CN112191484A - 一种防腐蚀消防栓喷涂工艺 - Google Patents
一种防腐蚀消防栓喷涂工艺 Download PDFInfo
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Abstract
本发明涉及消防栓技术领域,提供一种防腐蚀消防栓喷涂工艺,消防栓的内壁依次设有第一防腐层、第一防水层,所述消防栓的外壁从里向外依次设有第二防腐层、第二防水层,喷涂工艺包括以下制备步骤:(1)表面预处理;(2)制备防腐涂料;(3)制备防水涂料;(4)喷涂。本发明解决现有技术消防栓结构简单,易受环境干扰发生腐蚀老化,缩短其使用寿命的问题。
Description
技术领域
本发明涉及消防栓技术领域,尤其涉及一种防腐蚀消防栓喷涂工艺。
背景技术
消防栓,正式叫法为消火栓,一种固定式消防设施,主要作用是控制可燃物、隔绝助燃物、消除着火源。分室内消火栓和室外消火栓。室外消火栓是设置在建筑物外面消防给水管网上的供水设施,主要供消防车从市政给水管网或室外消防给水管网取水实施灭火,也可以直接连接水带、水枪出水灭火,是扑救火灾的重要消防设施之一。
中国专利号:201822228032.3公开了一种水压稳定且防腐性能强的消防栓,包括底座,所述底座的顶部固定连接有立柱,所述立柱的外部等距离焊接有出水管,所述出水管的外部螺纹连接有外盖,所述立柱的顶部固定连接有顶帽。该水压稳定且防腐性能强的消防栓,通过导流块将水流打散,降低冲击力,水流的冲击会带动扇叶旋转,从而带动旋转杆旋转,挡板脱离导管外部开设的透水孔使导管内部的水流进立柱内部,扇叶会在水压的作用下不停的旋转,会使透水孔一直保持堵住或被堵住的状态,可以有效的控制水的水压,防止过多的水流出造成浪费,防护层和防腐层可以增加消防栓的强度和防腐蚀度,增加消防栓的使用寿命。该实用新型的消防栓解决了现有的室外消防栓结构简单,易受环境影响导致消防栓外壁被侵蚀老化的问题,但该实用新型没考虑到消防栓在长期使用过程中,消防栓内表面直接暴露在潮湿环境下易发生化学反应,会出现腐蚀老化的现象。
发明内容
因此,针对以上内容,本发明提供一种防腐蚀消防栓喷涂工艺,解决现有技术消防栓结构简单,易受环境干扰发生腐蚀老化,缩短其使用寿命的问题。
为达到上述目的,本发明是通过以下技术方案实现的:
一种防腐蚀消防栓喷涂工艺,所述消防栓的内壁依次设有第一防腐层、第一防水层,所述消防栓的外壁从里向外依次设有第二防腐层、第二防水层,喷涂工艺包括以下制备步骤:
(1)表面预处理
对消防栓表面进行除油、粗糙化处理;
(2)制备防腐涂料
首先分别称取以下重量份的各原料:环氧树脂32~48份、环氧改性丙烯酸树脂12~18份、固化剂20~30份、流平剂1~2份、无机填料20~40份、溶剂5~10份、分散剂0.8~1.5份、丙二醇丁醚0.5~1份,然后将各原料充分搅拌混合至均匀,得到防腐涂料;
(3)制备防水涂料
首先分别称取以下重量份的各原料:环氧树脂20~30份、硅丙乳液15~24份、苯丙乳液6~12份、固化剂12~18份、增稠剂1~1.8份、颜料5~15份、助剂1.5~3份,然后将各原料充分搅拌混合至均匀,得到防水涂料;
(4)喷涂
