CN106243910B - 一种具有耐火性能的金属防腐胶的制备和应用 - Google Patents

一种具有耐火性能的金属防腐胶的制备和应用 Download PDF

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CN106243910B
CN106243910B CN201610616088.9A CN201610616088A CN106243910B CN 106243910 B CN106243910 B CN 106243910B CN 201610616088 A CN201610616088 A CN 201610616088A CN 106243910 B CN106243910 B CN 106243910B
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杨京学
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Abstract

本发明提出一种具有耐火性能的金属防腐胶的制备方法，其是将三聚氰胺甲醛树脂加温至40～50℃，然后加入助溶剂、耐久剂、粘接剂、消泡剂、乙醇，继续升温至80～90℃，搅拌30分钟；保持温度在80～90℃加入聚合物，即得。本发明还提出所述制备方法制得的金属防腐胶及其应用。本发明提出的金属防腐胶制备方法，用有机高分子合成涂料胶，得到的产品具有不燃的性能，可在恶劣的环境条件下使用，有较好的耐久性、耐候性，能在海洋、地下恶劣条件下使用15年以上，在酸碱盐和溶液介质里，在一定温度条件下正常使用15年以上。

Description

一种具有耐火性能的金属防腐胶的制备和应用
技术领域
本发明属于涂料领域，具体涉及一种用于金属表面涂装的防腐胶。
背景技术
防止金属腐蚀的途径很多，包括采用耐蚀性能好的金属或合金材料，或者涂、镀非金属和金属保护层。在金属表面上制成保护层，借以隔开金属与腐蚀介质的接触，从而减少腐蚀。非金属保护层把有机和无机化合物涂覆在金属表面，如油漆、塑料、玻璃钢、橡胶、沥青、搪瓷、混凝土、珐琅、防锈油等。目前市场上用的涂料胶中，或者是有机材料制成，或者无机材料制成。现有的有机材料涂料胶易燃，而无机的涂料胶造价高，而且涂料胶的亮度、柔性差。
发明内容
针对本领域的不足之处，本发明提出一种聚苯乙烯A级不燃微泡天花板。
为实现本发明的目的，具体技术方案为：
一种具有耐火性能的金属防腐胶的制备方法，是将三聚氰胺甲醛树脂(MF)加温至40～50℃，然后加入助溶剂、耐久剂、阻燃剂、消泡剂、乙醇，继续升温至80～90℃，搅拌30分钟；保持温度在80～90℃加入聚合物，即得。
其中，加入的反应原料的质量份分别为三聚氰胺甲醛树脂50份，助溶剂15～25份，耐久剂8～15份、阻燃剂15～25份，消泡剂0.5～1.5份，聚合物4～8份。乙醇20～40份。
其中，所述助溶剂为氟硅酸钠或硅酸钠，所述耐久剂为季茂四醇、双酚A、丙酮-二苯胺高温缩合物、对苯二酚二苄醚或季戊四醇中的一种；所述阻燃剂为聚磷酸铵(APP)。
聚磷酸铵在聚氨酯硬泡中有很高的阻燃性、尺寸稳定性、耐水解性和耐热性，适用于金属材料的涂装。对硬质聚氨酯泡沫塑料的有毒和腐蚀性气体生成量极低，一氧化碳及氯化氢的生成量也比含卤聚氨酯泡沫塑料低得多。
其中，所述消泡剂为二甲基硅油、聚乙二醇、聚硅氧烷或聚醚改性聚二甲基硅氧烷、丙二醇甲醚醋酸酯中的一种或多种。
具体地，可采用市售的BYK系列消泡剂。例如BYK-028，BYK-025，BXK-024，根据消泡剂溶剂量和固含量的不同，调整其用量。
优选地，所述聚合物为聚乙酸乙烯酯。
本发明所述的制备方法制得的金属防腐胶。
所述金属防腐胶在金属制品的涂装中的应用，所述金属制品为航空器、车船、化工设备、输油管道、桥梁、建筑物。
所述金属防腐胶在金属制品表面的涂装方法，其是采用喷涂的方式，涂布的厚度为0.1～3mm。
本发明的有益效果在于：
本发明提出的金属防腐胶制备方法，用有机高分子合成涂料胶，得到的产品具有不燃的性能，可在恶劣的环境条件下使用，有较好的耐久性、耐候性，能在海洋、地下恶劣条件下使用15年以上，在酸碱盐和溶液介质里，在一定温度条件下正常使用15年以上。
具体实施方式
以下实施例用于说明本发明，但不应用来限制本发明的范围。
实施例中，如无特别说明，所用手段均为本领域常规技术手段。
实施例1：
原料按质量份为：三聚氰胺甲醛树脂(MF)50份，助溶剂氟硅酸钠20份，耐久剂季戊四醇10份、粘接剂聚磷酸铵20份，消泡剂BYK-280.5份，聚合物聚乙酸乙烯酯5份。乙醇(工业乙醇)30份。
将MF加温45℃加入助溶剂、耐久剂、阻燃剂、消泡剂、乙醇，继续升温至85℃，保持该温度搅拌30分钟。温度在85℃下加入聚合物聚乙酸乙烯酯，物料的粘度逐渐降低，即得适于喷涂的产品。
所得产物的粘度为涂4杯25秒(25℃)。用喷涂的方法涂在J55金属管上，涂层约1mm厚。得到的涂层光亮、耐火、耐腐蚀、抗酸碱，耐久性强。高、低温不易脱落。
涂布后的J55金属管，在10wt％氢氧化钠溶液中进行浸渍，用电化学工作站(郑州世瑞思仪器科技有限公司)进行动电位极化试验，求得腐蚀速度为0.012mm/yr。
实施例2：
原料按质量份为：三聚氰胺甲醛树脂(MF)50份，助溶剂氟硅酸钠20份，耐久剂季戊四醇10份、阻燃剂聚磷酸铵20份，消泡剂二甲基硅油0.5份，聚合物聚乙酸乙烯酯5份，工业乙醇30份。
将MF加温45℃加入助溶剂、耐久剂、粘接剂、消泡剂、乙醇，继续升温至85℃，保持该温度搅拌30分钟。温度在85℃下加入聚合物，产品即得。
所得产物的粘度为涂4杯25秒(25℃)。用喷涂的方法涂在J55金属管上，涂层约1mm厚。得到的涂层光亮、耐火、耐腐蚀、抗酸碱，耐久性强。高、低温不易脱落。
实施例3：
原料按质量份为：三聚氰胺甲醛树脂(MF)50份，助溶剂氟硅酸钠20份，耐久剂季戊四醇10份、阻燃剂聚磷酸铵18份，消泡剂BYK-251份，聚合物聚乙酸乙烯酯5份。工业乙醇30份
将MF加温45℃加入助溶剂、耐久剂、阻燃剂、消泡剂、乙醇，继续升温至85℃，保持该温度搅拌40分钟。温度在85℃下加入聚合物，产品即得。
所得产物的粘度为涂4杯22秒(25℃)。用喷涂的方法涂在J55金属管上，涂层约1mm厚。得到的涂层光亮、耐火、耐腐蚀、抗酸碱，耐久性强。高、低温不易脱落。
涂布后的J55金属管，在10wt％氢氧化钠溶液中进行浸渍，用电化学工作站(郑州世瑞思仪器科技有限公司)进行动电位极化试验，求得腐蚀速度为0.015mm/yr。
实施例4：
原料按质量份为：三聚氰胺甲醛树脂(MF)50份，助溶剂氟硅酸钠20份，耐久剂季戊四醇10份、阻燃剂聚磷酸铵22份，消泡剂BYK-241.5份，聚合物聚乙酸乙烯酯5份。工业乙醇30份
将MF加温45℃加入助溶剂、耐久剂、阻燃剂、消泡剂、乙醇，继续升温至85℃，保持该温度搅拌40分钟。温度在85℃下加入聚合物，产品即得。
所得产物的粘度为涂4杯23秒(25℃)。用喷涂的方法涂在J55金属管上，涂层约1mm厚。得到的涂层光亮、耐火、耐腐蚀、抗酸碱，耐久性强。高、低温不易脱落。涂布后的J55金属管，在10wt％氢氧化钠溶液中进行浸渍，用电化学工作站(郑州世瑞思仪器科技有限公司)进行动电位极化试验，求得腐蚀速度为0.016mm/yr。
耐火性能试验
仪器：万能试验机(名称：电子万能试验机，型号：WDW-100),JCB－2建材不燃性试验炉，试件背火面温度测量为热电偶温度传感器。依据《钢结构防火涂料通用技术条件》GB14907-2002标准，GBT9978-1999《建筑构件耐火试验方法》进行检测。
试样为302钢，试件大小为150×70×6mm，试件一面喷涂本申请实施例1-3的防腐胶的厚度均为3mm，测试耐火极限。实施例1耐火极限为15mi粘结强度大于0.2MPa
表1：性能检测结果
检测项目 实施例1 实施例2 实施例3 实施例4
涂层干燥时间/h 9 8 9 10
耐火极限/h 3 3 2 2
粘接强度/Mpa 0.4 0.4 0.3 0.3
虽然，上文中已经本发明作了详尽的描述，但在本发明基础上，可以对之作一些修改或改进，这对本领域技术人员而言是显而易见的。因此，在不偏离本发明精神的基础上所做的这些修改或改进，均属于本发明要求保护的范围。

