Yarn capable of reflecting heat energy of high sunlight

Abstract

The utility model discloses a high sunlight heat energy reflecting yarn in the field of textile yarns, which comprises a yarn body, the circumference of the yarn body protrudes outwards to form a plurality of scattering convex blocks, the scattering convex blocks are arranged at intervals, a scattering groove is formed between every two adjacent scattering convex blocks, and the scattering convex blocks are arranged in the scattering groove. The width of the scattering protruding blocks and the width of the scattering grooves are both distributed within the energy wave band of sunlight. The utility model solves the problem of insufficient heat shielding performance of the existing yarn, and can reduce the direct penetration or absorption of light into the yarn, namely, the yarn can increase the light scattering effect on the basis of the original light reflection effect of the yarn under the irradiation of sunlight, more light is blocked outside the yarn, and the yarn is more attractive in appearance. Therefore, the effects of heat shielding and sun protection are achieved, and human body temperature rise caused by solar heat energy can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of textile yarns, in particular to a yarn with high solar heat energy reflection. Background Art

[0002] As global climate change becomes increasingly pronounced, high summer temperatures are becoming a significant factor impacting people's daily lives. Prolonged exposure to intense sunlight can not only damage the skin but also cause health problems such as overheating. Therefore, developing functional textiles that effectively protect against UV damage and reduce perceived temperature has become a key research focus in the industry.

[0003] Traditionally, to achieve the purpose of sun protection and cooling, the industry has added titanium dioxide to yarns to enhance their ability to reflect sunlight, thus imparting a certain degree of cooling and sun protection to the resulting fabrics. However, in actual use, due to the simple structure of conventional yarns, a significant amount of light can still penetrate the yarns through reflection, causing a rise in perceived temperature. Furthermore, textile materials such as titanium dioxide, polyester, and spandex have a strong ability to absorb infrared radiation from the human body. This prevents infrared radiation from directly penetrating the fabric, creating a heat cycle within the fabric and affecting heat dissipation. Therefore, the heat-shielding performance of existing yarns still does not meet demand.

[0004] The above defects urgently need to be solved. Utility Model Content

[0005] In order to solve the problem of insufficient heat shielding performance of existing yarns, the utility model provides a high solar heat energy reflecting yarn.

[0006] The technical solution of this utility model is as follows:

[0007] A high-solar-heat-energy-reflecting yarn comprises a yarn body, wherein the circumferential outward extension of the yarn body forms a plurality of scattering protrusions, the plurality of scattering protrusions are arranged at intervals, and a scattering groove is formed between two adjacent scattering protrusions, and the widths of the scattering protrusions and the scattering grooves are both distributed within the energy band of sunlight.

[0008] According to the above solution of the present invention, the width of the scattering protrusions and the width of the scattering grooves are both 400 nm to 2500 nm.

[0009] According to the above solution of the present invention, the width of the scattering protrusions and the width of the scattering grooves are continuously distributed according to an arithmetic sequence with a tolerance of 100 nm.

[0010] According to the above solution of the present invention, the widths of the plurality of scattering protrusions and the widths of the plurality of scattering grooves are not equal, and are randomly distributed in the circumferential direction of the yarn body.

[0011] According to the above solution of the present invention, each of the scattering bumps has two opposite side walls, and the side walls of all the scattering bumps have the same height, which is 280 nm to 400 nm.

[0012] According to the above-mentioned solution of the present invention, the yarn body is filled with zinc oxide.

[0013] According to the above solution of the present invention, the material of the yarn body is nylon, the number of the scattering protrusions is four, the distance between the two scattering protrusions located at opposite corners is 2.5 μm, and the diameter of the yarn body is 1.9 μm.

[0014] According to the above solution of the present invention, the material of the yarn body is polyethylene, the number of the scattering protrusions is five, the distance between the two scattering protrusions located at opposite corners is 9.1 μm, and the diameter of the yarn body is 8.5 μm.

