CN112876134A - 一种可吸附和分解甲醛的活性竹炭板及其制备方法和应用 - Google Patents
一种可吸附和分解甲醛的活性竹炭板及其制备方法和应用 Download PDFInfo
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 83
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- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 20
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- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
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- SZQUEWJRBJDHSM-UHFFFAOYSA-N iron(3+);trinitrate;nonahydrate Chemical compound O.O.O.O.O.O.O.O.O.[Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O SZQUEWJRBJDHSM-UHFFFAOYSA-N 0.000 description 1
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- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000008520 organization Effects 0.000 description 1
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 description 1
- 235000019319 peptone Nutrition 0.000 description 1
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- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
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Abstract
本发明提供了一种可吸附和分解甲醛的活性竹炭板及其制备方法和应用,其原料包括:纳米光触媒活性竹炭粉30‑55份,椰子壳活性炭3‑8份,聚氯乙烯树脂PVC6‑35份,碳酸钙5‑20份,PVC发泡调节剂0.1‑0.4份,钙锌稳定剂0.4‑0.9份,氯化聚乙烯0.2‑0.5份;其中,所述纳米光触媒活性竹炭粉的平均孔径大小为1‑2.5nm,且所述纳米光触媒活性竹炭粉中纳米级二氧化钛的负载量为0.5‑1.8wt%。本发明所提供的活性竹炭板吸附和分解甲醛性能优异,可释放负离子和红外线,硬度高,力学性能优于目前常规竹炭板,制备工艺简单可控,所用原料常见易得且价格低廉,可用于制造橱柜、鞋柜、卫浴柜和地板等装修装饰板材,实际应用前景广阔。
Description
技术领域
本发明属于建筑材料技术领域,涉及建筑用环保板材及其制备方法,更具体地,涉及一种可吸附和分解甲醛的活性竹炭板及其制备方法和应用。
背景技术
近年来,随着城市现代化的不断推进,住宅与公共场所林立,装修装饰材料的使用逐年递增;然而,这些建材和家具中会释放出多种有毒有害气体,如甲醛、氨气、苯及苯系物等挥发性气体,室内空气污染被推上风口浪尖。
