CN111588121A - Protective mask with high interception, killing and recycling functions - Google Patents
Protective mask with high interception, killing and recycling functions Download PDFInfo
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- CN111588121A CN111588121A CN202010455441.6A CN202010455441A CN111588121A CN 111588121 A CN111588121 A CN 111588121A CN 202010455441 A CN202010455441 A CN 202010455441A CN 111588121 A CN111588121 A CN 111588121A
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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
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/12—Hygroscopic; Water retaining
- A41D31/125—Moisture handling or wicking function through layered materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
- C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a protective mask with high interception, killing performance and recycling use, which relates to the technical field of sanitary products and comprises a mask body and ear belts, wherein a nose bridge strip is arranged in the mask body, the mask body sequentially consists of a moisture absorption inner layer, a filtering middle layer and a hydrophobic outer layer from inside to outside, and the moisture absorption inner layer is hydrophilic spun-bonded non-woven fabric prepared from modified PP granules by a spun-bonding method. According to the invention, polypropylene is used as a raw material, carboxyl is introduced into the molecular structure of the polypropylene through maleic anhydride grafting and maleic anhydride hydrolysis, and the hydrophilicity of the carboxyl can endow the prepared spunbonded non-woven fabric with good moisture absorption performance so as to effectively absorb moisture in the exhaled air of a human body, improve the wearing comfort of the mask and prevent the moisture from entering the filtering intermediate layer to influence the filtering effect.
Description
The technical field is as follows:
the invention relates to the technical field of sanitary articles, in particular to a protective mask which is high in interception, killing and recyclable.
Background art:
the protective mask is a respiratory protection article aiming at preventing the transmission of some respiratory infectious microorganisms and protecting the health. The protective mask is divided into a daily protective mask and a medical protective mask, the daily protective mask is made of a filtering material, and a wearer can overcome the resistance of the filtering material to air flow by breathing independently, so the respirator is called a self-absorption filtering respirator; the medical protective mask consists of a mask body and a tightening belt, wherein the mask body is divided into an inner layer, a middle layer and an outer layer, the inner layer is common sanitary gauze or non-woven fabric, the middle layer is a superfine polypropylene fiber melt-blown material layer, and the outer layer is a non-woven fabric or ultrathin polypropylene melt-blown material layer.
At present, the masks used by people are mostly disposable masks, the protection time is short, and the replacement frequency is high, so that the waste of the discarded masks is increased sharply, and the masks are in a state of short supply. The invention develops a novel protective mask based on the purposes of prolonging the service life of the mask and ensuring the interception performance of the mask and the killing performance to common bacteria and viruses, and the novel protective mask has good air permeability and moisture absorption and can also obviously improve the wearing comfort of a wearer.
The invention content is as follows:
the invention aims to solve the technical problem of providing a protective mask with high interception, killing performance and recycling performance.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
high protection mask who intercepts, can kill nature and circulated use, including gauze mask body and ear area, be equipped with the bridge of the nose strip in the gauze mask body, the gauze mask body comprises moisture absorption inlayer, filtration intermediate level and hydrophobic skin from inside to outside in proper order, the moisture absorption inlayer adopts the hydrophilic type who is made by modified PP aggregate through the spunbond nonwoven, the preparation method of modified PP aggregate is as follows:
(1) dissolving maleic anhydride and an initiator in an organic solvent, adding the organic solvent into a high-speed mixer, adding polypropylene into the high-speed mixer, uniformly mixing, feeding the obtained mixture into a double-screw extruder, and carrying out melt reaction to obtain maleic anhydride grafted polypropylene;
(2) and adding the maleic anhydride grafted polypropylene and alkali liquor into a high-speed mixer, adding the polypropylene into the high-speed mixer, uniformly mixing, feeding the obtained mixture into a double-screw extruder, performing melt extrusion granulation, washing with water, and drying to obtain the modified PP granules.
The mass ratio of the polypropylene to the maleic anhydride is 100: 5-20.
The initiator is dicumyl peroxide, and the organic solvent is selected from one of DMF, toluene and DMSO.
The alkali liquor is sodium hydroxide solution with the concentration of 0.5-2 mol/L.
The temperature of each section from the feeding port to the machine head of the double-screw extruder is as follows: 190 ℃ at 160 ℃ at 170 ℃ at 200 ℃ at 170 ℃ at 180 ℃ at 210 ℃ at 180 ℃ at 170 ℃ at 200 ℃ at 170 ℃ at 250 r/min.
