阅读说明：本技术 未包含金属成分的深色红外线反射纤维、其制造方法、及深色红外线反射纤维纺织品 (Deep color infrared reflecting fiber containing no metal component, process for producing the same, and deep color infrared reflecting fiber textile ) 是由 廖德超 徐森煌 方钧颢 于 2019-10-15 设计创作，主要内容包括：本发明公开一种未包含金属成分的深色红外线反射纤维、其制造方法、及深色红外线反射纤维纺织品。深色红外线反射纤维包含高分子树脂材料及有机偶氮基颜料。有机偶氮基颜料以多个微粒的形式分散于高分子树脂材料中。有机偶氮基颜料具有介于0.2微米至4微米之间的平均粒径、及不小于300℃的耐热温度。有机偶氮基颜料于780纳米至2,500纳米的红外线波长范围中的红外线反射率不小于50％。借此,所述深色红外线反射纤维纺织品可以在不需要添加任何的无机重金属成分及额外深色颜料的情况下、能具有理想的深色效果及理想的隔热效果、且能同时具有环保低毒性的优势。(The invention discloses a dark infrared reflecting fiber containing no metal component, a manufacturing method thereof and a dark infrared reflecting fiber textile. The dark infrared reflecting fiber comprises a polymer resin material and an organic azo-based pigment. The organic azo-based pigment is dispersed in the form of a plurality of fine particles in the polymer resin material. The organic azo-based pigment has an average particle diameter of 0.2 to 4 μm and a heat resistant temperature of not less than 300 ℃. The infrared reflectance of the organic azo-based pigment in the infrared wavelength range of 780 nm to 2,500 nm is not less than 50%. Therefore, the dark infrared reflection fiber textile can have ideal dark color effect and ideal heat insulation effect without adding any inorganic heavy metal component and extra dark color pigment, and has the advantages of environmental protection and low toxicity.)

1. A dark infrared-reflective fiber containing no metal component, formed by melt spinning, comprising:

a polymer resin material; and

an organic azo-based pigment formed by diazo coupling reaction of diazo component and coupling component, wherein the organic azo-based pigment is dispersed in the form of a plurality of particles in the high molecular resin material;

wherein each of the plurality of fine particles of the organic azo-based pigment has an average particle diameter of 0.2 to 4 μm and a heat resistant temperature of not less than 300 ℃, and an infrared reflectance of the organic azo-based pigment is not less than 50% in an infrared wavelength range of 780 to 2,500 nm.

2. The dark infrared-reflective fiber according to claim 1, wherein said organic azo-based pigment has a plurality of chromophores including an azo group and a methylimino group in its molecular structure.

3. The dark infrared-reflective fiber according to claim 2, wherein the organic polymer resin material is at least one material selected from the group consisting of polyester resin, polyolefin resin, polyacrylonitrile resin, and polyamide resin.

4. The dark infrared reflective fiber according to claim 2, wherein the content of said polymeric resin material is in the range of 80 to 99.5 wt% and the content of said organic azo-based pigment is in the range of 0.5 to 20 wt%, based on 100 wt% of the total weight of said dark infrared reflective fiber, so that the L value of the whole of said dark infrared reflective fiber in CIELAB color space coordinates is not more than 15.

5. The dark infrared-reflective fiber of claim 2, wherein the dark infrared-reflective fiber does not contain any heavy metal component of chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), silver (Ag), cadmium (Cd), gold (Au), mercury (Hg), or lead (Pb), and also does not contain any compatibilizing agent.

6. The dark infrared-reflective fiber according to claim 2, further comprising: an antioxidant, and the antioxidant is present in an amount ranging from 0.1 wt% to 1 wt% based on the total weight of the dark infrared-reflective fiber as 100 wt%.

