CN108295833A - 除甲醛发光画制品的制备方法 - Google Patents
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 60
- 239000011941 photocatalyst Substances 0.000 claims abstract description 36
- 238000000576 coating method Methods 0.000 claims abstract description 32
- 239000011248 coating agent Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 18
- PPQREHKVAOVYBT-UHFFFAOYSA-H dialuminum;tricarbonate Chemical compound [Al+3].[Al+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O PPQREHKVAOVYBT-UHFFFAOYSA-H 0.000 claims description 16
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- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 9
- QGXMZGYYAAPYRV-UHFFFAOYSA-H dysprosium(3+);tricarbonate Chemical compound [Dy+3].[Dy+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O QGXMZGYYAAPYRV-UHFFFAOYSA-H 0.000 claims description 9
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- B01J35/39—
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
- C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/91—Bacteria; Microorganisms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2333/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2333/12—Homopolymers or copolymers of methyl methacrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/08—Cellulose derivatives
- C08J2401/26—Cellulose ethers
- C08J2401/28—Alkyl ethers
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Abstract
本发明涉及一种除甲醛发光画制品的制备方法,其特征在于其制备工艺方法包括以下步骤:①原料;②混料;③材料微波烘干转晶格处理;④烧结;⑤粉碎;⑥粒度分级;⑦包膜;⑧发光膜合成处理。本发明的有益效果是,能有效吸可见光及储能并转换释放波段435nm,450nm,485nm,565nm激发纳米光触媒材料,使本项目产品在此波长的照射激发下,产生类似光合作用的光催化反应,产生出氧化能力极强的自由氢氧基和活性氧,氧化分解各种有机化合物和部分无机物,破坏细菌的细胞膜和固化病毒的蛋白质,杀灭细菌和分解有机污染物,把有机污染物分解成无污染的水(H2O)和二氧化碳(CO2)。
Description
技术领域
本发明涉及一种利用复合长余辉发光粉的包膜纳米光触媒除甲醛发光画制品的制备方法。
背景技术
