CN111546458A - Antibacterial and stain-resistant green environment-friendly decorative sheet and preparation method thereof - Google Patents
Antibacterial and stain-resistant green environment-friendly decorative sheet and preparation method thereof Download PDFInfo
- Publication number
- CN111546458A CN111546458A CN202010450841.8A CN202010450841A CN111546458A CN 111546458 A CN111546458 A CN 111546458A CN 202010450841 A CN202010450841 A CN 202010450841A CN 111546458 A CN111546458 A CN 111546458A
- Authority
- CN
- China
- Prior art keywords
- sheet
- chitosan
- dimethyl sulfoxide
- sodium hydroxide
- stain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
The invention relates to the field of environment-friendly decorative materials, and provides a bacteriostatic and stain-resistant green environment-friendly decorative sheet and a preparation method thereof. According to the preparation method, on one hand, chitosan is sulfhydrylated, and silver ions are fixed in pores on the surface of the loofah sponge sheet by utilizing the coordination effect of sulfhydryl and silver ions, so that the sheet is endowed with good bacteriostatic ability; on the other hand, chitosan is carboxylated, and a chitosan/loofah sponge crosslinked layer is formed on the surface of the sheet by utilizing the esterification reaction of chitosan carboxyl and loofah sponge fiber hydroxyl, so that the surface pore resistance is reduced, pollutants are not easy to accumulate on the surface of the sheet, and the sheet is endowed with good stain resistance.
Description
Technical Field
The invention belongs to the technical field of environment-friendly decorative materials, and provides a bacteriostatic and stain-resistant environment-friendly decorative sheet and a preparation method thereof.
Background
With the development of society and the continuous improvement of living standard, people have diversified requirements on indoor or interior decoration materials of vehicles, and the requirements on beauty, environmental protection and health are relatively important requirements. The decorative sheet has the advantages of good workability, easy modeling, being applicable to different parts, and the like, so that the decorative sheet is more and more widely applied.
The loofah sponge has the advantages of light weight, strong toughness, wear resistance, high elasticity and the like, is easy to mold, can be compounded with various materials, has natural textures, and can generate good visual effect by printing patterns on the surface of the sheet made of the loofah sponge. Especially, after the loofah sponge is pressed into the sheet, compared with a plastic sheet, the loofah sponge has the following advantages: firstly, the loofah sponge sheet is soft, has the anti-collision effect when being used on the bed head of a bedroom, the wall corner bulge and the like, and has good safety; secondly, the loofah sponge sheet does not release gaseous pollutants such as aldehydes, benzene and the like, and has good environmental protection; thirdly, the loofah sponge has wide sources, low price and good economical efficiency.
However, since the loofah sponge has rich pores and strong hydrophilicity, the decorative sheet made of the loofah sponge is easy to breed bacteria in a humid environment, and the bacteriostatic ability of the sheet needs to be improved, and pollutants are easy to accumulate on the surface of the sheet, so that the stain resistance of the sheet needs to be improved.
Disclosure of Invention
In view of the above, the invention provides a bacteriostatic and stain-resistant green and environment-friendly decorative sheet and a preparation method thereof, on one hand, chitosan is sulfhydrylated, and silver ions are fixed in pores on the surface of a loofah sponge sheet by utilizing the coordination effect of sulfhydryl and silver ions, so that the sheet is endowed with good bacteriostatic ability; on the other hand, chitosan is carboxylated, and a chitosan/loofah sponge crosslinked layer is formed on the surface of the sheet by utilizing the esterification reaction of chitosan carboxyl and loofah sponge fiber hydroxyl, so that the surface pore resistance is reduced, pollutants are not easy to accumulate on the surface of the sheet, and the sheet is endowed with good stain resistance.
