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CN107312423A - 一种抗裂聚氨酯水性涂料 - Google Patents

一种抗裂聚氨酯水性涂料 Download PDF

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CN107312423A
CN107312423A CN201710493385.3A CN201710493385A CN107312423A CN 107312423 A CN107312423 A CN 107312423A CN 201710493385 A CN201710493385 A CN 201710493385A CN 107312423 A CN107312423 A CN 107312423A
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孙巨福
戴宇钧
祝盆鑫
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Tianchang Julong Car and Ship Coating Co Ltd
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Abstract

本发明公开了一种抗裂聚氨酯水性涂料，其原料按重量份包括：改性聚氨酯乳液80‑100份，滑石粉6‑8份，玻璃纤维1‑3份，钛白粉3‑5份，丙二醇丁醚2‑4份，木质素磺酸钠1‑2份，十二烷基苯磺酸钠1‑2份，乳化硅油0.1‑0.2份，聚氧乙烯聚氧丙烯季戊四醇醚0.1‑0.3份，甘油0.4‑0.6份，润湿剂wet2650.1‑0.2份，聚乙烯吡咯烷酮0.2‑0.3份，聚丙烯酰胺0.1‑0.2份，流平剂0.1‑0.3份，γ‑(甲基丙烯酰氧)丙基三甲氧基硅烷0.8‑1份，水15‑20份。本发明具有良好的韧性、抗裂性的同时，具有良好的抗冲击性、粘结性和耐腐蚀性。

Description

一种抗裂聚氨酯水性涂料
技术领域
本发明涉及涂料技术领域，尤其涉及一种抗裂聚氨酯水性涂料。
背景技术
涂料分为水性涂料和油性涂料，水性涂料由于具有环保、对人体伤害小等优点而被广泛应用。目前为增加水性涂料的抗冲击性，常通过添加填料来增加其抗冲击性，但是填料在涂料中不易分散，往往会降低涂料的柔韧性和抗裂性能。
发明内容
基于背景技术存在的技术问题，本发明提出了一种抗裂聚氨酯水性涂料，本发明具有良好的韧性、抗裂性的同时，具有良好的抗冲击性、粘结性和耐腐蚀性。
本发明提出的一种抗裂聚氨酯水性涂料，其原料按重量份包括：改性聚氨酯乳液80-100份，滑石粉6-8份，玻璃纤维1-3份，钛白粉3-5份，丙二醇丁醚2-4份，木质素磺酸钠1-2份，十二烷基苯磺酸钠1-2份，乳化硅油0.1-0.2份，聚氧乙烯聚氧丙烯季戊四醇醚0.1-0.3份，甘油0.4-0.6份，润湿剂wet265 0.1-0.2份，聚乙烯吡咯烷酮0.2-0.3份，聚丙烯酰胺0.1-0.2份，流平剂0.1-0.3份，γ-(甲基丙烯酰氧)丙基三甲氧基硅烷1-2份，水15-20份。
优选地，在改性聚氨酯乳液的制备过程中，在氮气氛围中，将异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、丁酮、二月桂酸二丁基锡、二羟基甲基混匀，升温，保温搅拌，加入环氧树脂，继续保温搅拌，再加入丙烯酸羟乙酯，继续保温搅拌得到聚氨酯预聚体溶液；将甲基丙烯酸甲酯、水、丁酮混匀，加入有机化蒙脱土，超声并搅拌，然后继续超声得到溶液A；取聚氨酯预聚体溶液，冷却至室温，加入溶液A混匀，用三乙胺中和，加水剪切乳化，升温，滴加偶氮二异丁腈，保温搅拌，减压蒸发除去丁酮得到改性聚氨酯乳液。