随着人们豪华装修及配套的家具日用品的使用中突然忽视了一个很严重的问题:甲醛及空气污染带来的危害:触目惊心甲醛=杀“童”剂!!!诱发儿童皮肤过敏,支气管炎,哮喘发作,智力发育障碍,免疫力极差,易感冒发烧。甲醛,作为一种对严重危害人类生命健康的气体,被誉为室内“夺命杀手”,尤其在中国,严重危害新装修家庭的生命健康,长期吸入超标甲醛会:
(1)慢性中毒,头晕乏力、恶心呕吐、眼睛红肿痛痒、咽喉疼痛、胸闷气喘;免疫力降低,记忆力减退,神经衰弱等;
(2)生育危机,精子质量差,死精,胎儿畸形,习惯性流产,导致不孕不育,新生儿先天愚型;
(3)癌变危机,鼻咽癌、血癌、淋巴癌、骨髓癌、骨髓性白血病风险极大提高。
新装修之后的房子,超标甲醛释放源几乎无处不在。如,装修材料:木质地板墙纸天花板家具涂料;家具:木质家具(橱柜、床具等)皮具沙发;家纺:窗帘地毯布艺乃至床品系列;电器:空调电脑。
科学试验证明:光触媒是一种纳米级的金属氧化物材料(二氧化钛比较常用),它涂敷于基材表面,干燥后形成薄膜,在光线的作用下,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;同时还具备除臭、抗污等功能。光触媒[Photocatalyst]是光[Photo=Light]+触媒(催化剂)[catalyst]的合成词。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,是当前国际上治理室内环境污染的最理想材料。光触媒在光的照射下,会产生类似光合作用的光催化反应,产生出氧化能力极强的自由氢氧基和活性氧,具有很强的光氧化还原功能,可氧化分解各种有机化合物和部分无机物,能破坏细菌的细胞膜和固化病毒的蛋白质,可杀灭细菌和分解有机污染物,把有机污染物分解成无污染的水(H2O)和二氧化碳(CO2),因而具有极强的杀菌、除臭、防霉、防污自洁、净化空气功能。
光触媒的特性为利用光合作用空气中的氧分子及水分子将所接触的有机物转换为二氧化碳跟水,自身不起变化,却可以促进化学反应的物质,也就是通过波长400-600nm光合作用转换氢氧基离子。
本发明就是综合利用纳米材料的特性,找出一种无需电能源能耗,本身材料通过光吸收储能释放出波长400-600nm来激发纳米材料形成光触媒作用的新型制品。
理论上有效期非常长久,维护费用低。同时,纳米二氧化钛等材料本身无毒无害,已广泛用于食品、医药、化妆品等各种领域。
一、利用发光粉产生的435nm,450nm,485nm,565nm波长激发纳米光触媒材料。利用基础碱土铝酸盐型发光材料,可以有效的在自然可见光或日光灯光照射下吸光10-30分钟,吸收的光能转化储存在晶格之中,在暗处又可将能量转化为光能而发光,有8-10小时效持续发光储能,亮度大于10mcd/m2,发光亮度衰减到0.32mcd/m2的持续时间更可达70小时以上,化学性质稳定,吸光、蓄光、发光过程可重复进行,使用寿命可达20年以上。该类材料无毒害,不含放射性,生产过程也无有害物质产生。
二、用以发光粉形成机理为基础铝酸锶SrAlO:Eu或铝酸镁MgSrAlO:Eu发光体包裹纳米材料,称为光触媒材料。典型配比为:纳米二氧化钛95份、纳米氧化锌3份、纳米氧化铝2份及溶剂各组份之和为100%,添加无机粘合剂混合成浆体。按照9:1比例在50升旋转塑料包膜机中包膜。使纳米光触媒材料包裹在稀土发光粉的每一个晶粒上。利用发光粉产生435nm,450nm,485nm,565nm波长激发纳米光触媒材料,有效的进行相互光合作用。
三、用包膜纳米材料工艺制备复合发光粉可以自动和光触媒光合作用,产生氢氧基离子达到破坏甲醛分子链结构,分解为二氧化碳和水,达到去除有害气体作用。其包膜稀土发光粉做成长余辉相纸底板,发光层表面在喷涂一层纳米光触媒。加强光触媒的转换功能,在没有光的情况下利用发光粉的储能光转换继续激发光触媒,长期起到除甲醛及有害气体的作用。
1、本行业国内发展状况:目前国内尚无其它厂家生产以LC-1稀土发光粉的包膜纳米光触媒涂层发光相纸。现在市场除甲醛有在室内喷涂纳米二氧化钛的报道。但是喷涂纳米二氧化钛虽然可以短暂的去除甲醛,因为不能很好的配合光合作用,起不到长期抑制甲醛和有害气体的产生。
