CN113754458A - 一种SiO2掺杂树脂灰多孔陶瓷及其制备方法 - Google Patents
一种SiO2掺杂树脂灰多孔陶瓷及其制备方法 Download PDFInfo
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 48
- 239000000919 ceramic Substances 0.000 title claims abstract description 42
- 235000012239 silicon dioxide Nutrition 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 238000002441 X-ray diffraction Methods 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 20
- 238000010521 absorption reaction Methods 0.000 claims abstract description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 19
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- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 19
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 18
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 18
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 18
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 18
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 4
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
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- 150000001875 compounds Chemical class 0.000 claims description 2
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- 238000011534 incubation Methods 0.000 claims 1
- 239000011148 porous material Substances 0.000 description 6
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Abstract
本发明公开了一种SiO2掺杂树脂灰多孔陶瓷,涉及陶瓷制备技术领域,多孔陶瓷含有SiO2、Al2O3、Al6Si013和Fe2O3、MnO2,陶瓷的第一X射线衍射强度峰和第二X射线衍射强度峰对应的相均为Al6Si2O13相,第一X射线衍射强度峰对应的2θ为26.201°,第二X射线衍射强度峰对应的2θ为33.100°,第三X射线衍射强度峰对应的相为Al2O3,所述第三X射线衍射强度峰对应的2θ为35.099°。本发明方法通过气孔率等数据获悉,在二氧化硅掺量为20%,且温度为1300℃时材料的气孔率,吸水率均为八组样品中最低,但体积密度最低的是二氧化硅掺量为40%且温度为1300℃的样品。
Description
技术领域
本发明涉及多孔陶瓷制备技术领域,尤其涉及一种SiO2掺杂树脂灰多孔陶瓷及其制备方法。
背景技术
多孔陶瓷作为一种新型的陶瓷材料,其具有许多优良的特性,例如:气孔率高、体积密度小以及比表面积大等。加上陶瓷材料本身具有的耐高温、抗腐蚀性、优良的化学物理稳定性以及热稳定性等,使多孔陶瓷材料被广泛的运用于化工、冶金、能源环保和生物等多个领域。目前,通过利用多孔陶瓷孔结构的均匀透过性,可以制造出各种各样的分离装置和过滤器等,可运用于净化污水、过滤烟尘、吸音降噪等方面。同时,通过利用其发达的比表面积,可以制备出运用于生物制药、敏感元件等领域的催化剂载体、热交换器。
随着世界材料科学的飞速发展,二氧化硅材料的性能及应用也得到了极大的改善和拓展。通过制备多孔二氧化硅陶瓷,将二氧化硅陶瓷与多孔陶瓷的优良特性有机的结合起来,使其应用领域更为广泛,同时,其技术性能也有待进一步提高。二氧化硅陶瓷具有低导热率、热膨胀系数小、密度低以及良好的体积稳定性等优良特性,是轻质隔热材料的理想选择。
