CN113474392A - 防水涂料组合物 - Google Patents
防水涂料组合物 Download PDFInfo
- Publication number
- CN113474392A CN113474392A CN202080016498.4A CN202080016498A CN113474392A CN 113474392 A CN113474392 A CN 113474392A CN 202080016498 A CN202080016498 A CN 202080016498A CN 113474392 A CN113474392 A CN 113474392A
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- polyol
- coating composition
- filler
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- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
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- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical group O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 239000012972 dimethylethanolamine Substances 0.000 description 1
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- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 1
- 239000013627 low molecular weight specie Substances 0.000 description 1
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- SKCNNQDRNPQEFU-UHFFFAOYSA-N n'-[3-(dimethylamino)propyl]-n,n,n'-trimethylpropane-1,3-diamine Chemical compound CN(C)CCCN(C)CCCN(C)C SKCNNQDRNPQEFU-UHFFFAOYSA-N 0.000 description 1
- DMQSHEKGGUOYJS-UHFFFAOYSA-N n,n,n',n'-tetramethylpropane-1,3-diamine Chemical compound CN(C)CCCN(C)C DMQSHEKGGUOYJS-UHFFFAOYSA-N 0.000 description 1
- SWVGZFQJXVPIKM-UHFFFAOYSA-N n,n-bis(methylamino)propan-1-amine Chemical compound CCCN(NC)NC SWVGZFQJXVPIKM-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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- 239000000377 silicon dioxide Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
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- Polyurethanes Or Polyureas (AREA)
Abstract
一种耐候涂料组合物包含21至25重量百分比的具有至少2.0官能度的芳香族异氰酸酯、28至32重量百分比的多元醇、4至8重量百分比的具有80至200范围内分子量的二醇、38至42重量百分比的具有不大于400微米粒径的填料、以及0.01至0.03重量百分比的催化剂，其中，该涂料组合物具有至少16颗粒/m2/1小时/3.4kPa汞的水蒸气透过率，并且该涂料组合物是建筑墙或屋顶结构的组分。
