CN107199014A - 一种高吸附性能的陶瓷组合物及其制备方法 - Google Patents
一种高吸附性能的陶瓷组合物及其制备方法 Download PDFInfo
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Abstract
本发明提供了一种高吸附性能的陶瓷组合物及其制备方法,所述高吸附性能的陶瓷组合物按重量百分比由以下组分制成:铁沸石9.3%‑74.5%,竹炭粉0.2%‑0.5%,发泡剂0.5%‑5%,电气石晶体微粒10%‑80%,粘土10%~80%。本发明制得的高吸附性能的陶瓷组合物具有较大的比表面积,能有效地吸附甲醛、苯等有害气体,净化空气质量,并且制备方法简单,适宜工业化生产。
Description
技术领域
本发明涉及复合陶瓷材料技术领域,尤其涉及一种高吸附性能的陶瓷组合物及其制备方法。
背景技术
电气石是以含硼为特征的铝、铁、钠、镁、锂的环状结构硅酸盐矿物,呈黑色或灰黑色,粗针状、束状或放射状结构。电气石具有特殊的热电性和压电性,有很高的远红外辐射和负离子释放能力,并含有多种对人体健康有益的微量元素,广泛应用在饮用水活性化、空气净化、污水处理、陶瓷、建材、日用化工、电子、纺织、保健用品、美容化妆品等领域。
竹炭具有丰富的蜂窝状微孔结构,这种微孔结构使竹炭具有庞大的比表面积,呈现异常优异的吸附能力,有吸附、过滤、抑菌、蓄热、调湿作用。竹炭含有人体需要的钙、钾、钠、镁等矿物质,还有电磁屏蔽、辐射远红外线、产生负离子、增加水质碱性等特殊功效,可用于吸潮除臭、消毒杀菌、改善居住环境。
石墨烯是一种由碳原子构成的单层片状结构的新材料,是目前世上最薄却最坚硬的纳米材料,具有独特的物理化学性质。石墨烯与有机污染物之间可形成非常强的络合能力,从而对有机污染物有很强的吸附能力。
半导体二氧化钛的光化学性能已使其可用于许多领域,如空气、水和流体的净化。以碳或其他杂原子掺杂的光催化剂也可用于具有散射光源的密封空间或区域。用于建筑、人行石板、混凝土墙或屋顶瓦上的涂料中时,它们可以明显增加对空气中污染物如氮氧化物、芳烃和醛类的分解。二氧化钛可制作成光催化剂,净化空气,消除车辆排放物中25%到45%的氮氧化物,可用于治理PM2.5悬浮颗粒物过高的空气污染。
电气石、石墨烯、二氧化钛和竹炭具有独特的吸附性能和环境净化功能,将其组合制成复合陶瓷材料,使它既有一定的机械强度又有良好的吸附性能和环境净化功能,可以广泛应用在炊具、餐具、茶具、食物容器、装饰工艺品和建筑装饰材料等领域,能够极大地提高了陶瓷行业产品的科技含量和经济价值。
经查询,目前在国内外已经有企业利用竹炭为添加材料制造各种竹炭陶瓷材料,但是在原料配方和制造工艺方面还有一定的局限性,影响了应用的效果。
例如:专利“竹基远红外复合材料及其制造方法”(公开号CN101333106A),权利要求书提出原料配比为竹炭50~95%;电气石0.5~30%;粘土1~10%;麦饭石0.5~20%;烧制工艺为氮气保护500~2000℃,1~5小时。专利“竹炭-电气石远红外复合材料及其制造方法”(公开号CN101486561A),权利要求书提出原料配比为竹炭40~50%;电气石40~60%;烧制工艺为电气石在500~700℃煅烧1~3小时,在真空环境下850~1000℃,1~5小时。