CN108755255A - 一种局部哑光耐高温离型纸及其制备方法 - Google Patents
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Abstract
本发明提供一种局部哑光耐高温离型纸,包括原纸层,两侧有淋膜层,淋膜层表面有耐高温层,一侧的耐高温层上有哑光层,哑光层上形成窗口区,哑光层上方有离型剂涂层;耐高温层包括如下重量份数的组分:环氧改性有机硅树脂:20~35份;聚乙烯醇:15~25份;耐高温助剂:2.5~6份;填料:2~5份;锚固剂:0.1~0.5份;哑光层包括如下重量份数的组分:环氧硅树脂:45~55份;丁酮:10~15份;异丙醇:8~15份;二氧化硅消光粉:0.5~5份;纳米硅树脂填充料:0.1~1份;铂金催化剂:0.1~0.6份;导电剂:0.2~1.2份。所述局部哑光耐高温离型纸,局部哑光、附着力强、具有良好的耐高温效果,防止高温下离型纸碳化或燃烧,使用寿命长,且生产工艺简单,应用范围广。
Description
技术领域
本发明涉及一种局部哑光耐高温离型纸及其制备方法。
背景技术
离型纸的种类基本上可分为两大类:一类是用于生产聚氯乙烯(PVC)人造革用的离型纸;另一类是生产聚氨醋(PU)合成革用的离型纸。其中有些离型纸既能用于聚氯乙烯人造革,也能用于聚氨酯合成革。由于国内离型纸的生产,尤其是耐高温离型纸的生产技术不成熟,目前大多数耐高温离型纸均依赖于进口,因此研发耐高温离型纸不仅具有较高的市场价值,同时可打破国外企业对该产品系列的垄断状态。国产离型纸一旦开发成功并投向市场,必然会对进口纸的垄断价格产生降价压力,从而使我国耐高温纸应用商可以获得更为廉价的离型纸,降低其生产成本。
耐高温型离型纸可用于制造不同温度要求的合成革和人造革等等。国内对于耐高温型离型纸的研究始于1980年,但其耐温性能均不高,纸页的其他性能也不是很理想。如目前国内外的离型纸在相同温度200℃下恒温处理相同的时间,结果显示国外离型纸剥离性能好,在相同剥离次数后国外离型纸表面无破坏现象,国外离型纸的耐热性能好,其纸页的强度优于国内离型纸。因此这种性能好的耐高温型离型纸的开发具有很高的市场价值和社会价值。
发明内容
为解决上述存在的问题,本发明的目的在于提供一种局部哑光耐高温离型纸。所述局部哑光耐高温离型纸,局部哑光、附着力强、具有良好的耐高温效果,防止高温下离型纸碳化或燃烧,使用寿命长,且生产工艺简单,应用范围广。
为达到上述目的,本发明的技术方案是:
一种局部哑光耐高温离型纸,设置有原纸层,原纸层两侧设置有淋膜层,淋膜层表面覆盖有耐高温层,一侧的所述耐高温层上设置有哑光层,哑光层在局部位置空缺形成窗口区,哑光层上方涂覆有离型剂涂层;
其中,所述耐高温层包括如下重量份数的组分:环氧改性有机硅树脂:20~35份;聚乙烯醇:15~25份;耐高温助剂:2.5~6份;填料:2~5份;锚固剂:0.1~0.5份;在耐高温层添加耐高温助剂,使涂层具有良好的耐高温效果,所述耐高温层附着力效果好,耐高温性能持久;
所述哑光层包括如下重量份数的组分:环氧硅树脂:45~55份;丁酮:10~15份;异丙醇:8~15份;二氧化硅消光粉:0.5~5份;纳米硅树脂填充料:0.1~1份;铂金催化剂:0.1~0.6份;导电剂:0.2~1.2份;添加二氧化硅消光粉,获得光泽可控的涂层,哑光层与耐高温层及离型剂涂层的作用力增大,不易脱落,使用寿命长,同时离型纸的窗口区不含有哑光层,图案更加多样,同时节约原料。
