CN104845471B - 一种基于纳米铜的防霉涂料 - Google Patents
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Abstract
一种基于纳米铜的防霉涂料,属于涂料技术领域。由重量份数的以下物质制成:有机硅改性丙烯酸树脂10‑30份、羧基丁苯胶乳20‑40份、端羧基聚脂树脂10‑25份、羟乙基甲基纤维素6‑15份、消泡剂3‑4份、粒径为30‑40nm的纳米铜1‑3份、GR复合钛白颜料6‑10份。上述一种基于纳米铜的防霉涂料,各组分的配比合理,纳米铜和GR复合钛白颜料与涂料中各种成分实现有机结合,原料易得,环保,对人体无害,防霉效果良好、持久,附着力强,成模性好,生产成本低。其施工工艺与原有的施工工艺相同,在防霉涂料使用的各种场合,能有效地防止各种细菌的滋生与繁殖。
Description
技术领域
本发明属于涂料技术领域,具体为一种基于纳米铜的防霉涂料。
背景技术
防霉涂料除了有与其他普通涂料一样的功能外最主要的就是能防霉防腐蚀,所以一般作用于钢筋、水泥、玻璃钢、陶瓷、搪瓷、水管、木材等制品表面防护与装饰,起到防霉防腐蚀的作用。但最常用的事涂在建筑表面,使建筑物表层不易受霉菌腐蚀导致涂膜开裂和剥落。一些特殊的生产企业,如制药、啤酒、豆制品、乳制品、酿造、皮革、化妆品等,由于产品营养丰富,生产环境湿热,生产环境的温度和湿度非常适合霉菌的生长、繁殖。因此发霉情况相当严重,尤其是生产车间的内墙和天花板,一些包装车间及仓库甚至生产设备,也有不同程度的发霉情况。在这样的环境中生产和储存的产品, 无疑会受到不同程度的污染,给人们身体健康带来潜在危害,工厂也往往因此而被迫停产。因此, 医药和食品的GMP标准都对厂房的墙面及顶棚的防霉问题提出了要求。采用防霉涂料对生产车间的墙面、顶棚和设备进行适当的涂装,是一种既经济又实用的防霉方法。现有涂料采用添加铜粉进行防霉,但是由于铜粉的粒度太大,防霉效果不够显著。
发明内容
针对现有技术中存在的上述问题,本发明的内容在于设计提供一种具有优良防霉效果的基于纳米铜的防霉涂料的技术方案,各组分的配比合理,防霉效果持久,附着力强,成模性好。
所述的一种基于纳米铜的防霉涂料,其特征在于由重量份数的以下物质制成:有机硅改性丙烯酸树脂10-30份、羧基丁苯胶乳20-40份、端羧基聚脂树脂10-25份、羟乙基甲基纤维素6-15份、消泡剂3-4份、粒径为30-40nm的纳米铜1-3份、GR复合钛白颜料6-10份。
所述的一种基于纳米铜的防霉涂料,其特征在于有机硅改性丙烯酸树脂12-25份、羧基丁苯胶乳22-35份、端羧基聚脂树脂12-20份、羟乙基甲基纤维素8-12份、消泡剂3.5份、纳米铜2份、GR复合钛白颜料7-8份。
所述的一种基于纳米铜的防霉涂料,其特征在于有机硅改性丙烯酸树脂15-20份、羧基丁苯胶乳25-30份、端羧基聚脂树脂15-18份、羟乙基甲基纤维素9-10份、消泡剂3.5份、纳米铜2份、GR复合钛白颜料7.5份。
所述的有机硅改性丙烯酸树脂具有优良的附着力,耐冲击性和柔韧性,卓越的耐候性和保色保光性,手感滑爽,耐沾污,耐划伤性好,突出的耐热性,可长期经受200℃的工作温度。
所述的羧基丁苯胶乳,具有较高的粘结力和结膜强度,机械及化学稳定性好,流动性、贮存稳定性均佳,填充量大等优点。残留苯类单体甚微,属环保型产品。
所述的端羧基聚脂树脂具有较低的粘度、较高的反应活性、低放热、优良的力学性能以及常温固化等特点。
所述的羟乙基甲基纤维素,溶于水及部分有机溶剂,粘度愈低,溶解度愈大;在水溶液中比较稳定,但过量的添加电解质,可引起凝胶和沉淀;由于水溶液具有表面活性功能,可作为胶体保护剂,乳化剂和分散剂;具有比较好的抗霉能力,在长期储存时有良好的粘度稳定性;产品水溶液的粘度几乎不受酸或碱的影响,PH值在3.0-11.0的范围内比较稳定;由于产品的高浓缩水溶液与其它聚合物的水溶液相比具有特殊的粘弹性能,它的加入有改善挤压陶瓷制品的形状不变的能力等。
