CN117362071A - 陶瓷平板膜支撑体及其制备方法与在陶瓷平板膜中的应用 - Google Patents
陶瓷平板膜支撑体及其制备方法与在陶瓷平板膜中的应用 Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 118
- 239000012528 membrane Substances 0.000 title claims abstract description 96
- 238000002360 preparation method Methods 0.000 title claims abstract description 34
- 239000000084 colloidal system Substances 0.000 claims abstract description 59
- 239000002002 slurry Substances 0.000 claims abstract description 44
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000000203 mixture Substances 0.000 claims abstract description 43
- 238000005245 sintering Methods 0.000 claims abstract description 34
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- 238000001035 drying Methods 0.000 claims abstract description 25
- 238000005520 cutting process Methods 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 20
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 20
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 20
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 18
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 19
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 14
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 14
- 239000000292 calcium oxide Substances 0.000 claims description 14
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 14
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 14
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 13
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 12
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 12
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 12
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical group [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 8
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 7
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 4
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- 235000019832 sodium triphosphate Nutrition 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 238000005336 cracking Methods 0.000 description 5
- 229920002472 Starch Polymers 0.000 description 4
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- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 2
- 229940063655 aluminum stearate Drugs 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 239000012982 microporous membrane Substances 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 235000012222 talc Nutrition 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
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- 238000009826 distribution Methods 0.000 description 1
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- 230000002431 foraging effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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Abstract
本发明属于陶瓷制品的制备技术领域,具体涉及陶瓷平板膜支撑体及其制备方法与在陶瓷平板膜中的应用。所述的陶瓷平板膜支撑体的制备方法,包括以下步骤:将刚玉骨料、莫来石纤维、氧化锆、高岭土、粘合剂、造孔剂,干混均匀,得到混合料;制备胶体泥浆,向混合料中,边搅拌边加入胶体泥浆,搅拌成泥团,捏合成团;将泥团螺旋挤出切断,再进行真空练泥,过滤后切断陈腐,真空挤出成型,干燥,得到陶瓷平板膜支撑体生坯;将陶瓷平板膜支撑体生坯高温烧成,得到陶瓷平板膜支撑体。本发明提供的陶瓷平板膜支撑体的制备方法,所制备的支撑体用于陶瓷平板膜后,提高了陶瓷平板膜的抗弯强度、断裂韧性,进而延长了陶瓷平板膜的使用寿命。
Description
技术领域
本发明属于陶瓷制品的制备技术领域,具体涉及陶瓷平板膜支撑体及其制备方法与在陶瓷平板膜中的应用。
背景技术
陶瓷平板膜,具有热稳定性好、化学稳定性高、渗透通量高等优势,尤其在污水过滤中,效果好,因此在环境工业中应用广泛。陶瓷平板膜是由支撑体和膜层组成。
目前市场上常见的陶瓷平板膜产品,因为功能需求,造成陶瓷平板膜支撑体材料本身孔隙率较高而抗折强度较低。同时因为陶瓷平板膜支撑体的结构皆采用板状形式,薄壁多通道中空结构,所以陶瓷平板膜产品在污水过滤过程中,非常容易因污堵反冲洗或者长期曝气震动等原因,造成结构性胀裂、断裂,甚至爆裂等现象的发生,这就严重影响了陶瓷平板膜产品的使用寿命。
