CN106010207A - 一种双组分环保型聚氨酯防水涂料及制备方法 - Google Patents
一种双组分环保型聚氨酯防水涂料及制备方法 Download PDFInfo
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Abstract
本发明属于防水技术领域,公开了一种双组分环保型聚氨酯防水涂料及其制备方法。该防水涂料由A、B两组分混合组成。其中A组分:聚醚多元醇、聚碳酸酯多元醇、聚丁二烯多元醇、二苯基甲烷二异氰酸酯、扩链剂、消泡剂、抗氧化剂、催化剂、2,3‑二甲基‑2,3‑二苯基丁烷。B组分:活性填料。本发明所公开的聚氨酯防水涂料摒弃了传统聚氨酯涂料含有的溶剂、增塑剂等对人体和环境造成危害的组分,属于环保材料;同时具有固含量高、耐老化性能、不透水性能、拉伸强度和撕裂强度高以及施工简单和防水效果好的显著特点。
Description
技术领域:
本发明涉及防水技术领域,具体的涉及一种双组分环保型聚氨酯防水涂料及制备方法。
背景技术:
防水处理在整个建筑工程中占有重要的地位,建筑防水涉及到建筑物诸多部位。房屋,路基,桥梁等易受雨水的侵蚀。例如,在过去桥梁防水不到位,导致了桥梁面层出现渗水,钢筋锈蚀而引发混凝土胀烈等严重问题。房屋缺少防水层导致房屋渗水,严重时导致墙面出现裂缝。
防水涂料与防水卷材是建筑防水材料领域主要的两大类材料。卷材不能形成连续的防水层,同时容易出现搭接界面开裂,而且会增加桥梁,钢架结构的负重。防水涂料经固化后形成的防水薄膜具有一定的延伸性、弹塑性、抗裂性、抗渗性及耐候性,能起到防水、防渗和保护作用。由于防水涂料施工简便,质量轻,粘结力强,渗透力强,应用范围广等特点,在许多领域成为了不可替代的选择。众多的防水涂料中聚氨酯防水涂料凭借其优异的性能例如,质量稳定,施工维修方便,易于调节组分,满足了建筑物不同部位的防水要求,受到国内玩防水领域的青睐。
随着社会的发展和人民生活水平的提高,人们开始更重视环保和身体健康。聚氨酯防水涂料的一些不足之处逐渐显现出来。国家和地方行业主管部门对含有煤焦油和挥发性有毒害有机溶剂的聚氨酯防水涂料采取了强制淘汰措施,并禁止使用焦油型聚氨酯防水涂料。而聚氨酯防水涂料中普遍使用的交联剂是莫卡(MOCA),该物质外观为白色至淡黄色结晶粉末,有毒及致癌倾向,亦有燃烧和爆炸危险;加热到200 ℃以上或燃烧时,该物质分解生成含氯化物和氮氧化物等有毒和有腐蚀性烟雾。现如今,市场上的聚氨酯防水涂料大多都含有大量的有机溶剂对人体和环境造成危害,例如甲苯,二甲苯等。 聚氨酯中涂料在储存过程中,密度大的填料会缓慢下沉,造成涂料分层,影响其性能。由于老化等原因,聚氨酯涂料随着时间的延长,力学性能逐渐降低,防水性能下降,甚至起不到防水作用。
发明内容:
本发明针对现有不足,提供一种双组分环保型聚氨酯防水涂料及制备方法,该工艺无溶剂,增塑剂等对环境造成危害的组分,固含量高,其中的活性填料作为交联网络中心,增加了涂料的力学性能,通过自由基缓释剂引发分子链上不饱和键聚合,增加涂料交联密度,使得涂料长时间后使用仍能保持优异的力学性能。调整配方,使得涂料粘度适中,通过水固化或气固化,适应不环境下的施工作业,过程简单方便。
实现本发明上述目的的技术方案为:
一种双组分环保型聚氨酯防水涂料,由A、B两组分组成;其中A组分包括聚醚多元醇1~20份、聚碳酸酯多元醇5~30份、聚丁二烯多元醇5~30份、二苯基甲烷二异氰酸酯10~35份、扩链剂1~3份、消泡剂0.1~份、抗氧化剂0.1~1份、催化剂0.1~1份、2,3-二甲基-2,3-二苯基丁烷0.1~1份;B组分包括活性填料8~40份。
