CN117286723A - Anti-dewing coated fabric and preparation method thereof - Google Patents
Anti-dewing coated fabric and preparation method thereof Download PDFInfo
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- CN117286723A CN117286723A CN202311579117.5A CN202311579117A CN117286723A CN 117286723 A CN117286723 A CN 117286723A CN 202311579117 A CN202311579117 A CN 202311579117A CN 117286723 A CN117286723 A CN 117286723A
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- silicone emulsion
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- 239000004744 fabric Substances 0.000 title claims abstract description 73
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000002245 particle Substances 0.000 claims abstract description 158
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 88
- 239000000839 emulsion Substances 0.000 claims abstract description 65
- 238000009413 insulation Methods 0.000 claims abstract description 22
- 230000009467 reduction Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000007667 floating Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 21
- 238000001723 curing Methods 0.000 claims description 20
- 239000002121 nanofiber Substances 0.000 claims description 19
- 239000011324 bead Substances 0.000 claims description 17
- 229920002635 polyurethane Polymers 0.000 claims description 17
- 239000004814 polyurethane Substances 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 15
- 238000009826 distribution Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 230000002265 prevention Effects 0.000 claims description 8
- 238000013007 heat curing Methods 0.000 claims description 6
- 239000012774 insulation material Substances 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 abstract description 6
- 238000003860 storage Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 74
- 229920002050 silicone resin Polymers 0.000 description 33
- 238000009833 condensation Methods 0.000 description 16
- 239000011248 coating agent Substances 0.000 description 15
- 238000000576 coating method Methods 0.000 description 15
- 230000035699 permeability Effects 0.000 description 14
- 239000002904 solvent Substances 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 239000002270 dispersing agent Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 239000002562 thickening agent Substances 0.000 description 7
- 239000002518 antifoaming agent Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000005494 condensation Effects 0.000 description 5
- 238000011049 filling Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010227 cup method (microbiological evaluation) Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 210000004177 elastic tissue Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/128—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with silicon polymers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0068—Polymeric granules, particles or powder, e.g. core-shell particles, microcapsules
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/06—Properties of the materials having thermal properties
- D06N2209/065—Insulating
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/12—Permeability or impermeability properties
- D06N2209/126—Permeability to liquids, absorption
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/125—Awnings, sunblinds
Abstract
The application provides an anti-dewing fabric and a preparation method thereof, wherein the anti-dewing fabric comprises the following components: s10: the surface of the fabric body is coated with a silicone emulsion layer, a friction reducing material is embedded in the silicone emulsion layer at the bonding surface of the fabric body, a heat insulating material is suspended in the silicone emulsion layer, the friction reducing material comprises a plurality of friction reducing particles, the friction reducing particles are of hollow structures, the particle walls are of microporous structures, the heat insulating material comprises a plurality of heat insulating particles, and the particle size of the heat insulating particles is smaller than that of the friction reducing particles; s20: and floating the drag reduction particles in the silicone emulsion layer, so that a plurality of convex parts are formed on the surface of the cured silicone emulsion layer under the pushing of the plurality of heat insulation particles. The anti-dewing fabric and the preparation method thereof realize that the moisture storage performance and the moisture removal efficiency of the anti-dewing fabric are improved while the heat insulation performance of the anti-dewing fabric is guaranteed, so that the wet feeling of a user in a tent is effectively relieved, and the user experience of the tent is improved.
Description
Technical Field
The invention relates to the technical field of coated fabrics, in particular to an anti-dewing fabric and a preparation method thereof.
Background
Camping tent is a necessary equipment for camping activities, and can provide a relatively comfortable rest place for a camper. In order to avoid the condition that condensation occurs on the inner surface of the tent due to the temperature difference between the inside and the outside of the tent, tent cloth is usually provided with a condensation preventing fabric, which is a coated fabric coated with a condensation preventing coating on the surface. The existing anti-condensation coating is formed by adding a heat insulation material, and reducing the heat conduction coefficient of the coating by using the heat insulation material, so that the temperature difference between the inner side of the tent and the indoor air of the tent is small, and further, the anti-condensation is realized. However, the above conventional anti-condensation paint is not excellent in moisture permeability, although it can prevent condensation, and thus a user may feel a feeling of stuffy when moving in a tent for a long period of time.
Disclosure of Invention
In view of the above-described drawbacks or shortcomings of the prior art, it is desirable to provide an anti-dewing fabric and a method of making the same.
