阅读说明：本技术 一种甲醛净化装饰壁画 (Formaldehyde purification decorative fresco ) 是由 刘戈 戴九松 郭国良 陈猛 于 2019-03-13 设计创作，主要内容包括：本发明公开了一种甲醛净化装饰壁画,其包括一壁画框架,壁画框架的内部依次套设有一外罩、一滤料支撑体和一壁画层；滤料支撑体的内部填充有可吸附甲醛、并具有荧光效应的滤料；壁画框架的一侧边上开设个两个相邻凹槽,两个凹槽的上方共同盖设有一透明的检视窗,检视窗分别与两个凹槽围合形成两个独立的过滤网格单元,这两个过滤网格单元中均填充有滤料,其中一个过滤网格单元与检视窗的两端围合形成四周密封的结构,另一个过滤网格单元为两端开口的结构,检视窗内还设有贯通于这两个过滤网格单元内部的紫外灯管。本发明提供的壁画具有美观装饰作用,同时具有甲醛净化功能,且能指示何时需要更换过滤材料。(The invention discloses a formaldehyde purification decorative mural, which comprises a mural frame, wherein an outer cover, a filter material supporting body and a mural layer are sequentially sleeved in the mural frame; the filter material supporting body is internally filled with a filter material which can absorb formaldehyde and has a fluorescence effect; offer two adjacent recesses of a plurality of on one side of mural painting frame, the top of two recesses is covered jointly and is equipped with a transparent inspection window, the inspection window encloses with two recesses respectively and closes formation two independent filtration net unit, all pack in these two filtration net units has the filter material, one of them filtration net unit encloses with the both ends of inspection window and closes formation sealed structure all around, another filtration net unit is both ends open-ended structure, still be equipped with in the inspection window and link up in the inside ultraviolet fluorescent tube of these two filtration net units. The mural provided by the invention has an attractive decoration effect, has a formaldehyde purification function and can indicate when the filter material needs to be replaced.)

1. A formaldehyde purification decorative mural is characterized by comprising a mural frame, wherein an outer cover, a filter material supporting body and a mural layer are sequentially sleeved in the mural frame; the filter material supporting body is internally filled with a filter material which can absorb formaldehyde and has a fluorescence effect;

the wall painting frame is characterized in that one side edge of the wall painting frame is provided with two adjacent grooves, a transparent inspection window is jointly covered above the two grooves, the inspection window and the two grooves are respectively enclosed to form two independent filtering grid units, the filtering grid units are filled with filtering materials, one filtering grid unit and the two ends of the inspection window are enclosed to form a structure with the periphery sealed, the other filtering grid unit is of a structure with two open ends, and ultraviolet lamp tubes penetrating through the two filtering grid units are further arranged in the inspection window.

2. The formaldehyde-purifying decorative fresco of claim 1, wherein a gap is left between the mural layer and the filter material support body, and the width of the gap is 3mm-10 mm.

3. The formaldehyde-purifying decorative fresco of claim 1, wherein the fresco frame is a rectangular parallelepiped;

the filter material support body is composed of a plurality of filter grid units with parallel gas channels, and the filter grid units are hexagonal, circular or square.

4. The formaldehyde-purifying decorative fresco of claim 3, wherein the filter material is filled in the filter mesh units by physical filling, or adhered to the side wall surfaces of the filter mesh units by glue.

5. The formaldehyde-purifying decorative fresco of claim 4, wherein the inspection window is made of transparent glass or acrylic, and the size of the filter material filled in the filter grid units with the periphery sealed corresponding to the inspection window is the same as the size of the filter material filled in the rest filter grid units.

6. The formaldehyde-purifying decorative fresco of claim 1, wherein the formaldehyde-purifying decorative fresco further comprises a power supply portion cooperating with the ultraviolet lamp, the power supply portion is disposed outside the fresco frame, and the power supply portion comprises a switch for controlling the ultraviolet lamp to be turned on and off.

7. The formaldehyde-purifying decorative fresco of claim 6, wherein a slot is further formed in the mural frame at a position corresponding to an end of the ultraviolet lamp tube, the slot being used to provide a space for connecting the ultraviolet lamp tube and the power supply portion.

