Dark color cooling nylon fabric and preparation method thereof

Abstract

The embodiment of the invention relates to the technical field of textile, and discloses a dark color cooling nylon fabric which comprises a nylon fabric base cloth layer, a near-infrared reflecting layer and an infrared perspective color layer, the infrared perspective color layer, the near-infrared reflecting layer and the nylon fabric base cloth layer are sequentially overlapped, and the infrared perspective color layer comprises mixed pigment and soft transparent resin. When sunlight directly irradiates the surface of the fabric, the fabric can present a specific color, the sunlight can penetrate through the infrared perspective color layer to reach the near-infrared reflection layer, and then near-infrared light in the sunlight is reflected through the reflection effect of the near-infrared reflection layer, so that the temperature rise caused by the fact that the fabric absorbs near-infrared radiation is avoided. Therefore, compared with the existing fabric, the fabric provided by the invention has the advantages that by adopting the combination of the infrared perspective color layer and the near-infrared reflection function substrate material, the fabric not only has visible light selective absorption to present a specific color, but also has a relatively high near-infrared reflection ratio, and can achieve the functions of efficient heat insulation and cooling.

Description

Technical Field

[0001] The present application relates to the field of textile technology, and in particular to a dark-colored cooling nylon fabric and a preparation method thereof. Background Art

[0002] In outdoor environments, the radiation of sunlight is strong, of which the visible light region (400nm~700nm) and the near-infrared light region (700nm~2500nm) together constitute the main part of the solar irradiance, accounting for up to 95% (about 1000W / m 2 ), and the near-infrared light between 760nm and 1100nm is particularly significant, which is the main source of near-infrared radiation received by the earth. Such spectral characteristics cause the shielding of objects or human surfaces, such as fabrics, to easily accumulate heat, thereby increasing the surface temperature and posing a threat to the physical and mental health of outdoor personnel.

[0003] Summer textiles on the market, such as nylon fabrics, are mostly woven with light-colored fibers, or doped with high-refractive-index micro-nanoparticles in the fibers, or coated with white or light-colored heat-reflective coatings on the surface of the fabric to improve the reflectivity of the solar spectrum. For example, the method of coating TiO2 reflective insulation slurry can effectively suppress the increase in the surface temperature of the fabric and achieve the effect of heat insulation and cooling. However, these single-color radiation cooling fabrics are difficult to meet people's aesthetic needs for clothing. Therefore, it is particularly important to develop personalized, bright-colored dark cooling summer clothing fabrics. However, the dye molecules contained in common color pigments absorb light wave energy of a specific frequency. For example, carbon black pigments absorb almost all visible light and near-infrared light in the solar spectrum, converting them into heat energy, causing the surface temperature of the material to rise rapidly, and thus do not have the ability to heat insulation and cooling. Therefore, how to achieve its efficient heat insulation and cooling effect while maintaining the color of colored cooling fabrics is a technical problem that needs to be solved urgently. Summary of the invention

[0004] In order to solve the above problems, the present application provides a dark-colored cooling nylon fabric and a preparation method thereof.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A dark-colored cooling nylon fabric, comprising: a nylon fabric base fabric layer, a near-infrared reflection layer and an infrared perspective color layer;

[0007] The infrared perspective color layer, the near infrared reflection layer and the nylon fabric base cloth layer are overlapped in sequence, and the infrared perspective color layer comprises mixed pigments and soft transparent resin.

[0008] In some embodiments, the near-infrared reflective layer is configured as a porous membrane layer, and the porous membrane layer includes a nylon polymer porous membrane layer or a polyurethane polymer porous membrane layer.

[0009] In some embodiments, the near-infrared reflective layer is configured as a film layer doped with heat reflective particles, and the film layer doped with heat reflective particles includes a porous film layer formed by nylon polymer mixed with heat reflective particles or a porous film layer formed by polyurethane polymer mixed with heat reflective particles.

[0010] In some embodiments, the nylon fabric base fabric layer is configured as full-dull nylon fabric, and the full-dull nylon fabric is spun from full-dull nylon fibers doped with heat-reflective particles.

[0011] In some embodiments, it is characterized in that the heat reflective particles are set to be a mixture of one or more particles of TiO2, Cr2O3, BaSO4, SiO2 or ZnO.

[0012] In some embodiments, a surface transparent heat-insulating layer is further included, and the surface transparent heat-insulating layer is connected to a side of the infrared perspective color layer facing away from the near-infrared reflective layer.

[0013] In some embodiments, the surface transparent heat-insulating layer is set as an acrylic resin coating, and the acrylic resin coating includes a mixture of one or more soft and hard components of polymethyl methacrylate, polymethyl acrylate, polybutyl acrylate, and polydipentaerythritol hexaacrylate.

