CN111635564A - Novel material capable of being dissolved after damp-heat sterilization for protective clothing and preparation method - Google Patents
Novel material capable of being dissolved after damp-heat sterilization for protective clothing and preparation method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/12—Amylose; Amylopectin; Degradation products thereof
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/08—Cellulose derivatives
- C08J2401/26—Cellulose ethers
- C08J2401/28—Alkyl ethers
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- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/12—Amylose; Amylopectin; Degradation products thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C08K5/00—Use of organic ingredients
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
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Abstract
The invention relates to a novel material capable of being dissolved after moist heat sterilization for protective clothing and a preparation method thereof, belonging to the technical field of material processing, and the material is prepared from the following components in parts by weight: 30-70 parts of amylose, 1-10 parts of carboxymethyl cellulose, 5-30 parts of glycerol, 209910-70 parts of polyvinyl alcohol, 0.1-2 parts of diethylene glycol, 1-6 parts of dioleate, 0.1-2 parts of stearic acid, 0.1-1.5 parts of sodium benzoate, 0.1-5 parts of benzamide and 15-17 parts of water, wherein the preparation method comprises the three steps of material mixing, extrusion granulation and film blowing; the raw materials are natural, the method is simple, and the prepared product has good barrier property and high-temperature water solubility, is low in cost, and is energy-saving and environment-friendly; the membrane prepared by the method can be made into protective clothing, disposable gloves, foot covers, head covers and other medical supplies, has damp-heat sterilization performance, can be dissolved in water at the temperature of 90-110 ℃ to destroy the supplies, and can kill viruses at the same time, thereby effectively blocking the secondary transmission and secondary pollution of the polluted protective supplies.
Description
Technical Field
The invention relates to a novel material for protective clothing and a preparation method thereof, in particular to a novel material for protective clothing capable of being dissolved after moist heat sterilization and a preparation method thereof, and belongs to the technical field of material processing.
Background
The medical protective clothing has the function of generating a bacteria barrier layer to prevent bacteria migration and reduce cross infection. The protection of medical staff is very important, and the protection of important staff including some important posts is very important, so the demand for medical protection products is increased sharply. Meanwhile, due to the strong infectivity of viruses, the requirements on the protective performance of medical protective products are higher and higher. The protective performance of the medical protective clothing has very important significance in the epidemic situation control process, so that the development and research of novel materials of the medical protective clothing with good protective performance have important significance and effect.
In recent years, some scientific research units and enterprises are researching and developing new materials of protective clothing, and a plurality of medical protective clothing materials are developed, and most of the materials use non-woven fabrics as main fabrics.
The medical protective clothing on the market at present can be divided into woven fabric, non-woven fabric and composite material according to the weave structure of the fabric; the disposable type (disposable type), the limited type and the reusable type are divided according to the service life; according to the processing composite technology, there are three main methods of finishing, coating and film covering. The non-woven materials used by several medical protective clothing which are sold and researched in the domestic market at present mainly comprise the following materials: polypropylene spunbonded fabric, spunlace fabric compounded by polyester fiber and wood pulp, polypropylene spunbonded-meltblown-spunbonded composite non-woven fabric, namely SMS or SMMS, high polymer coated fabric, polyethylene breathable film/non-woven fabric composite fabric, and the advantages and the disadvantages of various materials are as follows:
polypropylene spunbonded fabric
The polypropylene spunbonded cloth can be made into antibacterial protective clothing, antistatic protective clothing and the like. The price is low, and the disposable type can greatly reduce the cross infection rate. However, the antistatic water pressure of the material is low, the virus particle blocking efficiency is also low, and the material can only be used as common protective articles such as sterile surgical gowns, disinfection wrapping cloth and the like.
Polyester fiber and wood pulp composite spunlace fabric
The material has soft hand feeling, is similar to the traditional textile, can be treated by alcohol resistance, blood resistance, oil resistance, static resistance, bacteria resistance and the like, can be sterilized by gamma rays, and is a better material for medical protective clothing. However, the antistatic pressure is relatively low, and the virus particle blocking efficiency is poor, so that the antistatic protective clothing material is not an ideal protective clothing material.