The method for processing the hydrophilic spun-bonded non-woven fabric by using the modified PP granules comprises the following processing steps:
(1) dissolving modified PP granules and hydrogenated rosin pentaerythritol ester in DMF (dimethyl formamide) to prepare spinning stock solution, extruding the spinning stock solution through a spinning nozzle, entering a coagulating bath, then sequentially entering a preheating bath, a water washing tank and a stretching bath, oiling, drying, then reeling through a crimping machine, and carrying out steam heat setting to obtain hydrophilic modified PP fibers;
(2) and (3) paving the hydrophilic modified PP fiber on a net forming curtain through a wire swinging roller, and carrying out hot rolling, trimming and winding to obtain the hydrophilic spunbonded non-woven fabric.
The mass ratio of the modified PP granules to the hydrogenated rosin pentaerythritol ester is 100: 1-10.
The extrusion speed of the spinneret is 0.5-3m/min, and the stretching multiple is 3-8 times.
The temperature of the coagulating bath is 15-35 ℃, the temperature of the preheating bath is 60-80 ℃, the temperature of the stretching bath is 90-110 ℃, the stretching multiple is 1.1-1.5 times, and the steam pressure of the heat setting is 0.1-0.5 MPa.
The temperature of the hot smooth roller is 180-210 ℃, and the temperature of the blooming roller is 200-230 ℃.
The invention has the beneficial effects that: according to the invention, polypropylene is used as a raw material, carboxyl is introduced into the molecular structure of the polypropylene through maleic anhydride grafting and maleic anhydride hydrolysis, and the hydrophilicity of the carboxyl can endow the prepared spunbonded non-woven fabric with good moisture absorption performance so as to effectively absorb moisture in the air exhaled by a human body, improve the wearing comfort of the mask and prevent the moisture from entering the filtering intermediate layer to influence the filtering effect; the invention also improves the processing performance of the polypropylene by adding the hydrogenated rosin pentaerythritol ester during the spinning processing and enhances the mechanical strength of the spun-bonded non-woven fabric.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The PP in the following examples and comparative examples is from Ningbo Template 5090T.
Example 1
Preparation of modified PP pellets:
(1) dissolving 15g of maleic anhydride and 0.5g of dicumyl peroxide in DMF (dimethyl formamide), adding into a high-speed mixer, adding 100g of polypropylene into the high-speed mixer, uniformly mixing, and feeding the obtained mixture into a double-screw extruder, wherein the temperature of each section from a feeding port to a machine head of the extruder is as follows: carrying out melt reaction at 175 ℃, 188 ℃, 192 ℃, 204 ℃, 205 ℃, 193 ℃, 186 ℃ and the screw rotation speed of 150r/min to obtain maleic anhydride grafted polypropylene;
(2) adding the maleic anhydride grafted polypropylene and 1mol/L sodium hydroxide solution into a high-speed mixer, adding the polypropylene into the high-speed mixer, uniformly mixing, and then sending the obtained mixture into a double-screw extruder, wherein the temperature of each section from a feeding port to a machine head of the extruder is as follows: 181 ℃, 192 ℃, 198 ℃, 208 ℃, 202 ℃, 191 ℃, 185 ℃ and the screw rotation speed of 150r/min, and obtaining the modified PP granules by melt extrusion granulation, water washing and drying.
Preparation of hydrophilic spunbonded nonwoven fabric:
(1) dissolving 100g of modified PP granules and 4g of hydrogenated rosin pentaerythritol ester in DMF to prepare a spinning stock solution with the solid content of 25 wt%, extruding the spinning stock solution through a spinneret (the extrusion speed is 2m/min, and the stretching ratio is 5 times), feeding the spinning stock solution into a coagulating bath (the coagulating bath is an aqueous solution containing 35 wt% of DMF, and the temperature is 25 ℃), sequentially feeding the spinning stock solution into a preheating bath (the preheating bath is an aqueous solution containing 8 wt% of DMF, and the temperature is 70 ℃), a water washing tank (the water temperature is 50 ℃), and a stretching bath (the stretching bath is an aqueous solution containing 2 wt% of sodium dodecyl benzene sulfonate, and the temperature is 105 ℃, and the stretching ratio is 1.2 times), oiling, drying, coiling by a crimping machine, and carrying out steam heat setting (the steam pressure is 0.3MPa, and the setting time is 20min) to obtain the hydrophilic modified PP fiber;
(2) and (3) paving the hydrophilic modified PP fiber on a net forming curtain through a wire swinging roller, carrying out hot rolling (the temperature of a hot rolling smooth roller is 210 ℃, and the temperature of a pattern roller is 220 ℃), cutting edges, and winding to obtain the hydrophilic spunbonded non-woven fabric.
