CN108504260A - 一种耐辐射、抗强酸、双重固化重防腐涂料 - Google Patents
一种耐辐射、抗强酸、双重固化重防腐涂料 Download PDFInfo
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Abstract
本发明公开一种耐辐射、抗强酸、双重固化重防腐涂料。本发明所述防腐涂料由乙烯基酯浆料为甲组分和固化原料为乙组分组成,其中甲组分由乙烯基酯树脂、钛白粉、云母粉、气相二氧化硅、苯乙烯、流变助剂、消泡剂、玻璃鳞片等组成,乙组分由促进剂和引发剂及聚氨酯固化剂组成。本发明通过双重交联方式引入,使得本发明所述涂料具有抗介质渗透性强、耐辐射性好、防腐性好及突出的耐强酸等优点,且制备工艺简单、原料易得和产品性能稳定,适合大规模的工业化生产。
Description
技术领域
本发明涉及一种常温固化、双重交联、低收缩气干性好的重防腐涂料,属于涂料领域,具体地说是一种耐辐射、抗强酸、双重固化重防腐涂料。
背景技术
乙烯基酯树脂是一种由环氧树脂和甲基丙烯酸反应制得的自由基引发热固性树脂,它的分子两端含有乙烯基团,中间骨架为环氧树脂结构,因此既具有环氧树脂优异的力学性能、耐腐蚀性能、耐高温性能,又有不饱和聚酯树脂的易流动性,快速固化性。分子键末端的甲基丙烯酸基团也提高了它耐日光老化性能。
现有的重防腐涂料常为环氧聚氨酯型,为双组份单固化交联型,产品具有较好的防腐性,但漆膜耐强酸性差;单纯的乙烯基酯树脂具有较好的防腐效果,但有气干性差、固化收缩率大及漆膜脆性较大等缺陷,从而导致了由其制备的涂料也具有类似缺陷,从而限制了其在重防腐行业中应用。本发明旨在提供一种耐辐射、抗强酸、双重固化重防腐涂料。
发明内容
本发明的目的在于提出一种耐辐射、抗强酸、双重固化重防腐涂料,该涂料通过不饱和双键和聚氨酯固化剂双重交联固化,具有抗介质渗透性强、耐辐射性好、防腐性好及突出的耐强酸等优点,解决了原有乙烯基酯重防腐涂料的气干性差、固化收缩率大的弊端,并通过固化剂调整涂膜的性能。
为实现上述目的,本发明所述一种耐辐射、抗强酸、双重固化重防腐涂料,其特征在于:由甲、乙两部分组成,甲组分与乙组分的质量比为3:1~8:1;
所述甲组分由以下质量份数的原料组成:
醋酸丁酯用量满足施工需要即可;
所述乙组分由以下质量份数的原料组成:
引发剂 8~15份
促进剂 5~12份
固化剂 60~90份。
所述乙烯基酯树脂由以下质量份数的原料组成:
所述甲组分中流变助剂为BYK-410;所述消泡剂为BYK-054;所述溶剂为苯乙烯。
所述乙组分中引发剂为过氧化甲乙酮;促进剂为环烷酸钴;固化剂为聚氨酯固化剂。
所述乙烯基酯树脂中催化剂为N-N二甲基苯胺。
所述乙烯基酯树脂中阻聚剂为对苯二酚。
所述甲组分的制备方法,其特征在于:按量称取乙烯基酯树脂、钛白粉、云母粉、气相二氧化硅、溶剂及流变助剂、消泡剂,加入搪瓷拉缸高速搅拌均匀成混料,将混料研磨轧浆,用刮板细度计控制细度至30μm以下,边搅拌边加入按量称取的玻璃鳞片搅拌至分散均匀,得到甲组分。
所述一种耐辐射、抗强酸、双重固化重防腐涂料的制备方法,实现步骤如下:
(1)在反应釜中加入环氧树脂、催化剂和阻聚剂,搅拌溶解,升温至80℃加入甲基丙烯酸,升温至110~130℃,保温反应至酸值达到<10mgKOH/g,得到乙烯基酯,降温,用溶剂稀释,稀释后固体质量占总质量百分数的60-70%,即得到乙烯基酯树脂;
(2)将制备得到的乙烯基酯树脂与钛白粉、云母粉、气相二氧化硅及流变助剂、消泡剂等加入拉缸中高速搅拌,分散均匀,用砂磨机轧浆至细度30μm以下,加入玻璃鳞片搅拌至分散均匀,得到甲组分;
(3)将促进剂、引发剂、固化剂混合,搅拌均匀得到乙组分;
(5)使用前将甲组分和乙组分按质量比为3:1~8:1混合搅拌均匀,用醋酸丁酯稀释至施工粘度,静止15min制得。
所述一种耐辐射、抗强酸、双重固化重防腐涂料的使用方法,使用前将甲组分和乙组分混合搅拌均匀,用醋酸丁酯稀释至施工粘度,静止15min后进行刷涂、喷涂和辊涂施工。
本发明所述一种耐辐射、抗强酸、双重固化重防腐涂料,其有益效果在于:该防腐涂料以自制的乙烯基酯树脂为基料,以钛白、云母、玻璃鳞片及气相二氧化硅等为颜填料,以过氧化物为引发剂,环烷酸钴为促进剂,聚氨酯固化剂为双组份固化交联剂,解决了原有乙烯基酯玻璃鳞片重防腐涂料的气干性差、固化收缩率大及较脆等弊端,具有固化完全彻底,抗介质渗透性强、耐磨性优等优点。且制备工艺简单、原料易得和性能稳定,适合大规模的工业化生产。
具体实施方式
实施例1
本发明所述一种耐辐射、抗强酸、双重固化重防腐涂料的制备方法,步骤如下:
(1)在反应釜中加入46.6kg环氧树脂、0.3kg催化剂和0.06kg阻聚剂,搅拌溶解,升温至80℃加入17.7kg甲基丙烯酸,升温至110~130℃,保温反应至酸值达到合适值,降温至80℃加入34.8kg苯乙烯对稀,搅匀,得到乙烯基酯树脂;
(2)将57.5kg乙烯基酯树脂、12.7kg钛白粉、3.8kg云母粉、2.4kg气相二氧化硅和4.7kg苯乙烯加入搪瓷缸高速搅拌,分散均匀,在锥形磨上研磨至细度30μm以下,加入0.3kg流变助剂、0.17kg消泡剂,边搅拌边加入7kg玻璃鳞片搅拌搅拌至分散均匀,得到甲组分;
(3)将3kg引发剂和2kg促进剂加到拉缸中,搅拌混合均匀即可得到耐辐射、抗强酸、双重固化重防腐涂料乙组分一;
(4)将25kg聚氨酯固化剂单独包装作为耐辐射、抗强酸、双重固化重防腐涂料乙组分二;
(5)使用前将甲组分与由乙组分一、乙组分二组成的乙组分混合搅拌均匀,甲组分与乙组分质量比为3:1,用丙烯酸丁酯稀释至施工粘度,静止15min,可刷涂、喷涂和辊涂施工。
实施例2~3制备工艺与实施例1相同,其配方如下表所示:
(1)乙烯基酯树脂的配方:单位:kg
(2)耐辐射、抗强酸、双重固化重防腐涂料甲组分的配方:单位:kg
(3)耐辐射、抗强酸、双重固化重防腐涂料乙组分的配方:单位:kg
(4)耐辐射、抗强酸、双重固化重防腐涂料乙组分一的配方:单位:kg
(5)耐辐射、抗强酸、双重固化重防腐涂料乙组分二的配方:单位:kg
(6)使用前将甲组分和乙组分按一定质量比混合搅拌均匀,用丙烯酸丁酯稀释至施工粘度,静止15min,可刷涂、喷涂和辊涂施工。
表1乙烯基防腐涂料技术指标
表2乙烯基涂料涂膜耐部分液态介质腐蚀数据
品名 | 浓度(%) | 温度(℃) | 时间(月) | 耐腐蚀性能 |
硫酸 | 65 | 25 | 6 | 耐 |
