CN117186737A - 一种水性长效钢箱桥梁复合漆及其制备方法和应用 - Google Patents
一种水性长效钢箱桥梁复合漆及其制备方法和应用 Download PDFInfo
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Abstract
本发明提供一种水性长效钢箱桥梁复合漆及其制备方法和应用,涉及涂料技术领域。本发明所述水性长效钢箱桥梁复合漆的制备原料为:128环氧树脂、氟碳树脂、碳粉、活性稀释剂、消泡剂、二氧化硅、800目石英粉、三元水性胺固化剂、金红石钛白粉、烷芳基聚醇、去离子水、流平剂、分散剂、膨润土、重钙、三聚磷酸铝、防闪锈剂TDS。本发明提出的复合漆,无VOC排放,符合HJ2537‑2014新标准,具有优异的耐候性,人工加速老化指标在紫外线荧光灯下可达到1500h以上,应用于桥梁,箱梁内壁大面积涂装,对人体无任何副作用,且制备方法简单、快捷,制作成本低。
Description
本申请是申请日为2018年07月20日、申请号为CN201810800495.4、发明名称为《一种水性长效钢箱桥梁复合漆及其制备方法》的分案申请。
技术领域
本发明涉及涂料技术领域,尤其涉及一种水性长效钢箱桥梁复合漆及其制备方法和应用。
背景技术
涂料是涂覆在被保护或被装饰的物体表面,并能与被涂物形成牢固附着的连续薄膜,通常是以树脂、或油、或乳液为主,添加或不添加颜料、填料,添加相应助剂,用有机溶剂或水配制而成的粘稠液体。用有机溶剂配制而成的涂料通常具有优异的耐候性、抗沾污和耐酸碱性,但其有机挥发物(VOC)浓度高达350g/L,且涂层易起皮、脱落、涂膜透气性差。目前钢箱桥梁复合漆中的VOC含量普遍偏高,在钢箱桥梁密闭空间防腐蚀作业时对人体与周边环境危害性较大。
随着现代科技的日新月异,人们在享受美好生活的同时,对环保问题越来越重视,对涂料中VOC排放的限定越来越严格,因此水性涂料取代有机溶剂型涂料必将是涂料的发展趋势。基于此本发明提出一种水性长效钢箱桥梁复合漆及其制备方法。
发明内容
本发明的目的在于提供一种高耐候性、高耐腐性、无VOC水性长效钢箱桥梁复合漆及其制备方法和应用,该复合漆具有无VOC和超强耐候、耐腐蚀性,既能将钢箱桥梁密闭空间防腐蚀作业时涂料对人体与周边环境的危害性降到最低限度,又能达到对钢箱桥梁防腐要求的最高标准,而且制备的复合漆在人工加速老化条件下可达到1500h。
为实现以上目的,本发明通过以下技术方案予以实现:
一种水性长效钢箱桥梁复合漆,由以下重量份的原料制备:128环氧树脂30~36份、氟碳树脂5~9份、碳粉12~16份、活性稀释剂3~8份、消泡剂0.2~0.8份、二氧化硅5~10份、800目石英粉10~15份、三元水性胺固化剂65~75份、金红石钛白粉10~16份、烷芳基聚醇0.5~1.5份、去离子水14~18份、流平剂0.2~0.8份、分散剂0.1~0.7份、膨润土0.4~0.8份、重钙15~25份、三聚磷酸铝15~21份、防闪锈剂TDS 0.93~3.8份。
优选地,所述水性长效钢箱桥梁复合漆由以下重量份的原料制备:128环氧树脂32~34份、氟碳树脂6~8份、碳粉13~15份、活性稀释剂3.5~7份、消泡剂0.4~0.6份、二氧化硅6~9份、800目石英粉11~14份、三元水性胺固化剂68~72份、金红石钛白粉12~14份、烷芳基聚醇0.8~1.2份、去离子水15~17份、流平剂0.3~0.7份、分散剂0.2~0.6份、膨润土0.5~0.7份、重钙18~22份、三聚磷酸铝17~19份、防闪锈剂TDS1.2~3.2份。
