CN116657414B - Preparation method and application of sun-proof refrigeration polyurethane emulsion - Google Patents
Preparation method and application of sun-proof refrigeration polyurethane emulsion Download PDFInfo
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- CN116657414B CN116657414B CN202310904792.4A CN202310904792A CN116657414B CN 116657414 B CN116657414 B CN 116657414B CN 202310904792 A CN202310904792 A CN 202310904792A CN 116657414 B CN116657414 B CN 116657414B
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- 229920002635 polyurethane Polymers 0.000 title claims abstract description 105
- 239000004814 polyurethane Substances 0.000 title claims abstract description 105
- 239000000839 emulsion Substances 0.000 title claims abstract description 104
- 238000005057 refrigeration Methods 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 107
- 239000011248 coating agent Substances 0.000 claims abstract description 99
- 238000000576 coating method Methods 0.000 claims abstract description 99
- 239000004744 fabric Substances 0.000 claims abstract description 62
- 239000004753 textile Substances 0.000 claims abstract description 56
- 239000000463 material Substances 0.000 claims abstract description 52
- 239000003094 microcapsule Substances 0.000 claims abstract description 40
- 238000003756 stirring Methods 0.000 claims abstract description 28
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000001035 drying Methods 0.000 claims abstract description 21
- 239000007864 aqueous solution Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011787 zinc oxide Substances 0.000 claims abstract description 13
- 238000000227 grinding Methods 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims abstract description 3
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 3
- 238000009413 insulation Methods 0.000 claims description 28
- 238000009396 hybridization Methods 0.000 claims description 22
- 239000011259 mixed solution Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 16
- 238000012360 testing method Methods 0.000 claims description 15
- 230000010355 oscillation Effects 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 17
- 238000001816 cooling Methods 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000037072 sun protection Effects 0.000 description 12
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000002994 raw material Substances 0.000 description 7
- 230000006750 UV protection Effects 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 4
- 239000002086 nanomaterial Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000005909 Kieselgur Substances 0.000 description 3
- 230000036561 sun exposure Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011858 nanopowder Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 208000035719 Maculopathy Diseases 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052789 astatine Inorganic materials 0.000 description 1
- RYXHOMYVWAEKHL-UHFFFAOYSA-N astatine atom Chemical compound [At] RYXHOMYVWAEKHL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000003700 hair damage Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 210000000987 immune system Anatomy 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 208000002780 macular degeneration Diseases 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 201000001441 melanoma Diseases 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002103 nanocoating Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 208000017520 skin disease Diseases 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/44—Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic Table; Zincates; Cadmates
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/45—Oxides or hydroxides of elements of Groups 3 or 13 of the Periodic Table; Aluminates
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
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- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
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- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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Abstract
The application relates to a preparation method and application of a sun-proof refrigeration polyurethane emulsion, and the preparation method comprises the following steps: adding microcapsule diatomite with a nano hybrid coating film on the surface into polyurethane emulsion, stirring and carrying out ultrasonic vibration to obtain sun-proof refrigeration polyurethane emulsion; the microcapsule diatomite with the nano hybrid coating on the surface is obtained by adding micron-sized diatomite into nano hybrid aqueous solution, stirring, concentrating and drying step by step, and then superfine grinding; the nanometer hybridized water solution is prepared by dispersing nanometer hybridized materials in water, wherein the nanometer hybridized materials are more than one of nanometer graphene, nanometer titanium dioxide, nanometer zinc oxide and nanometer aluminum oxide; application: the method is used for carrying out surface coating finishing on the textile fabric; the preparation method increases the sun-proof cooling function of the fabric; in the application of the application, the formula of the used sun-proof refrigeration polyurethane emulsion is an environment-friendly material, and can be applied to various after-finishing technologies to increase sun-proof cooling effects of products.
Description
Technical Field
The application belongs to the technical field of functional materials, and relates to a preparation method and application of a sun-proof refrigeration polyurethane emulsion.
Background
Proper sun exposure is beneficial to the body, but if the sun exposure is carried out for a long time, the sun exposure will cause harm to the body, such as vision deterioration, senile maculopathy, hair damage, melanoma initiation, skin diseases initiation and even damage to the immune system of the human body. Therefore, sun protection and cooling are important research subjects related to folk life and environment optimization.
