CN110386796A - 一种a级保温板原料、a级保温板及制备方法 - Google Patents
一种a级保温板原料、a级保温板及制备方法 Download PDFInfo
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- 235000013539 calcium stearate Nutrition 0.000 claims description 6
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- SHFGJEQAOUMGJM-UHFFFAOYSA-N dialuminum dipotassium disodium dioxosilane iron(3+) oxocalcium oxomagnesium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Na+].[Na+].[Al+3].[Al+3].[K+].[K+].[Fe+3].[Fe+3].O=[Mg].O=[Ca].O=[Si]=O SHFGJEQAOUMGJM-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开了一种A级保温板原料、保温板及其制备方法,原料按质量份数计,由以下组分组成:普通硅酸盐水泥3~10份,快硬硫铝酸盐水泥45~65份,减水剂0.1~0.2份,改性膨胀珍珠岩10~30份,发泡剂2~5份,稳泡剂1~2份,纤维0.1~0.3份。本发明的优点是该保温板具有较低导热系数、容重可调、具备A级耐火性能,具有无机膨胀珍珠岩保温板和发泡水泥保温板各自的优点并且克服各自的缺陷。
Description
技术领域
本发明属于建筑保温板技术领域,尤其涉及一种A级保温板原料、A级保温板及制备方法。
背景技术
近年来,随着我国对保温墙体材料防火问题的重视和关注,具有优异防火性能的无机保温墙体材料越来越受到青睐。其中以膨胀珍珠岩为保温骨料的无机轻集料保温板因具有阻燃性能优异、物化性能稳定、生命周期长、绿色环保等优点,目前已成为墙体保温材料发展的主要方向之一。现有技术中,无机膨胀珍珠岩保温板一般采用水玻璃或水泥作为胶结材通过压制成型工艺制备,缺点是无机膨胀珍珠岩保温板存在导热系数高(一般约在0.06~0.07之间),容重大、憎水性及耐候性差等缺点。与此类似,发泡水泥保温板是另一种阻燃性能优异的无机保温板,因其结构多孔特征从而具有导热系数低、容重小等优点,但同时存在干缩值较大、吸水率较高及裂缝多等缺点。
发明内容
1.要解决的问题
针对现有以膨胀珍珠岩为保温骨料的无机轻集料保温板容重大、憎水性及耐候性差等缺点,本发明提供一种具有较低导热系数、容重可调及A级耐火性能的保温原料、保温板及其制备方法,具有无机膨胀珍珠岩保温板和发泡水泥保温板各自的优点并且克服了各自的缺陷。
2.技术方案
为了解决上述问题,本发明所采用的技术方案如下:
一种A级保温板原料,其特点是按质量份数计,由以下组分组成:普通硅酸盐水泥3~10份,快硬硫铝酸盐水泥45~65份,减水剂0.1~0.2份,改性膨胀珍珠岩10~30份,发泡剂2~5份,稳泡剂1~2份,纤维0.1~0.3份。
更进一步地,所述普通硅酸盐水泥、快硬硫铝酸盐水泥的强度等级为42.5或52.5级。
更进一步地,所述减水剂为聚羧酸减水剂,减水率≥25%。
更进一步地,所述改性膨胀珍珠岩经憎水处理,憎水率≥90%。
更进一步地,所述发泡剂为双氧水。
更进一步地,所述稳泡剂为硬脂酸钙。
更进一步地,所述纤维为长度为3~5cm的PP纤维。
一种A级保温板,其特点是由上述A级保温板原料制备,所述A级保温板具有的性能包括:导热系数为0.045~0.055W/(m·K),干密度为150~250kg/m3,抗压强度为0.4~0.8MPa,抗拉强度0.2~0.5MPa,体积吸水率5%~8%;所述A级保温板燃烧性能为不燃A级。
本发明还提供一种A级保温板的制备方法,其特点是使用上述原料进行制备,制备步骤包括:
(1)按配比,将普通硅酸盐水泥、快硬硫铝酸盐水泥、减水剂、发泡剂、稳泡剂和纤维混合均匀;
