Refrigerating yarn and fabric thereof

Abstract

The application discloses a refrigeration yarn and a fabric thereof; the refrigeration yarn comprises a first yarn which is melt-spun from inorganic particles and a first base material, wherein the mass ratio of the inorganic particles to the first base material is between 5-12%; and a second yarn which is melt-spun from bio-carbon organic particles and a second base material; wherein the mass ratio of the bio-carbon organic particles to the second base material is between 2-3%; the refrigeration yarn is formed by the first yarn and the second yarn through a composite covering spinning method to form a fluffy yarn; the first yarn is provided with a plurality of pore spaces and is located at the outer layer of the yarn; the second yarn is located at the bottom of the yarn to form a support; and the shrinkage rate of the first yarn is 18-25% of the shrinkage rate of the second yarn. The application provides a refrigeration yarn and a fabric thereof, adopts a combination mode of two functional yarns, and achieves high solar reflectivity and high hemispherical emissivity, thereby meeting the requirements of summer clothes.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of refrigeration technology, in particular to a refrigeration yarn and fabric thereof. BACKGROUND

[0002] Radiative refrigeration technology is a new refrigeration technology emerging in recent years. Through material selection and structure regulation, the object can obtain high emissivity at 8-13 microns, and high reflectivity at specific solar radiation bands. By using this spectral selective regulation method, heat can be effectively radiated and energy input can be blocked, thereby achieving the purpose of refrigeration. At the same time, 95% of the energy in sunlight is concentrated in the visible and near-infrared bands. By increasing the high reflectivity of the fabric in the visible and near-infrared bands, the impact of heat on the human body can be reduced, thereby achieving the purpose of cooling. At present, in the field of clothing, radiative refrigeration technology is used in the process of coating and film pasting, which is mostly used in jackets or cotton clothes and other products for autumn and winter. The coating process uses multiple layers of paint and a large amount of adhesive to make the paint adhere to the substrate layer. After the fabric is made into clothes, the human skin is constantly breathing and metabolizing. The adhesive will greatly affect the breathability and air permeability of the clothes. Especially in the sunlight, although it can reflect sunlight and have high hemispherical emissivity at 8-13 microns, it can only keep the fabric temperature from rising, but it cannot guarantee the air permeability and comfort of the human body. Moreover, such fabric is too thick and heavy, and is not suitable for summer clothes. SUMMARY

[0003] The purpose of the present application is to overcome the above-mentioned defects or problems existing in the background art, and to provide a refrigeration yarn and fabric thereof, which uses the combination of two functional yarns to achieve high solar reflectivity and high hemispherical emissivity in the atmospheric window, and meets the requirements of summer clothes.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] A refrigeration yarn, comprising: a first yarn made by high-temperature melt spinning of inorganic particles and a first base material, wherein the mass ratio of the inorganic particles to the first base material is between 5-12%; and a second yarn made by high-temperature melt spinning of biocarbon organic particles and a second base material, wherein the mass ratio of the biocarbon organic particles to the second base material is between 2-3%; the refrigeration yarn is formed by the first yarn and the second yarn through a composite covering spinning method to form a fluffy yarn; the first yarn is provided with a plurality of pore spaces and is located at the outer layer of the yarn; the second yarn is located at the bottom of the yarn to form a tight support; the shrinkage rate of the first yarn is 18-25% of the shrinkage rate of the second yarn.

[0006] Preferably, the first base material and the second base material are both nylon fibers.

[0007] Preferably, the inorganic particles are titanium dioxide.

[0008] Preferably, the bio-carbon organic particles are one of seaweed carbon, graphite or straw carbon.

[0009] A cooling fabric is a double-layer fabric, comprising a first clothing layer formed by the above-mentioned cooling yarn into a double-layer fabric structure by using a 40G high-needle double-sided weaving method.

[0010] Preferably, the cooling fabric further comprises a second clothing layer located below the first clothing layer as the bottom layer of the cooling fabric; the second clothing layer is processed by adding phase change microcapsule particles to nylon fibers.

[0011] Preferably, the phase change microcapsule particles are paraffin-based phase change materials.

[0012] A cooling fabric is a single-layer fabric, comprising a first clothing layer formed by the above-mentioned cooling yarn into a double-layer fabric structure by using a 40G high-needle double-sided weaving method.

[0013] Preferably, the phase change microcapsule particles are added to the printing paste in the printing process to form a cool print on the second yarn in the first clothing layer; the first yarn is used as the face yarn and the second yarn is used as the ground yarn.