7. A method for producing a dark infrared-reflective fiber, comprising:

implementing a master batch forming step comprising: mixing 50 to 99.5 parts by weight of a high polymer resin material and 0.5 to 50 parts by weight of an organic azo-based pigment at the temperature of between 150 and 300 ℃ to form a plurality of heat-insulating master batches; and

performing a fiber forming step comprising: carrying out melt spinning on a plurality of heat-insulating master batches at the temperature of 150-300 ℃ to form the dark infrared reflecting fiber;

wherein the organic azo-based pigment is formed by diazo coupling reaction of a diazo component and a coupling component, and the organic azo-based pigment is dispersed in the form of a plurality of particles in the high polymer resin material;

wherein each of the plurality of fine particles of the organic azo-based pigment has an average particle diameter of 0.2 to 4 μm and a heat resistant temperature of not less than 300 ℃, and an infrared reflectance of the organic azo-based pigment is not less than 50% in an infrared wavelength range of 780 to 2,500 nm;

wherein the L value of the whole dark infrared reflecting fiber in CIELAB color space coordinate is not more than 15.

8. The method for producing a dark infrared-reflective fiber according to claim 7, wherein the organic azo-based pigment has a plurality of chromophores including an azo group and a methylimino group in a molecular structure.

9. The method of claim 8, wherein the organic polymer resin material is at least one material selected from the group consisting of polyester resin, polyolefin resin, polyacrylonitrile resin, and polyamide resin.

10. A deep color infrared reflective fibrous textile formed by interlacing a plurality of deep color infrared reflective fibers, the deep color infrared reflective fibrous textile having a thickness of between 500 microns and 1,500 microns, and each of the deep color infrared reflective fibers comprising:

a polymer resin material; and

an organic azo-based pigment formed by diazo coupling reaction of diazo component and coupling component, wherein the organic azo-based pigment is dispersed in the form of a plurality of particles in the high molecular resin material; wherein each of the plurality of fine particles of the organic azo-based pigment has an average particle diameter of 0.2 to 4 μm and a heat resistant temperature of not less than 300 ℃, and an infrared reflectance of the organic azo-based pigment is not less than 50% in an infrared wavelength range of 780 to 2,500 nm.

Technical Field

The present invention relates to a dark infrared-reflective fiber, and more particularly to a dark infrared-reflective fiber containing no metal component, a method for producing the same, and a textile of the dark infrared-reflective fiber.

Background

The existing textile added with carbon black has certain blackness, but has no heat insulation effect, so that when a user wears clothes made of the textile, the problem that the user feels uncooled exists.

In order to solve the problem, a dark-color heat-insulating textile appears on the market, and has a certain heat-insulating effect and blackness. However, the textile with dark color needs to be matched with other dark color dyes (such as black dyes) in addition to inorganic infrared reflecting materials (such as inorganic heavy metal materials with elements containing iron, copper, nickel, cobalt or chromium) so as to enable the textile to achieve a certain black color. Therefore, the dark-color heat-insulating textile can cause adverse effects on human bodies and the environment whether in use or after being discarded.

Therefore, the present inventors have found that the above-mentioned drawbacks can be improved, and have made intensive studies in cooperation with the application of scientific principles, and finally have proposed the present invention which is designed reasonably and effectively to improve the above-mentioned drawbacks.

Disclosure of Invention

The present invention is directed to a dark infrared reflective fiber that does not include a metal component, a method for manufacturing the same, and a dark infrared reflective fiber textile.

In order to solve the above-mentioned technical problems, one of the technical solutions of the present invention is to provide a dark infrared reflective fiber containing no metal component, which is formed by melt spinning, and includes: a polymer resin material; and an organic azo-based pigment formed by diazo coupling reaction of diazo component and coupling component, wherein the organic azo-based pigment is dispersed in the form of a plurality of particles in the high polymer resin material; wherein each of the plurality of fine particles of the organic azo-based pigment has an average particle diameter of 0.2 to 4 μm and a heat resistant temperature of not less than 300 ℃, and an infrared reflectance of the organic azo-based pigment is not less than 50% in an infrared wavelength range of 780 to 2,500 nm.

Preferably, the organic azo-based pigment has a plurality of chromophores each having an azo group and a methine group in its molecular structure.

