CN112694312A - Antibacterial and antiviral inorganic decorative plate and preparation method thereof - Google Patents
Antibacterial and antiviral inorganic decorative plate and preparation method thereof Download PDFInfo
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Abstract
The invention relates to an antibacterial and antiviral inorganic decorative plate and a preparation method thereof, wherein the antibacterial and antiviral inorganic decorative plate comprises the following components in percentage by weight: 42-66% of inorganic gelled powder, 25-31.6% of surface modification solution, 5.3-16.8% of plant antibacterial and antiviral active liquid, 2.67-8.44% of porous mineral carrier and 0.05-8.4% of reinforcing fiber, wherein the weight percentage of the modifier in the surface modification solution is 2-10%, and the weight percentage of the antibacterial and antiviral active substance in the plant antibacterial and antiviral active liquid is 38-65%. The antibacterial and antiviral inorganic decorative plate has wide antibacterial and antiviral range, better antibacterial and antiviral performance, low preparation cost of the plate and low use cost of killing bacteria and viruses by utilizing the antibacterial and antiviral inorganic decorative plate.
Description
Technical Field
The invention belongs to the technical field of decorative plates, and particularly relates to an antibacterial and antiviral inorganic decorative plate and a preparation method thereof.
Background
Various volatile harmful organic matters, bacteria and viruses exist in the living environment of people, the physical and psychological health of people is directly influenced, and the development of the decorative plate for removing the organic matters, resisting bacteria and viruses not only meets the decorative requirement, but also can ensure the safety of the living environment, and has important significance.
A composite material of algae and calcium, a decorative plate and a production method (CN102515678A) disclose a decorative plate, which is compounded by a calcium-containing inorganic matrix and an algae matrix hydrated gel, and the product has ecological properties such as excellent formaldehyde purification, negative ion induction, self-moisture regulation and the like; a photocatalytic inorganic ecological decorative board and a production method thereof (CN105731969A) disclose that La1-xAxMO3 type (A is Sr, Ca, Ba, M is Mn, Co, x is 0, 0.4) visible light response type catalytic particles and pore-forming foaming load are used for loading a visible light response catalyst into micropores of the inorganic decorative board, the visible light response type catalytic particles have obvious catalytic activity on volatile organic compounds, and the inorganic ecological decorative board has a function of purifying harmful substances by photocatalysis; at present, the ecological performances of the inorganic ecological decorative plate in organic matter purification, negative ion release, self-humidifying and the like are mature.
With the adoption of the antibacterial and antiviral inorganic decorative board, the space of green medical treatment, particularly hospitals, infectious disease health and medical rooms and the like still has a larger blank. The prior art is more about the research of antibacterial materials, and less relates to antibacterial decorative plates, and the antibacterial materials are mainly divided into three types: the first kind is inorganic antibiotic material, which is mainly oxide photocatalytic material and metal ion metal oxide type, and has wide antibiotic spectrum, long acting, no drug resistance and high heat resistanceThe preparation method has the advantages of high cost and heavy metal pollution in the preparation process; the second type is an organic antibacterial material which mainly comprises quaternary ammonium salt, quaternary phosphonium salt, biguanide, alcohol, phenol, organic metal, pyridine and imidazole, and has good antibacterial timeliness, but has the problems of high toxicity, poor durability, drug resistance and the like; the third kind is natural antibacterial material, including plant source, animal source, microorganism source natural antibacterial material, the natural antibacterial material that is applied more at present mainly includes chitin, chitosan and insect antibacterial protein, etc. extracted from animal, but not sufficient to the natural plant development and application with antibacterial action; some technologies relate to antiviral research, for example, an antibacterial antiviral interior wall latex paint and its preparation method (CN1115601193A) discloses that nano bismuth tungstate can be used as antibacterial agent, has inhibitory effect on bacterial virus, H3N2、H1N1The antiviral property reaches 99.5-99.99%, but the bismuth-based composite material needs to be used under good indoor visible light conditions, and the bismuth-based composite material has high cost and can bring heavy metal pollution in the preparation process, so the bismuth-based composite material is not suitable for wide popularization;
the algae-calcium composite material, the decorative plate and the production method (CN102515678B) use the microporous property of diatomite to endow the material with good functions of humidifying, adsorbing harmful gases such as formaldehyde and the like and sterilizing and the like, but the sterilization performance and the antiviral performance of the material are not further researched. A virus insecticide containing diatomite with special structure and its application (CN111165483A) are disclosed, the raw materials for preparing said virus insecticide include diatomite with special structure and armyworm nuclear polyhedrosis virus, the diatomite with special structure is saw-tooth diatomite, which is compounded with the diatomite with special structure and the armyworm nuclear polyhedrosis virus to play the role of synergistic insecticidal effect, and the insecticidal effect is improved by compounding it with virus It has the advantages of no toxicity to mammals and no environmental pollution, and the general diatomite has very limited sterilization and virus killing effects. At present, a decorative plate which can effectively resist bacteria and viruses and can be widely used is not available.