Document 1 (development [ D ] university of eastern China, 2012.) provides anti-ultraviolet application of nano titanium dioxide, silicon dioxide and oxidized astatine, and a large amount of auxiliary additives are used, but the UPF value of the product prepared by the method is 40+, and the requirements of heat insulation and cooling effects are still not met.
Patent CN109423105A provides a new material of heat-dissipating and cooling nano powder, in particular to heat-dissipating and cooling nano powder which is formed by mixing small particles with different specific masses and particle diameters, wherein the main component is SiO 2 、Al 2 O 3 ZnO, mgO, etc., the method is the formulation of nano inorganic material, thereby forming the heat dissipation and cooling effects, but the material contains heavy metals which are not environment-friendly.
Therefore, the preparation method and the application of the sun-proof refrigeration polyurethane emulsion are researched to solve the problems, and the sun-proof refrigeration polyurethane emulsion has very important significance.
Disclosure of Invention
In order to solve the problems in the prior art, the application provides a preparation method and application of a sun-proof refrigeration polyurethane emulsion;
in order to achieve the above purpose, the application adopts the following scheme:
the preparation method of the polyurethane emulsion for sun protection and refrigeration comprises the steps of adding microcapsule diatomite with a nano hybrid coating on the surface into the polyurethane emulsion, stirring and carrying out ultrasonic vibration to obtain the polyurethane emulsion for sun protection and refrigeration;
the microcapsule diatomite with the nano hybrid coating on the surface is obtained by adding micron-sized diatomite into nano hybrid aqueous solution, stirring, concentrating and drying step by step (the step concentrating and drying refers to the step drying process by a heating steaming and centrifugal dewatering method), and then superfine grinding;
the nanometer hybridized water solution is prepared by dispersing nanometer hybridized materials in water, wherein the nanometer hybridized materials are more than one of nanometer graphene, nanometer titanium dioxide, nanometer zinc oxide and nanometer aluminum oxide.
As a preferable technical scheme:
the preparation method of the sun-proof refrigeration polyurethane emulsion comprises the following steps of:
(1) Dispersing the nano-hybrid material into water, and carrying out ultrasonic oscillation configuration to obtain a homogeneous nano-hybrid aqueous solution;
(2) Adding the micron-sized diatomite into the homogenized nano-hybridization aqueous solution prepared in the step (1) to obtain a mixed solution, stirring at a rotating speed of 30-300 r/min, and then drying at 120-250 ℃, wherein the liquid becomes thicker and thicker along with the increase of water loss of the dried nano-hybridization material; continuously stirring and concentrating in the drying process to form a diatomite surface nano coating layer to obtain diatomite with a nano hybrid coating on the surface;
(3) Carrying out superfine grinding on diatomite with a nano hybrid coating on the surface to obtain microcapsule diatomite with a nano hybrid coating on the surface; the grain diameter of the microcapsule diatomite with the surface provided with the nanometer hybridized coating is below 3 mu m; the superfine grinding adopts a nano grinder of the company of the State horse drying technology, the powder to be added through a feed inlet, the crushed powder is collected at a discharge outlet, and the powder obtained after passing through a 8500 mesh sieve is the microcapsule diatomite with the nano hybridization coating film below 3 mu m.
According to the preparation method of the sun-proof refrigeration polyurethane emulsion, in the step (1), the ultrasonic oscillation frequency is 25-130 KHz，The optimization can be in two steps of 80KHz or 100 KHz.
According to the preparation method of the sun-proof refrigeration polyurethane emulsion, the total concentration of the nanometer hybrid material and the micron-sized diatomite in the mixed solution in the step (2) is 25-40 wt%.
According to the preparation method of the sun-proof refrigeration polyurethane emulsion, in the step (2), the particle size of the micro-nano diatomite is 1-3 mu m.
According to the preparation method of the sun-proof refrigeration polyurethane emulsion, the mass ratio of the micro-scale diatomite to the nano hybrid material is 20-40:1-2.
The application also provides an application of the sun-proof refrigeration polyurethane emulsion prepared by the method, which is used for carrying out surface coating finishing on textile fabrics.
