CN104312346A - 一种混凝土墙面防潮防泛碱漆及制备方法 - Google Patents

一种混凝土墙面防潮防泛碱漆及制备方法 Download PDF

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CN104312346A
CN104312346A CN201410569486.0A CN201410569486A CN104312346A CN 104312346 A CN104312346 A CN 104312346A CN 201410569486 A CN201410569486 A CN 201410569486A CN 104312346 A CN104312346 A CN 104312346A
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王超
陈之光
董玉罡
贾兴起
刘玉洋
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SHANDONG HUABANG CONSTRUCTION GROUP CO Ltd
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Abstract

混凝土和水泥砂浆制品的表面很容易产生一种白色物质,我们称之为泛碱。混凝土中的主要成分是硅酸钙,遇水后发生水化反应,形成游离钙、硅酸和氢氧根,在毛细压作用下,水会扩散到墙体表面,此时游离的钙、钠、钾等物质会以水为载体迁移到墙体表面,到达混凝土表面后,随着水分蒸发,这些物质残留在混凝土表面,形成白色粉末状晶体,或者与空气中二氧化碳反应在混凝土表面结晶形成白色硬块,这些白色物质就是混凝土泛碱。在某些条件下,泛碱长时间顽固地残留在混凝土的表面上,破坏了混凝土表面颜色的均一性,混凝土建筑物表面造成了一定的损害。本发明提供了一种混凝土墙面防潮防泛碱漆及制备方法,此种漆无毒无味,属于环保性材料,防潮防泛碱效果优良。