[0014] In some embodiments, the soft transparent resin is one or a mixture of polyurethane resin, acrylic resin, and epoxy resin.

[0015] In some embodiments, the pigment comprises a heterocyclic pigment.

[0016] A method for preparing a dark-colored cooling nylon fabric as described in any of the above embodiments comprises the following steps:

[0017] The nylon fabric base fabric layer is sequentially subjected to alcohol cleaning, drying, deionized water cleaning and water squeezing treatment;

[0018] Covering the treated nylon fabric base fabric layer with a near infrared reflective layer, and then performing a drying operation, and taking it out to cool naturally after the drying is completed;

[0019] The infrared perspective color layer is coated on the side of the near infrared reflection layer away from the nylon fabric base fabric layer, and then a drying operation is performed. After the drying is completed, the product is taken out and naturally cooled to obtain a product.

[0020] Based on the above technical solutions, the present invention has the following technical effects:

[0021] The dark-colored cooling nylon fabric provided by the present invention, when sunlight directly hits the surface of the fabric, because the infrared perspective color layer includes a soft transparent resin and an infrared perspective pigment, at this time, the fabric can present a specific color, and the sunlight can pass through the infrared perspective color layer to reach the near-infrared reflection layer, and then through the reflection effect of the near-infrared reflection layer, the near-infrared light in the sunlight is reflected, thereby avoiding the temperature rise of the fabric caused by absorbing near-infrared radiation. Therefore, compared with the existing fabrics, the fabric of the present application, by adopting an infrared perspective color layer and a combination of a near-infrared reflection functional base material, has both the ability to selectively absorb visible light to present a specific color and a high near-infrared reflectance ratio, and can achieve the function of efficient heat insulation and cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic cross-sectional structure diagram of a dark-colored cooling nylon fabric according to an embodiment of the present application;

[0023] Figure 2 This is a schematic flow chart of a method for preparing a dark-colored cooling nylon fabric according to an embodiment of the present application;

[0024] Figure 3 The UV-Vis-NIR reflectivity curves of Example 1 and Comparative Examples 1 to 3 of the present application.

[0025] 10. Dark-colored cooling nylon fabric; 100. Nylon fabric base layer; 200. Near-infrared reflective layer; 300. Infrared transparent color layer; 400. Surface transparent heat-insulating layer. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below in conjunction with specific embodiments. The present invention provides preferred embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0027] Before further describing various embodiments of the compounds / compositions and methods of the present disclosure in more detail through exemplary descriptions, examples and results, it should be understood that the embodiments of the present disclosure are not limited to the details of the methods and compositions described in the following description in application. The description provided herein is for illustrative purposes only and is not to be interpreted in a limiting sense. The inventive concepts of the present disclosure can have other embodiments or can be practiced or implemented in various ways. Therefore, the language used herein is intended to give the broadest scope and meaning; and the embodiments are intended to be exemplary, not exhaustive, and are not intended to limit the present disclosure to these specific embodiments. Moreover, it should be understood that the wording and terminology used herein are for the purpose of description and should not be considered restrictive unless otherwise stated. In addition, in the following detailed description, many specific details are listed in order to provide a more thorough understanding of the present disclosure.

[0028] However, it is obvious to those skilled in the art that the embodiments of the present disclosure can be practiced without these specific details. In other cases, features known to those skilled in the art are not described in detail to avoid unnecessary complex descriptions. It is intended that all substitutions, replacements, modifications and equivalents obvious to those skilled in the art are included within the scope of the present disclosure. According to the present disclosure, all compounds / compositions disclosed herein and their preparation methods, applications and uses can be prepared and implemented without undue experimentation.

[0029] Thus, although the compounds / compositions and methods of the present disclosure have been described according to specific embodiments, it will be apparent to those skilled in the art that changes may be made to the formulations, compounds or compositions and / or methods, as well as the steps or order of steps of the methods described herein, without departing from the spirit and scope of the inventive concepts of the present disclosure.

[0030] As used herein, any reference to "one embodiment" or "an embodiment" means that a particular element, feature, structure, or characteristic described in conjunction with the implementation is included in at least one embodiment. The phrase "in one embodiment" appearing in multiple places in the specification does not necessarily refer to the same embodiment.

[0031] Unless otherwise defined herein, scientific and technical terms used in conjunction with the present disclosure shall have the meanings commonly understood by those of ordinary skill in the art. In addition, unless otherwise required by context, singular terms shall include pluralities and plural terms shall include the singular.

[0032] like Figure 1As shown, the present application provides a dark-colored cooling nylon fabric 10, comprising: a nylon fabric base fabric layer 100, a near-infrared reflection layer 200 and an infrared perspective color layer 300; the infrared perspective color layer 300, the near-infrared reflection layer 200 and the nylon fabric base fabric layer 100 are overlapped in sequence, and the infrared perspective color layer 300 comprises a mixed pigment and a soft transparent resin.

