CN111019177A - 一种防水隔音垫及其制造方法 - Google Patents
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Abstract
本发明公开了一种防水隔音垫及其制造方法,在隔音垫本体表面具有非连续的微凸起结构阵列,在微凸起结构阵列上涂覆有防水涂料形成的防水涂层;制造方法如下:打磨隔音垫本体表面;采用双丝电弧喷涂工艺,使铝合金焊丝在电弧放电后被半固态熔化,并在高压氮气作用下雾化,将喷枪沿着水平方向非匀速运动,以在隔音垫本体表面形成不连续的微凸起结构阵列;在隔音垫本体表面、微凸起结构阵列之上涂装水性环氧层;将含有纳米高熵合金颗粒的防水涂料涂在微凸起结构阵列上,形成防水涂层。本发明的隔音垫在微凸起结构阵列和低表面能的防水涂层协同作用下,隔音垫本体表面形成类似荷叶疏水功能的表面,具有截留空气作用使水滴不能铺开,降低对水的附着。
Description
技术领域
本发明涉及一种防水隔音垫及其制造方法,属于建筑防水技术领域。
背景技术
隔音是现代建筑的重要环保举措。现有技术的隔音垫防水效果都比较差,其原因是目前采用的隔音材料都是松软多孔材料,容易吸湿吸水,在建筑施工过程中,即使采用了防水塑料膜,由于在边角之类的节点仅采取密封胶之类的措施,因此稍有疏忽,隔音楼面相邻的卫生间,淋浴房,厨房,阳台等处排水时无法杜绝水浸透到隔音层内,结果导致发霉和异味出现,污染室内环境。
因此,针对上述问题,有必要提出进一步的解决方案。从防水涂层的角度出发,开发一种不仅具有隔音效果,并且可以彻底杜绝渗水,施工方便的隔音垫,给未来建筑营造一个绿色的优美环境。
发明内容
本发明所要解决的技术问题是:克服现有技术的不足,提供一种防水隔音垫及其制造方法,以提高隔音垫的防水功能,彻底杜绝渗水。
为了解决上述技术问题,本发明的技术方案是:一种防水隔音垫,包括隔音垫本体,在所述隔音垫本体表面具有非连续的微凸起结构阵列,并且,在微凸起结构阵列上涂覆有防水涂料形成的防水涂层。
进一步,所述隔音垫本体表面的防水涂层含有纳米高熵合金颗粒。
进一步,所述纳米高熵合金颗粒为FeNiCrCuCoBx纳米高熵合金,Fe、Ni、Cr、Cu、Co、B的摩尔比为1:1:1:1:1:x,x的范围为0.1~1,其粒径范围为100~300nm,晶体结晶为单一的体心立方。
本发明还提供了一种防水隔音垫的制造方法,包括如下步骤:
步骤S1,打磨隔音垫本体表面,以使隔音垫本体表面粗化;
步骤S2,采用双丝电弧喷涂工艺,使铝合金焊丝在电弧放电后被半固态熔化,并在高压氮气作用下雾化,将喷枪沿着水平方向非匀速运动,以在隔音垫本体表面形成不连续的微凸起结构阵列;
步骤S3,在隔音垫本体表面、微凸起结构阵列之上涂装水性环氧层;
步骤S4,将含有纳米高熵合金颗粒的防水涂料涂在微凸起结构阵列上,形成防水涂层。
进一步,所述水性环氧层包括水性环氧底层和水性环氧中间涂层,并且,水性环氧中间涂层的厚度大于水性环氧底层的厚度。
进一步,所述防水涂料包括甲组分和乙组分,并且,甲组分和乙组分按照质量比为1:4混合均匀,其中,
所述甲组分包括以下组成和质量份:
多异氰酸酯预聚体15~25份;
消泡剂0.05~0.1份;
丙二醇二醋酸酯5~15份;
所述乙组分包括以下组成和质量份:
水性树脂A 25~35份;
水性树脂B 25~35份;
去离子水5~10份;
消泡剂0.2~2份;
流平剂0.1~2份;
分散剂0.2~2份;
钛白粉20~30份;
流变剂0.1~0.5份;
纳米高熵合金颗粒20~30份。
进一步,所述甲组分和乙组分混合均匀后,加入去离子水调节防水涂料的粘度并静置20s以上,以使甲组分和乙组分充分反应。
进一步,所述甲组分和乙组分混合均匀后,采用120目的过滤网过滤,静置消泡后,喷涂至所述隔音垫本体的具有微凸起阵列的表面上,形成所述防水涂层。