Example 2
Example 2 differs from example 1 in that the amount of hydrogenated rosin pentaerythritol ester was adjusted, as was the case in example 1.
Preparation of modified PP pellets:
(1) dissolving 15g of maleic anhydride and 0.5g of dicumyl peroxide in DMF (dimethyl formamide), adding into a high-speed mixer, adding 100g of polypropylene into the high-speed mixer, uniformly mixing, and feeding the obtained mixture into a double-screw extruder, wherein the temperature of each section from a feeding port to a machine head of the extruder is as follows: carrying out melt reaction at 175 ℃, 188 ℃, 192 ℃, 204 ℃, 205 ℃, 193 ℃, 186 ℃ and the screw rotation speed of 150r/min to obtain maleic anhydride grafted polypropylene;
(2) adding the maleic anhydride grafted polypropylene and 1mol/L sodium hydroxide solution into a high-speed mixer, adding the polypropylene into the high-speed mixer, uniformly mixing, and then sending the obtained mixture into a double-screw extruder, wherein the temperature of each section from a feeding port to a machine head of the extruder is as follows: 181 ℃, 192 ℃, 198 ℃, 208 ℃, 202 ℃, 191 ℃, 185 ℃ and the screw rotation speed of 150r/min, and obtaining the modified PP granules by melt extrusion granulation, water washing and drying.
Preparation of hydrophilic spunbonded nonwoven fabric:
(1) dissolving 100g of modified PP granules and 5g of hydrogenated rosin pentaerythritol ester in DMF to prepare a spinning stock solution with the solid content of 25 wt%, extruding the spinning stock solution through a spinneret (the extrusion speed is 2m/min, and the stretching ratio is 5 times), feeding the spinning stock solution into a coagulating bath (the coagulating bath is an aqueous solution containing 35 wt% of DMF, and the temperature is 25 ℃), sequentially feeding the spinning stock solution into a preheating bath (the preheating bath is an aqueous solution containing 8 wt% of DMF, and the temperature is 70 ℃), a water washing tank (the water temperature is 50 ℃), and a stretching bath (the stretching bath is an aqueous solution containing 2 wt% of sodium dodecyl benzene sulfonate, and the temperature is 105 ℃, and the stretching ratio is 1.2 times), oiling, drying, coiling by a crimping machine, and carrying out steam heat setting (the steam pressure is 0.3MPa, and the setting time is 20min) to obtain the hydrophilic modified PP fiber;
(2) and (3) paving the hydrophilic modified PP fiber on a net forming curtain through a wire swinging roller, carrying out hot rolling (the temperature of a hot rolling smooth roller is 210 ℃, and the temperature of a pattern roller is 220 ℃), cutting edges, and winding to obtain the hydrophilic spunbonded non-woven fabric.
Comparative example 1
Comparative example 1 differs from example 1 in that no hydrogenated rosin pentaerythritol ester was added during the spunbond process, as in example 1.
Preparation of modified PP pellets:
(1) dissolving 15g of maleic anhydride and 0.5g of dicumyl peroxide in DMF (dimethyl formamide), adding into a high-speed mixer, adding 100g of polypropylene into the high-speed mixer, uniformly mixing, and feeding the obtained mixture into a double-screw extruder, wherein the temperature of each section from a feeding port to a machine head of the extruder is as follows: carrying out melt reaction at 175 ℃, 188 ℃, 192 ℃, 204 ℃, 205 ℃, 193 ℃, 186 ℃ and the screw rotation speed of 150r/min to obtain maleic anhydride grafted polypropylene;
(2) adding the maleic anhydride grafted polypropylene and 1mol/L sodium hydroxide solution into a high-speed mixer, adding the polypropylene into the high-speed mixer, uniformly mixing, and then sending the obtained mixture into a double-screw extruder, wherein the temperature of each section from a feeding port to a machine head of the extruder is as follows: 181 ℃, 192 ℃, 198 ℃, 208 ℃, 202 ℃, 191 ℃, 185 ℃ and the screw rotation speed of 150r/min, and obtaining the modified PP granules by melt extrusion granulation, water washing and drying.