In order to achieve the purpose, the invention relates to the following specific technical scheme:
a preparation method of a bacteriostatic and stain-resistant green environment-friendly decorative sheet comprises the following specific steps:
(1) adding chitosan into a sodium hydroxide aqueous solution, stirring at the rotating speed of 150-200 rpm for 1-2 h, adding dimethyl sulfoxide, stirring for 10min, heating to 60 ℃, adding an ethanol solution of o-mercaptobenzoic acid, continuously heating to 70-80 ℃, reacting for 4-6 h, cooling, filtering, washing, and vacuum drying to obtain thiolated chitosan;
(2) adding thiolated chitosan into a sodium hydroxide aqueous solution, stirring at a rotating speed of 150-200 rpm for 1-2 hours, adding dimethyl sulfoxide, stirring for 10 minutes, adding a dimethyl sulfoxide solution of chloroacetic acid, stirring for 10 minutes, heating to 60-70 ℃, reacting for 5-6 hours, cooling, filtering, washing, and vacuum drying to obtain carboxylated-thiolated chitosan;
(3) cleaning retinervus Luffae fructus with deionized water, soaking in sodium hydroxide water solution for 2 hr, taking out, cleaning with deionized water, oven drying, and pressing into sheet;
(4) adding the carboxylated-sulfhydrylated chitosan into a sodium hydroxide aqueous solution, stirring at the rotating speed of 150-200 rpm for 1-2 hours, adding dimethyl sulfoxide, stirring for 10min, uniformly spraying the mixture on the surface of the loofah sponge sheet, and standing for 10 min;
(5) uniformly spraying silver nitrate solution on the surface of the loofah sponge sheet, and standing for 10 min;
(6) adding 1-butyl-3-methylimidazole dihydrogen phosphate and isoprene glycol into toluene, uniformly spraying the mixture on the surface of the loofah sponge sheet, heating the surface of the sheet to 120-130 ℃ by using microwaves, stopping heating after 2 hours, repeatedly cleaning the sheet by using deionized water, and drying to obtain the antibacterial and stain-resistant chitosan/loofah sponge green environment-friendly decorative sheet.
Preferably, the mass concentration of the sodium hydroxide aqueous solution is 5-8%.
Preferably, the mass concentration of the ethanol solution of o-mercaptobenzoic acid is 3%.
Preferably, the mass concentration of the dimethyl sulfoxide solution of chloroacetic acid is 20-25%.
Preferably, the mass concentration of the silver nitrate solution is 1.5%.
Preferably, in the step (1), the mass ratio of the chitosan, the sodium hydroxide aqueous solution, the dimethyl sulfoxide and the o-mercaptobenzoic acid ethanol solution is 10-12: 30: 70: 20 to 25.
Preferably, in the step (2), the mass ratio of the thiolated chitosan to the aqueous solution of sodium hydroxide to the solution of dimethyl sulfoxide and chloroacetic acid is 10-12: 30: 70: 20 to 22.
Preferably, in the step (4), the mass ratio of the carboxylated-thiolated chitosan to the aqueous solution of sodium hydroxide to the dimethyl sulfoxide is 10-12: 30: 70.
preferably, the spraying amount in the step (4) is 500-800 g/m2。
Preferably, the spraying amount in the step (5) is 50-100 g/m2。
Preferably, in the step (6), the mass ratio of 1-butyl-3-methylimidazole dihydrogen phosphate to isoprene glycol to toluene is 6-8: 2-5: 100.
preferably, the spraying amount in the step (6) is 100-120 g/m2。
According to the invention, firstly, o-mercaptobenzoic acid is adopted to modify chitosan to obtain thiolated chitosan, and then chloroacetic acid is adopted to modify the thiolated chitosan to obtain carboxylated-thiolated chitosan (the modification process is shown in figure 1). Mixing the carboxylated-sulfhydrylated chitosan, sodium hydroxide solution and dimethyl sulfoxide, spraying the mixture on the surface of the loofah sponge sheet, and standing the loofah sponge sheet to enable the loofah sponge sheet to be fully adsorbed into pores on the surface of the sheet. And spraying a silver nitrate solution on the surface of the sheet, and fixing silver ions in pores on the surface of the loofah sponge sheet by utilizing the coordination effect of sulfydryl and the silver ions to endow the sheet with bacteriostatic ability. And spraying 1-butyl-3-methylimidazole dihydrogen phosphate and isoprene glycol on the surface of the sheet, wherein the isoprene glycol is used as a crosslinking accelerator, the 1-butyl-3-methylimidazole dihydrogen phosphate is used as an esterification catalyst, performing esterification reaction on hydroxyl of the loofah sponge cellosilk and carboxyl of chitosan by microwave heating, and finally forming a chitosan/loofah sponge crosslinking layer on the surface of the sheet, so that the surface pore resistance is reduced, pollutants are not easy to accumulate on the surface of the sheet, and the stain resistance of the sheet is endowed.
The invention also provides the antibacterial and stain-resistant green environment-friendly decorative sheet prepared by the preparation method. The surface layer of the green environment-friendly decorative sheet is a chitosan/loofah sponge cross-linked layer, and silver ions are complexed, so that the green environment-friendly decorative sheet has good bacteriostatic ability and stain resistance.