CN113385052A公开了一种氧化铝基陶瓷平板膜,其支撑体将平均粒径3~50μm的类球形氧化铝粉与造孔剂、粘结剂、水洗高岭土、煅烧滑石、烧结助剂(硅溶胶、纳米二氧化钛、纳米二氧化锆、纳米氧化锌、水洗高岭土、煅烧滑石中的两种或多种)在混料机中混合成粉料;将润滑剂、增塑剂溶液搅拌混合均匀,并在陶瓷泥料捏合机中,加入到混合好的粉料中,捏合练泥;再经过泥料陈腐,真空练泥,挤出成型,湿坯干燥等工序,获得待涂膜的支撑体生坯。但是此方法中烧结助剂难以分散均匀,烧结助剂不均匀就会造成支撑体烧结不均匀,使用过程中容易造成助剂少的部位强度低,从而反冲洗开裂,甚至炸裂。
CN111420562A公开了一种中空平板陶瓷膜的制备方法,用球形氧化铝、氧化镁、高岭土作为陶瓷骨料,然后陶瓷骨料与造孔剂、坯体粘结剂、聚乙二醇、水混合,均匀后倒入真空练泥机中进行练泥,最后放入密闭容器中陈腐,得到支撑本体泥料,经过挤压、干燥、烧结后,两面喷微孔膜浆料(微孔膜浆料是由球形氧化铝、高岭土、钾长石、聚乙二醇、硅溶胶、水经过球磨得到的),最后经烧成,得到中空平板陶瓷膜,其机械强度较高,提高膜的使用寿命。但是此方法制备的平板陶瓷膜的断裂韧性较差,烧结助剂分散性较差,在烧结中均匀性差,易开裂。
发明内容
本发明要解决的技术问题是克服现有技术存在的上述缺陷,提供一种陶瓷平板膜支撑体的制备方法,所制备的支撑体用于陶瓷平板膜后,提高了陶瓷平板膜的抗弯强度、断裂韧性,进而延长了陶瓷平板膜的使用寿命。
本发明所述的陶瓷平板膜支撑体的制备方法,包括以下步骤:
(1)将刚玉骨料、莫来石纤维、氧化锆、高岭土、粘合剂、造孔剂,干混均匀,得到混合料;
(2)制备胶体泥浆:向水中,加入无机氧化物,再加入纤维素、分散剂、PVA胶体,1500-2000r/min研磨2-4h,,得到胶体泥浆;
(3)向混合料中,边搅拌边加入胶体泥浆,搅拌成泥团,捏合30-50min,捏合成平均直径20-50cm的泥团;
(4)将泥团螺旋挤出切断,再进行真空练泥,过滤后切断陈腐,真空挤出成型,干燥,得到陶瓷平板膜支撑体生坯;
(5)将陶瓷平板膜支撑体生坯高温烧成,得到陶瓷平板膜支撑体。
步骤(1)的刚玉骨料的粒径为5-10μm;莫来石纤维的长径比为100-150;氧化锆为粒径20-100nm的四方型氧化锆微粉;粘合剂为粉状纤维素,其粘度为80000mPa·s-200000mPa·s,粒度范围为120-300目;高岭土为8000目的高岭土。
步骤(1)中混合料,按照重量份数,包括:刚玉骨料200份;莫来石纤维2-5份;氧化锆3-6份;高岭土8-12份;粘合剂4-6份;造孔剂7-12份。
造孔剂为4000-8000目的碳黑粉末、1000-2000目的淀粉、1000-2000目的硬脂酸铝中的一种。
步骤(2)的胶体泥浆,按照重量份数,包括:水150份;无机氧化物3.5-7.5份;羧甲基纤维素1-2份;分散剂0.5-1.5份;PVA胶体20-30份。
分散剂为三聚磷酸钠、木质素磺酸钠、CNF中的一种。
无机氧化物是由以下原料,按照重量份数混合而成的:氧化钛0.5-1.5份;氧化钇1-2份;氧化钙2-4份。
PVA胶体的制备方法为:按照重量份,将100份水,加热至70-100℃,再加入7-9份PVA细粉,保温1.9-2.2h,熬至均匀透亮,得到PVA胶体。PVA细粉的粒径为120目-300目。
步骤(3)的混合料和胶体泥浆按照重量份数添加,分别为600份混合料,130-150份胶体泥浆。
步骤(4)的陈腐温度为15-30℃,湿度为50-85%,时间为2-4天,干燥温度为120-180℃。
步骤(5)的高温烧成温度为1400-1550℃,时间为4-8h。
一种陶瓷平板膜支撑体是由所述的陶瓷平板膜支撑体的制备方法制得的。
一种所述的陶瓷平板膜支撑体的应用,在陶瓷平板膜支撑体喷涂膜层,干燥、1250-1350℃烧成,得到陶瓷平板膜。
具体的,所述的陶瓷平板膜的制备方法,包括以下步骤:
(1)将5-10μm刚玉骨料200份、长径比为100-150莫来石纤维2-5份、20-100nm的四方型氧化锆3-6份、8000目的高岭土8-12份、粘度为80000mPa·s-200000mPa·s的粒径120-300目的纤维素粉末4-6份、造孔剂7-12份,在干式混料机混合均匀,得到混合料。
(2)制备胶体泥浆:向高速搅拌磨中加入150份纯水,加入氧化钛0.5-1.5份、氧化钇1-2份、氧化钙2-4份,再加入羧甲基纤维素1-2份、分散剂0.5-1.5份、PVA胶体20-30份,1500-2000r/min研磨2-4h,混合成均匀的流动性极佳的泥浆,得到胶体泥浆;
所述的PVA胶体的制备方法为:按照重量份,向水浴熬胶罐中加入100份纯水,加热至70-100℃,再加入7-9份PVA细粉,保温1.9-2.2h,熬至均匀透亮,得到PVA胶体。
(3)将600份混合料释放到湿混的捏合机中,边搅拌边加入130-150份胶体泥浆,逐步搅拌成泥团,捏合30-50min,捏合成平均直径20-50cm的泥团。
(4)开启捏合机自带的螺旋挤出,将泥团由底部逐渐挤出,在出口切成宽度10-15cm,重3-5kg的泥块,自动传送到真空滤泥机之中,进行真空练泥过滤6-8次,最高过滤精度100目,切断后在温度为15-30℃,湿度为50-85%陈腐2-4天,使用真空挤出机真空挤出成型,120-180℃干燥,得到陶瓷平板膜支撑体生坯。
(5)将陶瓷平板膜支撑体生坯,以5-10片一摞,码窑到高温窑炉中,在1400-1550℃高温烧成4-8h,冷却得到陶瓷平板膜支撑体。
(6)在陶瓷平板膜支撑体喷涂膜层,干燥、1250-1350℃烧成,得到陶瓷平板膜。
本发明的陶瓷平板膜的制备方法,首先将无机氧化物氧化钛、氧化钇、氧化钙为复合型烧结助剂,与羧甲基纤维素、分散剂、PVA胶体混和,制备于胶体泥浆中,并进行研磨混合,然后与刚玉骨料、莫来石纤维、氧化锆等混合料混合,捏合为泥团,再进行练泥、陈腐、干燥、烧成处理,解决了支撑体中烧结助剂分布不均匀的问题,进一步解决陶瓷平板膜在使用过程中容易造成助剂少的部位强度低,从而反冲洗开裂,甚至炸裂的问题。
与现有技术相比,本发明具有的有益效果是:
(1)采用本发明的方法制备的陶瓷平板膜,提高了抗弯强度、断裂韧性的性能。
(2)采用本发明的方法制备的陶瓷平板膜,降低了堵塞后反冲洗过程的开裂、爆裂风险。
(3)采用本发明的方法制备的陶瓷平板膜,使用寿命长。
具体实施方式
下面结合具体实施例对本发明作进一步说明。
以下实施例和对比例所采用的原料或者助剂均为正常市售产品,其中购买的刚玉骨料的粒径为5-10μm;莫来石纤维的长径比为100-150;氧化锆为20-100nm的四方型氧化锆;高岭土为8000目;纤维素粉末的粘度为80000mPa·s-200000mPa·s,粒径为120-300目;PVA细粉的粒径为120目-300目。以下所述的份或重量份均以质量计。
其所采用的高速搅拌磨、捏合机、干式混料机等均属于现有技术的应用,故不再论述。
实施例1
所述的陶瓷平板膜的制备方法,包括以下步骤:
(1)将刚玉骨料200份、莫来石纤维4份、氧化锆5份、高岭土10份、纤维素粉末5份、4000-8000目的碳黑粉末9份,在干式混料机混合均匀,得到混合料。
(2)制备胶体泥浆:向高速搅拌磨中加入150份纯水,加入氧化钛1份、氧化钇1份、氧化钙3份,再加入羧甲基纤维素1份、三聚磷酸钠1份、PVA胶体25份,2000r/min研磨3h,混合成均匀的流动性极佳的泥浆,得到胶体泥浆;
所述的PVA胶体的制备方法为:按照重量份,向水浴熬胶罐中加入100份纯水,加热至90℃,再加入8份PVA细粉,保温2.0h,熬至均匀透亮,得到PVA胶体。
(3)将600份混合料释放到湿混的捏合机中,边搅拌边加入140份胶体泥浆,逐步搅拌成泥团,捏合40min,捏合成平均直径20-50cm的泥团。