Disclosure of Invention
The technical problem solved by the invention is as follows: the antibacterial and antiviral inorganic decorative plate and the preparation method thereof are provided to solve the technical problem that the antibacterial and antiviral decorative plate which can effectively resist bacteria and viruses is lacked in the prior art.
The invention provides an antibacterial and antiviral inorganic decorative plate which comprises the following components in percentage by weight: 42-66% of inorganic gelled powder, 25-31.6% of surface modification solution, 5.3-16.8% of plant antibacterial and antiviral active liquid, 2.67-8.44% of porous mineral carrier and 0.05-8.4% of reinforcing fiber, wherein the weight percentage of the modifier in the surface modification solution is 2-10%, and the weight percentage of the antibacterial and antiviral active substance in the plant antibacterial and antiviral active liquid is 38-65%.
The antibacterial and antiviral inorganic decorative plate based on the invention has the following technical effects:
(1) the antibacterial range is wide: the plant antibacterial and antiviral active liquid has wide antibacterial and antiviral range by utilizing antibacterial and antiviral active substances such as flavonoids, ketones and other antibacterial and antiviral active substance components, has good antibacterial performance for a plurality of harmful bacteria such as listeria, staphylococcus aureus, colibacillus, fluorescent pseudounicellular bacteria, tomato botrytis cinerea and the like, and has inactivation function for viruses such as H3N2, H1N1 influenza virus, H5N1 avian influenza and the like.
(2) The antibacterial effect is good: the antibacterial and antiviral active substance components such as flavonoids and ketones can be effectively combined with the porous minerals, so that the board has higher active substance loading capacity and good and lasting antibacterial effect; the antibacterial and antiviral active substance and the porous mineral are used for preparing the decorative plate material, and the decorative plate material is applied to indoor rooms, particularly ceilings and wall surfaces of hospitals, can remove peculiar smell of liquid medicine and refresh air, can also play bacteriostatic and bactericidal effects on the air, and reduces the contents of harmful bacteria and influenza viruses in the air, so that the cross infection rate is reduced, and the decorative plate material has very important practical significance for guaranteeing the operating efficiency of hospitals.
(3) The antibacterial and antiviral inorganic decorative plate does not need additional disinfection and killing equipment and energy, can effectively reduce the purchase cost of equipment and facilities of a using unit, the maintenance cost of the equipment and the cost of electric energy, is energy-saving and environment-friendly, is nontoxic and harmless to a human body, does not need to isolate personnel, continuously operates in all weather, and does not influence the normal medical activities such as inquiry, treatment and the like compared with disinfection and killing modes such as disinfectant, ultraviolet light and the like.
On the basis of the scheme, the invention can be further improved as follows:
further, the reinforced fiber is glass fiber, and the inorganic gelled powder is prepared by compounding the following raw materials in percentage by weight: 90-100% of gypsum and 0-10% of cement.
