CN106833306A - 一种防绿化pe漆及其生产方法 - Google Patents
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Abstract
本发明涉及涂料领域,提供了一种防绿化PE底漆及其制备方法,本发明提供的PE防绿化底漆,包括如下重量份数的组分:树脂70份、苯乙烯3份、防绿改性剂0.5份、分散剂0.4份、防沉剂1份、滑石粉20份、硬脂酸锌5份、消泡剂0.3份、流平剂0.3份。与现有技术相比,本发明提供的PE底漆,具有很好涂膜效果和极好的防绿化性能,可以广泛应用于家具涂装。
Description
技术领域
本发明涉及涂料领域,特别是涉及一种防绿化的PE底漆。
背景技术
不饱和聚酯固化反应为自由基共聚反应,在固化反应过程中,需要加入引发剂(白水)和促进剂(蓝水),通过氧化还原反应,促进剂中的钴盐使引发剂分解产生高活性的游离自由基,自由基攻击聚酯分子链中的不饱和双键和交联单体苯乙烯,使之活化,从而发生交联反应,使聚酯形成三维网状结构的优异漆膜。为了提高打磨性,一般需通过增加蓝水和白水用量来缩短施工时间,提高生产效率,这样会使漆膜颜色变绿,影响涂膜外观,不利于浅色透明涂料的涂饰,因此,提高涂膜的防绿化性就十分重要。
现有的PE底漆都需要采用有机钴作为反映的促进剂,涂刷一段时间后存在于分子间的二价钴离子被氧化为三价的钴离子导致漆膜变色。现有技术只是更换促进剂但是效果并不明显。
针对这种状况,我们开发了一种防绿化优异的PE底漆树脂应用于PE木器家具漆,改变传统PE树脂制作PE底漆防绿化差的缺点,能够较好的满足家具企业的需求。
发明内容
基于上述问题,本发明公开了一种PE防绿化底漆及其制作工艺,通过改变树脂基体成分,添加防绿化剂,改变促进剂种类,解决PE底漆的绿化问题。
为解决上述问题,本发明采用的技术方案是,本发明提供一种树脂组成的新配方,使硬化后的漆膜更致密减轻了钴离子被氧化的程度,减少了绿化,本发明更提出一种先进的改性无机钴材料,通过表面的不完全包覆,既保持钴离子作为促进剂的性能,更减少了后期钴离子被氧化的程度从而提高底漆的防绿化效果。而且无机钴表面的纳米二氧化硅在交联的分子间起到了补强的作用,使漆膜更坚硬。
防绿化PE底漆,由树脂、苯乙烯、防绿改性剂、分散剂、防沉剂、滑石粉、硬脂酸锌、消泡剂、流平剂组成,其中所述成份的重量组分为:树脂70份、苯乙烯3份、防绿改性剂0.5份、分散剂0.4份、防沉剂1份、滑石粉20份、硬脂酸锌5份、消泡剂0.3份、流平剂0.3份;
其中树脂由顺丁烯二酸酐、双环戊二烯、二乙二醇、苯乙烯组成,其中所述成分的质量分数为:顺丁烯二酸酐29-32份、双环戊二烯25-28份、二乙二醇15-18份、苯乙烯20-22份。
其中,所选的防绿改性剂为二月桂酸二丁基锡。
防绿化PE底漆的制备方法包括以下步骤:
第一步制备树脂,按照配方量依次投入二乙二醇、顺丁烯二酸酐、双环戊二烯、苯乙烯,通氮气加热升温至90-120℃开动搅拌,保温1-2后,以20℃/h速度升温至190-200℃,停止加热降至室温备用;
第二步制备底漆,按照配方重量依次加入树脂、苯乙烯、防绿改性剂、分散剂、防沉剂、滑石粉硬脂酸锌、消泡剂、流平剂常温搅拌分散2h。