[0033] Specifically, the nylon fabric base fabric layer 100, the near infrared reflection layer 200 and the infrared perspective color layer 300 are overlapped from the inside to the outside, so that the near infrared reflection layer 200 is coated on the nylon fabric base fabric layer 100, and the infrared perspective color layer 300 is coated on the near infrared reflection layer 200. The nylon fabric base fabric layer 100 is arranged on the inside, and the infrared perspective color layer 300 is arranged on the outside.

[0034] In this way, when sunlight directly hits the surface of the fabric, because the infrared perspective color layer 300 includes soft transparent resin and pigment, the fabric can present a specific color at this time, and the sunlight can pass through the infrared perspective color layer 300 to reach the near-infrared reflection layer 200, and then reflect the near-infrared light in the sunlight through the reflection effect of the near-infrared reflection layer 200, thereby avoiding the temperature rise of the fabric caused by absorbing near-infrared radiation. Therefore, compared with the existing fabrics, the fabric of the present application has the combination of the infrared perspective color layer and the near-infrared reflection functional base material, which not only has the selective absorption of visible light to present a specific color, but also has a higher near-infrared reflectance ratio, and can achieve the function of efficient heat insulation and cooling.

[0035] In order to facilitate the use of the near-infrared reflective layer 200, in some embodiments, the near-infrared reflective layer 200 is configured as a porous membrane layer, and the porous membrane layer includes a nylon polymer porous membrane layer or a polyurethane polymer porous membrane layer.

[0036] Specifically, the porous membrane layer has a specific pore size and porosity. These structural characteristics make the membrane layer have a certain scattering and reflection effect on near-infrared light. In addition, it also has a high surface area and porosity, which provides more reflection interfaces. Thereby, the effect of reflecting near-infrared light can be achieved. Among them, the selection of the porous membrane layer is not limited here, and it is subject to actual production needs. For example, the porous membrane layer is set as a nylon polymer porous membrane layer; for another example, the porous membrane layer is set as a polyurethane polymer porous membrane layer;

[0037] In some embodiments, the near-infrared reflective layer 200 is configured as a film layer doped with heat reflective particles, and the film layer doped with heat reflective particles includes a porous film layer formed by nylon polymer mixed with heat reflective particles or a porous film layer formed by polyurethane polymer mixed with heat reflective particles.

[0038] Specifically, the heat reflective particles have high reflectivity. The selection of the film layer doped with the heat reflective particles is not limited here, and is subject to actual production requirements. For example, the film layer doped with the heat reflective particles is a porous film layer formed by mixing nylon polymer with heat reflective particles; for another example, the film layer doped with the heat reflective particles is a porous film layer formed by mixing polyurethane polymer with heat reflective particles.

[0039] Wherein, the porous film layer can be formed on the surface of the nylon fabric base fabric layer by a phase separation method, and the phase separation method is one of a non-solvent phase separation method, a dual solvent phase separation method, and a thermally induced phase separation method, preferably a non-solvent phase separation method. It is understandable that the porous film formed by the phase separation method on the surface of the fabric base fabric has a hierarchical porous structure and a wide pore size distribution, and has a higher solar spectrum near-infrared reflection performance, so that when the sunlight reaches the porous film layer, the near-infrared light can be reflected by the porous structure on the porous film layer to achieve a reflection effect. And when the porous film layer is also doped with heat-reflecting particles, not only can the near-infrared light incident by the porous structure be reflected, but also the near-infrared light can be reflected by the heat-reflecting particles in the film layer, and after the reflection effects of the two are superimposed on each other, a more excellent reflection effect can be produced.

[0040] In order to further produce the heat insulation and cooling effect, in some embodiments, the nylon fabric base fabric layer 100 is set to be a full-dull nylon fabric, and the full-dull nylon fabric is spun from full-dull nylon fibers doped with heat-reflective particles.

[0041] Specifically, by adding heat-reflecting particles into the nylon fabric base fabric layer 100, when the unreflected sunlight passes through the near-infrared reflecting layer 200 and reaches the nylon fabric base fabric layer 100, the near-infrared light can also be reflected by the heat-reflecting particles doped in the nylon fabric base fabric layer 100, thereby further avoiding the fabric from absorbing radiant heat, so as to further achieve the effect of heat insulation and cooling.

[0042] In order to achieve a better heat insulation and cooling effect, in some embodiments, the thickness of the near-infrared reflective layer can be set to be equal to or less than 0.15 mm.

