CN107868236B - 一种高性能聚糖改性树脂及制备方法及其磁漆的制备方法 - Google Patents
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Abstract
本发明公开一种高性能聚糖改性树脂及制备方法及其磁漆的制备方法,属于涂料技术领域。高性能聚糖改性树脂的制备方法是在无氧的环境中将植物油酸、多元酸、聚糖、抗氧剂和溶剂混合均匀后升温到210~220℃进行酯化反应,当反应产物的格式管粘度达到40‑50S,酸值降到7‑12mgKOH/g时反应结束,再次加入溶剂兑稀,即得高性能聚糖改性树脂。本发明在树脂的反应过程中,聚糖加入到醇酸树脂的主链中,一个聚糖分子能够连接更多的植物油酸、多元酸分子,树脂的分子量更大,低分子量聚合物大大减少。通过双键的自动氧化聚合,漆膜的干性、玻璃化温度得到显著提高,漆膜的的硬度、机械强度高。
Description
技术领域
本发明涉及涂料技术领域,具体涉及一种高性能聚糖改性树脂及制备方法及其磁漆的 制备方法。
背景技术
醇酸树脂漆由于具有高丰满度、优良的光泽、柔韧性、附着力等优点,极好的施工性。 在溶剂型涂料中占有极为重要的地位和极大的份额。本身可制成清漆、磁漆、底漆、腻子 等等,更可与其它材料拼用,如与硝酸纤维素、氯化橡胶、氨基树脂、多异氰酸酯等拼用,制成其它体系涂料。
一般醇酸树脂所用原材料为:植物油或植物油酸、石油化工多元酸(如苯酐、间苯二 甲酸、对苯二甲酸)、石油化工多元醇(如乙二醇、季戊四醇、三羟甲基丙烷、新戊二醇)等。植物油或植物油酸约占50%左右的组成,且其价格相对稳定,从可持续发展战略要求及经济成本考虑都是不错的选择。
近年来,随着石化燃料(石油、煤为基础的化工原料)价格大起大落,对企业的发展、 生存有着不小的考验。
发明内容
本发明的目的则是解决上述现有技术的不足之处,用聚糖改性合成醇酸树脂及其磁漆 制备。用聚糖代替石油化工多元醇产品,与植物油酸制备了高性能的聚糖改性醇酸树脂。
本发明的目的可以通过以下技术方案实现:
一种高性能聚糖改性树脂的制备方法,该方法是在无氧的环境中将植物油酸、多元酸、 聚糖、抗氧剂和溶剂混合均匀后升温到210~220℃进行酯化反应,当反应产物的格式管粘 度达到40-50S,酸值降到7-12mgKOH/g时反应结束,再次加入溶剂兑稀,即得高性能聚 糖改性树脂。
一种高性能聚糖改性树脂,该改性树脂是通过如下方法制备得到:在无氧的环境中将 植物油酸、多元酸、聚糖、抗氧剂和溶剂混合均匀后升温到210~220℃进行酯化反应,当 反应产物的格式管粘度达到40-50S,酸值降到7-12mgKOH/g时反应结束,再次加入溶剂兑稀,即得高性能聚糖改性树脂。
本发明技术方案中:所述的植物油酸、多元酸、聚糖、抗氧剂的重量份数依次为30~60 份、1~15份、10~50份、0.01~1份
在一些优选的技术方案中:所述的植物油酸、多元酸、聚糖、抗氧剂的重量份数依次 为35~45份、2~6份、20~35份、0.01~0.5份。
在一些更优选的技术方案中:溶剂和植物油酸的质量比为2:2~3。
本发明技术方案中:所述的植物油酸选自豆油酸、亚油酸和亚麻酸中的一种或几种; 所述的多元酸为顺丁烯二甲酸酐。
本发明技术方案中:所述聚糖是选自菊粉和淀粉中的至少一种。优选:所述聚糖是质量比为2:2~5的菊粉和淀粉。
本发明技术方案中:所述抗氧剂为亚磷酸三苯酯和次磷酸中的至少一种。
本发明技术方案中:所述溶剂是选自混合烷烃、200号溶剂和脱芳溶剂油中的至少一种。
一种上述的高性能聚糖改性树脂作基料制成的高性能醇酸磁漆,该磁漆的组成包括:
本发明技术方案中:所述的颜料选自金红石钛白粉、氧化锌、炭黑、氧化铁黄、氧化铁红、碳酸钙~中的一种或几种;所述催干剂为钴或钙环烷酸盐的混合物及稀土辅助催干剂;所述溶剂是选自混合烷烃、200号溶剂、脱芳溶剂油选取其中的一种或几种。
上述高性能醇酸磁漆的制备方法,该方法是将一部分高性能聚糖改性树脂和颜料混合 均匀后进行研磨,至细度≤20微米;之后加入剩余的高性能聚糖改性树脂、催化剂和溶剂, 混合均匀,即得到高性能醇酸磁漆。
本发明的有益效果:
本发明在树脂的反应过程中,聚糖加入到醇酸树脂的主链中,一个聚糖分子能够连接 更多的植物油酸、多元酸分子,树脂的分子量更大,低分子量聚合物大大减少。通过双键 的自动氧化聚合,漆膜的干性、玻璃化温度得到显著提高,漆膜的的硬度、机械强度高。
同时,由于低分子量聚合物的减少,漆膜具有更优良的保光保色性、耐久性、耐水、耐油 性能。
具体实施方式
下面结合实施例对本发明做进一步说明,但本发明的保护范围不限于此:
表1本发明实施例1~3的高性能聚糖改性树脂配方用量
本发明中高性能聚糖改性树脂实施例1~3以及对比例1~3的制备方法如下:
第一步:在反应釜中通入氮气,以去除氧气。
第二步:在反应釜中,投入配方量的组分,开动搅拌,加溶剂升温回流,约4-5h升温到210-220℃进行酯化。
第三步:在回流保温期间取样检测粘度和酸值,当树脂粘度达到40-50S(格式管,25℃),酸值降到7-12mgKOH/g时为反应终点。
第四步:当树脂粘度和酸值合格后,通降温水进行降温至120-130℃,加入溶剂进行 兑希。
第五步:搅拌均匀,在100℃以下进行过滤、灌装,即得高性能聚糖改性树脂。
制得的高性能聚糖改性树脂,具体参数见表2。
表2本发明高性能聚糖改性树脂指标
本发明利用所得的高性能聚糖改性树脂作为基料,与颜料、催干剂、溶剂制备 高性能聚糖改性醇酸磁漆。
表3:本发明中高性能聚糖改性醇酸磁漆采用的配方用量
高性能聚糖改性醇酸磁漆的制备方法如下:
该方法是将1/2高性能聚糖改性树脂和颜料混合均匀后进行研磨,至细度≤20微米;之后加入剩余的高性能聚糖改性树脂、催化剂和溶剂,混合均匀,过滤,包装,
即得到高性能醇酸磁漆。
本发明中高性能聚糖改性醇酸磁漆的的测试结果见表4:
表4:
Claims (8)
1.一种高性能聚糖改性树脂的制备方法,其特性在于:该方法是在无氧的环境中将植物油酸、多元酸、聚糖、抗氧剂和溶剂混合均匀后升温到210~220℃进行酯化反应,当反应产物的格式管粘度达到40-50S,酸值降到7-12 mgKOH/g时反应结束,再次加入溶剂兑稀,即得高性能聚糖改性树脂;
所述的植物油酸、多元酸、聚糖、抗氧剂的重量份数依次为30~60份、1~15份、10~50份、0.01~1份;
所述的植物油酸选自豆油酸、亚油酸和亚麻酸中的一种或几种;所述的多元酸为顺丁烯二甲酸酐;
所述聚糖是选自菊粉和淀粉;所述聚糖是质量比为2: 2 ~5的菊粉和淀粉。
2.根据权利要求1所述的高性能聚糖改性树脂的制备方法,其特性在于:所述的植物油酸、多元酸、聚糖、抗氧剂的重量份数依次为35~45份、2~6份、20~35份、0.01~0.5份。
3.根据权利要求1所述的高性能聚糖改性树脂的制备方法,其特性在于:所述抗氧剂为亚磷酸三苯酯和次磷酸中的至少一种。
4.根据权利要求1所述的高性能聚糖改性树脂的制备方法,其特性在于:所述溶剂是选自混合烷烃、200号溶剂和脱芳溶剂油中的至少一种。
5.一种权利要求1所述的制备方法得到的高性能聚糖改性树脂,其特征在于:该改性树脂是通过如下方法制备得到:在无氧的环境中将植物油酸、多元酸、聚糖、抗氧剂和溶剂混合均匀后升温到210~220℃进行酯化反应,当反应产物的格式管粘度达到40-50S,酸值降到7-12 mgKOH/g时反应结束,再次加入溶剂兑稀,即得高性能聚糖改性树脂。
6.一种利用权利要求1所述的制备方法得到的高性能聚糖改性树脂作基料制成的高性能醇酸磁漆,其特性在于,该磁漆的组成包括:
高性能聚糖改性树脂 50~70份;
颜料 8~35份;
催干剂 0.1~1份;
溶剂 8~15份。
7.根据权利要求6所述的高性能醇酸磁漆,其特征在于:所述的颜料选自金红石钛白粉、氧化锌、炭黑、氧化铁黄、氧化铁红、碳酸钙其中的一种或几种;
所述催干剂为钴或钙环烷酸盐的混合物及稀土辅助催干剂;
所述溶剂是选自混合烷烃、200号溶剂、脱芳溶剂油选取其中的一种或几种。
8.一种权利要求6所述的高性能醇酸磁漆的制备方法,其特征在于:该方法是将一部分高性能聚糖改性树脂和颜料混合均匀后进行研磨,至细度≤20微米;之后加入剩余的高性能聚糖改性树脂、催干剂和溶剂,混合均匀,即得到高性能醇酸磁漆。
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