8. The formaldehyde-purifying decorative fresco of claim 1, wherein the outer cover is a mesh cloth, and the pore size of the mesh cloth is smaller than the size of the filter material.

9. The formaldehyde purifying decorative fresco of claim 1, further comprising a sealing strip for sealing the periphery of the fresco frame.

10. The formaldehyde-purifying decorative fresco of claim 1, wherein the inspection window has a transparent interlayer, and the ultraviolet lamp is disposed in the transparent interlayer without directly contacting with the filter material of the filter grid unit.

Technical Field

The invention relates to a formaldehyde purification decorative fresco.

Background

In order to deal with formaldehyde pollution in home decoration, passive formaldehyde adsorption products are produced, such as activated carbon bags, bamboo charcoal bags, diatom ooze coatings, formaldehyde removal coatings and the like. As is known well, all adsorbing materials can reach the adsorption saturation at a certain moment in the use, need change the filter screen subassembly this moment, if do not change in time, continue to use and can lead to filter screen purification function to become invalid, still can appear the condition that formaldehyde secondary released to physical adsorption class material even, increased healthy risk on the contrary. For consumers, whether the actual purification of formaldehyde has an effect or not is good, and how the loss condition of the filter screen exceeds the service life or not is difficult to visually perceive.

CN104654451A discloses an air purifier and an air purification method, and particularly discloses a material for modifying and adsorbing formaldehyde by using amine substances as active sites and application thereof in the air purifier.

CN101623582A discloses a device for indicating and removing formaldehyde, in particular to a method for indicating the using degree of a filter screen by respectively filling an activated carbon adsorption material and a formaldehyde indicator into different containers and combining the activated carbon adsorption material and the formaldehyde indicator.

There are also many reports that the color change is generated by means of an external indicator, but the consumption of the formaldehyde adsorption active group is asynchronous with the consumption of the indicator, so that the color change cannot correctly indicate the exhaustion of the adsorption material. This results in the user feeding back that the filter screen assembly has changed color just after it is purchased. How to make the adsorbing material have large formaldehyde adsorption capacity and directly, objectively and truly indicate the consumption condition of the adsorbing material through color change is a problem which is not well solved in the existing literature documents.

Disclosure of Invention

The invention aims to solve the technical problem that the exhaustion condition of an adsorbent cannot be accurately indicated by a multi-purpose filter screen and an indicator in the prior art, and provides a formaldehyde purification decorative fresco. The mural provided by the invention has an attractive decoration effect, has a formaldehyde purification function and can indicate when the filter material needs to be replaced.

The invention provides a formaldehyde purification decorative mural, which comprises a mural frame, wherein an outer cover, a filter material supporting body and a mural layer are sequentially sleeved in the mural frame; the filter material supporting body is internally filled with a filter material which can absorb formaldehyde and has a fluorescence effect;

the wall painting frame is characterized in that one side edge of the wall painting frame is provided with two adjacent grooves, a transparent inspection window is jointly covered above the two grooves, the inspection window and the two grooves are respectively enclosed to form two independent filtering grid units, the filtering grid units are filled with filtering materials, one filtering grid unit and the two ends of the inspection window are enclosed to form a structure with the periphery sealed, the other filtering grid unit is of a structure with two open ends, and ultraviolet lamp tubes penetrating through the two filtering grid units are further arranged in the inspection window.

In the present invention, preferably, a gap is left between the mural layer and the filter material support body, and the width of the gap is, for example, 3mm to 10mm, so as to facilitate air to enter. In addition, in the hanging process of the mural, the mural layer is generally arranged at the outermost side of the formaldehyde purification decorative mural.

In the invention, the wall painting frame is preferably a cuboid.

In the invention, the filter material support body is composed of a plurality of filter grid units with parallel gas channels, wherein the shape of the filter grid units can be any shape, such as hexagon, circle or square.

In the invention, the filling mode of the filter material is a conventional mode in the field, for example, the filter material is spherical, cylindrical or irregular granular after being formed, and the filter material can be arranged inside the filter grid unit in a physical filling mode or adhered to the surface of the side wall of the filter grid unit in a glue bonding mode.