专利“一种竹炭符合吸附剂及其制备方法”(公开号CN101632916A),权利要求书提出原料配比为竹炭20-90份;负离子矿物材料1-50份,硅藻土2-25份,粘接剂5-30份;烧制工艺为密封100-1300℃,1-2小时。专利“一种竹炭紫砂珠的制作方法”(公开号CN101311137A),权利要求书提出原料配比为竹炭10~30%;紫砂泥60~80%,原矿土10%;烧制工艺为1000~1180℃。专利“竹炭保健陶瓷砖的制造方法”(公开号CN101696117A),权利要求书提出原料配比为竹炭1份,陶瓷土1~3份;烧制工艺为坯体700~1250℃,冷却后上釉制品700~1250℃。专利“一种高吸附性能的电气石竹炭陶瓷及制备方法”(公开号CN103496945A)公开了一种以高温微晶竹炭粉、电气石晶体微粒为主要原料,粘土为辅料,经混合、成型、干燥和煅烧工艺制得,各组份的重量百分比为:竹炭粉10%~80%,电气石晶体微粒10~80%,粘土10~80%。
但是,这些专利公开的陶瓷组合物,其吸附性能还有待提高,缩小了其应用领域。
发明内容
本发明的目的是为克服现有技术的不足,提供一种高吸附性能的陶瓷组合物及其制备方法。所述高吸附性能的陶瓷组合物对污染物的吸附能力显著提高,能有效地吸附甲醛、苯等有害气体,净化空气质量,并且制备方法简单,适宜工业化生产。
所述高吸附性能是指相对于一般的吸附陶瓷材料,其吸附性能提高30-50%。
为达到此发明目的,本发明采用以下技术方案:
一种高吸附性能的陶瓷组合物,按重量百分比由如下原料制备得到:
作为优选的技术方案,本发明提供了一种高吸附性能的陶瓷组合物,按重量百分比由如下原料制备得到:
本发明的陶瓷组合物中铁沸石的重量百分比为9.3%-74.5%,如10%、20%、25%、35%、40%、55%、60%或70%,优选为20%-60%;竹炭粉的重量百分比为0.2%-0.5%,如0.25%、0.3%、0.35%、0.4%或0.45%,优选为0.3%-0.5%;发泡剂的重量百分比为0.5%-5%,如0.7%、0.9%、1.0%、2.0%、2.5%、3.0%、4.0%或4.5%,优选为2%-4%;电气石晶体微粒呃重量百分比为10%-80%,如15%、25%、30%、35%、40%、50%、60%、70%或75%,优选为15%-60%;粘土的重量百分比为10%-80%,如15%、25%、30%、35%、40%、50%、60%、70%或75%,优选为15%-50%。
所述的高温微晶竹炭粉为由竹炭经1200℃以上高温烧制,改变了微晶体的排列,形成的结晶化竹炭粉。竹炭粉平均粒径为30μm~100μm,如40μm、50μm、60μm、70μm、80μm或90μm。
所述的电气石材料为高纯电气石原矿,电气石结晶度≥95%,动态负离子数值≥500ions/cm3、波长4μm~14μm的远红外线辐射率≥90%。电气石粉平均粒径为10μm~50μm,如15μm、20μm、25μm、30μm、40μm或45μm。
所述的粘土可选自:高岭土、膨润土、漂白土或普通粘土中的任一种或至少两种的混合物。
所述的发泡剂粒径为0.5μm~20μm,如1μm、5μm、8μm、10μm、15μm或18μm。
优选地,所述发泡剂选自碳酸钙、碳酸镁或碳酸氢钠中的任意一种或至少两种的组合,典型但非限制性的组合如碳酸钙与碳酸镁,碳酸钙与碳酸氢钠,碳酸钙、碳酸镁与碳酸氢钠。
