CN114057964A - 一种建筑节能保温隔热材料及其制备方法和应用 - Google Patents
一种建筑节能保温隔热材料及其制备方法和应用 Download PDFInfo
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Abstract
本发明提出了一种建筑节能保温隔热材料及其制备方法和应用,属于建筑材料技术领域。将膨胀蛭石和闭孔珍珠岩混合粉碎后,经过带有双键的硅烷偶联剂改性后,与聚苯乙烯发生加成反应键连,加入异丙醇铝的水溶液中,发生溶胶凝胶反应,得到建筑节能保温隔热材料。本发明制得建筑节能保温隔热材料,不仅具有极低的导热系数、且阻燃效果好,隔音效果佳,制得的材料力学性能好,可用于保温隔热涂料、保温隔热板材、保温隔热墙体的制备中,能节约大量的能量资源,而且还能大大降低因能源燃烧产物对环境的破坏程度,特别是能减轻CO2,SO2,NOx和TSP对大气的污染,具有广阔的应用前景。
Description
技术领域
本发明涉及建筑材料技术领域,具体涉及一种建筑节能保温隔热材料及其制备方法和应用。
背景技术
近年来,随着经济的发展及全球人口数量的增长,能源问题成为制约着社会发展的重要因素之一。提倡“节能、低碳、环保”的生活理念是解决这一问题的重要途径之一,这一生活理念是调整经济结构、转变经济发展方式的内在要求,也是推动节能减排,发展绿色经济和循环经济的战略选择。我国拥有目前世界上最大的建筑市场,建筑耗能也成为各类耗能之首,如何减少建筑物耗能是当前业界亟待解决的问题。
实现建筑节能的一个有效方法就是采用保温隔热材料与制品。目前建筑保温材料主要有无机类和有机类,无机保温材料是一种用于建筑物内外墙粉刷的保温节能材料,主要有空玻化微珠,膨胀珍珠岩,闭孔珍珠岩,岩棉,发泡混凝土等,具有防火防冻、耐老化以及低廉的价格等特点,但保温热效率差。有机保温材料主要是发泡塑料,主要产品为聚苯乙烯泡沫塑料、酚醛泡棉和聚氨酯泡沫塑料,主要缺点是易燃、易滴熔,燃烧烟雾大、毒性大,燃烧能产生氰化氢气体,一旦发生火灾对人体毒害性极大,且保温效果不好等缺点。
因此,有必要寻求更为有效的方法,制备防火性能好、保温隔热性强、利用价值高、稳定性强、低成本且环保的建筑节能保温隔热材料。
发明内容
本发明的目的在于提出一种建筑节能保温隔热材料及其制备方法和应用,不仅具有极低的导热系数、且阻燃效果好,隔音效果佳,制得的材料力学性能好,可用于保温隔热涂料、保温隔热板材、保温隔热墙体的制备中,能节约大量的能量资源,而且还能大大降低因能源燃烧产物对环境的破坏程度,特别是能减轻CO2,SO2,NOx和TSP对大气的污染,具有广阔的应用前景。
本发明的技术方案是这样实现的:
本发明提供一种建筑节能保温隔热材料的制备方法,将膨胀蛭石和闭孔珍珠岩混合粉碎后,经过带有双键的硅烷偶联剂改性后,与聚苯乙烯发生加成反应键连,加入异丙醇铝的水溶液中,发生溶胶凝胶反应,得到建筑节能保温隔热材料。
作为本发明的进一步改进,具体包括以下步骤:
S1.保温隔热粉的制备:将膨胀蛭石和闭孔珍珠岩粉碎后研细,混合均匀,得到保温隔热粉;
S2.改性保温隔热粉:将步骤S1制得的保温隔热粉加入含有带有双键的硅烷偶联剂的乙醇溶液中,加热至75-90℃,反应2-4h,过滤,洗涤,干燥,得到改性保温隔热粉;
