CN110761116A - Preparation method of aromatic wallpaper - Google Patents
Preparation method of aromatic wallpaper Download PDFInfo
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- CN110761116A CN110761116A CN201910999823.2A CN201910999823A CN110761116A CN 110761116 A CN110761116 A CN 110761116A CN 201910999823 A CN201910999823 A CN 201910999823A CN 110761116 A CN110761116 A CN 110761116A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
- D21H27/20—Flexible structures being applied by the user, e.g. wallpaper
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
- D21H21/52—Additives of definite length or shape
- D21H21/54—Additives of definite length or shape being spherical, e.g. microcapsules, beads
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Abstract
The invention relates to a preparation method of aromatic wallpaper, and belongs to the technical field of wallpaper preparation. The invention uses the micro emulsion of the porous starch adsorbed essence as the core material, uses gelatin and Arabic gum as the wall material to prepare the microcapsule essence, and coats the microcapsule essence on the surface of the wallpaper to prepare the fragrant wallpaper capable of keeping fragrance for a long time; porous starch has many advantages as an adsorbent, such as good adsorption capacity; the powder has certain mechanical strength; significant structural integrity can be maintained when dispersed in water and other solvents; most importantly, no toxic reagent is used in the production process, and the method is safe and pollution-free; when the porous starch is used as a microcapsule core material, the porous starch is used for adsorbing a target substance, then the porous starch adsorbing the target substance is embedded by various wall materials, the core material is released under specific conditions and specific occasions, and the essence is micro-emulsified to form nano particles by the porous starch to enter pores of the porous substance through adsorption so as to achieve long-acting slow release effect.
Description
Technical Field
The invention relates to a preparation method of aromatic wallpaper, and belongs to the technical field of wallpaper preparation.
Background
With the improvement of living standard of people, the olfactory era has been in a silent state. From food beverages to daily chemicals, perfumed products are widely and enthusiastically interesting and appreciated. The essence plays an immeasurable role in the countryside as a fragrance source of the perfumed product. However, the characteristics of volatile, easy oxidation and poor thermal stability of the essence bring certain difficulty to the application of the essence. How to prolong the aroma-leaving time of the essence and ensure the stability of the quality of the essence is an important problem related to the development of the light chemical engineering, and the development of the microcapsule technology provides a good idea for solving the problem. To date, a variety of microencapsulated fragrances have been successfully prepared and applied in real life.
The aromatic wallpaper is functional indoor wall surface decorative paper, can slowly release aroma, thereby improving the air quality of a room, and has higher product added value and market competitiveness compared with the traditional wallpaper.
Paper products with various types and purposes exist in the paper making industry, and the combination of the microcapsule technology and the paper products derives a plurality of paper products which have excellent performance, are convenient for human life and bring different prior use experiences to consumers, such as carbonless copy paper, descaling paper, scented paper, electronic paper, anti-counterfeiting paper, temperature indicating labels, photosensitive, thermosensitive or magnetic recording paper and the like.
Wallpaper is commonly called wallpaper and is an interior decoration material pasted on a wall. Compared with other interior decoration materials (such as wall paint, coating and the like), the decorative paint has the advantages of rich colors, various patterns, nobility, elegance, environmental protection, low price and the like. The development of wallpaper has originated abroad, and the use of wallpaper in many developed countries, such as the united kingdom, the united states, italy, japan, etc., is very high. With the increasing living standard of people, more and more Chinese people begin to pay attention to the indoor living environment. The wallpaper as an interior decoration material has the advantages of rich colors, various patterns, proper price, dirt resistance, scrubbing resistance and the like compared with common interior wall building materials and wall paint; some wallpaper also has the effects of fire prevention, mildew prevention, bacteria resistance and the like; in addition, the time required for decorating the room by adopting the wallpaper is short, and the new high-standard requirements of people on the aspects of safety, comfort, warmness and the like of the indoor environment can be met.
