CN111362655A - 一种gcp石墨改性水泥基保温板 - Google Patents
一种gcp石墨改性水泥基保温板 Download PDFInfo
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- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
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Abstract
本发明公开了一种GCP石墨改性水泥基保温板,包括石墨改性水泥基保温板基体,石墨改性水泥基保温板基体包括如下重量份数原料:用于胶凝的水泥50‑70份;活性矿物6‑12份;增强纤维0.2‑1份;发泡剂3‑8份;纳米级石墨1‑5份;分散剂0.1‑1份;水20‑40份;采用表面增强剂对石墨改性水泥基保温板基体表面进行渗透增强涂覆处理,用于在石墨改性水泥基保温板基体表面形成一层疏水防护薄膜;本发明在保持质轻、导热系数低、耐久性好、防火阻燃等优点的基础上,同时具有优异的表面强度,抗裂性好、吸水率小、耐久性好,而且还具备良好的隔音效果。
Description
技术领域
本发明属于建筑建材领域,具体涉及了一种GCP石墨改性水泥基保温板。
背景技术
随着能源危机的日益加剧,国内越来越重视建筑建材的节能管理,推进建筑建材节能已经成为建设低碳经济、实现节能减排目标,保持社会经济可持续发展的重要发展方向。外墙保温属于节能建筑建材中的一种主要体现形式,现有的外墙保温材料主要包括有机保温材料、无机保温材料和有无机复合保温材料等三大类。
石墨改性水泥基保温板,俗称为碳硅板,主要是以水泥基胶凝材料、活性矿物材料、纤维增强材料、成孔材料、外加剂和水等为主要原料,掺加石墨、调孔材料等改性组份,经搅拌、浇注成型、养护、切割等处理工艺制成的无机复合保温板材。与常用水泥发泡保温板相比,石墨改性水泥基保温板具有质轻、导热系数低、防火阻燃等优点。但是现有的石墨改性水泥基保温板仍然会存在表面强度低、抗裂性较差、吸水率较大以及耐久性较差的缺点。为此,本申请人希望需求技术方案来解决该技术问题。
发明内容
有鉴于此,本发明的目的在于提供一种GCP石墨改性水泥基保温板,在保持质轻、导热系数低、耐久性好、防火阻燃等优点的基础上,同时具有优异的表面强度,抗裂性好、吸水率小、耐久性好,而且还具备良好的隔音效果。
本发明采用的技术方案如下:
一种GCP石墨改性水泥基保温板,包括石墨改性水泥基保温板基体,所述石墨改性水泥基保温板基体包括如下重量份数原料:
其中,采用表面增强剂对所述石墨改性水泥基保温板基体表面进行渗透增强涂覆处理,用于在所述石墨改性水泥基保温板基体表面形成一层疏水防护薄膜。
优选地,所述表面增强剂采用有机硅渗透型防水剂,所述有机硅渗透型防水剂通过涂覆在所述石墨改性水泥基保温板基体表面与空气中的二氧化碳发生自聚合反应,在所述石墨改性水泥基保温板基体表面形成一层具有自清洁效果的疏水硅树脂薄膜。
优选地,所述疏水防护薄膜的厚度范围为10-50微米,所述石墨改性水泥基保温板基体的厚度范围为10-300mm。
优选地,所述水泥采用硫铝酸盐水泥和硅酸盐水泥中的一种或两种的混合。
优选地,所述活性矿物采用矿渣、粉煤灰、磨细天然沸石、石膏、硅灰和偏高岭土中的一种或几种的混合。
优选地,所述石墨改性水泥基保温板基体的原料还包括0.5-1份的纳米级多孔材料和0.1-0.5份的调孔材料。
优选地,所述GCP石墨改性水泥基保温板的制备工艺包括如下操作步骤:
S10)、将水泥、活性矿物、增强纤维、纳米级石墨、分散剂和水全部置于搅拌装置中,通过搅拌装置的旋转搅拌将其原料搅拌均匀;
