CN112726025A - Degradable melt-blown non-woven fabric for mask - Google Patents
Degradable melt-blown non-woven fabric for mask Download PDFInfo
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- CN112726025A CN112726025A CN202011528027.XA CN202011528027A CN112726025A CN 112726025 A CN112726025 A CN 112726025A CN 202011528027 A CN202011528027 A CN 202011528027A CN 112726025 A CN112726025 A CN 112726025A
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- Prior art keywords
- degradable
- tourmaline
- parts
- modified tourmaline
- mask
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Classifications
-
- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
-
- 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
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
-
- 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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
-
- 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
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- 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
- D04H3/009—Condensation or reaction polymers
-
- 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
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/12—Physical properties biodegradable
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Mechanical Engineering (AREA)
- Filtering Materials (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a degradable melt-blown non-woven fabric for a mask, which comprises the following raw materials in parts by weight: 100 parts of composite main material, 3-5 parts of modified tourmaline, 1.5-2 parts of nucleating agent and 4-6 parts of toughening agent; wherein the composite main material comprises polylactic acid and polycaprolactone. The invention has good toughness and filtering performance and can be degraded.
Description
Technical Field
The invention relates to the technical field of non-woven fabrics, in particular to a degradable melt-blown non-woven fabric for a mask.
Background
The medical mask comprises 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 made of a skin-friendly material (such as common sanitary gauze or non-woven fabric), the middle layer is an isolation filter layer, and the outer layer is made of a special material antibacterial layer (such as non-woven fabric or an ultrathin polypropylene melt-blown material layer).
The isolation filter layer of the middle layer of the mask is the most core material of the mask, and is generally polypropylene melt-blown non-woven fabric at present; the filtration mechanism of polypropylene melt-blown nonwoven fabric is divided into two types: mechanical filtration and electrostatic adsorption, which mainly adsorbs particles (such as particles carrying droplets or dust of viruses, bacteria, etc.) with a size of 0.1-0.4 μm.
Since polypropylene is not easily degraded and easily pollutes the environment, it has been proposed to use easily degradable materials to prepare the isolation and filtration layer, such as polylactic acid. However, polylactic acid has the problems of low toughness, difficult production and processing, low electret filtering performance and the like, and the application of polylactic acid in masks is limited.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a degradable melt-blown non-woven fabric for a mask, which has good toughness and filtering performance and can be degraded.
The invention provides a degradable melt-blown non-woven fabric for a mask, which comprises the following raw materials in parts by weight: 100 parts of composite main material, 3-5 parts of modified tourmaline, 1.5-2 parts of nucleating agent and 4-6 parts of toughening agent; wherein the composite main material comprises polylactic acid and polycaprolactone.
Preferably, in the preparation process of the modified tourmaline, the tourmaline and silver salt are ground and uniformly mixed, dried, ball-milled and uniformly mixed, and then calcined to obtain an intermediate material; the silane coupling agent is used for grafting and modifying the intermediate material to obtain the modified tourmaline.
The silane coupling agent is grafted and modified according to the conventional method in the field, for example, the intermediate material is uniformly mixed with ethanol water solution of the silane coupling agent, and the grafting modification is carried out.
The coupling agent can be gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane, gamma-methacryloxypropyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, etc.
Preferably, in the preparation process of the modified tourmaline, the silver salt is silver nitrate.
Preferably, the weight ratio of the tourmaline and the silver salt is 10:0.1-0.3 in the preparation process of the modified tourmaline.
Preferably, the particle size of the tourmaline is less than or equal to 15 μm in the preparation process of the modified tourmaline.
Preferably, the drying temperature is 60-70 ℃ in the preparation process of the modified tourmaline.
Preferably, in the preparation process of the modified tourmaline, the ball milling is dry ball milling.
Preferably, in the preparation process of the modified tourmaline, the ball-to-material ratio is 3-4:1, and the ball milling time is 1-2 h.
Preferably, in the preparation process of the modified tourmaline, the calcination temperature is 550-650 ℃, and the calcination time is 3-3.5 h.
Preferably, the nucleating agent consists of a stearate and ethylene bis stearamide.