With the improvement of living standard, the abundance of material resources, the enhancement of environmental awareness and the improvement of aesthetic interest of people, wallpaper is more and more appeared in the public visual field. The wall surfaces of a plurality of private or public places such as house residences, hotel clubs, market theaters and the like are decorated newly by various wallpaper. The wallpaper market is increasingly competitive with it. In order to meet the requirements of consumers in different places, different aesthetics, different textures, different interests and hobbies and different grades on wallpaper, wallpaper manufacturers have developed brains to appeal consumers from the aspects of product color, patterns, materials and the like. However, most of the research directions focus on winning the consumer's visual and tactile appeal through wallpaper, and the consumer's wallpaper research is relatively blank in terms of olfaction.
With the progress of science and technology, people have been flooded with more and more perfumed products in life. The body shadow of the aroma can be found from food and beverage, washing and protecting articles and air environment improvement, the market of the aroma-added product is shown, and the high liking and the acceptance of the aroma-added product by people are also shown. Therefore, in order to grasp market opportunity, meet the development trend of times and meet the pursuit of consumers for fragrance, the aromatic wallpaper capable of releasing fragrance and improving room odor is a broad market attacked by the perfume and essence industry and is also a large industry leak to be urgently developed in the paper making industry.
Compared with the traditional paper products, the aromatic wallpaper has higher added value of products, stronger market competitiveness and wider market space. At present, many public places such as high-grade entertainment places, hotels, conference halls, cinemas, markets and the like try to use aromatic wallpaper to decorate house spaces, and try to serve as a new marketing mode, namely olfactory marketing, to solicit customers, increase self competitiveness, improve brand images and drive the increase of profits. Therefore, the research of the fragrant wallpaper is a promising direction for the wallpaper market to seek greater breakthroughs.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the problem that the wallpaper in the prior art cannot keep fragrance for a long time, a preparation method of fragrant wallpaper is provided.
In order to solve the technical problems, the invention adopts the technical scheme that:
(1) mixing porous starch, gelatin, arabic gum, essence emulsion and deionized water, stirring, and grinding to obtain precursor powder;
(2) and adding the precursor powder into the mixed solution to obtain a reaction solution, dispersing and homogenizing the reaction solution to obtain the microcapsule essence, uniformly coating the microcapsule essence on the surface of the wallpaper, and naturally airing at room temperature to obtain the aromatic wallpaper.
The preparation method of the porous starch in the step (1) comprises the following steps:
(1) uniformly mixing starch and 80% ethanol solution in a mass ratio of 1: 10 to obtain starch slurry, adding 2% hydrochloric acid in the mass ratio to obtain base fluid, and carrying out heat preservation and stirring treatment on the base fluid to obtain mixed slurry;
(2) and carrying out centrifugal separation on the mixed slurry, collecting bottom sediment to obtain sediment A, washing the sediment A3-5 times with deionized water, adjusting the pH value to be neutral by using a sodium hydroxide solution with the mass fraction of 10%, carrying out centrifugal separation, collecting the bottom sediment to obtain sediment B, drying the sediment B in an oven at the temperature of 40-50 ℃ to constant weight, and grinding to obtain the porous starch.
The preparation method of the essence emulsion in the step (1) comprises the following steps: mixing OP-10, absolute ethyl alcohol, essence and deionized water according to the mass ratio of 2: 1: 5: 10, and stirring at a high speed of 800-900 r/min for 1-2 h to obtain the essence emulsion.
The proportion of the porous starch, the gelatin, the Arabic gum, the essence emulsion and the deionized water in the step (1) is as follows: respectively weighing 10-20 parts of porous starch, 15-25 parts of gelatin, 10-20 parts of Arabic gum, 1-10 parts of essence emulsion and 5-15 parts of deionized water according to parts by weight.
The step (1) of respectively mixing and stirring porous starch, gelatin, Arabic gum, essence emulsion and deionized water comprises the following steps:
(1) mixing gelatin, Arabic gum and deionized water, and stirring at 50-60 ℃ for 1-2 hours to obtain a mixed solution;
(2) mixing and stirring the porous starch and the essence emulsion for 1-2 hours, carrying out suction filtration to obtain filter residues, and placing the filter residues in an oven with the temperature of 40 ℃ for vacuum drying for 6-8 hours.
The mass ratio of the precursor powder to the mixed solution in the step (2) is 1: 5.