The decorative plate with higher strength can be obtained by the components and the mixture ratio.
Further, the gypsum is selected from one of natural hemihydrate gypsum or industrial gypsum.
The gypsum as the cementing material can be used for cementing slurry into a firm stone-shaped body and cementing other raw materials to prepare the decorative plate with certain mechanical strength.
Preferably, the gypsum is natural hemihydrate gypsum, the granularity of the gypsum is more than or equal to 30 meshes, the wet strength is more than or equal to 2.6MPa, the initial setting time is more than or equal to 4min, and the final setting time is less than or equal to 20 min.
Thus, the obtained decorative plate has good strength.
Specifically, the industrial gypsum is phosphogypsum or desulfurized gypsum.
Further, the surface modification solution is prepared from clear water, polyvinyl alcohol, sodium citrate, methyl potassium silicate and tributyl phosphate according to the weight ratio of 100: (0-2.0): (1.5-2.0): (0.4-0.5): (0.4-0.5) by compounding.
Specifically, the polyvinyl alcohol, the methyl potassium silicate and the tributyl phosphate are all commercially available products.
When pouring and forming are carried out, the gel material is hydrated and gel is hardened, and the modifier can improve the crystal structure morphology of a hydration product, so that excellent physical properties are obtained macroscopically, the appearance texture is fine and smooth, and the gel material has high breaking strength, water resistance, stain resistance and good water resistance.
Further, the plant antibacterial and antiviral active solution is prepared by sequentially soaking mixed powder of antibacterial and antiviral plants in an ethanol solution, performing ultrasonic extraction, performing vacuum filtration, and performing evaporation concentration, wherein the mixed powder is prepared by crushing and mixing the following raw materials in percentage by weight: 62-90% of pomegranate peel, 2-8% of mugwort: 2-10% of houttuynia cordata: 2-10% of camphor leaves: 2-10% of olive leaves; the concentration of ethanol in the ethanol solution is 68-75%.
Through carrying out single-factor tests on a large number of plants including isatis roots, lotus leaves, bamboo leaves, houttuynia cordata, andrographis paniculata, ginkgo leaves, camphor tree leaves, olive leaves, mugwort and pomegranate barks respectively, five types of pomegranate barks, mugwort, houttuynia cordata, camphor leaves and olive leaves are screened out according to the minimum inhibitory concentration of staphylococcus aureus and escherichia coli, and further through orthogonal tests, the five types of plants are determined to have excellent antibacterial and antiviral activities, and the five types of plants have good synergistic effects among active ingredients, particularly good antiviral effects.
The main active ingredients of the pomegranate bark, the artemisia argyi, the houttuynia cordata, the camphor leaves and the olive leaves are volatile oil, flavonoids, phenols, alkaloids and the like, and the above ingredients can be better loaded in a porous mineral load carrier, especially in diatomite; the antibacterial and antiviral active liquid extracted by taking pomegranate rind, mugwort, houttuynia cordata, camphor leaves and olive leaves as raw materials is rich in antibacterial and antiviral active substance components such as various flavonoids and ketones, has wider antibacterial and antiviral range, has better antibacterial performance on a plurality of harmful bacteria such as listeria, staphylococcus aureus, colibacillus, pseudomonas fluorescens and tomato botrytis cinerea, and has inactivation function on viruses such as H3N2, H1N1 influenza virus and H5N1 avian influenza.
Preferably, the fineness of the crushed mixed powder is less than or equal to 180 meshes, the material-liquid ratio during soaking is 1: 10-1: 18, the soaking time is more than or equal to 4 hours, the ultrasonic extraction time is 25-50 min, and the evaporation concentration temperature is 65-78 ℃.
The plant antibacterial and antiviral active liquid with high yield and high antibacterial and antiviral effects can be obtained.