S20)、向所述搅拌装置中添加发泡剂,搅拌均匀后得到发泡体浆料,将该发泡体浆料通过模具浇筑成型得到石墨改性水泥基保温板胚体;
S30)、对所述石墨改性水泥基保温板胚体依次进行拆模、养护、切割、除尘处理后得到所述石墨改性水泥基保温板基体;
S40)、向所述石墨改性水泥基保温板基体表面喷涂或刷涂有机硅渗透型防水剂,所述有机硅渗透型防水剂与空气中的二氧化碳发生自聚合反应,在所述石墨改性水泥基保温板基体表面形成一层具有自清洁效果的疏水硅树脂薄膜,得到所述GCP石墨改性水泥基保温板。
优选地,在所述步骤S10)前,对增强纤维和纳米级石墨进行纳米增电预复合处理得到纳米增电预复合体,所述纳米增电预复合体用于提高与所述有机硅渗透型防水剂的相容性,提高所述疏水防护薄膜的强度,其中,所述预复合处理的操作步骤包括:
Sa1)、将所述增强纤维预先放置在封闭式容器内,所述封闭式容器将温度加热并保持在40-60℃;
Sa2)、将所述纳米级石墨添加到所述封闭式容器内,同时向所述封闭式容器添加作为增电剂的石墨烯和作为流动助剂的蜡粉,启动高速搅拌,所述高速搅拌的速度不低于800转/分钟,搅拌时间不少于5分钟;
Sa3)、停止高速搅拌和加热,待冷却至室温后出料得到所述纳米增电预复合体。
优选地,所述石墨烯占所述纳米级石墨的重量份比例为1-5%,所述蜡粉占所述纳米级石墨的重量份比例为0.1-0.5%。
需要说明的是,本专利全文涉及的GCP是本申请人生产的GCP石墨改性水泥基保温板产品的产品代号,无特别限定含义。
本发明通过在石墨改性水泥基保温板基体表面采用有机硅渗透型防水剂进行增强处理,有机硅渗透型防水剂通过涂覆在石墨改性水泥基保温板基体表面与空气中的二氧化碳发生自聚合反应,在石墨改性水泥基保温板基体表面形成一层具有自清洁效果的疏水硅树脂薄膜,经检测验证,该疏水硅树脂薄膜可以利于本发明GCP石墨改性水泥基保温板的疏水性,降低其吸水率,重要的是,本发明在保持质轻、导热系数低、耐久性好、防火阻燃等优点的基础上,可以提升GCP石墨改性水泥基保温板表面强度,抗裂性好、耐久性好,同时可以确保与外部砂浆等物料的相容性,,而且还有利于本发明的隔音效果,便于在建筑中进行应用推广。
附图说明
附图1是本发明具体实施方式下GCP石墨改性水泥基保温板的结构示意图;
附图2是本发明具体实施方式下GCP石墨改性水泥基保温板的制备步骤框图;
附图3是本发明具体实施方式下纳米增电预复合体的制备步骤框图。
具体实施方式
本发明实施例公开了一种GCP石墨改性水泥基保温板,包括石墨改性水泥基保温板基体,石墨改性水泥基保温板基体包括如下重量份数原料:
其中,采用表面增强剂对石墨改性水泥基保温板基体表面进行渗透增强涂覆处理,用于在石墨改性水泥基保温板基体表面形成一层疏水防护薄膜。
为了使本技术领域的人员更好地理解本发明中的技术方案,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都应当属于本发明保护的范围。
为了进一步的试验效果验证对比,本申请还具体设定了以下几组具体实施例和比较例:
实施例1:请参见图1所示,一种GCP石墨改性水泥基保温板1,包括石墨改性水泥基保温板基体10,石墨改性水泥基保温板基体10包括如下重量份数原料(总重量份数为100份):
在实际实施时,可以根据实际需要在上述重量份范围内原则各原料之间的配比,这些配比的替换不会影响本申请希望获得的技术效果;
其中,在本实施方式中,采用表面增强剂对石墨改性水泥基保温板基体10表面进行渗透增强涂覆处理,用于在石墨改性水泥基保温板基体10表面形成一层疏水防护薄膜;具体优选地,在本实施方式中,表面增强剂采用有机硅渗透型防水剂,有机硅渗透型防水剂通过涂覆在石墨改性水泥基保温板基体10表面与空气中的二氧化碳发生自聚合反应,在石墨改性水泥基保温板基体10表面形成一层具有自清洁效果的疏水硅树脂薄膜20;疏水硅树脂薄膜20的厚度范围为10-50微米,石墨改性水泥基保温板基体10的厚度范围为10-300mm;