发泡剂半导体材料由于其自身的许多优良品质目前被广泛应用于光催化领域,其能够利用太阳光中紫外光的照射将有毒有害的物质分解,并且由于其自身具有润湿性,可以达到自我清洁的目的。上述高吸附性能的陶瓷组合物的制备方法,包括如下步骤:
(1)将铁沸石、竹炭粉、发泡剂、电气石晶体微粒和粘土按比例搅拌混合,研磨成泥料;
(2)将泥料置于真空炼泥机中炼泥两次以上,再放置24小时以上自然陈腐;
(3)将经过自然陈腐的泥料放入成型设备造型,得到成型坯料;
(4)将成型坯料自然风干,或置于烘箱在80~100℃的温度条件下烘干;
(5)将干燥的坯料置于窑炉中,在还原气氛缓慢升温至600~800℃煅烧,保温30~50分钟;
(6)将上述煅烧物自然冷却至室温,制得电气石竹炭陶瓷。
与现有技术相比,本发明的有益效果为:
1、本发明的陶瓷组合物吸附性好,能有效地吸附甲醛、苯等有害气体,净化空气质量,并且制备方法简单,适宜工业化生产;
2、本发明的陶瓷组合物其烧成收缩率低,抗折强度大;
3、本发明的陶瓷组合物结晶化竹炭微粒镶嵌在陶土基体中,保留原有竹炭材料以中孔为主的孔隙结构和类石墨化晶体结构;
附图说明
图1为本发明的陶瓷组合物的制备方法流程框图。
具体实施方式
实施例1:
按重量百分比配置原料:结晶化铁沸石9.3%、竹炭粉0.2%、发泡剂0.5%、电气石晶体微粒50%、粘土40%。本实施方式使用的结晶化铁沸石经1200℃以上高温烧制,铁沸石平均粒径为30μm~100μm。使用的电气石粉为高纯电气石原矿晶体,电气石结晶度≥95%,动态负离子数值≥500ions/cm3、波长4μm~14μm的远红外线辐射率≥90%。电气石粉平均粒径为10μm~50μm。经混合、成型、干燥,在还原气氛缓慢升温至600~800℃煅烧,制得陶瓷材料。
所述发泡剂选自碳酸钙。
实施例2:
按重量百分比配置原料:结晶化铁沸石74%、竹炭粉0.5%、发泡剂5%、电气石晶体微粒10%、粘土10.5%。本实施方式使用的结晶化铁沸石经1200℃以上高温烧制,铁沸石平均粒径为30μm~100μm。使用的电气石粉为高纯电气石原矿晶体,电气石结晶度≥95%,动态负离子数值≥500ions/cm3、波长4μm~14μm的远红外线辐射率≥90%。电气石粉平均粒径为10μm~50μm。经混合、成型、干燥,在还原气氛缓慢升温至600~800℃煅烧,制得陶瓷材料。
所述发泡剂选自碳酸镁。
实施例3:
按重量百分比配置原料:结晶化铁沸石25%、竹炭粉0.3%、发泡剂3%、电气石晶体微粒31.7%、粘土40%。本实施方式使用的结晶化铁沸石经1200℃以上高温烧制,铁沸石平均粒径为30μm~100μm。使用的电气石粉为高纯电气石原矿晶体,电气石结晶度≥95%,动态负离子数值≥500ions/cm3、波长4μm~14μm的远红外线辐射率≥90%。电气石粉平均粒径为10μm~50μm。经混合、成型、干燥,在还原气氛缓慢升温至600~800℃煅烧,制得陶瓷材料。
所述发泡剂选自碳酸氢钠。
实施例4:
按重量百分比配置原料:结晶化铁沸石40%、竹炭粉0.4%、发泡剂2.5%、电气石晶体微粒20%、粘土37.1%。本实施方式使用的结晶化铁沸石经1200℃以上高温烧制,铁沸石平均粒径为30μm~100μm。使用的电气石粉为高纯电气石原矿晶体,电气石结晶度≥95%,动态负离子数值≥500ions/cm3、波长4μm~14μm的远红外线辐射率≥90%。电气石粉平均粒径为10μm~50μm。经混合、成型、干燥,在还原气氛缓慢升温至600~800℃煅烧,制得装饰工艺品。
