CN104610847A - 一种负载纳米二氧化钛超级绝热保温涂料及其制备方法 - Google Patents

一种负载纳米二氧化钛超级绝热保温涂料及其制备方法 Download PDF

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CN104610847A
CN104610847A CN201510055194.XA CN201510055194A CN104610847A CN 104610847 A CN104610847 A CN 104610847A CN 201510055194 A CN201510055194 A CN 201510055194A CN 104610847 A CN104610847 A CN 104610847A
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张庆
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Abstract

一种负载纳米二氧化钛超级绝热保温涂料，由下列重量份的原料制成：正硅酸乙酯38-42、乙醇适量、去离子水适量、马来酸酐0.1-0.2、六甲基二氮硅烷0.7-0.9、3-氨基丙基三乙氧基硅烷0.4-0.5、纳米氧化钛0.4-0.5、E-12环氧树脂70-75、乙二醇二缩水甘油醚9-12、三乙醇胺7-7.5；本发明涂料使用了二氧化硅气凝胶，具有超级绝热性能，通过对气凝胶进行负载纳米二氧化钛处理，减缓了气凝胶的老化进程，延长了使用寿命；通过使用六甲基二氮硅烷进行改性，改善了气凝胶的亲水性，减少了气凝胶吸水破碎降解的现象。

Description

一种负载纳米二氧化钛超级绝热保温涂料及其制备方法
技术领域
本发明涉及保温涂料领域，尤其涉及一种负载纳米二氧化钛超级绝热保温涂料及其制备方法。
背景技术
二氧化硅气凝胶具有纳米孔隙，是一种多孔性固态材料，具有低密度，高孔隙率的结构特点，具有超级绝热性能。利用二氧化硅气凝胶微球与涂料用成膜材料组合，形成具有超级保温性能的涂料。
目前的二氧化硅气凝胶大多利用溶胶凝胶法，通过正硅酸乙酯等硅源水解制备，由此得到的二氧化硅气凝胶极易吸潮，遇水开裂，导致纳米孔结构遭到破坏，影响气凝胶的性能，因此在制备过程中通常要对二氧化硅凝胶进行必要的疏水改性，增强气凝胶的疏水性。其主要的手段是采用特定的疏水改性剂，将二氧化硅湿凝胶上亲水性的硅羟基替换为甲基，亚甲基等疏水的非极性基团，从而增强凝胶体的疏水性，常用作疏水改性剂的物质有三甲基氯硅烷，二甲基二乙氧基硅烷，甲基二硅胺烷，甲基三甲氧基硅烷等。
过疏水的二氧化硅气凝胶微球是一种良好的隔热材料，但是由于它表面含有大量的非极性基团，当它与水性聚合物体系混合时相容性差，界面热阻大，同时气凝胶微球分散不均，极易团聚，导致复合材料的性能下降，因此，必须对疏水二氧化硅气凝胶微球进行适当改性。
二氧化硅气凝胶气凝胶质脆易碎，强度低，抗压等性能不够强，容易失去保温性能，因次需要增加二氧化硅气凝胶的强度，增加二氧化硅气凝胶强度的方法有添加骨架，还有就是对其进行改性，增加其分子之间的连接强度，还需要改善气凝胶的其他性能，如耐紫外等性能。利用二氧化硅气凝胶与高分子涂料结合制作高保温性能的涂料，可以节约大量能源，还需要解决气凝胶与高分子的结合强度，就需要对气凝胶进行适当的改性。
发明内容
本发明的目的在于提供一种负载纳米二氧化钛超级绝热保温涂料及其制备方法。
本发明的技术方案如下：
一种负载纳米二氧化钛超级绝热保温涂料，其特征在于由下列重量份的原料制成：正硅酸乙酯38-42、乙醇适量、去离子水适量、马来酸酐0.1-0.2、六甲基二氮硅烷0.7-0.9、3-氨基丙基三乙氧基硅烷0.4-0.5、纳米氧化钛0.4-0.5、E-12环氧树脂70-75、乙二醇二缩水甘油醚9-12、三乙醇胺7-7.5；
所述负载纳米二氧化钛超级绝热保温涂料的制备方法，其特征在于包括以下步骤：
（1）用正硅酸乙酯为硅源, 用溶胶凝胶法制成二氧化硅凝胶，进行雾化处理，得到二氧化硅凝胶微球，粒径在1-300μm；
（2）在150-180重量份的去离子水中加入3-氨基丙基三乙氧基硅烷，超声处理8-10分钟，加入二氧化硅凝胶微球，混合均匀，静置12-14小时，过滤，得到氨基化二氧化硅凝胶微球；
（3）取30-40重量份的乙醇，加入六甲基二氮硅烷、纳米氧化钛，混合均匀，然后加入氨基化二氧化硅凝胶微球中，搅拌均匀，在常温下老化两天，用二氧化硅凝胶微球的3倍重量的乙醇清洗凝胶微球3次，在超临界CO2条件下干燥，得到改性的二氧化硅气凝胶微球；
（4）将其他剩余成分混合，搅拌均匀，再加入第（3）步得到的改性二氧化硅气凝胶微球，搅拌均匀，即得。
本发明的有益效果
本发明涂料使用了二氧化硅气凝胶，具有超级绝热性能，通过对气凝胶进行负载纳米二氧化钛处理，减缓了气凝胶的老化进程，延长了使用寿命；通过使用六甲基二氮硅烷进行改性，改善了气凝胶的亲水性，减少了气凝胶吸水破碎降解的现象。
具体实施方式
一种负载纳米二氧化钛超级绝热保温涂料，由下列重量份（公斤）的原料制成：正硅酸乙酯39、乙醇适量、去离子水适量、马来酸酐0.1、六甲基二氮硅烷0.8、3-氨基丙基三乙氧基硅烷0.4、纳米氧化钛0.4、E-12环氧树脂73、乙二醇二缩水甘油醚11、三乙醇胺7.4；
所述负载纳米二氧化钛超级绝热保温涂料的制备方法，包括以下步骤：
（1）用正硅酸乙酯为硅源, 用溶胶凝胶法制成二氧化硅凝胶，进行雾化处理，得到二氧化硅凝胶微球，粒径在1-300μm；
（2）在160重量份的去离子水中加入3-氨基丙基三乙氧基硅烷，超声处理9分钟，加入二氧化硅凝胶微球，混合均匀，静置13小时，过滤，得到氨基化二氧化硅凝胶微球；
（3）取35重量份的乙醇，加入六甲基二氮硅烷、纳米氧化钛，混合均匀，然后加入氨基化二氧化硅凝胶微球中，搅拌均匀，在常温下老化两天，用二氧化硅凝胶微球的3倍重量的乙醇清洗凝胶微球3次，在超临界CO2条件下干燥，得到改性的二氧化硅气凝胶微球；
（4）将其他剩余成分混合，搅拌均匀，再加入第（3）步得到的改性二氧化硅气凝胶微球，搅拌均匀，即得。
实验数据
该实施例的涂料涂敷在钢板上，厚度为3mm，经检测导热系数为0.035W/mk（25℃环境），涂膜烧蚀余量为97% ，耐81次水洗。

