CN114835477A - 一种多功能净水陶瓷材料 - Google Patents
一种多功能净水陶瓷材料 Download PDFInfo
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- CN114835477A CN114835477A CN202210398759.4A CN202210398759A CN114835477A CN 114835477 A CN114835477 A CN 114835477A CN 202210398759 A CN202210398759 A CN 202210398759A CN 114835477 A CN114835477 A CN 114835477A
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- calcium sulfate
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910010293 ceramic material Inorganic materials 0.000 title claims abstract description 41
- 238000000746 purification Methods 0.000 title claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 121
- 238000002156 mixing Methods 0.000 claims abstract description 100
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims abstract description 68
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 60
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000003756 stirring Methods 0.000 claims abstract description 37
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000001914 filtration Methods 0.000 claims abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 33
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000006185 dispersion Substances 0.000 claims abstract description 27
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 25
- 239000004927 clay Substances 0.000 claims abstract description 25
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 25
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 25
- 238000005245 sintering Methods 0.000 claims abstract description 20
- 238000000227 grinding Methods 0.000 claims abstract description 17
- 239000003054 catalyst Substances 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims description 27
- 239000000243 solution Substances 0.000 claims description 23
- 238000001035 drying Methods 0.000 claims description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 17
- 239000011230 binding agent Substances 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 238000000748 compression moulding Methods 0.000 claims description 15
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 10
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 8
- 239000012065 filter cake Substances 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- 239000012298 atmosphere Substances 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 6
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 6
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 6
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 6
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000013078 crystal Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 4
- 239000000377 silicon dioxide Substances 0.000 abstract description 4
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- PKDCQJMRWCHQOH-UHFFFAOYSA-N triethoxysilicon Chemical compound CCO[Si](OCC)OCC PKDCQJMRWCHQOH-UHFFFAOYSA-N 0.000 abstract 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical class [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 79
- 238000005457 optimization Methods 0.000 description 16
- 239000000047 product Substances 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 7
- 239000002994 raw material Substances 0.000 description 6
- 229910021645 metal ion Inorganic materials 0.000 description 5
- 229920000767 polyaniline Polymers 0.000 description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 2
- 239000002156 adsorbate Substances 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 235000011132 calcium sulphate Nutrition 0.000 description 2
- 229910001430 chromium ion Inorganic materials 0.000 description 2
- 229910001431 copper ion Inorganic materials 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- -1 arsenic ions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- RVPVRDXYQKGNMQ-UHFFFAOYSA-N lead(2+) Chemical compound [Pb+2] RVPVRDXYQKGNMQ-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