The plant raw material extract is used as the source of the antibacterial and antiviral active substance, the antibacterial and antiviral active substance is loaded in a porous mineral loading mode, and the inorganic cementing material is adopted to prepare the decorative plate by cementing, so that the whole production process is mild, and the decorative plate has the characteristic of high safety no matter the raw material is obtained, the raw material is used, the production process is carried out, or the obtained finished product is obtained.
Preferably, the soaking time is 1: 16.
Further, the plant antibacterial and antiviral active substance comprises a flavonoid substance, and the porous mineral load carrier is prepared by compounding the following raw materials: 60-100% of diatomite, 0-20% of sepiolite and 0-20% of attapulgite.
The diatom has larger specific surface area and a special pore structure, so that the diatom has stronger adsorption capacity, is loaded as a plant antibacterial and antiviral active substance, has large loading capacity and stable loading, and has lasting antiviral and antibacterial effects; and because the diatomite contains a certain amount of ferric oxide and aluminum oxide, aluminum ions and iron ions on the surface can form coordinate bonds with flavonoid antibacterial and antiviral active substances, so that the loading capacity and the loading stability of the flavonoid are improved, and the antibacterial and antiviral activity of the inorganic decorative plate is improved.
Specifically, the diatomite, the sepiolite and the attapulgite are all commercially available products.
The fineness of the porous mineral load carrier is more than or equal to 180 meshes.
Preferably, the diatomite is Fe modified diatomite, Al modified diatomite or Fe-Al modified diatomite.
The modified diatomite has strong acting force and loading capacity on active substances of volatile oil, flavonoids, phenols and alkaloids, and can have high antibacterial and antiviral activity.
The invention also provides a preparation method of the antibacterial and antiviral inorganic decorative plate, which comprises the following steps:
step one, preparing the following components in percentage by weight: 42-66% of inorganic gelled powder, 25-31.6% of surface modification solution, 5.3-16.8% of plant antibacterial and antiviral active liquid, 2.67-8.44% of porous mineral carrier and 0.05-8.4% of reinforcing fiber, wherein the weight percentage of the modifier in the surface modification solution is 2-10%, and the weight percentage of the antibacterial and antiviral active substance in the plant antibacterial and antiviral active liquid is 38-65%.
Step two, mixing and stirring the porous mineral carrier in the step one and the antibacterial and antiviral active liquid to obtain an antibacterial and antiviral porous mineral material adsorbed with antibacterial and antiviral active substances;
step three, preparing slurry: mixing and stirring inorganic gelled powder, surface modification solution, antibacterial and antiviral porous mineral material and reinforcing fiber to obtain slurry;
step four, forming: molding the slurry in a prefabricated texture mold by adopting a casting molding mode;
step five, maintaining and drying: demolding after hydration is finished, and naturally drying, drying in a drying kiln or performing wet-heat curing until the equilibrium water content of the section bar is less than or equal to 4.5 percent to obtain a semi-finished product;
and step six, polishing the dried semi-finished product to obtain the antibacterial and antiviral inorganic decorative plate.
The plant is used as the source of the antibacterial and antiviral active substance, the porous mineral loading mode is adopted to load the antibacterial and antiviral active substance, the inorganic cementing material is adopted to prepare the decorative plate, the whole production process is mild, the preparation cost is low, the characteristics of high safety are realized in the use and production process of the raw materials and the obtained finished product, and the obtained plate has the advantages of high strength, water resistance, deformation resistance, good antibacterial effect and durability.
Preferably, the porous mineral carrier is added into the antibacterial and antiviral active solution to be soaked, and vibration and stirring are assisted, so that the loading efficiency of the antibacterial and antiviral active substance is improved.
Further, the surface treatment also comprises the step of spraying a coating on the surface of the polished plate to obtain the antibacterial and antiviral inorganic decorative plate, wherein the antibacterial and antiviral active substance content in the coating is 0-1.0%.