构成上述双组分环保型聚氨酯防水涂料中,
——所述的填料为炭黑,滑石粉、碳酸钙、高岭土、硅微粉、云母粉的一种或几种组合;
——所述的聚醚多元醇包括聚醚二元醇、聚醚三元醇一种或两种组合,其相对分子质量为2000~5000,羟值25~65mgKOH/g。聚醚多元醇的添加量优选的为8~15份;
——所述的聚丁二烯多元醇相对分子质量为1000~3000,羟值为50~100mgKOH/g。聚丁二烯多元醇的添加量优选的为10~25份;
所述的聚碳酸酯二醇相对分子质量为800~1000,羟值为100~140mgKOH/g。聚碳酸酯二醇的添加量优选的为10~20份;
——所述的二苯基甲烷二异氰酸酯的添加量优选的为15~25份;
——所述的扩链剂包括1,4丁二醇、乙二醇,一缩二乙二醇;
——所述的消泡剂为BYK-A500、BYK-A501;
——所述的抗氧化剂为抗氧化剂245、抗氧化剂1010、抗氧化剂1098;
——所述的催化剂为二月桂酸二丁基锡、辛酸亚锡、三乙胺。
一种双组分环保型聚氨酯防水涂料的制备方法,包括
A组分制备:将计量的聚醚多元醇、聚碳酸酯多元醇、聚丁二烯多元醇、抗氧化剂、2,3-二甲基-2,3-二苯基丁烷、消泡剂加入反应釜中,在温度为100~120℃,真空度为-0.09MPa下搅拌1~3小时。将物料降温至55~75℃后加入二苯基甲烷二异氰酸酯和扩链剂,反应1~2小时后升温至80~85℃,加入催化剂继续反应1~3小时,降至室温后充氮气密封保存,即得双组分环保型聚氨酯防水涂料中的A组分;
B组分制备:将10~40份的填料,0.1~4份的3-氨基丙基三乙氧基硅烷加入到20~80份去离子水中,搅拌下升温至65~75℃,反应2小时,将产物至于90℃真空干燥箱中干燥至恒重,降温至50℃后加入0.1~4份的二苯基甲烷二异氰酸酯搅拌1小时,得到B组分。
具体实施方式:
在下述实施例中,申请人提供了双组分环保型聚氨酯防水涂料的具体组成和制备方法用于说明本发明可以如何实现,所提供的具体实施仅用于说明如何实现,而非构成特别限定。
实施例1
将聚醚DL-2000:5份、聚碳酸酯多元醇:20份、聚丁二烯多元醇:25份、抗氧化剂1010:0.1份、2,3-二甲基-2,3-二苯基丁烷:0.2份、消BYK-A500:0.1份加入反应釜中,在温度为100℃,真空度为-0.09MPa下搅拌1.5小时。将物料降温至55℃后加入二苯基甲烷二异氰酸酯:15份、乙二醇:1份,反应1小时后升温至81℃,加入二月桂酸二丁基锡:0.1份继续反应1小时,降至室温充氮气密封保存,即得A组分。
将30份的填料(滑石粉:硅微粉质量比=1:2),3份的3-氨基丙基三乙氧基硅烷加入到60份去离子水中,搅拌下升温至70℃,反应2小时,将产物至于90℃真空干燥箱中干燥至恒重,降温至50℃后加入3份的二苯基甲烷二异氰酸酯搅拌1小时,得到B组分。
按照上述生产工艺流程生产出A、B组分混合后,加入2份的水后涂刷,涂料产品性能为拉伸强度14.5Mpa,断裂伸长率255%,撕裂强度70N/mm,与基材(混凝土)的粘接强度4.9MPa,表干时间5小时,实干时间16小时。不透水性为0.3MPa,120分钟不透水。
实施例2
将聚醚DL-2000:5份、聚醚EP-330N:5份聚碳酸酯多元醇:15份、聚丁二烯多元醇:25份、抗氧化剂1010:0.1份、2,3-二甲基-2,3-二苯基丁烷:0.4份、BYK-A500:0.2份加入反应釜中,在温度为105℃,真空度为-0.09MPa下搅拌1.5小时。将物料降温至60℃后加入二苯基甲烷二异氰酸酯:18份、乙二醇:2份,反应1小时后升温至80℃,加入辛酸亚锡:0.1份继续反应1小时,降至室温后加入活性填料:29.2份继续搅拌0.5小时后出料,充氮气密封保存,即得A组分。