因此,本发明致力于提供一种使用二氧化硅掺杂树脂灰制备多孔陶瓷的方法,以此实现资源充分利用并且解决多孔陶瓷吸水率和气孔率适中的问题。
发明内容
有鉴于现有技术的上述缺陷,本发明所要解决的技术问题是提供一种使用二氧化硅掺杂树脂灰制备多孔陶瓷的方法,以此实现资源充分利用并且解决多孔陶瓷吸水率和气孔率适中的问题。
为实现上述目的,本发明提供了一种SiO2掺杂树脂灰多孔陶瓷,其特征在于,所述多孔陶瓷含有SiO2、Al2O3、Al6Si013和Fe2O3、MnO2,所述陶瓷的第一X射线衍射强度峰和第二X射线衍射强度峰对应的相均为Al6Si2O13相,所述第一X射线衍射强度峰对应的2θ为26.201°,所述第二X射线衍射强度峰对应的2θ为33.100°,第三X射线衍射强度峰对应的相为Al2O3,所述第三X射线衍射强度峰对应的2θ为35.099°,所述第一X射线衍射强度峰与所述第二X射线衍射强度峰强度比大于所述第二X射线衍射强度峰与所述第三X射线衍射强度峰强度比。
本发明还提供了一种二氧化硅掺杂树脂灰多孔陶瓷的制备方法,其特征在于,所述方法包括步骤:
将树脂灰、二氧化硅、三氧化二铝称重并混合均匀,其中,二氧化硅占混料总重量比为10~40%;
将混好的物料统一称重并将所述物料造型;
干燥造型后的物料块并将其进行烧制得到样品。
与现有技术相比,本发明的优势在于:
(1)本发明方法通过气孔率等数据获悉,在二氧化硅掺量为20%,且温度为1300℃时材料的气孔率,吸水率均为八组样品中最低,但体积密度最低的是二氧化硅掺量为40%且温度为1300℃的样品;
(2)本发明方法通过抗压强度的数据获悉在二氧化硅掺量为10%且温度为1300℃时抗压强度最高,同时发现抗压强度会随着二氧化硅掺量的升高而减小;
(3)本发明方法通过抗折强度的数据获悉在二氧化硅掺量为10%且温度为1300℃时抗折强度最高,同时发现抗折强度会随着二氧化硅掺量的升高而减小;
(4)本发明方法通过XRD数据获悉,在二氧化硅掺量为10%且温度为1300℃时,实验最终产物Al6Si2O13含量最多,且最终产物会随着二氧化硅掺量的增多而减少;
(5)综合吸水率、气孔率、体积密度等性能参数,可以获悉二氧化硅掺量为30%,且温度为1200°时,陶瓷材料的吸水率、气孔率为20.6%、36.7%,是八组样品中性能最佳。
以下将结合附图对本发明的构思、具体结构及产生的技术效果作进一步说明,以充分地了解本发明的目的、特征和效果。
附图说明
图1为树脂灰的XRD图;
图2是树脂灰的形貌图;
图3是制备样品的吸水率图;
图4是制备样品的气孔率图;
图5是1号样品1200℃烧制1h的XRD图;
图6是2号样品1200℃烧制1h的XRD图;
图7是3号样品1200℃烧制1h的XRD图;
图8是4号样品1200℃烧制1h的XRD图;
图9是1号样品1300℃烧制1h的XRD图;
图10是2号样品1300℃烧制1h的XRD图;
图11是3号样品1300℃烧制1h的XRD图;
图12是4号样品1300℃烧制1h的XRD图;
图13是4号样品1300℃烧制的SEM;
图14是1号样品1200℃烧制的SEM。
具体实施方式
以下参考说明书附图介绍本发明的多个优选实施例,使其技术内容更加清楚和便于理解。本发明可以通过许多不同形式的实施例来得以体现,本发明的保护范围并非仅限于文中提到的实施例。
本发明提供了一种SiO2掺杂树脂灰多孔陶瓷,其特征在于,所述多孔陶瓷含有SiO2、Al2O3、Al6Si013和Fe2O3、MnO2,所述陶瓷的第一X射线衍射强度峰和第二X射线衍射强度峰对应的相均为Al6Si2O13相,所述第一X射线衍射强度峰对应的2θ为26.201°,所述第二X射线衍射强度峰对应的2θ为33.100°,第三X射线衍射强度峰对应的相为Al2O3,所述第三X射线衍射强度峰对应的2θ为35.099°,所述第一X射线衍射强度峰与所述第二X射线衍射强度峰强度比大于所述第二X射线衍射强度峰与所述第三X射线衍射强度峰强度比。
在一个较佳的实施例中,所述陶瓷的制备原料以重量百分比记为:10%~40%的SiO2,50%~80%的树脂灰,余量为Al2O3。
在一个较佳的实施例中,SiO2重量百分比为10%~30%,所述陶瓷气孔率为15.6%~38.2。
在一个较佳的实施例中,所述陶瓷的吸水率为6.6%~22.1%。
本发明还提供了一种二氧化硅掺杂树脂灰多孔陶瓷的制备方法,其特征在于,所述方法包括步骤:
将树脂灰、二氧化硅、三氧化二铝称重并混合均匀,其中,二氧化硅占混料总重量比为10~40%;
将混好的物料统一称重并将所述物料造型;
干燥造型后的物料块并将其进行烧制得到样品。
在一个较佳的实施例中,在混料时添加增稠剂以确保混料之间的粘稠性.