Preparation of hydrophilic spunbonded nonwoven fabric:
(1) dissolving 104g of modified PP granules in DMF to prepare a spinning stock solution with the solid content of 25 wt%, extruding the spinning stock solution through a spinning nozzle (the extrusion speed is 2m/min, and the stretching ratio is 5 times), feeding the spinning stock solution into a coagulating bath (the coagulating bath is an aqueous solution containing 35 wt% of DMF, and the temperature is 25 ℃), sequentially feeding the spinning stock solution into a preheating bath (the preheating bath is an aqueous solution containing 8 wt% of DMF, and the temperature is 70 ℃), a water washing tank (the water temperature is 50 ℃), a stretching bath (the stretching bath is an aqueous solution containing 2 wt% of sodium dodecyl benzene sulfonate, and the temperature is 105 ℃, and the stretching ratio is 1.2 times), oiling, drying, coiling by a crimping machine, and carrying out steam heat setting (the steam pressure is 0.3MPa, and the setting time is 20min) to obtain the hydrophilic modified PP fiber;
(2) and (3) paving the hydrophilic modified PP fiber on a net forming curtain through a wire swinging roller, carrying out hot rolling (the temperature of a hot rolling smooth roller is 210 ℃, and the temperature of a pattern roller is 220 ℃), cutting edges, and winding to obtain the hydrophilic spunbonded non-woven fabric.
Comparative example 2
Comparative example 2 differs from example 1 in that no modification treatment was applied to PP, and the remainder was the same as in example 1.
Preparation of spunbonded nonwoven fabric:
(1) dissolving 100g of PP granules and 4g of hydrogenated rosin pentaerythritol ester in DMF to prepare a spinning stock solution with the solid content of 25 wt%, extruding the spinning stock solution through a spinneret (the extrusion speed is 2m/min, and the stretching ratio is 5 times), feeding the spinning stock solution into a coagulating bath (the coagulating bath is an aqueous solution containing 35 wt% of DMF, and the temperature is 25 ℃), sequentially feeding the spinning stock solution into a preheating bath (the preheating bath is an aqueous solution containing 8 wt% of DMF, and the temperature is 70 ℃), a water washing tank (the water temperature is 50 ℃), a stretching bath (the stretching bath is an aqueous solution containing 2 wt% of sodium dodecyl benzene sulfonate, the temperature is 105 ℃, and the stretching ratio is 1.2 times), oiling, drying, coiling by a crimping machine, and carrying out steam heat setting (the steam pressure is 0.3MPa, and the setting time is 20min) to obtain the hydrophilic modified PP fiber;
(2) and (3) paving the hydrophilic modified PP fiber on a net forming curtain through a wire swinging roller, carrying out hot rolling (the temperature of a hot rolling smooth roller is 210 ℃, and the temperature of a pattern roller is 220 ℃), cutting edges, winding, and carrying out hydrophilic spun-bonded non-woven fabric.
The nonwoven fabrics produced in the above examples and comparative examples were subjected to the performance test, and the test results are shown in Table 1.
The breaking strength was determined by reference to the standard FZ/T64005-.
Taking a non-woven fabric sample with the size of 10cm × 10cm, placing the non-woven fabric sample in an environment with the temperature of 20 ℃ and the RH of 65 percent for 24 hours, weighing, and recording as G0Putting a sample into a beaker filled with 2L of deionized water, keeping the temperature at 20 ℃, naturally sinking the sample after the sample absorbs water, pressing the sample into the water by using a glass rod until the sample can not naturally sink, taking out the sample after the sample is completely soaked in the water for 10min, naturally flatly placing the sample on filter paper with the size of 10cm × 10cm, absorbing excessive water, controlling the liquid carrying rate to be 100 +/-5%, weighing, and marking as G1(ii) a The sample was vertically suspended in a 20 ℃ 65% RH atmosphere for 4h, and weighed as G2. Calculating the moisture absorption and quick drying rate of the non-woven fabric according to the following formula: k ═ G1-G2)/(G1-G0) (ii) a The test was performed 5 times in parallel and the average was taken.