所述的铜粉可与真菌类繁殖所需的氨基发生反应,从而发挥防霉效果。铜在水溶性环境中不会溶出,因此与其它防霉剂相比效果更加持久。所用铜粉颗粒的大小、形状对涂料的使用性能有影响。粒径越小,使用效果越好;粒径过大,其效果低劣。申请人经过研究发现,纳米铜的粒径越小,则防霉性能越好。纳米铜可以采用常规纳米金属的制备方法制得,也可以从市场上直接购得。
在涂料体系中使用GR复合钛白颜料可得与钛白粉相同或相近的性能指标;GR复合钛白颜料可广泛应用于涂料体系中,改善涂料的性能,较大幅度地降低材料的使用成本。
上述涂料中各组分、含量的不同,对涂料的性能有着显著的影响。
上述一种基于纳米铜的防霉涂料,各组分的配比合理,纳米铜和GR复合钛白颜料与涂料中各种成分实现有机结合,原料易得,环保,对人体无害,防霉效果良好、持久,附着力强,成模性好,生产成本低。其施工工艺与原有的施工工艺相同,在防霉涂料使用的各种场合,能有效地防止各种细菌的滋生与繁殖。
具体实施方式
以下结合具体实施例对本发明作进一步说明。
实施例1
所述的一种基于纳米铜的防霉涂料,由重量份数的以下物质制成:有机硅改性丙烯酸树脂10份、羧基丁苯胶乳20份、端羧基聚脂树脂10份、羟乙基甲基纤维素6份、消泡剂3份、粒径为30nm的纳米铜1份、GR复合钛白颜料6份。
其制备方法如下:将上述各组份按配比投入高速混料缸高速混合3分钟,然后在螺杆挤出机进行挤出,即得到防霉性粉末涂料。
实施例2
所述的一种基于纳米铜的防霉涂料,由重量份数的以下物质制成:有机硅改性丙烯酸树脂12份、羧基丁苯胶乳25份、端羧基聚脂树脂12份、羟乙基甲基纤维素8份、消泡剂3份、粒径为32nm的纳米铜2份、GR复合钛白颜料8份。
其制备方法如下:将上述各组份按配比投入高速混料缸高速混合4分钟,然后在螺杆挤出机进行挤出,即得到防霉性粉末涂料。
实施例3
所述的一种基于纳米铜的防霉涂料,由重量份数的以下物质制成:有机硅改性丙烯酸树脂25份、羧基丁苯胶乳35份、端羧基聚脂树脂20份、羟乙基甲基纤维素12份、消泡剂4份、粒径为35nm的纳米铜2份、GR复合钛白颜料9份。
其制备方法如下:将上述各组份按配比投入高速混料缸高速混合5分钟,然后在螺杆挤出机进行挤出,即得到防霉性粉末涂料。
实施例4
所述的一种基于纳米铜的防霉涂料,由重量份数的以下物质制成:有机硅改性丙烯酸树脂30份、羧基丁苯胶乳40份、端羧基聚脂树脂25份、羟乙基甲基纤维素15份、消泡剂4份、粒径为40nm的纳米铜3份、GR复合钛白颜料10份。
其制备方法如下:将上述各组份按配比投入高速混料缸高速混合5分钟,然后在螺杆挤出机进行挤出,即得到防霉性粉末涂料。
上述各个实施例2的粉末涂料经性能检测,检测结果见表1。
测试结果表明 :该涂料对密闭空间内的甲醛、氨气和苯类等化合物的降解效率均可达到 96.3% , 可以有效杀死周围的大肠杆菌、金黄色葡萄球菌、盘尼西林葡萄球菌、霉菌等微生物,起到防霉防霉的作用,对多种有害细菌均具有杀菌彻底性和长效性;涂层干燥时间、固化时间短,涂层附着力好,涂层抗冲击强度强,涂层柔韧性好,且耐热、耐老化;VOC含量为每升35克,远远低于国家标准。以实施例1、实施例3、实施例4进行性能检测,也能达到本发明所述的有益效果。
Claims (3)
1.一种基于纳米铜的防霉涂料,其特征在于由重量份数的以下物质制成:有机硅改性丙烯酸树脂10-30份、羧基丁苯胶乳20-40份、端羧基聚酯树脂10-25份、羟乙基甲基纤维素6-15份、消泡剂3-4份、粒径为30-40nm的纳米铜1-3份、GR复合钛白颜料6-10份。
2.如权利要求1所述的一种基于纳米铜的防霉涂料,其特征在于有机硅改性丙烯酸树脂12-25份、羧基丁苯胶乳22-35份、端羧基聚酯树脂12-20份、羟乙基甲基纤维素8-12份、消泡剂3.5份、纳米铜2份、GR复合钛白颜料7-8份。
3.如权利要求1所述的一种基于纳米铜的防霉涂料,其特征在于有机硅改性丙烯酸树脂15-20份、羧基丁苯胶乳25-30份、端羧基聚酯树脂15-18份、羟乙基甲基纤维素9-10份、消泡剂3.5份、纳米铜2份、GR复合钛白颜料7.5份。
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