As a preferable technical scheme:
compared with the textile fabric which is not subjected to surface coating finishing, the textile fabric subjected to sun-proof refrigeration polyurethane emulsion finishing is subjected to LS301 heat insulation film tester test for 3 minutes, the heat insulation rate is increased by 30-80%, and the temperature is reduced by 1.5-4 ℃;
the UPF value (ultraviolet protection coefficient) of the textile fabric finished by adopting the sun-proof refrigeration polyurethane emulsion is more than 80, the textile fabric has an excellent ultraviolet shielding function, and the UPF value of the textile fabric which is not finished by surface coating is less than 30; the UPF value is used as an index for representing the ultraviolet resistance of the textile fabric, the test refers to GB/T18830-2009 standard, and the performance effect of the fabric for isolating ultraviolet rays is in a direct proportion relation with the UPF value.
The principle of the application is as follows:
the preparation method comprises the steps of performing nano hybridization coating treatment on the surface of diatomite to obtain microcapsule diatomite with a nano hybridization coating on the surface, wherein the microcapsule diatomite with the nano hybridization coating on the surface has a large specific surface area of the hybridization coating, and the microcapsule diatomite with the nano hybridization coating on the surface has a large specific surface area because the diatomite with 50-3000 nm which is originally naturally formed into holes has a large specific surface area.
The hybridized nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide are all good infrared and ultraviolet shielding and reflecting materials, the microcapsule diatomite with the nano hybridized coating film on the surface forms a coating on the surface of the textile fabric which is not subjected to surface coating finishing, so that most of sunlight energy can be reflected and blocked, meanwhile, part of the light energy is eliminated according to the extinction principle of half-wave mutual energy cancellation, and the effect of blocking and eliminating the light energy in a superposition manner is enhanced, so that the sun-proof and cooling functions of the fabric are improved.
Solar spectrum is an absorption spectrum of different wavelengths. The light source is divided into visible light and invisible light. The wavelength of visible light is 400-760 nm, and the scattered light is divided into 7 colors of red, orange, yellow, green, cyan, blue and purple, and the concentrated light is white light. Invisible light is divided into two types: the wavelength of the infrared ray is more than 760nm and is up to 5300nm; ultraviolet rays are called ultraviolet rays which are positioned outside ultraviolet rays, and the wavelength is 290-400 nm. When the nano hybrid material is adsorbed on diatomite, the aperture of the diatomite has reduced nano change, but still covers the whole half-wave section area of sunlight, 145-2650 nm area.
Advantageous effects
(1) According to the preparation method of the sun-proof refrigeration polyurethane emulsion, the nano hybrid coating forms high-efficiency shielding and reflecting coating layers with huge specific surface area on the specific surface of the original natural pore-forming diatomite with the thickness of 50-3000 nm, and part of light energy is eliminated according to the extinction principle of half-wave mutual energy cancellation, so that the effect of blocking and eliminating the light energy is enhanced, the shielding and reflecting elimination effects on sunlight rays are enhanced, and the sun-proof cooling function of the fabric is further improved;
(2) In the application of the sun-proof refrigeration polyurethane emulsion, the formula of the sun-proof refrigeration polyurethane emulsion is an environment-friendly material, and the sun-proof refrigeration polyurethane emulsion can be applied to various after-finishing technologies to increase sun-proof cooling effects of products.
Detailed Description
The application is further described below in conjunction with the detailed description. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. Furthermore, it should be understood that various changes and modifications can be made by one skilled in the art after reading the teachings of the present application, and such equivalents are intended to fall within the scope of the application as defined in the appended claims.
The test method adopted by the application is as follows:
UPF value: referring to GB/T18830-2009 standard test, the performance effect of the fabric for isolating ultraviolet is in direct proportion to the UPF value.
Heat insulating rate: the test is carried out by adopting an LS301 heat-insulating film tester, and the method of ISO 3270-1984 color paint and varnish and temperature and humidity of raw material adjustment and test is referred to.