2、本项目产品国外发展现状:目前,未见用稀土储能发光粉来激发光触媒的相关技术。
3、本技术是在我们自主研发三波段植物生长灯专用稀土复合荧光粉的基础上改进升级制备。不存在和市场冲突。
发明内容
本发明公开了一种除甲醛发光画制品的制备方法,本发明的方案原理及技术思路是:
一、如何使本项目发光粉能有效吸光及储能并转换释放产生波段435nm,450nm,485nm,565nm激发纳米光触媒材料,使之在此光波长的照射下,会产生类似光合作用的光催化反应,生产出氧化能力极强的自由氢氧基和活性氧。它具有很强的光氧化还原功能,氧化分解各种有机化合物和部分无机物,能破坏细菌的细胞膜和固化病毒的蛋白质,可杀灭细菌和分解有机污染物,把有机污染物分解成无污染的水(H2O)和二氧化碳(CO2)。
二、如何使本项目产品具有储能多,亮度高,发光时间长。发光理论:以无机和有机两大系统来了解发光现象,有机荧光体即使溶解在溶剂里也会发光,而无机荧光体则不行,有机荧光体包含有特定分子,而无机荧光体则包含特定的晶格结构,无机化合物是结合在一起的阴离子和阳离子而组合的特定化合物,阳离子在晶体结构中占据固定的晶格位置,而这发光体总电荷则等同于晶格另外位置的阴离子电荷,为了得到无机荧光体,必须用一个具有光学活性的阳离子来取代晶格内的阳离子,同样也可以用一个光学活性的阴离子取代晶格阴离子,阳离子必须于光学惰性的阴离子结合才能形成有效的发光粉。
本发明的工艺流程为:①原料;②混料;③材料微波烘干转晶格处理;④烧结;⑤粉碎;⑥粒度分级;⑦包膜;⑧发光膜合成处理;
根据工艺流程,以下详述本发明的组份及制备方法;
①、所述原料是由以下重量份组成:碳酸铝55份、碳酸锶20份、碳酸钙5份、碳酸镝10份、碳酸铕3份、硼酸7份,合计数量为100份;
②、混料,取上述原料,配比组份为碳酸铝55份、碳酸锶20份、碳酸钙5份、碳酸镝10份、碳酸铕3份、硼酸7份,合计数量100份,加纯净水按照1:1加入超声波共振的三维混料设备,按重量100份计算添加0.5%聚乙二醇分散剂,混合共计时间不低于24小时,保证原料混合均匀。
③、材料微波烘干转晶格处理,控制微波频率在300MHz---300GHz之间的电磁波,使碳酸铝、碳酸锶、碳酸钙、碳酸镝、碳酸铕、硼酸,产生反射、吸收和穿透作用,由于电荷分布不平衡的小分子迅速吸收电磁波而使极性分子产生25亿次/s以上的转动和碰撞,从而使无机材料极性分子随外电场变化摆动并产生热效应,又因为分子本身的热运动和相邻分子之间的相互作用,使分子随电场变化而摆动的规律受到阻碍,这样就产生了类似于摩擦的效应,使一部分能量转化为分子热能,造成分子运动的加剧,分子的高速旋转和振动使分子处于亚稳态,微波进入材料内部,微波场于物质相互作用,是电磁场能量转化为物质能量,温度梯度是内高外低,把水分子结晶水排出,均匀的微波加热方式使混合材料达到600度初级反应生成伽玛晶相,使复合原材料晶格结构形成更适合发光基体。
④、烧结:物料在气氛:氢气7%、氦气1%、氮气92%的惰性气体保护中回转电炉动态烧结,使原料中稀土三价铕在还原气氛下转变为二价铕,烧结控制温度在1440℃,时间为6-8小时,在保护气氛环境急冷出炉,氮气冷却使之达到理想的储能发光效果;
⑤、粉碎,将第④步骤经过烧结后的材料采用颚式粉碎机和对棍粉碎机粉碎为0.5-2mm半成品,再进入流化床式气流粉碎机精确粉碎;
⑥、粒度分级:粒度分级:采用旋风分离器选取密度为3.8±0.2g/cm3粒径小于5μm的颗粒所占百分比应不大于10%,粒径大于35μm的颗粒所占百分比应不大于15%,中心粒径D50大于等于20.0μm的颗粒粉末备用,作为包膜用基础发光粉。
⑦、包膜:光触媒材料制备按重量比:纳米二氧化钛95份、纳米氧化锌3份、纳米氧化铝2份,各组份之和为100%。按总重量1%加入浓度为25%的羧甲基纤维素粘合剂作为包膜浆体基料,取上述⑥步骤获得的发光粉总重量的10%加入配制好的纳米光触媒浆体材料在50升旋转四氟塑料包膜机中旋转包膜,使纳米光触媒材料均匀包裹在稀土复合发光粉的每一个晶粒上,利用发光粉产生435nm,450nm,485nm,565nm波长激发纳米光触媒材料,有效的进行相互光合作用。