Preferably, the organic polymer resin material is at least one material selected from the group consisting of polyester resin, polyolefin resin, polyacrylonitrile resin, and polyamide resin.

Preferably, the content of the polymeric resin material ranges from 80 wt% to 99.5 wt%, and the content of the organic azo-based pigment ranges from 0.5 wt% to 20 wt%, based on the total weight of the dark infrared-reflective fibers being 100 wt%, so that the L value of the entirety of the dark infrared-reflective fibers in the CIELAB color space coordinate is not more than 15.

Preferably, the dark infrared-reflective fibers do not contain any heavy metal components of chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), silver (Ag), cadmium (Cd), gold (Au), mercury (Hg), or lead (Pb), and also do not contain any compatibilizing agents.

Preferably, the dark infrared-reflective fiber further comprises an antioxidant, and the antioxidant is present in an amount ranging from 0.1 wt% to 1 wt%, based on the total weight of the dark infrared-reflective fiber of 100 wt%.

In order to solve the above technical problem, another technical solution of the present invention is to provide a method for manufacturing a dark infrared reflective fiber, including: implementing a master batch forming step comprising: mixing 50 to 99.5 parts by weight of a high polymer resin material and 0.5 to 50 parts by weight of an organic azo-based pigment at the temperature of between 150 and 300 ℃ to form a plurality of heat-insulating master batches; and performing a fiber forming step comprising: carrying out melt spinning on a plurality of heat-insulating master batches at the temperature of 150-300 ℃ to form the dark infrared reflecting fiber; wherein the organic azo-based pigment is formed by diazo coupling reaction of a diazo component and a coupling component, and the organic azo-based pigment is dispersed in the form of a plurality of particles in the high polymer resin material; wherein each of the plurality of fine particles of the organic azo-based pigment has an average particle diameter of 0.2 to 4 μm and a heat resistant temperature of not less than 300 ℃, and an infrared reflectance of the organic azo-based pigment is not less than 50% in an infrared wavelength range of 780 to 2,500 nm; wherein the L value of the whole dark infrared reflecting fiber in CIELAB color space coordinate is not more than 15.

Preferably, the organic azo-based pigment has a plurality of chromophores each having an azo group and a methine group in its molecular structure.

Preferably, the organic polymer resin material is at least one material selected from the group consisting of polyester resin, polyolefin resin, polyacrylonitrile resin, and polyamide resin.

In order to solve the above technical problem, another technical solution of the present invention is to provide a deep color infrared reflective fiber textile, which is formed by interweaving a plurality of deep color infrared reflective fibers, wherein the deep color infrared reflective fiber textile has a thickness of 500 micrometers to 1,500 micrometers, and each of the deep color infrared reflective fibers includes: a polymer resin material; and an organic azo-based pigment formed by diazo coupling reaction of diazo component and coupling component, wherein the organic azo-based pigment is dispersed in the form of a plurality of particles in the high polymer resin material; wherein each of the plurality of fine particles of the organic azo-based pigment has an average particle diameter of 0.2 to 4 μm and a heat resistant temperature of not less than 300 ℃, and an infrared reflectance of the organic azo-based pigment is not less than 50% in an infrared wavelength range of 780 to 2,500 nm.

One of the advantages of the present invention is that the dark infrared reflective fiber, the manufacturing method thereof, and the dark infrared reflective fiber textile provided by the present invention can be obtained by "an organic azo-based pigment formed by diazo coupling reaction of diazo component and coupling component, and the organic azo-based pigment is dispersed in the form of a plurality of particles in the polymeric resin material" and "the plurality of particles of the organic azo-based pigment respectively have an average particle size of 0.2 to 4 microns and a heat resistant temperature of not less than 300 ℃, and the infrared reflectance of the organic azo-based pigment in the infrared wavelength range of 780 to 2,500 nm is not less than 50%", so that the dark infrared reflective fiber textile can be made without adding any inorganic heavy metal component and additional dark pigment, Has ideal deep color effect and ideal heat insulation effect, and has the advantages of environmental protection and low toxicity.