Polypropylene spunbond-meltblown-spunbond composite nonwoven, SMS or SMMS, with excellent properties: uniform and beautiful appearance; high hydrostatic pressure resistance; soft hand feeling; good air permeability; a good filtering effect; sixthly, the acid resistance and the alkali resistance are strong. The material can be treated to suit the needs of different applications.
High polymer coated fabric
The protective clothing has the advantages that the protective clothing has very good waterproof performance and bacterial particle blocking performance, can be repeatedly used, but has poor moisture permeability, a large amount of sweat of a human body cannot be discharged, the wearing comfort performance is poor, and the latest progress at home and abroad is that a microporous polytetrafluoroethylene film and the fabric are compounded to obtain the waterproof and breathable function, but the price of the protective clothing as a disposable product is high.
Polyethylene breathable film/non-woven fabric composite cloth
The polyethylene breathable film/non-woven fabric composite material has excellent effect on blocking penetration of bacterial particles and liquid permeation, the hand feeling can be adjusted by changing the softness of the composite fabric, the composite fabric has strong tensile strength, good air permeability and good comfort, can be subjected to disinfection treatment, does not contain toxic components, and has good cost performance.
The invention with application number of 201710926767.0 discloses a barite medical protective clothing material and a preparation method thereof, which are prepared from barite and polyethylene, and the material has the advantages of radiation protection, good air permeability and moisture permeability, reusability and simple preparation process.
The invention has the following patents: 200810052504.2, a medical protective clothing material and a preparation method thereof, the material has a three-layer structure, namely a base cloth, a first functional layer and a second functional layer which are sequentially coated on the base cloth, the base cloth is a high-density chemical fiber filament woven fabric, and the preparation method adopts a dry coating.
The invention has the following patents: 201721096861.X, "a protective clothing material", from interior skin-friendly layer, absorb water layer, enhancement layer and barrier layer composition of including in proper order, compound through the acupuncture between the four-layer structure, with low costs, respond well, can absorb sweat.
At present, the protective clothing takes the renewal of materials as a core and researches and develops towards the aspects of high performance, multifunction, composite, health, comfort and the like. Meanwhile, with the requirement of environmental protection, the degradability is also an important aspect of research.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a novel material for protective clothing capable of being dissolved after moist heat sterilization and a preparation method thereof, the raw materials are natural, the method is simple, and the prepared product has good barrier property, high-temperature water solubility, low cost, energy conservation and environmental protection. The film prepared by the method can be made into protective clothing, disposable gloves, foot covers, head covers and other medical supplies, has the damp-heat sterilization performance, can destroy the supplies after the damp-heat sterilization, and effectively prevents the secondary propagation and the secondary pollution of the contaminated protective supplies.
In order to achieve the purpose, the invention adopts the technical scheme that:
a novel material capable of being dissolved after moist heat sterilization for protective clothing is prepared from the following components in parts by weight:
30-70 parts of amylose with the linear chain ratio of more than 50%, 1-10 parts of carboxymethyl cellulose, 5-30 parts of glycerol, 209910-70 parts of polyvinyl alcohol, 0.1-2 parts of diethylene glycol, 1-6 parts of dioleate, 0.1-2 parts of stearic acid, 0.1-1.5 parts of sodium benzoate, 0.1-5 parts of benzamide and 15-17 parts of water.
The amylose is cassava starch.
Another object of the present invention is to provide a method for preparing a novel material for protective clothing which can be dissolved after moist heat sterilization, comprising the steps of:
(1) mixing materials: heating amylose, carboxymethyl cellulose, glycerol, modified polyvinyl alcohol, diethylene glycol, dioleate, stearic acid, sodium benzoate, benzamide and water to 50-85 ℃ by a high-speed mixer, and mixing;
(2) extruding: adding the mixed material into an extruder through a feeding machine, and extruding and granulating by adopting a double-screw extruder with the length-diameter ratio of 48: 1;
(3) film blowing: the length-diameter ratio is 36: and (3) blowing the film on the particles obtained in the step (2) by using a single-screw extruder of 1 to obtain a novel material with the film thickness of 15 +/-2-25 +/-3 mu m.
