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CN110315832A - 一种室外用耐候抗倍特板及其制备方法 - Google Patents

一种室外用耐候抗倍特板及其制备方法 Download PDF

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CN110315832A
CN110315832A CN201810287624.4A CN201810287624A CN110315832A CN 110315832 A CN110315832 A CN 110315832A CN 201810287624 A CN201810287624 A CN 201810287624A CN 110315832 A CN110315832 A CN 110315832A
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孙学民
高聪民
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Abstract

本发明涉及一种室外用耐候抗倍特板及其制备方法,该室外用耐候抗倍特板包括基板,基板的外侧包覆经浸渍树脂处理过的装饰纸,所述装饰纸的表面包覆电子束固化涂层;通过在抗倍特表面装饰纸上敷设电子束固化涂层,获得的抗倍特板耐高温、耐沸水、耐冲击,具有更优异的耐候性,可以更好的适应室外环境,使得抗倍特板的适用范围大为扩大;将电子束固化技术用到抗倍特上面,可改善抗倍特板表面耐强酸强碱及溶剂能力;做到普通抗倍特做不到户外耐紫外线,耐气候的能力。

Description

一种室外用耐候抗倍特板及其制备方法
技术领域
本发明涉及建筑装饰材料技术领域,特别是一种室外用耐候抗倍特板及其制备方法。
背景技术
抗倍特板具有优异的稳定性,且易于清洗维护,因而适用范围极广,抗倍特板被广泛应用于学校、医院、机场、车站、酒店、商场、办公楼等大型公共场所,生活中的厨具台面、盥洗台面、餐桌、书桌、门扇,公共空间的浴厕隔间、洗手台、接待柜台、置物柜、天花板、办公桌与办公隔间等。
现有技术中,抗倍特板作为一种木制纤维与热固树脂经高压聚合制成的高强平板,具有明显的层叠结构,具体是采用酚醛树脂处理过的牛皮纸热压胶接获得基板,并在基板的两侧热压胶接经三聚氰胺处理过的装饰纸,获得完整的抗倍特板材,由于装饰纸与基板的结合采用的是热压胶接,因此上述板材的耐候性能较差,在室外长时间使用时容易造成装饰纸脱落,影响产品质量和美观程度。
发明内容
本发明要解决的技术问题是提供一种成本低廉、易于制作的室外用耐候抗倍特板及其制备方法。
为解决上述技术问题,本发明提供的室外用耐候抗倍特板,包括:基板,基板的外侧包覆经浸渍树脂处理过的装饰纸,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50%,环氧丙烯酸7%,共交联剂15%,己二醇二丙烯酸酯15%,光稳定剂1%,阻燃剂3%,紫外线吸收剂2%,抗氧化剂5%,偶联剂0.5%,流平剂0.5%,分散剂1%。
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。
进一步,所述光稳定剂为为受阻胺类光稳定剂,其与聚合物有较好的相容性,不着色,耐水解。
上述室外用耐候抗倍特板的制备方法,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50%,环氧丙烯酸7%,共交联剂15%,己二醇二丙烯酸酯15%,光稳定剂1%,阻燃剂3%,紫外线吸收剂2%,抗氧化剂5%,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、将装饰纸浸渍树脂,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抗倍特板。
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B中,浸渍的树脂为三聚氰胺-甲醛树脂与苯酚-甲醛树脂的混合物,其中三聚氰胺-甲醛树脂所占质量百分比为40%至60%,确保浸渍后的装饰纸保有韧性,同时与电子束固化涂层树脂保持亲和力。
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)本发明的室外用耐候抗倍特板,相对于现有技术,通过在抗倍特表面装饰纸上敷设电子束固化涂层,获得的抗倍特板耐高温、耐沸水、耐冲击,具有更优异的耐候性,可以更好的适应室外环境,使得抗倍特板的适用范围大为扩大;(2)将电子束固化技术用到抗倍特上面,可改善抗倍特板表面耐强酸强碱及溶剂能力;做到普通抗倍特做不到户外耐紫外线,耐气候的能力;且获得的抗倍特板表面有自清洁能力、耐指纹能力,这些都是普通抗倍特板做不到的,另外其表面耐磨耐刮性能大大提高;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)采用特定比例的聚氨酯丙烯酸、环氧丙烯酸、共交联剂、己二醇二丙烯酸酯、光稳定剂、阻燃剂、紫外线吸收剂、抗氧化剂、偶联剂、流平剂、分散剂制得电子束固化涂层树脂,尤其是抗氧化剂的存在,可有效提高抗倍特板的耐候性;(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的室外用耐候抗倍特板的剖面结构示意图。
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,本实施例的室外用耐候抗倍特板包括基板,基板的外侧包覆经浸渍树脂处理过的装饰纸,装饰纸包覆在基板之前经电子束固化一层电子束固化涂层,该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50%,环氧丙烯酸7%,共交联剂15%,己二醇二丙烯酸酯15%,光稳定剂1%,阻燃剂3%,紫外线吸收剂2%,抗氧化剂5%,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,光稳定剂为为受阻胺类光稳定剂。
实施例2
实施例1的室外用耐候抗倍特板的制造方法,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50%,环氧丙烯酸7%,三羟甲基丙烷三丙烯酸酯15%,己二醇二丙烯酸酯15%,受阻胺类光稳定剂1%,阻燃剂3%,紫外线吸收剂2%,抗氧化剂5%,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、将装饰纸浸渍树脂,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抗倍特板。
其中步骤B中,装饰纸浸渍前的克重90克/平方米,浸渍上胶量为100克/平方米,挥发份4%,印刷油墨耐晒等级为7级,确保装饰纸浸渍均匀。
步骤B中,浸渍的树脂为三聚氰胺-甲醛树脂与苯酚-甲醛树脂的混合物,其中三聚氰胺-甲醛树脂所占质量百分比为40%,苯酚-甲醛树脂所占质量百分比为60%,确保浸渍后的装饰纸保有韧性,同时与电子束固化涂层树脂保持亲和力。
步骤C中, 涂层厚度为0.15mm;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55℃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。
该方法获得的室外用耐候抗倍特板按照国标GB/T 7911-2013“热固性树脂浸渍纸高压装饰层积板”进行了检测,获得的结果参见表1。
实施例3
一种室外用耐候抗倍特板的制造方法,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100克/平方米,浸渍上胶量为75克/平方米,挥发份3%,印刷油墨耐晒等级为8级,确保装饰纸浸渍均匀。
步骤B中,浸渍的树脂为三聚氰胺-甲醛树脂与苯酚-甲醛树脂的混合物,其中三聚氰胺-甲醛树脂所占质量百分比为50%,苯酚-甲醛树脂所占质量百分比为50%,确保浸渍后的装饰纸保有韧性,同时与电子束固化涂层树脂保持亲和力。
步骤C中, 涂层厚度为0.17mm;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50℃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150℃,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。
该方法获得的室外用耐候抗倍特板按照国标GB/T 7911-2013“热固性树脂浸渍纸高压装饰层积板”进行了检测,获得的结果参见表1。
实施例4
一种室外用耐候抗倍特板的制造方法,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130克/平方米,浸渍上胶量为150克/平方米,挥发份2%,印刷油墨耐晒等级为6级,确保装饰纸浸渍均匀。
步骤B中,浸渍的树脂为三聚氰胺-甲醛树脂与苯酚-甲醛树脂的混合物,其中三聚氰胺-甲醛树脂所占质量百分比为60%,苯酚-甲醛树脂所占质量百分比为40%,确保浸渍后的装饰纸保有韧性,同时与电子束固化涂层树脂保持亲和力。
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。
该方法获得的室外用耐候抗倍特板按照国标GB/T 7911-2013“热固性树脂浸渍纸高压装饰层积板”进行了检测,获得的结果参见表1。
实施例5
一种室外用耐候抗倍特板的制造方法,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70克/平方米,浸渍上胶量为120克/平方米,挥发份3%,印刷油墨耐晒等级为7级,确保装饰纸浸渍均匀。
步骤B中,浸渍的树脂为三聚氰胺-甲醛树脂与苯酚-甲醛树脂的混合物,其中三聚氰胺-甲醛树脂所占质量百分比为50%,苯酚-甲醛树脂所占质量百分比为50%,确保浸渍后的装饰纸保有韧性,同时与电子束固化涂层树脂保持亲和力。
步骤C中, 涂层厚度为0.20mm;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。
该方法获得的室外用耐候抗倍特板按照国标GB/T 7911-2013“热固性树脂浸渍纸高压装饰层积板”进行了检测,获得的结果参见表1。
表1 室外用耐候抗倍特板 GB/T 7911-2013检验结果对照表
4个实施例所获得的室外用耐候抗倍特板抗拉强度、弯曲强度均超出标准值20%以上,表面耐磨性能大为提高,超出标准值130%以上;耐干热性能均达到1级,表面无变化;尺寸稳定性、耐沸水性能同样可以满足标准要求;在室外耐候性的关键指标中,耐湿热、耐水蒸气、耐香烟灼烧性均可以达到1级,且表面无变化,明显优于现有市面产品。
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 (7)

