CN111838181A - 纳米光触媒除甲醛抗菌防霉液及应用该防霉液的装饰材料 - Google Patents
纳米光触媒除甲醛抗菌防霉液及应用该防霉液的装饰材料 Download PDFInfo
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Abstract
本发明涉及纳米光触媒除甲醛抗菌防霉液及应用该防霉液的装饰材料,该纳米光触媒除甲醛抗菌防霉液由以下步骤制得:将去离子水和经过改性修饰的纳米级二氧化钛混合制得二氧化钛浓度为1‑30%的二氧化钛去离子水溶液,并经搅拌、超声波振荡一级24小时静止沉淀,得到光触媒溶液一;将去离子水和经过改性修饰的纳米级氧化锌混合制得氧化锌浓度为1‑30%的氧化锌去离子水溶液,并经搅拌、超声波振荡一级24小时静止沉淀,得到光触媒溶液二;将光触媒溶液一和光触媒溶液二按照体积比1:1的比例混合,并加入经过改性修饰的纳米银离子,经搅拌、超声波振荡及48小时静止沉淀,最终配制成二氧化钛加氧化锌浓度为16%‑20%、PH值为7.6至7.8的弱碱性纳米光触媒除甲醛抗菌防霉液。
Description
技术领域
本发明涉及装饰材料技术领域,特别是一种纳米光触媒除甲醛抗菌防霉液及应用该防霉液的装饰材料。
背景技术
甲醛(英语:Formaldehyde),化学式HCHO,质量30.03,又称蚁醛,天然存在的有机化合物,无色的刺激性气体,对人眼、鼻等有刺激作用,被列入“已知人类致癌物”,甲醛的主要危害表现为对皮肤粘膜的刺激作用。甲醛在室内达到一定浓度时,人就有不适感。大于0.08 mg/m³的甲醛浓度可引起眼红、眼痒、咽喉不适或疼痛、声音嘶哑、喷嚏、胸闷、气喘、皮炎等。新装修的房间甲醛含量较高,是众多疾病的主要诱因。
光触媒是一种以纳米级二氧化钛为代表的具有光催化功能的光半导体材料的总称,它涂布于基材表面,在紫外光及可见光的作用下,产生强烈催化降解功能:能有效地降解空气中有毒有害气体;能有效杀灭多种细菌,并能将细菌或真菌释放出的毒素分解及无害化处理;利用光触媒技术对装饰材料的表面进行处理,是解决甲醛危害的重要手段。
发明内容
本发明要解决的技术问题是提供一种安全可靠、效率高的纳米光触媒除甲醛抗菌防霉液及应用该防霉液的装饰材料。
为解决上述技术问题,本发明提供的纳米光触媒除甲醛抗菌防霉液,由以下步骤制得:首先将去离子水和经过改性修饰的纳米级二氧化钛混合制得二氧化钛浓度为1-30%的二氧化钛去离子水溶液,并经搅拌、超声波振荡一级24小时静止沉淀,得到光触媒溶液一;其次,将去离子水和经过改性修饰的纳米级氧化锌混合制得氧化锌浓度为1-30%的氧化锌去离子水溶液,并经搅拌、超声波振荡一级24小时静止沉淀,得到光触媒溶液二;再次,将光触媒溶液一和光触媒溶液二按照体积比1:1的比例混合,并加入经过改性修饰的纳米银离子,经搅拌、超声波振荡及48小时静止沉淀,最终配制成透明度极高的、二氧化钛加氧化锌浓度为16%-20%、PH值为7.6至7.8的弱碱性纳米光触媒除甲醛抗菌防霉液。
进一步,二氧化钛、氧化锌、纳米银离子的粒径小于5nm,且二氧化钛、氧化锌、纳米银离子的比表面积不小于200m2/g。
进一步,二氧化钛去离子水溶液中二氧化钛浓度为24%,氧化锌去离子水溶液中氧化锌的浓度为12%,以使光触媒溶液一和光触媒溶液二按照体积比1:1的比例混合后二氧化钛加氧化锌的浓度为18%,PH值为7.7。
一种装饰材料,其表面由上述的纳米光触媒除甲醛抗菌防霉液进行处理。
进一步,纳米光触媒除甲醛抗菌防霉液以超声波喷涂、或气压喷涂、或淋涂的形式均匀涂布于装饰材料的表面,即可得到在自然可见光条件下对空气中及材料中的醛类化合物、氨类化合物、苯类化合物、VOC等化学混合物具有超强分解效果的装饰材料。