硫酸 | 5 | 80 | 3 | 耐 |
硝酸 | 20 | 25 | 6 | 耐 |
氢氧化钠 | 20 | 25 | 6 | 耐 |
氢氧化钠 | 5 | 80 | 3 | 耐 |
汽油 | 25 | 12 | 耐 | |
盐酸 | 10 | 25 | 6 | 耐 |
氯化钠 | 饱和 | 80 | 3 | 耐 |
尿素 | 饱和 | 25 | 6 | 耐 |
氨水 | 5 | 25 | 6 | 耐 |
Claims (9)
1.一种耐辐射、抗强酸、双重固化重防腐涂料,其特征在于:由甲、乙两部分组成,甲组分与乙组分的质量比为3:1~8:1;
所述甲组分由以下质量份数的原料组成:
醋酸丁酯用量满足施工需要即可;
所述乙组分由以下质量份数的原料组成:
引发剂 8~15份
促进剂 5~12份
固化剂 60~90份。
2.根据权利要求1所述一种耐辐射、抗强酸、双重固化重防腐涂料,其特征在于:所述乙烯基酯树脂由以下质量份数的原料组成:
3.根据权利要求1所述一种耐辐射、抗强酸、双重固化重防腐涂料,其特征在于:所述甲组分中流变助剂为BYK-410;所述消泡剂为BYK-054;所述溶剂为苯乙烯。
4.根据权利要求1所述一种耐辐射、抗强酸、双重固化重防腐涂料,其特征在于:所述乙组分中引发剂为过氧化甲乙酮,促进剂为环烷酸钴,固化剂为聚氨酯固化剂。
5.根据权利要求2所述一种耐辐射、抗强酸、双重固化重防腐涂料,其特征在于:所述乙烯基酯树脂中催化剂为N-N二甲基苯胺。
6.根据权利要求2所述一种耐辐射、抗强酸、双重固化重防腐涂料,其特征在于:所述乙烯基酯树脂中阻聚剂为对苯二酚。
7.根据权利要求1所述一种耐辐射、抗强酸、双重固化重防腐涂料,其特征在于:所述甲组分的制备方法,其特征在于:按量称取乙烯基酯树脂、钛白粉、云母粉、气相二氧化硅、溶剂及流变助剂、消泡剂,加入搪瓷拉缸高速搅拌均匀成混料,将混料研磨轧浆,用刮板细度计控制细度至30μm以下,边搅拌边加入按量称取的玻璃鳞片搅拌至分散均匀,得到甲组分。
8.根据权利要求1-7中任一项所述一种耐辐射、抗强酸、双重固化重防腐涂料的制备方法,其特征在于:实现步骤如下:
(1)在反应釜中加入环氧树脂、催化剂和阻聚剂,搅拌溶解,升温至80℃加入甲基丙烯酸,升温至110~130℃,保温反应至酸值达到<10mgKOH/g,得到乙烯基酯,降温,用溶剂稀释,稀释后固体质量占总质量百分数的60-70%,即得到乙烯基酯树脂;
(2)将制备得到的乙烯基酯树脂与钛白粉、云母粉、气相二氧化硅及流变助剂、消泡剂等加入拉缸中高速搅拌,分散均匀,用砂磨机轧浆至细度30μm以下,加入玻璃鳞片搅拌至分散均匀,得到甲组分;
(3)将促进剂、引发剂、固化剂混合,搅拌均匀得到乙组分;
(5)使用前将甲组分和乙组分按质量比为3:1~8:1混合搅拌均匀,用醋酸丁酯稀释至施工粘度,静止15min制得。
9.根据权利要求1-8任一项所述一种耐辐射、抗强酸、双重固化重防腐涂料的使用方法,其特征在于:使用前将甲组分和乙组分混合搅拌均匀,用醋酸丁酯稀释至施工粘度,静止15min后进行刷涂、喷涂和辊涂施工。
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