CN111588116A - Fragrance sustained-release microcapsule mask and preparation method thereof - Google Patents
Fragrance sustained-release microcapsule mask and preparation method thereof Download PDFInfo
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- CN111588116A CN111588116A CN202010407419.4A CN202010407419A CN111588116A CN 111588116 A CN111588116 A CN 111588116A CN 202010407419 A CN202010407419 A CN 202010407419A CN 111588116 A CN111588116 A CN 111588116A
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1192—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with antimicrobial agent
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2400/00—Functions or special features of garments
- A41D2400/36—Deoderising or perfuming
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Abstract
The invention relates to a fragrance sustained-release microcapsule mask and a preparation method thereof, and the fragrance sustained-release microcapsule mask comprises a mask body and a lace; the cover body comprises a fragrance sustained-release microcapsule layer, and the fragrance sustained-release microcapsule layer is prepared by melt-blown fabric loaded by fragrance sustained-release microcapsules; the core material of the fragrance sustained-release microcapsule comprises: at least one of lignum Aquilariae Resinatum extract, lignum Santali albi essential oil, oleum Menthae Dementholatum, thyme essential oil, lemon essential oil, Benzonum essential oil, cortex Cinnamomi essential oil, tea tree essential oil and lavender essential oil; the wall material of the fragrance sustained-release microcapsule is chitosan and polypropylene glycol; the mass ratio of the core material to the wall material is 1: 0.5 to 1.5. The fragrance sustained-release microcapsule mask can persistently and slowly release fragrance substances, and the comfort level of wearing the mask is improved.
Description
Technical Field
The invention relates to the field of masks, in particular to a fragrance slow-release micro-capsule mask and a preparation method thereof.
Background
In recent years, along with deterioration of the environment and improvement of living standard, people pay more and more attention to health, more and more people choose to wear the mask for going out, and wearing the mask becomes a habit when people go out, and more people can choose to wear the mask for a long time. Under the condition of abundant resources, people begin to pay attention to the comfort and the sense organ pleasure of the mask.
Disposable gauze mask is relative other functional gauze masks, and its low price is convenient to wear, and the material is soft, wears for a long time and can not form in facial formation and reine the trace, can satisfy most crowd's demand. The disposable mask can prevent dust in the air from being sucked into the lung, can filter particles in the air and various microorganisms, and can prevent cross infection among people.
The disposable mask is sterilized by ethylene oxide in the production process, and the product still has partial residues after leaving the factory, so that the disposable mask cannot hurt the human body, but when the disposable mask is worn, the mask has peculiar smell, part of people can have dizziness, nausea and vomiting, even have trouble, the life quality and the working quality are seriously influenced, and the disposable mask can cause discomfort or even suffer from diseases in the environment for a long time. The fresh and elegant smell can make people happy and spirited, and simultaneously can improve the sleep quality, thereby improving the quality of life and work. At present, there are fragrance-containing masks on the market for solving the discomfort when wearing the masks. Most of mask containing fragrance is added with fragrance such as essential oil and aromatic, the fragrance is strong in a short time when the mask is worn, the fragrance is completely volatilized later, the effect of lasting and mild odor removal cannot be exerted, and even some people can aggravate discomfort such as nausea and dizziness due to the strong fragrance. Fragrances are highly harmful to the skin, lungs and brain and are not suitable for long-term use at high concentrations.
Disclosure of Invention
Based on the above, one of the purposes of the present invention is to provide a fragrance sustained-release microcapsule mask, wherein the fragrance sustained-release microcapsules loaded on the mask have high stability and good sustained-release performance, and can release fragrance substances persistently and slowly, thereby greatly improving the comfort level when wearing the mask.
The specific technical scheme is as follows:
a fragrance sustained-release microcapsule mask comprises a mask body and a lace; the cover body comprises a fragrance sustained-release microcapsule layer, and the fragrance sustained-release microcapsule layer is prepared by melt-blown fabric loaded by fragrance sustained-release microcapsules;
the core material of the fragrance sustained-release microcapsule comprises: at least one of agilawood extract, peppermint oil, lemon essential oil, sandalwood essential oil, thyme essential oil, benzoin essential oil, cinnamon essential oil, tea tree essential oil, and lavender essential oil;
the wall material of the fragrance sustained-release microcapsule is chitosan and polypropylene glycol;
the mass ratio of the core material to the wall material is 1: 0.5 to 1.5.