Preferably, the weight ratio of stearate to ethylene bis stearamide is 1: 2-3.
Preferably, the toughening agent is maleated linseed oil.
Preferably, the weight ratio of polylactic acid to polycaprolactone is 7-7.5: 2.5-3.
The degradable melt-blown non-woven fabric for the mask can also comprise auxiliary agents such as a lubricant, an anti-ultraviolet agent, an antioxidant and the like.
The preparation method comprises the following steps: uniformly mixing the composite main material, the modified tourmaline, the nucleating agent and the toughening agent, melting and blending, extruding, forming fibers, cooling the fibers, forming a net, and reinforcing the net into cloth.
Has the advantages that:
according to the invention, polylactic acid and polycaprolactone are selected to be matched with each other in a proper proportion, then proper nucleating agent and toughening agent are selected to be matched with each other, so that the mixing of polylactic acid and polycaprolactone is promoted, polycaprolactone is uniformly distributed in polylactic acid in a small particle size to form a sea-island structure, and polycaprolactone, stearate and ethylene bis-stearamide are matched with each other, so that the crystallinity of polylactic acid is improved; the sea-island structure and higher crystallinity can improve the density of the charge traps, thereby improving the electret performance, charge stability and filtering performance of the invention; meanwhile, the polylactic acid, the polycaprolactone and the maleic anhydride linseed oil are matched with each other in a proper proportion, so that the toughness and the processing performance of the polylactic acid are improved, and the polylactic acid is suitable for industrial production; the maleic anhydride linseed oil can solve the problems of too coarse fiber and higher air flow resistance caused by introducing polycaprolactone; in addition, silver salt and tourmaline are ground and calcined to load silver element in tourmaline, and the tourmaline is uniformly dispersed in polylactic acid through silane coupling agent grafting modification, so that the electret and filtering performance of the invention is further improved; and silver element is introduced, so that the antibacterial performance of the invention can be improved; both polylactic acid and polycaprolactone can be degraded, and the environment is not polluted.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A degradable melt-blown non-woven fabric for a mask comprises the following raw materials in parts by weight: 70g of polylactic acid, 30g of polycaprolactone, 3g of modified tourmaline, 0.5g of magnesium stearate, 1.5g of ethylene bis stearamide and 4g of maleic anhydrized linseed oil;
wherein, in the preparation process of the modified tourmaline, 10g of tourmaline with the particle size of less than or equal to 15 mu m and 0.3g of silver nitrate are ground and uniformly mixed, dried at 60 ℃, subjected to dry ball milling for 1h with the ball-to-material ratio of 4:1, and calcined at 650 ℃ for 3h to obtain an intermediate material; dispersing 10g of the intermediate material in an ethanol aqueous solution containing 0.5g of gamma-aminopropyltriethoxysilane, stirring at 80 ℃ for 3h, filtering to obtain a filter cake, washing with water, drying, and pulverizing to obtain the modified tourmaline.
Example 2
A degradable melt-blown non-woven fabric for a mask comprises the following raw materials in parts by weight: 75g of polylactic acid, 25g of polycaprolactone, 5g of modified tourmaline, 0.5g of magnesium stearate, 1g of ethylene bis stearamide and 6g of maleic anhydride linseed oil;
wherein, in the preparation process of the modified tourmaline, 10g of tourmaline with the particle size of less than or equal to 15 mu m and 0.1g of silver nitrate are ground and uniformly mixed, dried at 70 ℃, subjected to dry ball milling for 2h with the ball-to-material ratio of 3:1, and calcined at 550 ℃ for 3.5h to obtain an intermediate material; dispersing 10g of the intermediate material in an ethanol aqueous solution containing 0.5g of gamma-glycidoxypropyltrimethoxysilane, keeping the temperature at 80 ℃, stirring for 3h, filtering to obtain a filter cake, washing with water, drying, and crushing to obtain the modified tourmaline.
