CN106083014A - 发泡石料屋面保温砖的制备方法及其产品 - Google Patents
发泡石料屋面保温砖的制备方法及其产品 Download PDFInfo
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Abstract
本发明涉及一种发泡石料屋面保温砖的制备方法,步骤一、制坯:将珍珠岩、膨润土、沸石、高岭土、凝灰石、黑泥、绿陶瓷硅粉、莹石尾矿、粉煤灰提取氧化铝残渣、煤矸石、短切玄武岩纤维、聚丙烯短切纤维的原料进行混合后,然后破碎、湿法球磨、陈腐均匀,再进行喷雾干燥、造粒、制粉,而后压制成型得到素坯,再对素坯进行烘干得到坯体;步骤二、制釉、施釉:将坯体原料、钠长石、钾长石的原料进行球磨得到釉料,用釉料对所述坯体进行上釉;步骤三、将上釉后的坯体经高温烧制,形成坯体闭口气孔均匀密布带釉面的发泡石料屋面保温砖。本发明技术方案,具有轻质、保温、防火、防水、高强度、耐老化带装饰面的技术效果。
Description
技术领域
本发明涉及一种发泡石料屋面保温砖的制备方法及其产品。
背景技术
建筑物外墙保温系统是节能建筑中很重要的部分,在国内外建筑工程中广泛应用,现有的保温板主要有 EPS板,XPS板,PU板,酚醛板,泡沫混泥土板,岩棉板等。饰面层为带各类涂层的无机板,金属板,石材板和陶瓷板等。饰面采用聚氨酯胶或环氧胶直接粘结在保温层材料上。这类材料主要存在以下的缺点:
1.饰面板不是轻质材料,容重大,无法做到轻量化。
2.保温层采用有机材料,存在耐久性差和防火性能差的问题。采用的无机保温材料存在吸水率高,收缩率大,强度低,使用寿命短等问题。
3.饰面板与保温层材料之间的容重相差十来倍,强度相差几十倍,形成外重内轻,外强内弱的外墙保温系统。虽然通常采用粘锚结合,但锚固件必须锚固于饰面板上,所以其支承结构体系和施工工艺非常复杂。
另外目前普遍采用的保温砂浆外墙保温系统存在4个方面的问题:
1.系统耐久性短,外墙外保温工程设计使用年限为25年,常用的有机类保温材料能否用到25年还有待考验,而无机类保温存在吸水率高,收缩率大,影响实际使用寿命。
2.安全性能让人担忧,目前最常用的外墙保温材料仍然是有机材料,其防火性能差,施工和使用过程中存在防火安全隐患。
3.施工工序复杂,质量隐患多,外墙外保温技术对施工水平要求非常严格,若对其施工方法,技术要求不熟悉,或者工人技术操作水平较低,施工管理不够严格,极易产生严重的质量问题。
4.系统造价高,外墙外保温系统施工工序较多,当采用保温砂浆作为保温层时,一般分三道(甚至更多)抹灰,每道抹灰需在前一道抹灰层硬化后再进行,保温层外需增设置抗裂层,还要设置网格布或钢丝网保护层,最后再做装饰面涂层。
发明内容
针对现有技术存在的不足,本发明的目的在于提供一种轻质、保温、防火、防水、高强度、耐老化带装饰面的发泡石料屋面保温砖的制备方法及其产品。
为实现上述目的,本发明提供了如下技术方案:包括以下步骤:步骤一、制坯:将以重量份计的珍珠岩35~55份、膨润土5~10份、沸石10~20份、高岭土5~10份、凝灰石5~15份、黑泥10~20份、绿陶瓷硅粉0.4~1.0份、莹石尾矿10~20份、粉煤灰提取氧化铝残渣15~30份、海泡石5~15份、短切玄武岩纤维2~6份、聚丙烯短切纤维3~8份的原料进行混合后,然后破碎、湿法球磨、陈腐均匀,再进行喷雾干燥、造粒、制粉,而后压制成型得到素坯,再对素坯进行烘干得到坯体;步骤二、制釉、施釉:将以重量份计的坯体原料40~60份、钠长石20~30份、钾长石20~30份的原料进行球磨得到釉料,用釉料对所述坯体进行上釉;步骤三、将上釉后的坯体经1100℃~1300℃高温烧制,形成坯体闭口气孔均匀密布带釉面的发泡石料屋面保温砖。