The invention provides a bacteriostatic and stain-resistant green environment-friendly decorative sheet and a preparation method thereof, and compared with the prior art, the bacteriostatic and stain-resistant green environment-friendly decorative sheet has the outstanding characteristics and excellent effects that:
1. the preparation method of the invention takes environment-friendly loofah sponge and chitosan as main raw materials, has wide sources and low price, and the decorative sheet has good environment-friendly property and good economical efficiency.
2. According to the preparation method, chitosan is sulfhydrylated, and silver ions are fixed in pores on the surface of the loofah sponge sheet by utilizing the coordination effect of sulfhydryl and silver ions, so that the sheet is endowed with good bacteriostatic ability.
3. According to the preparation method, chitosan is carboxylated, and a chitosan/loofah sponge cross-linked layer is formed on the surface of the sheet by utilizing the esterification reaction of chitosan carboxyl and loofah sponge fiber silk hydroxyl, so that the surface pore resistance is reduced, pollutants are not easy to accumulate on the surface of the sheet, and the sheet is endowed with good stain resistance.
Drawings
FIG. 1: the sulfhydrylation and carboxylation modification processes of chitosan are schematically shown.
FIG. 2: photograph of the surface of the sheet obtained in example 5 after being stepped on for 14 d.
FIG. 3: photograph of the surface of the sheet obtained in comparative example 1 after treading for 14 d.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but it should not be construed that the scope of the present invention is limited to the following examples. Various substitutions and alterations can be made by those skilled in the art and by conventional means without departing from the spirit of the method of the invention described above.
Example 1
(1) Adding chitosan into sodium hydroxide aqueous solution, stirring at the rotating speed of 150rpm for 1h, adding dimethyl sulfoxide, stirring for 10min, heating to 60 ℃, adding ethanol solution of o-mercaptobenzoic acid, continuing heating to 70 ℃, reacting for 6h, cooling, filtering, washing, and vacuum drying to obtain thiolated chitosan; the mass ratio of the chitosan to the sodium hydroxide aqueous solution to the ethanol solution of dimethyl sulfoxide to o-mercaptobenzoic acid is 12: 30: 70: 25;
(2) adding thiolated chitosan into a sodium hydroxide aqueous solution, stirring at the rotating speed of 150rpm for 1h, adding dimethyl sulfoxide, stirring for 10min, then adding a dimethyl sulfoxide solution of chloroacetic acid, stirring for 10min, heating to 70 ℃, reacting for 5h, cooling, filtering, washing, and drying in vacuum to obtain carboxylated-thiolated chitosan; the mass ratio of the thiolated chitosan to the sodium hydroxide aqueous solution to the dimethyl sulfoxide solution of dimethyl sulfoxide to chloroacetic acid is 12: 30: 70: 20;
(3) cleaning retinervus Luffae fructus with deionized water, soaking in sodium hydroxide water solution for 2 hr, taking out, cleaning with deionized water, oven drying, and pressing into sheet;
(4) adding carboxylated-thiolated chitosan into sodium hydroxide water solution, stirring at 150rpm for 1 hr, adding dimethyl sulfoxide, stirring for 10min, and uniformly spraying onto the surface of retinervus Luffae fructus sheet with a spraying amount of 500g/m2Standing for 10 min; the mass ratio of the carboxylated-thiolated chitosan to the aqueous solution of sodium hydroxide to the dimethyl sulfoxide is 10: 30: 70;
(5) uniformly spraying silver nitrate solution on the surface of the loofah sponge sheet, wherein the spraying amount is 50g/m2Standing for 10 min;
(6) adding 1-butyl-3-methylimidazole dihydrogen phosphate and isoprene glycol into toluene, and uniformly spraying onto the surface of retinervus Luffae fructus sheet at a concentration of 100g/m2Heating the surface of the sheet to 120 ℃ by adopting microwave, stopping heating after 2h, repeatedly cleaning the sheet by adopting deionized water, and drying to obtain the antibacterial and stain-resistant chitosan/loofah sponge environment-friendly decorative sheet; the mass ratio of 1-butyl-3-methylimidazole dihydrogen phosphate to isoprene glycol to toluene is 8: 2: 100, respectively;
the following steps: the mass concentration of the sodium hydroxide aqueous solution is 5 percent; the mass concentration of the ethanol solution of o-mercaptobenzoic acid is 3 percent; the mass concentration of the dimethyl sulfoxide solution of chloroacetic acid is 25 percent; the mass concentration of the silver nitrate solution is 1.5%.