优选地,请进一步参见图2所示,GCP石墨改性水泥基保温板1的制备工艺包括如下操作步骤:
S10)、将水泥、活性矿物、增强纤维、纳米级石墨、分散剂和水全部置于搅拌装置中,通过搅拌装置的旋转搅拌将其原料搅拌均匀;
S20)、向搅拌装置中添加发泡剂,搅拌均匀后得到发泡体浆料,将该发泡体浆料通过模具浇筑成型得到石墨改性水泥基保温板胚体;
S30)、对石墨改性水泥基保温板胚体依次进行拆模、养护、切割、除尘处理后得到石墨改性水泥基保温板基体10;
S40)、向石墨改性水泥基保温板基体10表面喷涂或刷涂有机硅渗透型防水剂,有机硅渗透型防水剂与空气中的二氧化碳发生自聚合反应,在石墨改性水泥基保温板基体10上、下表面均形成一层具有自清洁效果的疏水硅树脂薄膜20,得到GCP石墨改性水泥基保温板1,具体地,在本实施方式中,疏水硅树脂薄膜的厚度为25微米,石墨改性水泥基保温板基体10的厚度为100mm;
本实施例通过在石墨改性水泥基保温板基体10表面采用有机硅渗透型防水剂进行增强处理,有机硅渗透型防水剂通过涂覆在石墨改性水泥基保温板基体10表面与空气中的二氧化碳发生自聚合反应,在石墨改性水泥基保温板基体10表面形成一层具有自清洁效果的疏水硅树脂薄膜,经检测验证,该疏水硅树脂薄膜可以利于本实施例GCP石墨改性水泥基保温板1的疏水性,降低其吸水率,重要的是,本实施例在保持质轻、导热系数低、耐久性好、防火阻燃等优点的基础上,可以提升GCP石墨改性水泥基保温板1表面强度,抗裂性好、耐久性好,同时可以确保与外部砂浆等物料的相容性,,而且还有利于本实施例的隔音效果,便于在建筑中进行应用推广。
实施例2:本实施例2的其余技术方案同实施例1,区别在于,请进一步参见图3所示,在本实施例2中,在步骤S10)前,对增强纤维和纳米级石墨进行纳米增电预复合处理得到纳米增电预复合体,纳米增电预复合体用于提高与有机硅渗透型防水剂的相容性,提高疏水硅树脂薄膜20的强度,其中,预复合处理的操作步骤包括:
Sa1)、将增强纤维预先放置在封闭式容器内,封闭式容器将温度加热并保持在40-60℃;
Sa2)、将纳米级石墨添加到封闭式容器内,同时向封闭式容器添加作为增电剂的石墨烯和作为流动助剂的蜡粉,启动高速搅拌,高速搅拌的速度不低于800转/分钟,搅拌时间不少于5分钟;其中,石墨烯占纳米级石墨的重量份比例为1-5%,蜡粉占纳米级石墨的重量份比例为0.1-0.5%,实际添加量根据实际需求进行选择,本实施例不做特别限定;
Sa3)、停止高速搅拌和加热,待冷却至室温后出料得到纳米增电预复合体。
实施例3:本实施例3的其余技术方案同实施例1,区别在于,在本实施例3中,采用可再分散性乳胶溶液作为表面增强剂涂覆在石墨改性水泥基保温板基体表面。
对比例1:采用实施例1中的石墨改性水泥基保温板基体。
对比例2:采用实施例2中的石墨改性水泥基保温板基体。
请直接参见下表1所示的试验效果验证对比(各相实施效果都是参照建筑行业对其应用建材的性能标准进行测试):
表1:本申请各实施例与对比例的实施效果对比
测试项目 | 单位 | 实施例1 | 实施例2 | 实施例3 | 对比例1 | 对比例2 |
表观密度 | Kg/cm<sup>3</sup> | 160-170 | 160-170 | 160-170 | 160-170 | 160-170 |
抗压强度 | Mpa | 0.66-0.68 | 0.7-0.75 | 0.45-0.55 | 0.45-0.55 | 0.45-0.55 |
吸水率 | % | 5.8-6.5 | 5-5.5 | 5-6.5 | 8-9 | 8-9 |
