CN109355900B - 一种适用于海洋大气环境的高黏防蚀带及其制备方法和应用 - Google Patents
一种适用于海洋大气环境的高黏防蚀带及其制备方法和应用 Download PDFInfo
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Abstract
本发明属于金属防腐领域，具体涉及一种适用于海洋大气环境的高黏防蚀带及其制备方法和应用。防蚀带为经高温浸渍防蚀膏后的无纺布；所述防蚀膏按重量百分比计高粘度改性聚合亚麻油28‑30％，缓蚀剂2‑3％、绝缘剂5‑8％、阻燃型无机填料59‑65％。本发明所得防蚀带具有优异的粘结性能、浸润性能和防腐性能的防蚀带，应用于高湿、高盐的海洋大气环境。
Description
技术领域
本发明属于金属防腐领域，具体涉及一种适用于海洋大气环境的高黏防蚀带及其制备方法和应用。
背景技术
根据ISO分类，海洋环境是腐蚀最为苛刻的自然环境。不同于陆地大气环境，海洋大气具有盐分高、湿度大的腐蚀特点，钢结构，尤其是异形钢结构的腐蚀被显著加速。海洋大气环境中异型钢结构的腐蚀与防护一直是海洋钢结构防护的短板问题。目前，常规防护手段一般为涂镀层、大黄油等防护手段，但是长期实践表明，由于海洋大气的高腐蚀性，常规手段不能为异形钢结构提供良好的防护。因此，研发可为异形钢结构提供柔软防护的高黏防蚀带具有重要意义。
发明内容
针对上述高腐蚀性的海洋大气环境中钢结构的防护问题，本发明目的在于提供一种适用于海洋大气环境的高黏防蚀带及其制备方法和应用。
为实现上述目的，本发明采取以下技术方案为：
一种适用于海洋大气环境的高黏防蚀带，防蚀带为经高温浸渍防蚀膏后的无纺布；所述防蚀膏按重量百分比计高粘度改性聚合亚麻油28-30％，缓蚀剂2-3％、绝缘剂5-8％、阻燃型无机填料59-65％。
以高粘度改性聚合亚麻油作为基质，添加缓蚀剂、绝缘剂、阻燃型无机。
所述防蚀带为将无纺布浸渍于100-150℃下的防蚀膏中，浸渍0.5-2h；其中，防蚀膏与无纺布质量比为9:1。
所述高粘度改性聚合亚麻油为工业亚麻油通过预氧化预聚处理制备。
进一步的说，通过将工业亚麻油在空气氛围中加热至120℃，搅拌8-10h，完成氧化预聚。
所述缓蚀剂为鞣酸、硬脂酸钙、硅酸钠与乙醇胺混合物，其质量分数比范围为1:5:0.1:0.01；所述阻燃型无机填料为氢氧化铝、氢氧化镁与有机膨润土混合物，其质量分数比为3:2:1；所述绝缘剂为纳米氧化铝，其粒径20-100纳米。
一种适用于海洋大气环境的高黏防蚀带的制备方法，防蚀带为将无纺布浸渍于100-150℃下的防蚀膏中，浸渍0.5-2h；其中，防蚀膏与无纺布质量比为9:1；所述防蚀膏按重量百分比计高粘度改性聚合亚麻油28-30％，缓蚀剂2-3％、绝缘剂5-8％、阻燃型无机填料59-65％。
所述高粘度改性聚合亚麻油为工业亚麻油通过预氧化预聚处理制备。
所述缓蚀剂为鞣酸、硬脂酸钙、硅酸钠与乙醇胺混合物，其质量分数比范围为1:5:0.1:0.01；所述阻燃型无机填料为氢氧化铝、氢氧化镁与有机膨润土混合物，其质量分数比为3:2:1；所述绝缘剂为纳米氧化铝，其粒径20-100纳米。
一种适用于海洋大气环境的高黏防蚀带的应用，所述防蚀带作为适用于海洋大气环境的高黏防蚀膏的应用。
本发明的有益效果在于：
本发明采用高粘度改性聚合亚麻油作为防蚀带的膏状基础化合物，大大增强了防蚀带对基底表面的附着力，增强其包覆的紧密性与位移追随性；添加复配的缓蚀剂，获得良好的腐蚀抑制效果；采用纳米氧化铝作为绝缘剂，大大增强了防蚀带的电阻率，阻碍电子转移，进而获得增强的耐腐蚀性能。具体在于：
(1)本发明通过采用高粘度改性聚合亚麻油，大大提升了防蚀带的黏度，使其紧密贴合于带保护基体。
(2)本发明通过添加复配的缓蚀剂，使防蚀带获得了增强的缓蚀效果，降低其在腐蚀环境中的腐蚀速率。
(3)本发明通过添加绝缘剂纳米氧化铝，大大增大了防蚀带的电阻率，抑制了电化学腐蚀的发生速率，增强其耐蚀性能。
附图说明
图1为本发明实施例提供的高黏防蚀带C与D防护下的钢铁试样的盐雾实验光学照片。
具体实施方式
以下通过具体的实施例对本发明作进一步说明，有助于本领域的普通技术人员更全面的理解本发明，但不以任何方式限制本发明。
实施例1：
高黏防蚀带与基底结合力测试：
(1)制备防蚀带的膏体材料A：工业亚麻油28％，缓蚀剂3％、纳米氧化铝8％、阻燃型无机填料61％；
制备高黏防蚀带的膏体材料B：高粘度改性聚合亚麻油28％，缓蚀剂3％、纳米氧化铝8％、阻燃型无机填料61％。