(4)开启捏合机自带的螺旋挤出,将泥团由底部逐渐挤出,在出口切成宽度14cm,重4kg的泥块,自动传送到真空滤泥机之中,进行真空练泥过滤7次,过滤精度100目,切断后在温度为20℃,湿度为70%陈腐3天,使用真空挤出机真空挤出成型,160℃干燥,得到陶瓷平板膜支撑体生坯。
(5)将陶瓷平板膜支撑体生坯,以8片一摞,码窑到高温窑炉中,在1500℃高温烧成6h,冷却得到陶瓷平板膜支撑体。
(6)在陶瓷平板膜支撑体喷涂膜层,干燥、1300℃烧成,得到陶瓷平板膜。
实施例2
所述的陶瓷平板膜的制备方法,包括以下步骤:
(1)将刚玉骨料200份、莫来石纤维5份、氧化锆3份、高岭土8份、纤维素粉末4份、1000-2000目的硬脂酸铝12份,在干式混料机混合均匀,得到混合料。
(2)制备胶体泥浆:向高速搅拌磨中加入150份纯水,加入氧化钛1.5份、氧化钇1份、氧化钙4份,再加入羧甲基纤维素1份、CNF0.5份、PVA胶体30份,1800r/min研磨2h,混合成均匀的流动性极佳的泥浆,得到胶体泥浆;
所述的PVA胶体的制备方法为:按照重量份,向水浴熬胶罐中加入100份纯水,加热至100℃,再加入9份PVA细粉,保温1.9h,熬至均匀透亮,得到PVA胶体。
(3)将600份混合料释放到湿混的捏合机中,边搅拌边加入130份胶体泥浆,逐步搅拌成泥团,捏合30min,捏合成平均直径50cm的泥团。
(4)开启捏合机自带的螺旋挤出,将泥团由底部逐渐挤出,在出口切成宽度15cm,重5kg的泥块,自动传送到真空滤泥机之中,进行真空练泥过滤8次,过滤精度100目,切断后在温度为30℃,湿度为50%陈腐4天,使用真空挤出机真空挤出成型,180℃干燥,得到陶瓷平板膜支撑体生坯。
(5)将陶瓷平板膜支撑体生坯,以5片一摞,码窑到高温窑炉中,在1400℃高温烧成8h,冷却得到陶瓷平板膜支撑体。
(6)在陶瓷平板膜支撑体喷涂膜层,干燥、1250℃烧成,得到陶瓷平板膜。
实施例3
所述的陶瓷平板膜的制备方法,包括以下步骤:
(1)将刚玉骨料200份、莫来石纤维2份、氧化锆6份、高岭土12份、纤维素粉末6份、1000-2000目的淀粉7份,在干式混料机混合均匀,得到混合料。
(2)制备胶体泥浆:向高速搅拌磨中加入150份纯水,加入氧化钛0.5份、氧化钇2份、氧化钙2份,再加入羧甲基纤维素2份、木质素磺酸钠1.5份、PVA胶体20份,1500r/min研磨4h,混合成均匀的流动性极佳的泥浆,得到胶体泥浆;
所述的PVA胶体的制备方法为:按照重量份,向水浴熬胶罐中加入100份纯水,加热至70℃,再加入7份PVA细粉,保温2.2h,熬至均匀透亮,得到PVA胶体。
(3)将600份混合料释放到湿混的捏合机中,边搅拌边加入150份胶体泥浆,逐步搅拌成泥团,捏合30min,捏合成平均直径20-50cm的泥团。
(4)开启捏合机自带的螺旋挤出,将泥团由底部逐渐挤出,在出口切成宽度10cm,重3kg的泥块,自动传送到真空滤泥机之中,进行真空练泥过滤6次,过滤精度100目,切断后在温度为15℃,湿度为85%陈腐2天,使用真空挤出机真空挤出成型,120℃干燥,得到陶瓷平板膜支撑体生坯。
(5)将陶瓷平板膜支撑体生坯,以10片一摞,码窑到高温窑炉中,在1550℃高温烧成4h,冷却得到陶瓷平板膜支撑体。
(6)在陶瓷平板膜支撑体喷涂膜层,干燥、1350℃烧成,得到陶瓷平板膜。
实施例4
所述的陶瓷平板膜的制备方法,包括以下步骤:
(1)将刚玉骨料200份、莫来石纤维3份、氧化锆5份、高岭土9份、纤维素粉末4份、1000-2000目的淀粉7份,在干式混料机混合均匀,得到混合料。
(2)制备胶体泥浆:向高速搅拌磨中加入150份纯水,加入氧化钛1.5份、氧化钇2份、氧化钙4份,再加入羧甲基纤维素2份、三聚磷酸钠0.5份、PVA胶体30份,2000r/min研磨3h,混合成均匀的流动性极佳的泥浆,得到胶体泥浆;
所述的PVA胶体的制备方法为:按照重量份,向水浴熬胶罐中加入100份纯水,加热至90℃,再加入9份PVA细粉,保温2.0h,熬至均匀透亮,得到PVA胶体。