采用了上述技术方案后,本发明的防水隔音垫,通过仿生荷叶表面微结构,采用双丝电弧喷涂和电弧熔覆技术在隔音垫本体表面织构微凸起结构阵列,微凸起与微凸起之间会形成空气垫,通过在微凸起结构阵列表面涂覆含有纳米高熵合金颗粒的防水涂料,从而在隔音垫本体表面形成低表面能涂层,在微凸起结构阵列和低表面能的防水涂层协同作用下,隔音垫本体表面形成类似荷叶疏水功能的表面,具有截留空气作用使水滴不能铺开而渗透进去,降低对水的附着。本发明的防水隔音垫在潮湿环境中不仅具有理想的隔音效果而且能彻底避免隔音垫被水浸泡的可能。
本发明通过在防水涂层中添加单一体心立方结构的纳米高熵合金颗粒,提高了防水涂层的硬度和耐腐蚀性。本发明的甲组分含有活泼异氰酸根-NCO组分,其与乙组分中的羟基化合物反应生成的低分子量的聚合物,这种预聚体能在水中迅速被分散,具有较低的黏度,有利于改善涂层的涂布性能,方便在隔音垫表面完全涂装防水涂层,且防水涂层具有贮存稳定性及低挥发性的优点。
附图说明
图1为本发明的隔音垫本体表面形成的微凸起结构阵列的SEM图;
图2为本发明的防水隔音垫表面的光学显微镜照片;
图3为本发明的防水隔音垫表面凸起的光学显微镜照片;
图4为本发明所使用的FeNiCrCuCoB0.2纳米高熵合金的扫描电镜SEM图;
图5为本发明的制备防水涂料的流程图。
具体实施方式
为了使本发明的内容更容易被清楚地理解,下面根据具体实施例并结合附图,对本发明作进一步详细的说明。
一种防水隔音垫,包括隔音垫本体,在所述隔音垫本体表面具有非连续的微凸起结构阵列,并且,在微凸起结构阵列上涂覆有防水涂料形成的防水涂层。所述隔音垫本体表面的防水涂层含有纳米高熵合金颗粒。所述纳米高熵合金颗粒为FeNiCrCuCoBx纳米高熵合金,Fe、Ni、Cr、Cu、Co、B的摩尔比为1:1:1:1:1:x,x的范围为0.05~0.3,其粒径范围为100~300nm,晶体结晶为单一的体心立方。本实施例以FeNiCrCuCoB0.2纳米高熵合金为例。在防水涂料中加入FeNiCrCuCoB0.2纳米高熵合金,用于提高防水涂层的硬度和耐腐蚀性。
本发明的防水隔音垫,通过仿生荷叶表面微结构,在隔音垫本体表面织构微凸起结构阵列,微凸起与微凸起之间会形成空气垫,通过在微凸起结构阵列表面涂覆含有纳米高熵合金颗粒的防水涂料,从而在隔音垫本体表面形成低表面能涂层,在微凸起结构阵列和低表面能的防水涂层协同作用下,隔音垫本体表面形成类似荷叶疏水功能的表面,具有截留空气作用使水滴不能铺开而渗透进去,降低对水的附着。本发明的防水隔音垫在潮湿环境中不仅具有理想的隔音效果而且能彻底避免隔音垫被水浸泡的可能。
制备上述防水隔音垫,需要首先制备纳米高熵合金和防水涂料。
以制备FeNiCrCuCoB0.2纳米高熵合金为例,说明纳米高熵合金的制备方法。
采用纯度99.99%的Fe粉、Ni粉、Cr粉、Cu粉、Co粉、B粉,将Fe粉、Ni粉、Cr粉、Cu粉、Co粉、B粉按照原子比1:1:1:1:1:0.2置入高能球磨机中,采用高能球磨机进行均匀混合,球磨的转速优选为200r/min,球磨时间2h,得到金属混合物。
将获得的金属混合物在坩埚熔炼炉中加热至1300℃~1500℃进行熔炼,得到金属混合液,整个熔炼过程均在氩气气氛保护下进行。
将熔炼后的金属混合液倒入雾化室的金属液包中进行高压雾化,雾化过程在0.9~1.2Mpa的高压氩气中完成,利用高压氩气使金属混合液充分雾化。雾化时,所采用的喷头孔径优选为0.5-1mm,喷头孔径过小,会导致金属混合液不易喷出,增加雾化难度,喷头孔径过大,会导致雾化后生成的液滴过大,雾化效果不好,优选0.5-1mm的喷头孔径,可以在保持具有良好雾化效果的条件下,同时具有较高的效率。雾化后,需以至少10℃/s的冷却速度对雾化后的金属混合液进行冷却沉积,从而保证获得的粒径范围在3~4μm。冷却速度不宜过慢。冷却速度较慢会导致大量的金属小液滴汇聚融合,生产较大的金属液滴,较弱高压雾化的效果,而且,金属小液滴的汇聚融合,会导致高熵合金颗粒的尺寸不均,不利于控制高熵合金的粒径。较快的冷却速度能使金属小液滴快速沉积固定,便于对粒径进行控制,且粒径相对均匀。
