CN105712708B - 一种高效节能陶瓷材料 - Google Patents

一种高效节能陶瓷材料 Download PDF

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CN105712708B
CN105712708B CN201610039082.XA CN201610039082A CN105712708B CN 105712708 B CN105712708 B CN 105712708B CN 201610039082 A CN201610039082 A CN 201610039082A CN 105712708 B CN105712708 B CN 105712708B
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龙梅
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Southwest Minzu University
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Abstract

本发明公开了一种高效节能陶瓷材料，由以下重量份的原料制备而成：Al2O3 42‑55份、钛酸钡粉5‑15份、纳米二氧化硅35‑50份、稀土氧化物0.6‑2.2份、金属硅10‑15份、耐化学品改性剂5‑15份、钛刚玉2‑20份、氧化锆5‑10份、热稳定剂3‑7份，二苯基砜磺酸盐0.1‑1份、所述稀土氧化物由La2O3、Eu2O3、Tb2O按质量比1∶2∶1混合所得。本发明所得材料耐热性、耐腐蚀性强，性能稳定，且能够有效地防止在操作条件下VOC中的有机硅物质氧化生成的二氧化硅结晶在陶瓷材料表面沉积。

Description

一种高效节能陶瓷材料
技术领域
本发明涉及复合材料领域，具体涉及一种高效节能陶瓷材料。
背景技术
陶瓷材料作为环保设备的蓄热、传热介质是伴随着环保设备的发展而被广泛应用的。蓄热、传热介质所使用的陶瓷材料主要有莫来石(3Al2O3·2SiO2)材质、堇青石+莫来石材质、堇青石+氧化铝材质、莫来石+氧化铝材质等，这些材料既能满足蓄热、传热的要求，同时造价又相对低廉。
有机废气中若含有有机硅类化合物，在废气被氧化的同时，有机硅会被氧化为无机的二氧化硅并在蓄热陶瓷填料表面形成结晶。由于陶瓷的主要成分硅铝酸盐与二氧化硅结晶的相近性，导致二氧化硅与陶瓷表面的硅铝酸盐以类似于化学键的形式牢固地结合在一起，宏观则表现为二氧化硅结晶在陶瓷表面生长。二氧化硅沉积会造成填料床有效通径减小，床层阻力降增加，被处理气体的停留时间降低等影响，发展到严重程度时则导致设备处理完全失效，此时必须更换填料。
同时现有的陶瓷材料也普遍容易受到物料冲刷、气蚀和微量化学介质的腐蚀，性能不温度。
发明内容
为解决上述问题，本发明提供了一种高效节能陶瓷材料，耐热性、耐腐蚀性强，性能稳定，且能够有效地防止在操作条件下VOC中的有机硅物质氧化生成的二氧化硅结晶在陶瓷材料表面沉积。
为实现上述目的，本发明采取的技术方案为：
一种高效节能陶瓷材料，由以下重量份的原料制备而成：
Al2O342-55份、钛酸钡粉5-15份、纳米二氧化硅35-50份、稀土氧化物0.6-2.2份、金属硅10-15份、耐化学品改性剂5-15份、钛刚玉2-20份、氧化锆5-10份、热稳定剂3-7份，二苯基砜磺酸盐0.1-1份、所述稀土氧化物由La2O3、Eu2O3、Tb2O按质量比1∶2∶1混合所得。
优选地，所述耐化学品改性剂为含氟类添加剂，分子量为1100-10900，可以为液体或固体形态存在。
优选地，所述含氟类添加剂为含有全氟烷基的丙烯酸系添加剂。
优选地，所述热稳定剂为稀土热稳定剂和有机锡类热稳定剂中的一种或两种的组合。
优选地，还包括Na2O、K2O、MgO、Fe2O3、ZnO。
优选地，Na2O+K2O+MgO占原料总质量的百分比≤3.5％，Fe2O3占原料总质量的百分比≤1.2％，ZnO占原料总质量的百分比≤0.80％。
本发明具有以下有益效果：
耐热性、耐腐蚀性强，性能稳定，且能够有效地防止在操作条件下VOC中的有机硅物质氧化生成的二氧化硅结晶在陶瓷材料表面沉积。