In a first aspect, the present application provides a method of preparing an anti-dewing fabric comprising:
s10: the surface of the fabric body is coated with a silicone emulsion layer, a friction reducing material is embedded in the silicone emulsion layer at the bonding surface of the fabric body, a heat insulating material is suspended in the silicone emulsion layer, the friction reducing material comprises a plurality of friction reducing particles, the friction reducing particles are of hollow structures, the particle walls are of microporous structures, the heat insulating material comprises a plurality of heat insulating particles, and the particle size of the heat insulating particles is smaller than that of the friction reducing particles;
s20: and floating the drag reduction particles in the silicone emulsion layer, so that a plurality of convex parts are formed on the surface of the cured silicone emulsion layer under the pushing of the plurality of heat insulation particles.
Further, the drag reducing particles are of an elastic structure and have a density smaller than that of the silicone emulsion layer, and S20 specifically includes: the silicone emulsion layer is subjected to a staged heat curing treatment wherein the drag reducing particles float up under the influence of buoyancy after thermal expansion.
Further, the stage heat curing treatment specifically includes:
performing first curing treatment on the silicone emulsion layer to dry the surface of the silicone emulsion layer;
and performing a second curing treatment on the silicone emulsion layer to cure the silicone emulsion layer.
Further, the heating temperature in the first curing process is 50 to 55 ℃ and the heating time is 1 to 2 minutes, and the heating temperature in the second curing process is 180 to 210 ℃ and the heating time is 120 to 180 minutes.
Further, a plurality of elastic nanofibers are adhered to the outer surfaces of the drag reducing particles, and part of the elastic nanofibers are arranged in a crossing manner.
Further, the elastic nanofiber is one or more of polypropylene nanofiber, polyethylene terephthalate nanofiber and polyurethane nanofiber.
Further, the drag reducing particles have a distribution density of 2-5 particles/mm over the silicone emulsion layer 2 。
Further, the thickness of the silicone emulsion layer is 0.2-0.3mm, the average particle diameter of the drag reduction particles is 30-40% of the thickness of the second silicone emulsion layer, the particle wall thickness of the drag reduction particles is not more than 10% of the particle diameter of the drag reduction particles, and the average particle diameter of the heat insulation particles is 10-30 μm.
Further, the drag reduction particles are polyurethane particles, and the heat insulation particles are hollow glass beads or hollow ceramic beads.
In a second aspect, the present application also provides a dewing prevention fabric formed by the preparation method of the dewing prevention fabric.
According to the anti-dewing fabric and the preparation method thereof, the surface of the fabric body is coated with the silicone emulsion layer, the bonding surface of the fabric body is adhered to the silicone emulsion layer, a plurality of drag reduction particles are embedded in the bonding surface of the fabric body, the drag reduction particles float up from the silicone emulsion layer and are formed with a plurality of protruding portions on the surface of the cured silicone layer, so that a plurality of scattered accelerating moisture removal channels are formed in the silicone layer, the accelerating moisture removal channels have better moisture removal capacity compared with other positions in the silicone layer, the inner cavities of the drag reduction particles can be used as moisture cache cavities, and meanwhile, the heat insulation performance of the anti-dewing fabric can be guaranteed, and therefore the moisture storage performance and the moisture removal efficiency of the anti-dewing fabric are improved while the heat insulation performance of the anti-dewing fabric is guaranteed, the user's feeling of being closed in the tent is effectively relieved, and the user experience of the tent is improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is a flowchart of a method for preparing an anti-dewing fabric according to an embodiment of the present application;
fig. 2 is a schematic view of an internal structure of a silicone layer according to an embodiment of the present application.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
The embodiment of the application provides a preparation method of a dewing-preventing fabric and the dewing-preventing fabric prepared by the preparation method. The dewing preventing fabric refers to a fabric having a dewing preventing coating on a surface thereof, wherein the dewing preventing fabric may be used as, but not limited to, tent cloth, clothing fabric, etc.
Referring to fig. 1 to 2, the preparation method of the anti-dewing fabric comprises the following steps:
s10: a silicon resin layer is coated on the surface of the fabric body 100, a resistance reducing material is embedded in the silicon resin layer at the bonding surface for bonding the fabric body 100, a heat insulation material is suspended in the silicon resin layer, the resistance reducing material comprises a plurality of resistance reducing particles 400, the resistance reducing particles 400 are hollow structures, the particle walls are of microporous structures, the heat insulation material comprises a plurality of heat insulation particles 300, and the particle size of the heat insulation particles 300 is smaller than that of the resistance reducing particles 400;
s20: the drag reducing particles 400 are floated upward in the silicone resin layer so that the surface of the cured silicone resin layer is formed with a plurality of protrusions 210 under the pushing of the plurality of heat insulating particles 300.
