CN106519870A - 一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂料及其制备方法 - Google Patents

一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂料及其制备方法 Download PDF

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CN106519870A
CN106519870A CN201610905313.0A CN201610905313A CN106519870A CN 106519870 A CN106519870 A CN 106519870A CN 201610905313 A CN201610905313 A CN 201610905313A CN 106519870 A CN106519870 A CN 106519870A
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孔华英
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Abstract

本发明公开了一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂料及其制备方法,该涂料中加入的石油沥青基纳米碳球经超支化聚醚乳液预分散后与氟碳树脂具有更好的浸润性,在乳液中达到均匀稳定的分散状态,这种纳米碳球具有优良的电化学防腐性能,可有效的延缓金属底盘的锈蚀,同时还能增强氟碳树脂的力学性能,增强膜层强度和韧性,膜层抗外界磨损能力更强,最终实现了环保和长效防锈的目标,较之传统的水性涂料具有突出的应用优势。

Description

一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂 料及其制备方法
技术领域
本发明涉及水性防锈涂料技术领域,尤其涉及一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂料及其制备方法。
背景技术
顾名思义,汽车底盘处于汽车底部,其一直处于较为阴暗的环境中,且在汽车行驶过程中会受到雨水、沙石的冲击,导致表面出现破损,加速锈蚀,严重降低底盘的使用寿命,因此加强汽车底盘的防锈至关重要。
最直接有效的底盘防锈措施是在底盘上喷涂防锈漆,传统的底盘防锈漆主要为油性涂料,油性涂料的优点在于其形成的涂层较厚,使用寿命较长,但是其致命的缺点在于污染较大,不符合现代环保的生产要求。反观近几年来广为流行的水性涂料在环保性能方面能满足要求,其机械性能在某些方面强于油性涂料,但是常规的水性防锈涂料容易脱落,与基材间的附着力较差,透水性大,封闭性不足,从而导致其防锈效果有限。
水性氟碳树脂因其独特的结构,在耐久性、耐腐蚀性、耐污性等方面较之其它类水性涂料有突出的优势,在汽车底盘防锈方面有良好的应用前景。《新型水性氟碳防腐涂料的性能研究》一文以氟碳乳液作为成膜基料,复合铁钛粉和改性磷酸锌作为主要防腐颜料,制得的涂料表现出良好的密封效果和防腐蚀性能,但是氟碳树脂也存在一些缺陷,如固化温度较高、固化时间较长、附着性差、与填料的润湿性较差、成本较高等等问题,需要做进一步的改性处理,以提高其市场应用价值。
发明内容
本发明目的就是为了弥补已有技术的缺陷,提供一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂料及其制备方法。
本发明是通过以下技术方案实现的:
一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂料,该涂料由以下重量份的原料制成:甲基丙烯酸三氟乙酯10-15、甲基丙烯酸羟乙酯8-12、丙烯酸3-5、石油沥青基纳米碳球2-3、十二烷基硫酸钠0.1-0.2、烷基酚聚氧乙烯醚0.4-0.5、过硫酸钾1-2、去离子水20-30、超支化聚醚乳液12-15、消泡剂0.4-0.5、防锈颜料3-5、十二碳醇酯1-2。
所述的超支化聚醚乳液由以下重量份的原料制成:异佛尔酮二异氰酸酯8-12、二月桂酸二丁基锡0.1-0.2、N,N-二甲基甲酰胺12-16、环氧丙烷12-15、聚乙二醇单甲醚3-5、缩水甘油醚2-5、双金属氰化物催化剂0.8-1.2、去离子水40-50、十二烷基磺酸钠0.4-0.5,制备方法为:
(1)先取6-8重量份的异佛尔酮二异氰酸酯、双金属氰化物催化剂投入反应釜中,真空脱水处理后在氮气氛围下搅拌升温至132-138℃,随后滴加1/3重量份的环氧丙烷,继续搅拌混合20-30min,随后滴加缩水甘油醚及余量的环氧丙烷,边滴加边搅拌,添加完毕后继续搅拌反应2-3h,反应结束后体系冷却至室温后静置分层,除去未反应单体,得端羟基超支化聚醚多元醇备用;
