CN110318301A - 一种荧光板材及其制备方法 - Google Patents
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Abstract
本发明涉及一种荧光板材及其制备方法,该荧光板材包括基板,基板的外侧包覆经三聚氰胺‑甲醛‑荧光剂混合溶液处理过的装饰纸;所述装饰纸的表面包覆电子束固化涂层;装饰纸浸渍三聚氰胺‑甲醛‑荧光剂混合溶液,可吸收入射光线产生荧光,荧光剂可吸收不可见的紫外线辐射并转变成紫蓝色的荧光辐射,与原有的黄光辐射互为补色成为白光,使所染物质获得类似荧石的闪闪发光的效应,使肉眼看到的物质很白,达到增白的效果,提高荧光板材在日光下的白度。
Description
技术领域
本发明涉及板材技术领域,特别是一种荧光板材及其制备方法。
背景技术
荧光板材在保龄球道、交通指示牌等场所有着广泛的应用,由于上述应用场景不但要求板材反光,同时需要耐磨、抗污,由于抗倍特板具有优异的稳定性,且易于清洗维护,因此抗倍特板具备应用在保龄球道、交通指示牌领域的基础,但现有技术的抗倍特板不具备荧光特性,因此提供一种耐磨、抗污的荧光板材是本领域技术人员急需解决的技术问题。
发明内容
本发明要解决的技术问题是提供一种耐磨、抗污的荧光板材及其制备方法。
为解决上述技术问题,本发明提供的荧光板材,包括:基板,基板的外侧包覆经三聚氰胺-甲醛-荧光剂混合溶液处理过的装饰纸;所述装饰纸的表面包覆电子束固化涂层,所述电子束固化涂层由以下原料按重量百分比组成:聚氨酯丙烯酸8%,环氧丙烯酸70%,共交联剂 20%,偶联剂 0.5%,流平剂0.5%,分散剂1%。
进一步,所述三聚氰胺-甲醛-荧光剂混合溶液由60重量份的三聚氰胺、100重量份的甲醛、5重量份的荧光剂、1重量份的碱液、34重量份的水混合而成,其中碱液的浓度为30%,其制作方法为:先往反应釜中投放甲醛及水,用碱液调PH值至8.0以上,然后加入三聚氰胺、荧光剂;搅拌均匀后升温至90℃,然后在该温度下保温,整个过程PH值不低于8.0,14-18秒后迅速降至室温,获得三聚氰胺-甲醛-荧光剂混合溶液。
进一步,所述共交联剂为三羟甲基丙烷三丙烯酸酯,获得的电子束固化涂层耐冲击效果更佳。
上述荧光板材的制备方法,包括如下步骤:
A、电子束固化涂层树脂准备:将以下原料按重量百分比加入搅拌器中,其中聚氨酯丙烯酸8%,环氧丙烯酸70%,共交联剂 20%,偶联剂 0.5%,流平剂0.5%,分散剂1%。
B、将装饰纸浸渍三聚氰胺-甲醛-荧光剂混合溶液,并烘干复卷,确保得到的装饰纸克重均匀,表面光滑,印刷油墨耐晒等级不低于6级。
C、涂胶固化,采取滚涂或涂淋方式把步骤A中的电子束固化涂层树脂涂到步骤B所得的浸渍后的装饰纸上,涂层厚度为0.15至0.20mm,并通过电子束固化设备进行固化,获得表面涂覆有电子束固化涂层的装饰纸。
D、将多层含浸三聚氰胺-甲醛树脂的牛皮纸层叠生成基板,或采用酚荃胶水制成的纤维板基材获得基板。
E、将步骤C获得的装饰纸贴在步骤D获得的基板的表面,并送入热压机进行热压固化,热压温度为145℃至155℃,压力不低于9.5MPa,热压时间为不低于35分钟,采取冷进冷出方式,获得表面包覆有电子束固化涂层的荧光板材。
进一步,所述步骤B中,装饰纸浸渍前的克重为70至130克/平方米,浸渍上胶量为50至150克/平方米,挥发份2-4%,确保装饰纸浸渍均匀。
进一步,所述步骤E中,先升温至45℃至55℃对装饰纸进行预热,使得基板的三聚氰胺-甲醛树脂或酚荃胶水融化,保持压板压力的同时再次升温使得温度缓缓升至145℃至155℃,保温预定时间后降温至常温,撤去压板,与传统的一次加压到底再升温的热压方式相比,可有效避免装饰纸破裂,成才率高。