In this embodiment, the silicone layer is formed by coating a silicone emulsion on the surface of the fabric body 100, and the drag reducing material is embedded in the silicone layer on the bonding surface where the fabric body 100 is bonded, and the drag reducing material includes a plurality of dispersed drag reducing particles 400, and the drag reducing particles 400 are spherical or elliptic spherical, and it should be understood that the drag reducing particles 400 are embedded from the bonding surface of the silicone layer into the silicone layer. The microporous structure in the walls of drag reducing particles 400 communicates the internal cavities of drag reducing particles 400 with the microporous structure in the silicone layer, it being understood that the silicone average particle size in the silicone layer is typically configured to be 3 times or more the pore size of the microporous structure to avoid infiltration of the silicone emulsion into the microporous structure. The silicon resin layer is mixed with a heat insulating material, the heat insulating material comprises a plurality of heat insulating particles 300, and the heat insulating particles 300 are in a dispersed and suspended state in the silicon resin emulsion under the viscosity of the silicon resin emulsion. The plurality of heat insulation particles 300 are closely arranged in the silicone resin layer, and form a compact three-dimensional heat insulation network structure in the silicone resin layer, so that the heat insulation performance of the coating is improved, the temperature difference between the air inside the tent and the inner surface of the tent is reduced, and dew condensation is avoided. The silicone layer forms a silicone layer after being completely cured, the silicone layer has a microporous structure, and moisture is discharged through the microporous structure, so that the dewing prevention coating layer has moisture permeability. The moisture described herein is typically water vapor, such as that produced by the human body. The microporous structure in the silicone layer and drag reducing particles 400 is mostly tortuous through holes, and the pore size is typically below 50 nm.
In this embodiment, a plurality of rapid moisture-removing channels are formed in the silicone layer in a dispersed manner, so as to improve the moisture-removing efficiency of the local position in the silicone layer, rather than improving the moisture permeability by increasing the average void density of the anti-condensation coating, so that the overall moisture permeability of the anti-condensation fabric can be improved while the heat-insulating performance is ensured. Specifically, the first aspect adds hollow and breathable drag reducing particles 400 in the silicone layer, the drag reducing particles 400 have relatively large cavities, the drag reducing particles 400 not only can shorten the flowing distance of water vapor in the silicone layer, but also can make the movement of the water vapor smoother, the second aspect deflects the drag reducing particles 400 away from one end of the fabric body 100 through the drag reducing particles 400, so that the drag reducing particles 400 are closer to the air to be dehumidified, and the convex portions 210 formed on the surface of the silicone layer by the drag reducing particles 400 increase the contact area between the silicone layer and the air, so that the external moisture is more effectively introduced into the drag reducing particles 400 through the convex portions 210, and the third aspect also automatically fills the floating channels of the drag reducing particles 400 in the process of floating the drag reducing particles 400, and the distribution density of the heat insulating particles 300 in the filling portions 220 filled into the floating channels is smaller than that of the other portions in the filling process due to the flow hysteresis of the heat insulating particles 300, so that the micropore volume in the filling portions 220 is larger than that of the other portions in the silicone layer, so that the moisture permeability is better. Thus, the drag reducing particles 400 and the protrusions 210 and the filling portions formed by the drag reducing particles together form a fast moisture removing channel, and the fast moisture removing channel has a shorter flow distance, smaller flow resistance and more micropores than other parts of the silicone resin layer, and further has better moisture removing efficiency than other parts of the silicone resin layer. In addition, the inner cavities of drag reducing particles 400 may also form a vapor buffer chamber to partially buffer a portion of the moisture within the tent, helping to quickly reduce the amount of moisture within the tent.
It should be appreciated that, because the filling portion 220 still has a certain amount of the heat insulation particles 300, the three-dimensional heat insulation network structure is still complete, and only the local thin treatment is performed, that is, only the local heat insulation performance is affected, so that the overall heat insulation performance of the anti-condensation layer is ensured.
The silicone resin layer, the heat insulation particles 300 and the drag reduction particles 400 are all made of hydrophobic materials, so that the problems that the adhesion firmness between the anti-condensation layer and the fabric body 100 is poor due to moisture absorption expansion of the anti-condensation coating layer, the continuous discharge of water vapor is influenced after the moisture absorption expansion of the anti-condensation coating layer is avoided.