Description

一种混凝土墙面防潮防泛碱漆及制备方法
技术领域
本发明属于化工涂料类,具体是一种混凝土墙面专用防潮防泛碱漆及制备方法。
技术背景
在日常生活中我们经常看见建筑物墙面特别是卫生间墙面存在许多灰白色疏松状物质,这就是所谓的泛碱现象,其中有些墙面还带有明显的水印,这说明这些泛碱墙面常常伴有潮湿现象。泛碱可使墙面涂料起鼓、开裂或脱落,有时使着色涂料颜色暗淡、发白或褪色;泛碱还可能使基层水泥砂浆灰变松散、外翻;泛碱严重影响建筑物的美观,建筑物墙体受潮湿侵害是目前工业与民用建筑中存在的普遍问题,严重影响着人们的健康和建筑物结构的使用寿命。随着建筑行业的发展,人们对混凝土建筑和装饰性的混凝土制品尤其是彩色混凝土来说,如何防治泛碱,已是一个具有重大意义、不容忽视的课题。要达到防治泛碱的目的,必须从分析泛碱形成的机理着手,然后才能采取措施,对症下药。为此特提出本发明:一种混凝土墙面专用防潮防泛碱涂料及其制备方法。
发明内容
建筑物墙面由于潮湿、碱性特别是卫生间墙面还有特殊气味容易导致墙面泛碱现象。泛碱产生的具体原因:1、潮湿。墙面的水分在向外扩散的时候就会携带墙体中的可溶性盐分通过混凝土中的毛细孔迁移到墙体表面或者接近表面处,盐分结晶析出便形成我们所看到的灰白色膨松状物质。2、墙体中可溶性盐分的存在,构成墙体的基本材料如水泥、砂、石、砖等含有可溶性盐分,比如水泥中的CaO,K2O,Na2O等,水泥水化以后继而与空气中的CO2反应生成CaCO3,K2CO3,Na2CO3等,此外为了改善混凝土或者砂浆的和易性,降低水灰比,增加密实度和抗渗性能需要加入外加剂以及填充料,如常见的多种无机盐Na2SO4、NaCO3、K2CO3、NaNO3等。3、墙体的密实性。墙体的密实性越差,墙体中毛细孔隙越多,这些孔隙是水和无机盐的通道,因此发生泛碱现象的几率就更大。4、墙体的碱性。比如卫生间的墙体处在特殊气味环境中(富含氨),可与墙体表面的盐,发生复分解反应,生成NH4NO3、(NH4)2SO4等。
根据以上几点泛碱的原因,特发明了一种混凝土建筑物墙面防潮防泛碱漆。为了防止泛碱的发生首先要在墙体表面涂刷一层具有渗透作用的涂料,堵塞墙体内部的孔隙,把墙体内部水分和可溶性盐的向墙体表面迁移的通道堵住,将水分和可溶性盐封堵在墙体的内部。其次,在墙体表面涂刷抗碱性的涂料,可以阻止盐分的结晶以及与氨的复分解反应。
混凝土墙面防潮防泛碱涂料包括底漆和面漆两部分,底漆起到封闭的作用,它含有有机硅,具有很强的渗透能力,能够渗透到墙体内部,能与水泥中的硅作用形成憎水的聚硅氧烷膜,这种网状结构的树脂能够阻塞水泥砂浆内部的毛细孔,增强砂浆的密实性,从而有效的阻止水分以及其携带的可溶性盐向墙体表面扩散的作用。
面涂含有耐碱性能非常好的有机硅改性的丙烯酸树脂,抗污能力强,能抵抗碱性的侵蚀,耐候性优良,抗老化;耐水性好,涂膜任性大,耐擦洗;面涂中使用几种乳液冷混后使用,可以发挥各自优点,扬长避短;面涂中还含有较多碱性填料,如硅灰石粉和灰钙粉,它透气性好、耐碱性、耐水、抗紫外线、抗老化,对于卫生间这种特殊的墙面可以有效抵抗氨气的侵蚀。
注意事项
对于新建的建筑物墙面,应首先涂刷封闭底漆,再涂刷面漆。
对于旧的建筑物墙面,如果墙面上有泛碱,首先使用毛刷将墙体表面的可溶性盐刷掉,再使用4%的草酸溶液在墙体表面涂刷一遍,以把所形成的泛碱除去,再涂刷底漆和面漆;如果没有泛碱,将墙面清洗干净,再分别涂刷底漆和面漆。
建筑物墙面防潮防泛碱涂料,无毒无味,属于环保型配方,它抗泛碱效果好,抗污能力强,能抵抗碱的侵蚀;它耐水,耐擦洗;它抗紫外线照射,抗老化,耐候性优良。
实施例一
封闭底漆
配方:
原料名称              质量分数
有机硅-丙烯乳液        30
硅溶胶                 19
有机硅乳液             11
有机硅消泡剂           2
水                     38。
工艺流程
取有机硅-丙烯乳液,硅溶胶,有机硅乳液和水放入胶体磨中混匀,加入有机硅消泡剂,搅拌均匀,备用。
面漆
配方
原材料名称         质量百分数(%)
有机硅-丙烯酸乳液       15
纯丙烯酸乳液            25
硅溶液                  5
乙二醇                  8
硅灰石粉                4 
灰钙粉                  6
金红石型钛白粉          7
立德粉                  5
滑石粉                  2
六偏磷酸钠              0.5
有机硅消泡剂            1.5
防霉剂                  0.1
防腐剂                  0.2
水                      20.7。
工艺流程
取六偏磷酸钠,加入水,搅拌使完全溶解。随后依次慢慢加入硅灰石粉、灰钙粉、钛白粉、立德粉、滑石粉、防霉剂和防腐剂,在三磙研磨机上研磨至20-30nm。加入有机硅-丙烯酸乳液、纯丙烯酸乳液、硅溶胶和乙二醇,低速搅拌。加入有机硅消泡剂、低速均匀搅拌、过滤、检验、包装、即得面漆成品。
实施例二
封闭底漆
配方:
原料名称              质量分数
有机硅-丙烯乳液        25
硅溶胶                 30
有机硅乳液             15
有机硅消泡剂           1
水                     29。
工艺流程
取有机硅-丙烯乳液,硅溶胶,有机硅乳液和水放入胶体磨中混匀,加入有机硅消泡剂,搅拌均匀,备用。
面漆
配方
原材料名称         质量百分数(%)
有机硅-丙烯酸乳液       20
纯丙烯酸乳液            20
硅溶液                  5
乙二醇                  9
硅灰石粉                4 
灰钙粉                  8
金红石型钛白粉          5
立德粉                  2
滑石粉                  2
六偏磷酸钠              0.5
有机硅消泡剂            1.5
防霉剂                  0.1
防腐剂                  0.2
水                      22.7。
工艺流程
取六偏磷酸钠,加入水,搅拌使完全溶解。加入硅灰石粉、灰钙粉、钛白粉、立德粉、滑石粉、防霉剂和防腐剂,在三磙研磨机上研磨至20-30nm.加入有机硅-丙烯酸乳液、纯丙烯酸乳液、硅溶胶和乙二醇,低速搅拌。加入有机硅消泡剂、低速搅拌、过滤、检验、包装、即得面漆成品。
实施例三
封闭底漆
配方:
原料名称              质量分数
有机硅-丙烯乳液        12
硅溶胶                 28
有机硅乳液             18
有机硅消泡剂           4
水                     38。
工艺流程
取有机硅-丙烯乳液,硅溶胶,有机硅乳液和水放入胶体磨中混匀,加入有机硅消泡剂,搅拌均匀,备用。
面漆
配方
原材料名称         质量百分数(%)
有机硅-丙烯酸乳液       12
纯丙烯酸乳液            15
硅溶液                  10
乙二醇                  3
硅灰石粉                10 
灰钙粉                  10
金红石型钛白粉          7
立德粉                  10
滑石粉                  4
六偏磷酸钠              2
有机硅消泡剂            2
防霉剂                  0.5
防腐剂                  1.5
余量为水。
工艺流程
取六偏磷酸钠,加入水,搅拌使完全溶解。加入硅灰石粉、灰钙粉、钛白粉、立德粉、滑石粉、防霉剂和防腐剂,在三磙研磨机上研磨至20-30nm.加入有机硅-丙烯酸乳液、纯丙烯酸乳液、硅溶胶和乙二醇,低速搅拌。加入有机硅消泡剂、低速搅拌、过滤、检验、包装、即得面漆成品。
实施例四
封闭底漆
配方:
原料名称              质量分数
有机硅-丙烯乳液        20
硅溶胶                 20
有机硅乳液             20
有机硅消泡剂           6
水                     34。
工艺流程
取有机硅-丙烯乳液,硅溶胶,有机硅乳液和水放入胶体磨中混匀,加入有机硅消泡剂,搅拌均匀,备用。
面漆
配方
原材料名称         质量百分数(%)
有机硅-丙烯酸乳液       10
纯丙烯酸乳液            10
硅溶液                  15
乙二醇                  5
硅灰石粉                15
灰钙粉                  3
金红石型钛白粉          6
立德粉                  6
滑石粉                  6
六偏磷酸钠              5
有机硅消泡剂            1
防霉剂                  1
防腐剂                  0.5
余量为水。
工艺流程
取六偏磷酸钠,加入水,搅拌使完全溶解。加入硅灰石粉、灰钙粉、钛白粉、立德粉、滑石粉、防霉剂和防腐剂,在三磙研磨机上研磨至20-30nm.加入有机硅-丙烯酸乳液、纯丙烯酸乳液、硅溶胶和乙二醇,低速搅拌。加入有机硅消泡剂、低速搅拌、过滤、检验、包装、即得面漆成品。 

