CN112743937A - 一种抗静电印花有机彩色涂层钢板及其制备方法 - Google Patents
一种抗静电印花有机彩色涂层钢板及其制备方法 Download PDFInfo
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Abstract
一种抗静电印花有机彩色涂层钢板包括正面依次设置的钢板基体、化涂层、底漆层、抗静电彩涂层、热转印层和保护膜,背面设置钢板基体、化涂层、底漆层;所述化涂层为厚度为1‑2μm的无铬网状化学转化膜层;所述底漆层为添加聚氨酯涂料的厚范围为3~5μm;所述抗静电彩涂层采用添加导电填料的涂料,厚度为7‑10μm;正面图层的厚度为15‑25μm,背面图层的厚度小于等于7μm,通过在抗静电彩涂层的涂料中添加导电钛白粉和炭黑来实现彩涂钢板由白色向黑色的过度,实现涂层在保持原有彩涂钢板基本性能和各种浅色装饰的基础上,利用涂料中的导电填料相互接触形成导电网络,并通过自由电子沿外加电场方向移动形成电流,从而使彩涂钢板实现防静电效果。
Description
技术领域
本发明涉及印花彩色涂层钢板技术领域,具体涉及一种抗静电印花有机彩色涂层钢板及其制备方法。
背景技术
彩色涂层钢板是一种复合材料,主要由基板和涂料组成,兼有钢板和有机材料两者的优点,既有钢板的机械强度和易成型的性能,又有有机材料良好的装饰性、耐腐蚀性、美观等优点,起到了以钢代木、高效施工、节约能源等良好效果,因而成为建筑业、造船业、家具行业、车辆制造业、电气行业的新型装饰材料。目前,彩色涂层钢板主要是以冷轧钢板、电镀锌钢板或热镀钢板为基板,经表面脱脂、磷化、络酸盐处理后,相继辊涂各种有机涂料经烘烤而制成的产品。涂层可采用聚酯、硅性树脂、氟树脂等,彩色涂层钢板的强度主要取决于基板材料和厚度,耐久性主要取决于镀层(镀锌量318g/m2)和表面涂层。
发明专利:一种彩涂板的生产方法(专利号:200910187777.2)介绍了一种彩涂板生产方法,先将待涂基材进行脱脂、清洗、磷化、清洗处理,然后将前处理后的待涂基材作为阴极浸入电泳槽中进行电泳涂装,电泳电压100~350V,时间1~3分钟;涂装后进行清洗、烘干,再喷或涂面漆,制得彩涂板。但是其过程所需设备复杂,投资费用高,耗电量大,还要进行废水处理,成本高,对环境存在威胁。
目前主要使用的还是传统的两涂两烘的产品。发明专利:一种多用途彩涂板及其制备方法(申请号:200610041448.3)方法包括下列步骤:a、基板清洗;b、钝化、干燥;c、涂正面底漆/背面漆;d、烘烤固化、冷却;e、涂正面面漆、烘烤固化、冷却;f、卷取、检验入库。传统在表面效果较差,使用寿命较短、表面光泽度低、耐腐蚀性差、抗污性差、抗静电能力差,需要经常冲洗保持彩涂板的洁净。
发明内容
为了解决现有的技术问题,本发明提供了一种抗静电印花有机彩色涂层钢板及其制备方法,通过在抗静电彩涂层的涂料中添加导电钛白粉和炭黑来实现彩涂钢板由白色向黑色的过度,实现涂层在保持原有彩涂钢板基本性能和各种浅色装饰要求的基础上,利用涂料中的导电填料相互接触形成导电网络,并通过自由电子沿外加电场方向移动形成电流,从而使彩涂钢板实现防静电效果。