Wherein the thickness of the silicone resin layer is 0.2-0.3mm, and the average particle diameter of the drag reducing particles 400 is 30-40% of the thickness of the second silicone resin layer, the particle wall thickness of the drag reducing particles 400 is not more than 10% of the particle diameter of the drag reducing particles 400, and the average particle diameter of the heat insulating particles 300 is 10-30 μm. The drag reducing particles 400 are polyurethane particles and the heat insulating particles 300 are hollow glass beads or hollow ceramic beads.
The silicone emulsion may be coated on the fabric body 100 by roll coating. The coating roll with the silicone emulsion attached to the surface may be such that the drag reducing particles 400 are placed on the silicone emulsion on the surface of the coating roll by spraying or the like before the silicone emulsion is coated on the fabric body 100, so that the drag reducing particles 400 are automatically embedded at the bonding surface of the silicone layer after the coating roll coats the silicone emulsion on the fabric body 100.
The fabric body 100 may be, but not limited to, nylon cloth or the like.
Wherein, preferably, the drag reducing particles 400 have a distribution density of 2-5/mm over the silicone layer 2 . When the distribution density of the drag reducing particles 400 is lower than the above range, the moisture permeability improvement effect on the silicone resin layer is low, and the relief effect on the damp environment in the tent is not obvious; when the number of the drag reducing particles 400 is higher than the above range, the heat insulating performance of the silicone resin layer is greatly affected. Therefore, when the drag reducing particles 400 are within the above-described distribution density range, the heat insulating performance can be simultaneously achieved, and the moisture permeability effect can be made remarkable.
In some embodiments of the present application, the drag reducing particles 400 are of an elastic structure and the density of the drag reducing particles 400 is less than the density of the silicone layer, S20 specifically comprises: the silicone resin layer is subjected to a staged heat curing treatment, wherein the drag reducing particles 400 are made of elastic materials and have a certain air inside, the drag reducing particles 400 expand after being heated, the buoyancy of the expanded drag reducing particles 400 in the silicone resin emulsion increases, so that the drag reducing particles 400 float upwards under the action of the buoyancy, and the floating drag reducing particles 400 arch part of the surface of the silicone resin emulsion and form convex parts 210. Thus, the floating implementation mode of the drag reduction particles 400 is simple, and the floating speed of the drag reduction particles 400 is high.
Wherein, preferably, the step-type heat curing treatment specifically comprises:
the silicone layer is subjected to a first curing process to dry the silicone layer. The heating temperature in the first curing process is 50-55 ℃ and the heating time is 1-2 minutes, and the drag reducing particles 400 float up to the surface of the silicone emulsion and arch partially during the first curing process; the silicone resin layer is subjected to a second curing treatment to cure the silicone resin layer. The heating temperature in the second curing process is 180-210 ℃ and the heating time is 120-180 minutes, and the silicone emulsion is completely cured and forms a silicone layer after the second curing process. The silicon resin layer is the anti-condensation coating on the anti-condensation fabric.
Wherein the polyurethane particles expand to 1.2-1.3 times in volume during the curing treatment.
Wherein the drag reducing particles 400 have a density of 0.4-0.6g/cm and the silicone emulsion has a density of 1.0-1.2 g/cm.
In some embodiments of the present application, the outer surfaces of drag reducing particles 400 are bonded with a plurality of elastic nanofibers with portions of the elastic fibers being disposed in a cross-over relationship. The outer circumference of drag reducing particles 400 is wrapped with elastic nanofibers as described above, which can increase the voids near the outer surface of drag reducing particles 400, thereby allowing more moisture within the silicone layer to enter drag reducing particles 400.
Wherein the elastic nanofiber is one or more of polypropylene nanofiber, polyethylene terephthalate nanofiber and polyurethane nanofiber.
Wherein the elastic nanofibers may be bonded to the outer surface of the drag reducing particles 400 by attaching to the outer surface of the uncured drag reducing particles 400.
In some embodiments of the present application, the silicone emulsion comprises the following components in parts by mass: 50-60 parts of silicone resin, 30015-20 parts of heat insulation particles, 4-8 parts of dispersing agent, 3-5 parts of thickening agent, 1-3 parts of defoaming agent and 6-15 parts of solvent.
The solvent is an organic solvent, and may be toluene, methanol, ethanol, or the like.