所述缓蚀剂为鞣酸、硬脂酸钙、硅酸钠与乙醇胺混合物，其质量分数比范围为1:5:0.1:0.01；所述阻燃型无机填料为氢氧化铝、氢氧化镁与有机膨润土的混合物，其质量分数比为3:2:1；所述绝缘剂为纳米氧化铝，其粒径15纳米。
所述高粘度改性聚合亚麻油为工业亚麻油通过预氧化预聚处理制备。将工业亚麻油在空气氛围中加热至120℃，搅拌8h，完成氧化预聚。
(2)分别将膏体A与膏体B加热至150摄氏度后浸渍于无纺布上，制备得到防蚀带A与高黏防蚀带B；其中，膏体与无纺布之间质量比为9:1。
(3)利用剥离强度测试仪分别对防蚀带A、高黏防蚀带B与基底间的结合力进行测试，测定结果见表1
表1防蚀带A与高黏防蚀带B的结合力
由测试结果可知，防蚀带A的基底结合力为150N/m，而高黏防蚀带B的基底结合力则达到400N/m，相比防蚀带A提高了约3倍，显示了显著增强的黏度，增强其包覆的紧密性与位移追随性
实施例2：
高黏防蚀耐蚀性测试：
(1)制备膏体材料C：高粘度改性聚合亚麻油30％、阻燃型无机填料70％；
制备膏体材料D：高粘度改性聚合亚麻油30％，缓蚀剂3％、纳米氧化铝8％、阻燃型无机填料59％。
所述缓蚀剂为鞣酸、硬脂酸钙、硅酸钠与乙醇胺混合物，其质量分数比范围为1:5:0.1:0.01；所述阻燃型无机填料为氢氧化铝、氢氧化镁与有机膨润土的混合物，其质量分数比为3:2:1；所述绝缘剂为纳米氧化铝，其粒径15纳米。
所述高粘度改性聚合亚麻油为工业亚麻油通过预氧化预聚处理制备。将工业亚麻油在空气氛围中加热至120℃，搅拌8-10h，完成氧化预聚。
(2)分别将膏体C与膏体D加热至200摄氏度后浸渍于无纺布上，制备得到防蚀带C与高黏防蚀带D；其中，膏体与无纺布之间质量比为9:1。
(3)在打磨光滑的碳钢板表面分别包覆高黏防蚀带C与D，搭接55％，放入日本suga公司CYP-90型盐雾实验箱64d，定期将防蚀带剥开，记录腐蚀情况，其光学照片如图1所示。
如图可知，在高黏防蚀带C与D的保护下，盐雾试验前32d均显示了良好的耐腐蚀性能，钢片表面擦净后并未出现任何锈蚀。当盐雾测试延长至64d时，高黏防蚀带C保护下的钢铁试样表面出现了局部腐蚀并出现黄锈，而高黏防蚀带D保护下的钢铁试样仍呈现良好的金属光泽，未出现明显锈蚀。高黏防蚀带D显示了优越的腐蚀防护性能。
由上述所得高黏防蚀带以高粘度改性聚合亚麻油作为防蚀带的膏状基础化合物，大大增强了防蚀带对基底表面的附着力，增强其包覆的紧密性与位移追随性；与此同时添加复配的缓蚀剂，获得良好的腐蚀抑制效果，降低其在腐蚀环境中的腐蚀速率，采用纳米氧化铝作为绝缘剂，大大增强了防蚀带的电阻率，阻碍电子转移，抑制了电化学腐蚀的发生速率，进而获得增强的耐腐蚀性能。
Claims (4)
1.一种适用于海洋大气环境的高黏防蚀带，其特征在于：防蚀带为经高温浸渍防蚀膏后的无纺布；所述防蚀膏按重量百分比计， 高粘度改性聚合亚麻油28-30%，缓蚀剂2-3%、绝缘剂5-8%、阻燃型无机填料59-65%；
以高粘度改性聚合亚麻油作为基质，添加缓蚀剂、绝缘剂、阻燃型无机填料；
所述高粘度改性聚合亚麻油为工业亚麻油在空气氛围中加热至120℃，搅拌8h，预氧化预聚处理制备；
所述缓蚀剂为鞣酸、硬脂酸钙、硅酸钠与乙醇胺混合物，其质量份数比为1:5:0.1:0.01；所述阻燃型无机填料为氢氧化铝、氢氧化镁与有机膨润土混合物，其质量份数比为3:2:1；所述绝缘剂为纳米氧化铝，其粒径为20-100纳米。
2.按权利要求1所述的适用于海洋大气环境的高黏防蚀带，其特征在于：所述防蚀带为将无纺布浸渍于100-150℃下的防蚀膏中，浸渍0.5-2h；其中，防蚀膏与无纺布质量比为9:1。
3.一种权利要求1所述的适用于海洋大气环境的高黏防蚀带的制备方法，其特征在于：防蚀带为将无纺布浸渍于100-150℃下的防蚀膏中，浸渍0.5-2h；其中，防蚀膏与无纺布质量比为9:1；所述防蚀膏按重量百分比计，高粘度改性聚合亚麻油28-30%，缓蚀剂2-3%、绝缘剂5-8%、阻燃型无机填料59-65%；
所述高粘度改性聚合亚麻油为工业亚麻油在空气氛围中加热至120℃，搅拌8h，预氧化预聚处理制备；
所述缓蚀剂为鞣酸、硬脂酸钙、硅酸钠与乙醇胺混合物，其质量份数比为1:5:0.1:0.01；所述阻燃型无机填料为氢氧化铝、氢氧化镁与有机膨润土混合物，其质量份数比为3:2:1；所述绝缘剂为纳米氧化铝，其粒径为20-100纳米。
4.一种权利要求1所述的适用于海洋大气环境的高黏防蚀带的应用，其特征在于：所述防蚀带作为适用于海洋大气环境的高黏防蚀膏的应用。
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