TABLE 1 breaking Strength and moisture absorption quick drying Rate of nonwoven Fabric
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. High protection mask who intercepts, can kill nature and circulated use, including gauze mask body and ear area, be equipped with the bridge of the nose strip in the gauze mask body, the gauze mask body comprises moisture absorption inlayer, filtration intermediate level and hydrophobic skin from inside to outside in proper order, its characterized in that: the moisture absorption inner layer adopts hydrophilic spun-bonded non-woven fabric prepared from modified PP granules by a spun-bonding method, and the preparation method of the modified PP granules comprises the following steps:
(1) dissolving maleic anhydride and an initiator in an organic solvent, adding the organic solvent into a high-speed mixer, adding polypropylene into the high-speed mixer, uniformly mixing, feeding the obtained mixture into a double-screw extruder, and carrying out melt reaction to obtain maleic anhydride grafted polypropylene;
(2) and adding the maleic anhydride grafted polypropylene and alkali liquor into a high-speed mixer, adding the polypropylene into the high-speed mixer, uniformly mixing, feeding the obtained mixture into a double-screw extruder, performing melt extrusion granulation, washing with water, and drying to obtain the modified PP granules.
2. The high entrapment, sterilizable, and recyclable protective facial mask of claim 1, wherein: the mass ratio of the polypropylene to the maleic anhydride is 100: 5-20.
3. The high entrapment, sterilizable, and recyclable protective facial mask of claim 1, wherein: the initiator is dicumyl peroxide, and the organic solvent is selected from one of DMF, toluene and DMSO.
4. The high entrapment, sterilizable, and recyclable protective facial mask of claim 1, wherein: the alkali liquor is sodium hydroxide solution with the concentration of 0.5-2 mol/L.
5. The high entrapment, sterilizable, and recyclable protective facial mask of claim 1, wherein: the temperature of each section from the feeding port to the machine head of the double-screw extruder is as follows: 190 ℃ at 160 ℃ at 170 ℃ at 200 ℃ at 170 ℃ at 180 ℃ at 210 ℃ at 180 ℃ at 170 ℃ at 200 ℃ at 170 ℃ at 250 r/min.
6. A process for the manufacture of hydrophilic spunbonded nonwovens with modified PP pellets prepared according to any of claims 1 to 5, characterised in that it comprises the following process steps:
(1) dissolving modified PP granules and hydrogenated rosin pentaerythritol ester in DMF (dimethyl formamide) to prepare spinning stock solution, extruding the spinning stock solution through a spinning nozzle, entering a coagulating bath, then sequentially entering a preheating bath, a water washing tank and a stretching bath, oiling, drying, then reeling through a crimping machine, and carrying out steam heat setting to obtain hydrophilic modified PP fibers;
(2) and (3) paving the hydrophilic modified PP fiber on a net forming curtain through a wire swinging roller, and carrying out hot rolling, trimming and winding to obtain the hydrophilic spunbonded non-woven fabric.
7. The method for processing the hydrophilic spunbonded nonwoven fabric by using the modified PP granules according to claim 6, which is characterized in that: the mass ratio of the modified PP granules to the hydrogenated rosin pentaerythritol ester is 100: 1-10.
8. The method for processing the hydrophilic spunbonded nonwoven fabric by using the modified PP granules according to claim 6, which is characterized in that: the extrusion speed of the spinneret is 0.5-3m/min, and the stretching multiple is 3-8 times.
9. The method for processing the hydrophilic spunbonded nonwoven fabric by using the modified PP granules according to claim 6, which is characterized in that: the temperature of the coagulating bath is 15-35 ℃, the temperature of the preheating bath is 60-80 ℃, the temperature of the stretching bath is 90-110 ℃, the stretching multiple is 1.1-1.5 times, and the steam pressure of the heat setting is 0.1-0.5 MPa.
10. The method for processing the hydrophilic spunbonded nonwoven fabric by using the modified PP granules according to claim 6, which is characterized in that: the temperature of the hot smooth roller is 180-210 ℃, and the temperature of the blooming roller is 200-230 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010455441.6A CN111588121A (en) | 2020-05-26 | 2020-05-26 | Protective mask with high interception, killing and recycling functions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010455441.6A CN111588121A (en) | 2020-05-26 | 2020-05-26 | Protective mask with high interception, killing and recycling functions |
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| CN111588121A true CN111588121A (en) | 2020-08-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113134267A (en) * | 2021-04-23 | 2021-07-20 | 东华大学 | Thermal comfort filter material with multilayer structure and preparation method thereof |
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Application publication date: 20200828 |