进一步地,所述耐高温层包括如下重量份数的组分:环氧改性有机硅树脂:27~35份;聚乙烯醇:18~22份;耐高温助剂:4.5~6份;填料:2~3份;锚固剂:0.2~0.4份;
所述哑光层包括如下重量份数的组分:环氧硅树脂:45~50份;丁酮:10~12份;异丙醇:8~11份;二氧化硅消光粉:2.5~5份;纳米硅树脂填充料:0.1~0.5份;铂金催化剂:0.1~0.3份;导电剂:0.2~0.8份。
进一步地,所述耐高温层包括如下重量份数的组分:环氧改性有机硅树脂:32份;聚乙烯醇:20份;耐高温助剂:5.5份;填料:2.5份;锚固剂:0.3份;
所述哑光层包括如下重量份数的组分:环氧硅树脂:46份;丁酮:11份;异丙醇:9份;二氧化硅消光粉:3.5份;纳米硅树脂填充料:0.3份;铂金催化剂:0.2份;导电剂:0.5份。
进一步地,所述耐高温助剂为耐高温助剂为无机耐高温助剂超细硅酸铝。
进一步地,所述纳米硅树脂填充料的粒径为40~80nm。
一种局部哑光耐高温离型纸的制备方法,包括如下步骤:
1)原纸层处理:对原纸层进行烘干处理,使原纸膨松化;
2)涂淋膜层:原纸层两面采用淋膜机淋膜上一层淋膜层;
3)涂耐高温层:按比例将耐高温层中的各组分在溶剂中混合均匀,形成耐高温涂料,采用电子轴印刷机将耐高温涂料涂覆于淋膜层上,印刷速度为80~100m/min;
4)雕刻哑面花纹版线:在网纹辊上雕刻哑面花纹版线;
5)涂哑光层:按比例将哑光层中的各组分在溶剂中混合均匀,形成哑光涂料,采用网纹辊在一面的耐高温层表面印刷哑光涂料,形成哑光层,印刷速度为60~80m/min;
6)恒温烘箱固化:将产品放入恒温烘箱连续不断固化12~24h,固化温度为80~90℃;
7)复卷;
8)涂离型剂涂层:采用丙烯酸树脂,用脂类溶剂融合,形成固含量为25%的可流动性液体,采用凹版印刷的方式涂布在哑光层上,使用的网版网线为120~140线/英寸,涂布机车速为30~50m/min,涂布完成后在60~70℃的恒温烘箱下烘干。
进一步地,所述网纹辊上雕刻150~200目的哑面花纹版线。
本发明的有益效果在于:
本发明所述的一种局部哑光耐高温离型纸,局部哑光、附着力强、具有良好的耐高温效果,防止高温下离型纸碳化或燃烧,使用寿命长,且生产工艺简单,应用范围广。
具体实施方式
实施例1
一种局部哑光耐高温离型纸,设置有原纸层,原纸层两侧设置有淋膜层,淋膜层表面覆盖有耐高温层,一侧的所述耐高温层上设置有哑光层,哑光层在局部位置空缺形成窗口区,哑光层上方涂覆有离型剂涂层;
其中,所述耐高温层包括如下重量份数的组分:环氧改性有机硅树脂:24份;聚乙烯醇:21份;耐高温助剂:4份;填料:3.5份;锚固剂:0.1份;
所述哑光层包括如下重量份数的组分:环氧硅树脂:45份;丁酮:13份;异丙醇:10份;二氧化硅消光粉:2.5份;纳米硅树脂填充料:1份;铂金催化剂:0.1份;导电剂:0.7份。
实施例2
一种局部哑光耐高温离型纸,设置有原纸层,原纸层两侧设置有淋膜层,淋膜层表面覆盖有耐高温层,一侧的所述耐高温层上设置有哑光层,哑光层在局部位置空缺形成窗口区,哑光层上方涂覆有离型剂涂层;
其中,所述耐高温层包括如下重量份数的组分:环氧改性有机硅树脂:20份;聚乙烯醇:25份;耐高温助剂:2.5份;填料:2份;锚固剂:0.2份;
所述哑光层包括如下重量份数的组分:环氧硅树脂:52份;丁酮:10份;异丙醇:15份;二氧化硅消光粉:0.5份;纳米硅树脂填充料:0.3份;铂金催化剂:0.4份;导电剂:1.2份。
实施例3