S3.聚苯乙烯-改性保温隔热粉的制备:将聚苯乙烯溶于乙酸乙酯中,加入步骤S2得到的改性保温隔热粉,分散均匀后,加入引发剂,紫外线辐照反应1-2h后,减压除去乙酸乙酯,干燥,粉碎,得到聚苯乙烯-改性保温隔热粉;
S4.建筑节能保温隔热材料的制备:将步骤S3制得的聚苯乙烯-改性保温隔热粉加入异丙醇铝的水溶液中,搅拌混合均匀,加热至70-90℃,反应0.5-1h,加入硝酸调节pH值为5-6,反应2-4h,静置陈化3-5h,真空干燥,粉碎,得到建筑节能保温隔热材料。
作为本发明的进一步改进,步骤S1中所述膨胀蛭石和闭孔珍珠岩的质量比为10:(3-5);所述研细至粉末粒径在10-100μm之间。
作为本发明的进一步改进,步骤S2中所述带有双键的硅烷偶联剂选自KH570、A171、A172、A151中的至少一种;所述洗涤为依次用去离子水、乙醇洗涤。
作为本发明的进一步改进,所述引发剂选自过氧化苯甲酰、过氧化月桂酰、异丙苯过氧化氢、叔丁基过氧化氢、过氧化二叔丁基、过氧化二异丙苯、过氧化苯甲酸叔丁酯、过氧化叔戊酸叔丁基酯、过氧化甲乙酮、过氧化环己酮、过氧化二碳酸二异丙酯、过氧化二碳酸二环己酯、过硫酸钾、过硫酸钠、过硫酸铵、偶氮二异丁腈、偶氮二异庚腈、偶氮二异丁酸二甲酯中的至少一种。
作为本发明的进一步改进,步骤S3中所述聚苯乙烯、改性保温隔热粉和引发剂的质量比为100:(30-70):(1-2)。
作为本发明的进一步改进,步骤S4中所述异丙醇铝的水溶液的质量分数为25-30wt%;所述硝酸的物质的量浓度为0.5-2mol/L。
作为本发明的进一步改进,步骤S4中所述聚苯乙烯-改性保温隔热粉与异丙醇铝的水溶液的质量体积比为1:(2-4)g/mL。
本发明进一步保护一种上述的制备方法制得的建筑节能保温隔热材料。
本发明进一步保护一种上述建筑节能保温隔热材料在保温隔热涂料、保温隔热板材、保温隔热墙体中的应用。
本发明具有如下有益效果:本发明将膨胀蛭石和闭孔珍珠岩进行混合复配,闭孔珍珠岩为珍珠岩膨胀烧结后,呈玻化球形且内部为封闭的空心结构,通过精确控制加热温度和时间,使矿砂在短时内迅速膨胀内部形成蜂窝状结构,浅表熔融并形成封闭气孔,表面玻化形成的微圆球状颗粒,闭孔珍珠岩具有吸水率低、强度高、隔热效果好、环保、无污染、吸声隔音、保温不燃、轻质多孔、流散性好、耐压强度高等优点,膨胀蛭石是蛭石经膨胀工艺后的产物,膨胀后的蛭石层片间有空气间隔层,起到隔热作用,两者复配后的粉料不仅具有极好的保温、隔热、不燃等特点,同时还具有隔音、吸水率低等优点,通过带有双键的硅烷偶联剂改性后,在粉料表面形成大量带有双键的基团,进一步与聚苯乙烯发生加成反应,使得聚苯乙烯和无机隔热材料保温隔热粉键连,进一步提高了材料的隔热效果;
然后,将聚苯乙烯-改性保温隔热粉加入异丙醇铝溶液中,在酸性条件下发生溶胶凝胶反应,异丙醇铝发生水解反应制得表观可见的大孔结构的氢氧化铝,真空干燥后,形成类似蜂窝状的多孔水凝胶干粉,制得建筑节能保温隔热材料,不仅具有极低的导热系数、且阻燃效果好,隔音效果佳,制得的材料力学性能好,可用于保温隔热涂料、保温隔热板材、保温隔热墙体的制备中,能节约大量的能量资源,而且还能大大降低因能源燃烧产物对环境的破坏程度,特别是能减轻CO2,SO2,NOx和TSP对大气的污染,具有广阔的应用前景。
具体实施方式
下面将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,都属于本发明保护的范围。
实施例1