优选地,所述水性长效钢箱桥梁复合漆由以下重量份的原料制备:128环氧树脂33份、氟碳树脂7份、碳粉14份、活性稀释剂5份、消泡剂0.5份、二氧化硅8份、800目石英粉12份、三元水性胺固化剂70份、金红石钛白粉13份、烷芳基聚醇1份、去离子水16份、流平剂0.5份、分散剂0.4份、膨润土0.6份、重钙20份、三聚磷酸铝18份、防闪锈剂TDS2.2份。
优选地,所述消泡剂为矿物油类消泡剂、聚醚改性消泡剂和改性有机硅类消泡剂中的一种或任意几种的组合。
优选地,所述活性稀释剂为环氧丙烷苄基醚。
本发明还提出了一种水性长效钢箱桥梁复合漆的制备方法,包括以下步骤:
S1、按照128环氧树脂30~36份、氟碳树脂5~9份、碳粉12~16份、活性稀释剂3~8份、消泡剂0.2~0.8份、二氧化硅5~10份、800目石英粉10~15份、三元水性胺固化剂65~75份、金红石钛白粉10~16份、烷芳基聚醇0.5~1.5份、去离子水14~18份、流平剂0.2~0.8份、分散剂0.1~0.7份、膨润土0.4~0.8份、重钙15~25份、三聚磷酸铝15~21份、防闪锈剂TDS0.93~3.8份准备各原料,备用;
S2、在转速为400~600r/min的混合搅拌器下将128环氧树脂、润湿剂、金红石钛白粉分散搅拌3~5min,得混合物A;
S3、提高混合搅拌器的转速至700~900r/min,将二氧化硅、消泡剂、800目石英粉依次加入到混合物A中分散搅拌4~5min,得混合物B;
S3、提高混合搅拌器的转速至1000r/min,向混合物B中加入氟碳树脂、碳粉、去离子水、流平剂、分散剂、膨润土、重钙、三聚磷酸铝和防闪锈剂TDS,分散搅拌5~10min,再依次加入活性稀释剂、三元水性胺固化剂继续分散搅拌15~20min,调节粘度为65~75KU,调节pH值为7.8~9,搅拌均匀即得水性长效钢箱桥梁复合漆。
本发明还提供了上述技术方案所述水性长效钢箱桥梁复合漆或上述技术方案所述制备方法制备的水性长效钢箱桥梁复合漆在钢箱桥梁防腐中的应用。
本发明提供的水性长效钢箱桥梁复合漆,与现有技术相比优点在于:
1、本发明提出的复合漆,通过添加三元水性胺环氧固化剂配合128环氧树脂构成水性环氧体系,保留了传统环氧树脂的附着性、热稳定性、耐化学品性和绝缘性,而且复合漆以水为分散介质,不含VOC有机溶剂,不燃烧、不爆炸、低碳环保,既能将钢箱桥梁密闭空间防腐蚀作业时涂料对人体与周边环境的危害性降到最低限度,又能达到对钢箱桥梁防腐要求的最高标准。
2、本发明制备得到的复合漆,成漆膜后外表平整光滑、装饰性好,漆膜坚韧且具有弹性,抗热胀冷缩性能好,抗紫外线性能优,耐酸、碱、盐性能强,施工性能良好,无毒无害,节能环保,而且制备方法简单、快捷,制作成本低。
3、本发明提出的复合漆中烷芳基聚醇的加入可以改善乳液稳定性和体系的冻融稳定性,在制备过程中,可加速组分表面的润湿过程,提高分散效率,使分散剂性能得以充分展示,达到润湿剂的最小用量下的最大效率。
4、本发明提出的复合漆中添加金红石钛白粉,既可以起到遮盖和装饰的作用,同时还能改善涂料的物化性能,增强化学稳定性,以至提高遮盖力、消色力、防腐蚀性、耐光、耐候性,增强漆膜的机械强度和附着力,防止裂纹,防止紫外线和水分的透过,从而推迟老化,延长漆膜寿命,经实验证明一次性成膜厚度可达200~300μm,对钢筋桥梁防腐蚀保护性能长,涂膜寿命可达30年,是一般涂膜寿命的2~5倍,节约了桥梁防腐的费用,延长了桥梁维修的周期,是节能低碳产品。