[0014] Preferably, the phase change microcapsule particles are paraffin-based phase change materials.

[0015] From the above description of the present application, the present application has the following beneficial effects compared with the prior art:

[0016] 1. The first yarn adds inorganic particles to the first base material to form a low-shrinkage yarn; the second yarn adds bio-carbon organic particles to the second base material to form a high-shrinkage yarn; the cooling yarn is formed by composite spinning of the first yarn and the second yarn to form a single composite bulky yarn. By taking advantage of the difference in shrinkage rate between the first yarn and the second yarn, after forming the fabric, the first yarn presents a bulky state on the outer layer of the fabric, has more bulky pore space, and the high concentration of inorganic particles uniformly distributed in the yarn can scatter a large amount of sunlight, forming a first scattering effect; secondly, through the pores of the internal bulky yarn, the scattering of light can be increased, forming a second scattering effect. The second yarn is in a high-shrinkage state, forming a tight support at the bottom of the overall yarn, and is closer to the skin, has a higher hemispherical emissivity, can more efficiently dissipate heat in the atmospheric window, and forms a radiative cooling effect.

[0017] 2、The first and second base materials are preferably nylon fibers, because they have a high moisture regain, and can bring an instant cool feeling to the skin when worn in summer.

[0018] 3、By high-temperature melting and spinning titanium dioxide and nylon fibers, uniform dispersion of TiO2 inorganic particles is formed on the surface of the nylon fibers after drawing. The agglomeration degree of the inorganic particles is controlled between single particles and five agglomerated particles during the melting and drawing process; the single particle distribution effect is preferably optimized to obtain a better scattering coefficient.

[0019] 4、The biological carbon organic particles are one of seaweed carbon, graphite or straw carbon, which can achieve a hemispherical emissivity of more than 94%.

[0020] 5、The cooling fabric is a double-layer fabric, wherein the first garment layer adopts a specific 40G high-needle double-sided weaving method to form a double-layer fabric structure. When sunlight enters the double-layer fabric structure space, it produces a multi-layer scattering effect on the sunlight, forming a third scattering effect.

[0021] 6、In this embodiment, the high and low shrinkage difference composite cooling yarn is made into the first garment layer, and the base material of nylon fiber is selected, and the second garment layer is processed by phase change microcapsule heat-absorbing type cool feeling auxiliary agent, to form a double-layer fabric, which can be made into a double-layer summer clothing; the cooling fabric has a triple scattering sunlight radiation cooling performance, as well as a phase change microcapsule heat-absorbing layer, a nylon contact cool feeling and other multiple combinations of cooling effects.

[0022] 7、Phase change microcapsule (PCM) is a kind of substance with heat regulating function, which is wrapped with a material called paraffin microcapsulation. When the temperature rises above a certain interval, PCM changes from solid to liquid, and when the temperature is below a certain interval, PCM changes from liquid to solid. Through the heat absorption, heat storage and heat release in these solid-liquid phase transitions, an environment that can buffer the temperature for the human body is maintained; by selecting paraffin phase change materials, PCM materials with a temperature conversion point closer to summer can absorb heat when the temperature of the human body or the surrounding microclimate temperature rises, reducing the hot and dry feeling.

[0023] 8、The cooling fabric is a single-layer fabric, wherein the first garment layer adopts a specific 40G high-needle double-sided weaving method to form a double-layer fabric structure. When sunlight enters the double-layer fabric structure space, it produces a multi-layer scattering effect on the sunlight, forming a third scattering effect.

[0024] 9、The embodiment adds phase change microcapsule particles to the printing paste, forms cool printing at the second yarn of the back of the face cloth of the double-layer fabric structure, absorbs heat, forms a single-layer fabric, and can make single-layer summer clothes; wherein the first yarn serves as the face yarn and plays a role of reflecting sunlight; the second yarn serves as the ground yarn and plays a role of emitting heat to the outside; the fabric has the triple scattering sunlight radiation refrigeration performance, the phase change microcapsule heat absorption layer, and the multiple combinations of the refrigeration effect of the nylon contact cool feeling.

[0025] 10、The embodiment selects a paraffin phase change material, has a PCM material close to the summer temperature conversion point, can absorb heat when the human body temperature or the microclimate temperature around the human body rises, and reduces the dry and hot feeling. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description are briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 It is a refrigeration yarn structure schematic diagram in the embodiment.

[0028] Figure 2 It is a first yarn internal microstructure schematic diagram in the embodiment.

[0029] Figure 3 It is a double-layer fabric structure schematic diagram in the embodiment.