The materials adopted by the application are as follows:
nano graphene: shanghai Qian field New Material technology Co., ltd., product number YT-Y-01-1 (20 nm black sphere);
nano titanium dioxide: darcy concentrated nanotechnology (everstate) limited, darcy concentrated 100nm anatase titanium dioxide powder;
nano zinc oxide: DXN-HQ20W darcy 50nm nano zinc oxide, available from darcy concentration nanotechnology (everstate);
nano aluminum oxide: packaging specification DCA-300N (300 nanometers) of Dongguan Dong ultra-New Material technology Co., ltd;
micron-sized diatomaceous earth: lingshu county, xuancheng mineral processing plant, product number XC-GZHB2.
Fabric: white polyester yarn with 100% of polyester fiber, 60g/m of gram weight 2 。
Polyurethane emulsions having an aqueous solids content of 50% or other polyurethane emulsions which can be used for coating.
Example 1
A preparation method of polyurethane emulsion for sun protection and refrigeration comprises the following specific steps:
(1) Preparation of raw materials:
nano hybrid material: nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide;
micron-sized diatomite with particle size of 1-3 mu m;
a polyurethane emulsion;
(2) Dispersing the 4 kinds of nano-hybrid materials in water in equal parts, and carrying out ultrasonic oscillation at the frequency of 80KHz to obtain a homogeneous nano-hybrid aqueous solution with the concentration of 1%;
(3) Adding the micron-sized diatomite into the homogenized nano-hybridization aqueous solution prepared in the step (2) to obtain a mixed solution, stirring at a rotating speed of 30 revolutions per minute, then drying at 120 ℃, and continuously stirring and concentrating in the drying process to obtain the diatomite with the nano-hybridization coating on the surface;
wherein, the mass ratio of the micro-scale diatomite to the nano hybrid material is 25:1.5; the total concentration of the nano hybrid material and the micro diatomite in the mixed solution is 20wt%;
(4) Carrying out superfine grinding on diatomite with a nano hybrid coating film on the surface to obtain microcapsule diatomite with a particle size below 3 mu m and a nano hybrid coating film on the surface;
(5) Adding microcapsule diatomite with a nano hybrid coating film on the surface into polyurethane emulsion, stirring and carrying out ultrasonic vibration to obtain sun-proof refrigeration polyurethane emulsion;
wherein the mass ratio of the microcapsule diatomite with the nano hybrid coating on the surface to the polyurethane emulsion is 10:100.
The prepared sun-proof refrigeration polyurethane emulsion is used for carrying out surface coating finishing on textile fabrics, and the thickness of a coating film is 5 mu m. Compared with the textile fabric which is not subjected to surface coating finishing, the textile fabric subjected to sun-proof refrigeration polyurethane emulsion finishing is subjected to LS301 heat insulation film tester test for 3 minutes, the heat insulation rate is increased by 60%, and the temperature is reduced by 3 ℃; the UPF value of the textile fabric finished by the sun-proof refrigeration polyurethane emulsion is 268, and the UPF value of the textile fabric without surface coating finishing is 15.
Comparative example 1
A preparation method of polyurethane emulsion is basically the same as that of the embodiment 1, except that the steps (1) - (4) are omitted, and in the step (5), the nano-hybrid material with the same mass is used for replacing microcapsule diatomite with a nano-hybrid coating on the surface, and the microcapsule diatomite is added into the polyurethane emulsion, stirred and subjected to ultrasonic oscillation to prepare the polyurethane emulsion for sun protection and refrigeration.
The prepared polyurethane emulsion is used for carrying out the same process coating finishing on the surface of the textile fabric, and the thickness of a coating film is 5 mu m. Compared with the textile fabric which is not subjected to surface coating finishing, the textile fabric subjected to polyurethane emulsion finishing is subjected to LS301 heat insulation film tester test for 3 minutes, the heat insulation rate is increased by 35%, and the temperature is reduced by 1.5 ℃; the UPF value of the textile fabric finished by adopting the sun-proof refrigeration polyurethane emulsion is 51.
Comparing example 1 with comparative example 1, it can be found that comparative example 1 has a sun-proof cooling effect, but the effect is very different from that of example 1, because the nanomaterial with the same concentration also has very good effect of isolating and reflecting light, but example 1 has a larger specific surface area for sun-proof cooling to increase the reflecting surface, and meanwhile, because the inside cavity of diatomite has very good heat insulation effect and half-wave extinction energy effect in many days.