Description
背景技术
1.技术领域
本发明涉及一种适用于建筑行业作为防水膜使用的防水组合物。
2.相关技术的说明
防水弹性体涂料施用于定向刨花板(OSB)、胶合板、混凝土、建筑物的水泥或石膏板的表面。这些涂料可以通过辊、刷或喷雾器原位施用，或者可以作为正在制作的OSB或胶合板施用。
Prajapati的公开WO 2013/012699 A2公开了一种基于涂料组合物的聚氨酯，其包含碱和活化剂，碱组分包含多元醇、填料、消泡剂、催化剂和分子筛。活化剂包含多异氰酸酯。优选地多元醇包含蓖麻多元醇、2-甲基1,3丙二醇、或者1,4丁二醇，并且填料包含云母。
Jenny的美国专利申请公开2014/0275416传授了具有按重量计大于40％固体含量的聚氨酯弹性体，其是由异氰酸酯组分和异氰酸酯活性组分构成的可喷洒的聚氨酯形成系统产生的。异氰酸酯组分基于异氰酸酯组分的总重量具有40至80wt.％的固体含量，其是由至少一种具有24至33％的NCO含量、2至3的官能度的芳香族多异氰酸酯和至少一种固体填料构成。异氰酸酯活性组分基于异氰酸酯活性组分的总重量具有40至80wt.％的固体含量，其是由具有25至40的羟基数和2至4的官能度的至少一种聚醚多元醇、以及至少一种固体填料构成。
Bodkhe等人的美国专利申请公开2015/0267076提供了一种涂料组合物，其包含：(a)一份湿气固化聚氨酯，其包含：具有衍生自聚醚和至少一种芳香族端基的主链的芳香族聚氨酯预聚合物，其中，涂料组合物包含基于涂料组合物总重量8wt％至90wt％的聚氨酯预聚合物；(b)基于涂料组合物总重量2至60wt％的无机填料；以及(c)基于涂料组合物总重量2至60wt％的溶剂，其中，涂料组合物在固化时是水-蒸气半渗透、空气和水的阻挡膜。
仍然需要提供低温和快速固化的防水组合物，其适合于建筑行业并可作为两部分的系统供使用。希望这样的组合物具有根据ASTM D3285不大于10的液体水耐性Cobb值以及不小于15颗粒/m2/1小时/3.4kPa的水蒸气透过率(permeability)。
发明内容
本发明涉及一种耐候涂料组合物，其包含：
21至25重量百分比的具有至少2.0的官能度的芳香族异氰酸酯，
28至32重量百分比的多元醇，
4至8重量百分比的具有80至200范围内分子量的二醇，
38至42重量百分比的具有不大于400微米粒径的填料，以及
0.01至0.03重量百分比的催化剂，
其中，
该涂料组合物具有至少16颗粒/m2/1小时/3.4kPa汞的水蒸气透过率，并且
该涂料组合物是建筑墙或屋顶结构的组分。
附图说明
图1示出了建筑外墙组件的一个实施例的分解视图。
具体实施方式
涂料组合物
在一个实施例中，耐候涂料组合物包含：
21至25重量百分比的具有至少2.0的官能度的芳香族异氰酸酯，
28至32重量百分比的多元醇，
4至8重量百分比的具有分子量范围80至200的二醇，
38至42重量百分比的具有不大于400微米粒径的填料，以及
0.01至0.03重量百分比的催化剂，其中，
该涂料组合物具有至少16颗粒/m2/1小时/3.4kPa汞的水蒸气透过率，并且
该涂料组合物是建筑墙或屋顶结构的组分。
在另一个实施例中，耐候涂料组合物包含：
22至24重量百分比的具有至少2.0的官能度的芳香族异氰酸酯，
29至31重量百分比的多元醇，
5至7重量百分比的具有80至200范围内分子量的二醇，
39至41重量百分比的具有不大于400微米粒径的填料，以及
0.015至0.028重量百分比的催化剂，其中，
该涂料组合物具有至少16颗粒/m2/1小时/3.4kPa汞的水蒸气透过率，并且
该涂料组合物是建筑墙或屋顶结构的组分。
在又另一个实施例中，耐候涂料组合物包含：
23重量百分比的具有至少2.0的官能度的芳香族异氰酸酯，
30.1重量百分比的多元醇，
6.8重量百分比的具有80至200范围内分子量的二醇，
40重量百分比的具有不大于400微米粒径的填料，以及
0.02重量百分比的催化剂，其中，
该涂料组合物具有至少16颗粒/m2/1小时/3.4kPa汞的水蒸气透过率，并且
该涂料组合物是建筑墙或屋顶结构的组分。
优选地，填料具有不大于400微米的粒径。在一些实施例中，填料具有74至400微米的粒径，同时在一些其他实施例中，填料具有80至400微米、或甚至85至400微米的粒径。优选地，填料是碳酸钙或碳酸镁钙。当填料含量太高时，涂料的钉密封能力(nailsealability)在用ASTM D7349/D7349M科学试验方案1测试时会失败。当填料含量太低时，所希望的水蒸气透过率能可能受损。