本发明的技术方案是:一种抗静电印花有机彩色涂层钢板包括正面依次设置的钢板基体、化涂层、底漆层、抗静电彩涂层、热转印层和保护膜,背面设置钢板基体、化涂层、底漆层;所述化涂层为厚度为1-2μm的无铬网状化学转化膜层;所述底漆层为添加聚氨酯涂料的厚范围为3~5μm;所述抗静电彩涂层采用添加导电填料的涂料,厚度为7-10μm;正面图层的厚度为15-25μm,背面图层的厚度小于等于7μm。
进一步说,所述抗静电彩涂层采用添加导电钛白粉和炭黑来实现彩涂钢板由白色向黑色的过度,实现涂层在保持原有彩涂钢板基本性能和各种浅色装饰要求的基础上,利用涂料中的导电填料相互接触形成导电网络,并通过自由电子沿外加电场方向移动形成电流,从而使彩涂钢板实现防静电效果。
进一步说,所述保护膜为聚氟乙烯膜,所述聚氟乙烯膜厚度为10-15μm,聚氟乙烯薄膜可不受油脂、有机溶剂、碱类、酸类和盐雾的侵蚀,电绝缘性能良好,还具有良好的低温性能、耐磨性和气体阻透性。
上述抗静电印花有机彩色涂层钢板的制备方法,包括如下步骤:
S1:选用冷轧或热镀锌钢板作基材,开卷,缝合,对基材的双面进行碱洗处理,清洗钢板,除去钢板表面附着的锈斑和灰尘,烘干,在钢板上下两侧镀锌形成热镀锌钢板或镀铝形成热镀铝钢板;
S2:将S1得到的热镀铝钢板双面辊涂化涂料,形成化涂层,进入120℃-160℃干燥箱热风烘烤30-40s,涂化涂料采用镀锌环保钝化剂,量浓度优选为30%-50%;
S3:将S2得到的钢板正反面涂底漆,对底漆进行烘烤固化,进入110℃-130℃干燥箱热风烘烤10-20s,烘烤固化完毕后,对钢板进行冷却;
S4:将S3得到的钢板的正面涂覆调制好的抗静电彩色涂料,进入150℃-190℃干燥箱热风烘烤24-29s,后将聚氟乙烯膜和涂好抗静电彩色涂料的钢板送入上下覆合辊中间,使薄膜在上下辊的压力和高温的作用下与钢板上侧贴覆在一起;
S5:将S4得到的钢板的正面通过热转印及一次加工将热转印膜转印至面漆层上,形成热转印层;
S6:将S5得到的钢板的正面涂覆一层保护膜,后在固化炉内烘烤,烘烤温度为260~280℃,烘烤时间为10-15s,后将固化的钢板进行水冷,即得到抗静电印花有机彩色涂层钢板。
采用上述技术方案,本发明实现的有益效果如下:
(1)本发明采用化涂层的设计增强了金属基板的耐蚀性,同时也提高了金属基板的附着力;底漆层能进一步增强金属基板的耐蚀性,同时也提高了金属基板的平整度;抗静电彩涂层。
(2)本发明采用抗静电彩涂层的涂料中添加导电钛白粉和炭黑来实现彩涂钢板由白色向黑色的过度,实现涂层在保持原有彩涂钢板基本性能和各种浅色装饰要求的基础上,利用涂料中的导电填料相互接触形成导电网络,并通过自由电子沿外加电场方向移动形成电流,从而使彩涂钢板实现防静电效果。
(3)本发明抗静电印花彩涂钢板,既具有印花彩涂钢板的优良性能,又具有抗静电性能,电阻值为106-109Ω,电阻率≥4×10-5Ω·cm。
具体实施方式
下面结合具体实施例对本发明作进一步详细的说明。
实施例1
一种抗静电印花有机彩色涂层钢板包括正面依次设置的钢板基体、化涂层、底漆层、抗静电彩涂层、热转印层和保护膜,背面设置钢板基体、化涂层、底漆层;所述化涂层为厚度为2μm的无铬网状化学转化膜层;所述底漆层为添加聚氨酯涂料的厚范围为4μm;所述抗静电彩涂层采用添加导电填料的涂料,厚度为8μm;正面图层的厚度为25μm,背面图层的厚度为6μm。