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- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
- C01F11/466—Conversion of one form of calcium sulfate to another
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Abstract
本发明公开了一种多功能净水陶瓷材料,涉及新材料技术领域。本发明先将预处理磷石膏与盐酸混合于常压下反应制得二水硫酸钙晶须,然后在二水硫酸钙晶须外侧依次包覆二氧化硅层和γ‑氨丙基三乙氧基硅层,制得改性硫酸钙晶须,将改性硫酸钙晶须与含有苯胺的氧化石墨烯分散液混合,并加入催化剂溶液,搅拌反应后,研磨,制得改性石墨烯,将改性石墨烯与硅藻土和紫砂黏土混合,并加入羧甲基纤维素钠溶液,搅拌混合后,压制成型,烧结,制得多功能净水陶瓷材料。本发明制备的多功能净水陶瓷材料具较好的过滤效果,且具备杀菌性和导热性。
Description
技术领域
本发明涉及新材料技术领域,具体为一种多功能净水陶瓷材料。
背景技术
随着社会的发展和生活水平的提高,人们对生活质量的要求越来越高,清洁安全的饮用水是人们的生活质量的保证。获得干净安全的饮用水已成为世界范围内的热门议题。水是各类病菌传播的主要载体,人类所患疾病的80%与水污染有关。目前,水的污染日趋严重,江河湖泊等地表水及部分地区的地下水都存在不同程度的污染,水质性的缺水问题已引起人们的广泛关注。
饮用水中的主要污染物有可溶性的重金属离子、砷离子、微量有机污染物、消毒副产物、硝酸盐、亚硝酸盐及病原菌、病毒和病原微生物等,目前被广泛采用的净水材料主要有活性炭、分子筛、KDF和纳米滤膜等。
吸附法是去除污染水体中污染物的有效方法之一。吸附是通过吸附质和吸附剂的分子间范德华力、静电力、氢键和化学键等作用,将吸附质吸附到吸附剂上的物理化学现象。在环保领域,吸附法主要应用于预处理(减少水处理主体装置负荷,回收有用物质)和深度处理(提高处理水质量,满足回用水水质要求),对采用其他方法难以有效处理的剧毒和难降解的污染物,处理效果尤其显著。
目前,市面上净水使用的陶瓷材料功能太过单一,处理过滤不溶于水的物质和吸附金属离子外,不具备其他功能,因此目前的净水陶瓷材料无法完全适合人们的生活需要。
发明内容
本发明的目的在于提供一种多功能净水陶瓷材料及其制备方法,以解决现有技术中的问题。
一种多功能净水陶瓷材料,其特征在于,主要包括以下重量份数的原料组分:60~85份硅藻土,10~15份紫砂黏土,2~4份羧甲基纤维素钠和8~16份改性石墨烯;
所述改性石墨烯是由片层氧化石墨烯与苯胺混合后,再与改性硫酸钙晶须在过硫酸铵作用下反应,经球磨后制得。
作为优化,所述改性硫酸钙晶须是由二水硫酸钙晶须经正硅酸乙酯和γ-氨丙基三乙氧基硅烷处理后制得。
作为优化,所述二水硫酸钙晶须是由磷石膏经除杂后,与盐酸在常压下反应制得。
作为优化,所述多功能净水陶瓷材料是由以下重量份数的原料组成:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份改性石墨烯。
作为优化,一种多功能净水陶瓷材料的制备方法,主要包括以下制备步骤:
(1)将预处理磷石膏与盐酸混合,搅拌反应后,过滤,干燥,得二水硫酸钙晶须;
(2)将步骤(1)所得二水硫酸钙晶须与乙醇溶液混合,并加入氨水,正硅酸乙酯和聚乙烯吡咯烷酮,搅拌反应后,过滤,干燥,得改性硫酸钙晶须坯料,将改性硫酸钙晶须坯料与γ-氨丙基三乙氧基硅烷溶液混合,搅拌混合后,过滤,得改性硫酸钙晶须;
(3)将氧化石墨烯分散液与苯胺混合,并加入步骤(2)所得改性硫酸钙晶须,搅拌混合后,得氧化石墨烯混合液,将氧化石墨烯混合液与催化剂溶液混合,搅拌反应后,过滤,干燥,研磨,得改性石墨烯;
(4)按重量份数计,依次称取:60~85份硅藻土,10~15份紫砂黏土,2~4份羧甲基纤维素钠和8~16份步骤(3)所得改性石墨烯,将羧甲基纤维素钠与水混合,得粘结剂,将紫砂黏土与硅藻土混合,并加入改性石墨烯,混合研磨后,得混合料,将混合料与粘结剂混合,压制成型,得坯体,将坯体进行烧结后,冷却至室温,出料,得多功能净水陶瓷材料。