(2)取余量的异佛尔酮二异氰酸酯,将其投入N,N-二甲基甲酰胺中,搅拌混合均匀后加入二月桂酸二丁基锡,搅拌混合均匀后体系油浴加热至35-40℃,保温反应2-3h,所得溶液备用;
(3)将十二烷基磺酸钠投入去离子水中配制成混合乳液,并将体系水浴加热至75-80℃,随后加入步骤(1)制得的端羟基超支化聚醚多元醇,与步骤(2)制备的物料混合均匀,体系加热至75-80℃,在氮气氛围下搅拌混合反应5-6h,反应结束后加入去离子水、十二烷基磺酸钠,超声乳化40-50min,即得所述的超支化聚醚乳液。
所述的一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂料的制备方法为:
(1)先将石油沥青基纳米碳球与超支化聚醚乳液混合,超声搅拌分散2-3h,制得复合乳液备用;
(2)将去离子水投入反应容器中,接着加入十二烷基硫酸钠、烷基酚聚氧乙烯醚、1/3重量份的过硫酸钾,搅拌使其完全溶解混合,随后加入1/3重量份的甲基丙烯酸三氟乙酯、1/3重量份的丙烯酸以及1/3重量份的甲基丙烯酸羟乙酯,搅拌混合均匀后体系升温至50-60℃,反应40-50min后依次加入余量的甲基丙烯酸三氟乙酯、丙烯酸、甲基丙烯酸羟乙酯、过硫酸钾,边加边搅拌,添加完毕后保温反应50-60min,反应结束后冷却至室温,过滤,得改性氟碳树脂乳液备用;
(3)将步骤(1)制备的物料与步骤(2)所得物料混合,搅拌均匀后加入其它剩余物料,球磨分散,至料浆粒度<50μm,最后用去离子水调节粘度,过滤后即得产品。
本发明制备了一种掺杂石油沥青基纳米碳球的水性氟碳树脂乳液,其中加入的石油沥青基纳米碳球经超支化聚醚乳液预分散后与氟碳树脂具有更好的浸润性,在乳液中达到均匀稳定的分散状态,这种纳米碳球具有优良的电化学防腐性能,可有效的延缓金属底盘的锈蚀,同时还能增强氟碳树脂的力学性能,增强膜层强度和韧性,膜层抗外界磨损能力更强,最终实现了环保和长效防锈的目标,较之传统的水性涂料具有突出的应用优势。
具体实施方式
一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂料,该涂料由以下重量份的原料制成:甲基丙烯酸三氟乙酯10、甲基丙烯酸羟乙酯8、丙烯酸3、石油沥青基纳米碳球2、十二烷基硫酸钠0.1、烷基酚聚氧乙烯醚0.4、过硫酸钾1、去离子水20、超支化聚醚乳液12、消泡剂0.4、防锈颜料3、十二碳醇酯1。
其中超支化聚醚乳液由以下重量份的原料制成:异佛尔酮二异氰酸酯8、二月桂酸二丁基锡0.1、N,N-二甲基甲酰胺12、环氧丙烷12、聚乙二醇单甲醚3、缩水甘油醚2、双金属氰化物催化剂0.8、去离子水40、十二烷基磺酸钠0.4,制备方法为:
(1)先取6重量份的异佛尔酮二异氰酸酯、双金属氰化物催化剂投入反应釜中,真空脱水处理后在氮气氛围下搅拌升温至132℃,随后滴加1/3重量份的环氧丙烷,继续搅拌混合20min,随后滴加缩水甘油醚及余量的环氧丙烷,边滴加边搅拌,添加完毕后继续搅拌反应2h,反应结束后体系冷却至室温后静置分层,除去未反应单体,得端羟基超支化聚醚多元醇备用;
(2)取余量的异佛尔酮二异氰酸酯,将其投入N,N-二甲基甲酰胺中,搅拌混合均匀后加入二月桂酸二丁基锡,搅拌混合均匀后体系油浴加热至35℃,保温反应2h,所得溶液备用;
(3)将十二烷基磺酸钠投入去离子水中配制成混合乳液,并将体系水浴加热至75℃,随后加入步骤(1)制得的端羟基超支化聚醚多元醇,与步骤(2)制备的物料混合均匀,体系加热至75℃,在氮气氛围下搅拌混合反应5h,反应结束后加入去离子水、十二烷基磺酸钠,超声乳化40min,即得所述的超支化聚醚乳液。
该实施例粉末涂料的制备方法为:
(1)先将石油沥青基纳米碳球与超支化聚醚乳液混合,超声搅拌分散2h,制得复合乳液备用;
(2)将去离子水投入反应容器中,接着加入十二烷基硫酸钠、烷基酚聚氧乙烯醚、1/3重量份的过硫酸钾,搅拌使其完全溶解混合,随后加入1/3重量份的甲基丙烯酸三氟乙酯、1/3重量份的丙烯酸以及1/3重量份的甲基丙烯酸羟乙酯,搅拌混合均匀后体系升温至50℃,反应40min后依次加入余量的甲基丙烯酸三氟乙酯、丙烯酸、甲基丙烯酸羟乙酯、过硫酸钾,边加边搅拌,添加完毕后保温反应50min,反应结束后冷却至室温,过滤,得改性氟碳树脂乳液备用;
(3)将步骤(1)制备的物料与步骤(2)所得物料混合,搅拌均匀后加入其它剩余物料,球磨分散,至料浆粒度<50μm,最后用去离子水调节粘度,过滤后即得产品。
制备的涂料遵照防锈漆标准进行性能测试,测试结果如下:
项目 性能指标
漆膜外观 正常
粘度(25℃/s) 32
表干时间(h) <1.3
实干时间(h) <32
耐冲击性/cm 40
漆膜附着力(级) 一级
耐盐水性 1228h无变化
耐盐雾性 1320h无异常
耐酸性 978h无变化
耐碱性 965h无变化
户外耐候性(24个月) 未发生明显变化