In the present invention, preferably, the outer cover is a mesh cloth, and the outer cover is used for intercepting the filter material and providing a gas flow inlet and outlet consistent with the parallel gas channels. The aperture of the mesh cloth is smaller than the size of the filter material so as to ensure that the filter material cannot fall out.

In the invention, the filter material is a filter material which presents different colors or gradually-changed colors under ultraviolet light along with the continuous increase of formaldehyde adsorption amount in the field. In order to make the color development characteristic of the filter material play a role, a transparent inspection window is arranged on the side edge of the mural frame, the inspection window is made of transparent glass or acrylic, meanwhile, a filter grid unit with a sealing structure is arranged in the range of the inspection window and serves as a reference module, for example, the reference module is packaged by a transparent glass or acrylic container and is the same with the filter screen in size, and the reference module is not contacted with the outside air, so that the color comparison reference function is realized.

In the invention, the formaldehyde purification decorative fresco is preferably further provided with a power supply part matched with the ultraviolet lamp tube, and the power supply part is generally arranged outside the fresco frame. The ultraviolet lamp tube can provide any single-color or mixed-color ultraviolet light with the wavelength of the ultraviolet light source between 254nm and 400nm, is arranged near the inspection window and can irradiate the filter material of the filter screen main body and the filter material of the reference module at the same time. The power supply part comprises a switch which can control the on and off of the ultraviolet lamp tube.

In the mural painting frame, a slot hole is preferably formed at a position corresponding to an end of the ultraviolet lamp tube, and the slot hole is used for providing a space for connecting the ultraviolet lamp tube and the power supply part.

In the invention, the mural frame preferably further comprises a sealing strip, and the periphery of the mural frame is sealed by the sealing strip finally, so that the periphery of the mural frame keeps airtight, and airflow can only flow through the filter material support body from the parallel gas channel.

In the invention, preferably, the inspection window is provided with a transparent interlayer, and the ultraviolet lamp tube is arranged in the transparent interlayer and is not in direct contact with the filter material of the filter grid unit.

In the invention, preferably, the dynamic adsorption capacity of the filter material is more than or equal to 60mg/g, and the preparation method preferably comprises the following steps: uniformly mixing the porous carrier and the organic amine solution, and drying; wherein the organic amine in the organic amine solution is one or more of polyethyleneimine, polyethylene polyamine and polypropylene amine.

In the invention, the preparation method of the filter material preferably comprises the following steps:

1) uniformly mixing a solution of a noble metal soluble salt, a porous carrier and a protective agent, reducing and drying to obtain an intermediate product;

2) and (3) uniformly mixing the intermediate product with an organic amine solution, and drying.

In the preferred scheme, the fluorescent effect is amplified by utilizing the fluorescent change of polyethyleneimine molecules before and after formaldehyde adsorption and by virtue of noble metal surface plasma resonance, so that the consumption of organic amine loaded on the porous carrier can be really and directly observed.

In the present invention, the porous carrier is preferably one or more of mesoporous molecular sieve, mesoporous silica or alumina aerogel and mesoporous silica gel. Wherein, the type of the mesoporous molecular sieve is preferably SBA15 and/or MCM 41. Wherein, mesoporous has the conventional meaning in the field, and means the aperture is within 2-50 nm.

In the present invention, the organic amine solution is obtained by dissolving organic amine in methanol or ethanol or deionized water according to a conventional method in the art.

In the present invention, the molecular weight of the polyethyleneimine is preferably 600-70000g/mol, more preferably 1800-70000 g/mol.

In the invention, the dosage of the organic amine in the organic amine solution is preferably less than or equal to 0.5g/g of porous carrier.

Wherein the polyethylene polyamine is conventional in the art, such as tetraethylenepentamine and pentaethylenehexamine.

In step 1), the noble metal in the noble metal soluble salt has a meaning conventionally used in the art, and generally means 8 metal elements such as gold (Au), silver (Ag), and platinum group metals (ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), platinum (Pt)), and one or more of Pt, Ag, and Au are preferable in the present invention. More preferably, the noble metal soluble salt is one or more of chloroplatinic acid, chloroauric acid and silver nitrate.