一种局部哑光耐高温离型纸,设置有原纸层,原纸层两侧设置有淋膜层,淋膜层表面覆盖有耐高温层,一侧的所述耐高温层上设置有哑光层,哑光层在局部位置空缺形成窗口区,哑光层上方涂覆有离型剂涂层;
其中,所述耐高温层包括如下重量份数的组分:环氧改性有机硅树脂:32份;聚乙烯醇:20份;耐高温助剂:5.5份;填料:2.5份;锚固剂:0.3份;
所述哑光层包括如下重量份数的组分:环氧硅树脂:46份;丁酮:11份;异丙醇:9份;二氧化硅消光粉:3.5份;纳米硅树脂填充料:0.3份;铂金催化剂:0.2份;导电剂:0.5份。
实施例4
一种局部哑光耐高温离型纸,设置有原纸层,原纸层两侧设置有淋膜层,淋膜层表面覆盖有耐高温层,一侧的所述耐高温层上设置有哑光层,哑光层在局部位置空缺形成窗口区,哑光层上方涂覆有离型剂涂层;
其中,所述耐高温层包括如下重量份数的组分:环氧改性有机硅树脂:35份;聚乙烯醇:15份;耐高温助剂:6份;填料:5份;锚固剂:0.2份;
所述哑光层包括如下重量份数的组分:环氧硅树脂:55份;丁酮: 15份;异丙醇:8份;二氧化硅消光粉:5份;纳米硅树脂填充料:0.2份;铂金催化剂:0.6份;导电剂:0.2份。
实施例5
一种局部哑光耐高温离型纸,设置有原纸层,原纸层两侧设置有淋膜层,淋膜层表面覆盖有耐高温层,一侧的所述耐高温层上设置有哑光层,哑光层在局部位置空缺形成窗口区,哑光层上方涂覆有离型剂涂层;
其中,所述耐高温层包括如下重量份数的组分:环氧改性有机硅树脂:31份;聚乙烯醇:19份;耐高温助剂:3.5份;填料:4份;锚固剂: 0.5份;
所述哑光层包括如下重量份数的组分:环氧硅树脂:48份;丁酮:11份;异丙醇:13份;二氧化硅消光粉:4份;纳米硅树脂填充料:0.1份;铂金催化剂:0.2份;导电剂:0.5份。
一种局部哑光耐高温离型纸的制备方法,包括如下步骤:
1)原纸层处理:对原纸层进行烘干处理,使原纸膨松化;
2)涂淋膜层:原纸层两面采用淋膜机淋膜上一层淋膜层;
3)涂耐高温层:按比例将耐高温层中的各组分在溶剂中混合均匀,形成耐高温涂料,采用电子轴印刷机将耐高温涂料涂覆于淋膜层上,印刷速度为80~100m/min;
4)雕刻哑面花纹版线:在网纹辊上雕刻哑面花纹版线;
5)涂哑光层:按比例将哑光层中的各组分在溶剂中混合均匀,形成哑光涂料,采用网纹辊在一面的耐高温层表面印刷哑光涂料,形成哑光层,印刷速度为60~80m/min;
6)恒温烘箱固化:将产品放入恒温烘箱连续不断固化12~24h,固化温度为80~90℃;
7)复卷;
8)涂离型剂涂层:采用丙烯酸树脂,用脂类溶剂融合,形成固含量为25%的可流动性液体,采用凹版印刷的方式涂布在哑光层上,使用的网版网线为120~140线/英寸,涂布机车速为30~50m/min,涂布完成后在60~70℃的恒温烘箱下烘干。
对实施例1~5中的局部哑光耐高温离型纸的性能进行测试,在200~300℃下耐高温,未出现离型纸碳化或燃烧。
需要说明的是,以上实施例仅用以说明本发明的技术方案而非限制。尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的范围,其均应涵盖在本发明的权利要求范围中。
Claims (7)
1.一种局部哑光耐高温离型纸,其特征在于,设置有原纸层,原纸层两侧设置有淋膜层,淋膜层表面覆盖有耐高温层,一侧的所述耐高温层上设置有哑光层,哑光层在局部位置空缺形成窗口区,哑光层上方涂覆有离型剂涂层;
其中,所述耐高温层包括如下重量份数的组分:环氧改性有机硅树脂:20~35份;聚乙烯醇:15~25份;耐高温助剂:2.5~6份;填料:2~5份;锚固剂:0.1~0.5份;