将获得的高熵合金进行低温球磨,直至粒径范围为100~300nm。对高熵合金进行的低温球磨,可反复进行多次,本实施例以进行两次低温球磨为例。步骤T1,将制得的高熵合金置于-196℃的液氮中浸泡24h,然后低速球磨至1~2μm,球磨转速为200r/min;步骤T2,将高熵合金再次置于-196℃的液氮中浸泡24h,再低速球磨至100~300nm,球磨转速为200r/min。最终得到100~300nm粒径的FeNiCrCuCoB0.2纳米高熵合金。图4为本实施例得到的FeNiCrCuCoB0.2纳米高熵合金的扫描电镜SEM图,从图中可看到,得到的高熵合金颗粒为球形,且相对比较均匀,粒径在100~300nm之间。
利用制得的纳米高熵合金制备防水涂料,图5示出了防水涂料的制备流程。防水涂料包括甲组分和乙组分,并且,甲组分和乙组分按照质量比为1:4混合均匀,其中,
甲组分包括以下组成和质量份:
多异氰酸酯预聚体15~25份;
消泡剂0.05~0.1份;
丙二醇二醋酸酯5~15份;
乙组分包括以下组成和质量份:
水性树脂A 25~35份;
水性树脂B 25~35份;
去离子水5~10份;
消泡剂0.2~2份;
流平剂0.1~2份;
分散剂0.2~2份;
钛白粉20~30份;
流变剂0.1~0.5份;
纳米高熵合金颗粒20~30份。
本实施例中,以甲组分包括15质量份的多异氰酸酯预聚体、0.05质量份的消泡剂和5质量份的丙二醇二醋酸酯为例,以乙组分包括25质量份的水性树脂A、25质量份的水性树脂B、5质量份的去离子水、0.2质量份的消泡剂、0.1质量份的流平剂、0.2质量份的分散剂、20质量份的钛白粉、0.1质量份的流变剂和20质量份的纳米高熵合金为例。本实施例中,多异氰酸酯预聚体为Bayhydur XP 2655,当然也可以使用Bayhydur XP 3100或Bayhydur2319;含有活泼异氰酸根-NCO组分与乙组分中的羟基化合物反应生成的低分子量的聚合物,这种预聚体能在水中迅速被分散,具有较低的黏度,有利于改善涂层的涂布性能,有贮存稳定性及低挥发性。消泡剂为BYK-028,当然也可以使用BYK-024。水性树脂A为BayhydrolA 2470,当然也可以使用Bayhydrol A 145,是多元醇含有多羟基的水分散体系。水性树脂B为Bayhydrol A 2646,当然也可以使用Bayhydrol VP LS 2235,是多元醇含有多羟基的水分散体系。乙组分中的消泡剂,优选与甲组分中的消泡剂相同,乙组分中所使用的消泡剂为BYK-028,当然也可以使用BYK-024。流平剂为BYK-348,当然也可以使用BYK-306。分散剂为BYK-190,当然也可以使用Dispex HDN(30%)。钛白粉为Tioxide TR81,当然也可以使用Tiona RCL 535。流变剂为Acrysol RM-5000,当然也可以使用RM2020。
如图5所示,防水涂料的制备方法如下:
甲组份的制备:
将15质量份的多异氰酸酯预聚体、0.05质量份的消泡剂和5质量份的丙二醇二醋酸酯加入搅拌罐中慢速搅拌,搅拌罐的转速为200r/min,混合均匀后过滤,得到甲组分;
乙组分的制备:
将25质量份的水性树脂A和25质量份的水性树脂B加入搅拌容器中搅拌,在搅拌过程中依次加入5质量份的去离子水、0.2质量份的消泡剂、0.1质量份的流平剂、0.2质量份的分散剂、20质量份的钛白粉、0.1质量份的流变剂和20质量份的纳米高熵合金,继续搅拌至物料混合均匀,将混合物倒入砂磨机研磨至细度≤10µm,得到乙组分;