[0043] Specifically, the thickness of the near-infrared reflective layer can be set to 0.1 mm. By setting the thickness of the near-infrared reflective layer 200 to be relatively thin, and setting the nylon fabric base layer 100 to be a full-dull nylon fabric doped with heat-reflective particles, the nylon fabric base layer 100 can further reflect the heat rays transmitted by the near-infrared reflective layer 200, so that the fabric as a whole has a higher near-infrared reflectivity.

[0044] In order to facilitate the use of heat-reflective particles, in some embodiments, the heat-reflective particles are configured as a mixture of one or more particles of TiO2, Cr2O3, BaSO4, SiO2 or ZnO.

[0045] Specifically, the heat reflective particles are set as needed, and the specific selection is not limited here. For example, the heat reflective particles are set to TiO2; for another example, the heat reflective particles are set to Cr2O3; for another example, the heat reflective particles are set to BaSO4; for another example, the heat reflective particles are set to SiO2; for another example, the heat reflective particles are set to ZnO; for another example, the heat reflective particles are set to a mixture of TiO2 and Cr2O3.

[0046] In order to achieve a better heat insulation and cooling effect, in some embodiments, the dark-colored cooling nylon fabric 10 further includes a surface transparent heat insulation layer 400 , and the surface transparent heat insulation layer 400 is connected to a side of the infrared transparent color layer 300 facing away from the near-infrared reflection layer 200 .

[0047] Specifically, the outer side of the infrared perspective color layer 300 is coated with a surface transparent heat-insulating layer 400. Through the setting of the surface transparent heat-insulating layer 400, the temperature of the surface layer of the fabric can be further reduced through its heat-insulating effect, so that the fabric has a lower hand temperature. Because it is made of transparent material, the infrared perspective color layer 300 can be revealed, and sunlight can pass through the surface transparent heat-insulating layer 400 to reach the near-infrared reflective layer 200, making the fabric more suitable for summer sun-proof and heat-insulating clothing.

[0048] To facilitate the use of the surface transparent heat-insulating layer 400, in some embodiments, the surface transparent heat-insulating layer 400 is set as an acrylic resin coating, and the acrylic resin coating includes a mixture of one or more soft and hard components of polymethyl methacrylate, polymethyl acrylate, polybutyl acrylate, and polydipentaerythritol hexaacrylate.

[0049] Specifically, the surface transparent heat-insulating layer 400 has a certain heat-insulating effect, so that the temperature of the fabric can be effectively reduced. The specific selection of the surface transparent heat-insulating layer 400 is set as needed and is not limited here. For example, the acrylic resin coating is set to polymethyl methacrylate; for another example, the acrylic resin coating is set to polymethyl acrylate; for another example, the acrylic resin coating is set to polybutyl acrylate; for another example, the acrylic resin coating is set to polydipentaerythritol hexaacrylate; for another example, the acrylic resin coating is set to a mixture of polymethyl methacrylate and polymethyl acrylate.

[0050] In order to facilitate the formation of the infrared transparent color layer 300, in some embodiments, the soft transparent resin is set to be one of polyurethane resin, acrylic resin, epoxy resin or a mixture of several of them.

[0051] Specifically, sunlight can pass through the soft transparent resin to reach the near-infrared reflective layer 200, and the specific selection of the soft transparent resin is subject to actual production requirements and is not limited here. For example, the soft transparent resin is set as polyurethane resin; for another example, the soft transparent resin is set as acrylic resin; for another example, the soft transparent resin is set as epoxy resin; for another example, the soft transparent resin is set as a mixture of polyurethane resin and acrylic resin.

[0052] To facilitate the formation of the infrared-transmitting color layer 300 , in some embodiments, the pigment includes a heterocyclic pigment.

[0053] Specifically, the specific setting of the pigment is set according to actual production requirements and is not limited here. For example, the pigment is set as a heterocyclic pigment. For another example, the pigment is a mixture of a heterocyclic pigment and other color mixing pastes.

[0054] The heterocyclic pigments include perylene pigments, isoindolinone pigments or quinacridone pigments, or a mixture of several of them.

[0055] It is to be understood that the pigment can be applied by dry coating or wet coating.

[0056] A method for preparing a dark-colored cooling nylon fabric is provided, and the specific steps are as follows:

[0057] Step S1, sequentially performing alcohol cleaning, drying, deionized water cleaning and water squeezing treatment on the nylon fabric base fabric layer.

[0058] Specifically, the nylon fabric base fabric layer is disinfected and cleaned with alcohol, and then dried to remove residual alcohol and then cleaned with deionized water to obtain a clean nylon fabric base fabric layer, and finally squeezed to remove excess water to facilitate the next coating process.