Further, since the dark colored infrared ray reflective fiber textile has a desirable heat insulating effect, the magnitude of the temperature rise of the dark colored infrared ray reflective fiber textile under the irradiation of sunlight can be effectively reduced, whereby the problem that the user feels uncooled when the dark colored infrared ray reflective fiber textile is made into clothes to be put on the user exists.

For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description and accompanying drawings, which are provided for purposes of illustration and description only and are not intended to limit the invention.

Drawings

FIG. 1 is a schematic representation of a dark infrared-reflective fiber according to an embodiment of the present invention.

FIG. 2 is a flow chart of a method for making a dark infrared reflective fiber according to an embodiment of the present invention.

FIG. 3 is a schematic representation of a dark infrared-reflective fibrous textile according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention disclosed herein are described below with reference to specific embodiments, and those skilled in the art will understand the advantages and effects of the present invention from the disclosure of the present specification. The invention is capable of other and different embodiments and its several details are capable of modification and various other changes, which can be made in various details within the specification and without departing from the spirit and scope of the invention. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.

[ dark infrared-reflective fiber ]

Referring to fig. 1, the present embodiment discloses a dark infrared reflective fiber 100 containing no metal component, and the dark infrared reflective fiber 100 is formed by a melt spinning process.

Furthermore, the deep color infrared reflective fiber 100 of the present embodiment can have ideal deep color effect and heat insulation effect without adding any heavy metal component and additional deep color pigment by adding organic azo-based pigment having specific functional group and specific physicochemical property and adjusting the formula of the ratio of each component, and can have the advantages of environmental protection and low toxicity.

In order to achieve the above purpose, the dark infrared reflective fiber 100 includes a polymer resin material 1(polymer resin material) and an organic azo-based pigment 2(organic azo-based pigment) dispersed in the polymer resin material 1.

The main component of the deep infrared reflective fiber 100 is mainly a polymer resin material 1. That is, the polymer resin material 1 is a matrix component of the deep infrared reflective fiber 100. Further, in order to be applicable to the melt spinning process, the polymer resin material 1 is preferably at least one material selected from the group consisting of a Polyester (PET) resin, a Polyolefin (PE) resin, a Polyacrylonitrile (PAN) resin, and a Polyamide (PA) resin, but the present invention is not limited thereto.

Further, the organic azo-based pigment 2 is dispersed in the form of a plurality of fine particles in the polymer resin material 1.

The organic azo-based pigment 2 is formed by diazo coupling reaction of a specific diazo component and a specific coupling component, and the organic azo-based pigment 2 has a plurality of chromophores including an azo group and a methine group in its molecular structure, in terms of specific functional groups.

The diazo coupling reaction refers to a reaction in which aromatic diazonium salts and aromatic compounds with high charge density undergo a coupling reaction to generate azo compounds.

Further, the "specific diazo component" may be, for example, 3- (4-aminophenylimino) -1-oxo-4, 5,6, 7-tetrachloro-quinoline, and the "specific coupling component" may be, for example, a 3-oxobutanamide residue compound, but the present invention is not limited thereto. The "methylimino group" may be referred to as "methylimino group", and has a chemical formula of H₃CHN＝。

It is worth mentioning that, because the organic azo-based pigment 2 has a methyl imine group in the molecular structure, the organic azo-based pigment 2 can absorb light in the visible light region (e.g., visible light with a wavelength of 380 to 780 nm) and can reflect light in the infrared region (e.g., infrared light with a wavelength of 780 to 2,500 nm). Accordingly, the organic azo-based pigment 2 is a dark azo-based pigment, and more preferably a black azo-based pigment, and the dark infrared reflective fiber 100 can have a dark effect and a heat insulating effect by the addition of the organic azo-based pigment 2.

In terms of physicochemical characteristics, the particles of the organic azo-based pigment 2 each have an average particle diameter of 0.2 to 4 μm and a heat resistance temperature of not less than 300 ℃, and an infrared reflectance of the organic azo-based pigment 2 in an infrared wavelength range of 780 to 2,500 nm is preferably not less than 50%.