The step (2) of dispersing and homogenizing the reaction solution comprises the following steps: dispersing at a high speed of 2000-3000 r/min for 5-10 min, and homogenizing under 20-30 MPa for 2-3 times.
The mass fraction of the hydrochloric acid and the starch slurry in the step (1) is 2 percent, and the mass ratio of the hydrochloric acid to the starch slurry is 1: 15.
The step (1) of carrying out heat preservation and stirring treatment on the matrix liquid comprises the following steps: and (3) keeping the temperature of the water bath at 80-85 ℃ and stirring at the speed of 500-600 r/min for stirring for 2-3 h.
The centrifugal separation treatment step in the step (2) is as follows: centrifuging for 10-15 min at the centrifugal rotating speed of 4000-5000 r/min.
Compared with other methods, the method has the beneficial technical effects that:
(1) the invention uses the micro emulsion of the porous starch adsorbed essence as the core material, uses gelatin and Arabic gum as the wall material to prepare the microcapsule essence, and coats the microcapsule essence on the surface of the wallpaper to prepare the fragrant wallpaper capable of keeping fragrance for a long time; porous starch has many advantages as an adsorbent, such as a large specific pore volume; good adsorption capacity; the powder has certain mechanical strength; significant structural integrity can be maintained when dispersed in water and other solvents; most importantly, no toxic reagent is used in the production process, and the method is safe and pollution-free; when the porous starch is used as a microcapsule core material, the porous starch is firstly used for adsorbing a target substance, then the porous starch adsorbing the target substance is embedded by various wall materials, the core material is released under specific conditions and specific occasions, the essence is micro-emulsified to form nano particles by the porous starch adsorbing the essence micro emulsion, and the nano particles enter pores of the porous substance through the adsorption effect, so that the long-acting slow release effect is achieved, and the volatilization of essence molecules, the loss and the chemical degradation in the storage process can be prevented;
(2) the invention adopts a phase separation method, an outer membrane material gelatin and Arabic gum are encapsulated with an inner core material-essence emulsion, the gelatin and the Arabic gum are synthetic high molecular materials containing hydrophilic groups, due to hydration, a colloid can be formed in water, the hydrophilicity of porous starch is greater than that of the gelatin and the Arabic gum, due to the strong hydration of the porous starch, water molecules in an original colloid gradually move to the porous starch, the hydration membranes of the gelatin molecules and the Arabic gum molecules are damaged, the colloid is disintegrated, and the gelatin molecules and the Arabic gum molecules are separated out from a liquid phase and changed into a solid phase, and are condensed to form a film on the surface of inner core material particles to obtain microcapsules;
(3) the emulsifier is added to disperse and emulsify the essence into tiny particles, and the prepared capsule is tiny and can conveniently penetrate into the fabric to be adhered to the surface of the fiber, so that a lasting fragrance-retaining finishing effect is obtained; the addition of the emulsifier enables the mixed membrane to have stronger affinity with the water phase and the oil phase, so that the essence emulsion has better stability;
(4) according to the method, the acid method alcohol medium is used for preparing the porous starch, and the ethanol mediums with different concentrations can influence the mode and the speed of reaction between water molecules entering the starch granules and glycosidic bonds in the starch, so that the basic structure of the starch granules can be maintained while hydrolysis is carried out under the condition that the starch gelatinization temperature in the water medium is higher than the starch gelatinization temperature by controlling a certain ethanol concentration, the starch hydrolysis rate is greatly increased, the production period is shortened, and the production cost is reduced; the porous starch is also called microporous starch, which is starch processed by a manual method to make particles porous, is novel modified starch, has larger specific pore volume and specific surface area, thereby having good adsorption performance and being used as an adsorption carrier and an embedding agent of functional substances.