随着科学技术的迅猛发展和人们生活水平的日益提高,人们对室内空气污染的担忧愈发高涨,具有环境污染治理功能的新型建筑材料的研发已成为国内外大量学者关注的热点。甲醛作为主要室内污染物,是世界卫生组织公认的一类致癌物,净化甲醛至关重要。
竹炭板是目前装修装饰市场中引人注目的一类人造板材,是一种添加了竹炭粉及其它功能性组分的硬质PVC板,是将竹炭与其他基质材料均匀混合制备而成的板材。竹炭板在材质与功能上明显区别于传统的硬质PVC板,同时区别于竹炭以规则炭块或炭包的形式嵌附、封闭在多层PVC板中的板材。
现有技术中,将光触媒剂涂抹在竹炭板的表面,从而实现对甲醛等有害有机物发生反应,氧化分解为二氧化碳和水,实现对甲醛的不断吸附与降解;然而,其不仅用量大,制备工艺复杂,生产成本高,且抑制了纳米光触媒活性竹炭粉的强吸附作用,不利于吸附在活性竹炭孔隙中的有害物质实现有效分解。
迄今为止,尚未见到能真正高效吸附且有效分解有害气体的综合性能优异的竹炭板及其制备方法的相关报道。
发明内容
针对现有技术存在的不足,本发明提供了一种可吸附和分解甲醛、可释放负离子和红外线且力学性能优异的环保型活性竹炭板及其制备方法和应用。
本发明采用如下技术方案:
一种可吸附和分解甲醛的活性竹炭板,包括以下重量份的原料:
具体地,在上述技术方案中,所述纳米光触媒活性竹炭粉的平均孔径大小为1-2.5nm,且所述纳米光触媒活性竹炭粉中纳米级二氧化钛的负载量为0.5-1.8wt%。
进一步地,在上述技术方案中,所述纳米光触媒活性竹炭粉中,以体积份计:
孔径大小≤2nm的小孔,占总孔容积的60-90份;
孔径大小在2-50nm的中孔,占总孔容积的5-7份;
孔径大小≥50nm的大孔,占总孔容积的10-30份。
具体地,在本发明的具体实施方案中,所述纳米光触媒活性竹炭粉采用如下方法制备:
以五年生以上高山毛竹为原料,经1000-1300℃炭化处理12-40h后,再在950-1050℃下水蒸气活化6-15h,磁选去除金属后,研磨并过12500目筛,得到竹炭粉,最后,按重量比为纳米级二氧化钛:竹炭粉=0.5-1.8:100的比例,将纳米级二氧化钛通过沉积法沉积在所述竹炭粉的纳米微孔中。
详细地,在本发明的具体实施方案中,所述椰子壳活性炭采用如下方法制备:
将原料椰壳破碎后,炭化并粉碎至设定粒度;将获得的物料与固体氢氧化钾混合均匀,并置于入微波炉中活化,活化过程中在料层表面通氮气保护,得到活化物料;采用盐酸对活化物料进行酸洗,并采用蒸馏水进行多次漂洗,至活化物料呈中性;对获得的活化物料烘干处理,即得椰壳活性炭。
再进一步地,在上述技术方案中,所述可吸附和分解甲醛的活性竹炭板还包括,
详细地,在本发明的具体实施方式中,所述可吸附和分解甲醛的活性竹炭板由以下重量份的原料热压制得:
在本发明的一个优选实施方式中,所述可吸附和分解甲醛的活性竹炭板由以下重量份的原料热压制得:
本发明另一方面还提供了上述可吸附和分解甲醛的活性竹炭板的制备方法,包括:
按比例分别称取各原料,混合均匀后加入到模腔中,随后加热并加压压制,脱模后即得。
在上述技术方案中,所述加热具体为,以1-3℃/min的升温速度加热至120-180℃后保温5-20min。
在上述技术方案中,所述加压压制的压力为10-15MPa。
在上述技术方案中,所述加压压制的保压时间为3-30min。
本发明又一方面还提供了上述可吸附和分解甲醛的活性竹炭板或上述可吸附和分解甲醛的活性竹炭板的制备方法在室内装修装饰中的应用。
与现有技术相比,本发明的有益效果为:
(1)本发明通过将纳米光触媒沉积在平均孔径大小为1-2.5nm的竹炭粉中形成纳米光触媒活性竹炭粉,并以此为主要原料热压制得活性竹炭板,所制得的活性竹炭板吸附降解甲醛性能优异,能释放负离子和红外线,并能杀灭空气中的有害细菌;
(2)本发明所提供的活性竹炭板硬度高,能抵抗大于普通碳板30%以上的承受压力抗磨损,有一定的缓冲能力,吸湿变形小,且无不良有害物质;