进一步,所述装饰材料为浸渍木纹纸,在浸渍木纹装饰纸生产中,在浸渍生产最后烘干阶段前,将配制好的纳米光触媒除甲醛抗菌防霉液,在距浸渍木纹纸上方5cm的高度,以加压喷涂方式,将纳米光触媒除甲醛抗菌防霉液均匀喷涂于浸渍木纹纸表面,涂布量为33.5克/平方米,然后浸渍木纹纸进入烘干阶段,烘干完成后,制成表面附着有二氧化钛、氧化锌与银离子的浸渍木纹纸。
进一步,所述装饰材料为板材,板材的表面热压有装饰纸,装饰纸在热压前经纳米光触媒除甲醛抗菌防霉液对其表面进行处理。
发明的技术效果:(1)本发明的纳米光触媒除甲醛抗菌防霉液,相对于现有技术,采用经过改性修饰的二氧化钛、氧化锌、纳米银离子作为光触媒介质,在紫外光及可见光的作用下,产生强烈催化降解功能,能有效地降解空气中有毒有害气体,能有效杀灭多种细菌,并能将细菌或真菌释放出的毒素分解及无害化处理,是解决装饰材料中甲醛残留的重要手段;(2)将混合后的光触媒溶液中二氧化钛加氧化锌的浓度控制为18%,PH值控制为7.7,催化效率高,安全可靠。
具体实施方式
实施例1
本实施例的纳米光触媒除甲醛抗菌防霉液,由以下步骤制得:首先将去离子水和经过改性修饰的纳米级二氧化钛混合制得二氧化钛浓度为21%的二氧化钛去离子水溶液,并经搅拌、超声波振荡一级24小时静止沉淀,得到光触媒溶液一;其次,将去离子水和经过改性修饰的纳米级氧化锌混合制得氧化锌浓度为11%的氧化锌去离子水溶液,并经搅拌、超声波振荡一级24小时静止沉淀,得到光触媒溶液二;再次,将光触媒溶液一和光触媒溶液二按照体积比1:1的比例混合,并加入经过改性修饰的纳米银离子,经搅拌、超声波振荡及48小时静止沉淀,最终配制成透明度极高的、二氧化钛加氧化锌浓度为16%、PH值为7.6的弱碱性纳米光触媒除甲醛抗菌防霉液,其中二氧化钛、氧化锌、纳米银离子的粒径小于5nm,且二氧化钛、氧化锌、纳米银离子的比表面积不小于200m2/g。
实施例2
本实施例的纳米光触媒除甲醛抗菌防霉液,由以下步骤制得:首先将去离子水和经过改性修饰的纳米级二氧化钛混合制得二氧化钛浓度为24%的二氧化钛去离子水溶液,并经搅拌、超声波振荡一级24小时静止沉淀,得到光触媒溶液一,经反复实验与测试证明,二氧化钛光触媒溶液喷涂于物体表面用于除甲醛抗菌的最佳使用浓度为5-7%,而在实际生产中,由于光触媒溶液喷涂及烘干后,经过热压或附着于表面油漆上,因此,需要抵消约50%的可以与空气接触的部分,所以,采用了浓度为24%的二氧化钛光触媒溶液;其次,将去离子水和经过改性修饰的纳米级氧化锌混合制得氧化锌浓度为12%的氧化锌去离子水溶液,并经搅拌、超声波振荡一级24小时静止沉淀,得到光触媒溶液二,经反复实验与测试证明,氧化锌光触媒溶液混合喷涂于物体表面,用于除甲醛抗菌的最佳使用浓度为2-4%,而在实际生产中,由于氧化锌光触媒溶液喷涂及烘干后,经过热压或附着于表面油漆上,因此,需要抵消约50%的可以与空气接触的部分,所以,采用了浓度为12%的氧化锌光触媒溶液;再次,将光触媒溶液一和光触媒溶液二按照体积比1:1的比例混合,并加入经过改性修饰的纳米银离子,经搅拌、超声波振荡及48小时静止沉淀,最终配制成透明度极高的、二氧化钛加氧化锌浓度为18%、PH值为7.7的弱碱性纳米光触媒除甲醛抗菌防霉液,弱碱性为提高水溶性提供了可靠的保障,也可以根据实际需要,提高或降低两种溶液的浓度与混合比例;其中二氧化钛、氧化锌、纳米银离子的粒径小于5nm,且二氧化钛、氧化锌、纳米银离子的比表面积不小于200m2/g。
实施例3