本发明进一步设置:所述步骤一、制坯中:将以重量份计的珍珠岩45~50份、膨润土6~8份、沸石12~18份、高岭土6~8份、凝灰石8~12份、黑泥13~16份、绿陶瓷硅粉0.5~0.8份、莹石尾矿12~18份、粉煤灰提取氧化铝残渣18~26份、海泡石8~12份、短切玄武岩纤维3~5份、聚丙烯短切纤维5~7份的原料进行混合。
本发明进一步设置:所述步骤二、制釉、施釉中:将以重量份计的坯体原料45~55份、钠长石22~26份、钾长石22~26份的原料进行球磨得到釉料。
本发明进一步设置:所述步骤三中,将上釉后的坯体经1180℃~1200℃高温烧制。
本发明进一步设置:所述步骤二、制釉、施釉中:用釉料对所述坯体进行上釉后,在釉面上进行印花。
本发明进一步设置:所述印花采用网板印花或喷墨印花方式。
一种发泡石料屋面保温砖,包括坯体与釉面,所述坯体具有均匀密布的闭口气孔,所述坯体与釉面呈一体设置。
本发明与现有技术相比,其有益效果是:本发明发泡石料屋面保温砖充分利用尾矿等废弃物,制成具有轻质,热传导率低,防火,防水,耐老化,与水泥制品相容性好,耐气候,坯体与釉面采用上述材料烧结时装饰面(釉面)与坯体直接复合,装饰面丰富等优越性能可应用于建筑,装饰,环保等领域,其具体优点在于:
1.装饰面与坯体一体烧结成型,而无需粘结剂粘结。
2.轻量化。轻量化主要体现在产品与石材幕墙、大规格陶板相比,在重量上大幅度减轻,适合高层建筑,将简化面板与支承结构体系和施工工艺,大大降低工程成本,也为后期维护提供方便。
3.抗拉强度高。《建筑工程饰面砖粘结强度检验标准》(JGJ110-2008)中要求瓷砖的粘结强度不小于0.4Mpa。发泡石料屋面保温砖的抗拉强度≥1.0Mpa。采用专业外墙陶瓷粘结剂,完全能够确保拉伸粘结强度,满足规范要求。
4.导热系数≤0.07w/(m*k)。与无机轻集料保温砂浆相当,可充当外墙外保温系统的隔热保温材料。
5.防火性能好。产品经1200℃高温煅烧而成,燃烧性能为A1级。
6.吸水率低。产品体积吸水率≤0.8%,对照膨胀珍珠岩保温板等其它的保温体积吸水率≤10%,不会因外墙渗漏而降低隔热保温性能。
7.耐老化。陶瓷材料性能稳定,耐久性好,不老化,可实现与建筑物同寿命,是常规的有机保温材料无可比拟的。
8.相容性好。与水泥砂浆、混凝土等线膨胀系数相近,相容性好,粘结可靠,与高温烧制的传统的陶瓷建材一样,热胀冷缩下不开裂,不变形,不收缩。
9.采用粉煤灰提取氧化铝残渣作为制备发泡石料屋面保温砖的原料,既可以合理地利用粉煤灰提铝残渣,变废为宝提高粉煤灰提铝残渣的经济利用效率,又可以变害为利改善环境。最重要的是,粉煤灰提取氧化铝残渣中含有较高的硅含量和铝含量,当粉煤灰提取氧化铝残渣作为原料制作发泡石料屋面保温砖时,其中的二氧化硅和三氧化二铝在高温熔融时反应生成具有莫来石相的独特结构,这种结构能够使发泡石料屋面保温砖具有较高的抗拉强度。同时,这种粉煤灰提铝残渣颗粒粒径较细,而颗粒表面及体积内存在介孔、活性很高,使得其作为原料制备发泡石料屋面保温砖时能够在较低的温度下就易达到熔融状态形成熔体,而此时碳化硅氧化产生的气体留在熔体中形成气泡,使得到的发泡石料屋面保温砖的具有较高的气孔率。以含有纳米阵列孔结构的海泡石,既强化了矿物颗粒间堆砌形成的毫米级阵列孔孔壁的稳定性,又在烧结后留下矿物晶体本身具有的纳米阵列孔。传统的发泡微孔保温板常会因保温板内的各部位干缩比不一致而导致出现破裂(干缩破裂),而本发明将由连续纤维材料经表面处理后切成的段状短切纤维掺入,并通过短切纤维在发泡微孔保温板内部发挥均匀干缩应力的功能,使干缩应力趋于均匀的施加在整个保温板内部,大大降低了发泡石料屋面保温砖的干缩破坏率。短切玄武岩纤维发挥了增强作用,聚丙烯短切纤维在起到增韧的作用。