在一个较佳的实施例中,所述增稠剂为以下任意一种或多种:酒精、甲基纤维素、羧甲基纤维素、羟乙基纤维素、羟丙基甲基纤维素。
在一个较佳的实施例中,所述烧制包括:将干燥后的块状物料放入马弗炉中进行烧制,马弗炉的升温速率为10-15℃/min,先在500-550℃下第一次保温0.5-1.0h,之后在升温到1200℃-1500℃第二次保温1-1.5h。
在一个较佳的实施例中,第二次保温温度为1200-1400℃。
在一个较佳的实施例中,所述方法还包括:样品烧制完成后测定所述样品的吸水率、气孔率、体积密度、抗压强度和抗折强度。
本发明方法通过气孔率等数据获悉,在二氧化硅掺量为20%,且温度为1300℃时材料的气孔率,吸水率均为八组样品中最低,但体积密度最低的是二氧化硅掺量为40%且温度为1300℃的样品。
图1为树脂灰的XRD图,从图谱分析可知,主要矿物相为SiO2、Al2O3、MnO2、Fe2O3,实验中所要制备的陶粒砂中的成分(表2.2)与树脂灰XRD图谱中分析的主要矿物相大致吻合。
图2为树脂灰的形貌图,从图上可以看出树脂灰内部分布良好,其中的颗粒形状不一,存在的物质也是多样的。树脂灰样品表面空隙较大,多孔,气孔的分布不均,形状各异。
下面结合具体实施例来说明本发明方法的具体实施方式。
利用所准备好的Al2O3、SiO2以及树脂灰将其按照4个不同配比混合,其配比如表1所示:
表1样品成分配比
根据实验现象、XRD分析和气孔率测试结果确定最佳的实验配比,并将该配比在1200℃、1300℃、1400℃、1500℃等分别进行烧制,分析多孔陶瓷的性能。
性能测试:
1)气孔率测试
表2吸水率、气孔率和体积密度
图3是制备样品的吸水率图,从图中可以看出1200℃的四个样品的吸水率在3号和4号有一个明显的下降,1200℃的所有样品呈现出整体下降的趋势。但是1300℃的样品吸水率呈现出整体上升的趋势,且在二氧化硅含量为20%时吸水率最小。
图4是制备样品的气孔率图,由图4可以看出,1200℃样品的气孔率在3号样和4号样有一个明显的下降,整体呈现一个下降的趋势,而1300℃是一个整体上升的趋势,由此图可以看出吸水率最低的是1300℃时二氧化硅掺量为20%的样品。
2)XRD图谱及分析
图5是1号样品1200℃烧制1h的XRD图,这组样品的主要物相是:SiO2,Al2O3,并且含有较多的Al6Si013,表明含有实验最终产物;其中,图5所示XRD图的导出数据如下:
图6是2号样品1200℃烧制1h的XRD图,从图中可以看出,这组样品的主要物相是:SiO2,Al2O3。并且含有实验最终产物Al6Si013,其中,图6所示XRD图的导出数据如下:
图7是3号样品1200℃烧制1h的XRD图,从图中可以看出,这组样品的主要物相是:SiO2,Al2O3。且含有一些Al6Si013,其中,图7所示XRD图的导出数据如下:
图8是4号样品1200℃烧制1h的XRD图,从图中可以看出,这组数据杂峰最少,除了SiO2,Al2O3等物质之外还有其他Fe2O3、MnO2等物质的出现,其中,图8所示XRD图的导出数据如下:
图9是1号样品1300℃烧制1h的XRD图,由图中可以看出,本样品的杂峰较多,并且有很多实验最终产物Al6SiO13,还有SiO2,Al2O3等物质存在;其中,图9所示XRD图的导出数据如下:
图10是2号样品1300℃烧制1h的XRD图,由图中可以看出,本组数据杂峰也相对较多,并且有很多实验最终产物Al6SiO13,还有SiO2,Al2O3,Mn2O3等物质存在,其中,图10所示XRD图的导出数据如下:
图11是3号样品1300℃烧制1h的XRD图,由图中可以看出,本组杂峰相较于其两组数据来讲变少,且Al2O3含量明显变少,取而代之的是Mn2O3的含量变多。并且也含有较多的,其中,图11所示XRD图的导出数据如下:
图12是4号样品1300℃烧制1h的XRD图,由图中可以看出,本组数据杂峰更少且基本只含有SiO2和实验最终产物,其中,图12所示XRD图的导出数据如下:
图13是4号样品1300℃烧制的SEM,从图中可以看出本组实验样品致密度不是很好,并且含有一些孔,且孔的分布不均匀。样品多为网状结构,导致样品致密度比较低,这与前文所得结论基本相似;
图14是1号样品1200℃烧制的SEM,由图中可以看出气孔的扫描电镜结果较低且均匀,并且孔的分布整体较均匀,结合气孔率的数据来看,这组样品的气孔率,吸水率的数据也与扫描电镜的结果相符。
以上详细描述了本发明的较佳具体实施例。应当理解,本领域的普通技术无需创造性劳动就可以根据本发明的构思做出诸多修改和变化。因此,凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的实验可以得到的技术方案,皆应在由权利要求书所确定的保护范围内。
Claims (10)
1.一种SiO2掺杂树脂灰多孔陶瓷,其特征在于,所述多孔陶瓷含有SiO2、Al2O3、Al6Si013和Fe2O3、MnO2,所述陶瓷的第一X射线衍射强度峰和第二X射线衍射强度峰对应的相均为Al6Si2O13相,所述第一X射线衍射强度峰对应的2θ为26.201°,所述第二X射线衍射强度峰对应的2θ为33.100°,第三X射线衍射强度峰对应的相为Al2O3,所述第三X射线衍射强度峰对应的2θ为35.099°,所述第一X射线衍射强度峰与所述第二X射线衍射强度峰强度比大于所述第二X射线衍射强度峰与所述第三X射线衍射强度峰强度比。
2.如权利要求1所诉的多孔陶瓷,其中,所述陶瓷的制备原料以重量百分比记为:10%~40%的SiO2,50%~80%的树脂灰,余量为Al2O3。
3.如权利要求1所述的多孔陶瓷,其中,SiO2重量百分比为10%~30%,所述陶瓷气孔率为15.6%~38.2。
4.如权利要求1所述的多孔陶瓷,其中,所述陶瓷的吸水率为6.6%~22.1%。
5.权利要求1~4任一项权利要求所述的二氧化硅掺杂树脂灰多孔陶瓷的制备方法,其特征在于,所述方法包括步骤:
将树脂灰、二氧化硅、三氧化二铝称重并混合均匀,其中,二氧化硅占混料总重量比为10~40%;
将混好的物料统一称重并将所述物料造型;
干燥造型后的物料块并将其进行烧制得到样品。
6.如权利要求5所述的方法,其中,在混料时添加增稠剂以确保混料之间的粘稠性.
7.如权利要求6所述的方法,其中,所述增稠剂为以下任意一种或多种:酒精、甲基纤维素、羧甲基纤维素、羟乙基纤维素、羟丙基甲基纤维素。
8.如权利要求5所述的方法,其中,所述烧制包括:将干燥后的块状物料放入马弗炉中进行烧制,马弗炉的升温速率为10-15℃/min,先在500-550℃下第一次保温0.5-1.0h,之后在升温到1200℃-1500℃第二次保温1-1.5h。
9.如权利要求8所述的方法,其中,第二次保温温度为1200-1400℃。
10.如权利要求5所述的方法,其中,所述方法还包括:样品烧制完成后测定所述样品的吸水率、气孔率、体积密度、抗压强度和抗折强度。
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