(2)按照水料比0.4~0.6的比例,加入拌合水;充分搅拌1~3min;
(3)再按配比加入改性膨胀珍珠岩,搅拌5~15s,得到浇注料;
(4)将所述步骤(3)得到的浇注料进行浇筑和养护,得到A级保温板。
更进一步地,所述步骤(4)中养护步骤的养护温度为40±2℃,养护时间为24h。
本发明使用最简单、易得的原料配比设计制备A级保温板,原料有普通硅酸盐水泥、快硬硫铝酸盐水泥、减水剂、改性膨胀珍珠岩、发泡剂、稳泡剂、纤维;其中普通硅酸盐水泥所起到的作用胶粘材料;其中纤维为PP纤维,长度为3~5cm,所起到抗裂的作用;改性膨胀珍珠岩是轻骨料,发泡剂用于保温板内气泡的生成,气泡的生成有利于降低保温板的导热系数。
3.有益效果
与现有技术相比,本发明的有益效果为:
(1)本发明采用原料有普通硅酸盐水泥、快硬硫铝酸盐水泥、聚羧酸减水剂、改性膨胀珍珠岩、双氧水、硬脂酸钙、PP纤维,上述原料廉价、易得,节省了保温板的制备成本。
(2)本发明制备的A级保温板兼具无机膨胀珍珠岩保温板和发泡水泥保温板的优点,克服了单独的无机膨胀珍珠岩保温板和发泡水泥保温板的缺点,具有较低导热系数、容重可调。
(3)本发明制备的A级保温板,能够达到《建筑材料及制品燃烧性能分级》(GB8624-2012)规定的不燃A级标准。
具体实施方式
尽管下述示例性实施例被充分详细地描述以使得本领域技术人员能够实施本发明,但应当理解可实现其他实施例且可在不脱离本发明的精神和范围的情况下对本发明作各种改变。下文对本发明的实施例的更详细的描述并不用于限制所要求的本发明的范围,而仅仅为了进行举例说明且不限制对本发明的特点和特征的描述,以提出执行本发明的最佳方式,并足以使得本领域技术人员能够实施本发明。因此,本发明的范围仅由所附权利要求来限定。
实施例1
一种A级保温板,其原料按质量份数计,由以下组分组成:
普通硅酸盐水泥,强度等级为42.5,5~7份;
快硬硫铝酸盐水泥,强度等级为42.5,50~60份;
减水剂,为聚羧酸减水剂,减水率≥25%,0.15份;
改性膨胀珍珠岩,经憎水处理,憎水率≥90%,15~25份;
发泡剂,为双氧水,3~4份;
稳泡剂,为硬脂酸钙,2份;
纤维,长度为3~5cm的PP纤维,0.3份。
将上述原料按照下述步骤进行制备:
(1)按配比,将普通硅酸盐水泥、快硬硫铝酸盐水泥、减水剂、发泡剂、稳泡剂和纤维混合均匀;
(2)按照水料比0.5的比例,加入拌合水;充分搅拌1~3min;
(3)再按配比加入改性膨胀珍珠岩,搅拌5~15s,得到浇注料;
(4)将所述步骤(3)得到的浇注料进行浇筑和养护,养护温度为40±2℃,养护时间为24h,得到A级保温板。
实施例2
一种A级保温板,其原料按质量份数计,由以下组分组成:
普通硅酸盐水泥,强度等级为42.5,6~10份;
快硬硫铝酸盐水泥,强度等级为42.5,55~65份;
减水剂,为聚羧酸减水剂,减水率≥25%,0.2份;
改性膨胀珍珠岩,经憎水处理,憎水率≥90%,20~30份;
发泡剂,为双氧水,4~5份;
稳泡剂,为硬脂酸钙,2份;
纤维,长度为3~5cm的PP纤维,0.2~0.3份。
将上述原料按照下述步骤进行制备:
(1)按配比,将普通硅酸盐水泥、快硬硫铝酸盐水泥、减水剂、发泡剂、稳泡剂和纤维混合均匀;
(2)按照水料比0.5~0.6的比例,加入拌合水;充分搅拌1~3min;
(3)再按配比加入改性膨胀珍珠岩,搅拌5~15s,得到浇注料;
(4)将所述步骤(3)得到的浇注料进行浇筑和养护,养护温度为40±2℃,养护时间为24h,得到A级保温板。
实施例3
一种A级保温板,其原料按质量份数计,由以下组分组成:
普通硅酸盐水泥,强度等级为52.5级,3~5份;
快硬硫铝酸盐水泥,强度等级为52.5级,45~55份;
减水剂,为聚羧酸减水剂,减水率≥25%,0.1~0.2份;
改性膨胀珍珠岩,经憎水处理,憎水率≥90%,10~20份;
发泡剂,为双氧水,2~4份;
稳泡剂,为硬脂酸钙,1份;
纤维,长度为3~5cm的PP纤维,0.1~0.2份。
将上述原料按照下述步骤进行制备:
(1)按配比,将普通硅酸盐水泥、快硬硫铝酸盐水泥、减水剂、发泡剂、稳泡剂和纤维混合均匀;
(2)按照水料比0.6的比例,加入拌合水;充分搅拌1~3min;
(3)再按配比加入改性膨胀珍珠岩,搅拌5~15s,得到浇注料;
(4)将所述步骤(3)得到的浇注料进行浇筑和养护,养护温度为40±2℃,养护时间为24h,得到A级保温板。
分别将实施例1、实施例2、实施例3得到的A级保温板依照《建筑材料及制品燃烧性能分级》(GB8624-2012)进行燃烧性能分级测试,测试结果显示三个实施例的A级保温板具有如下性能:导热系数为0.045~0.055W/(m·K),干密度为150~250kg/m3,抗压强度为0.4~0.8MPa,抗拉强度0.2~0.5MPa,体积吸水率5%~8%;参照标准(GB8624-2012)可知本实施例的A级保温板燃烧性能为不燃A级。
对比例1
现有普通膨胀珍珠岩保温板,其原料按质量份数计,组分包括普通硅酸盐水泥40~60份,膨胀珍珠岩20~40份,减水剂0.1~0.3份,消泡剂1.5份,纤维0.2~0.4份。此种保温板的导热系数为0.058~0.070W/(m·K),吸水率8%~10%,导热系数和吸水率较实施例1至3均偏高。
对比例2
现有的普通发泡水泥保温板,其原料按质量份数计,组分包括普通硅酸盐水泥,20~45份,发泡水泥,15~45份,减水剂0.1~0.2份,消泡剂1份,纤维0.1~0.3份。此种保温板的导热系数为0.056~0.064W/(m·K),抗压度为0.30~0.42MPa。与实施例1至3比较,其导热系数偏高,其抗压强度偏低。
通过对上述实施例1至3与对比例1至2的对比可知,本发明的A级保温板具有简化原料组成,制成的保温板具有较理想的导热系数、干密度、抗压强度、抗拉强度和体积吸水率。具备改性膨胀珍珠岩保温板和发泡水泥保温板各自的优点并克服各自的缺陷,实现了一加一大于一的效果。
以上对本发明做了示例性的描述,应该说明的是,在不脱离本发明的核心的情况下,任何简单的变形、修改或者其他本领域技术人员能够不花费创造性劳动的等同替换,均落入本发明的保护范围。
Claims (10)
1.一种A级保温板原料,其特征在于按质量份数计,由以下组分组成:普通硅酸盐水泥3~10份,快硬硫铝酸盐水泥45~65份,减水剂0.1~0.2份,改性膨胀珍珠岩10~30份,发泡剂2~5份,稳泡剂1~2份,纤维0.1~0.3份。
2.根据权利要求1所述一种A级保温板原料,其特征在于:所述普通硅酸盐水泥、快硬硫铝酸盐水泥的强度等级为42.5或52.5级。
3.根据权利要求1所述一种A级保温原料,其特征在于:所述减水剂为聚羧酸减水剂,减水率≥25%。
4.根据权利要求1所述一种A级保温原料,其特征在于:所述改性膨胀珍珠岩经憎水处理,憎水率≥90%。
5.根据权利要求1所述一种A级保温原料,其特征在于:所述发泡剂为双氧水。
6.根据权利要求1所述一种A级保温原料,其特征在于:所述稳泡剂为硬脂酸钙。
7.根据权利要求1所述一种A级保温原料,其特征在于:所述纤维为长度为3~5cm的PP纤维。
8.一种A级保温板,其特征在于:该保温板由权利要求1至7任一项所述A级保温板原料制备;所述A级保温板具有的性能包括导热系数为0.045~0.055W/(m·K),干密度为150-250kg/m3,抗压强度为0.4~0.8MPa,抗拉强度0.2~0.5MPa,体积吸水率5%~8%。
9.一种A级保温板的制备方法,其特征在于:使用权利要求1至7任一项所述A级保温原料进行制备,制备步骤包括:
(1)按配比,将普通硅酸盐水泥、快硬硫铝酸盐水泥、减水剂、发泡剂、稳泡剂和纤维混合均匀;
(2)按照水料比0.4~0.6的比例,加入拌合水;充分搅拌1~3min;
(3)再按配比加入改性膨胀珍珠岩,搅拌5~15s,得到浇注料;
(4)将所述步骤(3)得到的浇注料进行浇筑和养护,得到A级保温板。
10.根据权利要求9所述一种A级保温板的制备方法,其特征在于:所述步骤(4)中养护步骤的养护温度为40±2℃,养护时间为24h。
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