[0030] Figure 4 It is a single-layer fabric structure schematic diagram in the embodiment.

[0031] Explanation of main reference signs:

[0032] First garment layer 1; second garment layer 2; first yarn 10; inorganic particles 11; first base material 12; second yarn 20; phase change microcapsule particles 30. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are preferred embodiments of the present application, and should not be regarded as exclusion of other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0034] In the claims, the specification, and the drawings of the present application, terms such as "first", "second", and "third" are used merely to distinguish one element from another, and do not imply a particular order or sequence except where expressly so defined by the claims.

[0035] In the claims, the specification, and the drawings of the present application, terms such as "central", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", and the like, indicate directions or positions based on the directions and positions shown in the drawings, and are used only to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, so they cannot be understood as limiting the specific protection scope of the present application.

[0036] In the claims, the specification, and the drawings of the present application, terms such as "fixedly connected" or "fixedly connected" should be understood broadly, that is, any connection mode between the two without displacement relationship and relative rotation relationship, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.

[0037] In the claims, the specification, and the drawings of the present application, the terms "include", "have" and their variants are intended to mean "include but not limited to".

[0038] Referring to Figure 1 , Figure 1 A refrigeration yarn is shown, which comprises a first yarn 10 and a second yarn 20. The first yarn 10 is high-temperature melt spun from inorganic particles 11 and a first base material 12, wherein the mass ratio of the inorganic particles 11 to the first base material 12 is between 5-12%; the second yarn 20 is high-temperature melt spun from biological carbon organic particles or graphite and a second base material; wherein the mass ratio of the biological carbon organic particles or graphite to the second base material is between 2-3%; the refrigeration yarn is formed by the first yarn 10 and the second yarn 20 through the spinning method of composite coating to form a fluffy yarn; the first yarn 10 is provided with a plurality of pore spaces located at the outer layer of the yarn; the second yarn 20 is located at the bottom of the yarn to form a tight support, and the shrinkage rate of the first yarn 10 is 18-25% of the shrinkage rate of the second yarn 20; in this embodiment, the shrinkage rate of the first yarn 10 is 20% of the shrinkage rate of the second yarn 20. Through the special fiber matching design of the base material layer and the structure of the fabric weaving method, an effective reflection of sunlight and a cooling fabric with a higher hemispherical emissivity of 8-13 microns are formed.

[0039] In this embodiment, both the first base material 12 and the second base material are nylon fibers, because they have a high moisture regain rate and can bring an instant cooling sensation to the skin when worn in summer.

[0040] In this embodiment, the inorganic particles 11 are titanium dioxide. Titanium dioxide and nylon fibers are melt-spun at high temperature, and after drawing, uniformly dispersed TiO2 inorganic particles 11 are formed on the surface of the nylon fibers. During the melting and drawing process, the agglomeration degree of the inorganic particles 11 is controlled between single particles and five aggregated particles. In this embodiment, the optimal single-particle distribution effect is preferred to obtain a better scattering coefficient. Figure 2 The diagram shows the internal microstructure of the first yarn 10, where the inorganic particles 11 are in a high-concentration single-particle dispersion state, and the nylon fiber first substrate material 12 is an organic polymer.

[0041] The bio-carbon organic particles are seaweed carbon or rice straw carbon, with seaweed carbon being preferred in this embodiment. Seaweed carbon is preferred because it is inexpensive and readily available, and is obtained by carbonizing seaweed. A small amount of seaweed carbon is added to the second substrate material, nylon polymer, and then high-temperature melt spinning is performed to achieve a hemispherical emissivity of over 94%.

[0042] like Figure 1 As shown, inorganic particles 11 are added to nylon fibers in the first yarn 10 to form a low-shrinkage nylon yarn; bio-carbon organic particles are added to nylon fibers in the second yarn 20 to form a high-shrinkage false-twist nylon yarn; the cooling yarn is formed by composite spinning of the first yarn 10 and the second yarn 20 to form a single composite fluffy yarn. Utilizing the difference in shrinkage rates between the first yarn 10 and the second yarn 20, after the fabric is formed, the first yarn 10 exhibits a fluffy state on the outer layer of the fabric, with numerous fluffy pore spaces. The highly concentrated and uniformly distributed inorganic particles 11 in the yarn can scatter most sunlight at a high level, forming a first scattering effect on sunlight reaching the surface of human skin; secondly, through the pores of the internal fluffy yarn, light scattering is increased, forming a second scattering effect. The second yarn 20, due to its high shrinkage state, forms a tight support at the bottom of the overall yarn and is closer to the skin layer, possessing a higher hemispherical emissivity, enabling more efficient heat dissipation through atmospheric windows, forming a radiative cooling effect.