(3)本发明所提供的活性竹炭板的制备方法工艺简单,过程可控,所用原料常见易得且价格低廉,所制备得到的活性竹炭板可用于装修房屋,制造橱柜、鞋柜、护墙板、地板、宠物柜、卫浴柜、竹炭门和竹炭工艺品等系列家居产品,实际应用前景广阔。
具体实施方式
下面结合具体实施例对本发明作进一步的详细说明,以使本领域的技术人员更加清楚地理解本发明。
以下实施例,仅用于说明本发明,但不止用来限制本发明的范围。
基于本发明中的具体实施例,本领域普通技术人员在没有做出创造性劳动的情况下,所获得的其他所有实施例,都属于本发明的保护范围。
在本发明实施例中,若无特殊说明,所有原料组分均为本领域技术人员熟知的市售产品。
在本发明实施例中,若未具体指明,所用的技术手段均为本领域技术人员所熟知的常规手段。
本发明实施例所用的纳米光触媒活性竹炭粉采用如下方法制备:
以五年生以上高山毛竹为原料,经1180℃炭化处理25h后,再在980℃下水蒸气活化9h,磁选去除金属后,研磨并过12500目筛,得到竹炭粉,最后,按重量比为纳米级二氧化钛:竹炭粉=1.2:100的比例,将纳米级二氧化钛通过沉积法沉积在所述竹炭粉的纳米微孔中。
在所制得的纳米光触媒活性竹炭粉中:
孔径大小≤2nm的小孔,占总孔容积的74.8%;
孔径大小在2-50nm的中孔,占总孔容积的6.2%;
孔径大小≥50nm的大孔,占总孔容积的19%。
本发明实施例所用的椰子壳活性炭采用如下方法制备:
S1、按质量比1:4,取椰壳与盐酸溶液混合均匀,静置,取出椰壳,干燥,粉碎,过筛,收集过筛颗粒,按质量份数计,取75份水、55份过筛颗粒、22.8份蛋白胨、19.5份琼脂、13.5份蔗糖、3.2份磷酸氢二钠、1.6份磷酸二氢钠,搅拌混合,杀菌消毒,得营养物;
S2、将营养物与菌粉按质量比10.8:1混合均匀,并置于发酵罐中,在3:6.5-37.5℃下发酵,收集发酵混合物,将发酵混合物进行离心分离,收集沉淀,使用乙醇洗涤,干燥,得基料;
S3、按质量份数计,取95份水、35份基料、11.5份九水硝酸铁、10份异丙醇铝、7份硫酸钛、4.8份碳酸钠及3.25份表面活性剂,搅拌均匀,超声震荡,使用氨水调节pH至8.0-8.5,静置陈化,喷雾干燥,收集干燥物;
S4、将干燥物放入碳化炉中,以13℃/min升温至400-500℃预热,再升温至600-700℃,保温50-60min,升温至800-900℃,进行碳化,收集碳化物,洗涤至中性,干燥,粉碎,收集粉碎物,即得椰壳活性炭。
本发明实施例所用的其余原料均为市售产品。
实施例1
本发明实施例提供一种可吸附和分解甲醛的活性竹炭板及其制备方法。
1、原料组成
2、制备方法
按比例分别称取各原料,混合均匀后加入到模腔中,随后以2℃/min的升温速度加热至175℃后保温15min,并加压至12.5MPa保压15min压制,脱模后即得。
实施例2
本发明实施例提供一种可吸附和分解甲醛的活性竹炭板及其制备方法。
1、原料组成
2、制备方法
按比例分别称取各原料,混合均匀后加入到模腔中,随后以1.5℃/min的升温速度加热至160℃后保温20min,并加压至12.5MPa保压25min压制,脱模后即得。
实施例3
本发明实施例提供一种可吸附和分解甲醛的活性竹炭板及其制备方法。
1、原料组成
2、制备方法
按比例分别称取各原料,混合均匀后加入到模腔中,随后以2℃/min的升温速度加热至175℃后保温15min,并加压至12.5MPa保压15min压制,脱模后即得。
对比例1
本发明对比例提供一种可吸附和分解甲醛的活性竹炭板及其制备方法。
1、原料组成
具体地,其纳米光触媒活性竹炭粉采用如下方法制备而成:
以五年生以上高山毛竹为原料,经750℃炭化处理5h后,再磁选去除金属后,研磨并过800目筛,得到竹炭粉,最后,按重量比为纳米级二氧化钛:竹炭粉=0.5-1.8:100的比例,将纳米级二氧化钛通过沉积法沉积在所述竹炭粉的微孔中,得到平均孔径大小为15-25μm的纳米光触媒活性竹炭粉。