In more detail, in order to allow the organic azo-based pigment 2 to be uniformly dispersed in the polymeric resin material 1 during the fiber preparation process, the average particle size of the organic azo-based pigment 2 is preferably selected to be between 0.2 micrometers and 4 micrometers, and more preferably, between 0.3 micrometers and 3 micrometers. If the average particle diameter of the organic azo-based pigment 2 is higher than the upper limit of the above particle diameter range, the organic azo-based pigment 2 may not be uniformly dispersed in the polymer resin material 1. Furthermore, if the average particle size of the organic azo-based pigment 2 is too large, it may cause fiber spinning irregularity (e.g., screw slippage) or loss of processing equipment during the production process. On the contrary, if the average particle diameter of the organic azo-based pigment 2 is less than the lower limit of the above particle diameter range, the manufacturing cost of the fiber may be increased and the organic azo-based pigment 2 may not exert the intended effect (e.g., heat insulating effect) in the fiber.

Further, in order to prevent the organic azo-based pigment 2 from cracking during the fiber preparation process (particularly, during the melt spinning process) and to maintain the characteristics of the organic azo-based pigment 2 itself, the heat resistant temperature of the organic azo-based pigment 2 is preferably selected to be not lower than 300 ℃, and more preferably not lower than 350 ℃.

In addition, in order to allow the organic azo-based pigment 2 to produce an excellent heat insulating effect in the fiber, an infrared reflectance of the organic azo-based pigment 2 in an infrared wavelength range of 780 nm to 2,500 nm is preferably not less than 50%, and more preferably not less than 60%. That is, the organic azo-based pigment 2 reflects infrared rays that may cause an increase in the temperature of the textile, thereby exhibiting a heat-insulating effect.

In the formulation of the proportions of the respective components, the content of the polymer resin material 1 ranges from 80 wt% to 99.5 wt%, and the content of the organic azo-based pigment 2 ranges from 0.5 wt% to 20 wt%, based on 100 wt% of the total weight of the dark infrared-reflective fiber 100. Preferably, the content of the polymer resin material 1 ranges from 90 wt% to 99.5 wt%, and the content of the organic azo-based pigment 2 ranges from 0.5 wt% to 10 wt%. More preferably, the content of the polymeric resin material 1 ranges from 95 wt% to 99.5 wt%, and the content of the organic azo-based pigment 2 ranges from 0.5 wt% to 5 wt%.

The deep color infrared reflective fiber 100 of the present embodiment can have ideal deep color effect and heat insulation effect without adding any heavy metal component and extra deep color pigment, and can have the advantages of environmental protection and low toxicity by selecting the specific functional group and physical and chemical properties of the organic azo-based pigment 2 and adjusting the proportion formula of each component.

If the content of the dark infrared-reflective fibers 100 is higher than the upper limit of the above content range, the fibers may be not spun smoothly (e.g., screw slippage) or the manufacturing equipment may be worn out during the manufacturing process. On the contrary, if the content of the infrared reflective fiber 100 having a dark color is lower than the lower limit of the above content range, the color development effect of the fiber may be poor (e.g., the degree of blackness is insufficient) and the infrared reflectance may be insufficient, so that the fiber may not have a desired dark color and heat insulation effect.

According to the selection of the above materials and the adjustment of the proportion formula of each component, the L value of the whole of the dark infrared reflective fiber 100 in the CIELAB color space coordinate is preferably not more than 15, and more preferably not more than 12. That is, the dark infrared reflective fiber 100 can exhibit a sufficient degree of blackness without the need to add additional dark pigments.

Further, since the organic azo-based pigment 2 can provide the deep color infrared reflective fiber 100 with a desirable deep color and heat insulating effect, the deep color infrared reflective fiber 100 does not need to be added with any inorganic heat insulating material. That is, in the present embodiment, the dark infrared reflective fiber 100 does not include any heavy metal component of chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), silver (Ag), cadmium (Cd), gold (Au), mercury (Hg), or lead (Pb), so that the dark infrared reflective fiber 100 has advantages of environmental protection and low toxicity.

