CN106565276A - 一种增强型发泡水泥板及其制备方法 - Google Patents
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Abstract
本发明涉及一种利用聚合物乳液增强的发泡水泥板及其制备方法。其特征在于采用聚合物乳液浸渍预先制备好的发泡水泥板，待发泡水泥板被乳液完全浸透后取出，去除多余乳液，自然干燥使聚合物硬化，得到增强的发泡水泥板。所述聚合物乳液可以聚氨酯乳液、硅丙乳液、苯丙乳液、环氧乳液、丙烯酸乳液、有机硅乳液等。增强后的发泡水泥板各项强度明显提高，保温、防水和阻燃效果良好，可广泛应用于建筑墙体的保温节能降耗。
Description
技术领域
本发明涉及一种增强的发泡水泥板及其制备方法，具体涉及一种可用于建筑墙体保温，利用聚合物乳液浸渍增强的发泡水泥板及其制备方法。
背景技术
发泡水泥是一种含有大量封闭气孔的新型轻质保温材料，具有较好的隔热、保温、阻燃性能，但是发泡水泥导热系数相对较高，脆性较大，强度较低，吸水率较高，长期使用时存在空鼓、开裂、破碎甚至脱落风险，严重限制了其在墙体保温领域的推广应用；有机高分子聚合物则普遍具有韧性好，导热系数低等特点。在当前形势下，如何综合利用有机和无机材料的优点制备高强度、低导热系数、防水、阻燃的有机/无机复合材料是未来保温建材发展的重要方向。本发明利用聚合物乳液，通过浸渍、干燥工艺改善发泡水泥的强度和防水性能，获得了可用于建筑墙体保温的增强型发泡水泥板。
发明内容
本发明的目的在于提供一种可用于建筑墙体保温的增强型发泡水泥板及其制备方法，利用聚合物乳液的特性，通过浸渍、干燥、硬化成膜的方式对预先制备的发泡水泥起增韧、增强作用，改善发泡水泥的防水、抗裂、抗弯、抗折、抗压和抗冲击性能。
所述聚合物乳液可以是聚氨酯乳液、硅丙乳液、苯丙乳液、环氧乳液、丙烯酸乳液、有机硅乳液等与发泡水泥相容性好，有增强、防水作用的乳液。
所述发泡水泥可以是硅酸盐水泥、菱镁水泥、硫铝酸盐水泥、铁铝酸盐水泥、高铝水泥等或硅酸盐水泥、菱镁水泥、硫铝酸盐水泥、铁铝酸盐水泥、高铝水泥等与粉煤灰、矿渣、硅灰粉等各种添加料的组合。
所述增强发泡水泥板的制备过程包括以下步骤：利用聚合物乳液浸渍预先制备好的发泡水泥板，待发泡水泥板被乳液完全浸透后取出，去除多余乳液，自然干燥使聚合物硬化，得到增强的发泡水泥板。
与常规发泡水泥板相比，本发明具有以下优点：发泡水泥板经聚合物乳液浸渍后，聚合物分子渗透至水泥泡孔的内部并硬化成致密的防水膜，改善了泡孔的脆性，使发泡水泥板具有很高的强度与韧性，提高了抗裂、抗弯、抗折、抗压和抗冲击性能，制备过程简单，保温、防水和阻燃效果良好，可作为保温板、隔墙板、保温装饰一体板、夹心复合板、集成式住宅材料等适用但不局限于建筑墙体保温隔热领域。
附图说明
为了更清楚地说明本实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍。对于本领域技术人员而言，在不付出创造性劳动的前提下，还可以根据此附图获得其他附图。
图1是聚合物增强发泡水泥板微观结构示意图。
具体实施方式
下面结合附图对本发明作详细说明，实施例在以本发明技术方案为前提下进行实施，给出了详细的实施方式和具体的操作过程，但本发明的保护范围不仅限于下述实施例。
一种聚合物乳液增强发泡水泥板的制备过程包括以下步骤：利用聚合物乳液浸渍预先制备好的发泡水泥板，待发泡水泥板被乳液完全浸透后取出，去除多余乳液，自然干燥使聚合物硬化，得到增强的发泡水泥板。
所述聚合物乳液可以是聚氨酯乳液、硅丙乳液、苯丙乳液、环氧乳液、丙烯酸乳液、有机硅乳液等与发泡水泥相容性好，有增强、防水作用的乳液。
所述发泡水泥可以是硅酸盐水泥、菱镁水泥、硫铝酸盐水泥、铁铝酸盐水泥、高铝水泥等或硅酸盐水泥、菱镁水泥、硫铝酸盐水泥、铁铝酸盐水泥、高铝水泥等与粉煤灰、矿渣、硅灰粉等各种添加料的组合。
所述发泡水泥板是以物理法将水泥及其他无机材料、外加剂加水搅拌成匀质浆体，随后将发泡机生产的泡沫与浆体搅匀，浇入模具，硬化后切割即成；或以化学法将水泥及其他无机材料、外加剂等，加水搅拌为浆体，再加入适量的过氧化氢迅速搅拌后浇筑到模具中，硬化后切割即成。也可以采用物理发泡和化学发泡相结合的方法，即将水泥及其他无机材料、外加剂加水搅拌为浆体，随后将发泡机生产的泡沫与浆体搅拌均匀，再加入适量的过氧化氢迅速搅拌后浇筑到模具中，硬化后切割即成。采用上述任意一种发泡方法时可以再加入聚苯颗粒、膨胀珍珠岩，进一步降低干密度和导热系数。
为提高聚合物乳液的渗透性，可将预先制备好的发泡水泥板打孔处理，孔洞穿透整个发泡水泥板，孔直径<2mm。
以上所述仅为本发明例举的实施例，并非因此限制本专利范围，凡利用本发明说明书及附图内容所作的等效结构、流程、工艺之变换，直接或间接运用在其他相关技术领域，均同理包括在本发明的专利保护范围内。
Claims (5)
1.本发明涉及一种利用聚合物乳液增强的发泡水泥板及其制备方法，其特征在于采用聚合物乳液浸渍预先制备好的发泡水泥板，待发泡水泥板被乳液完全浸透后取出，去除多余乳液，自然干燥使聚合物硬化，得到增强的发泡水泥板。
2.如权利要求1中所述聚合物乳液可以是聚氨酯乳液、硅丙乳液、苯丙乳液、环氧乳液、丙烯酸乳液、有机硅乳液等与发泡水泥相容性好，有增强、防水作用的乳液。
3.如权利要求1中所述发泡水泥可以是硅酸盐水泥、菱镁水泥、硫铝酸盐水泥、铁铝酸盐水泥、高铝水泥等或硅酸盐水泥、菱镁水泥、硫铝酸盐水泥、铁铝酸盐水泥、高铝水泥等与粉煤灰、矿渣、硅灰粉等各种添加料的组合。
4.如权利要求1所述的增强发泡水泥保温板经聚合物乳液浸渍后，聚合物分子渗透至水泥泡孔的内部并硬化成致密的防水膜，改善了泡孔的硬脆性，使发泡水泥板具有很高的强度与韧性，提高了抗裂、抗弯、抗折、抗压和抗冲击性能，制备过程简单，保温、防水和阻燃效果良好。
5.如权利要求1-4所述的增强发泡水泥板作为保温板、隔墙板、保温装饰一体板、夹心复合板、集成式住宅材料等适用但不局限于在建筑墙体保温隔热领域中的应用。
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| CN113307557A (zh) * | 2021-07-07 | 2021-08-27 | 江苏万维新材料有限公司 | 一种复合发泡水泥板及其制备方法和装置 |
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