Heat-insulating, fireproof and dustproof ergonomic mask

Abstract

The invention discloses a heat-insulation fireproof dustproof ergonomic mask which comprises a mask body, ear straps are arranged on the two sides of the mask body respectively, the mask body comprises a heat-insulation fireproof layer, a non-woven fabric layer, a filtering melt-blown fabric layer and a veneering silk layer which are sequentially arranged from outside to inside, and the heat-insulation fireproof layer is made of a graphene / polyimide mixed material. Sealing protrusions are symmetrically arranged on the mask body. The mask can achieve good heat insulation, fire prevention and dust prevention effects.

Description

Technical Field

[0001] The invention belongs to the technical field of health care, and in particular relates to a heat-insulating, fire-proof, and dust-proof ergonomic mask. Background Art

[0002] Masks are very common items used by humans to prevent infectious diseases and dust. Currently, people mainly use disposable medical protective masks, medical surgical masks and medical protective masks on the market. Although existing masks have certain dust and virus protection effects, they do not have the functions of heat insulation and fire prevention. Therefore, there is an urgent need for an ergonomic mask that is heat-insulating, fire-proof and dust-proof to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a heat-insulating, fire-proof and dust-proof ergonomic mask to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides an ergonomic mask with heat insulation, fire prevention and dust prevention, comprising a mask body, ear straps are respectively provided on both sides of the mask body, the mask body comprises a heat insulation and fire prevention layer, a non-woven fabric layer, a filter melt-blown fabric layer and a veneer silk layer arranged in sequence from the outside to the inside, the heat insulation and fire prevention layer is made of a graphene / polyimide mixed material, and sealing protrusions are symmetrically provided on the mask body.

[0005] Preferably, silk, non-woven fabric and fireproof cotton are provided in the sealing protrusion.

[0006] Preferably, the preparation of the heat-insulating and fire-proof layer comprises the following steps:

[0007] S1. Sending 1-15% graphene / o-xylene suspension into a high-pressure homogenizer for dispersion;

[0008] S2, mixing the dispersed graphene suspension with 4,4'-diaminodiphenyl ether, 3,3',4,4'-triphenyl diether tetracarboxylic dianhydride and xylene in a certain proportion;

[0009] S3, filtering the mixed liquid in S2 and vacuum drying;

[0010] S4, mixing the vacuum-dried substance in S3 with N,N-dimethylacetamide;

[0011] S5. Heating and maintaining the temperature of the substances mixed in S4.

[0012] Preferably, the pressure of the high pressure homogenizer in S1 is 1500-2500 MPa.

[0013] Preferably, the temperature during mixing in S2 is between 150°C and 180°C.

[0014] Preferably, the mixed materials in S5 are heated to 350° C. at a rate of 5-15° C. / min and kept at this temperature for 3 hours.

[0015] Preferably, the preparation of the heat-insulating and fire-proof layer comprises the following steps:

[0016] A. Prepare the inner coating by evaporating a graphene oxide solution with a concentration of 0.1-20 mg / mL onto the surface of the clothing substrate;

[0017] B. preparing an outer coating layer by evaporating a polyamic acid colloid onto the inner coating layer prepared in step A;

[0018] C. Drying the coating: After the preparation in step B is completed, the outer coating is dried at 350° C. for 3 hours to complete the imidization of the polyamic acid and form a graphene / polyimide mixed colloid composite coating.

[0019] Preferably, the evaporation conditions of the inner coating in step A are to use non-vacuum evaporation at an evaporation temperature of 20-110° C. and to control the evaporation time to be 0.5-3 h.

[0020] Preferably, the evaporation conditions of the outer coating in step B are to use non-vacuum evaporation at an evaporation temperature of 100-150° C. and control the evaporation time to be 0.5-3 h.

[0021] Preferably, the mass percentage concentration of the polyimide colloid solution in step C is 10-50wt.%.

[0022] The invention discloses the following technical effects: the mask of the invention can achieve good heat insulation, fire prevention and dust prevention effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a structural schematic diagram of the heat-insulating, fire-proof and dust-proof ergonomic mask of the present invention;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the mask body of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the sealing cotton of the present invention;

[0027] Figure 4 for Figure 3 Schematic diagram of the structure of AA.