In addition, since the organic azo-based pigment 2 and the polymeric resin material 1 (e.g., PET, PE, PAN …, etc.) are both organic materials and have a certain compatibility with each other, in the present embodiment, the dark infrared-reflective fiber 100 preferably does not include any non-reactive compatilizer or reactive compatilizer (e.g., maleic compatilizer, acrylic compatilizer, epoxy compatilizer …, etc.).

It should be noted that, in an embodiment of the present invention, the dark infrared reflective fiber 100 may further include an antioxidant, and the antioxidant is included in an amount ranging from 0.1 wt% to 1 wt% based on the total weight of the dark infrared reflective fiber 100 being 100 wt%. The antioxidant may be, for example, a phenolic antioxidant, an aminic antioxidant, a phosphorous antioxidant, or a thioester antioxidant, and the antioxidant in this embodiment is preferably a phenolic antioxidant, but the present invention is not limited thereto. Since the dark infrared-reflective fiber 100 is added with an antioxidant, yellowing of the fiber can be effectively prevented.

[ Process for producing dark Infrared-reflective fiber ]

The above is a description relating to the deep color infrared reflective fiber 100 of the present embodiment, and a method of manufacturing the deep color infrared reflective fiber 100 will be described below according to an embodiment of the present invention.

Referring to fig. 2, the embodiment of the present invention also discloses a method for manufacturing the dark infrared reflective fiber. The method for manufacturing the dark infrared reflective fiber comprises a step S110, a step S120 and a step S130. It should be noted that the order of the steps and the actual operation manner carried out in the embodiment can be adjusted according to the requirement, and are not limited to the embodiment.

Step S110 is a step of selecting a material. The material selecting step comprises the following steps: a polymer resin material 1 and an organic azo-based pigment 2 are provided.

The polymer resin material 1 is preferably at least one material selected from the group consisting of Polyester (PET) resin, Polyolefin (PE) resin, Polyacrylonitrile (PAN) resin, and Polyamide (PA) resin. The organic azo-based pigment 2 is formed by diazo coupling reaction of diazo component and coupling component, and the molecular structure of the organic azo-based pigment 2 has a plurality of chromophores of azo group and imino group. The plurality of fine particles of the organic azo-based pigment 2 have an average particle diameter of 0.2 to 4 μm (more preferably, 0.3 to 3 μm), and a heat resistant temperature of not less than 300 ℃ (more preferably, not less than 350 ℃), respectively, and the infrared reflectance of the organic azo-based pigment 2 in the infrared wavelength range of 780 to 2,500 nm is not less than 50%.

Step S120 is to perform a master batch forming step. The master batch forming step comprises: melting and blending 50 to 99.5 weight parts of a high polymer resin material 1 and 0.5 to 50 weight parts of an organic azo-based pigment 2 at the temperature of 150 to 300 ℃, cooling and solidifying to form a plurality of heat-insulating master batches. Wherein, in the master batch forming step, the organic azo-based pigment 2 can be dispersed in the form of a plurality of fine particles in the polymeric resin material 1 by blending.

Step S130 is a fiber forming step, including: and carrying out melt spinning on a plurality of heat-insulating master batches at the temperature of 150-300 ℃ to form a plurality of dark infrared reflecting fibers 100.

More specifically, in an embodiment of the present invention, if the content of the organic azo-based pigment 2 in the heat-insulating mother particles is within a proper range, a plurality of heat-insulating mother particles may be directly melt-spun to form a plurality of dark-colored infrared-reflective fibers 100.

In another embodiment of the present invention, if the content range of the organic azo-based pigment 2 in the heat-insulating master batch is too high, a plurality of heat-insulating master batches may be further blended with a pure polymer resin material in a proper proportion and melt-spun together, so that the organic azo-based pigment 2 has a proper content range in the dark infrared reflective fiber 100.

Therefore, the dark infrared reflective fiber 100 has ideal dark color effect and heat insulation effect without adding any heavy metal component and extra dark color pigment, and has the advantages of environmental protection and low toxicity.