具体实施方式
实施例一、
步骤一、制坯:将以重量份计的珍珠岩35份、膨润土5份、沸石10份、高岭土5份、凝灰石5份、黑泥10份、绿陶瓷硅粉0.4份、莹石尾矿10份、粉煤灰提取氧化铝残渣15份、海泡石5份、短切玄武岩纤维2份、聚丙烯短切纤维3份的原料进行混合后,然后破碎、湿法球磨、陈腐均匀,再进行喷雾干燥、造粒、制粉,而后压制成型得到素坯,再对素坯进行烘干得到坯体;步骤二、制釉、施釉:将以重量份计的坯体原料40份、钠长石20份、钾长石20份的原料进行球磨至350目釉料,过筛出球到釉桶储存,用釉料对所述坯体进行上釉;步骤三、将上釉后的坯体经1100℃高温连续式辊道窑烧制,形成坯体闭口气孔均匀密布带釉面的发泡石料屋面保温砖。
实施例二、
步骤一、制坯:将以重量份计的珍珠岩55份、膨润土10份、沸石20份、高岭土10份、凝灰石15份、黑泥20份、绿陶瓷硅粉1.0份、莹石尾矿20份、粉煤灰提取氧化铝残渣30份、海泡石15份、短切玄武岩纤维6份、聚丙烯短切纤维8份的原料进行混合后,然后破碎、湿法球磨、陈腐均匀,再进行喷雾干燥、造粒、制粉,而后压制成型得到素坯,再对素坯在烘干窑进行烘干得到坯体;步骤二、制釉、施釉:将以重量份计的坯体原料60份、钠长石30份、钾长石30份的原料进行球磨至350目釉料,过筛出球到釉桶储存,用釉料对所述坯体进行以淋釉方式上釉;步骤三、将上釉后的坯体经1300℃高温连续式辊道窑烧制,形成坯体闭口气孔均匀密布带釉面的发泡石料屋面保温砖。
实施例三、步骤一、制坯:将以重量份计的珍珠岩45份、膨润土6份、沸石12份、高岭土6份、凝灰石8份、黑泥13份、绿陶瓷硅粉0.5份、莹石尾矿12份、粉煤灰提取氧化铝残渣18份、海泡石8份、短切玄武岩纤维3份、聚丙烯短切纤维5份的原料进行混合后,然后破碎、湿法球磨、陈腐均匀,再进行喷雾干燥、造粒、制粉,而后压制成型得到素坯,再对素坯在烘干窑进行烘干得到坯体;步骤二、制釉、施釉:将以重量份计的坯体原料45份、钠长石22份、钾长石22份的原料进行球磨至350目釉料,过筛出球到釉桶储存,用釉料对所述坯体以淋釉方式进行上釉;步骤三、将上釉后的坯体经1180℃高温连续式辊道窑烧制,形成坯体闭口气孔均匀密布带釉面的发泡石料屋面保温砖。
实施例四、步骤一、制坯:将以重量份计的珍珠岩50份、膨润土8份、沸石18份、高岭土8份、凝灰石12份、黑泥16份、绿陶瓷硅粉0.8份、莹石尾矿18份、粉煤灰提取氧化铝残渣26份、海泡石12份、短切玄武岩纤维5份、聚丙烯短切纤维7份的原料进行混合后,然后破碎、湿法球磨、陈腐均匀,再进行喷雾干燥、造粒、制粉,而后压制成型得到素坯,再对素坯在烘干窑进行烘干得到坯体;步骤二、制釉、施釉:将以重量份计的坯体原料55份、钠长石26份、钾长石26份的原料进行球磨至350目釉料,过筛出球到釉桶储存,用釉料对所述坯体以淋釉方式进行上釉;步骤三、将上釉后的坯体经1200℃高温连续式辊道窑烧制,形成坯体闭口气孔均匀密布带釉面的发泡石料屋面保温砖。
实施例五、步骤一、制坯:将以重量份计的珍珠岩48份、膨润土7份、沸石15份、高岭土7份、凝灰石10份、黑泥14份、绿陶瓷硅粉0.7份、莹石尾矿15份、粉煤灰提取氧化铝残渣23份、海泡石11份、短切玄武岩纤维4份、聚丙烯短切纤维6份的原料进行混合后,然后破碎、湿法球磨、陈腐均匀,再进行喷雾干燥、造粒、制粉,而后压制成型得到素坯,再对素坯在烘干窑进行烘干得到坯体;步骤二、制釉、施釉:将以重量份计的坯体原料50份、钠长石23份、钾长石24份的原料进行球磨至350目釉料,过筛出球到釉桶储存,用釉料对所述坯体以淋釉方式进行上釉;步骤三、将上釉后的坯体经1190℃高温连续式辊道窑烧制,形成坯体闭口气孔均匀密布带釉面的发泡石料屋面保温砖。