The rotating speed of the feeding machine in the step (2) is 10-30r/min, the rotating speed of a screw of the extruding machine is 50-100r/min, and the working temperature of the extruding machine is 120-190 ℃.
The working temperature of the single-screw extruder in the step (3) is 120-190 ℃, and the blowing ratio of the film blowing machine is 1: 4-8, and the drawing speed is 2 +/-0.4 m/min.
The invention has the beneficial effects that:
(1) the invention has natural raw materials and simple method, and the prepared product has good barrier property, high-temperature water solubility, low cost, energy conservation and environmental protection.
(2) The film prepared by the method can be made into protective clothing, disposable gloves, foot covers, head covers and other medical supplies, has the damp-heat sterilization performance, can destroy the supplies after the damp-heat sterilization, and effectively prevents the secondary propagation and secondary pollution of the contaminated protective supplies.
(3) The protective product made of the prepared film can be dissolved in water with the temperature of 90-110 ℃ and can kill viruses at the same time.
Detailed Description
The present invention is further illustrated in detail by the following examples, which are provided only for illustrating the present invention and are not intended to limit the scope of the present invention.
Example 1
A novel material capable of being dissolved after moist heat sterilization for protective clothing is prepared from the following components in parts by weight:
30 parts of amylose with the linear chain ratio of more than 50 percent, 1 part of carboxymethyl cellulose, 5 parts of glycerol, 209910 parts of polyvinyl alcohol, 0.1 part of diethylene glycol, 1 part of dioleate, 0.1 part of stearic acid, 0.1 part of sodium benzoate, 0.1 part of benzamide and 15 parts of water;
a preparation method of a novel material of protective clothing capable of being dissolved after moist heat sterilization comprises the following steps:
(1) mixing materials: heating amylose, carboxymethyl cellulose, glycerol, polyvinyl alcohol 2099, diethylene glycol, dioleate, stearic acid, sodium benzoate, benzamide and water to 50 ℃ by a high-speed mixer for mixing;
(2) extruding: adding the mixed material prepared in the step (1) into an extruder through a feeder, and performing extrusion granulation, wherein the rotating speed of the feeder is 10r/min, the rotating speed of a screw of the extruder is 50r/min, and the working temperature of the extruder is 120 ℃;
(3) film blowing: the length-diameter ratio is 36: 1, blowing a film on the particles obtained in the step (2) by using a single-screw extruder to obtain a film with the thickness of 15 +/-2 mu m; wherein the working temperature of the single screw extruder is 120 ℃, and the blowing ratio of the film blowing machine is 1: 8, the drawing speed is 2 +/-0.4 m/min.
Example 2
A novel material capable of being dissolved after moist heat sterilization for protective clothing is prepared from the following components in parts by weight:
70 parts of cassava starch, 10 parts of carboxymethyl cellulose, 30 parts of glycerol, 209970 parts of polyvinyl alcohol, 2 parts of diethylene glycol, 6 parts of dioleate, 2 parts of stearic acid, 1.5 parts of sodium benzoate, 5 parts of benzamide and 17 parts of water;
a preparation method of a novel material of protective clothing capable of being dissolved after moist heat sterilization comprises the following steps:
(1) mixing materials: heating cassava starch, carboxymethyl cellulose, glycerol, polyvinyl alcohol 2099, diethylene glycol, dioleate, stearic acid, sodium benzoate, benzamide and water to 85 ℃ by a high-speed mixer for mixing;
(2) extruding: adding the mixed material prepared in the step (1) into an extruder through a feeder, and performing extrusion granulation, wherein the rotating speed of the feeder is 30r/min, the rotating speed of a screw of the extruder is 100r/min, and the working temperature of the extruder is 190 ℃;
(3) film blowing: the length-diameter ratio is 36: 1, blowing a film on the particles obtained in the step (2) by using a single-screw extruder to obtain a film with the thickness of 25 +/-3 mu m; wherein the working temperature of the single screw extruder is 190 ℃, and the blowing ratio of the film blowing machine is 1: 4, the drawing speed is 2 +/-0.4 m/min.