在消防栓的内壁上先喷涂上防腐涂料,形成第一防腐层,待干后在第一防腐层表面喷涂防水涂料,形成第一防水层;在消防栓的外壁上先喷涂上防腐涂料,形成第二防腐层,待干后在第二防腐层表面喷涂防水涂料,形成第二防水层。
进一步的改进是:所述表面预处理中除油的具体操作为:先用浓度为1%的氢氧化钠清洗消防栓20~30min,清洗温度为50~60℃,然后再将消防栓放入乙醇和丙酮的混合溶液中,超声清洗30~50min,混合溶液由乙醇和丙酮按质量比1~3:1混合而成。
进一步的改进是:步骤(1)中粗糙化处理是用砂纸对消防栓的内壁和外壁进行打磨,增强消防栓内壁和外壁的粗糙度。
进一步改进的是:所述环氧树脂为E-51、E-44、E-20中的任意一种。
进一步的改进是:所述无机填料为硅灰石粉、三聚磷酸铝、硫酸钡中的任意一种或两种以上以任意比混合而成。
进一步的改进是:所述固化剂为聚酰胺类固化剂、聚醚胺固化剂、脂环胺固化剂中的任意一种。
进一步的改进是:所述溶剂为二甲苯、环己酮、醋酸丁酯和乙二醇乙醚中的任意一种。
进一步的改进是:所述分散剂为烷基酚聚氧乙烯醚或聚乙二醇。
进一步的改进是:步骤3)中防水涂料选用的助剂为流平剂、消泡剂、润湿剂中的至少一种。
进一步的改进是:所述第二防水层的配方中还添加有0.6~1.2份紫外线吸收剂。
通过采用前述技术方案,本发明的有益效果是:
本申请在消防栓的内壁依次设有第一防腐层、第一防水层,消防栓的外壁从里向外依次设有第二防腐层、第二防水层,其中第一防腐层和第二防腐层的设置可以显著提高消防栓的防腐蚀性能,阻止腐蚀介质对消防栓的侵蚀;第一防水层和第二防水层的设置可以防止水向内渗透,避免消防栓直接暴露在潮湿环境下,腐蚀老化的速度减缓。本发明在各层涂料的共同作用下,增强了消防栓的防腐蚀性,延长了消防栓的使用寿命。本发明的防腐涂料通过大量优化实验,确定了最佳的原料组合及其配比,制备得到的防腐涂料附着力好和机械强度,其中环氧树脂本身具有优异的耐腐蚀性和耐化学品性,与环氧改性丙烯酸树脂交联固化,可以提高整个体系的交联密度,从而增强涂料的致密性,使外界的水或氧气难以穿透涂料与消防栓表面接触;无机填料安全无毒,添加后与其他原料相互配合,进一步增强了涂料的防腐蚀性。在防腐层表面喷涂防水涂料,可以起到二次保护的目的,阻止水以及其他腐蚀介质对防腐层的破坏,影响第一防腐层和第二防腐层发挥应有的作用。
本申请在喷涂防腐涂料和防水涂料之前,对消防栓的内壁和外壁进行预处理,包括除油和粗糙化处理,其目的在于提高防腐涂料与消防栓表面的结合强度。
进一步的,在第二防水层的涂料配方中添加紫外线吸收剂,可以有效吸收照射到消防栓表面的紫外线,防止第二防水层中的原料组分化学键断裂,整个体系性质发生根本变化,造成易黄变、质脆、机械强度下降等问题,发挥不了应有的作用。本发明的第二防水层改善了消防栓受紫外线长时间照射,老化速度加快的现象,使得消防栓具有抗老化的性能。
具体实施方式
以下将结合具体实施例来详细说明本发明的实施方式,借此对本发明如何应用技术手段来解决技术问题,并达成技术效果的实现过程能充分理解并据以实施。
若未特别指明,实施例中所采用的技术手段为本领域技术人员所熟知的常规手段,所采用的试剂和产品也均为可商业获得的。所用试剂的来源、商品名以及有必要列出其组成成分者,均在首次出现时标明。
实施例一
一种防腐蚀消防栓喷涂工艺,所述消防栓的内壁依次设有第一防腐层、第一防水层,所述消防栓的外壁从里向外依次设有第二防腐层、第二防水层,喷涂工艺包括以下制备步骤:
(1)表面预处理
对消防栓表面进行除油、粗糙化处理;其中除油处理方式为:先用浓度为1%的氢氧化钠清洗消防栓20min,清洗温度为50℃,然后再将消防栓放入乙醇和丙酮的混合溶液中,超声清洗30min,混合溶液由乙醇和丙酮按质量比1:1混合而成;
除油后的消防栓用砂纸进行打磨,增强消防栓内壁和外壁的粗糙度;
(2)制备防腐涂料
首先分别称取以下重量份的各原料:环氧树脂E-5132份、环氧改性丙烯酸树脂12份(苏州市森菲达化工有限公司生产,型号sf-101)、聚醚胺固化剂D23020份、BYK-306流平剂1份、硅灰石粉20份、乙二醇乙醚5份、烷基酚聚氧乙烯醚0.8份、丙二醇丁醚0.5份,然后将各原料充分搅拌混合至均匀,得到防腐涂料;
(3)制备防水涂料
首先分别称取以下重量份的各原料:环氧树脂E-5120份、硅丙乳液15份、苯丙乳液6份、聚醚胺固化剂D23012份、增稠剂1份、铁红5份、BYK-306流平剂1份、有机硅消泡剂0.5份,然后将各原料充分搅拌混合至均匀,得到防水涂料;
(4)喷涂
在消防栓的内壁上先喷涂上防腐涂料,形成第一防腐层,待干后在第一防腐层表面喷涂防水涂料,形成第一防水层;在消防栓的外壁上先喷涂上防腐涂料,形成第二防腐层,在步骤(3)制备的防水涂料中添加0.6份紫外线吸收剂UV-O,搅拌混合均匀后喷涂在第二防腐层上,形成第二防水层。
采用静电喷涂的方法进行喷涂,静电喷涂过程中,电压为32~54KV,喷漆的喷枪空气压力为0.36~0.48MPa,喷枪与消防栓喷涂表面的距离为22~28cm。第一防水层和第二防水层的厚度≥50μm,第一防腐层和第二防腐层的厚度≥40μm。本实施例中,喷涂电压为32KV,喷漆的喷枪空气压力为0.36MPa,喷枪与消防栓喷涂表面的距离为22cm。第一防水层和第二防水层的厚度为50μm,第一防腐层和第二防腐层的厚度为40μm。
与空气喷涂、无空气喷涂等其他喷涂方式相比,静电喷涂具有明显优势,具体表现在:第一,在高压静电场中喷涂,漆雾的扩散范围小,改善喷涂作业环境,降低空气污染。第二,喷涂时涂料带有负电荷,沿着电场方向涂覆在工件表面,发生涂料射流反弹和漆雾飞散现象的可能性低,从而提高了涂料的利用率。第三,喷涂效果好,涂层平整均匀,附着力好。
在步骤(1)粗糙化处理后,通过静电枪对消防栓进行静电除尘,实现更好的喷涂效果。
实施例二
一种防腐蚀消防栓喷涂工艺,所述消防栓的内壁依次设有第一防腐层、第一防水层,所述消防栓的外壁从里向外依次设有第二防腐层、第二防水层,喷涂工艺包括以下制备步骤:
(1)表面预处理
对消防栓表面进行除油、粗糙化处理;其中除油处理方式为:先用浓度为1%的氢氧化钠清洗消防栓25min,清洗温度为55℃,然后再将消防栓放入乙醇和丙酮的混合溶液中,超声清洗40min,混合溶液由乙醇和丙酮按质量比2:1混合而成;
除油后的消防栓用砂纸进行打磨,增强消防栓内壁和外壁的粗糙度;
(2)制备防腐涂料
首先分别称取以下重量份的各原料:环氧树脂E-4440份、环氧改性丙烯酸树脂15份(苏州市森菲达化工有限公司生产,型号sf-106)、聚酰胺固化剂65025份、BYK-300流平剂1.5份、三聚磷酸铝30份、醋酸丁酯8份、聚乙二醇4000.2份、丙二醇丁醚0.8份,然后将各原料充分搅拌混合至均匀,得到防腐涂料;