优选地，在改性聚氨酯乳液的制备过程中，在氮气氛围中，将异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、丁酮、二月桂酸二丁基锡、二羟基甲基混匀，升温至70-80℃，保温搅拌2-3h，加入环氧树脂，继续保温搅拌1-2h，再加入丙烯酸羟乙酯，继续保温搅拌60-80min得到聚氨酯预聚体溶液；将甲基丙烯酸甲酯、水、丁酮混匀，加入有机化蒙脱土，超声并搅拌40-50min，然后继续超声80-100min得到溶液A；取聚氨酯预聚体溶液，冷却至室温，加入溶液A混匀，用三乙胺中和，加水剪切乳化，升温至70-80℃，滴加偶氮二异丁腈，保温搅拌3-4h，减压蒸发除去丁酮得到改性聚氨酯乳液。
优选地，在改性聚氨酯乳液的制备过程中，异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、二月桂酸二丁基锡、二羟基甲基、环氧树脂、丙烯酸羟乙酯的重量比为23-27：17-20：0.1-0.15：2.5-2.9：3.2-4：2-2.5。
优选地，在改性聚氨酯乳液的溶液A制备过程中，甲基丙烯酸甲酯、水、丁酮、有机化蒙脱土的重量比为7-8：8-12：4-6：0.8-1.2。
优选地，在改性聚氨酯乳液的制备过程中，异佛尔酮二异氰酸酯、甲基丙烯酸甲酯、偶氮二异丁腈的重量比为23-27：10-12：0.11-0.13。
优选地，改性聚氨酯乳液的固含量为30-40wt％。
优选地，滑石粉为600-800目，钛白粉为1000-2000目。
优选地，其原料按重量份包括：改性聚氨酯乳液85-95份，滑石粉6.5-7.5份，玻璃纤维1.5-2.5份，钛白粉3.5-4.5份，丙二醇丁醚2.5-3.5份，木质素磺酸钠1.2-1.8份，十二烷基苯磺酸钠1.3-1.7份，乳化硅油0.12-0.18份，聚氧乙烯聚氧丙烯季戊四醇醚0.15-0.25份，甘油0.45-0.55份，润湿剂wet265 0.12-0.18份，聚乙烯吡咯烷酮0.23-0.27份，聚丙烯酰胺0.13-0.17份，流平剂0.15-0.25份，γ-(甲基丙烯酰氧)丙基三甲氧基硅烷1.2-1.8份，水16-18份。
上述水均为去离子水。
上述改性聚氨酯乳液的制备过程中，不规定丁酮的用量，根据具体操作确定其用量。
按本领域常用技术手段制备抗裂聚氨酯水性涂料。
本发明选用异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、二羟基甲基、环氧树脂和丙烯酸羟乙酯反应，制备得到不饱和双键封端并接枝有环氧树脂的聚氨酯预聚体，环氧树脂具有良好的柔韧性、耐腐蚀性、粘结性，与聚氨酯相互配合可以增加聚氨酯的柔韧性、抗裂性、粘结性和耐腐蚀性；有机化蒙脱土具有层状结构与甲基丙烯酸甲酯混匀经搅拌超声处理，甲基丙烯酸甲酯插层并剥离蒙脱土片层，使蒙脱土片层与甲基丙烯酸甲酯均匀分散，然后与不饱和双键封端的聚氨酯预聚体均匀分散并发生缩合，形成交联互穿的复杂网络，且蒙脱土片层均匀穿插在网络中，聚氨酯、环氧树脂、甲基丙烯酸甲酯、蒙脱土片层相互配合，从而大大增加本发明的抗冲击性、韧性、抗裂性、粘结性和耐腐蚀性；滑石粉、玻璃纤维、钛白粉相互配合，进一步增加本发明的抗冲击性能；丙二醇丁醚可以增加本发明的成膜性；木质素磺酸钠、十二烷基苯磺酸钠、甘油、润湿剂wet265、γ-(甲基丙烯酰氧)丙基三甲氧基硅烷相互配合，促进各物质均匀分散；乳化硅油、聚氧乙烯聚氧丙烯季戊四醇醚、聚乙烯吡咯烷酮、聚丙烯酰胺、流平剂相互配合，增加本发明的流变性、稳定性；γ-(甲基丙烯酰氧)丙基三甲氧基硅烷和改性聚氨酯乳液相互配合，可以进一步增加本发明和被涂物的粘结性；上述各物质相互配合使得本发明具有良好的韧性、抗裂性的同时，具有良好的抗冲击性、粘结性和耐腐蚀性。