Example 3
A novel material capable of being dissolved after moist heat sterilization for protective clothing is prepared from the following components in parts by weight:
50 parts of cassava starch, 5 parts of carboxymethyl cellulose, 15 parts of glycerol, 209940 parts of polyvinyl alcohol, 1 part of diethylene glycol, 3 parts of dioleate, 1 part of stearic acid, 0.8 part of sodium benzoate, 2.5 parts of benzamide and 16 parts of water;
a preparation method of a novel material of protective clothing capable of being dissolved after moist heat sterilization comprises the following steps:
(1) mixing materials: heating cassava starch, carboxymethyl cellulose, glycerol, polyvinyl alcohol 2099, diethylene glycol, dioleate, stearic acid, sodium benzoate, benzamide and water to 65 ℃ by a high-speed mixer for mixing;
(2) extruding: adding the mixed material prepared in the step (1) into an extruder through a feeder, and performing extrusion granulation, wherein the rotating speed of the feeder is 20r/min, the rotating speed of a screw of the extruder is 80r/min, and the working temperature of the extruder is 150 ℃;
(3) film blowing: the length-diameter ratio is 36: 1, blowing a film on the particles obtained in the step (2) by using a single-screw extruder to obtain a film with the thickness of 20 +/-3 mu m; wherein the working temperature of the single screw extruder is 150 ℃, and the blowing ratio of the film blowing machine is 1: 6, the drawing speed is 2 +/-0.4 m/min.
Example 4
A novel material capable of being dissolved after moist heat sterilization for protective clothing is prepared from the following components in parts by weight:
40 parts of cassava starch, 2 parts of carboxymethyl cellulose, 6 parts of glycerol, 209915 parts of polyvinyl alcohol, 0.5 part of diethylene glycol, 2 parts of dioleate, 0.5 part of stearic acid, 0.5 part of sodium benzoate, 0.5 part of benzamide and 15 parts of water;
a preparation method of a novel material of protective clothing capable of being dissolved after moist heat sterilization comprises the following steps:
(1) mixing materials: heating amylose, carboxymethyl cellulose, glycerol, polyvinyl alcohol 2099, diethylene glycol, dioleate, stearic acid, sodium benzoate, benzamide and water to 55 ℃ by a high-speed mixer for mixing;
(2) extruding: adding the mixed material prepared in the step (1) into an extruder through a feeder, and performing extrusion granulation, wherein the rotating speed of the feeder is 15r/min, the rotating speed of a screw of the extruder is 90r/min, and the working temperature of the extruder is 140 ℃;
(3) film blowing: the length-diameter ratio is 36: 1, blowing a film on the particles obtained in the step (2) by using a single-screw extruder to obtain a film with the thickness of 15 +/-2 mu m; wherein the working temperature of the single screw extruder is 140 ℃, and the blowing ratio of the film blowing machine is 1: 5, the drawing speed is 2 +/-0.4 m/min.