Claims (4)

1.一种具有耐火性能的金属防腐胶的制备方法，其特征在于，是将三聚氰胺甲醛树脂加温至40～50℃，然后加入助溶剂、耐久剂、阻燃剂、消泡剂、乙醇，继续升温至80～90℃，搅拌30分钟；保持温度在80～90℃加入聚合物，即得；
其中，加入的反应原料的质量份分别为三聚氰胺甲醛树脂50份，助溶剂15～25份，耐久剂8～15份、阻燃剂15～25份，消泡剂0.5～1.5份，聚合物4～8份，乙醇20～40份，
所述助溶剂为氟硅酸钠，所述耐久剂为双酚A、丙酮-二苯胺高温缩合物、对苯二酚二苄醚或季戊四醇中的一种；所述阻燃剂为聚磷酸铵膨胀防火剂；所述聚合物为聚乙酸乙烯酯。
2.根据权利要求1所述的制备方法，其特征在于，所述消泡剂为聚硅氧烷或聚醚改性聚二甲基硅氧烷。
3.权利要求1或2所述的制备方法制得的金属防腐胶。
4.权利要求3所述金属防腐胶在金属制品表面的涂装方法，其特征在于，采用喷涂的方式，涂布的厚度为0.1～3mm。
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CN1580386A (zh) * 2004-05-20 2005-02-16 赵全玺 防腐蚀防火缆索
CN100378185C (zh) * 2006-03-29 2008-04-02 江苏京安消防设备制造有限公司 膨胀型防火胶
CN102757754B (zh) * 2011-04-29 2014-04-02 中国林业科学研究院木材工业研究所 一种阻燃胶粘剂及其制备方法
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