[0015] According to the above solution of the present invention, the material of the yarn body is polyethylene, the number of the scattering protrusions is six, the distance between two diagonally located scattering protrusions is 10.6 μm, and the diameter of the yarn body is 9.88 μm.

[0016] According to the above solution of the present invention, the cross-section of the yarn body is circular, and the cross-section of the scattering protrusion is fan-shaped.

[0017] The utility model according to the above solution has the following beneficial effects:

[0018] In the above-mentioned high solar heat energy reflective yarn, the width of the scattering protrusions and the width of the scattering grooves on the yarn body are distributed within the energy band of sunlight. According to Mie (light scattering) theory, when the energy band of sunlight matches the width of the scattering protrusions or the width of the scattering grooves, the light can be scattered at the corresponding scattering protrusions or scattering grooves, reducing the direct penetration or absorption of light into the interior of the yarn. That is, the yarn can increase the light scattering effect on the original light reflection effect of the yarn under the irradiation of sunlight, and block more light outside the yarn, thereby achieving the effect of heat shielding and sun protection, and thus reducing the temperature rise of the human body caused by solar heat energy.

[0019] In addition, the nylon material and polyethylene material used in the yarn body of the utility model have high penetration of human infrared, and the zinc oxide filled in the yarn body not only has a high reflective effect on light, but also has a high absorption effect on unreflected ultraviolet rays, preventing ultraviolet rays from damaging the skin. In addition, zinc oxide has extremely low absorption of human infrared rays and strong heat conduction ability, which can enable human infrared rays to effectively penetrate the fabric and exchange heat with the outside world, achieving the effect of rapid heat dissipation and cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the structural diagrams of the first embodiment of the present utility model;

[0021] Figure 2 This is the second structural diagram of the first embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram showing the distribution of the width values ​​of the scattering protrusions and the width values ​​of the scattering grooves according to the first embodiment of the present invention;

[0023] Figure 4 This is a schematic structural diagram of the second embodiment of the present utility model;

[0024] Figure 5 Schematic diagram of the distribution of width values ​​of the scattering protrusions and the scattering grooves in the second embodiment of the present invention;

[0025] Figure 6 This is a schematic structural diagram of the third embodiment of the present invention;

[0026] Figure 7 Schematic diagram of the distribution of the width values ​​of the scattering protrusions and the width values ​​of the scattering grooves in the third embodiment of the present invention.

[0027] In the figure, 1. yarn body; 2. scattering protrusion; 21. first protrusion; 22. second protrusion; 23. third protrusion; 24. fourth protrusion; 25. fifth protrusion; 26. sixth protrusion; 3. scattering groove; 31. first groove; 32. second groove; 33. third groove; 34. fourth groove; 35. fifth groove; 36. sixth groove. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] Example 1

[0030] like Figure 1 As shown, the utility model provides a high solar heat energy reflective yarn, including a yarn body 1, the circumference of the yarn body 1 protrudes outward to form four scattering protrusions 2, the four scattering protrusions 2 are arranged at intervals, and a scattering groove 3 is formed between two adjacent scattering protrusions 2, and the width of the scattering protrusion 2 and the width of the scattering groove 3 are both distributed within the energy band of sunlight.

[0031] According to Mie (light scattering) theory, when the energy band of sunlight matches the width of the scattering protrusion 2 or the width of the scattering groove 3, the light can be scattered at the corresponding scattering protrusion 2 or scattering groove 3, reducing the direct penetration or absorption of light into the yarn. That is, the yarn can increase the light scattering effect on the original light reflection effect of the yarn under the irradiation of sunlight, blocking more light outside the yarn, thereby achieving the effect of heat shielding and sun protection, and thus reducing the temperature rise of the human body caused by solar heat energy.

