CN105907217A - 一种高性能抗污外墙墙面漆的制备方法 - Google Patents

一种高性能抗污外墙墙面漆的制备方法 Download PDF

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CN105907217A
CN105907217A CN201610553037.6A CN201610553037A CN105907217A CN 105907217 A CN105907217 A CN 105907217A CN 201610553037 A CN201610553037 A CN 201610553037A CN 105907217 A CN105907217 A CN 105907217A
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仇颖莹
盛海丰
王龙
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Abstract

本发明公开了一种高性能抗污外墙墙面漆的制备方法,属于外墙墙面漆制备技术领域。针对目前外墙墙面漆疏水性和耐冲刷性能差,并易产生霉变,且自清洁性能低,易起泡和漆膜脱落的问题,本发明提供了一种利用硅烷偶联剂KH‑570对纳米二氧化硅和二氧化钛表面改性,一定程度上减少二氧化硅和二氧化钛表面羟基的数量,减少团聚,并将二氧化硅和二氧化钛由亲水型转变为疏水型,分子极性减弱,表面能降低,再将改性纳米二氧化硅和改性纳米二氧化钛与纯丙乳液等混合搅拌后,于摇床振荡处理制得高性能抗污外墙墙面漆的方法。本发明制备步骤简单,所得产品疏水性和耐冲刷性能好,无霉变产生,有效解决了自清洁性能低,易起泡和漆膜脱落问题。

