜层是用重量比为1~3:10的二氧化钒和聚乙二醇水溶液的分散液,按照重量比5~10:100,加入到重量比为1.5~2.5:2.5~3.5:5的三氟乙酸、二氯甲烷和PET树脂的混合液中,并加入色母粉搅拌后使用流延法得到多彩变色膜层;所述的离型膜层复合在防紫外胶粘层表面。本发明的多彩防紫外车窗膜,具有防紫外线和多彩变色的功能,在有效防止紫外线的功能基础上具有外观颜色多变的优点,可以满足人们的个性化需求。
Description
技术领域
本发明涉及一种车窗膜,特别涉及一种多彩防紫外车窗膜及其制备方法。
背景技术
聚对苯二甲酸乙二醇酯(简称PET)在较宽的温度范围内具有优良的物理机械性能,长期使用温度可达120℃,电绝缘性优良,甚至在高温高频下,其电性能仍较好,抗蠕变性,耐疲劳性,耐摩擦性、尺寸稳定性都很好。PET膜具有良好的力学性能,冲击强度是其他薄膜的3~5倍,耐折性好,广泛应用于车窗膜的制造。
二氧化钒是一种具有相变特性的过渡金属氧化物,因此,用二氧化钒制备的薄膜可以实现智能调节太阳光和红外线的目的,在节能涂层,光存储材料,激光防护等方面有着广泛的用途。在二氧化钒膜的多种制备方法中,脉冲激光沉积法或脉冲激光剥离沉积法和磁控溅射法或溅射法可以获得质量较高的成品膜,但是具有设备昂贵和成膜面积小的劣势,不适合批量生产。溶胶-凝胶法工艺简单,可以大面积成膜,生产成本也较低,但是此方法中使用的前驱体物料实际上仍然是较为昂贵的。而使用粉体通过有机介质调浆,然后采用简单的涂覆法和喷涂法工艺成膜,虽然方法原始,但特别适用于大面积成膜。
传统车窗膜的设计通常关注与对紫外线或高热量红外线的阻隔,而对眩光、隔热和膜外观颜色的关注度不够,市场上没有一款可以呈现多种颜色效果并且具有紫外线和眩光防护性的车窗膜产品,因此,如何结合并利用新型材料,使生产出的车窗膜在具有防紫外线防眩光的功能性基础上,兼具彩色效果或变色效果等外观性特点,是很有必要的一项研究。
发明内容
本发明的目的在于提供一种兼具彩色外观、变色效果和防紫外线效果的多彩防紫外车窗膜及其制备方法,解决以上背景技术中提出的问题。
本发明解决其技术问题所采用的技术方案是:
一种多彩防紫外车窗膜,包括依次设置的多彩变色膜层、防紫外胶粘层和离型膜层,所述的多彩变色膜层是用重量比为1~3:10的二氧化钒和聚乙二醇水溶液的分散液,按照重量比5~10:100,加入到重量比为1.5~2.5:2.5~3.5:5的三氟乙酸、二氯甲烷和PET树脂的混合液中,并加入色母粉搅拌后使用流延法得到多彩变色膜层;所述的防紫外胶粘层是用以下重量百分比的组份制成的混合溶液涂覆在多彩变色膜层表面后在温度60~120摄氏度放置80~120s固化得到:三氧化钨2~6%、丙烯酸胶粘剂35-55%、乙酸乙酯溶剂45-60%和固化剂1-5%,上述各组份之和为100%;所述的离型膜层复合在防紫外胶粘层表面。
作为优选,所述聚乙二醇的相对分子质量为1000或1500。此时的聚乙二醇为液态,适合制作分散液。
作为优选,所述二氧化钒为单体粒径在100~1000nm的二氧化钒粉体。粒径过小,粉体造价高,难于大量制备;粒径过大,粉体分散效果差,通过比对激光诱导气相反应法、气流喷雾分解稀溶液法和传统的二氧化钒制备方法,单体粒径在100nm和1000nm之间的二氧化钒粉体具有最佳的批量生产效益和粉体分散效果的平衡性。