(3)将600份混合料释放到湿混的捏合机中,边搅拌边加入145份胶体泥浆,逐步搅拌成泥团,捏合50min,捏合成平均直径20-50cm的泥团。
(4)开启捏合机自带的螺旋挤出,将泥团由底部逐渐挤出,在出口切成宽度12cm,重4kg的泥块,自动传送到真空滤泥机之中,进行真空练泥过滤8次,过滤精度100目,切断后在温度为25℃,湿度为65%陈腐4天,使用真空挤出机真空挤出成型,160℃干燥,得到陶瓷平板膜支撑体生坯。
(5)将陶瓷平板膜支撑体生坯,以10片一摞,码窑到高温窑炉中,在1480℃高温烧成6h,冷却得到陶瓷平板膜支撑体。
(6)在陶瓷平板膜支撑体喷涂膜层,干燥、1300℃烧成,得到陶瓷平板膜。
实施例5
所述的陶瓷平板膜的制备方法,包括以下步骤:
(1)将刚玉骨料200份、莫来石纤维5份、氧化锆6份、高岭土12份、纤维素粉末4份、1000-2000目的淀粉12份,在干式混料机混合均匀,得到混合料。
(2)制备胶体泥浆:向高速搅拌磨中加入150份纯水,加入氧化钛1份、氧化钇1.5份、氧化钙3.5份,再加入羧甲基纤维素1.5份、三聚磷酸钠1份、PVA胶体25份,1500r/min研磨3h,混合成均匀的流动性极佳的泥浆,得到胶体泥浆;
所述的PVA胶体的制备方法为:按照重量份,向水浴熬胶罐中加入100份纯水,加热至85℃,再加入9份PVA细粉,保温2h,熬至均匀透亮,得到PVA胶体。
(3)将600份混合料释放到湿混的捏合机中,边搅拌边加入145份胶体泥浆,逐步搅拌成泥团,捏合50min,捏合成平均直径20-50cm的泥团。
(4)开启捏合机自带的螺旋挤出,将泥团由底部逐渐挤出,在出口切成宽度12cm,重3.5kg的泥块,自动传送到真空滤泥机之中,进行真空练泥过滤8次,过滤精度100目,切断后在温度为30℃,湿度为75%陈腐3天,使用真空挤出机真空挤出成型,170℃干燥,得到陶瓷平板膜支撑体生坯。
(5)将陶瓷平板膜支撑体生坯,以8片一摞,码窑到高温窑炉中,在1480℃高温烧成8h,冷却得到陶瓷平板膜支撑体。
(6)在陶瓷平板膜支撑体喷涂膜层,干燥、1300℃烧成,得到陶瓷平板膜。
对比例1
本对比例与实施例1相同,仅仅将步骤(1)的“莫来石纤维4份”去掉,其他制备与实施例1相同。
对比例2
本对比例与实施例1相同,仅仅将步骤(1)的“氧化锆5份”去掉,其他制备与实施例1相同。
对比例3
本对比例与实施例1相同,仅仅将步骤(2)的“加入氧化钛1份、氧化钇1份、氧化钙3份”替换为“加入氧化钛4份、氧化钙3份”,其他制备与实施例1相同。
对比例4
本对比例与实施例1相同,仅仅将步骤(2)的“加入氧化钛1份、氧化钇1份、氧化钙3份”替换为“加入氧化镁5份”,其他制备与实施例1相同。
对比例5
所述的陶瓷平板膜的制备方法,包括以下步骤:
(1)将刚玉骨料200份、莫来石纤维4份、氧化锆5份、高岭土10份、纤维素粉末5份、4000-8000目的碳黑粉末9份,在干式混料机混合均匀,得到混合料。
(2)制备胶体泥浆:向高速搅拌磨中加入250份纯水,加入氧化钛1份、氧化钇1份、氧化钙3份,再加入羧甲基纤维素1份、三聚磷酸钠1份、PVA细粉25份,然后加入PVA细粉,2000r/min研磨3h,混合成均匀的流动性极佳的泥浆,得到胶体泥浆。
(3)将600份混合料释放到湿混的捏合机中,边搅拌边加入140份胶体泥浆,逐步搅拌成泥团,捏合40min,捏合成平均直径20-50cm的泥团。
(4)开启捏合机自带的螺旋挤出,将泥团由底部逐渐挤出,在出口切成宽度14cm,重4kg的泥块,自动传送到真空滤泥机之中,进行真空练泥过滤7次,过滤精度100目,切断后在温度为20℃,湿度为70%陈腐3天,使用真空挤出机真空挤出成型,160℃干燥,得到陶瓷平板膜支撑体生坯。
(5)将陶瓷平板膜支撑体生坯,以8片一摞,码窑到高温窑炉中,在1500℃高温烧成6h,冷却得到陶瓷平板膜支撑体。
(6)在陶瓷平板膜支撑体喷涂膜层,干燥、1300℃烧成,得到陶瓷平板膜。
对比例6
所述的陶瓷平板膜的制备方法,包括以下步骤:
(1)将刚玉骨料200份、莫来石纤维4份、氧化锆5份、高岭土10份、纤维素粉末5份、4000-8000目的碳黑粉末9份,在干式混料机混合均匀,再加入氧化钛1份、氧化钇1份、氧化钙3份,再加入羧甲基纤维素1份、三聚磷酸钠1份、PVA细粉25份,释放到湿混的捏合机中,边搅拌边加入150份纯水,2000r/min研磨3h,逐步搅拌成泥团,捏合40min,捏合成平均直径20-50cm的泥团。
(2)开启捏合机自带的螺旋挤出,将泥团由底部逐渐挤出,在出口切成宽度14cm,重4kg的泥块,自动传送到真空滤泥机之中,进行真空练泥过滤7次,过滤精度100目,切断后在温度为20℃,湿度为70%陈腐3天,使用真空挤出机真空挤出成型,160℃干燥,得到陶瓷平板膜支撑体生坯。
(3)将陶瓷平板膜支撑体生坯,以8片一摞,码窑到高温窑炉中,在1500℃高温烧成6h,冷却得到陶瓷平板膜支撑体。
(4)在陶瓷平板膜支撑体喷涂膜层,干燥、1300℃烧成,得到陶瓷平板膜。
将以上实施例和对比例制备的陶瓷平板膜,进行抗弯强度和断裂韧性的检测,其检测结果如表1所示。
表1检测结果
当然,上述内容仅为本发明的较佳实施例,不能被认为用于限定对本发明的实施例范围。本发明也并不仅限于上述举例,本技术领域的普通技术人员在本发明的实质范围内所做出的均等变化与改进等,均应归属于本发明的专利涵盖范围内。
Claims (10)
1.一种陶瓷平板膜支撑体的制备方法,其特征在于:包括以下步骤:
(1)将刚玉骨料、莫来石纤维、氧化锆、高岭土、粘合剂、造孔剂,干混均匀,得到混合料;
(2)制备胶体泥浆:向水中,加入无机氧化物,再加入羧甲基纤维素、分散剂、PVA胶体,1500-2000r/min研磨2-4h,得到胶体泥浆;
(3)向混合料中,边搅拌边加入胶体泥浆,搅拌成泥团,捏合30-50min,捏合成平均直径20-50cm的泥团;
(4)将泥团螺旋挤出切断,再进行真空练泥,过滤后切断陈腐,真空挤出成型,干燥,得到陶瓷平板膜支撑体生坯;
(5)将陶瓷平板膜支撑体生坯高温烧成,得到陶瓷平板膜支撑体。
2.根据权利要求1所述的陶瓷平板膜支撑体的制备方法,其特征在于:步骤(1)的刚玉骨料的粒径为5-10μm;莫来石纤维的长径比为100-150;氧化锆为粒径20-100nm的四方型氧化锆;粘合剂为粉状纤维素。
3.根据权利要求1所述的陶瓷平板膜支撑体的制备方法,其特征在于:步骤(1)中混合料,按照重量份数,包括:刚玉骨料200份;莫来石纤维2-5份;氧化锆3-6份;高岭土8-12份;粘合剂4-6份;造孔剂7-12份。
4.根据权利要求1所述的陶瓷平板膜支撑体的制备方法,其特征在于:步骤(2)的胶体泥浆,按照重量份数,包括:水150份;无机氧化物3.5-7.5份;羧甲基纤维素1-2份;分散剂0.5-1.5份;PVA胶体20-30份。
5.根据权利要求4所述的陶瓷平板膜支撑体的制备方法,其特征在于:无机氧化物是由以下原料,按照重量份数混合而成的:氧化钛0.5-1.5份;氧化钇1-2份;氧化钙2-4份。
6.根据权利要求1所述的陶瓷平板膜支撑体的制备方法,其特征在于:PVA胶体的制备方法为:按照重量份,将100份水,加热至70-100℃,再加入7-9份PVA细粉,保温1.9-2.2h,熬至均匀透亮,得到PVA胶体。
7.根据权利要求1所述的陶瓷平板膜支撑体的制备方法,其特征在于:步骤(3)的混合料和胶体泥浆按照重量份数添加,分别为600份混合料,130-150份胶体泥浆。
8.根据权利要求1所述的陶瓷平板膜支撑体的制备方法,其特征在于:步骤(5)的高温烧成温度为1400-1550℃,时间为4-8h。
9.一种陶瓷平板膜支撑体,其特征在于:是由权利要求1-8任一项所述的陶瓷平板膜支撑体的制备方法制得的。
10.一种权利要求9所述的陶瓷平板膜支撑体的应用,其特征在于:在陶瓷平板膜支撑体喷涂膜层,干燥、烧成,得到陶瓷平板膜。
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