本实施例1-5发泡石料屋面保温砖,经检测,其性能指标如下参照表格:
实施例1 | 实施例2 | 实施例4 | 实施例5 | 实施例5 | |
容重 | ≤160kg/m2 | ≤160kg/m2 | ≤350kg/m2 | ≤320kg/m2 | ≤300kg/m2 |
抗拉强度 | ≥2.5MPA | ≥2.5MPA | ≥2.5MPA | ≥1.4MPA | ≥1.4MPA |
导热系数 | ≤0.085w/(m*k) | ≤0.085w/(m*k) | ≤0.08W/(m*k) | ≤0.07w/(m*k) | ≤0.07w/(m*k) |
防火性能 | A1级 | A1级 | A1级 | A1级 | A1级 |
吸水率 | ≤0.8% | ≤0.8% | ≤0.8% | ≤0.8% | ≤0.8% |
耐老化 | 耐老化 | 耐老化 | 耐老化 | 耐老化 | 耐老化 |
相容性 | 相容 | 相容 | 相容 | 相容 | 相容 |
抗压强度 | ≥6.5MPa | ≥6.2MPa | ≥5.4MPa | ≥4.3MPa | ≥3.8MPa |
Claims (7)
1.一种发泡石料屋面保温砖的制备方法,其特征在于:包括以下步骤:步骤一、制坯:将以重量份计的珍珠岩35~55份、膨润土5~10份、沸石10~20份、高岭土5~10份、凝灰石5~15份、黑泥10~20份、绿陶瓷硅粉0.4~1.0份、莹石尾矿10~20份、粉煤灰提取氧化铝残渣15~30份、海泡石5~15份、短切玄武岩纤维2~6份、聚丙烯短切纤维3~8份的原料进行混合后,然后破碎、湿法球磨、陈腐均匀,再进行喷雾干燥、造粒、制粉,而后压制成型得到素坯,再对素坯进行烘干得到坯体;步骤二、制釉、施釉:将以重量份计的坯体原料40~60份、钠长石20~30份、钾长石20~30份的原料进行球磨得到釉料,用釉料对所述坯体进行上釉;步骤三、将上釉后的坯体经1100℃~1300℃高温烧制,形成坯体闭口气孔均匀密布带釉面的发泡石料屋面保温砖。
2.根据权利要求1所述的发泡石料屋面保温砖的制备方法,其特征在于:所述步骤一、制坯中:将以重量份计的珍珠岩45~50份、膨润土6~8份、沸石12~18份、高岭土6~8份、凝灰石8~12份、黑泥13~16份、绿陶瓷硅粉0.5~0.8份、莹石尾矿12~18份、粉煤灰提取氧化铝残渣18~26份、海泡石8~12份、短切玄武岩纤维3~5份、聚丙烯短切纤维5~7份的原料进行混合。
3.根据权利要求1所述的发泡石料屋面保温砖的制备方法,其特征在于:所述步骤二、制釉、施釉中:将以重量份计的坯体原料45~55份、钠长石22~26份、钾长石22~26份的原料进行球磨得到釉料。
4.根据权利要求1所述的发泡石料屋面保温砖的制备方法,其特征在于:所述步骤三中,将上釉后的坯体经1180℃~1200℃高温烧制。
5.根据权利要求1或2或3或4所述的发泡石料屋面保温砖的制备方法,其特征在于:所述步骤二、制釉、施釉中:用釉料对所述坯体进行上釉后,在釉面上进行印花。
6.根据权利要求5所述的发泡石料屋面保温砖的制备方法,其特征在于:所述印花采用网板印花或喷墨印花方式。
7.根据权利要求1-5任一项所述的发泡石料屋面保温砖的制备方法制得的发泡石料屋面保温砖,其特征在于:包括坯体与釉面,所述坯体具有均匀密布的闭口气孔,所述坯体与釉面呈一体设置。
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