[0032] For example, the yarn in the prior art can reflect 70% of the light, and 30% of the light passes through the yarn. However, the present technical solution, on the basis of reflecting 70% of the light, also uses the light scattering effect to reduce the light passing through the yarn, so that the light penetrating the yarn is far less than 30%.

[0033] As is known to all, Mie (light scattering) theory states that when incident light hits the surface of a medium, light scattering occurs when the wavelength of the light is close to or equal to the diameter of the medium particles.

[0034] like Figure 1 、 Figure 2 As shown in the embodiment, the cross-sectional shape of the yarn body 1 is circular, and the cross-sectional shape of the scattering protrusion 2 is fan-shaped, so the cross-sectional shape of the yarn of the present invention is gear-shaped. Of course, in actual design, the cross-sectional shape of the yarn body 1 and the cross-sectional shape of the scattering protrusion 2 can be designed according to actual needs.

[0035] like Figure 1 As shown, it should be noted that the width of the fan-shaped scattering protrusion 2 refers to the arc length L1, and the width of the scattering groove 3 refers to the groove bottom arc length L2.

[0036] like Figure 2 、 Figure 3As shown, in this embodiment, the width of the scattering protrusions 2 and the width of the scattering grooves 3 are both 400nm to 2500nm, that is, the width of the scattering protrusions 2 and the width of the scattering grooves 3 are both distributed within the main energy band of sunlight. In addition, the width of the scattering protrusions 2 and the width of the scattering grooves 3 can be designed to be within the range of 400nm to 1100nm, and continuously distributed according to the law of an arithmetic sequence with a tolerance of 100nm. Specifically, the four scattering bumps 2 are divided into a first bump 21, a second bump 22, a third bump 23 and a fourth bump 24. The four scattering bumps 2 are arranged at intervals to form four scattering grooves 3. The four scattering grooves 3 are divided into a first groove 31, a second groove 32, a third groove 33 and a fourth groove 34. The first groove 31 is located between the first bump 21 and the second bump 22, the second groove 32 is located between the second bump 22 and the third bump 23, the third groove 33 is located between the third bump 23 and the fourth bump 24, and the fourth groove 34 is located between the fourth bump 24 and the first bump 21. The width of the first bump 21 is 400nm, the width of the first groove 31 is 500nm, the width of the second bump 22 is 600nm, the width of the second groove 32 is 700nm, the width of the third bump 23 is 800nm, the width of the third groove 33 is 900nm, the width of the fourth bump 24 is 1000nm, and the width of the fourth groove 34 is 1100nm.

[0037] When sunlight shines on the fabric, light with an energy wavelength of 400nm is scattered on the first bump 21, light with an energy wavelength of 500nm is scattered on the first groove 31, light with an energy wavelength of 600nm is scattered on the second bump 22, light with an energy wavelength of 700nm is scattered on the second groove 32, light with an energy wavelength of 800nm ​​is scattered on the third bump 23, light with an energy wavelength of 900nm is scattered on the third groove 33, light with an energy wavelength of 1000nm is scattered on the fourth bump 24, and light with an energy wavelength of 1100nm is scattered on the fourth groove 34.

[0038] When the fabric is produced, multiple yarns are required for weaving. Due to the randomness of the yarns during the weaving process, the four scattering bumps 2 will be randomly distributed on the surface of the fabric, and light with energy wavelengths of 400nm, 500nm, 600nm, 700nm, 800nm, 900nm, 1000nm, and 1100nm will be scattered, thereby reducing the light that penetrates or is absorbed into the yarn and reducing the temperature rise of the human body caused by solar heat energy.