In some of these embodiments, the chitosan has a molecular weight of 15 to 30 ten thousand; preferably, the chitosan has a molecular weight of 18 to 22 ten thousand;
in some of these embodiments, the polyallyl alcohol has a molecular weight of 200 to 4000; preferably, the molecular weight of the polypropylene glycol is 200-600.
In some embodiments, the mass ratio of chitosan to polyallyl alcohol is 1: 0.8-1.2, and further, the mass ratio of the chitosan to the polypropylene glycol is 1: 0.9 to 1.1.
In some embodiments, the mass ratio of the core material to the wall material is 1: 0.8 to 1.2.
In some of these embodiments, the core material is agilawood extract, peppermint oil, and lemon essential oil.
In some embodiments, the mass ratio of the agilawood extract to the peppermint oil to the lemon essential oil is 2: 0.4-0.9: 0.4 to 0.9.
The invention also aims to provide a preparation method of the fragrance sustained-release micro-capsule mask, which comprises the following steps:
(1) preparing a flavor slow-release microcapsule liquid: dissolving the wall material with water, adding the core material into the obtained wall material aqueous solution, adjusting the pH value to acidity, and mixing; then adding a cross-linking agent into the obtained mixed solution, and adjusting the pH value to be neutral after the cross-linking reaction is finished to obtain a flavor slow-release microcapsule liquid;
(2) preparing a fragrance sustained-release microcapsule layer: soaking the melt-blown cloth in the flavor slow-release micro-capsule liquid obtained in the step (1), and drying;
(3) and (3) preparing the fragrance sustained-release microcapsule mask by using the fragrance sustained-release microcapsule layer obtained in the step (2).
In some embodiments, in step (1), the concentration of the wall material in the aqueous solution of wall material is 0.02-0.04 g/ml.
In some of the embodiments, in the step (1), the cross-linking agent is pentanediol, and the cross-linking agent is added to the mixed solution in the form of an aqueous cross-linking agent solution.
In some embodiments, the concentration of the cross-linking agent in the cross-linking agent aqueous solution is 0.2-0.3 g/100ml, preferably 0.23-0.28 g/100 ml.
In some embodiments, the mass ratio of the cross-linking agent to the wall material is 1: 15-25, preferably 1: 18 to 22.
In some embodiments, in step (1), the reaction time of the crosslinking reaction is 1.5 to 2.5 hours, and further 1.8 to 2.2 hours.
In some of the embodiments, in the step (1), the acidity is pH 3-4.
In some of the embodiments, the mixing time in step (1) is 50 to 70min, and further 55 to 65 min.
In some embodiments, the soaking time in step (2) is 8-12 min, and further 9-11 min.
Compared with the prior art, the invention has the following beneficial effects:
according to the fragrance sustained-release microcapsule mask, chitosan and polypropylene glycol are selected to be compounded as the wall material of the fragrance sustained-release microcapsules, the surface property and the film forming property of the wall material composition are good, the prepared fragrance sustained-release capsules are high in stability, the release of fragrance substances can be effectively delayed and controlled, the fragrance substances are released durably and stably, the adverse reactions of dizziness, asthma and the like caused by high-concentration volatile oil generated by opening bags, sudden release, too fast release and the like of fragrance odor or the effect of the fragrance substances is difficult to be exerted due to too low fragrance value caused by too slow release can be prevented, and even if the mask is tried to be carried with the mask, the mask still has light fragrance.
According to the invention, the agilawood extract, the mint oil and the lemon essential oil are selected as core materials of the fragrance sustained-release microcapsules, and the lemon essential oil has fresh fragrance, has the functions of improving the function of a circulatory system, enhancing the immune system and the like, and has the effect of relieving headache. The peppermint oil has pharmacological actions in various aspects such as phlegm elimination, cholagogue, spasmolysis, anti-inflammation, analgesia, antibiosis and antivirus, and the like, and the three components are compounded to promote spirit and eliminate fatigue feeling, so that the fragrance molecules are inhaled to make people happy, relieve the pressure in life and work and have good sleep condition.