芳香族异氰酸酯可以是二苯基甲烷二异氰酸酯(MDI)、甲苯二异氰酸酯(TDI)或多聚物的二苯基甲烷二异氰酸酯(PMDI)，优选聚合的二苯基甲烷二异氰酸酯。
二醇的分子量的范围是80至200，其一个合适的实例是丁二醇。
多元醇可以是聚醚多元醇、聚丁二烯多元醇、环氧丙烷(propyleneoxide)封端的多元醇或环氧乙烷(ethyleneoxide)封端的多元醇。
优选的催化剂是二月桂酸二丁基锡。其他合适的催化剂是2,2二吗啉代二乙醚、N-甲基吗啉、N-乙基吗啉、N-丁基吗啉、2-(2-(二甲基氨基)乙氧基)乙烷-1-醇、N-(2-(二甲基氨基)乙基)正甲基乙醇胺、双(2-二甲基氨基乙基乙醚)、N1-(2-(二甲基氨基)乙基)-N2、N2-二甲基乙烷(dimethyly etane)-1,2-二元胺、N,N,N’,N’,N”-五甲基二亚乙基三胺、N,N,N’,N’-四甲基乙二胺、1,3-双(二甲基氨基)丙烷、N,N-二甲基氨基丙胺、N,N-二乙基乙醇胺、二甲基乙醇胺、N1-(3-(二甲基氨基)丙基)-N1,N3,N3-三甲基丙烷-1,3-二胺、N,N-二异丙基乙醇胺或乙基二乙醇胺。
当涂料将要在建筑上原位施用，优选地涂料作为适用于混合和原位使用的两部分的套件供应。在这种情况下，套件的A部分包含芳香族异氰酸酯并且套件的B部分包含聚醚多元醇、丁二醇、填料和催化剂。当涂料施用到正在制作的OSB或胶合板时，涂料可以作为单组分系统使用，作为两部分的套件的替代物。
优选地组合物在室温固化时具有小于24小时的固化时间。
涂料组合物的用途
涂料组合物作为耐候涂料用于建筑墙或屋顶结构时特别地有效。
图1总体上在10处示出了建筑外墙组件的一个实施例的分解视图。组件的组分包括外部披覆层11、定向刨花板或胶合板12以及绝缘层13。另外的组分例如柱框架和石膏层状位于绝缘层13的最内部一侧。防水涂料14例如在本文中所描述施用在板12的面向外的侧面上。
涂料组合物14具有至少16颗粒/m2/1小时/3.4kPa汞(23颗粒每ft2每1小时每英寸汞柱)的水蒸气透过率以及不大于10的液体水耐性Cobb值。
测试方法
填料的粒径测量
每一填料的粒径使用贝克曼库尔特(Beckman Coulter)LS 13 320激光衍射粒度分析器测量。粒径分布(PSD)的方法遵循2011年10月发行的贝克曼库尔特LS 13 320操作说明书部分编号B05577AB中所描述。
水蒸气透过率(WVP)测量
组合物的涂料膜通过刮涂的方法在隔离衬垫(泰克尼康(Technicote):53#SCKLINER L-3)上制备。具有0.3mm(12密耳)标称厚度的涂料使用0.5mm(20密耳)间隙的刮涂棒获得。将膜在室温环境中固化过夜。
独立式膜的WVP根据ASTM D6701-01使用MOCON 100.4K测试机器在38℃和100％RH时测试。对于每一个样品，从膜剪下两份样本并用以获得平均的WVP值。
吸水性测量(Cobb测试)
根据ASTM 5795-16的Cobb测试使用
(路易斯安那太平洋(Louisiana Pacific))作为基板并且使用如上所述的刮涂方法将涂料配方涂覆在
上。基板在涂料之前在60℃条件下过夜。
实例
根据本发明制备的实例由数值来指明。对照实例或对比实例由字母来指明。
材料
具有至少2.0官能度的芳香族异氰酸酯是聚合MDI，从密歇根州米德兰的陶氏化学(Dow Chemical)以商品名PAPI 27可得。
多元醇是聚醚多元醇也是从陶氏化学以商品名Voranol 4240可得。
丁二醇来自密理博西格玛(Millipore Sigma)。
碳酸钙填料等级来自马里兰州基斯维尔的英格瓷(Imerys)碳酸盐。
MMT纳米粘土填料是蒙脱土处理的纳米粘土，表面改性的填料(lot MKBL3496V)，来自密苏里州圣路易斯密理博西格玛。
石墨(<20微米，合成的)填料也来自密理博西格玛。
海泡石黏土来自德克斯州冈萨雷斯的南部粘土制品公司(Southern ClayProducts)。
膨润土和Tixogel VZ和VP触变胶从康涅狄格州沃灵福德的毕克化学美国公司(BYK USA Inc)可得。
触变的二氧化硅、滑石和1/16磨碎玻璃纤维源自俄亥俄州布鲁克维尔的格雷创(FibreGlast)。
催化剂是二月桂酸二丁基锡，来自密理博西格玛公司。
制备