5、本发明提出的复合漆中添加氟碳树脂,氟碳表面能低,分子链柔性大,能与128环氧树脂形成三维体,构成互穿网络,提高复合漆的耐玷污性,再配合二氧化硅的添加能够提高复合漆的触变性、防流挂、施工性和抗沾污性,还能对涂料形成屏蔽作用,达到抗紫外老化和热老化作用,除此之外,800目石英粉的加入可以进一步提高复合漆细度、流平性能,耐水、防锈、防腐、防结块、防流挂、防触变、耐高温、耐刻划、耐擦洗和耐电弧绝缘性,并保证复合漆的表面光洁度。
具体实施方式
下面结合具体实施例对本发明作进一步解说。
实施例1
本发明提出的一种水性长效钢箱桥梁复合漆,由以下重量份的原料制备:128环氧树脂30份、氟碳树脂5份、碳粉12份、活性稀释剂3份、消泡剂0.2份、二氧化硅5份、800目石英粉10份、三元水性胺固化剂65份、金红石钛白粉10份、烷芳基聚醇0.5份、去离子水14份、流平剂0.2份、分散剂0.1份、膨润土0.4份、重钙15份、三聚磷酸铝15份、防闪锈剂TDS 0.93份;消泡剂为矿物油类消泡剂;活性稀释剂为环氧丙烷苄基醚。
其制备方法包括以下步骤:
S1、按照128环氧树脂30份、氟碳树脂5份、碳粉12份、活性稀释剂3份、消泡剂0.2份、二氧化硅5份、800目石英粉10份、三元水性胺固化剂65份、金红石钛白粉10份、烷芳基聚醇0.5份、去离子水14份、流平剂0.2份、分散剂0.1份、膨润土0.4份、重钙15份、三聚磷酸铝15份、防闪锈剂TDS 0.93份准备各原料,备用;
S2、在转速为400r/min的混合搅拌器下将128环氧树脂、润湿剂、金红石钛白粉分散搅拌3min,得混合物A;
S3、提高混合搅拌器的转速至700r/min,将二氧化硅、消泡剂、800目石英粉依次加入到混合物A中分散搅拌4min,得混合物B;
S3、提高混合搅拌器的转速至1000r/min,向混合物B中加入氟碳树脂、碳粉、去离子水、流平剂、分散剂、膨润土、重钙、三聚磷酸铝和防闪锈剂TDS,分散搅拌5min,再依次加入活性稀释剂、三元水性胺固化剂继续分散搅拌15min,调节粘度为65KU,调节pH值为7.8,搅拌均匀即得水性长效钢箱桥梁复合漆。
实施例2
本发明提出的一种水性长效钢箱桥梁复合漆,由以下重量份的原料制备:128环氧树脂32份、氟碳树脂6份、碳粉13份、活性稀释剂7份、消泡剂0.6份、二氧化硅9份、800目石英粉12份、三元水性胺固化剂68份、金红石钛白粉15份、烷芳基聚醇1份、去离子水17份、流平剂0.4份、分散剂0.2份、膨润土0.7份、重钙22份、三聚磷酸铝20份、防闪锈剂TDS2份;消泡剂为聚醚改性消泡剂;活性稀释剂为环氧丙烷苄基醚;
其制备方法包括以下步骤:
S1、按照128环氧树脂32份、氟碳树脂6份、碳粉13份、活性稀释剂7份、消泡剂0.6份、二氧化硅9份、800目石英粉12份、三元水性胺固化剂68份、金红石钛白粉15份、烷芳基聚醇1份、去离子水17份、流平剂0.4份、分散剂0.2份、膨润土0.7份、重钙22份、三聚磷酸铝20份、防闪锈剂TDS2份准备各原料,备用;
S2、在转速为450r/min的混合搅拌器下将128环氧树脂、润湿剂、金红石钛白粉分散搅拌5min,得混合物A;
S3、提高混合搅拌器的转速至850r/min,将二氧化硅、消泡剂、800目石英粉依次加入到混合物A中分散搅拌4min,得混合物B;
S3、提高混合搅拌器的转速至1000r/min,向混合物B中加入氟碳树脂、碳粉、去离子水、流平剂、分散剂、膨润土、重钙、三聚磷酸铝和防闪锈剂TDS,分散搅拌9min,再依次加入活性稀释剂、三元水性胺固化剂继续分散搅拌16min,调节粘度为68KU,调节pH值为8.5,搅拌均匀即得水性长效钢箱桥梁复合漆。
实施例3