The coating is sprayed on the finished plate, so that the service life of the plate can be prolonged, and the antibacterial and antiviral active substance is coated on the surface of the finished plate along with the coating, so that the antibacterial and antiviral effects of the plate can be further improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a flow chart of the preparation process of the antibacterial and antiviral inorganic decorative plate material according to the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention is intended to be illustrative, and not to be construed as limiting the invention.
Example 1:
as shown in fig. 1, a method for preparing an inorganic decorative plate with antibacterial and antiviral effects specifically comprises the following steps (the following raw materials are used in parts by weight):
s1, preparing an antibacterial and antiviral active liquid: sequentially crushing 62 parts of pomegranate rind, 8 parts of artemisia argyi, 10 parts of houttuynia cordata, 10 parts of camphor leaves and 10 parts of olive leaves to 180 meshes, soaking the crushed pomegranate rind, the crushed artemisia argyi and the crushed olive leaves in 70% ethanol for 4.5 hours according to a material-liquid ratio of 1:12, performing ultrasonic extraction for 30min, performing vacuum filtration, heating and evaporating the extracted pomegranate rind at a heating temperature of 70 ℃ for 30min to 100 parts, and taking 6 parts for later use;
s2, preparing a porous mineral carrier: 80 parts of diatomite, 10 parts of sepiolite and 10 parts of attapulgite, the fineness requirement is more than or equal to 180 meshes, the raw materials are uniformly stirred, and 12 parts of the raw materials are taken for later use;
s3, preparation of inorganic gel powder: 90 parts of natural high-strength gypsum and 10 parts of white cement are mixed uniformly in a dry powder manner, and 55.5 parts of inorganic gelled powder is taken for later use.
S4, preparing a surface modification solution: sequentially mixing clear water, polyvinyl alcohol, sodium citrate, methyl potassium silicate and tributyl phosphate according to the weight ratio of 100: 1.0: 0.3: 1.8: 0.5 portion of the mixture is added and evenly stirred, and 25.3 portions are taken for standby.
S5, preparing the antibacterial and antiviral porous mineral material, namely soaking 12 parts of the porous mineral carrier obtained in the step S2 and 6 parts of the antibacterial and antiviral active solution obtained in the step S1, and stirring for 45min with vibration to form a paste;
s6, preparing slurry: mixing and stirring 55.5 parts of inorganic gelled powder obtained in the step S3, 25.3 parts of surface modification solution obtained in the step S4, 18 parts of antibacterial and antiviral functional material obtained in the step S5 and 1.2 parts of glass fiber;
s7, molding: molding the slurry in a prefabricated texture mold by adopting a casting molding mode;
s8, maintaining and drying: demoulding after hydration is finished, and naturally airing until the water content is less than or equal to 3.5%;
s9, surface treatment: drying and then grinding to obtain a finished plate;
s10, spraying paint: spraying the interior wall coating according to the spraying amount of 45 grams per square meter, drying the coating, and packaging to obtain the antibacterial and antiviral inorganic decorative plate.
Example 2:
a preparation method of an antibacterial and antiviral inorganic decorative plate specifically comprises the following steps (the following raw materials are used in parts by weight):
s1, preparing an antibacterial and antiviral active liquid: sequentially crushing 90 parts of pomegranate rind, 10 parts of houttuynia cordata, 2 parts of artemisia argyi, 2 parts of houttuynia cordata, 2 parts of camphor leaves and 2 parts of olive leaves to 180 meshes, soaking the crushed pomegranate rind, houttuynia cordata, 2 parts of artemisia argyi and 2 parts of olive leaves in 72% ethanol for 6 hours according to a material-liquid ratio of 1:15, performing ultrasonic extraction for 45 minutes, performing vacuum filtration, heating and evaporating, heating at a temperature of 68 ℃, heating for 30 minutes, evaporating to 100 parts, and taking 12 parts for later use;
s2, preparing a porous mineral carrier: 3 parts of refined diatomite for later use.
S3, preparation of inorganic gel powder: 59 parts of desulfurized gypsum for later use.