甲组分和乙组分制备好后,将上述甲组分和乙组分按照1:4的质量比混合,制成所述防水涂料。防水涂料在使用时,可加入适量的去离子水,调节至合适的粘度使用。
甲组分制备好后,可进行过滤、出料包装,以备现场施工时使用。乙组分制备好后,也可进行过滤、出料包装,以备现场施工时使用。现场施工时,将甲组分和乙组分按照1:4的质量比混合,搅拌混合均匀,再加入适量的去离子水,调节防水涂料的粘度,使用120目的滤网过滤,静置消泡后,即可进行喷涂,混合好的防水涂料尽量在4h以内使用。
将防水涂料涂覆在隔音垫本体上,得到本发明的防水隔音垫。
防水隔音垫的制造方法,包括如下步骤:
步骤S1,打磨隔音垫本体表面,以使隔音垫本体表面粗化;在隔音垫本体表面打磨时,先用粗砂纸打磨一遍,再用细砂纸打磨一遍,打磨时先竖着打磨一遍,然后横着打磨,最后再画圈打磨一遍,将隔音垫表面充分粗化;
步骤S2,采用双丝电弧喷涂工艺,使铝合金焊丝在电弧放电后被半固态熔化,并在高压氮气作用下雾化,将喷枪沿着水平方向非匀速运动,以在隔音垫本体表面形成不连续的微凸起结构阵列;图1为隔音垫本体表面形成的微凸起结构阵列的SEM图;
步骤S3,在隔音垫本体表面、微凸起结构阵列之上涂装水性环氧层;水性环氧层优选包括水性环氧底层和水性环氧中间涂层,并且,水性环氧中间涂层的厚度大于水性环氧底层的厚度。本实施例中,水性环氧底层40µm,水性环氧中间涂层80µm,也可根据实际需要调整水性环氧底层涂层和水性环氧中间涂层的厚度。
步骤S4,将甲组分和乙组分按照1:4的质量比混合,搅拌混合均匀,再加入适量的去离子水,调节防水涂料的粘度,使用120目的滤网过滤,静置消泡后,即可进行喷涂,混合好的防水涂料尽量在4h以内使用。将含有纳米高熵合金颗粒的防水涂料涂在微凸起结构阵列上,干燥后形成防水涂层。图2、图3示出了本发明的防水隔音垫表面的仿荷叶表面组结构的照片。
针对上述实施例得到的防水隔音垫进行涂层性能指标检测,包括涂层厚度、光泽度、附着力、硬度、抗冲击强度、耐水性、耐盐水性、静态接触角。检测方法如下:
1)涂层厚度的测定
根据GB/T 13452.2-92,以测厚仪测定涂层厚度,在涂层完全干燥并形成硬膜的前提下,将测厚仪放置在样板表面,确保测厚仪与仪器垂直,然后转动表盘以使测厚仪量程大于涂层厚度,按下测量按钮,待表头不再转动时读数,同一个板测三次然后求平均值,误差不应超过±2μm,且测试点距离不能太近。
2)涂层附着力的测定(涂层的划格实验)
按GB/T 9286-1998,将板平放在桌面上以保证实验过程样板不会变形。手握划格器,均匀施力匀速地在样板上横着划一段距离的划痕,然后保持相同的力度与速度与之前的划痕成90°再划一段相同的距离,得到格阵,观察涂层脱落程度,若脱落得太厉害,用软毛刷沿着格阵线的方向刷一刷再观察效果。同一块板在不同的部位至少测试三次,若三次结果差值超过一个单位等级,则作废。
3)涂层硬度的测定
按照GB/T 6739-2006铅笔法测定涂层硬度,参照GB/T 13452.2-92在确保涂层厚度误差不大的情况下,准备6B(软)到6H(硬)的铅笔各一支,利用小车按照铅笔从硬到软的顺序用铅笔在涂层的表面上推进至少7mm,观察涂层破损情况,可借助橡皮轻擦表面以方便观察,不能损伤涂层表面的铅笔硬度即为涂层硬度。
4)涂层抗冲击性能的测定(快速变形实验)
按照GB/T 20624.2-2006,先将重锤提升到导管上最高高度固定,再将涂层样板平贴放在实验装置底座的支撑面上,在确保每冲击点与边缘之间的距离不小于15 mm的前提下,释放重锤,使其自由下落到冲头上。升高重锤,取出样板并用放大镜观察,若样板有明显的裂纹,降低重锤高度,重复前面的实验步骤,直至首次观察不到明显裂纹,记录此时的冲击强度。
