CN115108847B - 一种碱式多孔陶瓷基体及其制备方法、电子烟雾化芯和电子烟 - Google Patents
一种碱式多孔陶瓷基体及其制备方法、电子烟雾化芯和电子烟 Download PDFInfo
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- CN115108847B CN115108847B CN202110297287.9A CN202110297287A CN115108847B CN 115108847 B CN115108847 B CN 115108847B CN 202110297287 A CN202110297287 A CN 202110297287A CN 115108847 B CN115108847 B CN 115108847B
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- 239000000919 ceramic Substances 0.000 title claims abstract description 102
- 239000011159 matrix material Substances 0.000 title claims abstract description 74
- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 46
- 238000000889 atomisation Methods 0.000 title abstract description 31
- 238000002360 preparation method Methods 0.000 title abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 56
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims abstract description 33
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910000484 niobium oxide Inorganic materials 0.000 claims abstract description 21
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 21
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims abstract description 19
- 238000005245 sintering Methods 0.000 claims description 44
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 27
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 24
- 239000011230 binding agent Substances 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 22
- 239000000395 magnesium oxide Substances 0.000 claims description 16
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 15
- 239000000292 calcium oxide Substances 0.000 claims description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 15
- 238000000498 ball milling Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims description 12
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 12
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 12
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 12
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 8
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 7
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- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 239000004927 clay Substances 0.000 claims description 2
- 229910052878 cordierite Inorganic materials 0.000 claims description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000010433 feldspar Substances 0.000 claims description 2
- 229910052900 illite Inorganic materials 0.000 claims description 2
- 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 description 2
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 2
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 claims description 2
- 239000010451 perlite Substances 0.000 claims description 2
- 235000019362 perlite Nutrition 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
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- 238000001694 spray drying Methods 0.000 description 9
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- 238000012360 testing method Methods 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 238000007599 discharging Methods 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 8
- 229910052739 hydrogen Inorganic materials 0.000 description 8
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- 229910002076 stabilized zirconia Inorganic materials 0.000 description 7
- 239000000758 substrate Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 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 description 3
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