S4, preparing a surface modification solution: sequentially mixing clear water, polyvinyl alcohol, sodium citrate, methyl potassium silicate and tributyl phosphate according to the weight ratio of 100: 0.8: 0.5: 1.5: 0.5 portion of the mixture is added and evenly stirred, and 25 portions are taken for standby.
S5, preparing the antibacterial and antiviral porous mineral material: mixing and soaking 3 parts of refined diatomite of S2 and 12 parts of antibacterial and antiviral active liquid obtained in S1, and stirring for 60min under vibration to form slurry;
s6, preparing slurry: 59 parts of desulfurized gypsum, 25 parts of surface modification solution obtained by S4, 15 parts of antibacterial and antiviral functional material obtained by S5 and 1 part of glass fiber are mixed and stirred;
s7, molding: molding the slurry in a prefabricated texture mold by adopting a casting molding mode;
s8, maintaining and drying: demoulding after hydration is finished, and naturally airing until the water content is less than or equal to 3.5%;
s9, surface treatment: and drying and then grinding to obtain a finished plate.
S10, spraying a coating, namely spraying an inner wall coating according to the spraying amount of 45 grams per square meter, drying the coating, and packaging to obtain the antibacterial and antiviral inorganic decorative plate.
Example 3:
a preparation method of an antibacterial and antiviral inorganic decorative plate specifically comprises the following steps (the following raw materials are used in parts by weight):
s1, preparing an antibacterial and antiviral active liquid: sequentially crushing 62 parts of pomegranate rind, 8 parts of artemisia argyi, 10 parts of houttuynia cordata, 10 parts of camphor leaves and 10 parts of olive leaves into 180 meshes, soaking the crushed pomegranate rind, the crushed artemisia argyi, the crushed houttuynia cordata, the crushed camphor leaves and the crushed olive leaves in 68% ethanol for 36 hours according to the material-liquid ratio of 1:10, performing ultrasonic extraction for 50 minutes, performing vacuum filtration, heating and evaporating the obtained product at the heating temperature of 72 ℃ for 30 minutes until 100 parts of the obtained product are obtained, and taking 16.8 parts;
s2, preparing a porous mineral carrier: 3 parts of refined diatomite and 1 part of attapulgite are uniformly mixed for later use.
S3, preparation of inorganic gel powder: 5 parts of high-strength gypsum powder, 88 parts of common natural gypsum and 7 parts of white cement are uniformly mixed, and 42 parts of mixed inorganic gel powder are taken for later use.
S4, preparing a surface modification solution: sequentially mixing clear water, polyvinyl alcohol, sodium citrate, methyl potassium silicate and tributyl phosphate according to the weight ratio of 100: 0.8: 0.5: 1.5: 0.5 portion of the mixture is added and evenly stirred, and 25 portions are taken for standby.
S5, preparing the antibacterial and antiviral porous mineral material: mixing and soaking 4 parts of carrier prepared in S2 and 16.8 parts of antibacterial and antiviral active liquid prepared in S1, stirring with vibration for 60min to form slurry, and taking 15 parts for later use;
s6, preparing slurry: mixing and stirring 42 parts of inorganic gelled powder obtained in the step S3, 25 parts of surface modification solution obtained in the step S4, 15 parts of antibacterial and antiviral functional material obtained in the step S2 and 1.5 parts of glass fiber;
s7, molding: molding the slurry in a prefabricated texture mold by adopting a casting molding mode;
s8, maintaining and drying: demoulding after hydration is finished, and naturally airing until the water content is less than or equal to 3.5%;
s9, surface treatment: and drying and then grinding to obtain a finished plate.
S10, spraying paint: spraying the interior wall coating according to the spraying amount of 45 grams per square meter, drying the coating, and packaging to obtain the antibacterial and antiviral inorganic decorative plate.
Comparative example 1:
compared with the example 3, the specific preparation process is different only in that: the preparation process does not add porous mineral carrier.