将28份的填料(碳酸钙:炭黑:云母粉质量比=1:1:2),2份的3-氨基丙基三乙氧基硅烷加入到50份去离子水中,搅拌下升温至70℃,反应2小时,将产物至于90℃真空干燥箱中干燥至恒重,降温至50℃后加入2份的二苯基甲烷二异氰酸酯搅拌1小时,得到B组分。
按照上述生产工艺流程生产出A、B组分混合后,加入4份的水后涂刷,涂料产品性能为拉伸强度15.5Mpa,断裂伸长率302%,撕裂强度73N/mm,与基材(混凝土)的粘接强5.3MPa,表干时间4.5小时,实干时间14.3小时。不透水性为0.3MPa,120分钟不透水。
实施例3
将聚醚DL-2000:8份、聚醚EP-330N:7份聚碳酸酯多元醇:10份、聚丁二烯多元醇:20份、抗氧化剂245:0.5份、2,3-二甲基-2,3-二苯基丁烷0.4份、BYK-A501:0.2份加入反应釜中,在温度为110℃,真空度为-0.09MPa下搅拌2小时。将物料降温至60℃后加入二苯基甲烷二异氰酸酯:20份、乙二醇3份,反应1小时后升温至83℃,加入辛酸亚锡:0.2份继续反应1.5小时,降至室温后充氮气密封保存,即得A组分。
将30份的填料(硅微粉:云母粉质量比=1:1),1.5份的3-氨基丙基三乙氧基硅烷加入到50份去离子水中,搅拌下升温至69℃,反应2小时,将产物至于90℃真空干燥箱中干燥至恒重,降温至50℃后加入1.5份的二苯基甲烷二异氰酸酯搅拌1小时,得到B组分。
按照上述生产工艺流程生产出A、B组分混合后加入5份的水后涂刷,涂料产品性能为拉伸强度17.1Mpa,断裂伸长率282%,撕裂强度84N/mm,与基材(混凝土)的粘接强5.4MPa,表干时间4.0小时,实干时间13小时。不透水性为0.3MPa,120分钟不透水。
实施例4
将聚醚DL-2000:10份、聚醚EP-330N:5份聚碳酸酯多元醇:20份、聚丁二烯多元醇:25份、抗氧化剂1010:1 份、2,3-二甲基-2,3-二苯基丁烷:1份、BYK-A500:0.2份加入反应釜中,在温度为120℃,真空度为-0.09MPa下搅拌2小时。将物料降温至60℃后加入二苯基甲烷二异氰酸酯:25份、1,4丁二醇2份,反应1小时后升温至85℃,加入二月桂酸二丁基锡:0.2份继续反应2小时,降至室温后充氮气密封保存,即得A组分。
将10份的填料(碳酸钙:高岭土:硅微粉质量比=1:2:1),0.8份的3-氨基丙基三乙氧基硅烷加入到20份去离子水中,搅拌下升温至73℃,反应2小时,将产物至于90℃真空干燥箱中干燥至恒重,降温至50℃后加入0.8份的二苯基甲烷二异氰酸酯搅拌1小时,得到B组分。
按照上述生产工艺流程生产出A、B组分混合后,加入8份的水后涂刷,涂料产品性能为拉伸强度18.5Mpa,断裂伸长率293%,撕裂强度89N/mm,与基材(混凝土)的粘接强7.2MPa,表干时间3.5小时,实干时间11小时。不透水性为0.3MPa,120分钟不透水。
实施例5
将聚醚DL-2000:5份、聚醚EP-330N:10份聚碳酸酯多元醇:20份、聚丁二烯多元醇:10份、抗氧化剂1098:1 份、2,3-二甲基-2,3-二苯基丁烷:1份、BYK-A500:0.2份加入反应釜中,在温度为115℃,真空度为-0.09MPa下搅拌2小时。将物料降温至60℃后加入二苯基甲烷二异氰酸酯:25份、一缩二乙二醇:2份,反应1小时后升温至85℃,加入二月桂酸二丁基锡:0.2份继续反应2小时,降至室温后加入活性填料:25.6份继续搅拌1小时后出料,充氮气密封保存,即得A组分。