1.一种室外用耐候抗倍特板,其特征在于,包括:基板,基板的外侧包覆经浸渍树脂处理过的装饰纸,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50%,环氧丙烯酸7%,共交联剂15%,己二醇二丙烯酸酯15%,光稳定剂1%,阻燃剂3%,紫外线吸收剂2%,抗氧化剂5%,偶联剂0.5%,流平剂0.5%,分散剂1%。
2.根据权利要求1所述的室外用耐候抗倍特板,其特征在于,所述共交联剂为三羟甲基丙烷三丙烯酸酯。
3.根据权利要求1所述的室外用耐候抗倍特板,其特征在于,所述光稳定剂为为受阻胺类光稳定剂。
4.根据权利要求1所述的室外用耐候抗倍特板的制备方法,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50%,环氧丙烯酸7%,共交联剂15%,己二醇二丙烯酸酯15%,光稳定剂1%,阻燃剂3%,紫外线吸收剂2%,抗氧化剂5%,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、将装饰纸浸渍树脂,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抗倍特板。
5.根据权利要求4所述的室外用耐候抗倍特板的制备方法,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所述的室外用耐候抗倍特板的制备方法,其特征在于,所述步骤B中,浸渍的树脂为三聚氰胺-甲醛树脂与苯酚-甲醛树脂的混合物,其中三聚氰胺-甲醛树脂所占质量百分比为40%至60%。
7.根据权利要求5所述的室外用耐候抗倍特板的制备方法,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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