Comparative example 2
A preparation method of polyurethane emulsion is basically the same as that of example 1, except that steps (1) - (4) are omitted, diatomite with the same mass is used for replacing microcapsule diatomite with nano hybrid coating on the surface in step (5), and the microcapsule diatomite is added into polyurethane emulsion, stirred and subjected to ultrasonic oscillation to prepare the polyurethane emulsion for sun protection and refrigeration.
The prepared polyurethane emulsion is used for carrying out surface coating finishing on textile fabrics. Compared with the textile fabric which is not subjected to surface coating finishing, the textile fabric subjected to polyurethane emulsion finishing is subjected to LS301 heat insulation film tester test for 3 minutes, the heat insulation rate is increased by 40%, and the temperature is reduced by 2 ℃; the UPF value of the textile fabric finished by the sun-proof refrigeration polyurethane emulsion is 41.
Comparing example 1 with comparative example 2, it can be found that both the nano-hybrid material and the diatomaceous earth have a low temperature and an ultraviolet resistance, because the nano-material itself used has an ultraviolet resistance and a heat insulation, but the heat insulation and the low temperature elimination of the ultraviolet effect are more remarkable when the combined effect of reflection, heat insulation and extinction superposition and enhancement is performed after the diatomaceous earth is coated.
Comparative example 3
A preparation method of polyurethane emulsion is basically the same as that of example 1, except that steps (1) - (4) are omitted, in step (5), diatomite and a mixture of nano hybrid materials are used for replacing microcapsule diatomite with a nano hybrid coating on the surface (the addition amount of the diatomite and the nano hybrid materials is the same as that of example 1), and the microcapsule diatomite is added into the polyurethane emulsion, and is stirred and subjected to ultrasonic oscillation to obtain the polyurethane emulsion for sun protection and refrigeration.
The prepared polyurethane emulsion is used for carrying out surface coating finishing on textile fabrics. Compared with the textile fabric which is not subjected to surface coating finishing, the textile fabric subjected to polyurethane emulsion finishing is subjected to LS301 heat insulation film tester test for 3 minutes, the heat insulation rate is increased by 50%, and the temperature is reduced by 2.5 ℃; the UPF value of the textile fabric finished by the polyurethane emulsion is 82.
Comparing example 1 with comparative example 3, it can be seen that comparative example 3 has good anti-uv effect but is inferior to the nano hybrid coating because the nano materials are randomly distributed in the polyurethane material, and may have a small proportion of the nano materials partially adsorbed on the surface of the diatomite but forming the reflection of the coating; the main heat insulation and cooling are also the instinctive reaction results presented in the respective materials.
Example 2
A preparation method of polyurethane emulsion for sun protection and refrigeration comprises the following specific steps:
(1) Preparation of raw materials:
nano hybrid material: nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide;
micron-sized diatomite with particle size of 1-3 mu m;
a polyurethane emulsion;
(2) Dispersing the 4 kinds of nano-hybrid materials in water in equal parts, and carrying out ultrasonic oscillation at the frequency of 100KHz to obtain a homogeneous nano-hybrid aqueous solution with the concentration of 1%;
(3) Adding the micron-sized diatomite into the homogenized nano-hybridization aqueous solution prepared in the step (2) to obtain a mixed solution, stirring at a rotating speed of 50 revolutions per minute, then drying at a temperature of 150 ℃, and continuously stirring and concentrating to obtain the diatomite with the nano-hybridization coating on the surface;
wherein, the mass ratio of the micro-scale diatomite to the nano hybrid material is 30:1.5; the total concentration of the nano hybrid material and the micro diatomite in the mixed solution is 23wt%;
(4) Carrying out superfine grinding on diatomite with a nano hybrid coating film on the surface to obtain microcapsule diatomite with a particle size below 3 mu m and a nano hybrid coating film on the surface;
(5) Adding microcapsule diatomite with a nano hybrid coating film on the surface into polyurethane emulsion, stirring and carrying out ultrasonic vibration to obtain sun-proof refrigeration polyurethane emulsion;
wherein the mass ratio of the microcapsule diatomite with the nano hybrid coating on the surface to the polyurethane emulsion is 5:100.