所述抗静电彩涂层采用添加导电钛白粉和炭黑来实现彩涂钢板由白色向黑色的过度,实现涂层在保持原有彩涂钢板基本性能和各种浅色装饰要求的基础上,利用涂料中的导电填料相互接触形成导电网络,并通过自由电子沿外加电场方向移动形成电流,从而使彩涂钢板实现防静电效果。
所述保护膜为聚氟乙烯膜,所述聚氟乙烯膜厚度为10μm,聚氟乙烯薄膜可不受油脂、有机溶剂、碱类、酸类和盐雾的侵蚀,电绝缘性能良好,还具有良好的低温性能、耐磨性和气体阻透性。
上述抗静电印花有机彩色涂层钢板的制备方法,包括如下步骤:
S1:选用冷轧或热镀锌钢板作基材,开卷,缝合,对基材的双面进行碱洗处理,清洗钢板,除去钢板表面附着的锈斑和灰尘,烘干,在钢板上下两侧镀锌形成热镀锌钢板或镀铝形成热镀铝钢板;
S2:将S1得到的热镀铝钢板双面辊涂化涂料,形成化涂层,进入140℃干燥箱热风烘烤30s,涂化涂料采用镀锌环保钝化剂,量浓度优选为40%;
S3:将S2得到的钢板正反面涂底漆,对底漆进行烘烤固化,进入130℃干燥箱热风烘烤10-20s,烘烤固化完毕后,对钢板进行冷却;
S4:将S3得到的钢板的正面涂覆调制好的抗静电彩色涂料,进入190℃干燥箱热风烘烤24s,后将聚氟乙烯膜和涂好抗静电彩色涂料的钢板送入上下覆合辊中间,使薄膜在上下辊的压力和高温的作用下与钢板上侧贴覆在一起;
S5:将S4得到的钢板的正面通过热转印及一次加工将热转印膜转印至面漆层上,形成热转印层;
S6:将S5得到的钢板的正面涂覆一层保护膜,后在固化炉内烘烤,烘烤温度为260℃,烘烤时间为10s,后将固化的钢板进行水冷,即得到抗静电印花有机彩色涂层钢板。
实施例2
一种抗静电印花有机彩色涂层钢板包括正面依次设置的钢板基体、化涂层、底漆层、抗静电彩涂层、热转印层和保护膜,背面设置钢板基体、化涂层、底漆层;所述化涂层为厚度为1μm的无铬网状化学转化膜层;所述底漆层为添加聚氨酯涂料的厚范围为3μm;所述抗静电彩涂层采用添加导电填料的涂料,厚度为7μm;正面图层的厚度为23μm,背面图层的厚度小于等于4μm。
进一步说,所述抗静电彩涂层采用添加导电钛白粉和炭黑来实现彩涂钢板由白色向黑色的过度,实现涂层在保持原有彩涂钢板基本性能和各种浅色装饰要求的基础上,利用涂料中的导电填料相互接触形成导电网络,并通过自由电子沿外加电场方向移动形成电流,从而使彩涂钢板实现防静电效果。
所述保护膜为聚氟乙烯膜,所述聚氟乙烯膜厚度为11μm,聚氟乙烯薄膜可不受油脂、有机溶剂、碱类、酸类和盐雾的侵蚀,电绝缘性能良好,还具有良好的低温性能、耐磨性和气体阻透性。
上述抗静电印花有机彩色涂层钢板的制备方法,包括如下步骤:
S1:选用冷轧或热镀锌钢板作基材,开卷,缝合,对基材的双面进行碱洗处理,清洗钢板,除去钢板表面附着的锈斑和灰尘,烘干,在钢板上下两侧镀锌形成热镀锌钢板或镀铝形成热镀铝钢板;
S2:将S1得到的热镀铝钢板双面辊涂化涂料,形成化涂层,进入150℃干燥箱热风烘烤35,涂化涂料采用镀锌环保钝化剂,量浓度优选为45%;
S3:将S2得到的钢板正反面涂底漆,对底漆进行烘烤固化,进入115℃干燥箱热风烘烤13s,烘烤固化完毕后,对钢板进行冷却;