2、制备方法
按比例分别称取各原料,混合均匀后加入到模腔中,随后以1.5℃/min的升温速度加热至160℃后保温20min,并加压至12.5MPa保压25min压制,脱模后即得。
对比例2
本发明对比例提供一种可吸附和分解甲醛的活性竹炭板及其制备方法。
1、原料组成
本发明对比例所用的竹炭粉采用如下方法制备:
以五年生以上高山毛竹为原料,经1180℃炭化处理25h后,再在980℃下水蒸气活化9h,磁选去除金属后,研磨并过12500目筛,得到竹炭粉。
2、制备方法
按比例分别称取除纳米级二氧化钛之外的各原料,混合均匀后加入到模腔中,随后以2℃/min的升温速度加热至175℃后保温15min,并加压至12.5MPa保压15min压制,脱模后即得,最后将纳米级二氧化钛均匀涂抹在所制得的竹炭板的表面,即得。
实验例
1、吸附和降解效果对比:
采用钢化玻璃制作6个尺寸大小均为1.2m*1.2m*1.2m的密封实验舱,其中5个分别放置实施例1-3所制备的活性竹炭板和对比例1-2所制备的活性竹炭板(5个活性竹炭板的尺寸大小相同,且均为0.3m*0.3m),另一个不放置板材作为空白对照,同时在6个密封实验舱内的顶部固定设置一个50W的日光灯,同时在侧面固定设置一个功率为20W的电风扇用于促进空气流通,密封实验舱底部放置装有20ml的75wt%的甲醛溶液的玻璃皿。
将密封实验舱封闭严实后,开启日光灯和电风扇,密闭45min后用甲醛浓度测试仪检测密封实验舱内的甲醛浓度,作为初始浓度,随后每间隔1h用甲醛浓度测试仪检测密封实验舱内的甲醛浓度,计算其吸附降解率(%),结果如下表所示。
2、力学性能检测方法的结果对比
采用建筑用板材的力学性能检测标准(GB/T24137-2009)检测实施例1-3和对比例1-2的力学性能,结果如下表所示。
最后,本发明的方法仅为较佳的实施方案,并非用于限定本发明的保护范围。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (10)
2.根据权利要求1所述的可吸附和分解甲醛的活性竹炭板,其特征在于,
所述纳米光触媒活性竹炭粉中,以体积份计:
孔径大小≤2nm的小孔,占总孔容积的60-90份;
孔径大小在2-50nm的中孔,占总孔容积的5-7份;
孔径大小≥50nm的大孔,占总孔容积的10-30份。
3.根据权利要求2所述的可吸附和分解甲醛的活性竹炭板,其特征在于,
所述纳米光触媒活性竹炭粉采用如下方法制备:
以五年生以上高山毛竹为原料,经1000-1300℃炭化处理12-40h后,再在950-1050℃下水蒸气活化6-15h,磁选去除金属后,研磨并过12500目筛,得到竹炭粉,最后,按重量比为纳米级二氧化钛:竹炭粉=0.5-1.8:100的比例,将纳米级二氧化钛通过沉积法沉积在所述竹炭粉的纳米微孔中。
7.权利要求1-6任一项所述的可吸附和分解甲醛的活性竹炭板的制备方法,其特征在于,
包括:
按比例分别称取各原料,混合均匀后加入到模腔中,随后加热并加压压制,脱模后即得。
8.根据权利要求7所述的可吸附和分解甲醛的活性竹炭板的制备方法,其特征在于,
所述加热具体为,以1-3℃/min的升温速度加热至120-180℃后保温5-20min。
9.根据权利要求7所述的可吸附和分解甲醛的活性竹炭板的制备方法,其特征在于,
所述加压压制的压力为10-15MPa;
和/或,所述加压压制的保压时间为3-30min。
10.权利要求1-6任一项所述的可吸附和分解甲醛的活性竹炭板或权利要求7-9任一项所述的可吸附和分解甲醛的活性竹炭板的制备方法在室内装修装饰中的应用。
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