The prepared sun-proof refrigeration polyurethane emulsion is used for carrying out surface coating finishing on textile fabrics, and the thickness of a coating film is 5 mu m. Compared with the textile fabric which is not subjected to surface coating finishing, the textile fabric subjected to sun-proof refrigeration polyurethane emulsion finishing is subjected to LS301 heat insulation film tester test for 3 minutes, the heat insulation rate is increased by 30%, and the temperature is reduced by 1.5 ℃; the UPF value of the textile fabric finished by adopting the sun-proof refrigeration polyurethane emulsion is 80, and the UPF value of the textile fabric which is not finished by surface coating is 15.
Example 3
A preparation method of polyurethane emulsion for sun protection and refrigeration comprises the following specific steps:
(1) Preparation of raw materials:
nano hybrid material: nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide;
micron-sized diatomite with particle size of 1-3 mu m;
a polyurethane emulsion;
(2) Dispersing the 4 kinds of nano-hybrid materials in water in equal parts, and carrying out ultrasonic oscillation at the frequency of 80KHz to obtain a homogeneous nano-hybrid aqueous solution with the concentration of 1.5%;
(3) Adding the micron-sized diatomite into the homogenized nano-hybridization aqueous solution prepared in the step (2) to obtain a mixed solution, stirring at a rotating speed of 100 revolutions per minute, then drying at 180 ℃, and continuously stirring and concentrating in the drying process to obtain the diatomite with the nano-hybridization coating on the surface;
wherein, the mass ratio of the micro-scale diatomite to the nano hybrid material is 30:1.5; the total concentration of the nano hybrid material and the micro diatomite in the mixed solution is 24wt%;
(4) Carrying out superfine grinding on diatomite with a nano hybrid coating film on the surface to obtain microcapsule diatomite with a particle size below 3 mu m and a nano hybrid coating film on the surface;
(5) Adding microcapsule diatomite with a nano hybrid coating film on the surface into polyurethane emulsion, stirring and carrying out ultrasonic vibration to obtain sun-proof refrigeration polyurethane emulsion;
wherein the mass ratio of the microcapsule diatomite with the nano hybrid coating on the surface to the polyurethane emulsion is 12:100.
The prepared sun-proof refrigeration polyurethane emulsion is used for carrying out surface coating finishing on textile fabrics, and the thickness of a coating film is 5 mu m. Compared with the textile fabric which is not subjected to surface coating finishing, the textile fabric subjected to sun-proof refrigeration polyurethane emulsion finishing is subjected to LS301 heat insulation film tester test for 3 minutes, the heat insulation rate is increased by 60%, and the temperature is reduced by 3 ℃; the UPF value of the textile fabric finished by adopting the sun-proof refrigeration polyurethane emulsion is 275, and the UPF value of the textile fabric which is not finished by surface coating is 15.
Example 4
A preparation method of polyurethane emulsion for sun protection and refrigeration comprises the following specific steps:
(1) Preparation of raw materials:
nano hybrid material: nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide;
micron-sized diatomite with particle size of 1-3 mu m;
a polyurethane emulsion;
(2) Dispersing the 4 kinds of nano-hybrid materials in water in equal parts, and carrying out ultrasonic oscillation at the frequency of 100KHz to obtain a homogeneous nano-hybrid aqueous solution with the concentration of 1.5%;
(3) Adding the micron-sized diatomite into the homogenized nano-hybridization aqueous solution prepared in the step (2) to obtain a mixed solution, stirring at a rotating speed of 200 revolutions per minute, then drying at 200 ℃, and continuously stirring and concentrating in the drying process to obtain the diatomite with the nano-hybridization coating on the surface;
wherein, the mass ratio of the micro-scale diatomite to the nano hybrid material is 35:2; the total concentration of the nano hybrid material and the micro diatomite in the mixed solution is 26.5wt%;
(4) Carrying out superfine grinding on diatomite with a nano hybrid coating film on the surface to obtain microcapsule diatomite with a particle size below 3 mu m and a nano hybrid coating film on the surface;
(5) Adding microcapsule diatomite with a nano hybrid coating film on the surface into polyurethane emulsion, stirring and carrying out ultrasonic vibration to obtain sun-proof refrigeration polyurethane emulsion;
wherein the mass ratio of the microcapsule diatomite with the nano hybrid coating on the surface to the polyurethane emulsion is 15:100.
