CN114407164A - 一种纳米微孔绝热板的湿法成型方法 - Google Patents
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Abstract
本发明公开了一种纳米微孔绝热板的湿法成型方法,首先通过干粉混合和干粉加硅溶胶混合处理,接着加入模具进行刮平,随后通过振实和表面抹平,最后进行常温养护和加热干燥,本发明通过加入无机凝胶材料后湿法成型的方法,增加板材的强度,提高抗折性能,减少或杜绝板面的粉化现象,从而制成大板面尺寸的纳米微孔板材,强度增加后可以随意分切成需要的形状,提高了炉窑的使用寿命。
Description
技术领域
本发明涉及纳米微孔绝热板的制造技术领域,特别涉及一种纳米微孔绝热板的湿法成型方法。
背景技术
传统上,隔热耐火材料是通过提高孔隙率和降低孔隙尺寸来减少连续固体传热面积,减少单位面积的热流量,以降低隔热材料的导热系数。在低温时,耐火纤维、硅酸钙制品的导热系数尚可。但是在高温时,热量由于辐射传热作用在气相中的传递速率加快,导致提高材料的气孔率可能无法降低材料的热导率。
目前纳米微孔板采用干法成型方法,尽管解决了生产工艺简单、生产能耗低的问题,但是由于成品的强度弱抗折性能差,很难制成大规格大尺寸的板面,只能制成小块的尺寸,导致在应用安装时需要很多拼接的地方,加大了板缝中冷热桥的产生,由于板面尺寸小在施工安装时工效低施工成本高,由于强度低不能分切成异性件,高温炉窑很多不规则的地方不能充分应用,影响使用效果,另外干法生产板面粉化严重,很难和耐火泥、浇铸料等其它的耐火材料相互融合,导致使用寿命降低。
发明内容
发明目的:本发明的目的是为了解决现有技术中的不足,提供一种纳米微孔绝热板的湿法成型方法。
技术方案:本发明一种纳米微孔绝热板的湿法成型方法,包括如下步骤:
(1)干粉混合;
(2)干粉加硅溶胶混合;
(3)加入模具进行刮平;
(4)振实;
(5)表面抹平;
(6)进行常温养护;
(7)加热干燥;
(8)取得纳米微孔绝热板的制品。
本发明的进一步改进在于,步骤(1)中,将50-80%的二氧化硅粉、10-25%的遮光剂、10-30%的纤维加入高速混合机分散混合成干料。
本发明的进一步改进在于,高速混合机的转速为800-1000转,混合时长为3-5分钟。
本发明的进一步改进在于,步骤(2)中,加入低速搅拌机边搅拌边加入结合剂,搅拌成半湿状的的湿料。
本发明的进一步改进在于,步骤(2)中,低速搅拌机的转速为100-200转,粉料含量为40-60%,结合剂含量为40-60%,湿料的湿度按重量计为45-55%。
本发明的进一步改进在于,步骤(3)中,将湿料的一半装入模具中刮平,铺设一层网格布,将另一半的湿料铺在模具内。
本发明的进一步改进在于,步骤(4)中,在振实台振动密实后进行表面收光压花处理。
本发明的进一步改进在于,步骤(6)中,进行常温养护的时间为12-24小时。
本发明的进一步改进在于,步骤(7)中,加热干燥的温度为150-200摄氏度,加热干燥至含湿量在5%以内。
与现有技术相比,本发明提供的一种纳米微孔绝热板的湿法成型方法,至少实现了如下的有益效果:
生产纳米微孔绝热板的板面尺寸大,减少了板缝也减少了冷热桥的产生,提高了隔热效果,降低了施工安装的成本,板材的强度和抗折性能提高后可以随意分切成异形件,提高了非标定制的能力,也解决了高温炉窑不规则地方纳米微孔板的应用,板面的硬化板表面强度的增加,解决了和和耐火泥、浇铸料等其它的耐火材料相互融合,提高了炉窑的使用寿命。
具体实施方式
现在详细描述本发明的各种示例性实施例。应注意到:除非另外具体说明,否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的,决不作为对本发明及其应用或使用的任何限制。对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论,但在适当情况下,所述技术、方法和设备应当被视为说明书的一部分。在这里示出和讨论的所有例子中,任何具体值应被解释为仅仅是示例性的,而不是作为限制。因此,示例性实施例的其它例子可以具有不同的值。
实施例1,
一种纳米微孔绝热板的湿法成型方法,包括如下步骤:
(1)干粉混合;
(2)干粉加硅溶胶混合;
(3)加入模具进行刮平;
(4)振实;
(5)表面抹平;
(6)进行常温养护;
(7)加热干燥;
(8)取得纳米微孔绝热板的制品。