[0059] The full-dull nylon fabric is spun from full-dull nylon fibers doped with heat-reflective particles, and the heat-reflective particles are preferably TiO2 particles, and the median particle size of the TiO2 particles is between 0.1 μm and 5 μm, preferably 1 μm.

[0060] Step S2, covering the treated nylon fabric base fabric layer with a near infrared reflective layer, and then performing a drying operation, and taking it out to cool naturally after the drying is completed.

[0061] Specifically, an infrared reflection layer is attached to the nylon fabric base fabric layer, which is then dried and naturally cooled after drying, so that the infrared reflection layer is firmly connected to the nylon fabric base fabric layer.

[0062] Among them, the near-infrared reflective layer is preferably a porous membrane layer of a polyurethane polymer or a porous membrane layer formed by a mixture of a polyurethane polymer and heat-reflective particles; and the porous membrane layer is formed on the surface of a nylon fabric base cloth by a phase separation method, and the phase separation method is one of a non-solvent phase separation method, a double solvent phase separation method, and a thermally induced phase separation method, and is preferably a non-solvent phase separation method.

[0063] Step S3, covering the infrared perspective color layer on the side of the near infrared reflection layer away from the nylon fabric base fabric layer, and then performing a drying operation, and taking it out to cool naturally after the drying is completed.

[0064] Specifically, the infrared perspective color layer is attached to the outer side of the near infrared reflection layer, and is dried and shaped, so that the infrared perspective color layer can be fixed on the side of the near infrared reflection layer away from the nylon fabric base cloth layer.

[0065] Among them, the infrared transparent color layer is set as a soft transparent resin slurry layer; the soft resin slurry layer includes pigment and soft transparent resin, the soft transparent resin is preferably polyurethane resin or acrylic resin; the pigment is preferably perylene pigment; the coating method can be dry coating or wet coating.

[0066] Step S4, covering the side of the infrared transparent color layer away from the near infrared reflective layer with a transparent heat insulation layer, and then performing a drying operation. After the drying is completed, the product is taken out and cooled naturally to obtain a product.

[0067] Specifically, the transparent heat insulation layer enables better heat insulation and cooling effects.

[0068] Example 1

[0069] The dark-colored heat-insulating and cooling nylon coated fabric in this embodiment is specifically prepared in the following steps:

[0070] (1) Select a full matte nylon fabric base fabric doped with TiO2 particles, with a specification of 1 / 3 right-slant and a thickness of 0.11 mm; wash the base fabric with alcohol and dry it, then wash it with deionized water, squeeze it twice, and the squeezing rate is 40%;

[0071] (2) 100 parts of a polyurethane resin (brand 1030F) with a solid content of 30% and 10 parts of titanium dioxide with a main particle size of 0.1 μm to 0.3 μm are selected and poured into a mixture of DMF (10 parts) and butanone (10 parts); the degassed polyurethane resin and titanium dioxide mixed solution is scraped onto the base fabric prepared in step (1) with a coating thickness of 0.10 mm, and finally the mixture is placed in an oven at 105° C. and baked for 10 min, then taken out and cooled naturally.

[0072] (3) adding 5 parts of perylene black pigment, 100 parts of polyurethane resin, 80 parts of DMF and 10 parts of butanone into a beaker and stirring at a speed of 2000 r / min for 30 min, and obtaining a black slurry after degassing; applying the slurry on the surface of the fabric polyurethane coating prepared in step (2) with a coating thickness of 0.15 mm, and then baking in an oven at 105° C. for 10 min, taking out and cooling naturally;

[0073] (4) Add 30 parts of polymethyl methacrylate, 3 parts of curing agent, and 70 parts of DMF into a beaker and stir at a speed of 2000 r / min for 30 minutes to obtain a transparent slurry after degassing; apply the transparent slurry on the surface of the color coating prepared in step (3) with a coating thickness of 0.15 mm, and then bake in an oven at 90° C. for 20 minutes and cool naturally after taking out to obtain a black heat-insulating and cooling coated nylon fabric.

[0074] Example 2

[0075] The dark-colored heat-insulating and cooling nylon coated fabric in this embodiment is specifically prepared in the following steps:

[0076] (1) Select a full matte nylon fabric base fabric doped with TiO2 particles, with a specification of 1 / 3 right-slant and a thickness of 0.11 mm; wash the base fabric with alcohol and dry it, then wash it with deionized water, squeeze it twice, and the squeezing rate is 40%;

[0077] (2) 100 parts of a polyurethane resin (brand 1030F) with a solid content of 30% and 10 parts of titanium dioxide with a main particle size of 0.1 μm to 0.3 μm are selected and poured into a mixture of DMF (10 parts) and butanone (10 parts); the degassed polyurethane resin and titanium dioxide mixed solution is scraped onto the base fabric prepared in step (1) with a coating thickness of 0.10 mm, and finally the mixture is placed in an oven at 105° C. and baked for 10 min, then taken out and cooled naturally.