The prepared sun-proof refrigeration polyurethane emulsion is used for carrying out surface coating finishing on textile fabrics, and the thickness of a coating film is 5 mu m. Compared with the textile fabric which is not subjected to surface coating finishing, the textile fabric subjected to sun-proof refrigeration polyurethane emulsion finishing is subjected to LS301 heat insulation film tester test for 3 minutes, the heat insulation rate is increased by 65%, and the temperature is reduced by 3.5 ℃; the UPF value of the textile fabric finished by the sun-proof refrigeration polyurethane emulsion is 410, and the UPF value of the textile fabric without surface coating finishing is 15.
Example 5
A preparation method of polyurethane emulsion for sun protection and refrigeration comprises the following specific steps:
(1) Preparation of raw materials:
nano hybrid material: nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide;
micron-sized diatomite with particle size of 1-3 mu m;
a polyurethane emulsion;
(2) Dispersing the 4 kinds of nano-hybrid materials in water in equal parts, and carrying out ultrasonic oscillation at the frequency of 25KHz to obtain a homogeneous nano-hybrid aqueous solution with the concentration of 2%;
(3) Adding the micron-sized diatomite into the homogenized nano-hybridization aqueous solution prepared in the step (2) to obtain a mixed solution, stirring at a rotating speed of 250 revolutions per minute, then drying at 230 ℃, and continuously stirring and concentrating in the drying process to obtain the diatomite with the nano-hybridization coating on the surface;
wherein, the mass ratio of the micro-scale diatomite to the nano hybrid material is 25:1.5; the total concentration of the nano hybrid material and the micro diatomite in the mixed solution is 20wt%;
(4) Carrying out superfine grinding on diatomite with a nano hybrid coating film on the surface to obtain microcapsule diatomite with a particle size below 3 mu m and a nano hybrid coating film on the surface;
(5) Adding microcapsule diatomite with a nano hybrid coating film on the surface into polyurethane emulsion, stirring and carrying out ultrasonic vibration to obtain sun-proof refrigeration polyurethane emulsion;
wherein the mass ratio of the microcapsule diatomite with the nano hybrid coating on the surface to the polyurethane emulsion is 20:100.
The prepared sun-proof refrigeration polyurethane emulsion is used for carrying out surface coating finishing on textile fabrics, and the thickness of a coating film is 5 mu m. Compared with the textile fabric which is not subjected to surface coating finishing, the textile fabric subjected to sun-proof refrigeration polyurethane emulsion finishing is subjected to LS301 heat insulation film tester test for 3 minutes, the heat insulation rate is increased by 70%, and the temperature is reduced by 3.5 ℃; the UPF value of the textile fabric finished by the sun-proof refrigeration polyurethane emulsion is 760, and the UPF value of the textile fabric without surface coating finishing is 15.
Example 6
A preparation method of polyurethane emulsion for sun protection and refrigeration comprises the following specific steps:
(1) Preparation of raw materials:
nano hybrid material: nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide;
micron-sized diatomite with particle size of 1-3 mu m;
a polyurethane emulsion;
(2) Dispersing the 4 kinds of nano-hybrid materials in water in equal parts, and carrying out ultrasonic oscillation at the frequency of 130KHz to obtain a homogeneous nano-hybrid aqueous solution with the concentration of 2%;
(3) Adding the micron-sized diatomite into the homogenized nano-hybridization aqueous solution prepared in the step (2) to obtain a mixed solution, stirring at a rotating speed of 300 r/min, then drying at 250 ℃, and continuously stirring and concentrating in the drying process to obtain the diatomite with the nano-hybridization coating on the surface;
wherein, the mass ratio of the micro-scale diatomite to the nano hybrid material is 30:1.2; the total concentration of the nano hybrid material and the micro diatomite in the mixed solution is 24wt%;
(4) Carrying out superfine grinding on diatomite with a nano hybrid coating film on the surface to obtain microcapsule diatomite with a particle size below 3 mu m and a nano hybrid coating film on the surface;
(5) Adding microcapsule diatomite with a nano hybrid coating film on the surface into polyurethane emulsion, stirring and carrying out ultrasonic vibration to obtain sun-proof refrigeration polyurethane emulsion;
wherein the mass ratio of the microcapsule diatomite with the nano hybrid coating on the surface to the polyurethane emulsion is 25:100.