发明的技术效果:(1)本发明的荧光板材,相对于现有技术,通过在荧光板材表面装饰纸上敷设电子束固化涂层,电子束固化涂层树脂包括聚氨酯丙烯酸、环氧丙烯酸、共交联剂、偶联剂、流平剂、分散剂并通过物理共混法将其混合,获得电子束固化涂层树脂,使得荧光板材的表面强度大幅提升;(2)将电子束固化技术用到荧光板材上面,可改善荧光板材表面性能,其表面具有自清洁能力、耐指纹能力,这些都是普通抗倍特板做不到的;由于电子束固化涂层的特点,电子束固化涂层产品具有很强的耐抗性,同时因涂层中的化学物质是通过交联反应而形成的高分子立体网状聚合物,所以涂层表面具有很强的耐化学性能和耐摩擦性能;(3)装饰纸浸渍三聚氰胺-甲醛-荧光剂混合溶液,可吸收入射光线产生荧光,荧光剂可吸收不可见的紫外线辐射并转变成紫蓝色的荧光辐射,与原有的黄光辐射互为补色成为白光,使所染物质获得类似荧石的闪闪发光的效应,使肉眼看到的物质很白,达到增白的效果,提高荧光板材在日光下的白度;(4)热压定型时,先预热升温至50℃左右,使得基板上的胶水融化后再进行加压,与传统的一次加压到底再升温的热压方式相比,可有效避免装饰纸破裂,成才率高,同时可避免因温度急剧变化影响电子束固化涂层。
附图说明
下面结合说明书附图对本发明作进一步详细说明:
图1是本发明实施例1的荧光板材的剖面结构示意图。
图中:基板1,装饰纸2,电子束固化涂层3。
具体实施方式
实施例1
如图1所示,本实施例的荧光板材包括基板1,基板1的外侧包覆经三聚氰胺-甲醛-荧光剂混合溶液处理过的装饰纸2;装饰纸2包覆在基板1之前经电子束固化一层电子束固化涂层3,该电子束固化涂层3由以下原料按重量百分比组成:聚氨酯丙烯酸8%,环氧丙烯酸70%,共交联剂 20%,偶联剂 0.5%,流平剂0.5%,分散剂1%,上述物料经搅拌混合获得电子束固化涂层树脂,其中共交联剂为三羟甲基丙烷三丙烯酸酯;三聚氰胺-甲醛-荧光剂混合溶液由60重量份的三聚氰胺、100重量份的甲醛、5重量份的荧光剂、1重量份的碱液、34重量份的水混合而成,其中碱液的浓度为30%,其制作方法为:先往反应釜中投放甲醛及水,用碱液调PH值至8.0以上,然后加入三聚氰胺、荧光剂;搅拌均匀后升温至90℃,然后在该温度下保温,整个过程PH值不低于8.0,14-18秒后迅速降至室温,获得三聚氰胺-甲醛-荧光剂混合溶液。
实施例2
实施例1的荧光板材的制造方法,包括如下步骤:
A、电子束固化涂层树脂准备:将以下原料按重量百分比加入搅拌器中,其中聚氨酯丙烯酸8%,环氧丙烯酸70%,共交联剂 20%,偶联剂 0.5%,流平剂0.5%,分散剂1%,开动搅拌器并加热到50℃,搅拌均匀,抽真空,获得电子束固化涂层树脂溶液。
B、将装饰纸浸渍三聚氰胺-甲醛-荧光剂混合溶液,并烘干复卷,确保得到的装饰纸克重均匀,表面光滑,印刷油墨耐晒等级不低于6级。
C、涂胶固化,采取滚涂或涂淋方式把步骤A中的电子束固化涂层树脂涂到步骤B所得的浸渍后的装饰纸上,涂层厚度为0.15至0.20mm,并通过电子束固化设备进行固化,获得表面涂覆有电子束固化涂层的装饰纸。
D、将多层含浸三聚氰胺-甲醛树脂的牛皮纸层叠生成基板,或采用酚荃胶水制成的纤维板基材获得基板。
E、将步骤C获得的装饰纸贴在步骤D获得的基板的表面,并送入热压机进行热压固化,热压温度为145℃至155℃,压力不低于9.5MPa,热压时间为不低于35分钟,采取冷进冷出方式,获得表面包覆有电子束固化涂层的荧光板材。
其中步骤B中,装饰纸浸渍前的克重105克/平方米,浸渍上胶量为95克/平方米,挥发份3.5%,印刷油墨耐晒等级为7级,确保装饰纸浸渍均匀。
步骤C中,涂层厚度为0.18mm;步骤D中,基板由三聚氰胺-甲醛树脂浸渍的牛皮纸制成。