本实施例的纳米光触媒除甲醛抗菌防霉液,由以下步骤制得:首先将去离子水和经过改性修饰的纳米级二氧化钛混合制得二氧化钛浓度为27%的二氧化钛去离子水溶液,并经搅拌、超声波振荡一级24小时静止沉淀,得到光触媒溶液一;其次,将去离子水和经过改性修饰的纳米级氧化锌混合制得氧化锌浓度为13%的氧化锌去离子水溶液,并经搅拌、超声波振荡一级24小时静止沉淀,得到光触媒溶液二;再次,将光触媒溶液一和光触媒溶液二按照体积比1:1的比例混合,并加入经过改性修饰的纳米银离子,经搅拌、超声波振荡及48小时静止沉淀,最终配制成透明度极高的、二氧化钛加氧化锌浓度为20%、PH值为7.8的弱碱性纳米光触媒除甲醛抗菌防霉液,其中二氧化钛、氧化锌、纳米银离子的粒径小于5nm,且二氧化钛、氧化锌、纳米银离子的比表面积不小于200m2/g。
实施例4
一种装饰材料,其表面由上述的纳米光触媒除甲醛抗菌防霉液进行处理,该装饰材料为浸渍木纹纸,在浸渍木纹装饰纸生产中,在浸渍生产最后烘干阶段前,将配制好的纳米光触媒除甲醛抗菌防霉液,在距浸渍木纹纸上方5cm的高度,以加压喷涂方式,将纳米光触媒除甲醛抗菌防霉液均匀喷涂于浸渍木纹纸表面,涂布量为33.5克/平方米,然后浸渍木纹纸进入烘干阶段,烘干完成后,制成表面附着有二氧化钛、氧化锌、纳米银离子的浸渍木纹纸。
实施例5
一种浸渍纸层压板饰面多层实木复合地板,先采用二氧化钛加氧化锌浓度为18%、PH值为7.7的弱碱性纳米光触媒除甲醛抗菌防霉液经超声波喷涂的方式对浸渍纸进行喷涂并烘干,以获得纳米光触媒除甲醛抗菌防霉装饰纸,再将纳米光触媒除甲醛抗菌防霉装饰纸以热压方式固定在层压板饰面多层实木复合地板的表面,使得纳米光触媒除甲醛抗菌防霉装饰纸表面附着的二氧化钛、氧化锌、纳米银离子固定在层压板饰面多层实木复合地板的装饰层表面,达到与空气接触后应起到的光触媒作用。
实施例6
一种浸渍纸层压木质地板,先采用二氧化钛加氧化锌浓度为18%、PH值为7.7的弱碱性纳米光触媒除甲醛抗菌防霉液经淋涂的方式对浸渍纸进行淋涂并烘干,以获得纳米光触媒除甲醛抗菌防霉装饰纸,再将纳米光触媒除甲醛抗菌防霉装饰纸以热压方式固定在层压木质地板的表面,使得纳米光触媒除甲醛抗菌防霉装饰纸表面附着的二氧化钛、氧化锌、纳米银离子固定在层压木质地板的装饰层表面,达到与空气接触后应起到的光触媒作用。
实施例7
一种家具板材,在该家具板材进行表面油漆涂饰后,进行烘干前,将二氧化钛加氧化锌浓度为18%、PH值为7.7的纳米光触媒除甲醛抗菌防霉液均匀淋涂于表面油漆之上,再进行油漆烘干,即得到纳米光触媒除甲醛抗菌防霉的家具板材。
实施例8
一种表面涂覆油漆的地板,在该地板进行表面油漆涂饰后,进行烘干前,将二氧化钛加氧化锌浓度为18%、PH值为7.7的纳米光触媒除甲醛抗菌防霉液均匀淋涂于表面油漆之上,再进行油漆烘干,即得到纳米光触媒除甲醛抗菌防霉的地板。
实施例9
一种表面涂覆油漆的装饰板材,在该装饰板材进行表面油漆涂饰后,进行烘干前,将二氧化钛加氧化锌浓度为18%、PH值为7.7的纳米光触媒除甲醛抗菌防霉液均匀淋涂于表面油漆之上,再进行油漆烘干,即得到纳米光触媒除甲醛抗菌防霉的装饰板材。
实施例10
一种壁纸,该壁纸在生产最后烘干阶段前,将配制好的二氧化钛加氧化锌浓度为18%、PH值为7.7的纳米光触媒除甲醛抗菌防霉液淋涂在壁纸上,即得到纳米光触媒除甲醛抗菌防霉的壁纸。
实施例11
一种墙面,该前面在进行表面油漆涂饰后,将二氧化钛加氧化锌浓度为18%、PH值为7.7的纳米光触媒除甲醛抗菌防霉液均匀淋涂于表面油漆之上,再进行油漆晾干或烘干,即得到纳米光触媒除甲醛抗菌防霉的墙面。