作为优选,所述三氧化钨为粒径不超过200nm的三氧化钨粉末。纳米级的三氧化钨微粒可以改善三氧化钨本身与有机溶剂、聚合物等的亲或性,提高单分散性,使成膜的防紫外效果均匀。
作为优选,所述多彩防紫外车窗膜的厚度为95~285μm,其中,多彩变色膜层的厚度为35~155μm,防紫外胶粘层的厚度为15~55μm,离型膜层的厚度为45~75μm。
一种多彩防紫外车窗膜的制备方法,具体包括以下步骤:
(1)将聚乙二醇和水按照1:1比例制成混合液;
(2)将单体粒径在100~1000nm的二氧化钒粉末按照重量比1~3:10加入到步骤(1)的混合液中,搅拌形成二氧化钒分散液;
(3)将三氟乙酸、二氯甲烷、PET树脂按照重量比1.5~2.5:2.5~3.5:5制成PET溶液;
(4)将色母粉和步骤(2)的二氧化钒分散液加入到步骤(3)的PET溶液中,二氧化钒分散液和PET溶液的重量比为5~10:100,搅拌形成含有色母和二氧化钒的PET混合液;
(5)使用流延法将PET混合液制成多彩变色膜层;
(6)按照重量百分比将粒径不超过200nm的三氧化钨粉末2~6%、丙烯酸胶粘剂35~55%、固化剂1~5%和乙酸乙酯溶剂45~60%制成防紫外混合溶液;
(7)将步骤(6)的混合溶液涂覆在步骤(5)的多彩变色膜层表面,在温度60~120摄氏度放置80~120s固化得到防紫外胶粘层;
(8)将离型膜复合到步骤(7)的防紫外胶粘层表面。
本发明的有益效果是:
本发明的多彩防紫外车窗膜,具有防紫外线和多彩变色的功能,在有效防止紫外线的功能基础上具有外观颜色多变的优点,可以满足人们的个性化需求,该车窗膜的层结构较为简单,有利于降低制备成本,并且该车窗膜的制备方法可以使功能性组份在薄膜中分散均匀,使车窗膜呈现最佳的视觉效果。
附图说明
图1是本发明的主视结构示意图。
图中:1、多彩变色膜层,2、防紫外胶粘层,3、离型膜层。
具体实施方式
下面通过具体实施例,并结合附图,对本发明的技术方案作进一步的具体说明。应当理解,本发明的实施并不局限于下面的实施例,对本发明所做的任何形式上的变通和/或改变都将落入本发明保护范围。
实施例1:
如图1所示的一种多彩防紫外车窗膜,包括依次设置的多彩变色膜层、防紫外胶粘层和离型膜层。多彩防紫外车窗膜的厚度为95μm,其中,多彩变色膜层的厚度为35μm,防紫外胶粘层的厚度为15μm,离型膜层的厚度为45μm。
按照以下步骤制备多彩防紫外车窗膜A:
(1)将相对分子质量为1000的聚乙二醇(简称PEG-1000)和水按照1:1比例制成混合液;
(2)将单体粒径在100nm的二氧化钒粉末按照重量比1:10加入到步骤(1)的混合液中,搅拌形成二氧化钒分散液;
(3)将三氟乙酸、二氯甲烷、PET树脂按照重量比1.5:2.5:5制成PET溶液;
(4)将色母粉和步骤(2)的二氧化钒分散液加入到步骤(3)的PET溶液中,二氧化钒分散液和PET溶液的重量比为5:100,搅拌形成含有色母和二氧化钒的PET混合液;
(5)使用流延法将PET混合液制成多彩变色膜层;
(6)按照重量百分比将粒径不超过200nm的三氧化钨粉末2%、丙烯酸胶粘剂35%、固化剂3%和乙酸乙酯溶剂60%制成防紫外混合溶液;
(7)将步骤(6)的混合溶液涂覆在步骤(5)的多彩变色膜层表面,在温度120摄氏度放置80s固化得到防紫外胶粘层;
(8)将离型膜复合到步骤(7)的防紫外胶粘层表面。
实施例2:
一种多彩防紫外车窗膜,包括依次设置的多彩变色膜层、防紫外胶粘层和离型膜层。多彩防紫外车窗膜的厚度为185μm,其中,多彩变色膜层的厚度为95μm,防紫外胶粘层的厚度为35μm,离型膜层的厚度为55μm。
按照以下步骤制备多彩防紫外车窗膜B:
(1)将相对分子质量为1500的聚乙二醇(简称PEG-1500)和水按照1:1比例制成混合液;
(2)将单体粒径在1000nm的二氧化钒粉末按照重量比2:10加入到步骤(1)的混合液中,搅拌形成二氧化钒分散液;
(3)将三氟乙酸、二氯甲烷、PET树脂按照重量比2.5:3:5制成PET溶液;
(4)将色母粉和步骤(2)的二氧化钒分散液加入到步骤(3)的PET溶液中,二氧化钒分散液和PET溶液的重量比为10:100,搅拌形成含有色母和二氧化钒的PET混合液;
(5)使用流延法将PET混合液制成多彩变色膜层;
(6)按照重量百分比将粒径不超过200nm的三氧化钨粉末4%、丙烯酸胶粘剂45%、固化剂5%和乙酸乙酯溶剂46%制成防紫外混合溶液;
(7)将步骤(6)的混合溶液涂覆在步骤(5)的多彩变色膜层表面,在温度90摄氏度放置100s固化得到防紫外胶粘层;
(8)将离型膜复合到步骤(7)的防紫外胶粘层表面。
实施例3:
一种多彩防紫外车窗膜,包括依次设置的多彩变色膜层、防紫外胶粘层和离型膜层。多彩防紫外车窗膜的厚度为285μm,其中,多彩变色膜层的厚度为155μm,防紫外胶粘层的厚度为55μm,离型膜层的厚度为75μm。
按照以下步骤制备多彩防紫外车窗膜C:
(1)将相对分子质量为1500的聚乙二醇(简称PEG-1500)和水按照1:1比例制成混合液;
(2)将单体粒径在1000nm的二氧化钒粉末按照重量比3:10加入到步骤(1)的混合液中,搅拌形成二氧化钒分散液;
(3)将三氟乙酸、二氯甲烷、PET树脂按照重量比2.5:3.5:5制成PET溶液;
(4)将色母粉和步骤(2)的二氧化钒分散液加入到步骤(3)的PET溶液中,二氧化钒分散液和PET溶液的重量比为10:100,搅拌形成含有色母和二氧化钒的PET混合液;
(5)使用流延法将PET混合液制成多彩变色膜层;
(6)按照重量百分比将粒径不超过200nm的三氧化钨粉末5%、丙烯酸胶粘剂40%、固化剂5%和乙酸乙酯溶剂50%制成防紫外混合溶液;
(7)将步骤(6)的混合溶液涂覆在步骤(5)的多彩变色膜层表面,在温度80摄氏度放置120s固化得到防紫外胶粘层;
(8)将离型膜复合到步骤(7)的防紫外胶粘层表面。
对以上制备的多彩防紫外车窗膜A~C根据GB/T2680检测紫外阻隔率,根据GB/T6739检测表面硬度,根据GB/T2410检测透光率,结果见表1。
表1
项目 | 多彩防紫外车窗膜A | 多彩防紫外车窗膜B | 多彩防紫外车窗膜C |
紫外阻隔率 | 99.32% | 99.48% | 99.6% |
表面硬度 | 3H | 3H | 3H |
透光率 | 58%~63% | 56%~62% | 56%~60% |
外观 | 稍暗彩色、变色 | 彩色、变色 | 稍亮彩色、变色 |
以上所述的实施例只是本发明的一种较佳的方案,并非对本发明作任何形式上的限制,在不超出权利要求所记载的技术方案的前提下还有其它的变体及改型。
Claims (10)