作为优化,所述多功能净水陶瓷材料的制备方法主要包括以下制备步骤:
(1)将预处理磷石膏与质量分数为20%的盐酸按质量比1:3~1:6混合,于温度为80℃的条件下搅拌反应8~12min后,过滤,得二水硫酸钙晶须坯料,将二水硫酸钙晶须坯料于温度为85℃的条件下干燥1~3h,得二水硫酸钙晶须;
(2)将步骤(1)所得二水硫酸钙晶须与质量分数为80%的乙醇水溶液按质量比1:100~1:250混合于烧杯中,并向烧杯中加入二水硫酸钙晶须质量1~3倍的质量分数为10%的氨水,二水硫酸钙晶须质量2~5倍的正硅酸乙酯和二水硫酸钙晶须质量1~2倍的聚乙烯吡咯烷酮,于温度为45℃的条件下搅拌反应12~13h后,过滤,得滤饼,将滤饼于温度为60℃的条件下干燥1~3h,得改性硫酸钙晶须坯料,将改性硫酸钙晶须坯料与质量分数为15%的γ-氨丙基三乙氧基硅烷乙醇溶液按质量比1:20~1:25混合,搅拌混合5~10h后,过滤,得改性硫酸钙晶须;
(3)将氧化石墨烯分散液与苯胺按质量比10:1~10:3混合于烧瓶中,并向烧瓶中加入氧化石墨烯分散液质量0.1~0.3倍的步骤(2)所得改性硫酸钙晶须,搅拌混合后,得氧化石墨烯混合液,将氧化石墨烯混合液与催化剂溶液按体积比3:1~8:1混合,于温度为0~10℃的条件下搅拌反应5~8h后,过滤,得改性石墨烯坯料,将改性石墨烯坯料于温度为80~90℃的条件下干燥1~2h后,再研磨30~40min,得改性石墨烯;
(4)按重量份数计,依次称取:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份步骤(3)所得改性石墨烯,将羧甲基纤维素钠与水按质量比1:40~1:100混合,得粘结剂,将紫砂黏土与硅藻土混合,并加入改性石墨烯,混合研磨后,得混合料,将混合料与粘结剂混合,压制成型,得坯体,将坯体进行烧结后,冷却至室温,出料,得多功能净水陶瓷材料。
作为优化,步骤(1)所述预处理磷石膏的制备方法为将磷石膏粉碎球磨,过200目筛,得细化磷石膏,将细化磷石膏用去离子水洗涤2~4次后,得预处理磷石膏。
作为优化,步骤(3)所述氧化石墨烯分散液为将氧化石墨烯与水按质量比1:100~1:150混合,于频率为55kHz的条件下超声分散10~30min后,得氧化石墨烯分散液;所述催化剂溶液为将过硫酸铵与浓度为1mol/L的盐酸按质量比1:10混合,得催化剂溶液。
作为优化,步骤(4)所述压制成型的压力条件为35~40MPa。
作为优化,步骤(4)所述烧结的工艺条件为先于温度为195℃的条件下在空气中加热2h后,在于氮气氛围下以2~3℃/min的升温速率升温至800℃,保温2h,最后于空气氛围中以2~4℃/min的升温速率升温至1100~1400℃,保温烧结30~40min。
与现有技术相比,本发明的有益效果是:
本发明在制备多功能净水陶瓷材料时,使用改性石墨烯,改性石墨烯由片层氧化石墨烯与苯胺混合后,再与改性硫酸钙晶须在过硫酸铵作用下反应后,经球磨制得。
首先,改性石墨烯中使用改性硫酸钙晶须,改性硫酸钙晶须中二水硫酸钙晶须在改性后表面包覆由二氧化硅,并且在二氧化硅的作用下可在外侧再次包覆γ-氨丙基三乙氧基硅烷,由于γ-氨丙基三乙氧基硅烷的作用,当改性硫酸钙晶须与苯胺混合后,可在氨基的作用下将苯胺吸附于改性硫酸钙晶须表面,同时由于在氧化石墨烯混合液制备过程中,氧化石墨烯表面也同样吸附由苯胺,因此,在过硫酸铵的催化下,苯胺聚合形成聚苯胺时,可将改性硫酸钙晶须代入氧化石墨烯的层间,从而使得改性石墨烯间形成改性硫酸钙晶须-聚苯胺复合柱撑结构,使改性石墨烯具备过滤性能,进而在加入产品中后,提高产品的过滤性能;
其次,在多功能净水陶瓷材料烧结过程中,由于前期在氮气条件下进行保温加热处理,可使得氧化石墨烯间的聚苯胺炭化形成炭质结构,形成炭-改性硫酸钙晶须柱撑结构,并且将氧化石墨烯进行还原,形成石墨烯,由于石墨烯和炭的存在,因此,可提高产品的导热性能,从而赋予产品具有加热的功能,同时,由于在后期烧结过程中,改性硫酸钙晶须中的二水硫酸钙会分解产生水蒸气,并且硫酸钙晶须在炭的作用下分解温度会降低,从而使得硫酸钙在相对较低的温度下分解,产生气体和氧化钙,因此,在改性硫酸钙晶须分解作用下,聚苯胺形成的炭质层会形成多孔结构,从而进一步提高产品对金属离子的过滤效果;