Claims (3)

1.一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂料,其特征在于,该涂料由以下重量份的原料制成:甲基丙烯酸三氟乙酯10-15、甲基丙烯酸羟乙酯8-12、丙烯酸3-5、石油沥青基纳米碳球2-3、十二烷基硫酸钠0.1-0.2、烷基酚聚氧乙烯醚0.4-0.5、过硫酸钾1-2、去离子水20-30、超支化聚醚乳液12-15、消泡剂0.4-0.5、防锈颜料3-5、十二碳醇酯1-2。
2.如权利要求1所述的一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂料,其特征在于,所述的超支化聚醚乳液由以下重量份的原料制成:异佛尔酮二异氰酸酯8-12、二月桂酸二丁基锡0.1-0.2、N,N-二甲基甲酰胺12-16、环氧丙烷12-15、聚乙二醇单甲醚3-5、缩水甘油醚2-5、双金属氰化物催化剂0.8-1.2、去离子水40-50、十二烷基磺酸钠0.4-0.5,制备方法为:
(1)先取6-8重量份的异佛尔酮二异氰酸酯、双金属氰化物催化剂投入反应釜中,真空脱水处理后在氮气氛围下搅拌升温至132-138℃,随后滴加1/3重量份的环氧丙烷,继续搅拌混合20-30min,随后滴加缩水甘油醚及余量的环氧丙烷,边滴加边搅拌,添加完毕后继续搅拌反应2-3h,反应结束后体系冷却至室温后静置分层,除去未反应单体,得端羟基超支化聚醚多元醇备用;
(2)取余量的异佛尔酮二异氰酸酯,将其投入N,N-二甲基甲酰胺中,搅拌混合均匀后加入二月桂酸二丁基锡,搅拌混合均匀后体系油浴加热至35-40℃,保温反应2-3h,所得溶液备用;
(3)将十二烷基磺酸钠投入去离子水中配制成混合乳液,并将体系水浴加热至75-80℃,随后加入步骤(1)制得的端羟基超支化聚醚多元醇,与步骤(2)制备的物料混合均匀,体系加热至75-80℃,在氮气氛围下搅拌混合反应5-6h,反应结束后加入去离子水、十二烷基磺酸钠,超声乳化40-50min,即得所述的超支化聚醚乳液。
3.如权利要求1所述的一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂料的制备方法,其特征在于,所述的制备方法为:
(1)先将石油沥青基纳米碳球与超支化聚醚乳液混合,超声搅拌分散2-3h,制得复合乳液备用;
(2)将去离子水投入反应容器中,接着加入十二烷基硫酸钠、烷基酚聚氧乙烯醚、1/3重量份的过硫酸钾,搅拌使其完全溶解混合,随后加入1/3重量份的甲基丙烯酸三氟乙酯、1/3重量份的丙烯酸以及1/3重量份的甲基丙烯酸羟乙酯,搅拌混合均匀后体系升温至50-60℃,反应40-50min后依次加入余量的甲基丙烯酸三氟乙酯、丙烯酸、甲基丙烯酸羟乙酯、过硫酸钾,边加边搅拌,添加完毕后保温反应50-60min,反应结束后冷却至室温,过滤,得改性氟碳树脂乳液备用;
(3)将步骤(1)制备的物料与步骤(2)所得物料混合,搅拌均匀后加入其它剩余物料,球磨分散,至料浆粒度<50μm,最后用去离子水调节粘度,过滤后即得产品。
CN201610905313.0A 2016-10-17 2016-10-17 一种汽车底盘用石油沥青基纳米碳球增强的改性水基氟碳涂料及其制备方法 Withdrawn CN106519870A (zh)

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