本实施例提供一种建筑节能保温隔热材料的制备方法,具体包括以下步骤:
S1.保温隔热粉的制备:将10g膨胀蛭石和3g闭孔珍珠岩粉碎后研细,混合均匀,过筛,得到保温隔热粉,粉末粒径在10-100μm之间;
S2.改性保温隔热粉:将步骤S1制得的保温隔热粉加入含有带有双键的硅烷偶联剂的乙醇溶液(带有双键的硅烷偶联剂的质量分数为5wt%,乙醇的质量分数为35wt%)中,加热至75℃,反应2h,过滤,依次用去离子水、乙醇洗涤,干燥,得到改性保温隔热粉;
S3.聚苯乙烯-改性保温隔热粉的制备:将10g聚苯乙烯溶于50mL乙酸乙酯中,加入3g步骤S2得到的改性保温隔热粉,分散均匀后,加入0.1g偶氮二异丁酸二甲酯,紫外线辐照反应1h后,减压除去乙酸乙酯,干燥,粉碎,得到聚苯乙烯-改性保温隔热粉;
S4.建筑节能保温隔热材料的制备:将10g步骤S3制得的聚苯乙烯-改性保温隔热粉加入20mL 25wt%异丙醇铝的水溶液中,搅拌混合均匀,加热至70℃,反应0.5h,加入0.5mol/L硝酸调节pH值为5,反应2h,静置陈化3h,真空干燥,粉碎,得到建筑节能保温隔热材料。
实施例2
本实施例提供一种建筑节能保温隔热材料的制备方法,具体包括以下步骤:
S1.保温隔热粉的制备:将10g膨胀蛭石和5g闭孔珍珠岩粉碎后研细,混合均匀,过筛,得到保温隔热粉,粉末粒径在10-100μm之间;
S2.改性保温隔热粉:将步骤S1制得的保温隔热粉加入含有带有双键的硅烷偶联剂的乙醇溶液(带有双键的硅烷偶联剂的质量分数为5wt%,乙醇的质量分数为35wt%)中,加热至90℃,反应4h,过滤,依次用去离子水、乙醇洗涤,干燥,得到改性保温隔热粉;
S3.聚苯乙烯-改性保温隔热粉的制备:将10g聚苯乙烯溶于50mL乙酸乙酯中,加入7g步骤S2得到的改性保温隔热粉,分散均匀后,加入0.2g过硫酸钾,紫外线辐照反应2h后,减压除去乙酸乙酯,干燥,粉碎,得到聚苯乙烯-改性保温隔热粉;
S4.建筑节能保温隔热材料的制备:将10g步骤S3制得的聚苯乙烯-改性保温隔热粉加入40mL 30wt%异丙醇铝的水溶液中,搅拌混合均匀,加热至90℃,反应1h,加入2mol/L硝酸调节pH值为6,反应4h,静置陈化5h,真空干燥,粉碎,得到建筑节能保温隔热材料。
实施例3
本实施例提供一种建筑节能保温隔热材料的制备方法,具体包括以下步骤:
S1.保温隔热粉的制备:将10g膨胀蛭石和4g闭孔珍珠岩粉碎后研细,混合均匀,过筛,得到保温隔热粉,粉末粒径在10-100μm之间;
S2.改性保温隔热粉:将步骤S1制得的保温隔热粉加入含有带有双键的硅烷偶联剂的乙醇溶液(带有双键的硅烷偶联剂的质量分数为5wt%,乙醇的质量分数为35wt%)中,加热至85℃,反应3h,过滤,依次用去离子水、乙醇洗涤,干燥,得到改性保温隔热粉;
S3.聚苯乙烯-改性保温隔热粉的制备:将10g聚苯乙烯溶于50mL乙酸乙酯中,加入5g步骤S2得到的改性保温隔热粉,分散均匀后,加入0.15g过氧化甲乙酮,紫外线辐照反应1.5h后,减压除去乙酸乙酯,干燥,粉碎,得到聚苯乙烯-改性保温隔热粉;
S4.建筑节能保温隔热材料的制备:将10g步骤S3制得的聚苯乙烯-改性保温隔热粉加入30mL 27wt%异丙醇铝的水溶液中,搅拌混合均匀,加热至80℃,反应1h,加入1mol/L硝酸调节pH值为5.5,反应3h,静置陈化4h,真空干燥,粉碎,得到建筑节能保温隔热材料。
对比例1