(3)制备防水涂料
首先分别称取以下重量份的各原料:环氧树脂E-4425份、硅丙乳液20份、苯丙乳液9份、聚酰胺固化剂65015份、增稠剂1.4份、铁红10份、有机硅消泡剂1份、BYK-101润湿剂1.2份,然后将各原料充分搅拌混合至均匀,得到防水涂料;
(4)喷涂
在消防栓的内壁上先喷涂上防腐涂料,形成第一防腐层,待干后在第一防腐层表面喷涂防水涂料,形成第一防水层;在消防栓的外壁上先喷涂上防腐涂料,形成第二防腐层,在步骤(3)制备的防水涂料中添加0.9份紫外线吸收剂UV-O,搅拌混合均匀后喷涂在第二防腐层上,形成第二防水层。采用静电喷涂的方法进行喷涂,静电喷涂过程中,喷涂电压为43KV,喷漆的喷枪空气压力为0.42MPa,喷枪与消防栓喷涂表面的距离为25cm。第一防水层和第二防水层的厚度为55μm,第一防腐层和第二防腐层的厚度为45μm。
实施例三
一种防腐蚀消防栓喷涂工艺,所述消防栓的内壁依次设有第一防腐层、第一防水层,所述消防栓的外壁从里向外依次设有第二防腐层、第二防水层,喷涂工艺包括以下制备步骤:
(1)表面预处理
对消防栓表面进行除油、粗糙化处理;其中除油处理方式为:先用浓度为1%的氢氧化钠清洗消防栓30min,清洗温度为60℃,然后再将消防栓放入乙醇和丙酮的混合溶液中,超声清洗50min,混合溶液由乙醇和丙酮按质量比3:1混合而成;
除油后的消防栓用砂纸进行打磨,增强消防栓内壁和外壁的粗糙度;
(2)制备防腐涂料
首先分别称取以下重量份的各原料:环氧树脂E-2048份、环氧改性丙烯酸树脂18份(苏州市森菲达化工有限公司生产,型号sf-101)、脂环胺固化剂30份、BYK-373流平剂2份、硫酸钡40份、环己酮10份、烷基酚聚氧乙烯醚1.5份、丙二醇丁醚1份,然后将各原料充分搅拌混合至均匀,得到防腐涂料;
(3)制备防水涂料
首先分别称取以下重量份的各原料:环氧树脂E-2030份、硅丙乳液24份、苯丙乳液12份、脂环胺固化剂18份、增稠剂1.8份、铁红15份、BYK-373流平剂1.5份、BYK-P104润湿剂1.5份,然后将各原料充分搅拌混合至均匀,得到防水涂料;
(4)喷涂
在消防栓的内壁上先喷涂上防腐涂料,形成第一防腐层,待干后在第一防腐层表面喷涂防水涂料,形成第一防水层;在消防栓的外壁上先喷涂上防腐涂料,形成第二防腐层,在步骤(3)制备的防水涂料中添加1.2份紫外线吸收剂UV-O,搅拌混合均匀后喷涂在第二防腐层上,形成第二防水层。采用静电喷涂的方法进行喷涂,静电喷涂过程中,电压为54KV,喷漆的喷枪空气压力为0.48MPa,喷枪与消防栓喷涂表面的距离为28cm。第一防水层和第二防水层的厚度为60μm,第一防腐层和第二防腐层的厚度为50μm。
性能测试
对实施例一至三制备得到的防腐涂料进行附着力、耐盐水性以及耐中性盐雾性能的测试,测试结果见表1。其中附着力根据GB/T 9286-1998进行检测;耐中性盐雾试验根据GB/T 1771-1991的进行检测;耐盐水性根据GB/T 1763-89中的常温耐盐水法进行测定,氯化钠的浓度为3%,涂漆样板浸泡30d后观察漆膜有无剥落、起皱、起泡、生锈、变色等现象。实施例一至三制备得到的防水涂料进行不透水试验,水压0.3MPa,保持压力30min后观察透水情况,测试结果见表1。
表1