5)涂层耐水性的测定
按照GB/T 1733-93,采用浸水实验法,将样板浸泡在蒸馏水中,样板之间不应贴合,每天观察涂层是否有失光、发白、起泡、起皱、生锈等现象,若出现,则记录时间,单位:天。
6)静态接触角
将涂覆涂层的样品水平静置,采用接触角测量仪测定接触角,水滴体积为1μL。
检测后的性能指标结果如下表1所示:
表1
检测项目指标 | 实施例1 |
涂层厚度 | 80μm |
附着力,级 | 2 |
硬度 | 2H |
耐冲击性,kg·cm | 50 |
耐水性(d) | 900h |
静态接触角 | 151 |
经过上述实施例,本发明的防水隔音垫通过仿生荷叶表面微结构,具有较高硬度,较好的耐冲击性,较好的耐水性能,而且,隔音垫表面的静态接触角均大于150度,使水滴不能铺开,无法渗透进去,整体显示出良好的防水性能。
以上所述的具体实施例,对本发明解决的技术问题、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本发明的具体实施例而已,并不用于限制本发明,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (8)
1.一种防水隔音垫,其特征在于:包括隔音垫本体,在所述隔音垫本体表面具有非连续的微凸起结构阵列,并且,在微凸起结构阵列上涂覆有防水涂料形成的防水涂层。
2.根据权利要求1所述的防水隔音垫,其特征在于:所述隔音垫本体表面的防水涂层含有纳米高熵合金颗粒。
3.根据权利要求2所述的防水隔音垫,其特征在于:所述纳米高熵合金颗粒为FeNiCrCuCoBx纳米高熵合金,Fe、Ni、Cr、Cu、Co、B的摩尔比为1:1:1:1:1:x,x的范围为0.1~1,其粒径范围为100~300nm,晶体结晶为单一的体心立方。
4.一种如权利要求1至3任一项所述的防水隔音垫的制造方法,其特征在于:包括如下步骤:
步骤S1,打磨隔音垫本体表面,以使隔音垫本体表面粗化;
步骤S2,采用双丝电弧喷涂工艺,使铝合金焊丝在电弧放电后被半固态熔化,并在高压氮气作用下雾化,将喷枪沿着水平方向非匀速运动,以在隔音垫本体表面形成不连续的微凸起结构阵列;
步骤S3,在隔音垫本体表面、微凸起结构阵列之上涂装水性环氧层;
步骤S4,将含有纳米高熵合金颗粒的防水涂料涂在微凸起结构阵列上,形成防水涂层。
5.根据权利要求4所述的防水隔音垫的制造方法,其特征在于:所述水性环氧层包括水性环氧底层和水性环氧中间涂层,并且,水性环氧中间涂层的厚度大于水性环氧底层的厚度。
6.根据权利要求5所述的防水隔音垫的制造方法,其特征在于:所述防水涂料包括甲组分和乙组分,并且,甲组分和乙组分按照质量比为1:4混合均匀,其中,
所述甲组分包括以下组成和质量份:
多异氰酸酯预聚体15~25份;
消泡剂0.05~0.1份;
丙二醇二醋酸酯5~15份;
所述乙组分包括以下组成和质量份:
水性树脂A 25~35份;
水性树脂B 25~35份;
去离子水5~10份;
消泡剂0.2~2份;
流平剂0.1~2份;
分散剂0.2~2份;
钛白粉20~30份;
流变剂0.1~0.5份;
纳米高熵合金颗粒20~30份。
7.根据权利要求6所述的防水隔音垫的制造方法,其特征在于:所述甲组分和乙组分混合均匀后,加入去离子水调节防水涂料的粘度并静置20s以上。
8.根据权利要求7所述的防水隔音垫的制造方法,其特征在于:所述甲组分和乙组分混合均匀后,采用120目的过滤网过滤,静置消泡后,喷涂至所述隔音垫本体的具有微凸起阵列的表面上,形成所述防水涂层。
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