[0078] (3) adding 5 parts of perylene black pigment, 25 parts of polymethyl methacrylate, 2.5 parts of curing agent and 70 parts of DMF into a beaker and stirring at a speed of 2000 r / min for 30 min, and obtaining a black slurry after degassing; applying the slurry on the surface of the fabric polyurethane coating prepared in step (2) with a coating thickness of 0.10 mm, and then baking in an oven at 90° C. for 20 min, taking it out and cooling it naturally;

[0079] (4) Add 30 parts of polymethyl methacrylate, 3 parts of curing agent, and 70 parts of DMF into a beaker and stir at a speed of 2000 r / min for 30 minutes to obtain a transparent slurry after degassing; apply the transparent slurry on the surface of the color coating prepared in step (3) with a coating thickness of 0.15 mm, and then bake in an oven at 90° C. for 20 minutes and cool naturally after taking out to obtain a black heat-insulating and cooling coated nylon fabric.

[0080] Example 3

[0081] The dark-colored heat-insulating and cooling nylon coated fabric in this embodiment is specifically prepared in the following steps:

[0082] (1) Select a full matte nylon fabric base fabric doped with TiO2 particles, with a specification of 1 / 3 right-slant and a thickness of 0.11 mm; wash the base fabric with alcohol and dry it, then wash it with deionized water, squeeze it twice, and the squeezing rate is 40%;

[0083] (2) 100 parts of a polyurethane resin (brand 1030F) with a solid content of 30% and 10 parts of titanium dioxide with a main particle size of 0.1 μm to 0.3 μm are selected and poured into a mixture of DMF (10 parts) and butanone (10 parts); the degassed polyurethane resin and titanium dioxide mixed solution is scraped onto the base fabric prepared in step (1) with a coating thickness of 0.10 mm, and finally the mixture is placed in an oven at 105° C. and baked for 10 min, then taken out and cooled naturally.

[0084] (3) adding 4 parts of perylene black pigment, 1 part of carbon black pigment, 25 parts of polymethyl methacrylate, 2.5 parts of curing agent and 70 parts of DMF into a beaker and stirring at a speed of 2000 r / min for 30 min, and obtaining a black slurry after degassing; applying the slurry on the surface of the fabric polyurethane coating prepared in step (2) with a coating thickness of 0.10 mm, and then baking in an oven at 90° C. for 20 min, taking out and cooling naturally;

[0085] (4) Add 30 parts of polymethyl methacrylate, 3 parts of curing agent, and 70 parts of DMF into a beaker and stir at a speed of 2000 r / min for 30 minutes to obtain a transparent slurry after degassing; apply the transparent slurry on the surface of the color coating prepared in step (3) with a coating thickness of 0.15 mm, and then bake in an oven at 90° C. for 20 minutes and cool naturally after taking out to obtain a black heat-insulating and cooling coated nylon fabric.

[0086] Example 4

[0087] The dark-colored heat-insulating and cooling nylon coated fabric in this embodiment is specifically prepared in the following steps:

[0088] (1) Select a full matte nylon fabric base fabric doped with TiO2 particles, with a specification of 1 / 3 right-slant and a thickness of 0.11 mm; wash the base fabric with alcohol and dry it, then wash it with deionized water, squeeze it twice, and the squeezing rate is 40%;

[0089] (2) 100 parts of a polyurethane resin (brand 1030F) with a solid content of 30% and 10 parts of titanium dioxide with a main particle size of 0.1 μm to 0.3 μm are selected and poured into a mixture of DMF (10 parts) and butanone (10 parts); the degassed polyurethane resin and titanium dioxide mixed solution is scraped onto the base fabric prepared in step (1) with a coating thickness of 0.10 mm, and finally the mixture is placed in an oven at 105° C. and baked for 10 min, then taken out and cooled naturally.

[0090] (3) Add 5 parts of carbon black pigment, 25 parts of polymethyl methacrylate, 2.5 parts of curing agent, and 70 parts of DMF into a beaker and stir at a speed of 2000 r / min for 30 minutes to obtain a black slurry after degassing; apply the slurry on the surface of the fabric polyurethane coating prepared in step (2) to a coating thickness of 0.10 mm, and then bake in an oven at 90° C. for 20 minutes, take out, and cool naturally;

[0091] (4) Add 30 parts of polymethyl methacrylate, 3 parts of curing agent, and 70 parts of DMF into a beaker and stir at a speed of 2000 r / min for 30 minutes to obtain a transparent slurry after degassing; apply the transparent slurry on the surface of the color coating prepared in step (3) with a coating thickness of 0.15 mm, and then bake in an oven at 90° C. for 20 minutes and cool naturally after taking out to obtain a black heat-insulating and cooling coated nylon fabric.