Claims (8)

1.一种混凝土墙面专用防潮防泛碱漆,有封闭底漆和面漆两部分组成。
2.权利要求书1中的封闭底漆的每部分原料组成质量百分比为:
原材料名称           (100%)
有机硅-丙烯乳液        10-40
硅溶胶                 5-30
有机硅乳液             4-20
有机硅消泡剂           0.1-6
水                     5-40
上述所有组分之和等于100%。
3.权利要求书2中的封闭底漆的每部分原料组成质量百分比为:
原材料名称           (100%)
有机硅-丙烯乳液        30
硅溶胶                 19
有机硅乳液             11
有机硅消泡剂           2
水                     38。
4.权利要求书2或3中各原料组分的加入顺序及操作方法为:取有机硅-丙烯乳液,硅溶胶,有机硅乳液和水按比例加入胶体磨中混匀,加入有机硅消泡剂,搅拌均匀,备用。
5.权利要求书1中面漆的每部分原料组成质量百分比为:
原材料名称            质量百分数(100%)
有机硅-丙烯酸乳液       10-30
纯丙烯酸乳液            10-40
硅溶液                  5-20
乙二醇                  1-10
硅灰石粉                5-20 
灰钙粉                  3-15
金红石型钛白粉           6-15
立德粉                   5-12
滑石粉                   4-16
六偏磷酸钠               2-8
有机硅消泡剂             1-5
防霉剂                   0.5-4
防腐剂                   0.5-5
余量为水
上述所有组分之和等于100%。
6.权利要求书5中面漆的每部分原料组成质量百分比为:
原材料名称            质量百分数(100%)
有机硅-丙烯酸乳液       12
纯丙烯酸乳液            15
硅溶液                  10
乙二醇                  3
硅灰石粉                10 
灰钙粉                  10
金红石型钛白粉          7
立德粉                  10
滑石粉                  4
六偏磷酸钠              2
有机硅消泡剂            2
防霉剂                  0.5
防腐剂                  1.5
余量为水。
7.权利要求书5中面漆的每部分原料组成质量百分比为:
原材料名称            质量百分数(100%)
有机硅-丙烯酸乳液       10
纯丙烯酸乳液            10
硅溶液                  15
乙二醇                  5
硅灰石粉                15
灰钙粉                  3
金红石型钛白粉          6
立德粉                  6
滑石粉                  6
六偏磷酸钠              5
有机硅消泡剂            1
防霉剂                  1
防腐剂                  0.5
余量为水。
8.权利要求书5或6或7中各原料组分的加入顺序及操作方法:取六偏磷酸钠,加入水,搅拌使其完全溶解;加入硅灰石粉、灰钙粉、钛白粉、立德粉、滑石粉、防霉剂和防腐剂,在三磙研磨机上研磨至20-30nm;加入有机硅-丙烯酸乳液、纯丙烯酸乳液、硅溶胶和乙二醇,低速搅拌;加入有机硅消泡剂、低速搅拌、过滤、检验、包装、即得面漆成品。
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CN105713471A (zh) * 2016-03-16 2016-06-29 陈威 一种水性无机建筑封闭抗碱底漆的配方和制作技术
CN114956626A (zh) * 2022-06-23 2022-08-30 北京交通大学 一种赤泥和ⅱ级粉煤灰地聚合物及其制备方法

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CN114956626A (zh) * 2022-06-23 2022-08-30 北京交通大学 一种赤泥和ⅱ级粉煤灰地聚合物及其制备方法

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