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- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009863 impact test Methods 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- HFLAMWCKUFHSAZ-UHFFFAOYSA-N niobium dioxide Chemical compound O=[Nb]=O HFLAMWCKUFHSAZ-UHFFFAOYSA-N 0.000 description 2
- BFRGSJVXBIWTCF-UHFFFAOYSA-N niobium monoxide Chemical compound [Nb]=O BFRGSJVXBIWTCF-UHFFFAOYSA-N 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- DUSBUJMVTRZABV-UHFFFAOYSA-M [O-2].O[Nb+4].[O-2] Chemical compound [O-2].O[Nb+4].[O-2] DUSBUJMVTRZABV-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明提供了一种碱式多孔陶瓷基体,以所述碱式多孔陶瓷基体的总重量为基准,包括:陶瓷粉体45~98.1份、助烧氧化物0.4~14份、碱金属氧化物1~15份、铌氧化物0.0005~0.25份和钇稳定的锆氧化物0.1~10份。同时,本发明还公开了上述碱式多孔陶瓷基体的制备方法、包括上述碱式多孔陶瓷基体的电子烟雾化芯和电子烟。本发明提供的碱式多孔陶瓷基体其主要应用于电子烟雾化芯上,保证了电子烟雾化芯具有较好的强度和韧性,当在碱式多孔陶瓷基体表面印刷导电层时,碱式多孔陶瓷基体与导电层具有更好的结合强度。
Description
技术领域
本发明属于电子烟结构技术领域,具体涉及一种碱式多孔陶瓷基体及其制备方法、电子烟雾化芯和电子烟。
背景技术
现有制备电子烟的过程中,需要在多孔陶瓷基体上设置加热体,多孔陶瓷基体上设置加热体的方式可以是将金属丝埋设在多孔陶瓷基体中,也可以是通过在多孔陶瓷基体上丝印导电层,同时需要将电极引线和多孔陶瓷基体烧结在一起,使得加热体与电极连接,而电极引线在烧结时的收缩率较大,如果多孔陶瓷的韧性不够,电极引线的收缩会将电极引线从陶瓷坯体结合处扯掉脱落,如何保证多孔陶瓷基体在满足韧性强度的要求下,同时具有与印刷导电层具有较高的结合强度,为本领域亟需解决的一个技术问题。
发明内容
针对上述问题,本发明提供了一种碱式多孔陶瓷基体及其制备方法、电子烟雾化芯和电子烟。
本发明解决上述技术问题所采用的技术方案如下:
一个方面,本发明提供了一种碱式多孔陶瓷基体,以所述碱式多孔陶瓷基体的总重量为基准,包括:
陶瓷粉体45~98.1份、助烧氧化物0.4~14份、碱金属氧化物1~15份、铌氧化物0.0005~0.25份和钇稳定的锆氧化物0.1~10份。
可选的,所述碱式多孔陶瓷基体中所述碱金属氧化物的含量为1.6~12份,所述铌氧化物的含量为0.01~0.15份,所述钇稳定的锆氧化物的含量为1~3份。
可选的,以所述碱式多孔陶瓷基体的总重量为基准,所述碱金属氧化物包括0.5~8份的氧化钠和0.5~7份的氧化钾。
可选的,所述铌氧化物包括五氧化二铌。
可选的,所述钇稳定的锆氧化物的比表面积为15-20m2/g,中值粒径为0.1-0.15um。
可选的,以所述碱式多孔陶瓷基体的总重量为基准,所述助烧氧化物包括以下重量组分:
镁氧化物0.2~7份和钙氧化物0.2~7份。
另一个方面,本发明提供了如上所述的碱式多孔陶瓷基体的制备方法,包括以下操作步骤:
将陶瓷粉体、助烧氧化物、碱金属氧化物、铌氧化物和钇稳定的锆氧化物按重量份数配比混合进行球磨,干燥得到复合粉体;
将复合粉体与造孔剂和粘结剂混合成型得到坯体;
将坯体进行烧结去除粘结剂和造孔剂得到碱式多孔陶瓷基体。
另一个方面,本发明提供一种碱式多孔陶瓷基体,由上述方法制备得到。
另一个方面,本发明提供了一种电子烟雾化芯,包括如上所述的碱式多孔陶瓷基体以及位于碱式多孔陶瓷基体表面的导电层。