导热系数 | W(m.K) | 0.042 | 0.04 | 0.55 | 0.65 | 0.045 |
防水等级 | / | A1 | A1 | A1 | A1 | A1 |
通过上表1可明显看出,本申请实施例1和实施例2在保持质轻、导热系数低、耐久性好、防火阻燃等优点的基础上,同时具有优异的表面强度,抗裂性好、吸水率小、耐久性好,而且还具备良好的隔音效果,尤其实施例2在抗压强度和吸水率方面同时具有更加优异的表现;实施例3的抗压强度表现较差
对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。
此外,应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。
Claims (9)
2.根据权利要求1所述的GCP石墨改性水泥基保温板,其特征在于,所述表面增强剂采用有机硅渗透型防水剂,所述有机硅渗透型防水剂通过涂覆在所述石墨改性水泥基保温板基体表面与空气中的二氧化碳发生自聚合反应,在所述石墨改性水泥基保温板基体表面形成一层具有自清洁效果的疏水硅树脂薄膜。
3.根据权利要求1所述的GCP石墨改性水泥基保温板,其特征在于,所述疏水防护薄膜的厚度范围为10-50微米,所述石墨改性水泥基保温板基体的厚度范围为10-300mm。
4.根据权利要求1所述的GCP石墨改性水泥基保温板,其特征在于,所述水泥采用硫铝酸盐水泥和硅酸盐水泥中的一种或两种的混合。
5.根据权利要求1所述的GCP石墨改性水泥基保温板,其特征在于,所述活性矿物采用矿渣、粉煤灰、磨细天然沸石、石膏、硅灰和偏高岭土中的一种或几种的混合。
6.根据权利要求1所述的GCP石墨改性水泥基保温板,其特征在于,所述石墨改性水泥基保温板基体的原料还包括0.5-1份的纳米级多孔材料和0.1-0.5份的调孔材料。
7.根据权利要求2所述的GCP石墨改性水泥基保温板,其特征在于,所述GCP石墨改性水泥基保温板的制备工艺包括如下操作步骤:
S10)、将水泥、活性矿物、增强纤维、纳米级石墨、分散剂和水全部置于搅拌装置中,通过搅拌装置的旋转搅拌将其原料搅拌均匀;
S20)、向所述搅拌装置中添加发泡剂,搅拌均匀后得到发泡体浆料,将该发泡体浆料通过模具浇筑成型得到石墨改性水泥基保温板胚体;
S30)、对所述石墨改性水泥基保温板胚体依次进行拆模、养护、切割、除尘处理后得到所述石墨改性水泥基保温板基体;
S40)、向所述石墨改性水泥基保温板基体表面喷涂或刷涂有机硅渗透型防水剂,所述有机硅渗透型防水剂与空气中的二氧化碳发生自聚合反应,在所述石墨改性水泥基保温板基体表面形成一层具有自清洁效果的疏水硅树脂薄膜,得到所述GCP石墨改性水泥基保温板。
8.根据权利要求7所述的GCP石墨改性水泥基保温板,其特征在于,在所述步骤S10)前,对增强纤维和纳米级石墨进行纳米增电预复合处理得到纳米增电预复合体,所述纳米增电预复合体用于提高与所述有机硅渗透型防水剂的相容性,提高所述疏水防护薄膜的强度,其中,所述预复合处理的操作步骤包括:
Sa1)、将所述增强纤维预先放置在封闭式容器内,所述封闭式容器将温度加热并保持在40-60℃;
Sa2)、将所述纳米级石墨添加到所述封闭式容器内,同时向所述封闭式容器添加作为增电剂的石墨烯和作为流动助剂的蜡粉,启动高速搅拌,所述高速搅拌的速度不低于800转/分钟,搅拌时间不少于5分钟;
Sa3)、停止高速搅拌和加热,待冷却至室温后出料得到所述纳米增电预复合体。
9.根据权利要求8所述的GCP石墨改性水泥基保温板,其特征在于,所述石墨烯占所述纳米级石墨的重量份比例为1-5%,所述蜡粉占所述纳米级石墨的重量份比例为0.1-0.5%。
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