Detailed Description
Uniformly mixing starch and 80% ethanol solution in a mass ratio of 1: 10 to obtain starch slurry, adding 2% hydrochloric acid in a mass ratio of 1: 15, carrying out heat preservation stirring at a water bath temperature of 80-85 ℃ and a stirring speed of 500-600 r/min for 2-3 h to obtain mixed slurry, carrying out centrifugal separation on the mixed slurry for 10-15 min at a centrifugal rotation speed of 4000-5000 r/min, collecting bottom sediment to obtain sediment A, washing the sediment A3-5 times with deionized water, regulating the pH value to be neutral with 10% sodium hydroxide solution in a mass ratio, carrying out centrifugal separation treatment, collecting bottom sediment to obtain sediment B, placing the sediment B in an oven at 40-50 ℃ for drying to constant weight, and grinding to obtain porous starch; mixing OP-10, absolute ethyl alcohol, essence and deionized water according to the mass ratio of 2: 1: 5: 10, and stirring at a high speed of 800-900 r/min for 1-2 h to obtain essence emulsion; respectively weighing 10-20 parts of porous starch, 15-25 parts of gelatin, 10-20 parts of Arabic gum, 1-10 parts of essence emulsion and 5-15 parts of deionized water according to parts by weight, mixing the gelatin, the Arabic gum and the deionized water, stirring for 1-2 hours at the temperature of 50-60 ℃ to obtain a mixed solution, mixing and stirring the porous starch and the essence emulsion for 1-2 hours, carrying out suction filtration to obtain filter residues, placing the filter residues in an oven at the temperature of 40 ℃ for vacuum drying for 6-8 hours, and grinding to obtain precursor powder; adding the precursor powder into the mixed solution according to the mass ratio of 1: 5 to obtain a reaction solution, dispersing the reaction solution at a high speed of 2000-3000 r/min for 5-10 min, homogenizing for 2-3 times under the pressure of 20-30 MPa to obtain the microcapsule essence, uniformly coating the microcapsule essence on the surface of the wallpaper, and naturally drying at room temperature to obtain the fragrant wallpaper.
Example 1
Mixing porous starch, gelatin, arabic gum, essence emulsion and deionized water, stirring, and grinding to obtain precursor powder; and adding the precursor powder into the mixed solution to obtain a reaction solution, dispersing and homogenizing the reaction solution to obtain the microcapsule essence, uniformly coating the microcapsule essence on the surface of the wallpaper, and naturally airing at room temperature to obtain the aromatic wallpaper. The preparation method of the porous starch comprises the following steps: uniformly mixing starch and 80% ethanol solution in a mass ratio of 1: 10 to obtain starch slurry, adding 2% hydrochloric acid in the mass ratio to obtain base fluid, and carrying out heat preservation and stirring treatment on the base fluid to obtain mixed slurry; and carrying out centrifugal separation on the mixed slurry, collecting bottom sediment to obtain sediment A, washing the sediment A3 times with deionized water, adjusting the pH value to be neutral by using a sodium hydroxide solution with the mass fraction of 10%, carrying out centrifugal separation, collecting the bottom sediment to obtain sediment B, drying the sediment B in an oven at 40 ℃ to constant weight, and grinding the sediment B to obtain the porous starch. The preparation steps of the essence emulsion are as follows: mixing OP-10, absolute ethyl alcohol, essence and deionized water according to the mass ratio of 2: 1: 5: 10, and stirring at a high speed of 800r/min for 1h to obtain the essence emulsion. The proportion of the porous starch, the gelatin, the Arabic gum, the essence emulsion and the deionized water is as follows: respectively weighing 10 parts of porous starch, 15 parts of gelatin, 10 parts of Arabic gum, 1 part of essence emulsion and 5 parts of deionized water according to parts by weight. Respectively mixing and stirring porous starch, gelatin, Arabic gum, essence emulsion and deionized water, and comprises the following steps: mixing gelatin, Arabic gum and deionized water, and stirring at 50 deg.C for 1h to obtain a mixed solution; mixing porous starch and essence emulsion, stirring for 1h, vacuum filtering to obtain filter residue, and vacuum drying the filter residue in oven at 40 deg.C for 6 h. The mass ratio of the precursor powder to the mixed liquid is 1: 5. The step of dispersing and homogenizing the reaction solution comprises the following steps: dispersing at high speed for 5min at 2000r/min, and homogenizing for 2 times at 20 MPa. The mass ratio of the hydrochloric acid with the mass fraction of 2 percent to the starch slurry is 1: 15. The method for preserving the temperature and stirring the matrix liquid comprises the following steps: stirring for 2h under the conditions that the water bath temperature is 80 ℃ and the stirring speed is 500 r/min. The centrifugal separation treatment steps are as follows: centrifuging for 10min at the centrifugal speed of 4000 r/min.