[0043] A cooling fabric is woven from the above-mentioned cooling yarns. The cooling fabric uses nylon fibers with large differences in shrinkage rate as the base material, and forms a single cooling yarn through a composite coating spinning method. The cooling fabric made from the cooling yarn avoids the use of coating and film processes, ensuring the breathability of the fabric while retaining a high solar reflectivity and hemispherical emissivity of the atmospheric window to achieve the purpose of cooling.

[0044] This cooling fabric is finished with the addition of phase change microcapsule particles (PCM). PCM is a type of heat-regulating material that encapsulates a material called paraffin microencapsulation. When the temperature rises above a certain range, PCM changes from solid to liquid; when the temperature falls below a certain range, PCM changes from liquid to solid. Through these solid-liquid transitions, it absorbs, stores, and releases heat, thus maintaining a buffered temperature environment for the human body. Furthermore, selecting PCM materials with a temperature transition point closer to that of summer allows them to absorb heat when body temperature or the surrounding microclimate temperature rises, reducing the feeling of heat. This application provides two embodiments based on the method of adding phase change microcapsules.

[0045] Example 1, as Figure 3 As shown, the cooling fabric consists of two garment layers, including a first garment layer 1 and a second garment layer 2. The first garment layer 1 is formed by using the aforementioned cooling yarn with a 40G high-needle double-sided weave to create a double-layer fabric structure. When sunlight enters the space of the double-layer fabric structure, it produces a multi-layer scattering effect, forming a third scattering effect. The second garment layer 2 is located below the first garment layer 1 and serves as the bottom layer of the cooling fabric. The second garment layer 2 is made of nylon fiber with added phase change microcapsule particles 30, specifically, the phase change microcapsule particles 30 are paraffin-based phase change materials. In this embodiment, the phase change microcapsule particles 30 used are products of Tones of Cool Bio from Devon Corporation, USA. In this embodiment, the first garment layer 1 is made using a composite cooling yarn with high and low shrinkage differences, while the second garment layer 2 is made using nylon fiber as the base material and processed with a phase change microcapsule heat-absorbing cooling agent. In this embodiment, the first garment layer 1 and the second garment layer 2 are sewn together to form a double-layered fabric, which can be used to make double-layered summer clothing. This cooling fabric has a triple-scattering solar radiation cooling performance, as well as a combined cooling effect from the phase change microcapsule heat-absorbing layer and the cooling sensation of nylon contact. In this embodiment, the overall weight of the cooling fabric is below 180 GSM, which is the typical weight of a summer T-shirt. The cooling fabric of this embodiment can meet the actual fabric requirements of summer T-shirts or sun-protective clothing.

[0046] Example 2, as Figure 4As shown, the cooling fabric is a single garment layer, only one garment layer, which is the same as the first garment layer 1 in Example One; the phase change microcapsule particles 30 are added to the printing paste during the printing process stage to form a cooling print at the second yarn 20 in the first garment layer 1; wherein the first yarn 10 is a face yarn that reflects sunlight; the second yarn 20 is a ground yarn that emits heat externally; specifically, the phase change microcapsule particles 30 are paraffin phase change materials, and in this embodiment, the phase change microcapsule particles 30 used are products of TONES OF COOL BIO of the United States DEVON company; in this embodiment, the phase change microcapsule particles 30 are added to the printing paste to form a cooling print at the second yarn 20 on the back of the face fabric in the double-layer fabric structure, absorb heat, and form a single-layer fabric that can be made into a single-layer summer clothing; the fabric has a triple scattering sunlight radiation cooling performance, as well as a phase change microcapsule heat absorbing layer, a nylon contact cooling, and other multiple combinations of cooling effects; in this embodiment, the overall formed cooling fabric has a grammage of less than 180GSM, which can match the actual fabric requirements of T-shirts or sun protection clothes in summer.

[0047] The radiation, reflection, and cooling performance tests of Example One and Example Two and the blank sample were carried out, wherein the blank sample is an ordinary nylon yarn sample without adding inorganic particles and biocarbon organic particles in the base material, and Table 1 is the test result comparison.

[0048] Table 1 is the test result comparison of Example One and Example Two samples and the blank sample

[0049]

[0050] As can be seen from Table 1, Example One and Example Two have a higher direct emission ratio of sunlight than the blank sample; by high-temperature melt spinning of titanium dioxide and nylon fibers, the agglomeration degree of inorganic particles 11 is controlled during the melting and drawing process, and the best single particle distribution effect is preferred, which can obtain a better scattering coefficient.