实施例一 | 实施例二 | 实施例三 | |
附着力/级 | 0 | 0 | 0 |
耐盐水性 | 无变化 | 无变化 | 无变化 |
盐雾试验 | >5000h | >5000h | >5000h |
透水性 | 不透水 | 不透水 | 不透水 |
由表1可知,本发明制备得到的防腐涂料附着力好,具有良好的耐盐水性和耐盐雾性,涂覆在消防栓表面可以起到很好地防腐蚀效果。制备得到的防水涂料防水性好。
以上所记载,仅为利用本创作技术内容的实施例,任何熟悉本项技艺者运用本创作所做的修饰、变化,皆属本创作主张的专利范围,而不限于实施例所揭示者。
Claims (9)
1.一种防腐蚀消防栓喷涂工艺,其特征在于:所述消防栓的内壁依次设有第一防腐层、第一防水层,所述消防栓的外壁从里向外依次设有第二防腐层、第二防水层,喷涂工艺包括以下制备步骤:
(1)表面预处理
对消防栓表面进行除油、粗糙化处理;
(2)制备防腐涂料
首先分别称取以下重量份的各原料:环氧树脂32~48份、环氧改性丙烯酸树脂12~18份、固化剂20~30份、流平剂1~2份、无机填料20~40份、溶剂5~10份、分散剂0.8~1.5份、丙二醇丁醚0.5~1份,然后将各原料充分搅拌混合至均匀,得到防腐涂料;
(3)制备防水涂料
首先分别称取以下重量份的各原料:环氧树脂20~30份、硅丙乳液15~24份、苯丙乳液6~12份、固化剂12~18份、增稠剂1~1.8份、颜料5~15份、助剂1.5~3份,然后将各原料充分搅拌混合至均匀,得到防水涂料;
(4)喷涂
在消防栓的内壁上先喷涂上防腐涂料,形成第一防腐层,待干后在第一防腐层表面喷涂防水涂料,形成第一防水层;在消防栓的外壁上先喷涂上防腐涂料,形成第二防腐层,待干后在第二防腐层表面喷涂防水涂料,形成第二防水层。
2.根据权利要求1所述的一种防腐蚀消防栓喷涂工艺,其特征在于:所述表面预处理中除油的具体操作为:先用浓度为1%的氢氧化钠清洗消防栓20~30min,清洗温度为50~60℃,然后再将消防栓放入乙醇和丙酮的混合溶液中,超声清洗30~50min,混合溶液由乙醇和丙酮按质量比1~3:1混合而成。
3.根据权利要求1所述的一种防腐蚀消防栓喷涂工艺,其特征在于:步骤(1)中粗糙化处理是用砂纸对消防栓的内壁和外壁进行打磨,增强消防栓内壁和外壁的粗糙度。
4.根据权利要求1所述的一种防腐蚀消防栓喷涂工艺,其特征在于:所述无机填料为硅灰石粉、三聚磷酸铝、硫酸钡中的任意一种或两种以上以任意比混合而成。
5.根据权利要求1所述的一种防腐蚀消防栓喷涂工艺,其特征在于:所述固化剂为聚酰胺类固化剂、聚醚胺固化剂、脂环胺固化剂中的任意一种。
6.根据权利要求1所述的一种防腐蚀消防栓喷涂工艺,其特征在于:所述溶剂为二甲苯、环己酮、醋酸丁酯和乙二醇乙醚中的任意一种。
7.根据权利要求1所述的一种防腐蚀消防栓喷涂工艺,其特征在于:所述分散剂为烷基酚聚氧乙烯醚或聚乙二醇。
8.根据权利要求1所述的一种防腐蚀消防栓喷涂工艺,其特征在于:步骤3)中防水涂料选用的助剂为流平剂、消泡剂、润湿剂中的至少一种。
9.根据权利要求1所述的一种防腐蚀消防栓喷涂工艺,其特征在于:所述第二防水层的配方中还添加有0.6~1.2份紫外线吸收剂。
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