CN111962391B - 一种高架桥防撞墙专用护甲及其制备方法 - Google Patents

一种高架桥防撞墙专用护甲及其制备方法 Download PDF

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CN111962391B
CN111962391B CN202010862356.1A CN202010862356A CN111962391B CN 111962391 B CN111962391 B CN 111962391B CN 202010862356 A CN202010862356 A CN 202010862356A CN 111962391 B CN111962391 B CN 111962391B
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邱涛
曹俊磊
郭健
龙钰
王雨来
姚久星
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Abstract

本发明属于合金材料技术领域,具体涉及一种高架桥防撞墙专用护甲及其制备方法。所述护甲为将钢板进行热浸镀,然后表面喷涂可反光涂料;所述热浸镀所用合金为含有二氧化铈/二氧化锡纳米复合材料的铝锌热浸镀合金;所述可反光涂料为:环氧树脂、羧甲基纤维素、十二烷基二甲基苄基氯化铵、云母粉、6‑氨基己酸。本发明制备的高架桥专用护甲能够抗汽车尾气侵蚀,增强防撞墙的结构强度,耐腐蚀性好;隔热能力好,能有效的防止高温高湿天气,高架桥防撞墙由于温差变化大而引起的裂缝、收缩、膨胀等。通过安装专用护甲,可防止防撞墙碳化、防止氯离子渗透、生物侵蚀等,同时,能够防止剥落,耐冲击性能好,提高了防撞墙的工程形象。