1.一种多彩防紫外车窗膜,其特征在于:该多彩防紫外车窗膜包括依次设置的多彩变色膜层、防紫外胶粘层和离型膜层,所述的多彩变色膜层是用重量比为1~3:10的二氧化钒和聚乙二醇水溶液的分散液,按照重量比5~10:100,加入到重量比为1.5~2.5:2.5~3.5:5的三氟乙酸、二氯甲烷和PET树脂的混合液中,并加入色母粉搅拌后使用流延法得到多彩变色膜层;所述的防紫外胶粘层是用以下重量百分比的组份制成的混合溶液涂覆在多彩变色膜层表面后在温度60~120摄氏度放置80~120s固化得到:三氧化钨2~6%、丙烯酸胶粘剂35-55%、乙酸乙酯溶剂45-60%和固化剂1-5%,上述各组份之和为100%;所述的离型膜层复合在防紫外胶粘层表面。
2.根据权利要求1所述的多彩防紫外车窗膜,其特征在于:所述的聚乙二醇的相对分子质量为1000或1500。
3.根据权利要求1或2所述的多彩防紫外车窗膜,其特征在于:所述的二氧化钒为单体粒径在100~1000nm的二氧化钒粉体。
4.根据权利要求1或2所述的多彩防紫外车窗膜,其特征在于:所述的三氧化钨为粒径不超过200nm的三氧化钨粉末。
5.根据权利要求3所述的多彩防紫外车窗膜,其特征在于:所述的三氧化钨为粒径不超过200nm的三氧化钨粉末。
6.根据权利要求1或2所述的多彩防紫外车窗膜,其特征在于:所述的多彩防紫外车窗膜的厚度为95~285μm,其中,多彩变色膜层的厚度为35~155μm,防紫外胶粘层的厚度为15~55μm,离型膜层的厚度为45~75μm。
7.根据权利要求3所述的多彩防紫外车窗膜,其特征在于:所述的多彩防紫外车窗膜的厚度为95~285μm,其中,多彩变色膜层的厚度为35~155μm,防紫外胶粘层的厚度为15~55μm,离型膜层的厚度为45~75μm。
8.根据权利要求4所述的多彩防紫外车窗膜,其特征在于:所述的多彩防紫外车窗膜的厚度为95~285μm,其中,多彩变色膜层的厚度为35~155μm,防紫外胶粘层的厚度为15~55μm,离型膜层的厚度为45~75μm。
9.根据权利要求5所述的多彩防紫外车窗膜,其特征在于:所述的多彩防紫外车窗膜的厚度为95~285μm,其中,多彩变色膜层的厚度为35~155μm,防紫外胶粘层的厚度为15~55μm,离型膜层的厚度为45~75μm。
10.一种权利要求1所述的多彩防紫外车窗膜的制备方法,其特征在于该制备方法具体包括以下步骤:
(1)将聚乙二醇和水按照1:1比例制成混合液;
(2)将单体粒径在100~1000nm的二氧化钒粉末按照重量比1~3:10加入到步骤(1)的混合液中,搅拌形成二氧化钒分散液;
(3)将三氟乙酸、二氯甲烷、PET树脂按照重量比1.5~2.5:2.5~3.5:5制成PET溶液;
(4)将色母粉和步骤(2)的二氧化钒分散液加入到步骤(3)的PET溶液中,二氧化钒分散液和PET溶液的重量比为5~10:100,搅拌形成含有色母和二氧化钒的PET混合液;
(5)使用流延法将PET混合液制成多彩变色膜层;
(6)按照重量百分比将粒径不超过200nm的三氧化钨粉末2~6%、丙烯酸胶粘剂35~55%、固化剂1~5%和乙酸乙酯溶剂45~60%制成防紫外混合溶液;
(7)将步骤(6)的混合溶液涂覆在步骤(5)的多彩变色膜层表面,在温度60~120摄氏度放置80~120s固化得到防紫外胶粘层;
(8)将离型膜复合到步骤(7)的防紫外胶粘层表面。
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