具体实施方式
下面，通过具体实施例对本发明的技术方案进行详细说明。
实施例1
一种抗裂聚氨酯水性涂料，其原料按重量份包括：改性聚氨酯乳液90份，滑石粉7份，玻璃纤维2份，钛白粉4份，丙二醇丁醚3份，木质素磺酸钠1.5份，十二烷基苯磺酸钠1.5份，乳化硅油0.15份，聚氧乙烯聚氧丙烯季戊四醇醚0.2份，甘油0.5份，润湿剂wet265 0.15份，聚乙烯吡咯烷酮0.25份，聚丙烯酰胺0.15份，流平剂0.2份，γ-(甲基丙烯酰氧)丙基三甲氧基硅烷1.5份，水17份。
实施例2
一种抗裂聚氨酯水性涂料，其原料按重量份包括：固含量为30wt％改性聚氨酯乳液100份，600目滑石粉8份，玻璃纤维1份，2000目钛白粉3份，丙二醇丁醚4份，木质素磺酸钠1份，十二烷基苯磺酸钠2份，乳化硅油0.1份，聚氧乙烯聚氧丙烯季戊四醇醚0.3份，甘油0.4份，润湿剂wet265 0.2份，聚乙烯吡咯烷酮0.2份，聚丙烯酰胺0.2份，流平剂0.1份，γ-(甲基丙烯酰氧)丙基三甲氧基硅烷2份，水15份；
其中，在改性聚氨酯乳液的制备过程中，在氮气氛围中，将异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、丁酮、二月桂酸二丁基锡、二羟基甲基混匀，升温至80℃，保温搅拌2h，加入环氧树脂，继续保温搅拌2h，再加入丙烯酸羟乙酯，继续保温搅拌60min得到聚氨酯预聚体溶液，其中，异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、二月桂酸二丁基锡、二羟基甲基、环氧树脂、丙烯酸羟乙酯的重量比为27：17：0.15：2.5：4：2；将甲基丙烯酸甲酯、水、丁酮混匀，加入有机化蒙脱土，超声并搅拌50min，然后继续超声80min得到溶液A，其中，甲基丙烯酸甲酯、水、丁酮、有机化蒙脱土的重量比为8：8：6：0.8；取聚氨酯预聚体溶液，冷却至室温，加入溶液A混匀，用三乙胺中和，加水剪切乳化，升温至80℃，滴加偶氮二异丁腈，保温搅拌3h，减压蒸发除去丁酮得到改性聚氨酯乳液，其中，异佛尔酮二异氰酸酯、甲基丙烯酸甲酯、偶氮二异丁腈的重量比为27：10：0.13。
实施例3
一种抗裂聚氨酯水性涂料，其原料按重量份包括：固含量为40wt％改性聚氨酯乳液80份，800目滑石粉6份，玻璃纤维3份，1000目钛白粉5份，丙二醇丁醚2份，木质素磺酸钠2份，十二烷基苯磺酸钠1份，乳化硅油0.2份，聚氧乙烯聚氧丙烯季戊四醇醚0.1份，甘油0.6份，润湿剂wet265 0.1份，聚乙烯吡咯烷酮0.3份，聚丙烯酰胺0.1份，流平剂0.3份，γ-(甲基丙烯酰氧)丙基三甲氧基硅烷1份，水20份；
其中，在改性聚氨酯乳液的制备过程中，在氮气氛围中，将异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、丁酮、二月桂酸二丁基锡、二羟基甲基混匀，升温至70℃，保温搅拌3h，加入环氧树脂，继续保温搅拌1h，再加入丙烯酸羟乙酯，继续保温搅拌80min得到聚氨酯预聚体溶液，其中，异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、二月桂酸二丁基锡、二羟基甲基、环氧树脂、丙烯酸羟乙酯的重量比为23：20：0.1：2.9：3.2：2.5；将甲基丙烯酸甲酯、水、丁酮混匀，加入有机化蒙脱土，超声并搅拌40min，然后继续超声100min得到溶液A，其中，甲基丙烯酸甲酯、水、丁酮、有机化蒙脱土的重量比为7：12：4：1.2；取聚氨酯预聚体溶液，冷却至室温，加入溶液A混匀，用三乙胺中和，加水剪切乳化，升温至70℃，滴加偶氮二异丁腈，保温搅拌4h，减压蒸发除去丁酮得到改性聚氨酯乳液，其中，异佛尔酮二异氰酸酯、甲基丙烯酸甲酯、偶氮二异丁腈的重量比为23：12：0.11。