步骤E中,先升温至50℃对装饰纸进行预热,使得基板的三聚氰胺-甲醛树脂融化,保持压板压力的同时再次升温使得温度缓缓升至150℃,压力维持至9.5MPa,保温35分钟后降温至常温,撤去压板,与传统的一次加压到底再升温的热压方式相比,可有效避免装饰纸破裂,成才率高。
该方法获得的荧光板材按照国标GB/T 17657-2013“人造板及饰面人造板理化性能试验方法”(4.41 表面耐污染性能测定——方法2中室温24h测试条件)、进行耐污检验,获得的结果参见表1,并根据GB/T 7911-2013“热固性树脂浸渍纸高压装饰层积板”进行了物理性能检验,获得的结果参见表2。
实施例3
一种荧光板材的制造方法,在实施例2的基础上,本实施例的制造方法存在如下区别:
步骤B中,装饰纸浸渍前的克重115克/平方米,浸渍上胶量为105克/平方米,挥发份2.0%,印刷油墨耐晒等级为7级,确保装饰纸浸渍均匀。
步骤C中,涂层厚度为0.15mm;步骤D中,基板由酚荃胶水浸渍的纤维板基材制成。
步骤E中,先升温至45℃对装饰纸进行预热,使得基板的酚醛胶水融化,保持压板压力的同时再次升温使得温度缓缓升至145℃,压力维持至10.0MPa,保温40分钟后降温至常温,撤去压板,与传统的一次加压到底再升温的热压方式相比,可有效避免装饰纸破裂,成才率高。
该方法获得的荧光板材按照国标GB/T 17657-2013“人造板及饰面人造板理化性能试验方法”(4.41 表面耐污染性能测定——方法2中室温24h测试条件)进行检验,获得的结果参见表1,并根据GB/T 7911-2013“热固性树脂浸渍纸高压装饰层积板”进行了物理性能检验,获得的结果参见表2。
实施例4
一种荧光板材的制造方法,在实施例2的基础上,本实施例的制造方法存在如下区别:
步骤B中,装饰纸浸渍前的克重85克/平方米,浸渍上胶量为75克/平方米,挥发份2.5%,印刷油墨耐晒等级为7级,确保装饰纸浸渍均匀。
步骤C中,涂层厚度为0.20mm;步骤D中,基板由酚荃胶水浸渍的纤维板基材制成。
步骤E中,先升温至55℃对装饰纸进行预热,使得基板的酚醛胶水融化,保持压板压力的同时再次升温使得温度缓缓升至155℃,压力维持至9.5MPa,保温35分钟后降温至常温,撤去压板,与传统的一次加压到底再升温的热压方式相比,可有效避免装饰纸破裂,成才率高。
该方法获得的荧光板材按照国标GB/T 17657-2013“人造板及饰面人造板理化性能试验方法”(4.41 表面耐污染性能测定——方法2中室温24h测试条件)进行检验,获得的结果参见表1,并根据GB/T 7911-2013“热固性树脂浸渍纸高压装饰层积板”进行了物理性能检验,获得的结果参见表2。
实施例5
一种荧光板材的制造方法,在实施例2的基础上,本实施例的制造方法存在如下区别:
步骤B中,装饰纸浸渍前的克重90克/平方米,浸渍上胶量为140克/平方米,挥发份2.5%,印刷油墨耐晒等级为8级,确保装饰纸浸渍均匀。
步骤C中,涂层厚度为0.16mm;步骤D中,基板由三聚氰胺-甲醛树脂浸渍的牛皮纸制成。
步骤E中,先升温至50℃对装饰纸进行预热,使得基板的三聚氰胺-甲醛胶水融化,保持压板压力的同时再次升温使得温度缓缓升至150℃,压力维持至9.5MPa,保温35分钟后降温至常温,撤去压板,与传统的一次加压到底再升温的热压方式相比,可有效避免装饰纸破裂,成才率高。
该方法获得的荧光板材按照国标GB/T 17657-2013“人造板及饰面人造板理化性能试验方法”(4.41 表面耐污染性能测定——方法2中室温24h测试条件)进行检验,获得的结果参见表1,并根据GB/T 7911-2013“热固性树脂浸渍纸高压装饰层积板”进行了物理性能检验,获得的结果参见表2。
表1 荧光板材 GB/T 17657-2013检验结果对照表
续表1 荧光板材 GB/T 17657-2013检验结果对照表
续表1 荧光板材 GB/T 17657-2013检验结果对照表