另一个方面,本发明提供了一种电子烟,包括如上所述的电子烟雾化芯。
根据本发明提供的碱式多孔陶瓷基体,一方面保证了多孔陶瓷体的结构强度,防止了电极引线在烧结时出现收缩导致陶瓷基体脱落,另一方面使得陶瓷基体与印刷导电涂层的结合性能更强。
具体实施方式
为了使本发明所解决的技术问题、技术方案及有益效果更加清楚明白,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。
本发明实施例提供了一种碱式多孔陶瓷基体,以所述碱式多孔陶瓷基体的总重量为基准,包括:
陶瓷粉体45~98.1份、助烧氧化物0.4~14份、碱金属氧化物1~15份、铌氧化物0.0005~0.25份和钇稳定的锆氧化物0.1~10份。
本申请的发明人在实验过程中偶然发现,将碱金属氧化物、铌氧化物以及钇稳定的锆氧化物共同用于陶瓷雾化芯的陶瓷基体的制备中,制备得到的多孔陶瓷基体,一方面,不仅陶瓷基体的韧性强度得到了提高,另一方面,当通过丝网印刷的方式在陶瓷基体上印刷导电涂层通过烧结得到导电层时,陶瓷基体与导电层的结合强度具有一定的改善。
在优选的实施例中,所述碱金属氧化物的含量为1.6~12份,所述铌氧化物的含量为0.01~0.15份,所述钇稳定的锆氧化物的含量为1~3份。
根据本申请的实施例,所述钇稳定的锆氧化物为物相是四方相的氧化钇稳定氧化锆。
在一些实施例中,所述碱金属氧化物包括以下重量组分:
氧化钠0.5~8份和氧化钾0.5~7份。
在优选的实施例中,氧化钠和氧化钾的添加量为:氧化钠0.8~7份和氧化钾0.8~5份。
在一些实施例中,所述铌氧化物包括一氧化铌、二氧化铌、三氧化二铌和五氧化二铌中的一种或多种。
在优选的实施例中,所述铌氧化物选自于五氧化二铌。
五氧化二铌为铌的高价态氧化物,性质稳定,制备难度和成本相对于其他铌氧化物较低,可在空气中灼烧金属铌或由铌酸脱水制备。
在一些实施例中,所述钇稳定的锆氧化物的比表面积为15-20m2/g,粒径中值为0.1-0.15um。
在一些实施例中,所述钇稳定的锆氧化物中包括有2~4mol%的氧化钇。
所述钇稳定的锆氧化物在烧结的过程中形成四方晶相,所述氧化钇起到稳定其四方晶相的作用,提高力学性能,需要说明的是,单独加入氧化钇对防止电极引线脱落的效果提升改善有限,在本发明的技术方案中,所述钇稳定的锆氧化物仅在加入铌氧化物后才能达到防止电极引线脱落所要求的材料韧性。
所述陶瓷粉体在所述碱式多孔陶瓷基体中起到形成主体骨架的作用,在一些实施例中,所述陶瓷粉体包括铝氧化物、硅氧化物、硅藻土、长石、高岭土、蒙脱石、伊利石、堇青石、膨胀珍珠岩和黏土中的一种或多种。以上物质具有坚固、耐磨、耐高温、来源广泛,成本低廉的优点,作为陶瓷粉体时,确保了多孔陶瓷的强度和韧性。
在优选的实施例中,所述陶瓷粉体包括以下重量组分:
铝氧化物10~50份和硅氧化物35~85份。
在更优选的实施例中,铝氧化物和硅氧化物的添加量为:铝氧化物18~50份和硅氧化物40~77份。
采用铝氧化物和硅氧化物作为陶瓷粉体,相比于其他材料,其物质纯度具有较好的可控性,从而有利于提高产品质量的一致性。其中铝氧化物为高温陶瓷,起到骨架支撑的作用,硅氧化物在烧结的过程在晶界形成低熔点的玻璃相,促进烧结,对铝氧化物起到粘结的作用。
在一些实施例中,以所述碱式多孔陶瓷基体的总重量为基准,所述助烧氧化物包括以下重量组分:
镁氧化物0.2~7份和钙氧化物0.2~7份。
在优选的实施例中,镁氧化物和钙氧化物的添加量为:镁氧化物0.5~5份和钙氧化物0.5~5份。
在所述陶瓷粉体中加入所述镁氧化物,主要起到微观结构稳定剂的作用,可以细化晶粒,大大减小晶界能差,削弱晶粒生长的各向异性,抑制不连续的晶粒生长。
所述钙氧化物与所述镁氧化物相互配合,用于获得致密的显微组织和均匀细腻的晶粒。
本发明的另一实施例提供了如上所述的碱式多孔陶瓷基体的制备方法,包括以下操作步骤:
将陶瓷粉体、助烧氧化物、碱金属氧化物、铌氧化物和钇稳定的锆氧化物按重量份数配比混合进行球磨,干燥得到复合粉体;
将复合粉体与造孔剂和粘结剂混合成型得到坯体;
将坯体进行烧结去除粘结剂和造孔剂得到碱式多孔陶瓷基体。
具体的,以干压成型为例,所述碱式多孔陶瓷基体的制备方法包括以下操作步骤:
①先将陶瓷粉体、助烧氧化物、碱金属氧化物、铌氧化物和钇稳定的锆氧化物按照重量比例在球磨罐中加水球磨,然后再在砂磨机中加入分散剂和水砂磨,最后加入造孔剂和粘结剂搅拌,形成喷雾用浆料;
②将浆料送入喷雾塔进行喷雾干燥形成用来干压的流动性较强的球形粉体,之后将球形粉体干压成型(吨位200吨的压机使用8MPa的油压压强);
③在1000-1300度下烧结1-2小时,打磨抛光后即制成最终样品。
需要说明的是,以上干压成型仅是所述碱式多孔陶瓷基体的优选实施例,用于对本发明进行说明,并不用于对本发明进行限制,在其他实施例中,本领域技术人员可采用其他现有的成型方式进行所述碱式多孔陶瓷基体的制备,如等静压成型、注射成型、热压铸成型等成型方式。
本发明的另一实施例提供了如上述方法制备得到的碱式多孔陶瓷基体。
本发明的另一实施例提供了一种电子烟雾化芯,所述电子烟雾化芯包括碱式多孔陶瓷基体、导电层和电极引线,所述导电层位于所述碱式多孔陶瓷基体表面,所述电极引线插入所述碱式多孔陶瓷基体并电连接所述导电层;所述导电层通过将导电浆料丝印在碱式多孔陶瓷基体表面后经烧结得到。
在制备所述电子烟雾化芯时,所述导电层通过导电浆料丝印成型,所述电极引线插入所述碱式多孔陶瓷基体预设的雾化芯孔中后,在还原性气体炉中烧结固定,还原性气体选自氨气或氢气。
将所述碱式多孔陶瓷基体应用于电子烟雾化芯,在制备过程中,能够有效提高电极引线和所述碱式多孔陶瓷基体的结合强度,避免电极引线在烧结过程中脱落,同时又保证了丝印的效果,提高了导电层的结合力。
本发明的另一实施例提供了一种电子烟,包括如上所述的电子烟雾化芯。以下通过实施例对本发明进行进一步的说明。
实施例1
提供一种碱式多孔陶瓷基体组合物,配料如下:
粉体:其中氧化铝加入25g,氧化硅加入66.48g,氧化镁加入1.5g,氧化钙加入3g,氧化钠加入1g,氧化钾加入1g,五氧化二铌加入0.02g,3mol%钇稳定的氧化锆加入2g。
造孔剂:PMMA(聚甲基丙烯酸甲酯)加入26g。
PVA粘结剂(聚乙烯醇)加入10g。
水分加入100g。
具体制备方法如下:
先将粉体在球磨罐里混料2小时,出料烘干后,进入烧结炉烧制1000℃保温1小时。烧成的粉破碎后,加入作为造孔剂的PMMA 26g,PVA粘结剂10g以及水100g,搅拌混合2小时,进行喷雾干燥,干燥后的粉体干压成型成电子烟雾化芯形状的坯体,之后进炉烧制1140℃保温1.5h。烧成的坯体丝印导电浆料并插入电极引线进入氢气炉烧制,烧制温度为1050℃,得到电子烟雾化芯。
实施例2
提供一种碱式多孔陶瓷基体组合物,配料如下:
粉体:其中氧化铝加入18g,氧化硅加入73.48g,氧化镁加入1.5g,氧化钙加入3g,氧化钠加入0.5g,氧化钾加入0.5g,五氧化二铌加入0.02g,3mol%钇稳定的氧化锆加入2g。
造孔剂:PMMA(聚甲基丙烯酸甲酯)加入26g。
PVA粘结剂(聚乙烯醇)加入10g。
水分加入100g。
具体制备方法如下:
先将粉体在球磨罐里混料2小时,出料烘干后,进入烧结炉烧制1000℃保温1小时。烧成的粉破碎后,加入作为造孔剂的PMMA 26g,PVA粘结剂10g以及水100g,搅拌混合2小时,进行喷雾干燥,干燥后的粉体干压成型成电子烟雾化芯形状的坯体,之后进炉烧制1140℃保温1.5h。烧成的坯体丝印导电浆料并插入电极引线进入氢气炉烧制,烧制温度为1050℃,得到电子烟雾化芯。
实施例3
提供一种碱式多孔陶瓷基体组合物,配料如下:
粉体:其中氧化铝加入50g,氧化硅加入41.48g,氧化镁加入1.5g,氧化钙加入3g,氧化钠加入2g,氧化钾加入2g,五氧化二铌加入0.02g,3mol%钇稳定的氧化锆加入2g。
造孔剂:PMMA(聚甲基丙烯酸甲酯)加入26g。
PVA粘结剂(聚乙烯醇)加入10g。
水分加入100g。
具体制备方法如下:
先将粉体在球磨罐里混料2小时,出料烘干后,进入烧结炉烧制1000℃保温1小时。烧成的粉破碎后,加入作为造孔剂的PMMA 26g,PVA粘结剂10g以及水100g,搅拌混合2小时,进行喷雾干燥,干燥后的粉体干压成型成电子烟雾化芯形状的坯体,之后进炉烧制1235℃保温1.5h。烧成的坯体丝印导电浆料并插入电极引线进入氢气炉烧制,烧制温度为1050℃,得到电子烟雾化芯。
实施例4
提供一种碱式多孔陶瓷基体组合物,配料如下:
粉体:其中氧化铝加入25g,氧化硅加入67.49g,氧化镁加入1.5g,氧化钙加入3g,氧化钠加入5g,氧化钾加入5g,五氧化二铌加入0.01g,3mol%钇稳定的氧化锆加入1g。
造孔剂:PMMA(聚甲基丙烯酸甲酯)加入26g。
PVA粘结剂(聚乙烯醇)加入10g。
水分加入100g。
具体制备方法如下:
先将粉体在球磨罐里混料2小时,出料烘干后,进入烧结炉烧制1000℃保温1小时。烧成的粉破碎后,加入作为造孔剂的PMMA 26g,PVA粘结剂10g以及水100g,搅拌混合2小时,进行喷雾干燥,干燥后的粉体干压成型成电子烟雾化芯形状的坯体,之后进炉烧制1170℃保温1.5h。烧成的坯体丝印导电浆料并插入电极引线进入氢气炉烧制,烧制温度为1050℃,得到电子烟雾化芯。
实施例5
提供一种碱式多孔陶瓷基体组合物,配料如下:
粉体:其中氧化铝加入25g,氧化硅加入65.35g,氧化镁加入1.5g,氧化钙加入3g,氧化钠加入7g,氧化钾加入8g,五氧化二铌加入0.15g,3mol%钇稳定的氧化锆加入3g。
造孔剂:PMMA(聚甲基丙烯酸甲酯)加入26g。
PVA粘结剂(聚乙烯醇)加入10g。
水分加入100g。
具体制备方法如下:
先将粉体在球磨罐里混料2小时,出料烘干后,进入烧结炉烧制1000℃保温1小时。烧成的粉破碎后,加入作为造孔剂的PMMA 26g,PVA粘结剂10g以及水100g,搅拌混合2小时,进行喷雾干燥,干燥后的粉体干压成型成电子烟雾化芯形状的坯体,之后进炉烧制1100℃保温1.5h。烧成的坯体丝印导电浆料并插入电极引线进入氢气炉烧制,烧制温度为1050℃,得到电子烟雾化芯。
对比例1
提供一种多孔陶瓷基体组合物,配料如下:
粉体:其中氧化铝加入25g,氧化硅加入66.48g,氧化镁加入1.5g,氧化钙加入3g,氧化铋加入2g,五氧化二铌加入0.02g,3mol%钇稳定的氧化锆加入2g。
造孔剂:PMMA(聚甲基丙烯酸甲酯)加入26g。
PVA粘结剂(聚乙烯醇)加入10g。
水分加入100g。
具体制备方法如下:
先将粉体在球磨罐里混料2小时,出料烘干后,进入烧结炉烧制1000℃保温1小时。烧成的粉破碎后,加入作为造孔剂的PMMA 26g,PVA粘结剂10g以及水100g,搅拌混合2小时,进行喷雾干燥,干燥后的粉体干压成型成电子烟雾化芯形状的坯体,之后进炉烧制1070℃保温1.5h。烧成的坯体丝印导电浆料并插入电极引线进入氢气炉烧制,烧制温度为1050℃,得到电子烟雾化芯。
对比例2
提供一种多孔陶瓷基体组合物,配料如下:
粉体:其中氧化铝加入25g,氧化硅加入66.48g,氧化镁加入1.5g,氧化钙加入3g,氧化钠加入1g,氧化钾加入1g,3mol%钇稳定的氧化锆加入2g。
造孔剂:PMMA(聚甲基丙烯酸甲酯)加入26g。
PVA粘结剂(聚乙烯醇)加入10g。
水分加入100g。
具体制备方法如下:
先将粉体在球磨罐里混料2小时,出料烘干后,进入烧结炉烧制1000℃保温1小时。烧成的粉破碎后,加入作为造孔剂的PMMA 26g,PVA粘结剂10g以及水100g,搅拌混合2小时,进行喷雾干燥,干燥后的粉体干压成型成电子烟雾化芯形状的坯体,之后进炉烧制1140℃保温1.5h。烧成的坯体丝印导电浆料并插入电极引线进入氢气炉烧制,烧制温度为1050℃,得到电子烟雾化芯。
对比例3
提供一种多孔陶瓷基体组合物,配料如下:
粉体:其中氧化铝加入25g,氧化硅加入66.48g,氧化镁加入1.5g,氧化钙加入3g,氧化钠加入1g,氧化钾加入1g,五氧化二铌加入0.02g。
造孔剂:PMMA(聚甲基丙烯酸甲酯)加入26g。
PVA粘结剂(聚乙烯醇)加入10g。
水分加入100g。
具体制备方法如下:
先将粉体在球磨罐里混料2小时,出料烘干后,进入烧结炉烧制1000℃保温1小时。烧成的粉破碎后,加入作为造孔剂的PMMA 26g,PVA粘结剂10g以及水100g,搅拌混合2小时,进行喷雾干燥,干燥后的粉体干压成型成电子烟雾化芯形状的坯体,之后进炉烧制1170℃保温1.5h。烧成的坯体丝印导电浆料并插入电极引线进入氢气炉烧制,烧制温度为1050℃,得到电子烟雾化芯。
性能测试
对上述实施例1~5和对比例1~3制备得到的电子烟雾化芯进行如下性能测试:
导热率测试:依照标准ASTM 518的方式,使用热导率仪测试电子烟雾化芯的导热率。
强度测试:依照标准GB/T 6569-86的方式,使用万能试验机进行电子烟雾化芯的强度测试。
拉拔力测试:固定电子烟雾化芯,通过拉力计固定电极引线,将电极引线从电子烟雾化芯中扯下,记录所用的拉拔力。
陶瓷基体与导电层的结合强度测试:将电子烟雾化芯置于60度下加热两秒,再置于10度在冷却5秒,作为一次冷热冲击测试,当导电层出现脱落时,记录电子烟雾化芯的冷热冲击测试次数。
得到的测试结果填入表1。
表1
具体事例 | 强度(MPa) | 拉拔力(N) | 导热率(W/(mK)) | 冷热冲击次数 |
实施例1 | 52 | 11 | 1.3 | 12 |
实施例2 | 47 | 9 | 1.1 | 7 |
实施例3 | 49 | 10 | 1.5 | 10 |
实施例4 | 45 | 8 | 1.2 | 6 |
实施例5 | 50 | 10 | 1.4 | 11 |
对比例1 | 49 | 9 | 1.2 | 5 |
对比例2 | 36 | 4 | 1.3 | 11 |
对比例3 | 30 | 4 | 1.1 | 10 |
对比实施例1~5和对比例1的测试结果可以看出,相比于不添加碱金属氧化物的多孔陶瓷基体,采用本发明提供的添加碱金属氧化物、铌氧化物以及钇稳定的锆氧化物共同添加得到的碱式多孔陶瓷基体,其耐冷热冲击的次数更高,说明碱金属氧化物、铌氧化物以及钇稳定的锆氧化物的配合有利于改善碱式多孔陶瓷基体与导电层的结合强度。
对比实施例1~5和对比例2、3的测试结果可以看出,碱金属氧化物、铌氧化物以及钇稳定的锆氧化物共同添加能够有效提高碱式多孔陶瓷基体的材料强度和韧性,进而使得碱式多孔陶瓷基体与电极引线之间的结合强度有效提高,避免电极引线的脱落,当缺少其中的铌氧化物或钇稳定的锆氧化物时均会导致碱式多孔陶瓷基体的强度下降,进而引起电极引线的脱落。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。
Claims (10)
1.一种碱式多孔陶瓷基体,其特征在于,以所述碱式多孔陶瓷基体的总重量为基准,包括:
陶瓷粉体45~98.1份、助烧氧化物0.4~14份、碱金属氧化物1~15份、铌氧化物0.0005~0.25份和钇稳定的锆氧化物0.1~10份;
所述陶瓷粉体包括铝氧化物、硅氧化物、硅藻土、长石、高岭土、蒙脱石、伊利石、堇青石、膨胀珍珠岩和黏土中的一种或多种;
所述助烧氧化物包括以下重量组分:
镁氧化物0.2~7份和钙氧化物0.2~7份。
2.根据权利要求1所述的碱式多孔陶瓷基体,其特征在于,所述碱式多孔陶瓷基体中碱金属氧化物的含量为1.6~12份,所述铌氧化物的含量为0.01~0.15份,所述钇稳定的锆氧化物的含量为1~3份。
3.根据权利要求1所述的碱式多孔陶瓷基体,其特征在于,以所述碱式多孔陶瓷基体的总重量为基准,所述碱金属氧化物包括0.5~8份的氧化钠和0.5~7份的氧化钾。
4.根据权利要求1所述的碱式多孔陶瓷基体,其特征在于,所述铌氧化物包括五氧化二铌。
5.根据权利要求1所述的碱式多孔陶瓷基体,其特征在于,所述钇稳定的锆氧化物的比表面积为15-20m2/g,中值粒径为0.1-0.15um。
6.根据权利要求1所述的碱式多孔陶瓷基体,其特征在于,以所述碱式多孔陶瓷基体的总重量为基准,所述助烧氧化物包括以下重量组分:
镁氧化物0.2~7份和钙氧化物0.2~7份。
7.如权利要求1~6任意一项所述的碱式多孔陶瓷基体的制备方法,其特征在于,包括以下操作步骤:
将陶瓷粉体、助烧氧化物、碱金属氧化物、铌氧化物和钇稳定的锆氧化物按重量份数配比混合进行球磨,干燥得到复合粉体;
将复合粉体与造孔剂和粘结剂混合成型得到坯体;
将坯体进行烧结去除粘结剂和造孔剂得到碱式多孔陶瓷基体。
8.一种碱式多孔陶瓷基体,由权利要求7所述的方法制备得到。
9.一种电子烟雾化芯,其特征在于,包括权利要求1-6以及8中任意一项所述的碱式多孔陶瓷基体以及位于碱式多孔陶瓷基体表面的导电层。
10.一种电子烟,其特征在于,包括权利要求9所述的电子烟雾化芯。
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