Example 2
Mixing porous starch, gelatin, arabic gum, essence emulsion and deionized water, stirring, and grinding to obtain precursor powder; and adding the precursor powder into the mixed solution to obtain a reaction solution, dispersing and homogenizing the reaction solution to obtain the microcapsule essence, uniformly coating the microcapsule essence on the surface of the wallpaper, and naturally airing at room temperature to obtain the aromatic wallpaper. The preparation method of the porous starch comprises the following steps: uniformly mixing starch and 80% ethanol solution in a mass ratio of 1: 10 to obtain starch slurry, adding 2% hydrochloric acid in the mass ratio to obtain base fluid, and carrying out heat preservation and stirring treatment on the base fluid to obtain mixed slurry; and carrying out centrifugal separation on the mixed slurry, collecting bottom sediment to obtain sediment A, washing the sediment A4 times with deionized water, adjusting the pH value to be neutral by using a sodium hydroxide solution with the mass fraction of 10%, carrying out centrifugal separation, collecting the bottom sediment to obtain sediment B, drying the sediment B in an oven at the temperature of 45 ℃ to constant weight, and grinding the sediment B to obtain the porous starch. The preparation steps of the essence emulsion are as follows: OP-10, absolute ethyl alcohol, essence and deionized water are mixed according to the mass ratio of 2: 1: 5: 10, and the mixture is stirred at a high speed of 850r/min for 1h to obtain the essence emulsion. The proportion of the porous starch, the gelatin, the Arabic gum, the essence emulsion and the deionized water is as follows: respectively weighing 15 parts of porous starch, 20 parts of gelatin, 15 parts of Arabic gum, 5 parts of essence emulsion and 10 parts of deionized water according to parts by weight. Respectively mixing and stirring porous starch, gelatin, Arabic gum, essence emulsion and deionized water, and comprises the following steps: mixing gelatin, Arabic gum and deionized water, and stirring at 55 deg.C for 1h to obtain a mixed solution; mixing porous starch and essence emulsion, stirring for 1h, vacuum filtering to obtain filter residue, and vacuum drying the filter residue in oven at 40 deg.C for 7 h. The mass ratio of the precursor powder to the mixed liquid is 1: 5. The step of dispersing and homogenizing the reaction solution comprises the following steps: dispersing at high speed for 8min at 2500r/min, and homogenizing under 25MPa for 2 times. The mass ratio of the hydrochloric acid with the mass fraction of 2 percent to the starch slurry is 1: 15. The method for preserving the temperature and stirring the matrix liquid comprises the following steps: stirring for 2h under the conditions that the water bath temperature is 82 ℃ and the stirring speed is 550 r/min. The centrifugal separation treatment steps are as follows: centrifuging at 4500r/min for 12 min.