Example 3
A degradable melt-blown non-woven fabric for a mask comprises the following raw materials in parts by weight: 73g of polylactic acid, 27g of polycaprolactone, 4g of modified tourmaline, 0.5g of magnesium stearate, 1.2g of ethylene bis stearamide and 5g of maleic anhydride linseed oil;
wherein, in the preparation process of the modified tourmaline, 10g of tourmaline with the particle size of less than or equal to 15 mu m and 0.2g of silver nitrate are ground and uniformly mixed, dried at 65 ℃, ball-milled for 1-2h by a dry method according to the ball-to-material ratio of 3.5:1, and then calcined for 3.3h at 600 ℃ to obtain an intermediate material; dispersing 10g of the intermediate material in an ethanol aqueous solution containing 0.5g of vinyl trimethoxy silane, keeping the temperature and stirring for 3h at 80 ℃, filtering to obtain a filter cake, washing with water, drying and crushing to obtain the modified tourmaline.
Comparative example 1
The procedure is as in example 3 except that polycaprolactone, magnesium stearate and ethylene bis stearamide are not added.
Comparative example 2
The procedure of example 3 was repeated except that modified tourmaline was not added.
Comparative example 3
The procedure of example 3 was repeated except that no maleated linseed oil was added.
Comparative example 4
"magnesium stearate 0.5g, ethylene bis stearamide 1.2 g" was replaced with "TMC-3061.2 g", and the same procedure as in example 3 was repeated.
Comparative example 5
Pure polylactic acid.
Experiment of
Melt-blown non-woven fabrics with the same size and the same gram weight are manufactured according to the same method in the examples 1-3 and the comparative examples 1-5, the electret voltage is 20KV, and the electret time is 30s, so that melt-blown non-woven fabrics after electret are obtained.
a. The filtration efficiency and the airflow resistance of each group of melt-blown non-woven fabrics are tested according to GB/T2626-.
b. The tensile properties were tested according to GB/T1040.1-2018. The results are shown in Table 1.
TABLE 1 test results
| Detecting items | Air flow resistance (Pa) | Filtration efficiency (%) | Tensile Strength (MPa) | Elongation at Break (%) |
| Example 1 | 20 | 95.4 | 0.60 | 14.44 |
| Example 2 | 21 | 95.9 | 0.59 | 14.02 |
| Example 3 | 18 | 96.1 | 0.62 | 14.83 |
| Comparative example 1 | 26 | 87.5 | 0.44 | 7.86 |
| Comparative example 2 | 7.9 | 31.5 | 0.49 | 10.0 |
| Comparative example 3 | 63 | 93.4 | 0.48 | 9.91 |
| Comparative example 4 | 25 | 91.5 | 0.49 | 10.1 |
| Comparative example 5 | 8.5 | 13.53 | 0.11 | 6.20 |
As can be seen from the table above, in comparative example 3 and comparative examples 1 to 3, the polycaprolactone, magnesium stearate and ethylene bis stearamide, the modified tourmaline and the maleated linseed oil are matched with each other, so that the modified linseed oil provided by the invention has good mechanical properties and filtration properties, and the airflow resistance is low; the maleic anhydrified linseed oil from example 3 and comparative example 3 can reduce the air flow resistance; from example 3, comparative example 2 and comparative example 4, it can be seen that the mechanical properties and filtration properties of the present invention can be improved by selecting a suitable nucleating agent; as can be seen from example 3 and comparative example 5, the present invention greatly improves the mechanical properties and filtration properties of pure polylactic acid.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The degradable melt-blown non-woven fabric for the mask is characterized by comprising the following raw materials in parts by weight: 100 parts of composite main material, 3-5 parts of modified tourmaline, 1.5-2 parts of nucleating agent and 4-6 parts of toughening agent; wherein the composite main material comprises polylactic acid and polycaprolactone.
2. The degradable melt-blown non-woven fabric for the mask according to claim 1, wherein in the preparation process of the modified tourmaline, the tourmaline and silver salt are ground and uniformly mixed, dried, ball-milled and uniformly mixed, and then calcined to obtain an intermediate material; the silane coupling agent is used for grafting and modifying the intermediate material to obtain the modified tourmaline.
3. The degradable melt-blown non-woven fabric for masks according to claim 2, wherein in the preparation process of the modified tourmaline, the silver salt is silver nitrate; preferably, the weight ratio of the tourmaline and the silver salt is 10:0.1-0.3 in the preparation process of the modified tourmaline.