本发明提出的一种水性长效钢箱桥梁复合漆,由以下重量份的原料制备:128环氧树脂33份、氟碳树脂7份、碳粉14份、活性稀释剂5份、消泡剂0.5份、二氧化硅8份、800目石英粉12份、三元水性胺固化剂70份、金红石钛白粉13份、烷芳基聚醇1份、去离子水16份、流平剂0.5份、分散剂0.4份、膨润土0.6份、重钙20份、三聚磷酸铝18份、防闪锈剂TDS2.2份;消泡剂为矿物油类消泡剂和改性有机硅类消泡剂的组合;活性稀释剂为环氧丙烷苄基醚;
其制备方法包括以下步骤:
S1、按照128环氧树脂33份、氟碳树脂7份、碳粉14份、活性稀释剂5份、消泡剂0.5份、二氧化硅8份、800目石英粉12份、三元水性胺固化剂70份、金红石钛白粉13份、烷芳基聚醇1份、去离子水16份、流平剂0.5份、分散剂0.4份、膨润土0.6份、重钙20份、三聚磷酸铝18份、防闪锈剂TDS2.2份准备各原料,备用;
S2、在转速为500r/min的混合搅拌器下将128环氧树脂、润湿剂、金红石钛白粉分散搅拌4min,得混合物A;
S3、提高混合搅拌器的转速至800r/min,将二氧化硅、消泡剂、800目石英粉依次加入到混合物A中分散搅拌5min,得混合物B;
S3、提高混合搅拌器的转速至1000r/min,向混合物B中加入氟碳树脂、碳粉、去离子水、流平剂、分散剂、膨润土、重钙、三聚磷酸铝和防闪锈剂TDS,分散搅拌8min,再依次加入活性稀释剂、三元水性胺固化剂继续分散搅拌18min,调节粘度为70KU,调节pH值为8.4,搅拌均匀即得水性长效钢箱桥梁复合漆。
实施例4
本发明提出的一种水性长效钢箱桥梁复合漆,由以下重量份的原料制备:128环氧树脂36份、氟碳树脂9份、碳粉16份、活性稀释剂8份、消泡剂0.8份、二氧化硅10份、800目石英粉15份、三元水性胺固化剂75份、金红石钛白粉16份、烷芳基聚醇1.5份、去离子水18份、流平剂0.8份、分散剂0.7份、膨润土0.8份、重钙25份、三聚磷酸铝21份、防闪锈剂TDS 3.8份;消泡剂为改性有机硅类消泡剂;活性稀释剂为环氧丙烷苄基醚;
其制备方法包括以下步骤:
S1、按照128环氧树脂36份、氟碳树脂9份、碳粉16份、活性稀释剂8份、消泡剂0.8份、二氧化硅10份、800目石英粉15份、三元水性胺固化剂75份、金红石钛白粉16份、烷芳基聚醇1.5份、去离子水18份、流平剂0.8份、分散剂0.7份、膨润土0.8份、重钙25份、三聚磷酸铝21份、防闪锈剂TDS 3.8份准备各原料,备用;
S2、在转速为600r/min的混合搅拌器下将128环氧树脂、润湿剂、金红石钛白粉分散搅拌5min,得混合物A;
S3、提高混合搅拌器的转速至900r/min,将二氧化硅、消泡剂、800目石英粉依次加入到混合物A中分散搅拌5min,得混合物B;
S3、提高混合搅拌器的转速至1000r/min,向混合物B中加入氟碳树脂、碳粉、去离子水、流平剂、分散剂、膨润土、重钙、三聚磷酸铝和防闪锈剂TDS,分散搅拌10min,再依次加入活性稀释剂、三元水性胺固化剂继续分散搅拌20min,调节粘度为75KU,调节pH值为9,搅拌均匀即得水性长效钢箱桥梁复合漆。
对实施例1~4制备得到的水性长效钢箱桥梁复合漆进行性能测试,结果见表1。
表1:
通过表中的各项实验数据表明,本发明实施例1~4制备的水性长效钢箱桥梁复合漆,低温稳定性好,附着力强,耐盐雾(1000h)、耐水性(60℃,72h)、耐酸性(5%硫酸720h)、耐碱性(5%氢氧化钠720h)、人工加速荧光紫外线老化实验(1500h)满足要求,且VOC值为0,能够满足大型钢梁、梁箱内外壁涂装各项技术指标。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (7)