续表1 荧光板材 GB/T 17657-2013检验结果对照表
表2室外用耐候抗倍特板GB/T 7911‐2013检验结果对照表
通过对4个实施例所获得的荧光板材试样进行耐酸性腐蚀、耐碱性腐蚀、无机溶液腐蚀检测,最终结果都可以达到5级,表面无明显变化,耐污性能明显优于市面产品,且荧光剂的加入可提高荧光板材在日光下的白度,使得荧光板材适用于交通指示牌、保龄球道等场合;将电子束固化技术用到荧光板材上面,由于电子束固化涂层的特点,电子束固化涂层产品具有很强的耐抗性,同时因涂层中的化学物质是通过交联反应而形成的高分子立体网状聚合物,所以涂层表面具有很强的耐化学性能和耐摩擦性能,耐磨刻划转数超过标准值2倍以上,抗冲击性能优异,冲击后的凹痕直径不超过4mm。
显然,上述实施例仅仅是为清楚地说明本发明所作的举例,而并非是对本发明的实施方式的限定。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。而这些属于本发明的精神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 (6)
1.一种荧光板材,其特征在于,包括:基板,基板的外侧包覆经三聚氰胺-甲醛-荧光剂混合溶液处理过的装饰纸;所述装饰纸的表面包覆电子束固化涂层,所述电子束固化涂层由以下原料按重量百分比组成:聚氨酯丙烯酸8%,环氧丙烯酸70%,共交联剂 20%,偶联剂0.5%,流平剂0.5%,分散剂1%。
2.根据权利要求1所述的荧光板材,其特征在于,所述三聚氰胺-甲醛-荧光剂混合溶液由60重量份的三聚氰胺、100重量份的甲醛、5重量份的荧光剂、1重量份的碱液、34重量份的水混合而成,其中碱液的浓度为30%,其制作方法为:先往反应釜中投放甲醛及水,用碱液调PH值至8.0以上,然后加入三聚氰胺、荧光剂;搅拌均匀后升温至90℃,然后在该温度下保温,整个过程PH值不低于8.0,14-18秒后迅速降至室温,获得三聚氰胺-甲醛-荧光剂混合溶液。
3.根据权利要求1所述的荧光板材,其特征在于,所述共交联剂为三羟甲基丙烷三丙烯酸酯。
4.根据权利要求2所述的荧光板材的制备方法,其特征在于,包括如下步骤:
A、电子束固化涂层树脂准备:将以下原料按重量百分比加入搅拌器中,其中聚氨酯丙烯酸8%,环氧丙烯酸70%,共交联剂 20%,偶联剂 0.5%,流平剂0.5%,分散剂1%;
B、将装饰纸浸渍三聚氰胺-甲醛-荧光剂混合溶液,并烘干复卷,确保得到的装饰纸克重均匀,表面光滑,印刷油墨耐晒等级不低于6级;
C、涂胶固化,采取滚涂或涂淋方式把步骤A中的电子束固化涂层树脂涂到步骤B所得的浸渍后的装饰纸上,涂层厚度为0.15至0.20mm,并通过电子束固化设备进行固化,获得表面涂覆有电子束固化涂层的装饰纸;
D、将多层含浸三聚氰胺-甲醛树脂的牛皮纸层叠生成基板,或采用酚荃胶水制成的纤维板基材获得基板;
E、将步骤C获得的装饰纸贴在步骤D获得的基板的表面,并送入热压机进行热压固化,热压温度为145℃至155℃,压力不低于9.5MPa,热压时间为不低于35分钟,采取冷进冷出方式,获得表面包覆有电子束固化涂层的荧光板材。
5.根据权利要求4所述的荧光板材的制备方法,其特征在于,所述步骤B中,装饰纸浸渍前的克重为70至130克/平方米,浸渍上胶量为50至150克/平方米,挥发份2-4%。
6.根据权利要求5所述的荧光板材的制备方法,其特征在于,所述步骤E中,先升温至45℃至55℃对装饰纸进行预热,使得基板的三聚氰胺-甲醛树脂或酚荃胶水融化,保持压板压力的同时再次升温使得温度缓缓升至145℃至155℃,保温预定时间后降温至常温,撤去压板。
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