Comparative example 2:
compared with the example 3, the specific preparation process is different only in that: the preparation process does not add antibacterial and antiviral active liquid.
Comparative example 3:
compared with the example 3, the specific preparation process is different only in that: and the surface modification solution is not added in the S6, so that the obtained product has the advantages of obvious rough surface appearance, low breaking strength and high water absorption rate.
Examples 4 to 8: compared with the example 3, the specific preparation process is different only in that: the plants in S1 were prepared by selecting pericarpium granati (example 4), folium artemisiae argyi (example 5), herba houttuyniae (example 6), folium cinnamomi camphorae (example 7), and folium olivae (example 8) having the same total weight as the pericarpium granati, folium artemisiae argyi, herba houttuyniae, folium cinnamomi camphorae, and folium olivae in example 3, respectively, as the antibacterial and antiviral active solution.
Products prepared in the embodiments 1-3 and the comparative examples 1-3 are subjected to antibacterial property measurement and antibacterial effect measurement according to JC/T799-2007 decorative gypsum boards, HG/T3950-27 antibacterial coatings and GBT21866-2008 antibacterial coatings (paint films).
The key indicators were tested and the results are shown in table 1:
TABLE 1 antibacterial and antiviral Property test results of the inorganic decorative sheets prepared in examples 1 to 3 and comparative examples 1 to 3
Products prepared in examples 4-8 were tested for antibacterial property and antibacterial effect according to JC/T799-2007 decorative plasterboard, HG/T3950-27 antibacterial paint, and reference GBT21866-2008 antibacterial paint (paint film).
TABLE 2 antibacterial and antiviral Properties of the inorganic decorative sheets prepared in examples 4 to 8
As can be seen from tables 1 and 2, according to the preparation method of the antibacterial and antiviral inorganic decorative plate, the crystal structure morphology of the hydration product is improved by the modifier, so that the inorganic decorative plate has fine and smooth appearance texture, high breaking strength, water resistance, stain resistance and good water resistance; the antibacterial and antiviral active liquid obtained based on the pomegranate bark, the artemisia argyi, the houttuynia cordata, the camphor leaves and the olive leaves has wider antibacterial and antiviral range, has better antibacterial performance on staphylococcus aureus, colibacillus, aspergillus niger, aspergillus terreus and other harmful bacteria, has excellent inactivation performance on H3N2, H1N1 influenza virus, H5N1 avian influenza and other viruses, and is far superior to the antibacterial and antiviral active liquid of the single pomegranate bark, the artemisia argyi, the houttuynia cordata, the camphor leaves or the olive leaves; and the antibacterial and antiviral active substance is loaded by adopting the porous mineral diatomite, so that the plate has higher active substance loading capacity, the antibacterial and antiviral effect of the decorative plate is better than that of a single antibacterial and antiviral active liquid, the antibacterial and antiviral performance is obviously improved, and the antibacterial and antiviral inorganic decorative plate based on the porous mineral diatomite has good application prospect.
Although embodiments of the present invention have been described in detail above, those of ordinary skill in the art will understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The antibacterial and antiviral inorganic decorative plate is characterized by comprising the following components in percentage by weight: 42-66% of inorganic gelled powder, 25-31.6% of surface modification solution, 5.3-16.8% of plant antibacterial and antiviral active liquid, 2.67-8.44% of porous mineral carrier and 0.05-8.4% of reinforcing fiber, wherein the weight percentage of the modifier in the surface modification solution is 2-10%, and the weight percentage of the antibacterial and antiviral active substance in the plant antibacterial and antiviral active liquid is 38-65%.
2. The antibacterial and antiviral inorganic decorative plate as claimed in claim 1, wherein the reinforcing fiber is glass fiber, and the inorganic gel powder is prepared by compounding the following raw materials in percentage by weight: 90-100% of gypsum and 0-10% of cement.