⑧、发光膜合成处理:选用厚度0.2mm-0.5mm透明的吸墨亚克力薄膜板,采用丝网印刷工艺把第⑦步骤获得的包膜发光粉和有机透明塑料胶水按重量比9:1混合均匀涂敷在透明吸墨亚克力薄膜上,涂层三遍,80度热吹风干燥60分钟备用;覆膜光触媒材料配比为:纳米二氧化钛95份、纳米氧化锌3份、纳米氧化铝2份,各组份之和为100%,覆膜光触媒材料和浓度为25%的羧甲基纤维素按重量比1:1混合均匀,喷涂在上述有发光粉涂层亚克力薄板上3遍,发光层包裹形成0.1mm薄膜,即制得功能性发光纸。
涂覆技术要求:涂覆表层要求0.1mm完全覆盖发光粉的表层,覆膜光触媒材料和发光层有效的紧密接触进行光合作用。
本发明的有益效果是,能有效吸可见光及储能并转换释放波段435nm,450nm,485nm,565nm激发纳米光触媒材料,使本项目产品在此波长的照射激发下,产生类似光合作用的光催化反应,产生出氧化能力极强的自由氢氧基和活性氧,氧化分解各种有机化合物和部分无机物,破坏细菌的细胞膜和固化病毒的蛋白质,杀灭细菌和分解有机污染物,把有机污染物分解成无污染的水(H2O)和二氧化碳(CO2)。
具体实施方式:
根据工艺流程,以下详述本发明的组份及制备方法;
1、原料备料为碳酸铝55份,碳酸锶20份,碳酸钙5份,碳酸镝10份,碳酸铕3份,硼酸7份;
2、混料,取上述原料,配比组份为碳酸铝55份、碳酸锶20份、碳酸钙5份、碳酸镝10份、碳酸铕3份、硼酸7份,合计数量100份,加纯净水按照1:1加入超声波共振的三维混料设备,按重量100份计算添加0.5%聚乙二醇分散剂,混合共计时间不低于24小时,保证原料混合均匀。
3、材料微波烘干转晶格处理,控制微波频率在300MHz---300GHz之间的电磁波,使碳酸铝,碳酸锶,碳酸钙,碳酸镝,碳酸铕,硼酸。产生反射、吸收和穿透作用,由于电荷分布不平衡的小分子迅速吸收电磁波而使极性分子产生25亿次/s以上的转动和碰撞,从而使无机材料极性分子随外电场变化摆动并产生热效应;又因为分子本身的热运动和相邻分子之间的相互作用,使分子随电场变化而摆动的规律受到阻碍,这样就产生了类似于摩擦的效应,使一部分能量转化为分子热能,造成分子运动的加剧,分子的高速旋转和振动使分子处于亚稳态,微波进入材料内部,微波场于物质相互作用,是电磁场能量转化为物质能量,温度梯度是内高外低,把水分子结晶水排出,均匀的微波加热方式使混合材料达到600度初级反应生成伽玛晶相,使复合原材料晶格结构形成更适合发光基体;
4、烧结:物料在气氛:氢气7%、氦气1%、氮气92%的惰性气体保护中回转电炉动态烧结,使原料中稀土三价铕在还原气氛下转变为二价铕,烧结控制温度在1440℃,时间为6-8小时,烧结采用透气高铝坩埚装料300克,在保护气氛环境急冷出炉,氮气冷却使之达到理想的储能发光效果;
5、粉碎,将上述经过烧结后的基础材料采用颚式粉碎机和对棍粉碎机粉碎为0.5-2mm半成品,再进入流化床式气流粉碎机精确粉碎;
6、粒度分级:采用旋风分离器选取密度为3.8±0.2g/cm3粒径小于5μm的颗粒所占百分比应不大于10%,粒径大于35μm的颗粒所占百分比应不大于15%,中心粒径D50大于等于20.0μm的颗粒粉末备用,作为包膜用基础发光粉;
7、发光粉包膜:光触媒材料制备按重量比:纳米二氧化钛95份、纳米氧化锌3份、纳米氧化铝2份,各组份之和为100%,按总重量1%加入浓度为25%的羧甲基纤维素粘合剂作为包膜浆体基料,取上述6步骤获得的发光粉总重量的10%加入配制好的纳米光触媒浆体材料在50升旋转四氟塑料包膜机中旋转包膜,使纳米光触媒材料均匀包裹在复合长余辉荧光粉的每一个晶粒上,利用发光粉产生435nm,450nm,485nm,565nm波长激发纳米光触媒材料,有效的进行相互光合作用;
8、制备涂覆光触媒发光相纸:选用厚度0.2mm-0.5mm透明的吸墨亚克力薄膜板,采用丝网印刷工艺把第7步骤获得的包膜发光粉和有机透明塑料胶水按重量比9:1混合均匀涂敷在透明吸墨亚克力薄膜上,涂层三遍,80度热吹风干燥60分钟备用。覆膜光触媒材料配比为:纳米二氧化钛95份、纳米氧化锌3份、纳米氧化铝2份,各组份之和为100%。覆膜光触媒材料和浓度25%羧甲基纤维素按重量比例1:1混合均匀,喷涂在上述有发光粉涂层亚克力薄板上3遍,发光层包裹形成0.1mm薄膜,覆膜光触媒材料和发光层有效的接触进行光合作用,即制得功能性发光纸。