再者,石墨烯间的炭-改性硫酸钙晶须柱撑结构中含有氧化钙,由于氧化钙的存在,可赋予产品处理酸性污水的能力,并且氢氧化钙具备良好的杀菌性,从而使得产品具有良好的杀菌性能,进而在改性石墨烯加入产品中后,可赋予产品具备更好的使用性能。
具体实施方式
下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
为了更清楚的说明本发明提供的方法通过以下实施例进行详细说明,在以下实施例中制作的多功能净水陶瓷材料的各指标测试方法如下:
孔隙率:测量各实施例所得多功能净水陶瓷材料与对比例所得产品的孔隙率,并且测量在水压0.36MPa的条件下,5min的水通量。
金属离子去除率:用各实施例所得多功能净水陶瓷材料与对比例所得产品对相同浓度的金属离子溶液进行过滤,测量其对铬离子、铜离子和铅离子的去除率。
杀菌率:用各实施例所得多功能净水陶瓷材料与对比例所得产品对相同浓度的大肠杆菌菌液进行过滤,测量杀菌率。
实施例1
一种多功能净水陶瓷材料,按重量份数计,主要包括:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份改性石墨烯。
一种多功能净水陶瓷材料的制备方法,所述多功能净水陶瓷材料的制备方法主要包括以下制备步骤:
(1)将预处理磷石膏与质量分数为20%的盐酸按质量比1:5混合,于温度为80℃的条件下搅拌反应10min后,过滤,得二水硫酸钙晶须坯料,将二水硫酸钙晶须坯料于温度为85℃的条件下干燥2h,得二水硫酸钙晶须;
(2)将步骤(1)所得二水硫酸钙晶须与质量分数为80%的乙醇水溶液按质量比1:150混合于烧杯中,并向烧杯中加入二水硫酸钙晶须质量2倍的质量分数为10%的氨水,二水硫酸钙晶须质量3倍的正硅酸乙酯和二水硫酸钙晶须质量1.5倍的聚乙烯吡咯烷酮,于温度为45℃的条件下搅拌反应12h后,过滤,得滤饼,将滤饼于温度为60℃的条件下干燥2h,得改性硫酸钙晶须坯料,将改性硫酸钙晶须坯料与质量分数为15%的γ-氨丙基三乙氧基硅烷乙醇溶液按质量比1:22混合,搅拌混合6h后,过滤,得改性硫酸钙晶须;
(3)将氧化石墨烯分散液与苯胺按质量比10:3混合于烧瓶中,并向烧瓶中加入氧化石墨烯分散液质量0.2倍的步骤(2)所得改性硫酸钙晶须,搅拌混合后,得氧化石墨烯混合液,将氧化石墨烯混合液与催化剂溶液按体积比4:1混合,于温度为6℃的条件下搅拌反应6h后,过滤,得改性石墨烯坯料,将改性石墨烯坯料于温度为85℃的条件下干燥1.5h后,再研磨35min,得改性石墨烯;
(4)按重量份数计,依次称取:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份步骤(3)所得改性石墨烯,将羧甲基纤维素钠与水按质量比1:50混合,得粘结剂,将紫砂黏土与硅藻土混合,并加入改性石墨烯,混合研磨后,得混合料,将混合料与粘结剂混合,压制成型,得坯体,将坯体进行烧结后,冷却至室温,出料,得多功能净水陶瓷材料。
作为优化,步骤(1)所述预处理磷石膏的制备方法为将磷石膏粉碎球磨,过200目筛,得细化磷石膏,将细化磷石膏用去离子水洗涤2~4次后,得预处理磷石膏。
作为优化,步骤(3)所述氧化石墨烯分散液为将氧化石墨烯与水按质量比1:120混合,于频率为55kHz的条件下超声分散20min后,得氧化石墨烯分散液;所述催化剂溶液为将过硫酸铵与浓度为1mol/L的盐酸按质量比1:10混合,得催化剂溶液。
作为优化,步骤(4)所述压制成型的压力条件为36MPa。
作为优化,步骤(4)所述烧结的工艺条件为先于温度为195℃的条件下在空气中加热2h后,在于氮气氛围下以3℃/min的升温速率升温至800℃,保温2h,最后于空气氛围中以3℃/min的升温速率升温至1150℃,保温烧结35min。
实施例2
一种多功能净水陶瓷材料,按重量份数计,主要包括:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份改性石墨烯。
一种多功能净水陶瓷材料的制备方法,所述多功能净水陶瓷材料的制备方法主要包括以下制备步骤:
(1)将预处理磷石膏与质量分数为20%的盐酸按质量比1:5混合,于温度为80℃的条件下搅拌反应10min后,过滤,得二水硫酸钙晶须坯料,将二水硫酸钙晶须坯料于温度为85℃的条件下干燥2h,得二水硫酸钙晶须;