S4:将S3得到的钢板的正面涂覆调制好的抗静电彩色涂料,进入170℃干燥箱热风烘烤28s,后将聚氟乙烯膜和涂好抗静电彩色涂料的钢板送入上下覆合辊中间,使薄膜在上下辊的压力和高温的作用下与钢板上侧贴覆在一起;
S5:将S4得到的钢板的正面通过热转印及一次加工将热转印膜转印至面漆层上,形成热转印层;
S6:将S5得到的钢板的正面涂覆一层保护膜,后在固化炉内烘烤,烘烤温度为275℃,烘烤时间为13s,后将固化的钢板进行水冷,即得到抗静电印花有机彩色涂层钢板。
性能测试:
综上所见,本发明的抗静电印花有机彩色涂层钢板既具有彩涂钢板的优良性能,又具有抗静电耐磨的性能。
Claims (4)
1.一种抗静电印花有机彩色涂层钢板,其特征在于:包括正面依次设置的钢板基体、化涂层、底漆层、抗静电彩涂层、热转印层和保护膜,背面设置钢板基体、化涂层、底漆层;所述化涂层为厚度为1-2μm的无铬网状化学转化膜层;所述底漆层为添加聚氨酯涂料的厚范围为3~5μm;所述抗静电彩涂层采用添加导电填料的涂料,厚度为7-10μm;正面图层的厚度为15-25μm,背面图层的厚度小于等于7μm。
2.根据权利要求1所述的一种抗静电印花有机彩色涂层钢板,其特征在于:所述抗静电彩涂层采用添加导电钛白粉和炭黑来实现彩涂钢板由白色向黑色的过度,实现涂层在保持原有彩涂钢板基本性能和各种浅色装饰要求的基础上,利用涂料中的导电填料相互接触形成导电网络,并通过自由电子沿外加电场方向移动形成电流,从而使彩涂钢板实现防静电效果。
3.根据权利要求1所述的一种抗静电印花有机彩色涂层钢板,其特征在于:所述保护膜为聚氟乙烯膜,所述聚氟乙烯膜厚度为10-15μm,聚氟乙烯薄膜可不受油脂、有机溶剂、碱类、酸类和盐雾的侵蚀,电绝缘性能良好,还具有良好的低温性能、耐磨性和气体阻透性。
4.一种抗静电印花有机彩色涂层钢板的制备方法,其特征在于:包括如下步骤:
S1:选用冷轧或热镀锌钢板作基材,开卷,缝合,对基材的双面进行碱洗处理,清洗钢板,除去钢板表面附着的锈斑和灰尘,烘干,在钢板上下两侧镀锌形成热镀锌钢板或镀铝形成热镀铝钢板;
S2:将S1得到的热镀铝钢板双面辊涂化涂料,形成化涂层,进入120℃-160℃干燥箱热风烘烤30-40s,涂化涂料采用镀锌环保钝化剂,量浓度优选为30%-50%;
S3:将S2得到的钢板正反面涂底漆,对底漆进行烘烤固化,进入110℃-130℃干燥箱热风烘烤10-20s,烘烤固化完毕后,对钢板进行冷却;
S4:将S3得到的钢板的正面涂覆调制好的抗静电彩色涂料,进入150℃-190℃干燥箱热风烘烤24-29s,后将聚氟乙烯膜和涂好抗静电彩色涂料的钢板送入上下覆合辊中间,使薄膜在上下辊的压力和高温的作用下与钢板上侧贴覆在一起;
S5:将S4得到的钢板的正面通过热转印及一次加工将热转印膜转印至面漆层上,形成热转印层;
S6:将S5得到的钢板的正面涂覆一层保护膜,后在固化炉内烘烤,烘烤温度为260~280℃,烘烤时间为10-15s,后将固化的钢板进行水冷,即得到抗静电印花有机彩色涂层钢板。
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