将22份的填料(炭黑:滑石粉:碳酸钙:高岭土质量比=1:2:1:1),2份的3-氨基丙基三乙氧基硅烷加入到40份去离子水中,搅拌下升温至75℃,反应2小时,将产物至于90℃真空干燥箱中干燥至恒重,降温至50℃后加入2份的二苯基甲烷二异氰酸酯搅拌1小时,得到B组分。
按照上述生产工艺流程生产出A、B组分混合后涂刷,涂料产品性能为拉伸强度16.5Mpa,断裂伸长率304%,撕裂强度72N/mm,与基材(混凝土)的粘接强7.3MPa,表干时间5小时,实干时间20小时。不透水性为0.3MPa,120分钟不透水。
Claims (10)
1.一种双组分环保型聚氨酯防水涂料,其特征在于:由A、B两组分组成;其中A组分包括聚醚多元醇1~20份、聚碳酸酯多元醇5~30份、聚丁二烯多元醇5~30份、二苯基甲烷二异氰酸酯10~35份、扩链剂1~3份、消泡剂0.1~份、抗氧化剂0.1~1份、催化剂0.1~1份、2,3-二甲基-2,3-二苯基丁烷0.1~1份;B组分包括活性填料8~40份。
2.根据权利要求1所述的一种双组分环保型聚氨酯防水涂料的制备方法,其特征在于:所述的填料为炭黑,滑石粉、碳酸钙、高岭土、硅微粉、云母粉的一种或几种组合。
3.根据权利要求1所述的一种双组分环保型聚氨酯防水涂料的制备方法,其特征在于:所述的聚醚多元醇包括聚醚二元醇、聚醚三元醇一种或两种组合,其相对分子质量为2000~5000,羟值25~65mgKOH/g;聚醚多元醇的添加量优选的为8~15份。
4.根据权利要求1所述的一种双组分环保型聚氨酯防水涂料的制备方法,其特征在于:所述的聚丁二烯多元醇相对分子质量为1000~3000,羟值为50~100mgKOH/g;所述聚丁二烯多元醇的添加量优选的为10~25份。
5.根据权利要求1所述的一种双组分环保型聚氨酯防水涂料的制备方法,其特征在于:所述的聚碳酸酯二醇相对分子质量为800~1000,羟值为100~140mgKOH/g;所述聚碳酸酯二醇的添加量优选的为10~20份。
6.根据权利要求1所述的一种双组分环保型聚氨酯防水涂料的制备方法,其特征在于:所述的扩链剂包括1,4丁二醇、乙二醇,一缩二乙二醇。
7.根据权利要求1所述的一种双组分环保型聚氨酯防水涂料的制备方法,其特征在于:所述的消泡剂为BYK-A500或BYK-A501。
8.根据权利要求1所述的一种双组分环保型聚氨酯防水涂料的制备方法,其特征在于:所述的抗氧化剂为抗氧化剂245、抗氧化剂1010或抗氧化剂1098。
9.根据权利要求1所述的一种双组分环保型聚氨酯防水涂料的制备方法,其特征在于:所述的催化剂为二月桂酸二丁基锡、辛酸亚锡或三乙胺。
10.一种双组分环保型聚氨酯防水涂料的制备方法,包括
A组分制备:将计量的聚醚多元醇、聚碳酸酯多元醇、聚丁二烯多元醇、抗氧化剂、2,3-二甲基-2,3-二苯基丁烷、消泡剂加入反应釜中,在温度为100~120℃,真空度为-0.09MPa下搅拌1~3小时;将物料降温至55~75℃后加入二苯基甲烷二异氰酸酯和扩链剂,反应1~2小时后升温至80~85℃,加入催化剂继续反应1~3小时,降至室温后充氮气密封保存,即得双组分环保型聚氨酯防水涂料中的A组分;
B组分制备:将10~40份的填料,0.1~4份的3-氨基丙基三乙氧基硅烷加入到20~80份去离子水中,搅拌下升温至65~75℃,反应2小时,将产物至于90℃真空干燥箱中干燥至恒重,降温至50℃后加入0.1~4份的二苯基甲烷二异氰酸酯搅拌1小时,得到B组分。
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