(2)将步骤(1)所得二水硫酸钙晶须与质量分数为80%的乙醇水溶液按质量比1:150混合于烧杯中,并向烧杯中加入二水硫酸钙晶须质量2倍的质量分数为10%的氨水,二水硫酸钙晶须质量3倍的正硅酸乙酯,于温度为45℃的条件下搅拌反应12h后,过滤,得滤饼,将滤饼于温度为60℃的条件下干燥2h,得改性硫酸钙晶须坯料,将改性硫酸钙晶须坯料与质量分数为15%的γ-氨丙基三乙氧基硅烷乙醇溶液按质量比1:22混合,搅拌混合6h后,过滤,得改性硫酸钙晶须;
(3)将氧化石墨烯分散液与苯胺按质量比10:3混合于烧瓶中,并向烧瓶中加入氧化石墨烯分散液质量0.2倍的步骤(2)所得改性硫酸钙晶须,搅拌混合后,得氧化石墨烯混合液,将氧化石墨烯混合液与催化剂溶液按体积比4:1混合,于温度为6℃的条件下搅拌反应6h后,过滤,得改性石墨烯坯料,将改性石墨烯坯料于温度为85℃的条件下干燥1.5h后,再研磨35min,得改性石墨烯;
(4)按重量份数计,依次称取:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份步骤(3)所得改性石墨烯,将羧甲基纤维素钠与水按质量比1:50混合,得粘结剂,将紫砂黏土与硅藻土混合,并加入改性石墨烯,混合研磨后,得混合料,将混合料与粘结剂混合,压制成型,得坯体,将坯体进行烧结后,冷却至室温,出料,得多功能净水陶瓷材料。
作为优化,步骤(1)所述预处理磷石膏的制备方法为将磷石膏粉碎球磨,过200目筛,得细化磷石膏,将细化磷石膏用去离子水洗涤2~4次后,得预处理磷石膏。
作为优化,步骤(3)所述氧化石墨烯分散液为将氧化石墨烯与水按质量比1:120混合,于频率为55kHz的条件下超声分散20min后,得氧化石墨烯分散液;所述催化剂溶液为将过硫酸铵与浓度为1mol/L的盐酸按质量比1:10混合,得催化剂溶液。
作为优化,步骤(4)所述压制成型的压力条件为36MPa。
作为优化,步骤(4)所述烧结的工艺条件为先于温度为195℃的条件下在空气中加热2h后,在于氮气氛围下以3℃/min的升温速率升温至800℃,保温2h,最后于空气氛围中以3℃/min的升温速率升温至1150℃,保温烧结35min。
实施例3
一种多功能净水陶瓷材料,按重量份数计,主要包括:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份改性石墨烯。
一种多功能净水陶瓷材料的制备方法,所述多功能净水陶瓷材料的制备方法主要包括以下制备步骤:
(1)将预处理磷石膏与质量分数为20%的盐酸按质量比1:5混合,于温度为80℃的条件下搅拌反应10min后,过滤,得二水硫酸钙晶须坯料,将二水硫酸钙晶须坯料于温度为85℃的条件下干燥2h,得二水硫酸钙晶须;
(2)将步骤(1)所得二水硫酸钙晶须与质量分数为80%的乙醇水溶液按质量比1:150混合于烧杯中,并向烧杯中加入二水硫酸钙晶须质量2倍的质量分数为10%的氨水,二水硫酸钙晶须质量3倍的正硅酸乙酯和二水硫酸钙晶须质量1.5倍的聚乙烯吡咯烷酮,于温度为45℃的条件下搅拌反应12h后,过滤,得改性硫酸钙晶须;
(3)将氧化石墨烯分散液与苯胺按质量比10:3混合于烧瓶中,并向烧瓶中加入氧化石墨烯分散液质量0.2倍的步骤(2)所得改性硫酸钙晶须,搅拌混合后,得氧化石墨烯混合液,将氧化石墨烯混合液与催化剂溶液按体积比4:1混合,于温度为6℃的条件下搅拌反应6h后,过滤,得改性石墨烯坯料,将改性石墨烯坯料于温度为85℃的条件下干燥1.5h后,再研磨35min,得改性石墨烯;
(4)按重量份数计,依次称取:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份步骤(3)所得改性石墨烯,将羧甲基纤维素钠与水按质量比1:50混合,得粘结剂,将紫砂黏土与硅藻土混合,并加入改性石墨烯,混合研磨后,得混合料,将混合料与粘结剂混合,压制成型,得坯体,将坯体进行烧结后,冷却至室温,出料,得多功能净水陶瓷材料。
作为优化,步骤(1)所述预处理磷石膏的制备方法为将磷石膏粉碎球磨,过200目筛,得细化磷石膏,将细化磷石膏用去离子水洗涤2~4次后,得预处理磷石膏。
作为优化,步骤(3)所述氧化石墨烯分散液为将氧化石墨烯与水按质量比1:120混合,于频率为55kHz的条件下超声分散20min后,得氧化石墨烯分散液;所述催化剂溶液为将过硫酸铵与浓度为1mol/L的盐酸按质量比1:10混合,得催化剂溶液。
作为优化,步骤(4)所述压制成型的压力条件为36MPa。