According to the above configuration, the L value of the whole of the dark infrared-reflective fiber 100 in CIELAB color space coordinates is preferably not more than 15, and more preferably not more than 12. That is, the dark infrared-reflective fiber 100 can exhibit a sufficient degree of blackness.

It is worth mentioning that, since the heat resistant temperature of the organic azo-based pigment 2 is preferably selected to be not lower than 300 ℃, and more preferably not lower than 350 ℃, the organic azo-based pigment 2 is not severely cracked during the preparation of the heat-insulating masterbatch of the step S120 and the melt spinning of the step S130, so that the organic azo-based pigment 2 can maintain its own characteristics.

[ dark infrared-reflective fiber textile ]

Referring to fig. 3, the dark infrared reflective fibers 100 can be interlaced to form a dark infrared reflective fiber textile T.

The textile T preferably has a thickness of 500 to 1,500 micrometers, and each of the dark infrared reflective fibers 100 includes a polymer resin material 1 and an organic azo-based pigment 2 dispersed in the polymer resin material 1. The material selection and content range of the polymer resin material 1 and the organic azo-based pigment 2 are described in detail in the above embodiments, and are not repeated herein.

[ test data ]

In the following, dark infrared-reflective fibrous textiles of embodiments of the present invention are subjected to processes such as: and testing material characteristics such as infrared reflectivity, heat insulation effect, color degree and the like.

In comparative examples, commercially available dark colored heat insulating textiles and textiles with carbon black added generally were also tested together under the same specifications to compare the differences in material properties between the dark colored infrared reflective fibrous textiles of the examples of the present invention and those of the comparative examples.

The commercially available dark-color heat-insulating textile refers to a textile added with inorganic infrared reflecting materials (such as inorganic heavy metal materials) and dark-color dyes (such as black dyes). In general, a textile to which carbon black is added is a textile to which carbon black is used as a source of a dark color pigment and to which no infrared-reflective material is added.

The infrared reflectance was measured by using a UV/Vis/NIR spectrometer (model Lambda 750, Perkin Elmer) to measure the reflectance of infrared light having a wavelength of 780 nm to 2,500 nm under the same weight and specification of the cloth for the dark infrared reflective fiber textile according to the example of the present invention, the dark heat insulating textile currently commercially available, and the textile to which carbon black is generally added. In more detail, the infrared reflectance is measured in accordance with the provisions of JIS R3106 in Japanese Industrial Standards (JIS), and the calculated wavelength range is from 780 nm to 2,500 nm, and more preferably from 780 nm to 2,100 nm. In terms of test results, the infrared reflectance of the dark infrared-reflective fiber textile of the present invention was approximately 57% to 58%, the infrared reflectance of the commercially available dark thermally insulating textile was approximately 52% to 53%, and the infrared reflectance of the textile with the carbon black added was generally 10% or less. The results of the above experimental data testing demonstrate that the dark colored infrared reflective fibrous textile of the embodiments of the present invention has approximately the same or slightly superior infrared reflective effect as commercially available dark colored heat insulating textiles. Furthermore, the infrared reflection effect of the dark infrared reflection fiber textile of the embodiment of the invention is obviously better than that of the common textile added with carbon black. It should be noted that the infrared reflectance of the raw organic azo-based pigment in this embodiment is approximately between 65% and 70%, and the content of the organic azo-based pigment in the fiber is approximately between 0.5% and 20%, so that the infrared reflectance of the final textile is approximately between 57% and 58%.