Example 2
(1) Adding chitosan into sodium hydroxide aqueous solution, stirring at the rotation speed of 200rpm for 1h, adding dimethyl sulfoxide, stirring for 10min, heating to 60 ℃, adding ethanol solution of o-mercaptobenzoic acid, continuing heating to 70 ℃, reacting for 5h, cooling, filtering, washing, and vacuum drying to obtain thiolated chitosan; the mass ratio of the chitosan to the sodium hydroxide aqueous solution to the ethanol solution of dimethyl sulfoxide to o-mercaptobenzoic acid is 10: 30: 70: 25;
(2) adding thiolated chitosan into a sodium hydroxide aqueous solution, stirring at the rotating speed of 200rpm for 1h, adding dimethyl sulfoxide, stirring for 10min, then adding a dimethyl sulfoxide solution of chloroacetic acid, stirring for 10min, heating to 70 ℃, reacting for 6h, cooling, filtering, washing, and drying in vacuum to obtain carboxylated-thiolated chitosan; the mass ratio of the thiolated chitosan to the sodium hydroxide aqueous solution to the dimethyl sulfoxide solution of dimethyl sulfoxide and chloroacetic acid is 10: 30: 70: 22;
(3) cleaning retinervus Luffae fructus with deionized water, soaking in sodium hydroxide water solution for 2 hr, taking out, cleaning with deionized water, oven drying, and pressing into sheet;
(4) adding carboxylated-thiolated chitosan into sodium hydroxide water solution, stirring at 200rpm for 1 hr, adding dimethyl sulfoxide, stirring for 10min, and uniformly spraying onto the surface of retinervus Luffae fructus sheet with spraying amount of 800g/m2Standing for 10 min; the mass ratio of the carboxylated-thiolated chitosan to the aqueous solution of sodium hydroxide to the dimethyl sulfoxide is 12: 30: 70;
(5) uniformly spraying silver nitrate solution on the surface of the loofah sponge sheet, wherein the spraying amount is 100g/m2Standing for 10 min;
(6) adding 1-butyl-3-methylimidazole dihydrogen phosphate and isoprene glycol into toluene, and uniformly spraying onto the surface of retinervus Luffae fructus sheet at a concentration of 120g/m2Heating the surface of the sheet to 130 ℃ by adopting microwave, stopping heating after 2 hours, repeatedly cleaning the sheet by adopting deionized water, and drying to obtain the antibacterial and stain-resistant chitosan/loofah sponge environment-friendly decorative sheet; the mass ratio of 1-butyl-3-methylimidazole dihydrogen phosphate to isoprene glycol to toluene is 8: 5: 100, respectively;
the following steps: the mass concentration of the sodium hydroxide aqueous solution is 8 percent; the mass concentration of the ethanol solution of o-mercaptobenzoic acid is 3 percent; the mass concentration of the dimethyl sulfoxide solution of chloroacetic acid is 20 percent; the mass concentration of the silver nitrate solution is 1.5%.