[0039] like Figure 1As shown, in this embodiment, each scattering protrusion 2 has two opposite side walls, and the side wall height L3 of all scattering protrusions 2 is equal, and the side wall height L3 is 280nm~400nm. Preferably, the side wall height L3 is set to 300nm to produce a significant scattering effect on the ultraviolet UVB band of about 300nm. Because the ultraviolet damage caused by sunlight to the human body is mainly in the ultraviolet UVB band, the design of a side wall height of 300nm can give the yarn an excellent ultraviolet protection effect. This technical solution cleverly utilizes the two side walls of the scattering protrusion 2, and multiple side walls can provide design positions of the required size (about 300nm), thereby further increasing the ultraviolet protection effect of the yarn without the need to add additional ultraviolet reflectors. Of course, in actual design, the height of the scattering protrusion 2 can be designed according to actual needs.

[0040] In this embodiment, the yarn body 1 is filled with 3% zinc oxide, which can further enhance the yarn's blocking effect on ultraviolet rays, thereby enabling the yarn to achieve a sun protection effect. At the same time, zinc oxide has extremely low absorption of infrared rays from the human body and strong heat conduction ability, which can enable the human body's infrared rays to effectively penetrate the fabric and exchange heat with the outside world, achieving the effect of rapid heat dissipation and cooling, thereby improving wearing comfort and reducing the feeling of stuffiness and discomfort.

[0041] like Figure 1 As shown, in this embodiment, the yarn body 1 is made of nylon, which has a good penetrating effect on human infrared (about 9μm), making the fabric have an excellent effect on dissipating human heat energy. In addition, the thermal conductivity of nylon is high. When in contact with it, it not only has an excellent cooling effect, but also can quickly conduct human heat to the fabric for dissipation, thereby improving the heat dissipation effect on the human body. At the same time, the nylon material used in the yarn body 1 has a high penetrating effect on human infrared, and the zinc oxide filled in the yarn body 1 not only has a high reflective effect on light, but also has a high absorption effect on unreflected ultraviolet light, preventing ultraviolet damage to the skin.

[0042] In this embodiment, the distance L4 between the two diagonally located scattering protrusions 2 is 2.5 μm, and the diameter D of the yarn body 1 is 1.9 μm. Of course, in actual design, the distance L4 between the two diagonally located scattering protrusions 2 and the diameter D of the yarn body 1 can be designed according to actual needs to meet the requirements of the yarn process.

[0043] Example 2

[0044] like Figure 4 、 Figure 5As shown, different from Example 1, the yarn body 1 of this embodiment protrudes outward in the circumferential direction to form five scattering protrusions 2, and the five scattering protrusions 2 are arranged at intervals to form five scattering grooves 3. The width values ​​of the multiple scattering protrusions 2 are not equal to the width values ​​of the multiple scattering grooves 3, and are randomly distributed in the circumferential direction of the yarn body 1, and the width of the scattering protrusions 2 and the width of the scattering grooves 3 are both in the range of 400nm to 1300nm.

[0045] like Figure 4 、 Figure 5 As shown, specifically, the five scattering bumps 2 are divided into a first bump 21, a second bump 22, a third bump 23, a fourth bump 24 and a fifth bump 25, and the five scattering bumps 2 are arranged at intervals to form five scattering grooves 3, and the five scattering grooves 3 are divided into a first groove 31, a second groove 32, a third groove 33, a fourth groove 34 and a fifth groove 35. The first groove 31 is located between the first bump 21 and the second bump 22, the second groove 32 is located between the second bump 22 and the third bump 23, the third groove 33 is located between the third bump 23 and the fourth bump 24, the fourth groove 34 is located between the fourth bump 24 and the fifth bump 25, and the fifth groove 35 is located between the fifth bump 25 and the first bump 21. The width of the first bump 21 is 400 nm, the width of the first groove 31 is 600 nm, the width of the second bump 22 is 800 nm, the width of the second groove 32 is 500 nm, the width of the third bump 23 is 700 nm, the width of the third groove 33 is 900 nm, the width of the fourth bump 24 is 1200 nm, the width of the fourth groove 34 is 1000 nm, the width of the fifth bump 25 is 1100 nm, and the width of the fifth groove 35 is 1300 nm. Of course, the widths of the scattering bumps 2 and the scattering grooves 3 can also be designed to be within the range of 400 nm to 1300 nm, and to be continuously distributed according to the law of an arithmetic sequence with a tolerance of 100 nm. In actual design, the distribution of the widths of the scattering bumps 2 and the scattering grooves 3 can be designed according to actual needs.