Claims (2)

1.一种负载纳米二氧化钛超级绝热保温涂料，其特征在于由下列重量份的原料制成：正硅酸乙酯38-42、乙醇适量、去离子水适量、马来酸酐0.1-0.2、六甲基二氮硅烷0.7-0.9、3-氨基丙基三乙氧基硅烷0.4-0.5、纳米氧化钛0.4-0.5、E-12环氧树脂70-75、乙二醇二缩水甘油醚9-12、三乙醇胺7-7.5。
2.根据权利要求1所述负载纳米二氧化钛超级绝热保温涂料的制备方法，其特征在于包括以下步骤：
（1）用正硅酸乙酯为硅源, 用溶胶凝胶法制成二氧化硅凝胶，进行雾化处理，得到二氧化硅凝胶微球，粒径在1-300μm；
（2）在150-180重量份的去离子水中加入3-氨基丙基三乙氧基硅烷，超声处理8-10分钟，加入二氧化硅凝胶微球，混合均匀，静置12-14小时，过滤，得到氨基化二氧化硅凝胶微球；
（3）取30-40重量份的乙醇，加入六甲基二氮硅烷、纳米氧化钛，混合均匀，然后加入氨基化二氧化硅凝胶微球中，搅拌均匀，在常温下老化两天，用二氧化硅凝胶微球的3倍重量的乙醇清洗凝胶微球3次，在超临界CO2条件下干燥，得到改性的二氧化硅气凝胶微球；
（4）将其他剩余成分混合，搅拌均匀，再加入第（3）步得到的改性二氧化硅气凝胶微球，搅拌均匀，即得。
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Cited By (6)

* Cited by examiner, † Cited by third party
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CN105038500A (zh) * 2015-07-08 2015-11-11 当涂县科辉商贸有限公司 一种经漆酚修饰的二氧化硅气凝胶超级绝热保温涂料及其制备方法
CN105038490A (zh) * 2015-07-07 2015-11-11 当涂县科辉商贸有限公司 一种针状硅酸盐增强的超级绝热保温涂料及其制备方法
CN105038452A (zh) * 2015-07-08 2015-11-11 当涂县科辉商贸有限公司 一种防开裂纳米孔超级绝热保温涂料及其制备方法
CN105038499A (zh) * 2015-07-08 2015-11-11 当涂县科辉商贸有限公司 一种海泡石纤维增强的纳米孔超级绝热保温涂料及其制备方法
CN105131785A (zh) * 2015-07-08 2015-12-09 当涂县科辉商贸有限公司 一种二氧化硅气凝胶微球绝热保温涂料及其制备方法
CN111978768A (zh) * 2020-09-09 2020-11-24 太仓康源化建医药有限公司 高韧性uv罩光清漆的制备方法

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CN102079949A (zh) * 2010-12-22 2011-06-01 李志� 纳米气凝胶保温涂料的制备方法

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105038490A (zh) * 2015-07-07 2015-11-11 当涂县科辉商贸有限公司 一种针状硅酸盐增强的超级绝热保温涂料及其制备方法
CN105038500A (zh) * 2015-07-08 2015-11-11 当涂县科辉商贸有限公司 一种经漆酚修饰的二氧化硅气凝胶超级绝热保温涂料及其制备方法
CN105038452A (zh) * 2015-07-08 2015-11-11 当涂县科辉商贸有限公司 一种防开裂纳米孔超级绝热保温涂料及其制备方法
CN105038499A (zh) * 2015-07-08 2015-11-11 当涂县科辉商贸有限公司 一种海泡石纤维增强的纳米孔超级绝热保温涂料及其制备方法
CN105131785A (zh) * 2015-07-08 2015-12-09 当涂县科辉商贸有限公司 一种二氧化硅气凝胶微球绝热保温涂料及其制备方法
CN111978768A (zh) * 2020-09-09 2020-11-24 太仓康源化建医药有限公司 高韧性uv罩光清漆的制备方法

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Application publication date: 20150513