Example 3
(1) Adding chitosan into sodium hydroxide aqueous solution, stirring at the rotating speed of 180rpm for 2h, adding dimethyl sulfoxide, stirring for 10min, heating to 60 ℃, adding ethanol solution of o-mercaptobenzoic acid, continuing heating to 80 ℃, reacting for 4h, cooling, filtering, washing, and vacuum drying to obtain thiolated chitosan; the mass ratio of the chitosan to the sodium hydroxide aqueous solution to the ethanol solution of dimethyl sulfoxide to o-mercaptobenzoic acid is 11: 30: 70: 20;
(2) adding thiolated chitosan into a sodium hydroxide aqueous solution, stirring at a rotating speed of 180rpm for 2 hours, adding dimethyl sulfoxide, stirring for 10 minutes, then adding a dimethyl sulfoxide solution of chloroacetic acid, stirring for 10 minutes, heating to 60 ℃, reacting for 6 hours, cooling, filtering, washing, and drying in vacuum to obtain carboxylated-thiolated chitosan; the mass ratio of the thiolated chitosan to the sodium hydroxide aqueous solution to the dimethyl sulfoxide solution of dimethyl sulfoxide and chloroacetic acid is 10: 30: 70: 21;
(3) cleaning retinervus Luffae fructus with deionized water, soaking in sodium hydroxide water solution for 2 hr, taking out, cleaning with deionized water, oven drying, and pressing into sheet;
(4) adding carboxylated-thiolated chitosan into sodium hydroxide water solution, stirring at 180rpm for 2 hr, adding dimethyl sulfoxide, stirring for 10min, and uniformly spraying onto the surface of retinervus Luffae fructus sheet with a spraying amount of 700g/m2Standing for 10 min; the mass ratio of the carboxylated-thiolated chitosan to the aqueous solution of sodium hydroxide to the dimethyl sulfoxide is 11: 30: 70;
(5) uniformly spraying silver nitrate solution on the surface of the loofah sponge sheet, wherein the spraying amount is 70 g/m2Standing for 10 min;
(6) adding 1-butyl-3-methylimidazole dihydrogen phosphate and isoprene glycol into toluene, and uniformly spraying onto the surface of loofah sponge sheet at a concentration of 110g/m2Heating the surface of the sheet to 125 ℃ by adopting microwave, stopping heating after 2 hours, repeatedly cleaning the sheet by adopting deionized water, and drying to obtain the antibacterial and stain-resistant chitosan/loofah sponge environment-friendly decorative sheet; the mass ratio of 1-butyl-3-methylimidazole dihydrogen phosphate to isoprene glycol to toluene is 7: 3: 100, respectively;
the following steps: the mass concentration of the sodium hydroxide aqueous solution is 6 percent; the mass concentration of the ethanol solution of o-mercaptobenzoic acid is 3 percent; the mass concentration of the dimethyl sulfoxide solution of chloroacetic acid is 21 percent; the mass concentration of the silver nitrate solution is 1.5%.
Example 4
(1) Adding chitosan into sodium hydroxide aqueous solution, stirring at the rotating speed of 150rpm for 2h, adding dimethyl sulfoxide, stirring for 10min, heating to 60 ℃, adding ethanol solution of o-mercaptobenzoic acid, continuing heating to 72 ℃, reacting for 6h, cooling, filtering, washing, and vacuum drying to obtain thiolated chitosan; the mass ratio of the chitosan to the sodium hydroxide aqueous solution to the ethanol solution of dimethyl sulfoxide to o-mercaptobenzoic acid is 10: 30: 70: 22;
(2) adding thiolated chitosan into a sodium hydroxide aqueous solution, stirring for 2 hours at the rotating speed of 150rpm, adding dimethyl sulfoxide, stirring for 10 minutes, then adding a dimethyl sulfoxide solution of chloroacetic acid, stirring for 10 minutes, heating to 68 ℃, reacting for 5 hours, cooling, filtering, washing, and drying in vacuum to obtain carboxylated-thiolated chitosan; the mass ratio of the thiolated chitosan to the sodium hydroxide aqueous solution to the dimethyl sulfoxide solution of dimethyl sulfoxide to chloroacetic acid is 11: 30: 70: 20;
(3) cleaning retinervus Luffae fructus with deionized water, soaking in sodium hydroxide water solution for 2 hr, taking out, cleaning with deionized water, oven drying, and pressing into sheet;
(4) adding carboxylated-thiolated chitosan into sodium hydroxide water solution, stirring at 150rpm for 2 hr, adding dimethyl sulfoxide, stirring for 10min, and uniformly spraying onto the surface of retinervus Luffae fructus sheet with a spraying amount of 700g/m2Standing for 10 min; the mass ratio of the carboxylated-thiolated chitosan to the aqueous solution of sodium hydroxide to the dimethyl sulfoxide is 11: 30: 70;
(5) uniformly spraying silver nitrate solution on the surface of the loofah sponge sheet, wherein the spraying amount is 60 g/m2Standing for 10 min;
(6) adding 1-butyl-3-methylimidazole dihydrogen phosphate and isoprene glycol into toluene, and uniformly spraying onto the surface of retinervus Luffae fructus sheet at a concentration of 100g/m2Heating the surface of the sheet to 127 ℃ by using microwaves, stopping heating after 2 hours, repeatedly cleaning the sheet by using deionized water, and drying to obtain the antibacterial and stain-resistant chitosan/loofah sponge environment-friendly decorative sheet; 1-butyl-3-methylimidazole dihydrogen phosphate and isopreneThe mass ratio of the glycol to the toluene is 7: 4: 100, respectively;
the following steps: the mass concentration of the sodium hydroxide aqueous solution is 6 percent; the mass concentration of the ethanol solution of o-mercaptobenzoic acid is 3 percent; the mass concentration of the dimethyl sulfoxide solution of chloroacetic acid is 22 percent; the mass concentration of the silver nitrate solution is 1.5%.