做成的发光画必须保持与空气接触,严禁密封,涂覆催化剂的发光画应该放置在可见光下使其有效吸光储能。
上面所述的实施例仅仅是对本发明的优选实施方式进行描述,并非对本发明的构思和范围进行限定,在不脱离本发明设计构思的前提下,本领域中普通工程技术人员对本发明的技术方案作出的各种变型和改进,均应落入本发明的保护范围,本发明请求保护的技术内容,已经全部记载在权利要求书中。
Claims (1)
1.除甲醛发光画制品的制备方法,其特征在于其制备工艺方法包括以下步骤:①原料;②混料;③材料微波烘干转晶格处理;④烧结;⑤粉碎;⑥粒度分级;⑦包膜;⑧发光膜合成处理;
①、所述原料是由以下重量份组成:碳酸铝55份、碳酸锶20份、碳酸钙5份、碳酸镝10份、碳酸铕3份、硼酸7份,合计数量为100份;
②、混料,取上述原料,配比组份为碳酸铝55份、碳酸锶20份、碳酸钙5份、碳酸镝10份、碳酸铕3份、硼酸7份,合计数量100份,加纯净水按照1:1加入超声波共振的三维混料设备,按重量100份计算添加0.5%聚乙二醇分散剂,混合共计时间不低于24小时,保证原料混合均匀。
③、材料微波烘干转晶格处理,控制微波频率在300MHz---300GHz之间的电磁波,使碳酸铝、碳酸锶、碳酸钙、碳酸镝、碳酸铕、硼酸,产生反射、吸收和穿透作用,由于电荷分布不平衡的小分子迅速吸收电磁波而使极性分子产生25亿次/s以上的转动和碰撞,从而使无机材料极性分子随外电场变化摆动并产生热效应,又因为分子本身的热运动和相邻分子之间的相互作用,使分子随电场变化而摆动的规律受到阻碍,这样就产生了类似于摩擦的效应,使一部分能量转化为分子热能,造成分子运动的加剧,分子的高速旋转和振动使分子处于亚稳态,微波进入材料内部,微波场于物质相互作用,是电磁场能量转化为物质能量,温度梯度是内高外低,把水分子结晶水排出,均匀的微波加热方式使混合材料达到600度初级反应生成伽玛晶相,使复合原材料晶格结构形成更适合发光基体。
④、烧结:物料在气氛:氢气7%、氦气1%、氮气92%的惰性气体保护中回转电炉动态烧结,使原料中稀土三价铕在还原气氛下转变为二价铕,烧结控制温度在1440℃,时间为6-8小时,在保护气氛环境急冷出炉,氮气冷却使之达到理想的储能发光效果;
⑤、粉碎:将第④步骤经过烧结后的材料采用颚式粉碎机和对棍粉碎机粉碎为0.5-2mm半成品,再进入流化床式气流粉碎机精确粉碎。
⑥、粒度分级:采用旋风分离器选取密度为3.8±0.2g/cm3粒径小于5μm的颗粒所占百分比应不大于10%,粒径大于35μm的颗粒所占百分比应不大于15%,中心粒径D50大于等于20.0μm的颗粒粉末备用,作为包膜用基础发光粉。
⑦、包膜:光触媒材料制备按重量比:纳米二氧化钛95份、纳米氧化锌3份、纳米氧化铝2份,各组份之和为100%。按总重量1%加入浓度为25%的羧甲基纤维素粘合剂作为包膜浆体基料,取上述⑥步骤获得的发光粉总重量的10%加入配制好的纳米光触媒浆体材料在50升旋转四氟塑料包膜机中旋转包膜,使纳米光触媒材料均匀包裹在稀土复合发光粉的每一个晶粒上,利用发光粉产生435nm,450nm,485nm,565nm波长激发纳米光触媒材料,有效的进行相互光合作用;
⑧、发光膜合成处理:选用厚度0.2mm-0.5mm透明的吸墨亚克力薄膜板,采用丝网印刷工艺把第⑦步骤获得的包膜发光粉和有机透明塑料胶水按重量比9:1混合均匀涂敷在透明吸墨亚克力薄膜上,涂层三遍,80度热吹风干燥60分钟备用;覆膜光触媒材料配比为:纳米二氧化钛95份、纳米氧化锌3份、纳米氧化铝2份,各组份之和为100%,覆膜光触媒材料和浓度为25%的羧甲基纤维素按重量比1:1混合均匀,喷涂在上述有发光粉涂层亚克力薄板上3遍,发光层包裹形成0.1mm薄膜,即制得功能性发光纸。
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