作为优化,步骤(4)所述烧结的工艺条件为先于温度为195℃的条件下在空气中加热2h后,在于氮气氛围下以3℃/min的升温速率升温至800℃,保温2h,最后于空气氛围中以3℃/min的升温速率升温至1150℃,保温烧结35min。
对比例1
一种多功能净水陶瓷材料,按重量份数计,主要包括:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份改性石墨烯。
一种多功能净水陶瓷材料的制备方法,所述多功能净水陶瓷材料的制备方法主要包括以下制备步骤:
(1)将预处理磷石膏与质量分数为20%的盐酸按质量比1:5混合,于温度为80℃的条件下搅拌反应10min后,过滤,得二水硫酸钙晶须坯料,将二水硫酸钙晶须坯料于温度为85℃的条件下干燥2h,得二水硫酸钙晶须;
(2)将氧化石墨烯分散液与苯胺按质量比10:3混合于烧瓶中,并向烧瓶中加入氧化石墨烯分散液质量0.2倍的步骤(2)所得二水硫酸钙晶须,搅拌混合后,得氧化石墨烯混合液,将氧化石墨烯混合液与催化剂溶液按体积比4:1混合,于温度为6℃的条件下搅拌反应6h后,过滤,得改性石墨烯坯料,将改性石墨烯坯料于温度为85℃的条件下干燥1.5h后,再研磨35min,得改性石墨烯;
(3)按重量份数计,依次称取:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份步骤(2)所得改性石墨烯,将羧甲基纤维素钠与水按质量比1:50混合,得粘结剂,将紫砂黏土与硅藻土混合,并加入改性石墨烯,混合研磨后,得混合料,将混合料与粘结剂混合,压制成型,得坯体,将坯体进行烧结后,冷却至室温,出料,得多功能净水陶瓷材料。
作为优化,步骤(1)所述预处理磷石膏的制备方法为将磷石膏粉碎球磨,过200目筛,得细化磷石膏,将细化磷石膏用去离子水洗涤2~4次后,得预处理磷石膏。
作为优化,步骤(2)所述氧化石墨烯分散液为将氧化石墨烯与水按质量比1:120混合,于频率为55kHz的条件下超声分散20min后,得氧化石墨烯分散液;所述催化剂溶液为将过硫酸铵与浓度为1mol/L的盐酸按质量比1:10混合,得催化剂溶液。
作为优化,步骤(3)所述压制成型的压力条件为36MPa。
作为优化,步骤(3)所述烧结的工艺条件为先于温度为195℃的条件下在空气中加热2h后,在于氮气氛围下以3℃/min的升温速率升温至800℃,保温2h,最后于空气氛围中以3℃/min的升温速率升温至1150℃,保温烧结35min。
对比例2
一种多功能净水陶瓷材料,按重量份数计,主要包括:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份改性石墨烯。
一种多功能净水陶瓷材料的制备方法,所述多功能净水陶瓷材料的制备方法主要包括以下制备步骤:
(1)将预处理磷石膏与质量分数为20%的盐酸按质量比1:5混合,于温度为80℃的条件下搅拌反应10min后,过滤,得二水硫酸钙晶须坯料,将二水硫酸钙晶须坯料于温度为85℃的条件下干燥2h,得二水硫酸钙晶须;
(2)将氧化石墨烯分散液与苯胺按质量比10:3混合于烧瓶中,并向烧瓶中加入氧化石墨烯分散液质量0.2倍的步骤(2)所得二水硫酸钙晶须,搅拌混合后,得氧化石墨烯混合液,将氧化石墨烯混合液与催化剂溶液按体积比4:1混合,于温度为6℃的条件下搅拌反应6h后,过滤,得改性石墨烯坯料,将改性石墨烯坯料于温度为85℃的条件下干燥1.5h后,再研磨35min,得改性石墨烯;
(3)按重量份数计,依次称取:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份步骤(2)所得改性石墨烯,将羧甲基纤维素钠与水按质量比1:50混合,得粘结剂,将紫砂黏土与硅藻土混合,并加入改性石墨烯,混合研磨后,得混合料,将混合料与粘结剂混合,压制成型,得坯体,将坯体进行烧结后,冷却至室温,出料,得多功能净水陶瓷材料。
作为优化,步骤(1)所述预处理磷石膏的制备方法为将磷石膏粉碎球磨,过200目筛,得细化磷石膏,将细化磷石膏用去离子水洗涤2~4次后,得预处理磷石膏。
作为优化,步骤(2)所述氧化石墨烯分散液为将氧化石墨烯与水按质量比1:120混合,于频率为55kHz的条件下超声分散20min后,得氧化石墨烯分散液;所述催化剂溶液为将过硫酸铵与浓度为1mol/L的盐酸按质量比1:10混合,得催化剂溶液。
作为优化,步骤(3)所述压制成型的压力条件为36MPa。
作为优化,步骤(3)所述烧结的工艺条件为于空气氛围中以3℃/min的升温速率升温至1150℃,保温烧结35min。