Example 5
A novel material capable of being dissolved after moist heat sterilization for protective clothing is prepared from the following components in parts by weight:
60 parts of cassava starch, 8 parts of carboxymethyl cellulose, 25 parts of glycerol, 209960 parts of polyvinyl alcohol, 1.8 parts of diethylene glycol, 5 parts of dioleate, 1.5 parts of stearic acid, 1.2 parts of sodium benzoate, 4 parts of benzamide and 17 parts of water;
a preparation method of a novel material of protective clothing capable of being dissolved after moist heat sterilization comprises the following steps:
(1) mixing materials: heating tapioca starch, carboxymethyl cellulose, glycerol, polyvinyl alcohol 2099, diethylene glycol, dioleate, stearic acid, sodium benzoate, benzamide and water to 80 ℃ by a high-speed mixer for mixing;
(2) extruding: adding the mixed material prepared in the step (1) into an extruder through a feeder, and performing extrusion granulation, wherein the rotating speed of the feeder is 25r/min, the rotating speed of a screw of the extruder is 60r/min, and the working temperature of the extruder is 180 ℃;
(3) film blowing: the length-diameter ratio is 36: 1, blowing a film on the particles obtained in the step (2) by using a single-screw extruder to obtain a film with the thickness of 15 +/-2 mu m; wherein the working temperature of the single screw extruder is 180 ℃, and the blowing ratio of the film blowing machine is 1: 8, the drawing speed is 2 +/-0.4 m/min.
Claims (8)
1. A novel material of protective clothing capable of being dissolved after moist heat sterilization is characterized in that: the composition is prepared from the following components in parts by weight:
30-70 parts of amylose, 1-10 parts of carboxymethyl cellulose, 5-30 parts of glycerol, 209910-70 parts of polyvinyl alcohol, 0.1-2 parts of diethylene glycol, 1-6 parts of dioleate, 0.1-2 parts of stearic acid, 0.1-1.5 parts of sodium benzoate, 0.1-5 parts of benzamide and 15-17 parts of water.
2. The novel material for protective clothing capable of dissolving after moist heat sterilization as claimed in claim 1, wherein: the amylose is cassava starch with the amylose ratio of more than 50%.
3. A preparation method of a novel material of protective clothing capable of being dissolved after moist heat sterilization is characterized in that: the method comprises the following steps:
(1) mixing materials: heating amylose, carboxymethyl cellulose, glycerol, modified polyvinyl alcohol, diethylene glycol, stearic acid, dioleate, sodium benzoate, benzamide and water to 50-85 ℃ by a high-speed mixer, and mixing;
(2) extruding: adding the mixed material into an extruder through a feeding machine, and performing extrusion granulation by adopting a double-screw extruder;
(3) film blowing: and (3) blowing the film on the particles obtained in the step (2) by adopting a single-screw extruder to obtain a novel material with the film thickness of 15 +/-2-25 +/-3 mu m.
4. The method for preparing the novel material for the protective clothing capable of being dissolved after moist heat sterilization according to claim 3, wherein the method comprises the following steps: the rotating speed of the feeding machine in the step (2) is 10-30r/min, the rotating speed of a screw of the extruding machine is 50-100r/min, and the working temperature of the extruding machine is 120-190 ℃.
5. The method for preparing the novel material for the protective clothing capable of being dissolved after moist heat sterilization according to claim 3, wherein the method comprises the following steps: the length-diameter ratio of the double-screw extruder in the step (2) is 48: 1.
6. The method for preparing the novel material for the protective clothing capable of being dissolved after moist heat sterilization according to claim 3, wherein the method comprises the following steps: the length-diameter ratio of the single-screw extruder in the step (3) is 36: 1.
7. the method for preparing the novel material for the protective clothing capable of being dissolved after moist heat sterilization according to claim 3, wherein the method comprises the following steps: the working temperature of the single-screw extruder in the step (3) is 120-190 ℃.
8. The method for preparing the novel material for the protective clothing capable of being dissolved after moist heat sterilization according to claim 3, wherein the method comprises the following steps: the blown film in the step (3) has a blow-up ratio of 1: 4-8, and the drawing speed is 2 +/-0.4 m/min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112300448A (en) * | 2020-10-28 | 2021-02-02 | 泰州诺盟新材料科技有限公司 | Degradable protective clothing novel material capable of being dissolved after sterilization and preparation method |
| CN114957809A (en) * | 2022-06-28 | 2022-08-30 | 深圳绿柜产业发展有限公司 | Protective clothing material with degradable function and production process thereof |
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