Description

一种高性能抗污外墙墙面漆的制备方法
技术领域
本发明涉及一种高性能抗污外墙墙面漆的制备方法,属于外墙墙面漆制备技术领域。
背景技术
现代建筑对外墙涂料提出了“三高一低”的要求,即高耐候性、高耐沾污性、高保色性和低毒性。由于外墙墙面漆的优异性能,在建筑领域广泛应用。外墙墙面漆,由水、颜料、填料等配制而成的组合物,可遮盖墙体的微细裂缝,因而可以对建筑物的外墙起装饰和防护作用。由于环境污染日趋严重,我国一些地区已经成为酸雨多发区,不仅对人类自身健康和植物有危害,还能与外墙墙面漆中碳酸钙、高岭土、滑石粉等填料物质发生化学反应,从而破坏其漆膜的结构,进一步降低其抗污能力,从而使外墙墙面漆失去装饰和保护功能。外墙长期暴露在大气中,要经常受到雨水的冲刷民,因而外墙乳胶漆必须具备很好的耐水性能;大气中的灰尘和其他物质沾污涂层后,涂层会失去原来的美观效果,因而外墙乳胶漆必须不易被这些物质沾污或沾污后易清洗;现有外墙墙面漆漆膜较软,虽具有较好的弹性,但玻璃化温度较低,粘性较大,疏水性和耐冲刷性能差,并易产生霉变,且自清洁性能低,易起泡和漆膜脱落。
发明内容
本发明所要解决的技术问题:针对目前外墙墙面漆疏水性和耐冲刷性能差,并易产生霉变,且自清洁性能低,易起泡和漆膜脱落的弊端,提供了一种利用硅烷偶联剂KH-570对纳米二氧化硅和二氧化钛表面改性,一定程度上减少二氧化硅和二氧化钛表面羟基的数量,减少团聚,并将二氧化硅和二氧化钛由亲水型转变为疏水型,分子极性减弱,表面能降低,再将改性纳米二氧化硅和改性纳米二氧化钛与纯丙乳液等混合搅拌后,于摇床振荡处理制得高性能抗污外墙墙面漆的方法。本发明制备步骤简单,所得产品疏水性和耐冲刷性能好,无霉变产生,有效解决了自清洁性能低,易起泡和漆膜脱落问题。
为解决上述技术问题,本发明采用如下所述的技术方案是:
(1)量取20~30mL叔丁胺,加入200~300mL去离子水中,搅拌均匀后,分别加入200~300mL环己烷、50~75mL油酸和35~50mL四正丙醇钛后,转入反应釜中,密封后置于鼓风干燥箱中,在175~180℃下,持续加热4~5h,冷却至室温,取上层油性液体加入等体积的甲醇中,混合后在5500~6000r/min条件下离心3~5min,过滤,将滤渣置于60~65℃真空干燥箱中干燥2~3h,并放入粉碎机粉碎,过300目筛,得疏水型纳米二氧化钛;
(2)将0.15~0.20g硅烷偶联剂KH-570加入4~5mL去离子水中,水解30~40min后,分别向其中加入300~320mL无水乙醇和上述疏水型纳米二氧化钛,在80~85℃恒温水浴下,以300~400r/min搅拌30~35min,过滤,用无水乙醇洗涤滤渣2~3次,并用去离子水洗涤1~2次,再放入50~55℃鼓风干燥箱中干燥20~24h,得改性纳米二氧化钛,备用;
(3)称取5~10g纳米二氧化硅,放入180~200℃鼓风干燥箱中干燥20~24h后,加入100~120mL质量分数为70%乙醇溶液中,以300W超声分散2~3h,再加入4~5mL质量分数为20%硅烷偶联剂KH-570,并用质量分数为10%乙二酸溶液调节pH至3.0~3.5,在70~75℃恒温水浴下,以300~400r/min搅拌3~4h后,置于离心机中离心分离,收集下层沉淀在60~65℃真空干燥箱中干燥5~6h,得表面改性纳米二氧化硅;
(4)分别称量380~420g纯丙乳液,200~250mL去离子水,125~150g碳酸钙,15~20g上述步骤(2)制备的改性纳米二氧化钛,5~10g上述表面改性纳米二氧化硅,10~23g丙二醇苯醚,0.3~1.2g非硅酮类消泡剂,4~6g丙烯酸,以600~800r/min搅拌20~30min,并置于摇床中振荡处理2~3h,得高性能抗污外墙墙面漆。
本发明的应用方法:先用双组份抗裂腻子进行找平,打磨平整并保养6~8天,将制备得到的高性能抗污外墙墙面漆,用毛刷由上而下、竖刷的原则涂刷在外墙墙面上,保持力度均匀,涂刷厚度为0.65~0.75mm,待其固化即可。该外墙墙面漆耐沾污能力好,漆膜不易起泡脱落,耐冲刷性和自清洁能力强。
本发明与其他方法相比,有益技术效果是:
(1)本发明制备步骤简单,所得产品疏水性和耐冲刷性能好,无霉变产生;
(2)使用后漆膜不易起泡脱落,耐冲刷性和自清洁能力强。
具体实施方式
首先量取20~30mL叔丁胺,加入200~300mL去离子水中,搅拌均匀后,分别加入200~300mL环己烷、50~75mL油酸和35~50mL四正丙醇钛后,转入反应釜中,密封后置于鼓风干燥箱中,在175~180℃下,持续加热4~5h,冷却至室温,取上层油性液体加入等体积的甲醇中,混合后在5500~6000r/min条件下离心3~5min,过滤,将滤渣置于60~65℃真空干燥箱中干燥2~3h,并放入粉碎机粉碎,过300目筛,得疏水型纳米二氧化钛;然后将0.15~0.20g硅烷偶联剂KH-570加入4~5mL去离子水中,水解30~40min后,分别向其中加入300~320mL无水乙醇和上述疏水型纳米二氧化钛,在80~85℃恒温水浴下,以300~400r/min搅拌30~35min,过滤,用无水乙醇洗涤滤渣2~3次,并用去离子水洗涤1~2次,再放入50~55℃鼓风干燥箱中干燥20~24h,得改性纳米二氧化钛,备用;再称取5~10g纳米二氧化硅,放入180~200℃鼓风干燥箱中干燥20~24h后,加入100~120mL质量分数为70%乙醇溶液中,以300W超声分散2~3h,再加入4~5mL质量分数为20%硅烷偶联剂KH-570,并用质量分数为10%乙二酸溶液调节pH至3.0~3.5,在70~75℃恒温水浴下,以300~400r/min搅拌3~4h后,置于离心机中离心分离,收集下层沉淀在60~65℃真空干燥箱中干燥5~6h,得表面改性纳米二氧化硅;最后分别称量380~420g纯丙乳液,200~250mL去离子水,125~150g碳酸钙,15~20g上述制备的改性纳米二氧化钛,5~10g上述表面改性纳米二氧化硅,10~23g丙二醇苯醚,0.3~1.2g非硅酮类消泡剂,4~6g丙烯酸,以600~800r/min搅拌20~30min,并置于摇床中振荡处理2~3h,得高性能抗污外墙墙面漆。