The test of the heat insulation effect refers to the standard of a nano label TN-037, and a light box testing machine is utilized to test the heat insulation performance of the textile for the deep color infrared reflection fiber textile, the existing commercially available deep color heat insulation textile and the common textile added with carbon black. The test method comprises the steps of simultaneously placing two cloth samples (one of which is a standard cloth sample) with the same cloth weight and cloth specification in a left semicircular tube and a right semicircular tube of a lamp box testing machine respectively, controlling the temperature of the standard cloth sample to be 46 +/-2 ℃, irradiating for 10 minutes by using the same heat source (an infrared lamp of 175W), observing the temperature rise condition of the tested cloth sample and comparing. In terms of test results, the temperature of the dark infrared-reflective fiber textile of the present examples was approximately between 45.5 ℃ and 46.5 ℃ after warming, the temperature of the commercially available dark thermal insulation textile was approximately between 46.5 ℃ and 47.5 ℃ after warming, and the temperature of the commonly added carbon black textile was approximately between 54 ℃ and 55 ℃. The results of the above experimental data testing demonstrate that the dark infrared reflective fiber textile of the embodiments of the present invention has about the same or slightly superior insulation as commercially available dark insulation textiles. Moreover, the heat insulation effect of the textile with the dark infrared reflection fibers is obviously superior to that of the textile with the carbon black.

The Color degree was measured by measuring the Color degree of a dark infrared-reflective fiber textile of the examples of the present invention, a dark heat-insulating textile currently commercially available, and a textile to which carbon black was generally added, with a spectrophotometer (model X-rite Color-Eye 70000A). The color and luster is described by using the CIELAB color space proposed by the international commission on illumination (CIE), wherein the L value is the lightness of the color (black is 0 and white is 100), the a value is the green-red value between green and red (green is negative and red is positive), and the b value is the blue-yellow value between blue and yellow (blue is negative and yellow is positive). In terms of test results, the dark infrared-reflective fiber textiles of the examples of the present invention had (L value, a value, b value) of (11.5, 0.61, 1.01), the commercially available dark thermal insulation textiles had (L value, a value, b value) of (16.1, -0.17, -0.40), and the textiles with carbon black added generally had (L value, a value, b value) of (13.0, 0.15, 0.27), respectively. The test results of the above experimental data show that the dark infrared reflective fiber textile of the embodiments of the present invention has superior blackness (L value) compared to commercially available dark heat insulating textiles and textiles to which carbon black is generally added.

TABLE 1 Experimental data test results of examples and comparative examples

According to the test results, the existing commercial dark-color heat-insulating textile has certain heat-insulating effect and blackness, however, the existing commercial dark-color heat-insulating textile needs to be matched with other dark-color dyes (such as black dyes) in addition to inorganic infrared reflecting materials (such as inorganic heavy metal materials) to achieve the equivalent blackness of the fiber textile.

Compared with the existing commercial dark-color heat-insulating textile, the dark-color infrared reflecting fiber textile provided by the embodiment of the invention has the advantages of ideal dark-color effect and heat-insulating effect, environmental friendliness and low toxicity under the condition that no heavy metal component or extra dark-color pigment is added.

[ advantageous effects of the embodiments ]

One of the advantages of the present invention is that the dark infrared reflective fiber containing no metal component, the manufacturing method thereof, and the dark infrared reflective fiber textile provided by the present invention can be obtained by "an organic azo-based pigment formed by diazo coupling reaction of diazo component and coupling component, and the organic azo-based pigment is dispersed in the form of a plurality of particles in the polymeric resin material" and "the plurality of particles of the organic azo-based pigment respectively have an average particle size of 0.2 to 4 microns and a heat-resistant temperature of not less than 300 ℃, and the infrared reflectance of the organic azo-based pigment in the infrared wavelength range of 780 to 2,500 nm is not less than 50%", so that the dark infrared reflective fiber textile can be made without adding any heavy metal component and additional dark pigment, Has ideal deep color effect and heat insulation effect, and has the advantages of environmental protection and low toxicity.

Further, since the dark colored infrared ray reflective fiber textile has a desirable heat insulating effect, the magnitude of the temperature rise of the dark colored infrared ray reflective fiber textile under the irradiation of sunlight can be effectively reduced, whereby the problem that the user feels uncooled when the dark colored infrared ray reflective fiber textile is made into clothes to be put on the user exists.

The disclosure is only a preferred embodiment of the invention and should not be taken as limiting the scope of the invention, so that the invention is not limited by the disclosure of the specification and drawings.