Example 3
Mixing porous starch, gelatin, arabic gum, essence emulsion and deionized water, stirring, and grinding to obtain precursor powder; and adding the precursor powder into the mixed solution to obtain a reaction solution, dispersing and homogenizing the reaction solution to obtain the microcapsule essence, uniformly coating the microcapsule essence on the surface of the wallpaper, and naturally airing at room temperature to obtain the aromatic wallpaper. The preparation method of the porous starch comprises the following steps: uniformly mixing starch and 80% ethanol solution in a mass ratio of 1: 10 to obtain starch slurry, adding 2% hydrochloric acid in the mass ratio to obtain base fluid, and carrying out heat preservation and stirring treatment on the base fluid to obtain mixed slurry; and carrying out centrifugal separation on the mixed slurry, collecting bottom sediment to obtain sediment A, washing the sediment A5 times with deionized water, adjusting the pH value to be neutral by using a sodium hydroxide solution with the mass fraction of 10%, carrying out centrifugal separation, collecting the bottom sediment to obtain sediment B, drying the sediment B in an oven at 50 ℃ to constant weight, and grinding to obtain the porous starch. The preparation steps of the essence emulsion are as follows: mixing OP-10, absolute ethyl alcohol, essence and deionized water according to the mass ratio of 2: 1: 5: 10, and stirring at a high speed of 900r/min for 2h to obtain the essence emulsion. The proportion of the porous starch, the gelatin, the Arabic gum, the essence emulsion and the deionized water is as follows: respectively weighing 20 parts of porous starch, 25 parts of gelatin, 20 parts of Arabic gum, 10 parts of essence emulsion and 15 parts of deionized water according to parts by weight. Respectively mixing and stirring porous starch, gelatin, Arabic gum, essence emulsion and deionized water, and comprises the following steps: mixing gelatin, Arabic gum and deionized water, and stirring at 60 deg.C for 2 hr to obtain a mixed solution; mixing porous starch and essence emulsion, stirring for 2 hr, vacuum filtering to obtain filter residue, and vacuum drying the filter residue in oven at 40 deg.C for 8 hr. The mass ratio of the precursor powder to the mixed liquid is 1: 5. The step of dispersing and homogenizing the reaction solution comprises the following steps: dispersing at high speed at 3000r/min for 10min, and homogenizing under 30MPa for 3 times. The mass ratio of the hydrochloric acid with the mass fraction of 2 percent to the starch slurry is 1: 15. The method for preserving the temperature and stirring the matrix liquid comprises the following steps: stirring for 3h under the conditions that the water bath temperature is 85 ℃ and the stirring speed is 600 r/min. The centrifugal separation treatment steps are as follows: centrifuging for 15min at the centrifugal speed of 5000 r/min.
Comparative example: aromatic wallpaper from Dongguan company.
The aromatic wallpaper prepared in the examples and the comparative examples is tested, and the specific test is as follows:
the electronic nose analysis method comprises the following steps: 1.00g (to the nearest 0.01) of sample paper was accurately weighed, cut into pieces, placed in a 10mL headspace bottle, capped and sealed for detection.
In the experiment, a Marvens Zetasizer2000 dynamic laser particle size instrument is adopted to test the particle size and the particle size distribution of the microcapsule essence obtained in the experiment. The test sample was loaded into the sample cell equipped with the instrument, the measurement temperature was 25 ℃, and the measurement was repeated three times.
The experimental results show that: the electronic nose is adopted to regularly compare and analyze the electronic nose radar chart obtained after the aromatic wallpaper respectively finished by the common essence and the embedded essence is placed under the ventilation and room temperature condition for 0 day, 3 days, 15 days, 30 days and 60 days and the aroma profile and the aroma intensity obtained by the analysis result of the electronic nose sensor. The result shows that the fragrance intensity of the aromatic wallpaper finished by the common essence is continuously reduced along with the change of time, and the aromatic wallpaper basically has no great difference with the blank wallpaper after being placed for two months; the microcapsule fragrant wallpaper shows the trend that the fragrance intensity becomes smaller along with the time extension only in the first 15 days, and shows more stable after that, thereby playing the effect of microcapsule slow release.
The particle size distribution of the microcapsule essence shows a normal distribution trend, and the peak shape of the microcapsule essence shows a narrow single peak shape, which shows that the particle size distribution of the microcapsule essence is narrow and the particle size is uniform. The average particle size of the microcapsule essence is 2 microns, the particle size distribution range is l-3 microns, and the particle size distribution coefficient is 0.216, which shows that the microcapsule essence obtained by experiments is relatively stable in system and good in particle regularity.
Claims (10)
1. The preparation method of the aromatic wallpaper is characterized by comprising the following specific preparation steps:
(1) mixing porous starch, gelatin, arabic gum, essence emulsion and deionized water, stirring, and grinding to obtain precursor powder;
(2) and adding the precursor powder into the mixed solution to obtain a reaction solution, dispersing and homogenizing the reaction solution to obtain the microcapsule essence, uniformly coating the microcapsule essence on the surface of the wallpaper, and naturally airing at room temperature to obtain the aromatic wallpaper.