与实施例3相比,保温隔热粉只包含膨胀蛭石,其他条件均不改变。
S1.保温隔热粉的制备:将14g膨胀蛭石粉碎后研细,混合均匀,过筛,得到保温隔热粉,粉末粒径在10-100μm之间。
对比例2
与实施例3相比,保温隔热粉只包含闭孔珍珠岩,其他条件均不改变。
S1.保温隔热粉的制备:将14g闭孔珍珠岩粉碎后研细,混合均匀,过筛,得到保温隔热粉,粉末粒径在10-100μm之间。
对比例3
与实施例3相比,未经过步骤S3,其他条件均不改变。
本实施例提供一种建筑节能保温隔热材料的制备方法,具体包括以下步骤:
S1.保温隔热粉的制备:将10g膨胀蛭石和4g闭孔珍珠岩粉碎后研细,混合均匀,过筛,得到保温隔热粉,粉末粒径在10-100μm之间;
S2.改性保温隔热粉:将步骤S1制得的保温隔热粉加入含有带有双键的硅烷偶联剂的乙醇溶液(带有双键的硅烷偶联剂的质量分数为5wt%,乙醇的质量分数为35wt%)中,加热至85℃,反应3h,过滤,依次用去离子水、乙醇洗涤,干燥,得到改性保温隔热粉;
S4.建筑节能保温隔热材料的制备:将10g步骤S2制得的改性保温隔热粉加入30mL27wt%异丙醇铝的水溶液中,搅拌混合均匀,加热至80℃,反应1h,加入1mol/L硝酸调节pH值为5.5,反应3h,静置陈化4h,真空干燥,粉碎,得到建筑节能保温隔热材料。
对比例4
与实施例3相比,未经过步骤S4,其他条件均不改变。
本实施例提供一种建筑节能保温隔热材料的制备方法,具体包括以下步骤:
S1.保温隔热粉的制备:将10g膨胀蛭石和4g闭孔珍珠岩粉碎后研细,混合均匀,过筛,得到保温隔热粉,粉末粒径在10-100μm之间;
S2.改性保温隔热粉:将步骤S1制得的保温隔热粉加入含有带有双键的硅烷偶联剂的乙醇溶液(带有双键的硅烷偶联剂的质量分数为5wt%,乙醇的质量分数为35wt%)中,加热至85℃,反应3h,过滤,依次用去离子水、乙醇洗涤,干燥,得到改性保温隔热粉;
S3.聚苯乙烯-改性保温隔热粉的制备:将10g聚苯乙烯溶于50mL乙酸乙酯中,加入5g步骤S2得到的改性保温隔热粉,分散均匀后,加入0.15g过氧化甲乙酮,紫外线辐照反应1.5h后,减压除去乙酸乙酯,干燥,粉碎,得到聚苯乙烯-改性保温隔热粉。
测试例1
将本发明实施例1-3和对比例1-4制得的建筑节能保温隔热材料进行性能测试,结果见表1。
表1
由上表可知,本发明制得的建筑节能保温隔热材料具有良好的力学性能,较好的保温隔热性能以及极好的耐火、阻燃性能。
对比例1、对比例2与实施例3相比,保温隔热粉只包含膨胀蛭石或闭孔珍珠岩,其力学性能和保温性能明显下降,闭孔珍珠岩为珍珠岩膨胀烧结后,呈玻化球形且内部为封闭的空心结构,通过精确控制加热温度和时间,使矿砂在短时内迅速膨胀内部形成蜂窝状结构,浅表熔融并形成封闭气孔,表面玻化形成的微圆球状颗粒,闭孔珍珠岩具有吸水率低、强度高、隔热效果好、环保、无污染、吸声隔音、保温不燃、轻质多孔、流散性好、耐压强度高等优点,膨胀蛭石是蛭石经膨胀工艺后的产物,膨胀后的蛭石层片间有空气间隔层,起到隔热作用,两者复配后的粉料不仅具有极好的保温、隔热、不燃等特点,同时还具有隔音、吸水率低等优点,两者的添加具有协同增效的效果。
对比例3与实施例3相比,未经过步骤S3,体系中未添加聚苯乙烯,保温性能明显下降,改性保温隔热粉通过带有双键的硅烷偶联剂改性后,在粉料表面形成大量带有双键的基团,进一步与聚苯乙烯发生加成反应,使得聚苯乙烯和无机隔热材料保温隔热粉键连,进一步提高了材料的隔热效果