Drawings
Fig. 1 is a schematic view of the mask structure of example 1.
Detailed Description
Experimental procedures according to the invention, in which no particular conditions are specified in the following examples, are generally carried out under conventional conditions, or under conditions recommended by the manufacturer. The various chemicals used in the examples are commercially available.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, article, or device that comprises a list of steps is not limited to only those steps or modules listed, but may alternatively include other steps not listed or inherent to such process, method, article, or device.
The "plurality" referred to in the present invention means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The embodiment provides a fragrance sustained-release micro-capsule mask, which comprises a mask body and a lace; the cover body comprises a fragrance sustained-release microcapsule layer, and the fragrance sustained-release microcapsule layer is prepared by melt-blown fabric loaded by fragrance sustained-release microcapsules;
the core material of the fragrance sustained-release microcapsule comprises: at least one of agilawood extract, peppermint oil, lemon essential oil, sandalwood essential oil, thyme essential oil, benzoin essential oil, cinnamon essential oil, tea tree essential oil, and lavender essential oil;
the wall material of the fragrance sustained-release microcapsule is chitosan and polypropylene glycol;
the mass ratio of the core material to the wall material is 1: 0.5 to 1.5.
In the wall material of the fragrance sustained-release microcapsule, the mass ratio of chitosan to polypropylene glycol is preferably 1: 0.8 to 1.2. The quality ratio is controlled within the range, so that the barrier effect of the microcapsule on the fragrance emission can be obviously improved, and the slow release time of the fragrance is prolonged. When the proportion of the polypropylene alcohol is further increased, the slow release performance is reduced.
In addition, in the wall material of the fragrance sustained-release microcapsule, the molecular weight of chitosan is controlled to be 18-22 ten thousand, the molecular weight of polypropylene glycol is controlled to be 200-600, the two wall materials can be dissolved in hot water, no toxic or side effect exists, the wall material composition has better surface characteristics and film forming property, better synergistic effect can be exerted, the mechanical strength of the prepared microcapsule is better, and the sustained-release performance of the microcapsule is further improved.
In addition, the invention can also effectively protect the active substance from being oxidized.
The present invention will be described in further detail with reference to specific examples.
The following examples refer to some of the raw material sources as follows:
polypropylene glycol: molecular weight: 360-440, purchased from Nantong Jinlai chemical Co., Ltd;
and (3) chitosan: molecular weight: 20 million from Shanghai ai research Biotech, Inc.
Example 1
This example provides a fragrance slowly-releasing microcapsule gauze mask
The main raw materials are proportioned as follows: 15g of chitosan (molecular weight: 20 ten thousand), 15g of polypropylene glycol (molecular weight: 360-440), 9g of agilawood extract, 3g of peppermint oil, 3g of lemon essential oil and 100ml of water;
the preparation method comprises the following steps:
(1) preparing a flavor slow-release microcapsule liquid: weighing the chitosan and the polypropylene alcohol solid according to the proportion of the raw materials, adding distilled water, stirring and dissolving to ensure that the total wall material concentration in the wall material water solution is 0.03 g/ml. And then adding the agilawood extract, the peppermint oil and the lemon essential oil which are weighed according to the raw material ratio into the wall material aqueous solution, and uniformly stirring. Adding acetic acid into the solution, adjusting the pH value of the solution to 3-4, continuously stirring and mixing for 50min, and then continuously and slowly adding 0.25g/100ml of cross-linking agent pentanediol water solution, wherein the mass ratio of the cross-linking agent to the wall material is 1: 20, keeping stirring for 1.5h, adjusting the pH value of the solution to be neutral by using a sodium hydroxide aqueous solution after the crosslinking reaction is finished, and obtaining the flavor slow-release microcapsule liquid.
(2) Preparing a fragrance sustained-release microcapsule layer: and (3) taking a mask body, carrying out melt-spraying on the mask body, soaking the mask body in the fragrance slow-release microcapsule liquid obtained in the step (1), standing for 12 minutes, taking out, washing with clear water, and drying in a drying box.