2. The method for preparing fragrant wallpaper according to claim 1, wherein the method comprises the following steps: the preparation method of the porous starch in the step (1) comprises the following steps:
(1) uniformly mixing starch and 80% ethanol solution in a mass ratio of 1: 10 to obtain starch slurry, adding 2% hydrochloric acid in the mass ratio to obtain base fluid, and carrying out heat preservation and stirring treatment on the base fluid to obtain mixed slurry;
(2) and carrying out centrifugal separation on the mixed slurry, collecting bottom sediment to obtain sediment A, washing the sediment A3-5 times with deionized water, adjusting the pH value to be neutral by using a sodium hydroxide solution with the mass fraction of 10%, carrying out centrifugal separation, collecting the bottom sediment to obtain sediment B, drying the sediment B in an oven at the temperature of 40-50 ℃ to constant weight, and grinding to obtain the porous starch.
3. The method for preparing fragrant wallpaper according to claim 1, wherein the method comprises the following steps: the preparation method of the essence emulsion in the step (1) comprises the following steps: mixing OP-10, absolute ethyl alcohol, essence and deionized water according to the mass ratio of 2: 1: 5: 10, and stirring at a high speed of 800-900 r/min for 1-2 h to obtain the essence emulsion.
4. The method for preparing fragrant wallpaper according to claim 1, wherein the method comprises the following steps: the proportion of the porous starch, the gelatin, the Arabic gum, the essence emulsion and the deionized water in the step (1) is as follows: respectively weighing 10-20 parts of porous starch, 15-25 parts of gelatin, 10-20 parts of Arabic gum, 1-10 parts of essence emulsion and 5-15 parts of deionized water according to parts by weight.
5. The method for preparing fragrant wallpaper according to claim 1, wherein the method comprises the following steps: the step (1) of respectively mixing and stirring porous starch, gelatin, Arabic gum, essence emulsion and deionized water comprises the following steps:
(1) mixing gelatin, Arabic gum and deionized water, and stirring at 50-60 ℃ for 1-2 hours to obtain a mixed solution;
(2) mixing and stirring the porous starch and the essence emulsion for 1-2 hours, carrying out suction filtration to obtain filter residues, and placing the filter residues in an oven with the temperature of 40 ℃ for vacuum drying for 6-8 hours.
6. The method for preparing fragrant wallpaper according to claim 1, wherein the method comprises the following steps: the mass ratio of the precursor powder to the mixed solution in the step (2) is 1: 5.
7. The method for preparing fragrant wallpaper according to claim 1, wherein the method comprises the following steps: the step (2) of dispersing and homogenizing the reaction solution comprises the following steps: dispersing at a high speed of 2000-3000 r/min for 5-10 min, and homogenizing under 20-30 MPa for 2-3 times.
8. The method for preparing fragrant wallpaper according to claim 2, wherein the method comprises the following steps: the mass fraction of the hydrochloric acid and the starch slurry in the step (1) is 2 percent, and the mass ratio of the hydrochloric acid to the starch slurry is 1: 15.
9. The method for preparing fragrant wallpaper according to claim 2, wherein the method comprises the following steps: the step (1) of carrying out heat preservation and stirring treatment on the matrix liquid comprises the following steps: and (3) keeping the temperature of the water bath at 80-85 ℃ and stirring at the speed of 500-600 r/min for stirring for 2-3 h.
10. The method for preparing fragrant wallpaper according to claim 2, wherein the method comprises the following steps: the centrifugal separation treatment step in the step (2) is as follows: centrifuging for 10-15 min at the centrifugal rotating speed of 4000-5000 r/min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111549576A (en) * | 2020-03-26 | 2020-08-18 | 安徽紫荆花壁纸股份有限公司 | Method for manufacturing composite film aromatic wallpaper |
| CN115284693A (en) * | 2022-07-07 | 2022-11-04 | 浙江升华云峰新材股份有限公司 | Fragrance-releasing antibacterial antiviral ecological plate and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111549576A (en) * | 2020-03-26 | 2020-08-18 | 安徽紫荆花壁纸股份有限公司 | Method for manufacturing composite film aromatic wallpaper |
| CN115284693A (en) * | 2022-07-07 | 2022-11-04 | 浙江升华云峰新材股份有限公司 | Fragrance-releasing antibacterial antiviral ecological plate and preparation method thereof |
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