具体实施方式
为了使本发明的目的及优点更加清楚明白，以下结合实施例对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
以下实施例中所使用的耐化学品改性剂为含有全氟烷基的丙烯酸系添加剂，分子量为1100-10900，可以为液体或固体形态存在，所使用的热稳定剂为稀土热稳定剂和有机锡类热稳定剂中的一种或两种的组合。
实施例1
一种高效节能陶瓷材料，由以下重量份的原料制备而成：
Al2O342份、钛酸钡粉5份、纳米二氧化硅35份、稀土氧化物0.6份、金属硅10份、耐化学品改性剂5份、钛刚玉2份、氧化锆5份、热稳定剂3份，二苯基砜磺酸盐0.1份、所述稀土氧化物由La2O3、Eu2O3、Tb2O按质量比1∶2∶1混合所得，还包括Na2O、K2O、MgO、Fe2O3、ZnO，Na2O+K2O+MgO占原料总质量的百分比≤3.5％，Fe2O3占原料总质量的百分比≤1.2％，ZnO占原料总质量的百分比≤0.80％。
实施例2
一种高效节能陶瓷材料，由以下重量份的原料制备而成：
Al2O355份、钛酸钡粉15份、纳米二氧化硅50份、稀土氧化物2.2份、金属硅15份、耐化学品改性剂15份、钛刚玉20份、氧化锆10份、热稳定剂7份，二苯基砜磺酸盐1份、所述稀土氧化物由La2O3、Eu2O3、Tb2O按质量比1∶2∶1混合所得，还包括Na2O、K2O、MgO、Fe2O3、ZnO，Na2O+K2O+MgO占原料总质量的百分比≤3.5％，Fe2O3占原料总质量的百分比≤1.2％，ZnO占原料总质量的百分比≤0.80％。
实施例3
一种高效节能陶瓷材料，由以下重量份的原料制备而成：
Al2O348.5份、钛酸钡粉10份、纳米二氧化硅42.5份、稀土氧化物1.4份、金属硅12.5份、耐化学品改性剂10份、钛刚玉11份、氧化锆7.5份、热稳定剂5份，二苯基砜磺酸盐0.55份、所述稀土氧化物由La2O3、Eu2O3、Tb2O按质量比1∶2∶1混合所得，还包括Na2O、K2O、MgO、Fe2O3、ZnO，Na2O+K2O+MgO占原料总质量的百分比≤3.5％，Fe2O3占原料总质量的百分比≤1.2％，ZnO占原料总质量的百分比≤0.80％。
本具体实施选用稀土氧化物作为陶瓷改性组分制备蓄热陶瓷材料，并将其配比调节为最优，能够有效地防止在操作条件下VOC中的有机硅物质氧化生成的二氧化硅结晶在陶瓷材料表面沉积，提高了所得材料的性能；引入全氟烷基的丙烯酸系添加剂作为耐化学品改性剂，该添加剂的迁移效率极高，在烧结过程中即可完全迁移到材料表面形成一种保护膜，这层保护膜和水不相容且具有较强的耐酸碱的性能，从而添加了该类添加剂材料在遇到腐蚀时，表面会存在巨大的表面张力，阻止了腐蚀物质进入到材料内部，金属硅能够减少原料在烧结过程中的氧化，纳米二氧化硅在烧结过程中，能在材料表面产生釉层，密封气孔，从而有效的避免渗漏
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (3)

1.一种高效节能陶瓷材料，其特征在于，由以下重量份的原料制备而成：
Al2O342-55份、钛酸钡粉5-15份、纳米二氧化硅35-50份、稀土氧化物0.6-2.2份、金属硅10-15份、耐化学品改性剂5-15份、钛刚玉2-20份、氧化锆5-10份、热稳定剂3-7份，二苯基砜磺酸盐0.1-1份、所述稀土氧化物由La2O3、Eu2O3、Tb2O按质量比1∶2∶1混合所得；
其中耐化学品改性剂为含氟类添加剂，分子量为1100-10900，其为液体或固体形态存在；
其中含氟类添加剂为含有全氟烷基的丙烯酸系添加剂；
其中热稳定剂为稀土热稳定剂和有机锡类热稳定剂中的一种或两种的组合。
2.根据权利要求1所述的一种高效节能陶瓷材料，其特征在于，还包括Na2O、K2O、MgO、Fe2O3、ZnO。
3.根据权利要求2所述的一种高效节能陶瓷材料，其特征在于，Na2O+K2O+MgO占原料总质量的百分比≤3.5％，Fe2O3占原料总质量的百分比≤1.2％，ZnO占原料总质量的百分比≤0.80％。
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