CN104559730B - 一种有机硅改性聚氨酯树脂涂料的制备方法 - Google Patents

一种有机硅改性聚氨酯树脂涂料的制备方法 Download PDF

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CN104559730B
CN104559730B CN201510004653.1A CN201510004653A CN104559730B CN 104559730 B CN104559730 B CN 104559730B CN 201510004653 A CN201510004653 A CN 201510004653A CN 104559730 B CN104559730 B CN 104559730B
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麦长权
麦朝忠
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Chengdu BOGAO synthetic material Co., Ltd.
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Abstract

本发明公开了一种有机硅改性聚氨酯树脂涂料的制备方法,包括以下步骤:按重量份计,将聚酯多元醇,异佛尔二异氰酸酯,催化剂和羟基硅油置于反应釜中加热条件下反应完全后冷却至室温;加入N‑甲基二乙醇胺,在加热条件下反应后,降温,加入冰醋酸中和,再加入丙酮稀释,真空抽除丙酮溶剂后即得有机硅改性聚氨酯树脂;将有机硅改性聚氨酯树脂,丙烯酸树脂加入季戊四醇中升温,分散均匀;加入磷苯二甲酸二丁脂,二氧化硅,三氯化铁,二苯甲酮,硼酸锌,异噻唑啉酮,降温后分散均匀,冷却,研磨后即得。本发明制得的涂料具有热稳定性强,耐老化性能好,遇潮不易起泡的优点。