[0028] In the picture: 1. Mask body; 2. Ear straps; 3. Heat insulation and fireproof layer; 4. Non-woven fabric layer; 5. Filter meltblown fabric layer; 6. Veneer silk layer; 7. Sealing cotton; 8. Fireproof cotton. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figure 1-Figure 4 As shown, this embodiment provides a heat-insulating, fire-proof and dust-proof ergonomic mask, including a mask body 1, ear straps 2 are respectively provided on both sides of the mask body 1, the mask body 1 includes a heat-insulating and fire-proof layer 3, a non-woven fabric layer 4, a filter melt-blown fabric layer 5 and a veneer silk layer 6 arranged in sequence from the outside to the inside, the heat-insulating and fire-proof layer 3 is made of a graphene / polyimide mixed material, and sealing protrusions are symmetrically provided on the mask body 1.

[0032] The mask of the present invention can achieve good heat insulation, fire protection and dust prevention effects.

[0033] To further optimize the scheme, silk, non-woven fabric and fireproof cotton 8 are arranged in the sealing protrusion. The recessed part between the mask body 1 and the bridge of the nose and cheek of the human body is formed with silk, non-woven fabric including fireproof cotton 8 to form a protrusion to fill the gap, thereby forming a good seal with the human face and playing a good dustproof role.

[0034] Further optimizing the scheme, the production of the heat insulation and fireproof layer 3 includes the following steps:

[0035] S1. Sending 1-15% of graphene / o-xylene suspension into a high-pressure homogenizer for dispersion; dispersing graphene by a high-pressure homogenizer helps to break up graphene agglomeration and improve its uniform distribution in the solution, thereby enhancing the interface bonding force between graphene and the matrix material and avoiding agglomeration leading to uneven material properties.

[0036] S2. The dispersed graphene suspension is mixed with 4,4'-diaminodiphenyl ether (4g, 0.02mol), 3,3',4,4'-triphenyl diether tetracarboxylic dianhydride (8.04g, 0.02mol) and xylene (300ml) in a certain proportion, and added into a three-necked beaker, and mechanically stirred at 170°C for 6 hours; ensuring that the graphene is uniformly embedded in the polyimide matrix, and the high temperature is conducive to the partial reaction of the precursor, providing sufficient reaction conditions for subsequent thermal curing and polymerization, thereby improving the mechanical properties and thermal stability of the composite material.

[0037] S3. The mixed liquid in S2 is filtered using a Buchner funnel, and the graphene / polyimide material is vacuum dried in a vacuum drying oven at 280° C. for 24 hours to obtain a black solid powder; the excess solvent is removed by filtration, and high-temperature drying at 280° C. can improve the thermal stability of the material and facilitate subsequent processing.

[0038] S4. Mix the vacuum-dried material in S3 with N,N-dimethylacetamide, and stir at a speed of 100-500 r / min for 5-20 minutes to obtain a black colloid; this allows the composite to be more evenly distributed, providing good fluidity and processability for subsequent molding processing.

[0039] S5. The mixed material in S4 is heated and kept warm to promote further polymerization and curing of the polyimide and ensure the final performance of the material.

[0040] Further optimization plan, the pressure of the S1 medium and high pressure homogenizer is 1500-2500mpa.

[0041] The solution is further optimized, and the temperature during mixing in S2 is between 150°C and 180°C.

[0042] To further optimize the scheme, the mixed material in S5 was heated to 350°C at a rate of 5-15°C / min and kept at this temperature for 3h.

[0043] Further optimizing the scheme, the preparation of the heat insulation and fireproof layer 3 includes the following steps:

[0044] A. Prepare the inner coating by evaporating a graphene oxide solution with a concentration of 0.1-20 mg / mL onto the surface of the clothing substrate;

[0045] B. preparing an outer coating layer by evaporating a polyamic acid colloid onto the inner coating layer prepared in step A;

[0046] C. Drying the coating: After the preparation in step B is completed, the outer coating is dried at 350° C. for 3 hours to complete the imidization of the polyamic acid and form a graphene / polyimide mixed colloid composite coating.