[0092] Example 5

[0093] The dark-colored heat-insulating and cooling nylon coated fabric in this embodiment is specifically prepared in the following steps:

[0094] (1) Select a full matte nylon fabric base fabric doped with TiO2 particles, with a specification of 1 / 3 right-slant and a thickness of 0.11 mm; wash the base fabric with alcohol and dry it, then wash it with deionized water, squeeze it twice, and the squeezing rate is 40%;

[0095] (2) 100 parts of a polyurethane resin (brand 3028NHB) with a solid content of 30% are selected and poured into 10 parts of DMF; the degassed polyurethane resin wet material mixed solution is scraped onto the base fabric prepared in step (1) with a coating thickness of 0.10 mm; then it is immersed in a DMF solution with a mass concentration of 15% for coagulation for 5 minutes; then it is subjected to a water squeezing process, then washed with water, and finally placed in an environment of 25°C to dry naturally.

[0096] (3) adding 5 parts of perylene black pigment, 25 parts of polymethyl methacrylate, 2.5 parts of curing agent and 70 parts of DMF into a beaker and stirring at a speed of 2000 r / min for 30 min, and obtaining a black slurry after degassing; applying the slurry on the surface of the fabric polyurethane coating prepared in step (2) with a coating thickness of 0.10 mm, and then baking in an oven at 90° C. for 20 min, taking it out and cooling it naturally;

[0097] (4) Add 30 parts of polymethyl methacrylate, 3 parts of curing agent, and 70 parts of DMF into a beaker and stir at a speed of 2000 r / min for 30 minutes to obtain a transparent slurry after degassing; apply the transparent slurry on the surface of the color coating prepared in step (3) with a coating thickness of 0.15 mm, and then bake in an oven at 90° C. for 20 minutes and cool naturally after taking out to obtain a black heat-insulating and cooling coated nylon fabric.

[0098] Example 6

[0099] The dark-colored heat-insulating and cooling nylon coated fabric in this embodiment is specifically prepared in the following steps:

[0100] (1) Select a full matte nylon fabric base fabric doped with TiO2 particles, with a specification of 1 / 3 right-slant and a thickness of 0.11 mm; wash the base fabric with alcohol and dry it, then wash it with deionized water, squeeze it twice, and the squeezing rate is 40%;

[0101] (2) 100 parts of a polyurethane resin (brand 3028NHB) with a solid content of 30% are selected and poured into 10 parts of DMF; the degassed polyurethane resin wet material mixed solution is scraped onto the base fabric prepared in step (1) with a coating thickness of 0.10 mm; then it is immersed in a DMF solution with a mass concentration of 15% for coagulation for 5 minutes; then it is subjected to a water squeezing process, then washed with water, and finally placed in an environment of 25°C to dry naturally.

[0102] (3) Add 5 parts of carbon black pigment, 25 parts of polymethyl methacrylate, 2.5 parts of curing agent, and 70 parts of DMF into a beaker and stir at a speed of 2000 r / min for 30 minutes to obtain a black slurry after degassing; apply the slurry on the surface of the fabric polyurethane coating prepared in step (2) to a coating thickness of 0.10 mm, and then bake in an oven at 90° C. for 20 minutes, take out, and cool naturally;

[0103] (4) Add 30 parts of polymethyl methacrylate, 3 parts of curing agent, and 70 parts of DMF into a beaker and stir at a speed of 2000 r / min for 30 minutes to obtain a transparent slurry after degassing; apply the transparent slurry on the surface of the color coating prepared in step (3) with a coating thickness of 0.15 mm, and then bake in an oven at 90° C. for 20 minutes and cool naturally after taking out to obtain a black heat-insulating and cooling coated nylon fabric.

[0104] Comparative Example 1

[0105] In this embodiment, the fabric is a conventional matte nylon base fabric.

[0106] Comparative Example 2

[0107] Comparative Example 2 is substantially the same as Example 1, except that, in this example, the near-infrared reflective layer is removed.

[0108] Comparative Example 3

[0109] Comparative Example 3 is substantially the same as Example 1, except that, in this example, the near-infrared reflective layer is removed, and carbon black is used instead of perylene black.

[0110] Combination Figure 3 , Figure 3 b is the UV-Vis-NIR reflectivity curve of the fabric of Example 1, and a is the UV-Vis-NIR reflectivity curve of Comparative Example 1. By comparing Example 1 with Comparative Example 1, it can be seen that the fabric of Example 1 has a higher reflectivity in the near-infrared region. Although the color rendering effect in the visible light region is poor, its reflection effect is greatly improved. Therefore, it can be seen that the fabric structure of the present application can greatly improve the reflection effect of the fabric while ensuring a certain color rendering, thereby achieving its efficient heat insulation and cooling effect.