经广州工业微生物检测中心检测,依据QB/T 2761-2006 室内空气净化产品净化效果测定方法、GB/T 11737-1989 居住区大气中苯、甲苯和二甲苯卫生检验标准方法、GB/T30706-2014 可见光照射下光催化抗菌材料及制品抗菌性能测试方法及评价对我公司送检的样品编号为KJ20181174-1的实际浓度仅为3%的纳米光触媒除甲醛抗菌防霉液的检测结果为,24小时的甲醛清除率为96.1%,24小时的苯清除率为93.8%,24小时的TVOC清除率为91.1%,对大肠杆菌、金黄色葡萄球菌、白色念珠菌的总抗菌率,均达到99%以上,具有较强抗菌作用,具体检测结果参见表1。
表1 气态污染物去除率的试验结果
其中,去除率y(%)=(Ca-Cb)/Cb*100%。
综上所述,我们以实际浓度为18%的纳米光触媒除甲醛抗菌防霉液进行最终的产品生产,去除约50%的不能与空气接触的部分,即,以9%的浓度与空气进行接触,则为实际运用了相当于检测中3%浓度的检测溶液的3倍的量,而实际的生产使用浓度则达到了检测浓度的6倍,气态污染物去除率更高。
显然,上述实施例仅仅是为清楚地说明本发明所作的举例,而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而这些属于本发明的精神所引申出的显而易见的变化或变动仍处于本发明的保护范围之中。
Claims (7)
1.一种纳米光触媒除甲醛抗菌防霉液,其特征在于,该纳米光触媒除甲醛抗菌防霉液,由以下步骤制得:首先将去离子水和经过改性修饰的纳米级二氧化钛混合制得二氧化钛浓度为1-30%的二氧化钛去离子水溶液,并经搅拌、超声波振荡一级24小时静止沉淀,得到光触媒溶液一;其次,将去离子水和经过改性修饰的纳米级氧化锌混合制得氧化锌浓度为1-30%的氧化锌去离子水溶液,并经搅拌、超声波振荡一级24小时静止沉淀,得到光触媒溶液二;再次,将光触媒溶液一和光触媒溶液二按照体积比1:1的比例混合,并加入经过改性修饰的纳米银离子,经搅拌、超声波振荡及48小时静止沉淀,最终配制成透明度极高的、二氧化钛加氧化锌浓度为16%-20%、PH值为7.6至7.8的弱碱性纳米光触媒除甲醛抗菌防霉液。
2.根据权利要求1所述的纳米光触媒除甲醛抗菌防霉液,其特征在于,二氧化钛、氧化锌、纳米银离子的粒径小于5nm,且二氧化钛、氧化锌、纳米银离子的比表面积不小于200m2/g。
3.根据权利要求2所述的纳米光触媒除甲醛抗菌防霉液的制备方法,其特征在于,二氧化钛去离子水溶液中二氧化钛浓度为24%,氧化锌去离子水溶液中氧化锌的浓度为12%,以使光触媒溶液一和光触媒溶液二按照体积比1:1的比例混合后二氧化钛加氧化锌的浓度为18%,PH值为7.7。
4.一种装饰材料,其特征在于,所述装饰材料的表面由上述权利要求1-3之任一所述的纳米光触媒除甲醛抗菌防霉液进行处理。
5.根据权利要求4所述的装饰材料,其特征在于,纳米光触媒除甲醛抗菌防霉液以超声波喷涂、或气压喷涂、或淋涂的形式均匀涂布于装饰材料的表面。
6.根据权利要求5所述的装饰材料,其特征在于,所述装饰材料为浸渍木纹纸,在浸渍木纹装饰纸生产中,在浸渍生产最后烘干阶段前,将配制好的纳米光触媒除甲醛抗菌防霉液,在距浸渍木纹纸上方5cm的高度,以加压喷涂方式,将纳米光触媒除甲醛抗菌防霉液均匀喷涂于浸渍木纹纸表面,涂布量为33.5克/平方米,然后浸渍木纹纸进入烘干阶段,烘干完成后,制成表面附着有二氧化钛、氧化锌、银离子的浸渍木纹纸。
7.根据权利要求5所述的装饰材料,其特征在于,所述装饰材料为板材,板材的表面热压有装饰纸,装饰纸在热压前经纳米光触媒除甲醛抗菌防霉液对其表面进行处理。
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