[0047] The scheme is further optimized. In step A, the evaporation conditions of the inner coating are to use non-vacuum evaporation at an evaporation temperature of 20-110° C. and to control the evaporation time to 0.5-3 h, so that part of the graphene oxide in the inner coating undergoes a reduction reaction to generate graphene.

[0048] The scheme is further optimized. In step B, the evaporation conditions of the outer coating are as follows: the evaporation temperature is 100-150° C., non-vacuum evaporation is used, and the evaporation time is controlled to be 0.5-3 h.

[0049] The scheme is further optimized, and the mass percentage concentration of the polyimide colloid solution in step C is 10-50wt.%.

[0050] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A heat-insulating, fire-proof and dust-proof ergonomic mask, characterized by: The invention comprises a mask body (1), wherein ear straps (2) are respectively arranged on both sides of the mask body (1), the mask body (1) comprises a heat-insulating and fire-proofing layer (3), a non-woven fabric layer (4), a filter melt-blown fabric layer (5) and a facing silk layer (6) which are arranged in sequence from the outside to the inside, the heat-insulating and fire-proofing layer (3) is made of a graphene / polyimide mixed material, and sealing protrusions are symmetrically arranged on the mask body (1).

2. The heat-insulating, fire-proof and dust-proof ergonomic mask according to claim 1, characterized in that: Silk, non-woven fabric and fireproof cotton (8) are arranged inside the sealing protrusion.

3. The heat-insulating, fire-proof and dust-proof ergonomic mask according to claim 1, characterized in that: The preparation of the heat-insulating and fire-proof layer (3) comprises the following steps: S1. Sending 1-15% graphene / o-xylene suspension into a high-pressure homogenizer for dispersion; S2, mixing the dispersed graphene suspension with 4,4'-diaminodiphenyl ether, 3,3',4,4'-triphenyl diether tetracarboxylic dianhydride and xylene in a certain proportion; S3, filtering the mixed liquid in S2 and vacuum drying; S4, mixing the vacuum-dried substance in S3 with N,N-dimethylacetamide; S5. Heating and maintaining the temperature of the substances mixed in S4.

4. The heat-insulating, fire-proof and dust-proof ergonomic mask according to claim 3 is characterized by: The pressure of the high pressure homogenizer in S1 is 1500-2500 MPa.

5. The heat-insulating, fire-proof and dust-proof ergonomic mask according to claim 3, characterized in that: The temperature during mixing in S2 is between 150°C and 180°C.

6. The heat-insulating, fire-proof and dust-proof ergonomic mask according to claim 3, characterized in that: The mixed material in S5 is heated to 350°C at a rate of 5-15°C / min and kept at this temperature for 3h.

7. The heat-insulating, fire-proof and dust-proof ergonomic mask according to claim 1, characterized in that: The preparation of the heat-insulating and fire-proof layer (3) comprises the following steps: A. Prepare the inner coating by evaporating a graphene oxide solution with a concentration of 0.1-20 mg / mL onto the surface of the clothing substrate; B. preparing an outer coating layer by evaporating a polyamic acid colloid onto the inner coating layer prepared in step A; C. Drying the coating: After the preparation in step B is completed, the outer coating is dried at 350° C. for 3 hours to complete the imidization of the polyamic acid and form a graphene / polyimide mixed colloid composite coating.

8. The heat-insulating, fire-proof and dust-proof ergonomic mask according to claim 7, characterized in that: The evaporation conditions of the inner coating in step A are as follows: non-vacuum evaporation is adopted at an evaporation temperature of 20-110° C., and the evaporation time is controlled to be 0.5-3 h.

9. The heat-insulating, fire-proof and dust-proof ergonomic mask according to claim 7, characterized in that: In step B, the evaporation conditions of the outer coating are as follows: the evaporation temperature is 100-150° C., non-vacuum evaporation is adopted, and the evaporation time is controlled to be 0.5-3 hours.

10. The heat-insulating, fire-proof and dust-proof ergonomic mask according to claim 7, characterized in that: The mass percentage concentration of the polyimide colloid solution in step C is 10-50wt.%.

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