效果例
下表1给出了采用本发明实施例1至3与对比例的多功能净水陶瓷材料的性能分析结果。
表1
实施例1 | 实施例2 | 实施例3 | 对比例1 | 对比例2 | |
孔隙率(%) | 65.7 | 64.2 | 52.5 | 50.6 | 63.2 |
水通量(mL) | 664 | 623 | 526 | 507 | 628 |
铬离子去除率(%) | 99 | 91 | 81 | 76 | 78 |
铜离子去除率(%) | 99 | 88 | 82 | 72 | 73 |
铅离子去除率(%) | 99 | 90 | 80 | 70 | 75 |
杀菌率(%) | 96 | 78 | 62 | 50 | 42 |
热导率(W/mK) | 156 | 105 | 88 | 66 | 63 |
从表1中实施例1与对比例的实验数据比较可发现,在制备多功能净水陶瓷材料时加入改性石墨烯可有效提高产品对金属离子的去除率,同时赋予产品杀菌性和导热性,从实施例1与实施例2的实验数据比较可发现,当改性石墨烯中改性硫酸钙晶须在制备时不加入聚乙烯吡咯烷酮时,二水硫酸钙晶须表面二氧化硅层致密,无法使得产品具有良好的孔隙率,因此,降低产品的性能,从实施例1与实施例3的实验数据比较可发现,当在制备改性硫酸钙晶须时不使用γ-氨丙基三乙氧基硅烷对改性硫酸钙晶须坯料进行处理,改性硫酸钙晶须表面无法吸附苯胺,因此,降低了产品的性能。
对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何标记视为限制所涉及的权利要求。
Claims (1)
1.一种多功能净水陶瓷材料,其特征在于:按重量份数计,主要包括:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份改性石墨烯;
所述多功能净水陶瓷材料的制备方法主要包括以下制备步骤:
(1)将预处理磷石膏与质量分数为20%的盐酸按质量比1:5混合,于温度为80℃的条件下搅拌反应10min后,过滤,得二水硫酸钙晶须坯料,将二水硫酸钙晶须坯料于温度为85℃的条件下干燥2h,得二水硫酸钙晶须;
(2)将步骤(1)所得二水硫酸钙晶须与质量分数为80%的乙醇水溶液按质量比1:150混合于烧杯中,并向烧杯中加入二水硫酸钙晶须质量2倍的质量分数为10%的氨水,二水硫酸钙晶须质量3倍的正硅酸乙酯和二水硫酸钙晶须质量1.5倍的聚乙烯吡咯烷酮,于温度为45℃的条件下搅拌反应12h后,过滤,得滤饼,将滤饼于温度为60℃的条件下干燥2h,得改性硫酸钙晶须坯料,将改性硫酸钙晶须坯料与质量分数为15%的γ-氨丙基三乙氧基硅烷乙醇溶液按质量比1:22混合,搅拌混合6h后,过滤,得改性硫酸钙晶须;
(3)将氧化石墨烯分散液与苯胺按质量比10:3混合于烧瓶中,并向烧瓶中加入氧化石墨烯分散液质量0.2倍的步骤(2)所得改性硫酸钙晶须,搅拌混合后,得氧化石墨烯混合液,将氧化石墨烯混合液与催化剂溶液按体积比4:1混合,于温度为6℃的条件下搅拌反应6h后,过滤,得改性石墨烯坯料,将改性石墨烯坯料于温度为85℃的条件下干燥1.5h后,再研磨35min,得改性石墨烯;
(4)按重量份数计,依次称取:75份硅藻土,10份紫砂黏土,2份羧甲基纤维素钠和13份步骤(3)所得改性石墨烯,将羧甲基纤维素钠与水按质量比1:50混合,得粘结剂,将紫砂黏土与硅藻土混合,并加入改性石墨烯,混合研磨后,得混合料,将混合料与粘结剂混合,压制成型,得坯体,将坯体进行烧结后,冷却至室温,出料,得多功能净水陶瓷材料;
步骤(1)所述预处理磷石膏的制备方法为将磷石膏粉碎球磨,过200目筛,得细化磷石膏,将细化磷石膏用去离子水洗涤2~4次后,得预处理磷石膏;
步骤(3)所述氧化石墨烯分散液为将氧化石墨烯与水按质量比1:120混合,于频率为55kHz的条件下超声分散20min后,得氧化石墨烯分散液;所述催化剂溶液为将过硫酸铵与浓度为1mol/L的盐酸按质量比1:10混合,得催化剂溶液;
步骤(4)所述压制成型的压力条件为36MPa;
步骤(4)所述烧结的工艺条件为先于温度为195℃的条件下在空气中加热2h后,在于氮气氛围下以3℃/min的升温速率升温至800℃,保温2h,最后于空气氛围中以3℃/min的升温速率升温至1150℃,保温烧结35min。
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