The prepared sun-proof refrigeration polyurethane emulsion is used for carrying out surface coating finishing on textile fabrics, and the thickness of a coating film is 5 mu m. Compared with the textile fabric which is not subjected to surface coating finishing, the textile fabric subjected to sun-proof refrigeration polyurethane emulsion finishing is subjected to LS301 heat insulation film tester test for 3 minutes, the heat insulation rate is increased by 80%, and the temperature is reduced by 4 ℃; the UPF value of the textile fabric finished by the sun-proof refrigeration polyurethane emulsion is 1110, and the UPF value of the textile fabric without surface coating finishing is 15.
Claims (7)
1. A preparation method of a sun-proof refrigeration polyurethane emulsion is characterized by comprising the following steps: adding microcapsule diatomite with a nano hybrid coating film on the surface into polyurethane emulsion, stirring and carrying out ultrasonic vibration to obtain sun-proof refrigeration polyurethane emulsion;
the microcapsule diatomite with the nano hybrid coating on the surface is obtained by adding micron-sized diatomite into nano hybrid aqueous solution, stirring, concentrating and drying step by step, and then superfine grinding;
the nanometer hybridized water solution is prepared by dispersing nanometer hybridized materials in water, wherein the nanometer hybridized materials are nanometer graphene, nanometer titanium dioxide, nanometer zinc oxide and nanometer aluminum oxide;
compared with the textile fabric which is not subjected to surface coating finishing, the textile fabric subjected to sun-proof refrigeration polyurethane emulsion finishing is subjected to LS301 heat insulation film tester test for 3 minutes, the heat insulation rate is increased by 30-80%, and the temperature is reduced by 1.5-4 ℃;
the UPF value of the textile fabric finished by adopting the sun-proof refrigeration polyurethane emulsion is above 80, and the UPF value of the textile fabric which is not finished by surface coating is below 30.
2. The preparation method of the sun-proof refrigeration polyurethane emulsion as claimed in claim 1, wherein the preparation method of the microcapsule diatomite with the nano hybrid coating on the surface comprises the following steps:
(1) Dispersing the nano-hybrid material into water, and carrying out ultrasonic oscillation configuration to obtain a homogeneous nano-hybrid aqueous solution;
(2) Adding the micron-sized diatomite into the homogenized nano-hybridization aqueous solution prepared in the step (1) to obtain a mixed solution, stirring at a rotating speed of 30-300 r/min, then drying at 120-250 ℃, and continuously stirring and concentrating in the drying process to obtain the diatomite with the nano-hybridization coating on the surface;
(3) Carrying out superfine grinding on diatomite with a nano hybrid coating on the surface to obtain microcapsule diatomite with a nano hybrid coating on the surface; the grain diameter of the microcapsule diatomite with the surface having the nanometer hybridized coating is below 3 mu m.
3. The method for preparing the sun-proof refrigeration polyurethane emulsion according to claim 2, wherein the ultrasonic oscillation frequency in the step (1) is25~130kHz。
4. The preparation method of the sun-proof refrigeration polyurethane emulsion according to claim 2, wherein the total concentration of the nanometer hybrid material and the micrometer diatomite in the mixed solution in the step (2) is 20-40 wt%.
5. The method for preparing the sun-proof refrigeration polyurethane emulsion according to claim 2, wherein the particle size of the micron-sized diatomite in the step (2) is 1-3 μm.
6. The preparation method of the sun-proof refrigeration polyurethane emulsion according to claim 2, wherein the mass ratio of the micro-scale diatomite to the nano hybrid material is 20-40:1-2.
7. The use of the sun-proof refrigeration polyurethane emulsion prepared by the method according to any one of claims 1 to 6, which is characterized in that: the method is used for carrying out surface coating finishing on the textile fabric.
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