将Voranol 4240多元醇、二月桂酸二丁基锡催化剂和丁二醇通过双轴快速混合器(Flacktek DAC-150)混合。然后加入填料，也使用快速混合器。这构成部分B。在作为WRB涂料施用之前，将部分B组分与部分A(PAPITM27)通过快速混合器以2000rpm混合30秒。在以下表1示出了配方。
表1中所有配方具有50％的硬链段。聚氨酯主链中硬链段百分比是低分子量物种的质量分率(这里不大于500g/mol)。在这种情况下，硬链段包含异氰酸酯的质量分率加上丁二醇链段增长剂的质量分率。相反地，软链段是更高Mw物种的质量分率，其典型地仅为多元醇。
表1
表2提供了关于实例中使用的填料粒径的一些进一步的信息。
表2
然后将组合物涂覆在衬垫上用于水蒸气透过率和吸水性测试。还提到了涂料的目视品质。具有差的目视品质或根据ASTM D3285大于10的液体水耐性Cobb值或低于23颗粒/ft2/1小时/英寸Hg(15颗粒/m2/1小时/3.4kPa)的水蒸气透过率的这些涂料被认为不可接受并且引用作为比较实例。测试结果在表3中示出。
表3
*基于一式三份吸水测试的合并方差的标准误差为±0.4单位。
Claims (12)
1.一种耐候涂料组合物，其包含：
21至25重量百分比的具有至少2.0的官能度的芳香族异氰酸酯，
28至32重量百分比的多元醇，
4至8重量百分比的具有80至200范围内的分子量的二醇，
38至42重量百分比的具有不大于400微米粒径的填料，以及
0.01至0.03重量百分比的催化剂，
其中，
该涂料组合物具有至少16颗粒/m2/1小时/3.4kPa汞的水蒸气透过率，并且
该涂料组合物是建筑墙或屋顶结构的组分。
2.如权利要求1所述的组合物，其中，该芳香族异氰酸酯是二苯基甲烷二异氰酸酯、甲苯二异氰酸酯或聚合的二苯基甲烷二异氰酸酯。
3.如权利要求1所述的组合物，其中，该多元醇是聚醚多元醇、聚丁二烯多元醇、环氧丙烷封端的多元醇或环氧乙烷封端的多元醇。
4.如权利要求1所述的组合物，其中，该二醇是丁二醇。
5.如权利要求1所述的组合物，其中，该填料是碳酸钙或碳酸镁钙，其都具有74至400微米的粒径。
6.如权利要求1所述的组合物，其中，该催化剂是二月桂酸二丁基锡。
7.如权利要求1所述的组合物，其中，该组合物包含22至24重量百分比的芳香族异氰酸酯。
8.如权利要求1所述的组合物，其中，该组合物包含29至31重量百分比的多元醇。
9.如权利要求1所述的组合物，其中，该组合物包含5至7重量百分比的具有80至200范围内的分子量的二醇。
10.如权利要求1所述的组合物，其中，该组合物包含39至41重量百分比的填料。
11.如权利要求1所述的组合物，其中，该组合物包含0.015至0.025重量百分比的催化剂。
12.如权利要求5所述的组合物，其中，该碳酸钙或碳酸镁钙具有80至400微米的粒径。
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| CN104540864A (zh) * | 2012-08-06 | 2015-04-22 | 巴斯夫欧洲公司 | 具有提高的耐化学性的聚脲弹性体 |
| CN104263227A (zh) * | 2014-09-17 | 2015-01-07 | 天津长园电子材料有限公司 | 高铁混凝土表面强防水薄涂型聚氨酯涂料及其涂装方法 |
| CN106752850A (zh) * | 2017-01-19 | 2017-05-31 | 付启兴 | 可迅速固化、防水、耐高低温、低voc聚氨酯涂料 |
Also Published As
| Publication number | Publication date |
|---|---|
| US11198790B2 (en) | 2021-12-14 |
| EP3941956B1 (en) | 2023-03-08 |
| WO2020190899A1 (en) | 2020-09-24 |
| JP2022526732A (ja) | 2022-05-26 |
| CA3132059A1 (en) | 2020-09-24 |
| EP3941956A1 (en) | 2022-01-26 |
| US20200299540A1 (en) | 2020-09-24 |
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