实施例4
一种抗裂聚氨酯水性涂料，其原料按重量份包括：固含量为32wt％改性聚氨酯乳液95份，600目滑石粉7.5份，玻璃纤维1.5份，2000目钛白粉3.5份，丙二醇丁醚3.5份，木质素磺酸钠1.2份，十二烷基苯磺酸钠1.7份，乳化硅油0.12份，聚氧乙烯聚氧丙烯季戊四醇醚0.25份，甘油0.45份，润湿剂wet265 0.18份，聚乙烯吡咯烷酮0.23份，聚丙烯酰胺0.17份，流平剂0.15份，γ-(甲基丙烯酰氧)丙基三甲氧基硅烷1.8份，水16份；
其中，在改性聚氨酯乳液的制备过程中，在氮气氛围中，将异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、丁酮、二月桂酸二丁基锡、二羟基甲基混匀，升温至78℃，保温搅拌2.2h，加入环氧树脂，继续保温搅拌1.7h，再加入丙烯酸羟乙酯，继续保温搅拌65min得到聚氨酯预聚体溶液，其中，异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、二月桂酸二丁基锡、二羟基甲基、环氧树脂、丙烯酸羟乙酯的重量比为26：18：0.14：2.6：3.8：2.1；将甲基丙烯酸甲酯、水、丁酮混匀，加入有机化蒙脱土，超声并搅拌48min，然后继续超声85min得到溶液A，其中，甲基丙烯酸甲酯、水、丁酮、有机化蒙脱土的重量比为7.7：9：5.5：0.9；取聚氨酯预聚体溶液，冷却至室温，加入溶液A混匀，用三乙胺中和，加水剪切乳化，升温至78℃，滴加偶氮二异丁腈，保温搅拌3.3h，减压蒸发除去丁酮得到改性聚氨酯乳液，其中，异佛尔酮二异氰酸酯、甲基丙烯酸甲酯、偶氮二异丁腈的重量比为26：10.5：0.125。
实施例5
一种抗裂聚氨酯水性涂料，其原料按重量份包括：固含量为38wt％改性聚氨酯乳液85份，800目滑石粉6.5份，玻璃纤维2.5份，1000目钛白粉4.5份，丙二醇丁醚2.5份，木质素磺酸钠1.8份，十二烷基苯磺酸钠1.3份，乳化硅油0.18份，聚氧乙烯聚氧丙烯季戊四醇醚0.15份，甘油0.55份，润湿剂wet265 0.12份，聚乙烯吡咯烷酮0.27份，聚丙烯酰胺0.13份，流平剂0.25份，γ-(甲基丙烯酰氧)丙基三甲氧基硅烷1.2份，水18份；
其中，在改性聚氨酯乳液的制备过程中，在氮气氛围中，将异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、丁酮、二月桂酸二丁基锡、二羟基甲基混匀，升温至72℃，保温搅拌2.8h，加入环氧树脂，继续保温搅拌1.3h，再加入丙烯酸羟乙酯，继续保温搅拌75min得到聚氨酯预聚体溶液，其中，异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、二月桂酸二丁基锡、二羟基甲基、环氧树脂、丙烯酸羟乙酯的重量比为24：19：0.12：2.8：3.4：2.3；将甲基丙烯酸甲酯、水、丁酮混匀，加入有机化蒙脱土，超声并搅拌42min，然后继续超声95min得到溶液A，其中，甲基丙烯酸甲酯、水、丁酮、有机化蒙脱土的重量比为7.3：11：4.5：1.1；取聚氨酯预聚体溶液，冷却至室温，加入溶液A混匀，用三乙胺中和，加水剪切乳化，升温至72℃，滴加偶氮二异丁腈，保温搅拌3.7h，减压蒸发除去丁酮得到改性聚氨酯乳液，其中，异佛尔酮二异氰酸酯、甲基丙烯酸甲酯、偶氮二异丁腈的重量比为24：11.5：0.115。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。

Claims (9)