4.一种防绿化PE漆使用方法,其特征在于:底漆:蓝水:白水:稀料=100∶(1.1-1.4)∶(1.2-1.6):35的比例混合。
本发明更创造性的调整了蓝水的成分,蓝水包括异辛酸钴、改性高氯酸钴的一种或多种,所述白水为过氧化甲乙酮。
所述的防绿化底漆,其特征在于所选的防绿改性剂为二月桂酸二丁基锡。
改性高氯酸钴的制备方法,将80ml无水乙醇和10ml正硅酸乙酯混合并不断搅拌,加入2g粉末状六水合高氯酸钴,将异辛酸和热水按照1:4比例混合配置为异辛酸溶液,逐滴滴加1.5ml异辛酸水溶液进正硅酸乙酯乙醇溶液中,继续搅拌十分钟抽滤烘干。异辛酸提供的酸性条件下,正硅酸乙酯水解出二氧化硅聚集包覆于高氯酸钴粉末表面,由于异辛酸酸性较弱,催化正硅酸乙酯水解速度较慢。通过控制反应时间来控制高氯酸钴粉末表面实现不完全包覆。
选用180目 砂纸打磨底材,除去底材表面的木刺,修理平整。喷涂制备好的涂料,干透测性能。
具体实施方式
实施例一:将顺丁烯二酸酐29份、双环戊二烯25份、二乙二醇18份、苯乙烯22份。通氮气加热升温至90-120℃开动搅拌,保温1-2后,以20℃/h速度升温至190-200℃,停止加热降至室温制成树脂;
将树脂70份、苯乙烯3份、分散剂0.4份、防沉剂1份、滑石粉20份、硬脂酸锌5份、消泡剂0.3份、流平剂0.3份常温搅拌分散2h制成底漆;
将底漆:异辛酸钴:过氧化甲乙酮:稀料=100∶1.1∶1.2:35的比例混合。喷涂在样板上。
实施例二:将顺丁烯二酸酐29份、双环戊二烯25份、二乙二醇18份、苯乙烯22份。通氮气加热升温至90-120℃开动搅拌,保温1-2后,以20℃/h速度升温至190-200℃,停止加热降至室温制成树脂;
将树脂70份、苯乙烯3份、二月桂酸二丁基锡0.5份、分散剂0.4份、防沉剂1份、滑石粉20份、硬脂酸锌5份、消泡剂0.3份、流平剂0.3份常温搅拌分散2h制成底漆;
将底漆:异辛酸钴:过氧化甲乙酮:稀料=100∶1.1∶1.2:35的比例混合。喷涂在样板上。
实施例三:将顺丁烯二酸酐29份、双环戊二烯25份、二乙二醇18份、苯乙烯22份。通氮气加热升温至90-120℃开动搅拌,保温1-2后,以20℃/h速度升温至190-200℃,停止加热降至室温制成树脂;
将树脂70份、苯乙烯3份、二月桂酸二丁基锡0.5份、分散剂0.4份、防沉剂1份、滑石粉20份、硬脂酸锌5份、消泡剂0.3份、流平剂0.3份常温搅拌分散2h制成底漆;
将底漆:异辛酸钴:过氧化甲乙酮:稀料=100∶1.4∶1.6:35的比例混合。喷涂在样板上。
实施例四:将顺丁烯二酸酐29份、双环戊二烯25份、二乙二醇18份、苯乙烯22份。通氮气加热升温至90-120℃开动搅拌,保温1-2后,以20℃/h速度升温至190-200℃,停止加热降至室温制成树脂;
将树脂70份、苯乙烯3份、二月桂酸二丁基锡0.5份、分散剂0.4份、防沉剂1份、滑石粉20份、硬脂酸锌5份、消泡剂0.3份、流平剂0.3份常温搅拌分散2h制成底漆;
将底漆:(异辛酸钴+改性高氯酸钴):过氧化甲乙酮:稀料=100∶(1+0.4)∶1.6:35的比例混合。喷涂在样板上。
实施例五:将顺丁烯二酸酐29份、双环戊二烯25份、二乙二醇18份、苯乙烯22份。通氮气加热升温至90-120℃开动搅拌,保温1-2后,以20℃/h速度升温至190-200℃,停止加热降至室温制成树脂;