所述发泡剂选自碳酸钙、碳酸镁与碳酸氢钠的混合物。
吸附试验:
用面积相同并同时装修完的甲、乙两间卧室进行试验,甲卧室测得空气中有害物质的含量为:
乙卧室测得的空气中有害物质的含量为:
污染物 | 含量(mg/m3) |
游离甲醛 | 0.18 |
苯 | 0.10 |
氨 | 0.23 |
TVOC | 0.60 |
将甲乙两间卧室的门窗关闭,分别向甲乙两间卧室中放入实施例4和CN103496945A实施例4在相同条件下制得的陶瓷,经过15天后重新测得甲乙两间卧室空气中有害物质如下:
甲卧室测得的空气中有害物质的含量为:
污染物 | 含量(mg/m3) |
游离甲醛 | 0.10 |
苯 | 0.06 |
氨 | 0.15 |
TVOC | 0.35 |
乙卧室测得的空气中有害物质的含量为:
污染物 | 含量(mg/m3) |
游离甲醛 | 0.09 |
苯 | 0.09 |
氨 | 0.20 |
TVOC | 0.55 |
经过对比前后测得的空气里有害物质的含量,说明本发明的陶瓷组合物具有更强的污染物吸附能力。
申请人声明,本发明通过上述实施例来说明本发明的详细方法,但本发明并不局限于上述详细方法,即不意味着本发明必须依赖上述详细方法才能实施。所属技术领域的技术人员应该明了,对本发明的任何改进,对本发明产品各原料的等效替换及辅助成分的添加、具体方式的选择等,均落在本发明的保护范围和公开范围之内。
Claims (9)
1.一种高吸附性能的陶瓷组合物,其特征在于,按重量百分比由如下原料制备得到:
2.根据权利要求1所述的陶瓷组合物,其特征在于,按重量百分比由如下原料制备得到:
3.根据权利要求1或2所述的陶瓷组合物,其特征在于,所述的竹炭粉为高温微晶竹炭粉,由竹炭经1200℃以上高温烧制而成。
4.根据权利要求1-3之一所述的陶瓷组合物,其特征在于,所述竹炭粉的粒径为30μm~100μm。
5.根据权利要求1-4之一所述的电陶瓷组合物,其特征在于,所述的电气石晶体微粒为高纯电气石原矿,电气石结晶度≥95%,动态负离子数值≥500ions/cm3、波长4μm~14μm的远红外线辐射率≥90%。
6.根据权利要求1-5之一所述的陶瓷组合物,其特征在于,所述电气石晶体微粒的粒径为10μm~50μm。
7.根据权利要求1-6之一所述的陶瓷组合物,其特征在于,所述的粘土为高岭土、膨润土、漂白土或普通粘土中的任一种或至少两种的混合物。
8.根据权利要求1-7之一所述的陶瓷组合物,其特征在于,所述的发泡剂粒径为0.5μm~20μm;
优选地,所述发泡剂选自碳酸钙、碳酸镁或碳酸氢钠中的任意一种或至少两种的组合。
9.如权利要求1-8之一所述陶瓷组合物的制备方法,其特征是:包括如下步骤:
(1)将铁沸石、竹炭粉、发泡剂、电气石晶体微粒、粘土按比例搅拌混合,研磨成泥料;
(2)将泥料置于真空炼泥机中炼泥两次以上,再放置24小时以上自然陈腐;
(3)将经过自然陈腐的泥料放入成型设备造型,得到成型坯料;
(4)将成型坯料自然风干,或置于烘箱在80~100℃的温度条件下烘干;
(5)将干燥的坯料置于窑炉中,在还原气氛缓慢升温至600~800℃煅烧,保温30~50分钟;
(6)将上述煅烧物自然冷却至室温,制得电气石竹炭陶瓷。
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