The present application further improves the following embodiments:
comparative example 1
The silicone resin emulsion comprises the following components in parts by mass: 50 parts of silicone resin, 15 parts of hollow glass beads, 4 parts of dispersing agent, 3 parts of thickening agent, 1 part of defoaming agent and 6 parts of solvent. The thickness of the silicone emulsion was 0.2mm, and the average particle size of the hollow glass beads was 15. Mu.m.
Example 2
The silicone resin emulsion comprises the following components in parts by mass: 50 parts of silicone resin, 15 parts of hollow glass beads, 4 parts of dispersing agent, 3 parts of thickening agent, 1 part of defoaming agent and 6 parts of solvent. The thickness of the silicone emulsion was 0.2mm, and the distribution density of the polyurethane particles on the silicone layer was 3 particles/mm 2 The average particle diameter of the hollow glass beads is 15 mu m, and the average particle diameter of the polyurethane particles is 60 mu m.
Example 3
The silicone resin emulsion comprises the following components in parts by mass: 50 parts of silicone resin, 15 parts of hollow glass beads, 4 parts of dispersing agent, 3 parts of thickening agent, 1 part of defoaming agent and 6 parts of solvent. The thickness of the silicone emulsion was 0.2mm, and the distribution density of the polyurethane particles on the silicone layer was 3 particles/mm 2 The average particle diameter of the hollow glass beads is 15 μm, and the average particle diameter of the polyurethane particles is 70 μm.
Example 4
The silicone resin emulsion comprises the following components in parts by mass: 50 parts of silicone resin, 15 parts of hollow glass beads, 4 parts of dispersing agent, 3 parts of thickening agent, 1 part of defoaming agent and 6 parts of solvent. The thickness of the silicone emulsion was 0.2mm, and the distribution density of the polyurethane particles on the silicone layer was 4 pieces/mm 2 The average particle diameter of the hollow glass beads is 15 μm, and the average particle diameter of the polyurethane particles is 70 μm.
Example 5
The silicone resin emulsion comprises the following components in percentage by mass: 55 parts of silicone resin and hollow glass beads18 parts of dispersing agent 6 parts, thickener 4 parts, defoamer 2 parts and solvent 11 parts. The thickness of the silicone emulsion was 0.2mm, and the distribution density of the polyurethane particles on the silicone layer was 3 particles/mm 2 The average particle diameter of the hollow glass beads is 15 mu m, and the average particle diameter of the polyurethane particles is 80 mu m.
Example 6
The silicone resin emulsion comprises the following components in percentage by mass: 60 parts of silicone resin, 20 parts of hollow glass beads, 8 parts of dispersing agent, 5 parts of thickening agent, 3 parts of defoaming agent and 15 parts of solvent. The thickness of the silicone emulsion was 0.2mm, and the distribution density of the polyurethane particles on the silicone layer was 5 pieces/mm 2 The average particle diameter of the hollow glass beads is 15 mu m, and the average particle diameter of the polyurethane particles is 60 mu m.
The 6 examples above all used the same preparation as follows:
coating a silicone resin layer on the surface of nylon cloth with the size of 0.1m multiplied by 0.1m, and spraying a drag reduction material on the silicone resin emulsion on the surface of the coating roller;
performing a first curing treatment on the silicone resin layer, wherein the heating temperature in the first curing treatment is 50 ℃ and the heating time is 1 minute;
and (3) performing second curing treatment on the silicone resin layer, wherein the heating temperature in the second curing treatment is 200 ℃ and the heating time is 150 minutes, and obtaining the anti-dewing fabric after the second curing treatment is finished.
It should be appreciated that the preparation process described above omits the "spray drag reducing material onto silicone emulsion located on the surface of the coating roll" step for example 1.
The anti-dewing fabrics obtained in the 6 embodiments are subjected to moisture permeability test and heat conduction performance test by the same test method, wherein the moisture permeability is tested by referring to GB/T12704.1-1991 method for measuring fabric moisture permeability and moisture permeability cup method, and the heat conduction coefficient is tested by referring to GB/T10295-2008 method. The test results were as follows:
| sequence number | Moisture permeability/(m) 2 ·24h） | Thermal conductivity/(W/m.K) |
| Comparative example 1 | 7230 | 0.030 |
| Example 2 | 7927 | 0.033 |
| Example 3 | 8165 | 0.036 |
| Example 4 | 8280 | 0.037 |
| Example 5 | 7972 | 0.034 |
| Example 6 | 7950 | 0.033 |
Compared with the anti-dewing fabric prepared in the comparative example 1, the anti-dewing fabric provided by the application has slightly reduced heat conductivity coefficient, but the heat conductivity coefficient is kept at 0.03-0.04W/m.K, so that the anti-dewing fabric has good heat insulation performance, further the anti-dewing fabric has good anti-dewing effect, and meanwhile, the moisture permeability of the anti-dewing fabric provided by the application is improved by nearly 15%, further the moisture permeability of the anti-dewing fabric is remarkably improved, and further the effect of stuffy and wet brought by a tent is effectively relieved.