将树脂70份、苯乙烯3份、二月桂酸二丁基锡0.5份、分散剂0.4份、防沉剂1份、滑石粉20份、硬脂酸锌5份、消泡剂0.3份、流平剂0.3份常温搅拌分散2h制成底漆;
将底漆:(异辛酸钴+改性高氯酸钴):过氧化甲乙酮:稀料=100∶(0.4+1)∶1.6:35的比例混合。喷涂在样板上。
实施例六:将顺丁烯二酸酐29份、双环戊二烯25份、二乙二醇18份、苯乙烯22份。通氮气加热升温至90-120℃开动搅拌,保温1-2后,以20℃/h速度升温至190-200℃,停止加热降至室温制成树脂;
将树脂70份、苯乙烯3份、二月桂酸二丁基锡0.5份、分散剂0.4份、防沉剂1份、滑石粉20份、硬脂酸锌5份、消泡剂0.3份、流平剂0.3份常温搅拌分散2h制成底漆;
将底漆:改性高氯酸钴:过氧化甲乙酮:稀料=100∶1.4∶1.6:35的比例混合。喷涂在样板上。
为实现对比效果,取市场常见两个品牌PE漆在同等条件下对木板进行涂刷测试作为对比例1和2。
按照中华人民共和国林业行业标准LY/T 1740-2008 对实施例1-6及对比例1-2进行测试;
防绿化性能因未有相关国家行业标准,按照企业标准测试,通过目测评价防绿化性能。
实施例实验数据:
以上对本发明的具体实施例进行了详细描述,但其只是作为范例,本发明并不限制于以上描述的具体实施例。 对于本领域技术人员而言,任何对本发明进行的等同修改和替代也都在本发明的范畴之中。 因此,在不脱离本发明的精神和范围下所作的均等变换和修改,都应涵盖在本发明的范围内。
Claims (6)
1.一种防绿化PE底漆,其特征在于:由树脂、苯乙烯、防绿改性剂、分散剂、防沉剂、滑石粉、硬脂酸锌、消泡剂、流平剂组成,其中所述成份的质量份数为:树脂70份、苯乙烯3份、防绿改性剂0.5份、分散剂0.4份、防沉剂1份、滑石粉20份、硬脂酸锌5份、消泡剂0.3份、流平剂0.3份;
其中树脂由顺丁烯二酸酐、双环戊二烯、二乙二醇、苯乙烯组成,其中所述成分的质量分数为:顺丁烯二酸酐29-32份、双环戊二烯25-28份、二乙二醇15-18份、苯乙烯20-22份。
2.根据权利要求1所述的防绿化底漆,其特征在于:所述防绿改性剂为二月桂酸二丁基锡。
3.一种权利要求1所述的PE底漆的制备方法,其特征在于:包括以下步骤:
第一步,按照配方量依次投入二乙二醇、顺丁烯二酸酐、双环戊二烯、苯乙烯 ,通氮气加热升温至90-120℃开动搅拌,保温1-2后,以20℃/h速度升温至190-200℃,停止加热降至室温制成树脂;
第二步,按照配方重量依次加入树脂、苯乙烯、防绿改性剂、分散剂、防沉剂、滑石粉硬脂酸锌、消泡剂、流平剂常温搅拌分散2h制成底漆。
4.一种权利要求1所述的PE底漆的使用方法,其特征在于:底漆:蓝水:白水:稀料=100∶(1.1-1.4)∶(1.2-1.6):35的比例混合。
5.根据权利要求4所述的PE底漆的使用方法,其特征在于:所述蓝水包括异辛酸钴、改性高氯酸钴的一种或多种,所述白水为过氧化甲乙酮。
6.根据权利要求5所述的PE底漆的使用方法,其特征在于:所述改性高氯酸钴,通过正硅酸乙酯酸性环境下水解,在高氯酸钴粉末表面不完全包覆一层纳米级二氧化硅膜。
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