Description

一种高架桥防撞墙专用护甲及其制备方法
技术领域
本发明属于合金材料技术领域,具体涉及一种高架桥防撞墙专用护甲及其制备方法。
背景技术
随着城市的发展,大量互通的高架桥、立交桥等也随之兴建,成为了城市独特的风景。防撞墙作为桥梁的两侧安全保障结构,其属于永久性结构。桥梁防撞墙作为桥梁的附属结构物,它不仅是重要的安全防护网,其线性、表面光洁度等也直接影响到桥梁的美观和质量。高架桥防撞墙是由钢筋混凝土浇筑而成,且含有微裂纹的特性,由于冻融、碳化作用等,极易造成防撞墙表面脱落漏筋、混凝土密实度下降,水分携带氯离子进入混凝土内部导致钢筋锈蚀,钢筋锈蚀的膨胀力造成混凝土进一步破坏,导致防撞墙残缺、松脱、出现纵向裂缝,不仅影响防撞墙的工程形象,甚至可能直接影响行车安全,造成安全隐患。
中国专利申请CN108395816A公开了一种水泥混凝土防撞墙防腐蚀涂料,其以树脂为基体,加入偶联剂等形成高聚物涂层,该类涂层易脱落,且防撞能力有限,同时,为了增加附着性,施工前需要对混凝土表面进行处理,使表面洁净、粗糙度要求均匀且对混凝土基础要求较高,且一层防腐层的保护效果欠佳,同时容易滋生霉菌等,使用年限受限。因此,研发一种耐腐蚀效果好,防护性强且持久耐用的专用护甲成为了亟待解决的问题。
发明内容
针对现有技术中存在的问题,本发明提供了一种高架桥防撞墙专用护甲。
本发明还提供了一种高架桥防撞墙专用护甲的制备方法。
为了实现上述目的,本发明所采用的技术方案为:
本发明提供了一种高架桥防撞墙专用护甲,所述护甲为将钢板进行热浸镀,然后表面喷涂可反光涂料;所述热浸镀所用合金为含有二氧化铈/二氧化锡纳米复合材料的铝锌热浸镀合金;所述铝锌热浸镀合金具体质量百分比为:铝58-60wt%、锌 35-42%、余量为二氧化铈和二氧化锡纳米复合材料;所述可反光涂料是由以下重量份原料组成:环氧树脂55-60份、羧甲基纤维素8-10份、 十二烷基二甲基苄基氯化铵0.8-1.0份、云母粉30-50份、6-氨基己酸0.3-0.45份。
本发明所使用的二氧化铈/二氧化锡纳米复合材料采用以下方法制备而成:将硝酸铈和四氯化锡溶于醇溶剂中,加入酒石酸,室温下搅拌形成均一的乳浊液,然后将其加入反应釜中,升温至120-180℃,保温反应10h后,离心过滤,然后煅烧,得复合材料。
上述醇溶剂为85%乙醇水溶液;所述硝酸铈在醇溶剂中的质量浓度为25%;所述硝酸铈和四氯化锡的摩尔比为1:1.2-1.5;所述硝酸铈和酒石酸的摩尔比为1.05-1.28:1。
进一步的,所述煅烧为以5-10℃/min的升温速率升温至500-600℃,煅烧1.5-2h。
本发明还提供了一种高架桥防撞墙专用护甲的制备方法,包括以下步骤:
(1)将熔炉首先升温至100-120℃,将按比例配置的铝锌铸锭加入至熔炉中,然后将炉温升至700℃,保温2h后,然后降温至600℃,加入二氧化铈/二氧化锡纳米复合材料,混合均匀后保温2h;
(2)将0.5钢板采用碱液清洗,除去表面杂质、油渍,然后用水清洗钢板15秒钟;
(3)将清洗干净的钢板利用助镀液助镀钢板5min,将助镀后的钢板在120℃下烘干;
(5)将烘干后的钢板浸入盛有热浸镀液的熔炉中浸镀,将热浸镀后的钢板淬火冷却,热浸镀钢板备用;
(6)将云母粉分散于乙醇水溶液中,然后加入十二烷基二甲基苄基氯化铵和6-氨基己酸,搅拌均匀后,升温至30-35℃,保温搅拌45min,然后,加入环氧树脂、羧甲基纤维素,搅拌均匀即可,得可反光涂料;
(7)将冷却后的钢板表面喷涂一层可反光涂料,烘干后即可。
进一步的,所述助镀液通过以下重量份的原料组成:150gNH4Cl、120gZnCl2、50g聚乙二醇400及1000g水。
本发明的有益效果为:
(1)本发明制备的高架桥专用护甲能够抗汽车尾气侵蚀,增强防撞墙的结构强度,耐腐蚀性好;
(2)本发明制备的专用护甲,隔热能力好,能有效的防止高温高湿天气,高架桥防撞墙由于温差变化大而引起的裂缝、收缩、膨胀等。
(3)通过安装专用护甲,可防止防撞墙碳化、防止氯离子渗透、生物侵蚀等,同时,能够防止剥落,耐冲击性能好,提高了防撞墙的工程形象。
附图说明
图1为未安装专用护甲出现脱落的高架桥防撞墙。
图2为安装专用护甲后高架桥防撞墙夜间图。
图3为带有反光条的安装专用护甲后高架桥防撞墙。
具体实施方式
下面通过具体的实施例对本发明的技术方案作进一步的解释和说明。
下述实施例中所使用的二氧化铈/二氧化锡纳米复合材料采用以下方法制备而成:将硝酸铈和四氯化锡溶于85%乙醇水溶液中,加入酒石酸,室温下搅拌形成均一的乳浊液,然后将其加入反应釜中,升温至120-180℃,保温反应10h后,离心过滤,然后以10℃/min的升温速率升温至500-600℃,煅烧2h,得复合材料;所述硝酸铈在醇溶剂中的质量浓度为25%;所述硝酸铈和四氯化锡的摩尔比为1:1.2;所述硝酸铈和酒石酸的摩尔比为1.2:1。