实例1
首先量取20mL叔丁胺,加入200mL去离子水中,搅拌均匀后,分别加入200mL环己烷、50mL油酸和35mL四正丙醇钛后,转入反应釜中,密封后置于鼓风干燥箱中,在175℃下,持续加热4h,冷却至室温,取上层油性液体加入等体积的甲醇中,混合后在5500r/min条件下离心3min,过滤,将滤渣置于60℃真空干燥箱中干燥2h,并放入粉碎机粉碎,过300目筛,得疏水型纳米二氧化钛;然后将0.15g硅烷偶联剂KH-570加入4mL去离子水中,水解30min后,分别向其中加入300mL无水乙醇和上述疏水型纳米二氧化钛,在80℃恒温水浴下,以300r/min搅拌30min,过滤,用无水乙醇洗涤滤渣2次,并用去离子水洗涤1次,再放入50℃鼓风干燥箱中干燥20h,得改性纳米二氧化钛,备用;再称取5g纳米二氧化硅,放入180℃鼓风干燥箱中干燥20h后,加入100mL质量分数为70%乙醇溶液中,以300W超声分散2h,再加入4mL质量分数为20%硅烷偶联剂KH-570,并用质量分数为10%乙二酸溶液调节pH至3.0,在70℃恒温水浴下,以300r/min搅拌3h后,置于离心机中离心分离,收集下层沉淀在60℃真空干燥箱中干燥5h,得表面改性纳米二氧化硅;最后分别称量380g纯丙乳液,200mL去离子水,125g碳酸钙,15g上述制备的改性纳米二氧化钛,5g上述表面改性纳米二氧化硅,10g丙二醇苯醚,0.3g非硅酮类消泡剂,4g丙烯酸,以600r/min搅拌20min,并置于摇床中振荡处理2h,得高性能抗污外墙墙面漆。
先用双组份抗裂腻子进行找平,打磨平整并保养6天,将制备得到的高性能抗污外墙墙面漆,用毛刷由上而下、竖刷的原则涂刷在外墙墙面上,保持力度均匀,涂刷厚度为0.65mm,待其固化即可。该外墙墙面漆耐沾污能力好,漆膜不易起泡脱落,耐冲刷性和自清洁能力强。
实例2
首先量取25mL叔丁胺,加入250mL去离子水中,搅拌均匀后,分别加入250mL环己烷、62mL油酸和42mL四正丙醇钛后,转入反应釜中,密封后置于鼓风干燥箱中,在178℃下,持续加热5h,冷却至室温,取上层油性液体加入等体积的甲醇中,混合后在5750r/min条件下离心4min,过滤,将滤渣置于63℃真空干燥箱中干燥3h,并放入粉碎机粉碎,过300目筛,得疏水型纳米二氧化钛;然后将0.18g硅烷偶联剂KH-570加入5mL去离子水中,水解35min后,分别向其中加入310mL无水乙醇和上述疏水型纳米二氧化钛,在83℃恒温水浴下,以350r/min搅拌33min,过滤,用无水乙醇洗涤滤渣3次,并用去离子水洗涤2次,再放入53℃鼓风干燥箱中干燥22h,得改性纳米二氧化钛,备用;再称取8g纳米二氧化硅,放入190℃鼓风干燥箱中干燥22h后,加入110mL质量分数为70%乙醇溶液中,以300W超声分散3h,再加入5mL质量分数为20%硅烷偶联剂KH-570,并用质量分数为10%乙二酸溶液调节pH至3.3,在73℃恒温水浴下,以350r/min搅拌4h后,置于离心机中离心分离,收集下层沉淀在63℃真空干燥箱中干燥6h,得表面改性纳米二氧化硅;最后分别称量400g纯丙乳液,230mL去离子水,140g碳酸钙,18g上述制备的改性纳米二氧化钛,8g上述表面改性纳米二氧化硅,16g丙二醇苯醚,0.8g非硅酮类消泡剂,5g丙烯酸,以700r/min搅拌25min,并置于摇床中振荡处理3h,得高性能抗污外墙墙面漆。
先用双组份抗裂腻子进行找平,打磨平整并保养7天,将制备得到的高性能抗污外墙墙面漆,用毛刷由上而下、竖刷的原则涂刷在外墙墙面上,保持力度均匀,涂刷厚度为0.70mm,待其固化即可。该外墙墙面漆耐沾污能力好,漆膜不易起泡脱落,耐冲刷性和自清洁能力强。
实例3
首先量取30mL叔丁胺,加入300mL去离子水中,搅拌均匀后,分别加入300mL环己烷、75mL油酸和50mL四正丙醇钛后,转入反应釜中,密封后置于鼓风干燥箱中,在180℃下,持续加热5h,冷却至室温,取上层油性液体加入等体积的甲醇中,混合后在6000r/min条件下离心5min,过滤,将滤渣置于65℃真空干燥箱中干燥3h,并放入粉碎机粉碎,过300目筛,得疏水型纳米二氧化钛;然后将0.20g硅烷偶联剂KH-570加入5mL去离子水中,水解40min后,分别向其中加入320mL无水乙醇和上述疏水型纳米二氧化钛,在85℃恒温水浴下,以400r/min搅拌35min,过滤,用无水乙醇洗涤滤渣3次,并用去离子水洗涤2次,再放入55℃鼓风干燥箱中干燥24h,得改性纳米二氧化钛,备用;再称取10g纳米二氧化硅,放入200℃鼓风干燥箱中干燥24h后,加入120mL质量分数为70%乙醇溶液中,以300W超声分散3h,再加入5mL质量分数为20%硅烷偶联剂KH-570,并用质量分数为10%乙二酸溶液调节pH至3.5,在75℃恒温水浴下,以400r/min搅拌4h后,置于离心机中离心分离,收集下层沉淀在65℃真空干燥箱中干燥6h,得表面改性纳米二氧化硅;最后分别称量420g纯丙乳液,250mL去离子水,150g碳酸钙,20g上述制备的改性纳米二氧化钛,10g上述表面改性纳米二氧化硅,23g丙二醇苯醚,1.2g非硅酮类消泡剂,6g丙烯酸,以800r/min搅拌30min,并置于摇床中振荡处理3h,得高性能抗污外墙墙面漆。
先用双组份抗裂腻子进行找平,打磨平整并保养8天,将制备得到的高性能抗污外墙墙面漆,用毛刷由上而下、竖刷的原则涂刷在外墙墙面上,保持力度均匀,涂刷厚度为0.75mm,待其固化即可。该外墙墙面漆耐沾污能力好,漆膜不易起泡脱落,耐冲刷性和自清洁能力强。