[0051] Example One and Example Two have a higher hemispherical emissivity than the blank sample; by adding a small amount of seaweed carbon to the nylon fiber for high-temperature melt spinning, a hemispherical emissivity of more than 94% can be achieved.

[0052] At the same time, since Example One and Example Two both add phase change microcapsules, the microcapsule heat absorbing layer continuous cooling index test is carried out, and the test results are all 5-6℃.

[0053] Since Example One and Example Two both use nylon fibers as the base material, the nylon fiber has a high moisture regain, which can bring an instant contact cooling to the skin in summer, and the nylon base contact cooling test result is 0.18.

[0054] The refrigeration fabric uses nylon fibers with a large difference in shrinkage as a base material, forms a single refrigeration yarn through a composite coating spinning method, and uses the refrigeration yarn to make a refrigeration fabric. The refrigeration fabric avoids using a coating and film pasting process, ensures the air permeability of the fabric, and retains a high solar reflectance and a high hemispherical emissivity of the atmospheric window to achieve the purpose of cooling. At the same time, the phase change microcapsule finishing is combined to play a role in radiative cooling, and after cooling, the remaining heat is absorbed by the microcapsule to achieve a multiple refrigeration fabric with better effect.

[0055] The application provides a refrigeration yarn and fabric thereof, which uses a combination of two functional yarns to achieve a high solar reflectance and a high hemispherical emissivity of the atmospheric window, and meets the requirements of summer clothing.

[0056] The description of the above specification and examples is used to explain the protection scope of the application, but does not constitute a limitation on the protection scope of the application. Through the inspiration of the application or the above examples, those skilled in the art can obtain modifications, equivalent replacements or other improvements of the embodiments of the application or one part of the technical features by combining common knowledge, ordinary technical knowledge in the art and / or prior art, logical analysis, reasoning or limited experiments, which should be included in the protection scope of the application.

Claims

1. A refrigerating yarn, characterized by, It comprises: The first yarn (10) is fused and spun with inorganic particles (11) and a first base material (12), wherein the mass ratio of the inorganic particles (11) to the first base material (12) is between 5-12%; and The second yarn (20) is fused and spun with biological carbon organic particles or graphite and a second base material; wherein the mass ratio of the biological carbon organic particles or graphite to the second base material is between 2-3%; The inorganic particles (11) are titanium dioxide; the biological carbon organic particles are seaweed carbon or straw carbon; The refrigeration yarn is formed into a fluffy yarn by the composite covering spinning method of the first yarn (10) and the second yarn (20); the first yarn (10) is provided with a plurality of pore spaces and is located at the outer layer of the yarn; the second yarn (20) is located at the bottom of the yarn to form a support; the shrinkage rate of the first yarn (10) is 18-25% of the shrinkage rate of the second yarn (20).

2. A refrigeration yarn as claimed in claim 1, characterized in that The first base material (12) and the second base material are both nylon fibers.

3. A refrigerated fabric, which is two garment layers, comprising a first garment layer (1), characterized in that, The first garment layer (1) adopts a refrigeration yarn as claimed in claim 1 or 2 and adopts a 40G high-needle double-sided weaving method to form a double-layer fabric structure.

4. A fabric according to claim 3, wherein the fabric is a refrigerated fabric. The refrigeration fabric further comprises a second garment layer (2) located below the first garment layer (1) and serving as the bottom layer of the refrigeration fabric; the second garment layer (2) is made of nylon fibers and is processed and finished by adding phase change microcapsule particles (30).

5. A fabric according to claim 4, wherein the fabric is a refrigerated fabric. The phase change microcapsule particles (30) are paraffin-based phase change materials.

6. A refrigerating fabric, which is a single garment layer, comprising a first garment layer (1), characterized in that, The first garment layer (1) adopts a refrigeration yarn as claimed in claim 1 or 2 and adopts a 40G high-needle double-sided weaving method to form a double-layer fabric structure.

7. A fabric according to claim 6, wherein the fabric is a refrigerated fabric. The phase change microcapsule particles (30) are added to the printing paste in the printing process stage to form a cool feeling print at the second yarn (20) in the first garment layer (1); the first yarn (10) is the face yarn and the second yarn (20) is the ground yarn.

8. A fabric according to claim 7, wherein the fabric is a refrigerated fabric. The phase change microcapsule particles (30) are paraffin-based phase change materials.

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