Example 5
(1) Adding chitosan into sodium hydroxide aqueous solution, stirring at the rotating speed of 180rpm for 1.5h, adding dimethyl sulfoxide, stirring for 10min, adding ethanol solution of o-mercaptobenzoic acid when the temperature is raised to 60 ℃, continuously raising the temperature to 75 ℃, reacting for 4.5h, cooling, filtering, washing and drying in vacuum to obtain thiolated chitosan; the mass ratio of the chitosan to the sodium hydroxide aqueous solution to the ethanol solution of dimethyl sulfoxide to o-mercaptobenzoic acid is 12: 30: 70: 23;
(2) adding thiolated chitosan into a sodium hydroxide aqueous solution, stirring at the rotating speed of 180rpm for 1.5h, adding dimethyl sulfoxide, stirring for 10min, then adding a dimethyl sulfoxide solution of chloroacetic acid, stirring for 10min, heating to 65 ℃, reacting for 5.5h, cooling, filtering, washing, and vacuum drying to obtain carboxylated-thiolated chitosan; the mass ratio of the thiolated chitosan to the sodium hydroxide aqueous solution to the dimethyl sulfoxide solution of dimethyl sulfoxide to chloroacetic acid is 12: 30: 70: 21;
(3) cleaning retinervus Luffae fructus with deionized water, soaking in sodium hydroxide water solution for 2 hr, taking out, cleaning with deionized water, oven drying, and pressing into sheet;
(4) adding carboxylated-thiolated chitosan into sodium hydroxide water solution, stirring at 180rpm for 1.5 hr, adding dimethyl sulfoxide, stirring for 10min, and uniformly spraying onto the surface of retinervus Luffae fructus sheet with spraying amount of 650g/m2Standing for 10 min; the mass ratio of the carboxylated-thiolated chitosan to the aqueous solution of sodium hydroxide to the dimethyl sulfoxide is 11: 30: 70;
(5) uniformly spraying silver nitrate solution on the surface of the loofah sponge sheet, wherein the spraying amount is 70 g/m2Standing for 10 min;
(6) adding 1-butyl-3-methylimidazole dihydrogen phosphate and isoprene glycolAdding into toluene, and spraying onto the surface of retinervus Luffae fructus sheet at a concentration of 110g/m2Heating the surface of the sheet to 125 ℃ by adopting microwave, stopping heating after 2 hours, repeatedly cleaning the sheet by adopting deionized water, and drying to obtain the antibacterial and stain-resistant chitosan/loofah sponge environment-friendly decorative sheet; the mass ratio of 1-butyl-3-methylimidazole dihydrogen phosphate to isoprene glycol to toluene is 7: 4: 100, respectively;
the following steps: the mass concentration of the sodium hydroxide aqueous solution is 6 percent; the mass concentration of the ethanol solution of o-mercaptobenzoic acid is 3 percent; the mass concentration of the dimethyl sulfoxide solution of chloroacetic acid is 23 percent; the mass concentration of the silver nitrate solution is 1.5%.
Comparative example 1
Directly washing unmodified loofah sponge with deionized water, then soaking in sodium hydroxide aqueous solution for 2h, taking out, washing with deionized water, drying, and pressing into a sheet, namely the loofah sponge environment-friendly decorative sheet.
And (3) performance testing:
(1) antibacterial property: inoculating escherichia coli serving as a test strain on three agar culture media (respectively marked as samples 1, 2 and 3), then respectively and tightly attaching the samples 1 and 2 to the surfaces of the sheets of the example 5 and the comparative example 1, taking the sample 3 as a control, carrying out shaking culture at 35 ℃ under illumination, testing the concentration of viable bacteria (respectively marked as concentrations 1, 2 and 3) after 18h, and calculating the bacteriostasis rate; the bacteriostatic ratio of the example 5 sheet = (concentration 3-concentration 1)/concentration 3 × 100%, and the bacteriostatic ratio of the comparative example 1 sheet = (concentration 3-concentration 2)/concentration 3 × 100%, and the results are shown in table 1. It can be seen that: the bacteriostatic ability of the unmodified sheet is poor, and the bacteriostatic ability of the modified sheet is greatly improved;
(2) stain resistance: selecting an indoor open space, placing the sheets of the embodiment 5 and the comparative example 1 on the open space for fixing, randomly treading by the coming and going people for 7d, changing the positions of the sheets, randomly treading by the coming and going people for 7d, and observing the surface pollution condition of the two sheets at the moment, wherein figure 2 is a surface photo of the sheet prepared by the embodiment 5 after being treaded for 14d, and figure 3 is a surface photo of the sheet prepared by the comparative example 1 after being treaded for 14 d. It can be seen that: the surface contamination of the sheet of example 5 was insignificant, while the surface contamination of the sheet of comparative example 1 was significant, indicating that the formation of the chitosan/luffa crosslinked layer was advantageous in improving the stain resistance of the sheet.