1.一种抗裂聚氨酯水性涂料，其特征在于，其原料按重量份包括：改性聚氨酯乳液80-100份，滑石粉6-8份，玻璃纤维1-3份，钛白粉3-5份，丙二醇丁醚2-4份，木质素磺酸钠1-2份，十二烷基苯磺酸钠1-2份，乳化硅油0.1-0.2份，聚氧乙烯聚氧丙烯季戊四醇醚0.1-0.3份，甘油0.4-0.6份，润湿剂wet2650.1-0.2份，聚乙烯吡咯烷酮0.2-0.3份，聚丙烯酰胺0.1-0.2份，流平剂0.1-0.3份，γ-(甲基丙烯酰氧)丙基三甲氧基硅烷1-2份，水15-20份。
2.根据权利要求1所述抗裂聚氨酯水性涂料，其特征在于，在改性聚氨酯乳液的制备过程中，在氮气氛围中，将异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、丁酮、二月桂酸二丁基锡、二羟基甲基混匀，升温，保温搅拌，加入环氧树脂，继续保温搅拌，再加入丙烯酸羟乙酯，继续保温搅拌得到聚氨酯预聚体溶液；将甲基丙烯酸甲酯、水、丁酮混匀，加入有机化蒙脱土，超声并搅拌，然后继续超声得到溶液A；取聚氨酯预聚体溶液，冷却至室温，加入溶液A混匀，用三乙胺中和，加水剪切乳化，升温，滴加偶氮二异丁腈，保温搅拌，减压蒸发除去丁酮得到改性聚氨酯乳液。
3.根据权利要求1或2所述抗裂聚氨酯水性涂料，其特征在于，在改性聚氨酯乳液的制备过程中，在氮气氛围中，将异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、丁酮、二月桂酸二丁基锡、二羟基甲基混匀，升温至70-80℃，保温搅拌2-3h，加入环氧树脂，继续保温搅拌1-2h，再加入丙烯酸羟乙酯，继续保温搅拌60-80min得到聚氨酯预聚体溶液；将甲基丙烯酸甲酯、水、丁酮混匀，加入有机化蒙脱土，超声并搅拌40-50min，然后继续超声80-100min得到溶液A；取聚氨酯预聚体溶液，冷却至室温，加入溶液A混匀，用三乙胺中和，加水剪切乳化，升温至70-80℃，滴加偶氮二异丁腈，保温搅拌3-4h，减压蒸发除去丁酮得到改性聚氨酯乳液。
4.根据权利要求2或3所述抗裂聚氨酯水性涂料，其特征在于，在改性聚氨酯乳液的制备过程中，异佛尔酮二异氰酸酯、聚氧化乙烯二醇1000、二月桂酸二丁基锡、二羟基甲基、环氧树脂、丙烯酸羟乙酯的重量比为23-27：17-20：0.1-0.15：2.5-2.9：3.2-4：2-2.5。
5.根据权利要求2-4任一项所述抗裂聚氨酯水性涂料，其特征在于，在改性聚氨酯乳液的溶液A制备过程中，甲基丙烯酸甲酯、水、丁酮、有机化蒙脱土的重量比为7-8：8-12：4-6：0.8-1.2。
6.根据权利要求2-5任一项所述抗裂聚氨酯水性涂料，其特征在于，在改性聚氨酯乳液的制备过程中，异佛尔酮二异氰酸酯、甲基丙烯酸甲酯、偶氮二异丁腈的重量比为23-27：10-12：0.11-0.13。
7.根据权利要求1-6任一项所述抗裂聚氨酯水性涂料，其特征在于，改性聚氨酯乳液的固含量为30-40wt％。
8.根据权利要求1-7任一项所述抗裂聚氨酯水性涂料，其特征在于，滑石粉为600-800目，钛白粉为1000-2000目。
9.根据权利要求1-8任一项所述抗裂聚氨酯水性涂料，其特征在于，其原料按重量份包括：改性聚氨酯乳液85-95份，滑石粉6.5-7.5份，玻璃纤维1.5-2.5份，钛白粉3.5-4.5份，丙二醇丁醚2.5-3.5份，木质素磺酸钠1.2-1.8份，十二烷基苯磺酸钠1.3-1.7份，乳化硅油0.12-0.18份，聚氧乙烯聚氧丙烯季戊四醇醚0.15-0.25份，甘油0.45-0.55份，润湿剂wet265 0.12-0.18份，聚乙烯吡咯烷酮0.23-0.27份，聚丙烯酰胺0.13-0.17份，流平剂0.15-0.25份，γ-(甲基丙烯酰氧)丙基三甲氧基硅烷1.2-1.8份，水16-18份。
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Application publication date: 20171103