对比例4与实施例3相比,未经过步骤S4,体系中没有形成多孔氢氧化铝干凝胶,保温性能和耐火性能明显下降,将聚苯乙烯-改性保温隔热粉加入异丙醇铝溶液中,在酸性条件下发生溶胶凝胶反应,异丙醇铝发生水解反应制得表观可见的大孔结构的氢氧化铝,真空干燥后,形成类似蜂窝状的多孔水凝胶干粉,制得建筑节能保温隔热材料,不仅具有极低的导热系数、且阻燃效果好,隔音效果佳。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (10)
1.一种建筑节能保温隔热材料的制备方法,其特征在于,将膨胀蛭石和闭孔珍珠岩混合粉碎后,经过带有双键的硅烷偶联剂改性后,与聚苯乙烯发生加成反应键连,加入异丙醇铝的水溶液中,发生溶胶凝胶反应,得到建筑节能保温隔热材料。
2.根据权利要求1所述的制备方法,其特征在于,具体包括以下步骤:
S1.保温隔热粉的制备:将膨胀蛭石和闭孔珍珠岩粉碎后研细,混合均匀,得到保温隔热粉;
S2.改性保温隔热粉:将步骤S1制得的保温隔热粉加入含有带有双键的硅烷偶联剂的乙醇溶液中,加热至75-90℃,反应2-4h,过滤,洗涤,干燥,得到改性保温隔热粉;
S3.聚苯乙烯-改性保温隔热粉的制备:将聚苯乙烯溶于乙酸乙酯中,加入步骤S2得到的改性保温隔热粉,分散均匀后,加入引发剂,紫外线辐照反应1-2h后,减压除去乙酸乙酯,干燥,粉碎,得到聚苯乙烯-改性保温隔热粉;
S4.建筑节能保温隔热材料的制备:将步骤S3制得的聚苯乙烯-改性保温隔热粉加入异丙醇铝的水溶液中,搅拌混合均匀,加热至70-90℃,反应0.5-1h,加入硝酸调节pH值为5-6,反应2-4h,静置陈化3-5h,真空干燥,粉碎,得到建筑节能保温隔热材料。
3.根据权利要求2所述的制备方法,其特征在于,步骤S1中所述膨胀蛭石和闭孔珍珠岩的质量比为10:(3-5);所述研细至粉末粒径在10-100μm之间。
4.根据权利要求2所述的制备方法,其特征在于,步骤S2中所述带有双键的硅烷偶联剂选自KH570、A171、A172、A151中的至少一种;所述洗涤为依次用去离子水、乙醇洗涤。
5.根据权利要求2所述的制备方法,其特征在于,所述引发剂选自过氧化苯甲酰、过氧化月桂酰、异丙苯过氧化氢、叔丁基过氧化氢、过氧化二叔丁基、过氧化二异丙苯、过氧化苯甲酸叔丁酯、过氧化叔戊酸叔丁基酯、过氧化甲乙酮、过氧化环己酮、过氧化二碳酸二异丙酯、过氧化二碳酸二环己酯、过硫酸钾、过硫酸钠、过硫酸铵、偶氮二异丁腈、偶氮二异庚腈、偶氮二异丁酸二甲酯中的至少一种。
6.根据权利要求2所述的制备方法,其特征在于,步骤S3中所述聚苯乙烯、改性保温隔热粉和引发剂的质量比为100:(30-70):(1-2)。
7.根据权利要求2所述的制备方法,其特征在于,步骤S4中所述异丙醇铝的水溶液的质量分数为25-30wt%;所述硝酸的物质的量浓度为0.5-2mol/L。
8.根据权利要求2所述的制备方法,其特征在于,步骤S4中所述聚苯乙烯-改性保温隔热粉与异丙醇铝的水溶液的质量体积比为1:(2-4)g/mL。
9.一种如权利要求1-8任一项所述的制备方法制得的建筑节能保温隔热材料。
10.一种如权利要求9所述建筑节能保温隔热材料在保温隔热涂料、保温隔热板材、保温隔热墙体中的应用。
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