先将50-80%的二氧化硅粉、10-25%的遮光剂、10-30%的纤维加入高速混合机分散混合成干料,转速为800-1000转,时间为3-5分钟,再加入转速为100-200转的低速搅拌机边搅拌边加入结合剂,粉料40-60%,结合剂40-60%,搅拌成半湿状的湿料,湿度按重量计45-55%,太干粘度不够造成成型困难,太湿会造成流浆状态,导致微孔堵塞影响隔热效果,将湿料装入模具中刮平,在振实台振动密实后表面收光压花处理,常温养护12-24小时后放入干燥箱以150-200度加热干燥至含湿量在5%以内取得制品。
实施例2,
(1)干粉混合;
(2)干粉加硅溶胶混合;
(3)加入模具进行刮平;
(4)振实;
(5)表面抹平;
(6)进行常温养护;
(7)加热干燥;
(8)取得纳米微孔绝热板的制品。
先将50-80%的二氧化硅粉、10-25%的遮光剂、10-30%的纤维加入高速混合机分散混合成干料,转速为800-1000转,时间为3-5分钟,再加入转速为100-200转的低速搅拌机边搅拌边加入结合剂,粉料40-60%,结合剂40-60%,搅拌成半湿状的湿料,湿度按重量计45-55%,太干粘度不够造成成型困难,太湿会造成流浆状态,导致微孔堵塞影响隔热效果,将一半湿料装入模具中刮平,再铺设一层网格布,网格布的规格为80-140克/平方米,网孔1厘米-1.5厘米,再将另一半的湿料铺在模具内,在振实台振动密实后表面收光压花处理,常温养护12-24小时后放入干燥箱以150-200度加热干燥至含湿量在5%以内取得制品。
通过上述实施例可知,本发明至少实现了如下的有益效果:
生产出纳米微孔绝热板的板面尺寸大,减少了板缝也减少了冷热桥的产生,提高了隔热效果,降低了施工安装的成本,板材的强度和抗折性能提高后可以随意分切成异形件,提高了非标定制的能力,也解决了高温炉窑不规则地方纳米微孔板的应用,板面的硬化板表面强度的增加,解决了和和耐火泥、浇铸料等其它的耐火材料相互融合,提高了炉窑的使用寿命。
虽然已经通过例子对本发明的一些特定实施例进行了详细说明,但是本领域的技术人员应该理解,以上例子仅是为了进行说明,而不是为了限制本发明的范围。本领域的技术人员应该理解,可在不脱离本发明的范围和精神的情况下,对以上实施例进行修改。本发明的范围由所附权利要求来限定。
Claims (9)
1.一种纳米微孔绝热板的湿法成型方法,其特征在于,包括如下步骤:
(1)干粉混合;
(2)干粉加硅溶胶混合;
(3)加入模具进行刮平;
(4)振实;
(5)表面抹平;
(6)进行常温养护;
(7)加热干燥;
(8)取得纳米微孔绝热板的制品。
2.根据权利要求1所述的纳米微孔绝热板的湿法成型方法,其特征在于,
所述步骤(1)中,将50-80%的二氧化硅粉、10-25%的遮光剂、10-30%的纤维加入高速混合机分散混合成干料。
3.根据权利要求2所述的纳米微孔绝热板的湿法成型方法,其特征在于,
所述高速混合机的转速为800-1000转,混合时长为3-5分钟。
4.根据权利要求1所述的纳米微孔绝热板的湿法成型方法,其特征在于,
所述步骤(2)中,加入低速搅拌机边搅拌边加入结合剂,搅拌成半湿状的的湿料。
5.根据权利要求4所述的纳米微孔绝热板的湿法成型方法,其特征在于,
所述步骤(2)中,所述低速搅拌机的转速为100-200转,粉料含量为40-60%,结合剂含量为40-60%,所述湿料的湿度按重量计为45-55%。
6.根据权利要求1所述的纳米微孔绝热板的湿法成型方法,其特征在于,
所述步骤(3)中,将所述湿料的一半装入模具中刮平,铺设一层网格布,将另一半的湿料铺在模具内。
7.根据权利要求1所述的纳米微孔绝热板的湿法成型方法,其特征在于,所述步骤(4)中,在振实台振动密实后进行表面收光压花处理。
8.根据权利要求1所述的纳米微孔绝热板的湿法成型方法,其特征在于,所述步骤(6)中,进行常温养护的时间为12-24小时。
9.根据权利要求1所述的纳米微孔绝热板的湿法成型方法,其特征在于,所述步骤(7)中,加热干燥的温度为150-200摄氏度,加热干燥至含湿量在5%以内。
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| CN115010501A (zh) * | 2022-06-08 | 2022-09-06 | 佛山市中柔材料科技有限公司 | 弹性陶瓷微纳米纤维气凝胶隔热材料及其制备方法、应用 |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115010501A (zh) * | 2022-06-08 | 2022-09-06 | 佛山市中柔材料科技有限公司 | 弹性陶瓷微纳米纤维气凝胶隔热材料及其制备方法、应用 |
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