1.一种水性长效钢箱桥梁复合漆,其特征在于,由以下重量份的原料制备:128环氧树脂30~36份、氟碳树脂5~9份、碳粉12~16份、活性稀释剂3~8份、消泡剂0.2~0.8份、二氧化硅5~10份、800目石英粉10~15份、三元水性胺固化剂65~75份、金红石钛白粉10~16份、烷芳基聚醇0.5~1.5份、去离子水14~18份、流平剂0.2~0.8份、分散剂0.1~0.7份、膨润土0.4~0.8份、重钙15~25份、三聚磷酸铝15~21份、防闪锈剂TDS 0.93~3.8份。
2.根据权利要求1所述的一种水性长效钢箱桥梁复合漆,其特征在于,由以下重量份的原料制备:128环氧树脂32~34份、氟碳树脂6~8份、碳粉13~15份、活性稀释剂3.5~7份、消泡剂0.4~0.6份、二氧化硅6~9份、800目石英粉11~14份、三元水性胺固化剂68~72份、金红石钛白粉12~14份、烷芳基聚醇0.8~1.2份、去离子水15~17份、流平剂0.3~0.7份、分散剂0.2~0.6份、膨润土0.5~0.7份、重钙18~22份、三聚磷酸铝17~19份、防闪锈剂TDS1.2~3.2份。
3.根据权利要求1或2所述的一种水性长效钢箱桥梁复合漆,其特征在于,,由以下重量份的原料制备:128环氧树脂33份、氟碳树脂7份、碳粉14份、活性稀释剂5份、消泡剂0.5份、二氧化硅8份、800目石英粉12份、三元水性胺固化剂70份、金红石钛白粉13份、烷芳基聚醇1份、去离子水16份、流平剂0.5份、分散剂0.4份、膨润土0.6份、重钙20份、三聚磷酸铝18份、防闪锈剂TDS2.2份。
4.根据权利要求1或2所述的一种水性长效钢箱桥梁复合漆,其特征在于,所述消泡剂为矿物油类消泡剂、聚醚改性消泡剂和改性有机硅类消泡剂中的一种或任意几种的组合。
5.根据权利要求1或2所述的一种水性长效钢箱桥梁复合漆,其特征在于,所述活性稀释剂为环氧丙烷苄基醚。
6.一种水性长效钢箱桥梁复合漆的制备方法,其特征在于,包括以下步骤:
S1、按照128环氧树脂30~36份、氟碳树脂5~9份、碳粉12~16份、活性稀释剂3~8份、消泡剂0.2~0.8份、二氧化硅5~10份、800目石英粉10~15份、三元水性胺固化剂65~75份、金红石钛白粉10~16份、烷芳基聚醇0.5~1.5份、去离子水14~18份、流平剂0.2~0.8份、分散剂0.1~0.7份、膨润土0.4~0.8份、重钙15~25份、三聚磷酸铝15~21份、防闪锈剂TDS0.93~3.8份准备各原料,备用;
S2、在转速为400~600r/min的混合搅拌器下将128环氧树脂、烷芳基聚醇、金红石钛白粉分散搅拌3~5min,得混合物A;
S3、提高混合搅拌器的转速至700~900r/min,将二氧化硅、消泡剂、800目石英粉依次加入到混合物A中分散搅拌4~5min,得混合物B;
S3、提高混合搅拌器的转速至1000r/min,向混合物B中加入氟碳树脂、碳粉、去离子水、流平剂、分散剂、膨润土、重钙、三聚磷酸铝和防闪锈剂TDS,分散搅拌5~10min,再依次加入活性稀释剂、三元水性胺固化剂继续分散搅拌15~20min,调节粘度为65~75KU,调节pH值为7.8~9,搅拌均匀即得水性长效钢箱桥梁复合漆。
7.权利要求1~5任一项所述水性长效钢箱桥梁复合漆或权利要求6所述制备方法制备的水性长效钢箱桥梁复合漆在钢箱桥梁防腐中的应用。
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