It is to be understood that the above references to the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are for convenience in describing the present invention and simplifying the description only, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "plurality" is two or more.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (10)
1. A method for preparing an anti-dewing fabric, comprising the steps of:
s10: a silicone emulsion layer is coated on the surface of the fabric body, a friction reducing material is embedded in the silicone emulsion layer at the bonding surface where the fabric body is bonded, a heat insulation material is suspended in the silicone emulsion layer, the friction reducing material comprises a plurality of friction reducing particles, the friction reducing particles are of hollow structures and have microporous structures on particle walls, the heat insulation material comprises a plurality of heat insulation particles, and the particle size of the heat insulation particles is smaller than that of the friction reducing particles;
s20: and floating the drag reduction particles in the silicone emulsion layer, so that a plurality of convex parts are formed on the surface of the cured silicone emulsion layer under the pushing of the plurality of heat insulation particles.
2. The method of producing a dewing prevention fabric according to claim 1, wherein the drag reducing particles are of an elastic structure and have a density less than that of the silicone emulsion layer, and the S20 specifically comprises: and performing staged heat curing treatment on the silicone emulsion layer, wherein the drag reduction particles float upwards under the action of buoyancy after being heated and expanded.
3. The method for producing an anti-dewing fabric according to claim 2, wherein the step-type heat curing treatment specifically comprises:
performing first curing treatment on the silicone emulsion layer to dry the surface of the silicone emulsion layer;
and performing a second curing treatment on the silicone emulsion layer to cure the silicone emulsion layer.
4. The method of preparing a dewing-preventing fabric as claimed in claim 3, wherein the heating temperature in the first curing process is 50-55 ℃ and the heating time is 1-2 minutes, and the heating temperature in the second curing process is 180-210 ℃ and the heating time is 120-180 minutes.
5. The method of producing a dewing resistant fabric as claimed in claim 1, wherein a plurality of elastic nanofibers are bonded to the outer surface of the drag reducing particles, and a portion of the elastic nanofibers are disposed to cross each other.
6. The method of preparing a dewing resistant fabric of claim 5, wherein the elastic nanofiber is one or more of polypropylene nanofiber, polyethylene terephthalate nanofiber and polyurethane nanofiber.
7. The method of producing a dewing-preventing fabric as claimed in claim 1, wherein the distribution density of the drag reducing particles on the silicone emulsion layer is 2 to 5 pieces/mm 2 。
8. The method of producing a dewing prevention fabric according to claim 1, wherein the thickness of the silicone emulsion layer is 0.2 to 0.3mm, and the average particle diameter of the drag reducing particles is 30 to 40% of the thickness of the second silicone emulsion layer, the particle wall thickness of the drag reducing particles is not more than 10% of the particle diameter of the drag reducing particles, and the average particle diameter of the heat insulating particles is 10 to 30 μm.
9. The method for producing a dewing-preventing fabric according to claim 1, wherein the drag reducing particles are polyurethane particles, and the heat insulating particles are hollow glass beads or hollow ceramic beads.
10. A dewing prevention fabric, characterized in that the dewing prevention fabric is formed by the preparation method of the dewing prevention fabric according to any one of claims 1 to 9.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884684A (en) * | 2005-06-20 | 2006-12-27 | 厚生股份有限公司 | Low friction high-temperature resistant composite fabric production method |
| CN112812637A (en) * | 2020-12-31 | 2021-05-18 | 苏州佳固士新材料科技有限公司 | Anti-dewing coating and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884684A (en) * | 2005-06-20 | 2006-12-27 | 厚生股份有限公司 | Low friction high-temperature resistant composite fabric production method |
| CN112812637A (en) * | 2020-12-31 | 2021-05-18 | 苏州佳固士新材料科技有限公司 | Anti-dewing coating and preparation method thereof |
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