所述哑光层包括如下重量份数的组分:环氧硅树脂:45~55份;丁酮:10~15份;异丙醇:8~15份;二氧化硅消光粉:0.5~5份;纳米硅树脂填充料:0.1~1份;铂金催化剂:0.1~0.6份;导电剂:0.2~1.2份。
2.根据权利要求1所述的局部哑光耐高温离型纸,其特征在于,所述耐高温层包括如下重量份数的组分:环氧改性有机硅树脂:27~35份;聚乙烯醇:18~22份;耐高温助剂:4.5~6份;填料:2~3份;锚固剂:0.2~0.4份;
所述哑光层包括如下重量份数的组分:环氧硅树脂:45~50份;丁酮:10~12份;异丙醇:8~11份;二氧化硅消光粉:2.5~5份;纳米硅树脂填充料:0.1~0.5份;铂金催化剂:0.1~0.3份;导电剂:0.2~0.8份。
3.根据权利要求1所述的局部哑光耐高温离型纸,其特征在于,所述耐高温层包括如下重量份数的组分:环氧改性有机硅树脂:32份;聚乙烯醇:20份;耐高温助剂:5.5份;填料:2.5份;锚固剂:0.3份;
所述哑光层包括如下重量份数的组分:环氧硅树脂:46份;丁酮:11份;异丙醇:9份;二氧化硅消光粉:3.5份;纳米硅树脂填充料:0.3份;铂金催化剂:0.2份;导电剂:0.5份。
4.根据权利要求1所述的局部哑光耐高温离型纸,其特征在于,所述耐高温助剂为耐高温助剂为无机耐高温助剂超细硅酸铝。
5.根据权利要求1所述的局部哑光耐高温离型纸,其特征在于,所述纳米硅树脂填充料的粒径为40~80nm。
6.如权利要求1~5所述的局部哑光耐高温离型纸的制备方法,其特征在于,包括如下步骤:
1)原纸层处理:对原纸层进行烘干处理,使原纸膨松化;
2)涂淋膜层:原纸层两面采用淋膜机淋膜上一层淋膜层;
3)涂耐高温层:按比例将耐高温层中的各组分在溶剂中混合均匀,形成耐高温涂料,采用电子轴印刷机将耐高温涂料涂覆于淋膜层上,印刷速度为80~100m/min;
4)雕刻哑面花纹版线:在网纹辊上雕刻哑面花纹版线;
5)涂哑光层:按比例将哑光层中的各组分在溶剂中混合均匀,形成哑光涂料,采用网纹辊在一面的耐高温层表面印刷哑光涂料,形成哑光层,印刷速度为60~80m/min;
6)恒温烘箱固化:将产品放入恒温烘箱连续不断固化12~24h,固化温度为80~90℃;
7)复卷;
8)涂离型剂涂层:采用丙烯酸树脂,用脂类溶剂融合,形成固含量为25%的可流动性液体,采用凹版印刷的方式涂布在哑光层上,使用的网版网线为120~140线/英寸,涂布机车速为30~50m/min,涂布完成后在60~70℃的恒温烘箱下烘干。
7.根据权利要求6所述的局部哑光耐高温离型纸的制备方法,其特征在于,所述网纹辊上雕刻150~200目的哑面花纹版线。
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Denomination of invention: A locally matte high-temperature resistant release paper and its preparation method Granted publication date: 20200428 Pledgee: Jiangsu Taicang Rural Commercial Bank Co.,Ltd. Liuhe Branch Pledgor: JIXIANGBAO (TAICANG) MOLD MATERIAL SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2024980004333 |