实施例1
铝锌热浸镀合金具体质量百分比为:铝58wt%、锌 38%、余量为二氧化铈和二氧化锡纳米复合材料;
可反光涂料配方为:环氧树脂55份、羧甲基纤维素8份、 十二烷基二甲基苄基氯化铵1.0份、云母粉38份、6-氨基己酸0.45份;
制备方法如下:
(1)将熔炉首先升温至100-120℃,将按比例配置的铝锌铸锭加入至熔炉中,然后将炉温升至700℃,保温2h后,然后降温至600℃,加入二氧化铈/二氧化锡纳米复合材料,混合均匀后保温2h;
(2)将0.5钢板采用70℃的12%氢氧化钠溶液清洗,除去表面杂质、油渍,然后用水清洗钢板15秒钟,如果表面有铁锈,则采用稀盐酸进行清洗,然后水清洗钢板出去酸液;
(3)将清洗干净的钢板利用助镀液助镀钢板5min,将助镀后的钢板在120℃下烘干;
所述助镀液通过以下重量份的原料组成:150gNH4Cl、120gZnCl2、50g聚乙二醇400及1000g水;
(5)将烘干后的钢板浸入盛有热浸镀液的熔炉中浸镀,将热浸镀后的钢板淬火冷却,热浸镀钢板备用;
(6)将云母粉分散于乙醇水溶液中,然后加入十二烷基二甲基苄基氯化铵和6-氨基己酸,搅拌均匀后,升温至30-35℃,保温搅拌45min,然后,加入环氧树脂、羧甲基纤维素,搅拌均匀即可,得可反光涂料;
(7)将冷却后的钢板表面喷涂一层可反光涂料(两面均进行喷涂),烘干后即可。
实施例2
铝锌热浸镀合金具体质量百分比为:铝60wt%、锌 35%、余量为二氧化铈和二氧化锡纳米复合材料;
可反光涂料配方为:环氧树脂58份、羧甲基纤维素8份、 十二烷基二甲基苄基氯化铵0.8份、云母粉30份、6-氨基己酸0.4份;
制备方法同实施例1。
实施例3
铝锌热浸镀合金具体质量百分比为:铝58wt%、锌 35%、余量为二氧化铈和二氧化锡纳米复合材料;
可反光涂料配方为:环氧树脂60份、羧甲基纤维素10份、 十二烷基二甲基苄基氯化铵1.0份、云母粉50份、6-氨基己酸0.45份。
制备方法同实施例1。
对比例1
铝锌热浸镀合金具体质量百分比为:铝58wt%、锌 38%、余量为二氧化铈纳米材料(制备过程不加入锡盐);
其他同实施例1。
对比例2
铝锌热浸镀合金具体质量百分比为:铝58wt%、锌 38%、余量为二氧化锡纳米材料(制备过程不加入铈盐);
其他同实施例1。
对比例3
铝锌热浸镀合金具体质量百分比为:铝58wt%、锌 42%;
其他同实施例1。
对比例4
铝锌热浸镀合金具体质量百分比为:铝58wt%、锌 38%、余量为二氧化铈和二氧化锡纳米复合材料;
可反光涂料配方为:环氧树脂55份、羧甲基纤维素8份、 十二烷基二甲基苄基氯化铵1.0份、云母粉38份;
其他同实施例1。
对比例5
铝锌热浸镀合金及可反光涂料配方同实施例1。
制备方法如下:
步骤(1)-(5)同实施例1;
(6)将云母粉分散于乙醇水溶液中,然后加入十二烷基二甲基苄基氯化铵和6-氨基己酸、环氧树脂、羧甲基纤维素,搅拌均匀即可,得可反光涂料;
(7)将冷却后的钢板表面喷涂一层可反光涂料,烘干后即可。
对比例6
铝锌热浸镀合金同实施例1,不喷涂可反光涂料。
效果实施例
(一)将实施例及对比例制备的护甲进行耐腐蚀性能检测,耐腐蚀性包括耐酸碱性、耐盐性,具体结果见表1。
表1
Figure DEST_PATH_IMAGE001
(二)将实施例及对比例制备的护甲进行隔热试验检测,选择相同的但是不热浸镀、不喷涂的钢板作为空白对照,将钢板采用100w的热霸灯照射10min,照射距离均为40cm,采用红外线测温仪检测钢板两侧的温度,只保留整数位温度,具体结果见表2。
表2
Figure 698635DEST_PATH_IMAGE002
(三)将实施例1制备的护甲进行高架桥铺设,将防撞墙表面进行简单清理后,将刚才裁剪成合适尺寸,然后涂抹胶黏剂后,铺贴于防撞墙表面,接缝处采用铆钉进行固定后,采用反光条进行密封,铺贴前如图1所示,图2-3为铺贴后图片,从图中可以看出,铺设护甲后,防撞墙美观度大幅度提升。模拟道路环境,在25℃下,大雨冲刷,在钢板表面迅速形成水滴并滑落,且不脱落。
将实施例1及对比例得到的护甲经5%的氯化钠水溶液浸泡,然后检测不同时间浸泡后的接触角变化,接触角检测采用FAT125接触角测量仪进行测试,每个试样每次测量9个水滴,每滴水约为2μL,取平均值作为检测结果,具体结果如表3所示。
表3
Figure DEST_PATH_IMAGE003