(3) Preparing the fragrance sustained-release microcapsule mask: the non-woven fabric outer protective layer, the fragrance sustained-release microcapsule layer and the non-woven fabric inner protective layer are overlapped from outside to inside and are sewn or thermally sealed to obtain a cover body, and two laces (as shown in figure 1) are respectively processed at two sides of the cover body.
Example 2
This example provides a fragrance slowly-releasing microcapsule gauze mask
The main raw materials are proportioned as follows: 15g of chitosan (molecular weight: 20 ten thousand), 15g of polypropylene glycol (molecular weight: 360-440), 18g of agilawood extract, 6g of peppermint oil, 6g of lemon essential oil and 100ml of water;
the preparation method comprises the following steps:
(1) preparing a flavor slow-release microcapsule liquid: weighing the chitosan and the polypropylene alcohol solid according to the proportion of the raw materials, adding distilled water, stirring and dissolving to ensure that the total wall material concentration in the wall material water solution is 0.03 g/ml. And then adding the agilawood extract, the peppermint oil and the lemon essential oil which are weighed according to the raw material ratio into the wall material aqueous solution, and uniformly stirring. Adding acetic acid in the fusion, adjusting the pH value of the solution to 3-4, continuously stirring and mixing for 60min, and then continuously and slowly adding 0.25g/100ml of cross-linking agent pentanediol water solution, wherein the mass ratio of the cross-linking agent to the wall material is 1: and 20, keeping stirring for 2 hours, adjusting the pH value of the solution to be neutral by using a sodium hydroxide aqueous solution after the crosslinking reaction is finished, and obtaining the flavor slow-release microcapsule solution.
(2) Preparing a fragrance sustained-release microcapsule layer: and (3) taking a mask body, carrying out melt-spraying on the mask body, soaking the mask body in the fragrance slow-release microcapsule liquid obtained in the step (1), standing for 10 minutes, taking out, washing with clear water, and drying in a drying box.
(3) Preparing the fragrance sustained-release microcapsule mask: the non-woven fabric outer protective layer, the fragrance sustained-release microcapsule layer and the non-woven fabric inner protective layer are overlapped from outside to inside and are sewn or thermally sealed to obtain a cover body, and two laces are respectively processed on two sides of the cover body.
Example 3
This example provides a fragrance slowly-releasing microcapsule gauze mask
The main raw materials are proportioned as follows: 15g of chitosan (molecular weight: 20 ten thousand), 15g of polypropylene glycol (molecular weight: 360-440), 27g of agilawood extract, 9g of peppermint oil, 9g of lemon essential oil and 100ml of water;
the preparation method comprises the following steps:
(1) preparing a flavor slow-release microcapsule liquid: weighing the chitosan and the polypropylene alcohol solid according to the proportion of the raw materials, adding distilled water, stirring and dissolving to ensure that the total wall material concentration in the wall material water solution is 0.03 g/ml. And then adding the agilawood extract, the peppermint oil and the lemon essential oil which are weighed according to the raw material ratio into the wall material aqueous solution, and uniformly stirring. Adding acetic acid in the fusion, adjusting the pH value of the solution to 3-4, continuously stirring and mixing for 70min, and then continuously and slowly adding 0.25g/100ml of cross-linking agent pentanediol water solution, wherein the mass ratio of the cross-linking agent to the wall material is 1: 20, keeping stirring for 2.5h, adjusting the pH value of the solution to be neutral by using a sodium hydroxide aqueous solution after the crosslinking reaction is finished, and obtaining the flavor slow-release microcapsule liquid.
(2) Preparing a fragrance sustained-release microcapsule layer: and (3) taking a mask body, carrying out melt-spraying on the mask body, soaking the mask body in the fragrance slow-release microcapsule liquid obtained in the step (1), standing for 8 minutes, taking out, washing with clear water, and drying in a drying box.
(3) Preparing the fragrance sustained-release microcapsule mask: the non-woven fabric outer protective layer, the fragrance sustained-release microcapsule layer and the non-woven fabric inner protective layer are overlapped from outside to inside and are sewn or thermally sealed to obtain a cover body, and two laces are respectively processed on two sides of the cover body.