Table 1:
Claims (8)
1. the preparation method of the bacteriostatic and stain-resistant green environment-friendly decorative sheet is characterized by comprising the following specific steps of:
(1) adding chitosan into a sodium hydroxide aqueous solution, stirring at the rotating speed of 150-200 rpm for 1-2 h, adding dimethyl sulfoxide, stirring for 10min, heating to 60 ℃, adding an ethanol solution of o-mercaptobenzoic acid, continuously heating to 70-80 ℃, reacting for 4-6 h, cooling, filtering, washing, and vacuum drying to obtain thiolated chitosan;
(2) adding thiolated chitosan into a sodium hydroxide aqueous solution, stirring at a rotating speed of 150-200 rpm for 1-2 hours, adding dimethyl sulfoxide, stirring for 10 minutes, adding a dimethyl sulfoxide solution of chloroacetic acid, stirring for 10 minutes, heating to 60-70 ℃, reacting for 5-6 hours, cooling, filtering, washing, and vacuum drying to obtain carboxylated-thiolated chitosan;
(3) cleaning retinervus Luffae fructus with deionized water, soaking in sodium hydroxide water solution for 2 hr, taking out, cleaning with deionized water, oven drying, and pressing into sheet;
(4) adding the carboxylated-sulfhydrylated chitosan into a sodium hydroxide aqueous solution, stirring at the rotating speed of 150-200 rpm for 1-2 hours, adding dimethyl sulfoxide, stirring for 10min, uniformly spraying the mixture on the surface of the loofah sponge sheet, and standing for 10 min;
(5) uniformly spraying silver nitrate solution on the surface of the loofah sponge sheet, and standing for 10 min;
(6) adding 1-butyl-3-methylimidazole dihydrogen phosphate and isoprene glycol into toluene, uniformly spraying the mixture on the surface of the loofah sponge sheet, heating the surface of the sheet to 120-130 ℃ by using microwaves, stopping heating after 2 hours, repeatedly cleaning the sheet by using deionized water, and drying to obtain the antibacterial and stain-resistant chitosan/loofah sponge green environment-friendly decorative sheet.
2. The preparation method of the bacteriostatic and stain-resistant green environmental-protection decorative sheet material as claimed in claim 1, which is characterized in that:
the mass concentration of the sodium hydroxide aqueous solution is 5-8%;
the mass concentration of the ethanol solution of o-mercaptobenzoic acid is 3%;
the mass concentration of the dimethyl sulfoxide solution of chloroacetic acid is 20-25%;
the mass concentration of the silver nitrate solution is 1.5%.
3. The preparation method of the bacteriostatic and stain-resistant green environmental-protection decorative sheet material as claimed in claim 1, which is characterized in that: in the step (1), the mass ratio of the chitosan, the sodium hydroxide aqueous solution, the dimethyl sulfoxide and the o-mercaptobenzoic acid ethanol solution is 10-12: 30: 70: 20 to 25.
4. The preparation method of the bacteriostatic and stain-resistant green environmental-protection decorative sheet material as claimed in claim 1, which is characterized in that: in the step (2), the mass ratio of the thiolated chitosan to the sodium hydroxide aqueous solution to the dimethyl sulfoxide solution of dimethyl sulfoxide and chloroacetic acid is 10-12: 30: 70: 20 to 22.