Claims (3)

1.一种高架桥防撞墙专用护甲,其特征在于,所述护甲为将钢板进行热浸镀,然后表面喷涂可反光涂料;所述热浸镀所用合金为含有二氧化铈/二氧化锡纳米复合材料的铝锌热浸镀合金;所述铝锌热浸镀合金具体质量百分比为:铝58-60wt%、锌 35-42%、余量为二氧化铈和二氧化锡纳米复合材料;所述可反光涂料是由以下重量份原料组成:环氧树脂55-60份、羧甲基纤维素8-10份、十二烷基二甲基苄基氯化铵0.8-1.0份、云母粉30-50份、6-氨基己酸0.3-0.45份;
所述二氧化铈/二氧化锡纳米复合材料采用以下方法制备而成:将硝酸铈和四氯化锡溶于醇溶剂中,加入酒石酸,室温下搅拌形成均一的乳浊液,然后将其加入反应釜中,升温至120-180℃,保温反应10h后,离心过滤,然后煅烧,得复合材料;
所述醇溶剂为85%乙醇水溶液;所述硝酸铈在醇溶剂中的质量浓度为25%;所述硝酸铈和四氯化锡的摩尔比为1:1.2-1.5;所述硝酸铈和酒石酸的摩尔比为1.05-1.28:1;
所述煅烧为以5-10℃/min的升温速率升温至500-600℃,煅烧1.5-2h。
2.一种如权利要求1所述的高架桥防撞墙专用护甲的制备方法,其特征在于,包括以下步骤:
(1)将熔炉首先升温至100-120℃,将按比例配置的铝锌铸锭加入至熔炉中,然后将炉温升至700℃,保温2h后,然后降温至600℃,加入二氧化铈/二氧化锡纳米复合材料,混合均匀后保温2h;
(2)将0.5钢板采用碱液清洗,除去表面杂质、油渍,然后用水清洗钢板15秒钟;
(3)将清洗干净的钢板利用助镀液助镀钢板5min,将助镀后的钢板在120℃下烘干;
(5)将烘干后的钢板浸入盛有热浸镀液的熔炉中浸镀,将热浸镀后的钢板淬火冷却,热浸镀钢板备用;
(6)将云母粉分散于乙醇水溶液中,然后加入十二烷基二甲基苄基氯化铵和6-氨基己酸,搅拌均匀后,升温至30-35℃,保温搅拌45min,然后,加入环氧树脂、羧甲基纤维素,搅拌均匀即可,得可反光涂料;
(7)将冷却后的钢板表面喷涂一层可反光涂料,烘干后即可。
3.根据权利要求1所述的制备方法,其特征在于,所述助镀液通过以下重量份的原料组成:150gNH4Cl、120gZnCl2、50g聚乙二醇400及1000g水。
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