4. The degradable meltblown nonwoven fabric for mask as claimed in claim 2 or 3, wherein the particle size of tourmaline is not more than 15 μm during the process of preparing the modified tourmaline.
5. The degradable meltblown nonwoven fabric for mask according to any one of claims 2 to 4, wherein the drying temperature is 60 to 70 ℃ during the preparation of the modified tourmaline.
6. The degradable melt-blown non-woven fabric for masks according to any one of claims 2 to 5, wherein in the preparation process of the modified tourmaline, the ball milling is dry ball milling; preferably, in the preparation process of the modified tourmaline, the ball-to-material ratio is 3-4:1, and the ball milling time is 1-2 h.
7. The degradable meltblown nonwoven fabric for masks according to any one of claims 2 to 6, wherein the calcination temperature is 550-650 ℃ and the calcination time is 3-3.5h in the preparation process of the modified tourmaline.
8. The degradable meltblown nonwoven fabric for mask according to any of claims 1 to 7, wherein the nucleating agent is composed of stearate and ethylene bis stearamide; preferably, the weight ratio of stearate to ethylene bis stearamide is 1: 2-3.
9. The degradable meltblown nonwoven fabric for mask according to any of claims 1 to 8, wherein the toughening agent is maleated linseed oil.
10. The degradable meltblown nonwoven fabric for mask according to any one of claims 1 to 9, wherein the weight ratio of polylactic acid to polycaprolactone is 7-7.5: 2.5-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011528027.XA CN112726025A (en) | 2020-12-22 | 2020-12-22 | Degradable melt-blown non-woven fabric for mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011528027.XA CN112726025A (en) | 2020-12-22 | 2020-12-22 | Degradable melt-blown non-woven fabric for mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112726025A true CN112726025A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011528027.XA Withdrawn CN112726025A (en) | 2020-12-22 | 2020-12-22 | Degradable melt-blown non-woven fabric for mask |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113243589A (en) * | 2021-05-12 | 2021-08-13 | 惠州市栢诗新材料有限公司 | Washable long-acting filtering graphene antibacterial mask and preparation method thereof |
| CN115110204A (en) * | 2022-06-23 | 2022-09-27 | 赵美一 | Polylactic acid composite melt-blown filter material and preparation method thereof |
| CN115467041A (en) * | 2021-11-30 | 2022-12-13 | 上海涵点科技有限公司 | Polylactic acid melt-blown fabric with good filterability and shielding property and application thereof |
| GB2608470A (en) * | 2021-06-28 | 2023-01-04 | China Yunhong Holdings Co Ltd | Fully degradable non-woven fabric produced by melt-blow extrusion and application thereof in production of medical masks |
-
2020
- 2020-12-22 CN CN202011528027.XA patent/CN112726025A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113243589A (en) * | 2021-05-12 | 2021-08-13 | 惠州市栢诗新材料有限公司 | Washable long-acting filtering graphene antibacterial mask and preparation method thereof |
| CN113243589B (en) * | 2021-05-12 | 2023-02-28 | 惠州市栢诗新材料有限公司 | Washable long-acting filtering graphene antibacterial mask and preparation method thereof |
| GB2608470A (en) * | 2021-06-28 | 2023-01-04 | China Yunhong Holdings Co Ltd | Fully degradable non-woven fabric produced by melt-blow extrusion and application thereof in production of medical masks |
| GB2608470B (en) * | 2021-06-28 | 2024-07-03 | China Yunhong Holdings Co Ltd | Fully degradable non-woven fabric produced by melt-blow extrusion and application thereof in production of medical masks |
| CN115467041A (en) * | 2021-11-30 | 2022-12-13 | 上海涵点科技有限公司 | Polylactic acid melt-blown fabric with good filterability and shielding property and application thereof |
| CN115110204A (en) * | 2022-06-23 | 2022-09-27 | 赵美一 | Polylactic acid composite melt-blown filter material and preparation method thereof |
| CN115110204B (en) * | 2022-06-23 | 2024-02-09 | 星固科技(陕西)有限公司 | Polylactic acid composite melt-blown filter material and preparation method thereof |
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Application publication date: 20210430 |
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