In step 1), the solution of the noble metal soluble salt is obtained by dissolving the noble metal soluble salt in deionized water according to a conventional method in the art. The molar concentration of the noble metal soluble salt in the solution of the noble metal soluble salt is preferably 0.0007 to 0.001 mol/L.

In step 1), the ratio of the mass volume of the porous support to the solution of the noble metal soluble salt is preferably 2g: 20 mL-2 g, 100mL, more preferably 2g: 50 mL.

In step 1), the protecting agent is a substance conventional in the art for protecting porous carriers, preferably polyethylene glycol. Among them, the molecular weight of the polyethylene glycol is preferably 200-. The addition volume of the protective agent is preferably less than or equal to 1mL/g of porous carrier.

In step 1), the mixing is preferably performed according to the following steps: the porous carrier is uniformly dispersed in a solution of a noble metal soluble salt, then a protective agent is added into the solution, and the mixture is uniformly stirred.

In step 1), the reduction is performed by adding a reducing agent, which is a substance that can reduce noble metals, and is conventional in the art, preferably one or more of ascorbic acid, sodium borohydride, potassium borohydride and formic acid in water, and more preferably ascorbic acid in water and/or sodium borohydride in water. In the aqueous solution of ascorbic acid, the concentration of ascorbic acid is preferably 1 mol/L. In the aqueous solution of sodium borohydride, the concentration of sodium borohydride is preferably 1 mol/L. Preferably, the addition molar weight of the reducing agent is 1-3 times of the molar weight of the noble metal soluble salt.

In step 1), before the drying, an operation of removing the solvent is preferably performed. The solvent removal can be carried out according to the procedures conventional in the art: stirring with magnetic force during heating until the solvent is completely volatilized. Wherein, the heating temperature is preferably 60 ℃, and the duration of the heating and stirring is preferably 1 h.

In the step 1), the drying is conventional oven drying. The specific conditions for drying are preferably as follows: at 105 ℃ for 1-10 h.

In the invention, the intermediate product formed in the step 1) is a nano noble metal cluster loaded in a porous carrier pore passage and coated by a protective agent.

In step 2), the mixing is preferably performed according to the following steps: uniformly dispersing the intermediate product obtained in the step 1) in an organic amine solution.

In step 2), before the drying, an operation of removing the solvent is preferably performed. The solvent removal can be carried out according to the procedures conventional in the art: stirring with magnetic force during heating until the solvent is completely volatilized. Wherein the heating temperature is preferably 50-80 ℃.

In the step 2), the drying is conventional oven drying. The specific conditions for drying are preferably as follows: 60-100 deg.C for 1-24h, such as 60-80 deg.C for 12 h.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The reagents and starting materials used in the present invention are commercially available.

The positive progress effects of the invention are as follows: the mural provided by the invention has an attractive decoration effect, has a formaldehyde purification function and can indicate when the filter material needs to be replaced.

Drawings

Fig. 1 is a schematic perspective view of a formaldehyde-purified decorative fresco of example 1 of the present application.

Fig. 2 is a schematic diagram of the exploded structure of fig. 1.

Fig. 3 is a schematic perspective view of the filter material support in example 1.

Fig. 4 is a schematic perspective view of the inspection window of embodiment 1.

Fig. 5 is a rear view of fig. 4.

Fig. 6 is a front view of the inspection window of fig. 5 further including an ultraviolet lamp tube.

Fig. 7 is a schematic perspective view of the ultraviolet lamp tube in fig. 6.

Fig. 8 is a left side view of the inspection window of fig. 2.

Fig. 9 is a schematic perspective view of the mural frame according to embodiment 1.

Fig. 10 is a front view of fig. 9.

The reference numerals are explained below:

outer cover 1

Filter material support body 2

Inspection window 3

Ultraviolet lamp tube 31

Wall painting frame 4

Slotted hole 41

Groove 42

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention. The experimental methods without specifying specific conditions in the following examples were selected according to the conventional methods and conditions, or according to the commercial instructions.