Example 4
The present embodiment provides a fragrance sustained-release micro-capsule mask,
the main raw materials are proportioned as follows: 12g of chitosan (molecular weight: 20 ten thousand), 18g of polypropylene glycol (molecular weight: 360-440), 18g of agilawood extract, 6g of peppermint oil, 6g of lemon essential oil and 100ml of water;
the procedure was as in example 2.
Example 5
The present embodiment provides a fragrance sustained-release micro-capsule mask,
the main raw materials are proportioned as follows: 15g of chitosan (molecular weight is 40 ten thousand), 15g of polypropylene glycol (molecular weight is 360-440), 18g of agilawood extract, 6g of peppermint oil, 6g of lemon essential oil and 100ml of water;
the procedure was as in example 2.
Example 6
The present embodiment provides a fragrance sustained-release micro-capsule mask,
the main raw materials are proportioned as follows: 15g of chitosan (molecular weight: 20 ten thousand), 15g of polypropylene glycol (molecular weight: 2000), 18g of agilawood extract, 6g of peppermint oil, 6g of lemon essential oil and 100ml of water;
the procedure was as in example 2.
Comparative example 1
The present comparative example provides a fragrance sustained-release micro-capsule mask,
the main raw materials are proportioned as follows: 15g of chitosan (molecular weight: 20 ten thousand), 15g of polyvinyl alcohol (molecular weight: 360-440), 18g of agilawood extract, 6g of peppermint oil, 6g of lemon essential oil and 100ml of water;
the procedure was as in example 2.
Comparative example 2
The present comparative example provides a fragrance sustained-release micro-capsule mask,
the main raw materials are proportioned as follows: 18g of agilawood extract, 6g of peppermint oil, 6g of lemon essential oil and 100ml of water;
the preparation method comprises the following steps:
(1) weighing lignum Aquilariae Resinatum extract, oleum Menthae Dementholatum and fructus Citri Limoniae essential oil according to above ratio, adding into 100ml distilled water, and stirring.
(2) Preparing a fragrance layer: and (3) taking the mask body, carrying out melt-spraying on the mask body, soaking the mask body in the solution obtained in the step (1), standing for 10 minutes, taking out the mask body, washing with clear water, and drying.
(3) Preparing a fragrant mask: the non-woven fabric outer protective layer, the fragrance layer and the non-woven fabric inner protective layer are overlapped from outside to inside and are sewn or thermally sealed to obtain a cover body, and two tying bands are respectively processed on two sides of the cover body.
Firstly, the fragrance slow-release performance is measured
The average grain diameter of the fragrance sustained-release microcapsule is as follows: 13.56 um.
And (3) fragrance value determination process: the masks prepared in examples and comparative examples were placed in a fragrance test box, and the fragrance value of the mask was measured using a fragrance tester.
TABLE 1 aroma value measurement Table
As can be seen from table 1, the flavor values of examples 1, 2, and 3 were relatively mild within 72 hours, which indicates that the flavor-sustained micro-capsule mask obtained in the examples of the present invention has good flavor-sustained release performance. In the actual use process of the mask, the mask prepared in example 3 has strong fragrance within 72 hours; the mask prepared in example 1 has light fragrance and is not much different from a common mask; the mask prepared in example 2 had refreshing fragrance and the fragrance substance was released at a proper concentration.
In example 4, the mass ratio of the wall material chitosan to the polypropylene glycol was adjusted to 2: 3, the fragrance value is low after about 60 hours, the slow release duration is obviously shortened, and the slow release performance is reduced to some extent. In examples 5 and 6, the molecular weights of chitosan and polypropylene glycol were respectively increased, and similar to example 4, the fragrance value was lower at 60h, the sustained-release duration was significantly shortened, and the sustained-release performance was reduced to some extent. It is shown that in the invention, the molecular weight and mass ratio of chitosan and polyallyl alcohol have certain influence on the slow release performance of the slow release microcapsule, and the comprehensive slow release effect of the embodiment 2 is the best.