Claims (1)

1.一种高性能抗污外墙墙面漆的制备方法,其特征在于具体制备步骤为:
(1)量取20~30mL叔丁胺,加入200~300mL去离子水中,搅拌均匀后,分别加入200~300mL环己烷、50~75mL油酸和35~50mL四正丙醇钛后,转入反应釜中,密封后置于鼓风干燥箱中,在175~180℃下,持续加热4~5h,冷却至室温,取上层油性液体加入等体积的甲醇中,混合后在5500~6000r/min条件下离心3~5min,过滤,将滤渣置于60~65℃真空干燥箱中干燥2~3h,并放入粉碎机粉碎,过300目筛,得疏水型纳米二氧化钛;
(2)将0.15~0.20g硅烷偶联剂KH-570加入4~5mL去离子水中,水解30~40min后,分别向其中加入300~320mL无水乙醇和上述疏水型纳米二氧化钛,在80~85℃恒温水浴下,以300~400r/min搅拌30~35min,过滤,用无水乙醇洗涤滤渣2~3次,并用去离子水洗涤1~2次,再放入50~55℃鼓风干燥箱中干燥20~24h,得改性纳米二氧化钛,备用;
(3)称取5~10g纳米二氧化硅,放入180~200℃鼓风干燥箱中干燥20~24h后,加入100~120mL质量分数为70%乙醇溶液中,以300W超声分散2~3h,再加入4~5mL质量分数为20%硅烷偶联剂KH-570,并用质量分数为10%乙二酸溶液调节pH至3.0~3.5,在70~75℃恒温水浴下,以300~400r/min搅拌3~4h后,置于离心机中离心分离,收集下层沉淀在60~65℃真空干燥箱中干燥5~6h,得表面改性纳米二氧化硅;
(4)分别称量380~420g纯丙乳液,200~250mL去离子水,125~150g碳酸钙,15~20g上述步骤(2)制备的改性纳米二氧化钛,5~10g上述表面改性纳米二氧化硅,10~23g丙二醇苯醚,0.3~1.2g非硅酮类消泡剂,4~6g丙烯酸,以600~800r/min搅拌20~30min,并置于摇床中振荡处理2~3h,得高性能抗污外墙墙面漆。
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CN106675238A (zh) * 2016-12-11 2017-05-17 雷笑天 一种光催化玻璃自清洁涂料的制备方法
CN112608649A (zh) * 2020-12-11 2021-04-06 南通勘察设计有限公司 一种抗脱落型建筑外墙用防水涂料及其制备方法
CN115785724A (zh) * 2022-12-13 2023-03-14 弋阳县华裕建筑材料有限公司 一种外墙抗裂柔性耐水腻子粉

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* Cited by examiner, † Cited by third party
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CN106675238A (zh) * 2016-12-11 2017-05-17 雷笑天 一种光催化玻璃自清洁涂料的制备方法
CN112608649A (zh) * 2020-12-11 2021-04-06 南通勘察设计有限公司 一种抗脱落型建筑外墙用防水涂料及其制备方法
CN115785724A (zh) * 2022-12-13 2023-03-14 弋阳县华裕建筑材料有限公司 一种外墙抗裂柔性耐水腻子粉
CN115785724B (zh) * 2022-12-13 2023-06-30 弋阳县华裕建筑材料有限公司 一种外墙抗裂柔性耐水腻子粉

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