5. The preparation method of the bacteriostatic and stain-resistant green environmental-protection decorative sheet material as claimed in claim 1, which is characterized in that: in the step (4), the mass ratio of the carboxylated-thiolated chitosan to the sodium hydroxide aqueous solution to the dimethyl sulfoxide is 10-12: 30: 70; the spraying amount in the step (4) is 500-800 g/m2。
6. The preparation method of the bacteriostatic and stain-resistant green environmental-protection decorative sheet material as claimed in claim 1, which is characterized in that: the spraying amount in the step (5) is 50-100 g/m2。
7. A process according to claim 1The preparation method of the bacteriostatic and stain-resistant green environment-friendly decorative sheet is characterized by comprising the following steps of: in the step (6), the mass ratio of 1-butyl-3-methylimidazole dihydrogen phosphate to isoprene glycol to toluene is 6-8: 2-5: 100, respectively; the spraying amount in the step (6) is 100-120 g/m2。
8. A bacteriostatic and stain-resistant green environment-friendly decorative sheet prepared by the preparation method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010450841.8A CN111546458A (en) | 2020-05-25 | 2020-05-25 | Antibacterial and stain-resistant green environment-friendly decorative sheet and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010450841.8A CN111546458A (en) | 2020-05-25 | 2020-05-25 | Antibacterial and stain-resistant green environment-friendly decorative sheet and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111546458A true CN111546458A (en) | 2020-08-18 |
Family
ID=71996961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010450841.8A Withdrawn CN111546458A (en) | 2020-05-25 | 2020-05-25 | Antibacterial and stain-resistant green environment-friendly decorative sheet and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111546458A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115648376A (en) * | 2022-11-16 | 2023-01-31 | 佛山市美盈森绿谷科技有限公司 | Manufacturing method of plant fiber lampshade and plant fiber lampshade |
-
2020
- 2020-05-25 CN CN202010450841.8A patent/CN111546458A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115648376A (en) * | 2022-11-16 | 2023-01-31 | 佛山市美盈森绿谷科技有限公司 | Manufacturing method of plant fiber lampshade and plant fiber lampshade |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103233565B (en) | A kind of foaming embossment wall base cloth of bamboo charcoal nano diatom ooze and preparation technology thereof | |
| CN110747694A (en) | Preparation method of air purification type moisture-proof wallpaper | |
| CN111546458A (en) | Antibacterial and stain-resistant green environment-friendly decorative sheet and preparation method thereof | |
| CN113057178A (en) | Preparation method of chitosan Schiff base-tannic acid-copper composite antibacterial powder | |
| CN114213984B (en) | BOPP pre-coating film and production process thereof | |
| CN111560660A (en) | Method for preparing white graphene regenerated cellulose composite fiber and fiber prepared by method | |
| CN106674983A (en) | Anti-corrosive and antibacterial nano material and preparation method thereof | |
| CN113022043A (en) | Automobile ceiling material and preparation method thereof | |
| CN109486335A (en) | A kind of carbon-carbon double bond addition prepares graphene/phenylethylene ethylene/propenoic acid ester anticorrosive paint method | |
| CN113005779A (en) | In-situ nano-silver-loaded antibacterial non-woven fabric, preparation method thereof and application thereof in disposable sanitary products | |
| JP3894529B2 (en) | Dehumidifying agent, dehumidifying element and manufacturing method thereof | |
| CN115011927B (en) | Vacuum evaporation coating material and preparation method and application thereof | |
| CN110408066A (en) | Environment protection damp-proof high abrasion finishing material and its preparation method and application | |
| CN113402964A (en) | Antibacterial coating material, preparation method thereof, antibacterial coating and product | |
| CN103981727A (en) | Permeable collagen fiber/PVC composite artificial leather and production method thereof | |
| CN1757444A (en) | Method for forming coating of titanium dioxide on article surface | |
| CN113773751A (en) | Antibacterial soil-release synthetic resin and preparation method thereof | |
| CN117166292B (en) | Furniture facing paper containing polyamide resin and preparation method thereof | |
| CN109181000B (en) | Diatomite modification method, PVC (polyvinyl chloride) wire coil pad and manufacturing method | |
| CN110172862A (en) | Deacidification agent and preparation method thereof based on sodium phytate modified Nano magnesia | |
| CN205380960U (en) | Resin plate with anti -soil processing capacity | |
| CN116695428B (en) | Composite decorative fabric and production process thereof | |
| CN113119528B (en) | Waterproof straw | |
| CN107489073A (en) | A kind of environmental-protection fireproof wallpaper and preparation method thereof | |
| CN203961184U (en) | A kind of environment-friendly type wallpaper that contains bamboo-carbon fibre |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200818 |
|
| WW01 | Invention patent application withdrawn after publication |