In comparative example 1, chitosan and polyvinyl alcohol were selected as the wall material, and the sustained-release effect was exhibited to some extent, but the flavor value was low as a whole compared to example 2, indicating that the microcapsules did not sufficiently release the flavor of the core material, and the sustained-release of the flavor substance could not be achieved for a long period of time. In comparative example 2, the fragrance value reached the highest concentration after 6 hours when the fragrance material was directly soaked in the meltblown fabric, and then began to decrease, failing to exhibit sustained release effect.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A fragrance slow-release microcapsule mask is characterized by comprising a mask body and a lace; the cover body comprises a fragrance sustained-release microcapsule layer, and the fragrance sustained-release microcapsule layer is prepared by melt-blown fabric loaded by fragrance sustained-release microcapsules;
the core material of the fragrance sustained-release microcapsule comprises: at least one of agilawood extract, peppermint oil, lemon essential oil, sandalwood essential oil, thyme essential oil, benzoin essential oil, cinnamon essential oil, tea tree essential oil, and lavender essential oil;
the wall material of the fragrance sustained-release microcapsule is chitosan and polypropylene glycol;
the mass ratio of the core material to the wall material is 1: 0.5 to 1.5.
2. The flavor sustained-release micro-encapsulated mask according to claim 1,
the molecular weight of the chitosan is 15-30 ten thousand, and the preferred molecular weight is 18-22 ten thousand;
the molecular weight of the polypropylene glycol is 200-4000, and the preferred molecular weight is 200-600.
3. The flavor-sustained release micro-encapsulated mask according to claim 1, wherein the mass ratio of chitosan to polyallyl alcohol is 1: 0.8 to 1.2.
4. The flavor-sustained release micro-encapsulated mask according to claim 2, wherein the mass ratio of chitosan to polyallyl alcohol is 1: 0.9 to 1.1; and/or the mass ratio of the core material to the wall material is 1: 0.8 to 1.2.
5. The flavor sustained-release micro-encapsulated mask according to any one of claims 1 to 4, wherein the core material is an agilawood extract, peppermint oil and lemon essential oil; the mass ratio of the agilawood extract to the mint oil to the lemon essential oil is 2: 0.4-0.9: 0.4 to 0.9.
6. The method for producing a flavor-sustained release micro-encapsulated mask according to any one of claims 1 to 5, comprising the steps of:
(1) preparing a flavor slow-release microcapsule liquid: dissolving the wall material with water, adding the core material into the obtained wall material aqueous solution, adjusting the pH value to acidity, and mixing; then adding a cross-linking agent into the obtained mixed solution, and adjusting the pH value to be neutral after the cross-linking reaction is finished to obtain a flavor slow-release microcapsule liquid;
(2) preparing a fragrance sustained-release microcapsule layer: soaking the melt-blown cloth in the flavor slow-release micro-capsule liquid obtained in the step (1), and drying;
(3) and (3) preparing the fragrance sustained-release microcapsule mask by using the fragrance sustained-release microcapsule layer obtained in the step (2).
7. The method according to claim 6, wherein in the step (1), the concentration of the wall material in the aqueous solution of the wall material is 0.02 to 0.04 g/ml.
8. The preparation method according to claim 6, wherein in the step (1), the cross-linking agent is pentanediol, the cross-linking agent is added to the mixed solution in the form of a cross-linking agent aqueous solution, the concentration of the cross-linking agent in the cross-linking agent aqueous solution is 0.2-0.3 g/100ml, and the mass ratio of the cross-linking agent to the wall material is 1: 15 to 25.
9. The preparation method according to claim 6, wherein in the step (1), the reaction time of the crosslinking reaction is 1.5-2.5 h.
10. The method according to any one of claims 6 to 9, wherein the acidity in step (1) is a pH of 3 to 4, and/or the mixing time in step (1) is 50 to 70 min; and/or the soaking time in the step (2) is 8-12 min.
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| CN112552592A (en) * | 2020-12-08 | 2021-03-26 | 江苏集萃先进高分子材料研究所有限公司 | Preparation process of antibacterial PP melt-spray material with fresh smell |
| CN112914174A (en) * | 2021-01-26 | 2021-06-08 | 成都中医药大学 | Antibacterial and deodorant mask and preparation method thereof |
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