3. The antibacterial and antiviral inorganic decorative sheet as claimed in claim 2, wherein the gypsum is one selected from natural hemihydrate gypsum or industrial gypsum.
4. The antibacterial and antiviral inorganic decorative plate as claimed in claim 1, wherein the surface modification solution is prepared from clear water, polyvinyl alcohol, sodium citrate, potassium methyl silicate, tributyl phosphate in a weight ratio of 100: (0-2.0): (1.5-2.0): (0.4-0.5): (0.4-0.5) by compounding.
5. The antibacterial and antiviral inorganic decorative plate as claimed in claim 1, wherein the plant antibacterial and antiviral active liquid is prepared by sequentially soaking mixed powder of antibacterial and antiviral plants in an ethanol solution, performing ultrasonic extraction, performing vacuum filtration, and performing evaporation concentration, wherein the mixed powder is prepared by crushing and mixing the following raw materials in percentage by weight: 62-90% of pomegranate peel, 2-8% of mugwort: 2-10% of houttuynia cordata: 2-10% of camphor leaves: 2-10% of olive leaves; the concentration of ethanol in the ethanol solution is 68-75%.
6. The antibacterial and antiviral inorganic decorative plate material as claimed in claim 1, wherein the plant antibacterial and antiviral active substance comprises a flavonoid substance, and the porous mineral load carrier is compounded by the following raw materials: 60-100% of diatomite, 0-20% of sepiolite and 0-20% of attapulgite.
7. The antibacterial and antiviral inorganic decorative sheet material as claimed in claim 1, wherein the purified diatomite is Fe-modified purified diatomite, Al-modified purified diatomite or Fe and Al-modified purified diatomite.
8. The preparation method of the antibacterial and antiviral inorganic decorative plate is characterized by comprising the following steps:
step one, preparing the following components in percentage by weight: 42-66% of inorganic gelled powder, 25-31.6% of surface modification solution, 5.3-16.8% of plant antibacterial and antiviral active liquid, 2.67-8.44% of porous mineral carrier and 0.05-8.4% of reinforcing fiber, wherein the weight percentage of the modifier in the surface modification solution is 2-10%, and the weight percentage of antibacterial and antiviral active substance in the plant antibacterial and antiviral active liquid is 38-65%;
step two, preparing the antibacterial and antiviral porous mineral material, namely mixing the porous mineral carrier in the step one with the antibacterial and antiviral active liquid, and stirring to obtain the antibacterial and antiviral porous mineral material adsorbed with antibacterial and antiviral active substances;
step three, preparing slurry: mixing and stirring inorganic gelled powder, surface modification solution, antibacterial and antiviral porous mineral material and reinforcing fiber to obtain slurry;
step four, forming: molding the slurry in a prefabricated texture mold by adopting a casting molding mode;
step five, maintaining and drying: demolding after hydration is finished, and drying the section bar by natural drying and drying kiln until the equilibrium water content of the section bar is less than or equal to 4.5 percent to obtain a semi-finished product;
step six, surface treatment: and polishing the dried semi-finished product to obtain the antibacterial and antiviral inorganic decorative plate.
9. The method for preparing the antibacterial and antiviral inorganic decorative plate material as claimed in claim 8, wherein the surface treatment further comprises spraying a coating on the surface of the plate material after the grinding treatment to obtain the antibacterial and antiviral inorganic decorative plate material, wherein the content of the antibacterial and antiviral active substance in the coating is 0-1.0%.
10. The method for preparing the antibacterial and antiviral inorganic decorative plate as claimed in claim 8, wherein when natural drying is adopted in the fifth step, the natural drying time is 3-5 days; and when the drying kiln is adopted for drying in the fifth step, the drying temperature is 50-65 ℃, and the drying time is 10-12 hours.
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| CN116198186A (en) * | 2023-03-13 | 2023-06-02 | 惠州优比贝柠科技股份有限公司 | Preparation method of noise-reduction composite insulation board |
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