Description

一种有机硅改性聚氨酯树脂涂料的制备方法
技术领域
本发明涉及涂料技术领域,特别涉及一种有机硅改性聚氨酯树脂涂料的制备方法。
背景技术
聚氨酯是由硬段和软段交替组成,通过控制两者的比例,可以获得不同的力学性能,具有良好的物理和机械性能,其具有耐磨、耐油、耐撕裂、耐化学腐蚀、耐射线辐射、黏合性好、吸振能力强等优良性能,在许多工业领域得到广泛应用,是一类用途广泛的工程材料。
然而聚氨酯的热稳定性较差,耐老化性能不好,遇潮易起泡,限制了它的进一步应用,需要对其改性以完善其存在的缺陷。
发明内容
为了克服上述缺陷,本发明解决的技术问题是,提供一种有机硅改性聚氨酯树脂涂料的制备方法,制得的涂料具有本发明制得的涂料具有热稳定性强,耐老化性能好,遇潮不易起泡的优点。
为了解决上述技术问题,本发明采用的技术方案是:
一种有机硅改性聚氨酯树脂涂料的制备方法,包括以下步骤:
(一)有机硅改性聚氨酯树脂的制备:
(11)按重量份计,将聚酯多元醇36-48份,异佛尔二异氰酸酯25-32份,催化剂3-8份和羟基硅油12-23份置于反应釜中加热条件下反应2-3小时,反应完全后冷却至室温,得到预聚材料;
(12)将步骤(11)所得预聚材料和N-甲基二乙醇胺5-9份,在加热条件下反应2-4小时,降温,加入冰醋酸中和至PH为5-7,再加入丙酮42-54份稀释,真空抽除丙酮溶剂后即得有机硅改性聚氨酯树脂。
(二)有机硅改性聚氨酯树脂涂料的制备:
(21)将有机硅改性聚氨酯树脂35-52份,丙烯酸树脂14-26份加入季戊四醇6-18份中温度升高至80-90℃,分散均匀,制成分散液备用;
(22)向分散液中加入磷苯二甲酸二丁脂11-23份,二氧化硅2-10份,三氯化铁5-15份,二苯甲酮2-9份,硼酸锌2-7份,异噻唑啉酮7-14份,以每5分钟降温5℃的速度降温至40-45℃,继续分散30-40分钟,分散均匀后冷却至室温,研磨后即得所述有机硅改性聚氨酯树脂涂料。
上述步骤(11)中催化剂为三亚乙基二胺和/或二甲基环己胺中的一种或其组合。
上述步骤(11)中加热温度为90-110℃。
上述步骤(12)中加热温度为65-80℃。
上述步骤(12)中降温至30-40℃。
上述步骤(22)中研磨细度在10微米以下。
有益效果
本发明制得的涂料热稳定性、耐老化性能有了明显提高,水煮100h未发生变化,在90℃温度条件下氙弧灯人工老化900小时未发生变化,同时遇潮不易起泡,经蒸馏水室温浸泡40天不出现起泡和脱落的现象。
具体实施方式
实施例1
有机硅改性聚氨酯树脂涂料的制备方法,包括以下步骤:
(一)有机硅改性聚氨酯树脂的制备:
(11)按重量份计,将聚酯多元醇36份,异佛尔二异氰酸酯25份,三亚乙基二胺3份和羟基硅油12份置于反应釜中加热至90℃,反应2小时,反应完全后冷却至室温,得到预聚材料;
(12)将步骤(11)所得预聚材料和N-甲基二乙醇胺5份,在加热至65℃,反应2小时,降温至30℃,加入冰醋酸中和至PH为5,再加入丙酮42份稀释,真空抽除丙酮溶剂后即得有机硅改性聚氨酯树脂。
(二)有机硅改性聚氨酯树脂涂料的制备:
(21)将有机硅改性聚氨酯树脂35份,丙烯酸树脂14份加入季戊四醇6份中温度升高至80℃,分散均匀,制成分散液备用;
(22)向分散液中加入磷苯二甲酸二丁脂11份,二氧化硅2份,三氯化铁5份,二苯甲酮2份,硼酸锌2份,异噻唑啉酮7份,以每5分钟降温5℃的速度降温至40℃,继续分散30分钟,分散均匀后冷却至室温,研磨至10微米以下,即得所述有机硅改性聚氨酯树脂涂料。
实施例2
有机硅改性聚氨酯树脂涂料的制备方法,包括以下步骤:
(一)有机硅改性聚氨酯树脂的制备:
(11)按重量份计,将聚酯多元醇48份,异佛尔二异氰酸酯32份,三亚乙基二胺8份和羟基硅油23份置于反应釜中加热至110℃,反应3小时,反应完全后冷却至室温,得到预聚材料;
(12)将步骤(11)所得预聚材料和N-甲基二乙醇胺9份,在加热至80℃,反应4小时,降温至40℃,加入冰醋酸中和至PH为7,再加入丙酮54份稀释,真空抽除丙酮溶剂后即得有机硅改性聚氨酯树脂。
(二)有机硅改性聚氨酯树脂涂料的制备:
(21)将有机硅改性聚氨酯树脂52份,丙烯酸树脂26份加入季戊四醇18份中温度升高至90℃,分散均匀,制成分散液备用;
(22)向分散液中加入磷苯二甲酸二丁脂23份,二氧化硅10份,三氯化铁15份,二苯甲酮9份,硼酸锌7份,异噻唑啉酮14份,以每5分钟降温5℃的速度降温至45℃,继续分散40分钟,分散均匀后冷却至室温,研磨至10微米以下,即得所述有机硅改性聚氨酯树脂涂料。
实施例3
有机硅改性聚氨酯树脂涂料的制备方法,包括以下步骤:
(一)有机硅改性聚氨酯树脂的制备:
(11)按重量份计,将聚酯多元醇38份,异佛尔二异氰酸酯27份,三亚乙基二胺4份和羟基硅油15份置于反应釜中加热至95℃,反应2.5小时,反应完全后冷却至室温,得到预聚材料;
(12)将步骤(11)所得预聚材料和N-甲基二乙醇胺6份,在加热至68℃,反应2.5小时,降温至35℃,加入冰醋酸中和至PH为6,再加入丙酮47份稀释,真空抽除丙酮溶剂后即得有机硅改性聚氨酯树脂。
(二)有机硅改性聚氨酯树脂涂料的制备:
(21)将有机硅改性聚氨酯树脂37份,丙烯酸树脂16份加入季戊四醇8份中温度升高至82℃,分散均匀,制成分散液备用;
(22)向分散液中加入磷苯二甲酸二丁脂14份,二氧化硅3份,三氯化铁7份,二苯甲酮3份,硼酸锌3份,异噻唑啉酮8份,以每5分钟降温5℃的速度降温至42℃,继续分散33分钟,分散均匀后冷却至室温,研磨至10微米以下,即得所述有机硅改性聚氨酯树脂涂料。
实施例4
有机硅改性聚氨酯树脂涂料的制备方法,包括以下步骤:
(一)有机硅改性聚氨酯树脂的制备:
(11)按重量份计,将聚酯多元醇44份,异佛尔二异氰酸酯29份,三亚乙基二胺7份和羟基硅油21份置于反应釜中加热至105℃,反应3小时,反应完全后冷却至室温,得到预聚材料;
(12)将步骤(11)所得预聚材料和N-甲基二乙醇胺8份,在加热至75℃,反应3.5小时,降温至35℃,加入冰醋酸中和至PH为7,再加入丙酮50份稀释,真空抽除丙酮溶剂后即得有机硅改性聚氨酯树脂。
(二)有机硅改性聚氨酯树脂涂料的制备:
(21)将有机硅改性聚氨酯树脂50份,丙烯酸树脂23份加入季戊四醇16份中温度升高至88℃,分散均匀,制成分散液备用;
(22)向分散液中加入磷苯二甲酸二丁脂21份,二氧化硅9份,三氯化铁13份,二苯甲酮8份,硼酸锌6份,异噻唑啉酮12份,以每5分钟降温5℃的速度降温至44℃,继续分散38分钟,分散均匀后冷却至室温,研磨至10微米以下,即得所述有机硅改性聚氨酯树脂涂料。
实施例5
有机硅改性聚氨酯树脂涂料的制备方法,包括以下步骤:
(一)有机硅改性聚氨酯树脂的制备:
(11)按重量份计,将聚酯多元醇42份,异佛尔二异氰酸酯28份,三亚乙基二胺6份和羟基硅油18份置于反应釜中加热至100℃,反应2.5小时,反应完全后冷却至室温,得到预聚材料;
(12)将步骤(11)所得预聚材料和N-甲基二乙醇胺7份,在加热至75℃,反应3小时,降温至35℃,加入冰醋酸中和至PH为6,再加入丙酮48份稀释,真空抽除丙酮溶剂后即得有机硅改性聚氨酯树脂。
(二)有机硅改性聚氨酯树脂涂料的制备:
(21)将有机硅改性聚氨酯树脂48份,丙烯酸树脂21份加入季戊四醇12份中温度升高至85℃,分散均匀,制成分散液备用;
(22)向分散液中加入磷苯二甲酸二丁脂16份,二氧化硅6份,三氯化铁11份,二苯甲酮7份,硼酸锌5份,异噻唑啉酮11份,以每5分钟降温5℃的速度降温至43℃,继续分散36分钟,分散均匀后冷却至室温,研磨至10微米以下,即得所述有机硅改性聚氨酯树脂涂料。
对比例1
与实施例5的区别是聚氨酯树脂未改性。
聚氨酯树脂涂料的制备方法,包括以下步骤:
(1)按重量份计,将聚氨酯树脂48份,丙烯酸树脂21份加入季戊四醇12份中温度升高至85℃,分散均匀,制成分散液备用;
(2)向步骤(1)所得分散液中加入磷苯二甲酸二丁脂16份,二氧化硅6份,三氯化铁11份,二苯甲酮7份,硼酸锌5份,异噻唑啉酮11份,以每5分钟降温5℃的速度降温至43℃,继续分散36分钟,分散均匀后冷却至室温,研磨至10微米以下,即得所述聚氨酯树脂涂料。
对比例2
与实施例5的区别是步骤(22)中未加入异噻唑啉酮。
有机硅改性聚氨酯树脂涂料的制备方法,包括以下步骤:
(一)有机硅改性聚氨酯树脂的制备:
(11)按重量份计,将聚酯多元醇42份,异佛尔二异氰酸酯28份,三亚乙基二胺6份和羟基硅油18份置于反应釜中加热至100℃,反应2.5小时,反应完全后冷却至室温,得到预聚材料;
(12)将步骤(11)所得预聚材料和N-甲基二乙醇胺7份,在加热至75℃,反应3小时,降温至35℃,加入冰醋酸中和至PH为6,再加入丙酮48份稀释,真空抽除丙酮溶剂后即得有机硅改性聚氨酯树脂。
(二)有机硅改性聚氨酯树脂涂料的制备:
(21)将有机硅改性聚氨酯树脂48份,丙烯酸树脂21份加入季戊四醇12份中温度升高至85℃,分散均匀,制成分散液备用;
(22)向分散液中加入磷苯二甲酸二丁脂16份,二氧化硅6份,三氯化铁11份,二苯甲酮7份,硼酸锌5份,以每5分钟降温5℃的速度降温至43℃,继续分散36分钟,分散均匀后冷却至室温,研磨至10微米以下,即得所述有机硅改性聚氨酯树脂涂料。
性能测试:
将实施例1-5和对比例1所得的涂料对其性能检测结果如下表:
从上表中可以看出:由于对聚氨酯树脂进行改性使得实施例1-5制得的涂料热稳定性、耐老化性能有了明显提高,水煮100h未发生变化,在90℃温度条件下氙弧灯人工老化900小时未发生变化,经蒸馏水室温浸泡40天不出现起泡和脱落的现象,相对于对比例1性能有了明显改善;实施例与对比例2 可以看出加入异噻唑啉酮,可以防止老化过程中出现粉化的现象。