[0111] Combination Figure 3 , Figure 3 b is the UV-Vis-NIR reflectivity curve of the fabric of Example 1, and c is the UV-Vis-NIR reflectivity curve of Comparative Example 2. Example 1 is compared with Comparative Example 2, and the near-infrared reflective layer is removed from Comparative Example 2. It can be seen that the reflectivity of the fabric of Example 1 in the near-infrared region is higher, and the difference in color rendering effect in the visible light region is smaller than that of Comparative Example 2. Therefore, it can be seen that by providing a near-infrared reflective layer, the effect of the fabric reflecting near-infrared light can be effectively enhanced, so that the heat insulation and cooling effect of the fabric is better.

[0112] Combination Figure 3 , Figure 3 In the figure, c is the UV-Vis-NIR reflectivity curve of the fabric of Comparative Example 2, and d is the UV-Vis-NIR reflectivity curve of Comparative Example 3. Comparative Example 2 is compared with Comparative Example 3, and Comparative Example 3 uses carbon black to replace the perylene black color of Comparative Example 2. It can be seen that the fabric of Comparative Example 2 has a higher reflectivity in the near-infrared region, and the difference in color rendering effect in the visible light region is smaller than that of Comparative Example 3. Therefore, it can be seen that the effect of the fabric reflecting near-infrared light can be effectively enhanced by setting the perylene black color.

[0113] The above contents are merely examples and illustrations of the structure of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and these obvious replacement forms all belong to the protection scope of the present invention.

Claims

1. A dark color cooling nylon fabric, characterized in that: include: A nylon fabric base fabric layer (100), a near-infrared reflection layer (200) and an infrared perspective color layer (300); The infrared perspective color layer (300), the near-infrared reflection layer (200), and the nylon fabric base cloth layer (100) are sequentially overlapped, and the infrared perspective color layer (300) comprises a mixed pigment and a soft transparent resin.

2. The dark-colored cooling nylon fabric according to claim 1, characterized in that: The near-infrared reflective layer (200) is configured as a porous membrane layer, and the porous membrane layer comprises a nylon polymer porous membrane layer or a polyurethane polymer porous membrane layer.

3. The dark-colored cooling nylon fabric according to claim 1, characterized in that: The near-infrared reflective layer (200) is configured as a film layer doped with heat reflective particles, and the film layer doped with heat reflective particles comprises a porous film layer formed by mixing nylon polymer with heat reflective particles or a porous film layer formed by mixing polyurethane polymer with heat reflective particles.

4. The dark color cooling nylon fabric according to claim 1, characterized in that: The nylon fabric base fabric layer (100) is a full-dull nylon fabric, and the full-dull nylon fabric is spun from full-dull nylon fibers doped with heat-reflective particles.

5. The dark-colored cooling nylon fabric according to any one of claims 3 or 4, characterized in that: The heat reflective particles are configured as one or a mixture of particles selected from the group consisting of TiO2, Cr2O3, BaSO4, SiO2 and ZnO.

6. The dark-colored cooling nylon fabric according to claim 1, characterized in that: It also comprises a surface transparent heat-insulating layer (400), wherein the surface transparent heat-insulating layer (400) is connected to a side of the infrared perspective color layer (300) that is away from the near-infrared reflective layer (200).

7. The dark-colored cooling nylon fabric according to claim 6, characterized in that: The surface transparent heat-insulating layer (400) is configured as an acrylic resin coating, and the acrylic resin coating comprises a mixture of one or more soft and hard components selected from the group consisting of polymethyl methacrylate, polymethyl acrylate, polybutyl acrylate, and polydipentaerythritol hexaacrylate.

8. The dark-colored cooling nylon fabric according to claim 1, characterized in that: The soft transparent resin is one or a mixture of polyurethane resin, acrylic resin and epoxy resin.

9. The dark-colored cooling nylon fabric according to claim 1, characterized in that: The pigments include heterocyclic pigments.

10. A method for preparing the dark-colored cooling nylon fabric according to any one of claims 1 to 9, characterized in that: The following steps are involved: The nylon fabric base fabric layer is sequentially subjected to alcohol cleaning, drying, deionized water cleaning and water squeezing treatment; Covering the treated nylon fabric base fabric layer with a near infrared reflective layer, and then performing a drying operation, and taking it out to cool naturally after the drying is completed; The infrared perspective color layer is coated on the side of the near infrared reflection layer away from the nylon fabric base fabric layer, and then a drying operation is performed. After the drying is completed, the product is taken out and naturally cooled to obtain a product.

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