Claims (1)

1.一种有机硅改性聚氨酯树脂涂料的制备方法,其特征在于,包括以下步骤:
(一)有机硅改性聚氨酯树脂的制备:
(11)按重量份计,将聚酯多元醇42份,异佛尔二异氰酸酯28份,三亚乙基二胺6份和羟基硅油18份置于反应釜中加热至100℃,反应2.5小时,反应完全后冷却至室温,得到预聚材料;
(12)将步骤(11)所得预聚材料和N-甲基二乙醇胺7份,在加热至75℃,反应3小时,降温至35℃,加入冰醋酸中和至pH为6,再加入丙酮48份稀释,真空抽除丙酮溶剂后即得有机硅改性聚氨酯树脂;
(二)有机硅改性聚氨酯树脂涂料的制备:
(21)将有机硅改性聚氨酯树脂48份,丙烯酸树脂21份加入季戊四醇12份中温度升高至85℃,分散均匀,制成分散液备用;
(22)向分散液中加入磷苯二甲酸二丁酯16份,二氧化硅6份,三氯化铁11份,二苯甲酮7份,硼酸锌5份,异噻唑啉酮11份,以每5分钟降温5℃的速度降温至43℃,继续分散36分钟,分散均匀后冷却至室温,研磨至10微米以下,即得所述有机硅改性聚氨酯树脂涂料。
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