[0046] When sunlight shines on the fabric, light with an energy wavelength of 400nm is scattered on the first bump 21, light with an energy wavelength of 600nm is scattered on the first groove 31, light with an energy wavelength of 800nm ​​is scattered on the second bump 22, light with an energy wavelength of 500nm is scattered on the second groove 32, light with an energy wavelength of 700nm is scattered on the third bump 23, light with an energy wavelength of 900nm is scattered on the third groove 33, light with an energy wavelength of 1200nm is scattered on the fourth bump 24, light with an energy wavelength of 1000nm is scattered on the fourth groove 34, light with an energy wavelength of 1100nm is scattered on the fifth bump 25, and light with an energy wavelength of 1300nm is scattered on the fifth groove 35.

[0047] When the fabric is produced, multiple yarns are required for weaving. Due to the randomness of the yarns during the weaving process, the four scattering protrusions 2 will be randomly distributed on the surface of the fabric, and light with energy wavelengths of 400nm, 500nm, 600nm, 700nm, 800nm, 900nm, 1000nm, 1100nm, 1200nm, and 1300nm will be scattered, thereby reducing the light that penetrates or is absorbed into the yarn and reducing the temperature rise of the human body caused by solar heat energy.

[0048] In the present embodiment, each scattering protrusion 2 has two opposite side walls, and the side wall height L3 of all scattering protrusions 2 is equal, and the side wall height L3 is 280nm~400nm. Preferably, the side wall height L3 is set to 300nm to produce a significant scattering effect on the ultraviolet UVB band of about 300nm. Because the ultraviolet damage caused by sunlight to the human body is mainly in the ultraviolet UVB band, the design of a side wall height of 300nm can give the yarn an excellent ultraviolet protection effect. This technical solution cleverly utilizes the two side walls of the scattering protrusion 2, and multiple side walls can provide a design position of the required size (about 300nm), thereby further increasing the ultraviolet protection effect of the yarn without the need to add additional ultraviolet reflectors. Of course, in actual design, the height of the scattering protrusion 2 can be designed according to actual needs.

[0049] In this embodiment, the yarn body 1 is made of polyethylene, which has excellent penetration of human infrared radiation (approximately 9 μm), resulting in the fabric being excellent at dissipating heat from the human body. Furthermore, polyethylene has a high thermal conductivity, providing an excellent cooling effect upon contact. It can also rapidly conduct heat from the human body to the fabric for dissipation, improving the heat dissipation effect. Furthermore, the polyethylene material used in the yarn body 1 has high penetration of human infrared radiation, while the zinc oxide filled in the yarn body 1 not only has a high reflective effect on light but also has a high absorption effect on unreflected ultraviolet radiation, preventing ultraviolet radiation from damaging the skin.

[0050] In this embodiment, the distance L4 between the two diagonally located scattering protrusions 2 is 9.1 μm, and the diameter of the yarn body 1 is 8.5 μm. Of course, in actual design, the distance L4 between the two diagonally located scattering protrusions 2 and the diameter D of the yarn body 1 can be designed according to actual needs to meet the requirements of the yarn process.

[0051] Example 3

[0052] like Figure 6 、 Figure 7 As shown, unlike Example 2, the yarn body 1 of this embodiment protrudes outward in the circumferential direction to form six scattering protrusions 2, and the six scattering protrusions 2 are arranged at intervals to form six scattering grooves 3. The width of the scattering protrusions 2 and the width of the scattering grooves 3 are both in the range of 300nm to 1400nm, and are continuously distributed according to the law of an arithmetic sequence with a tolerance of 100nm.

[0053] like Figure 6 、 Figure 7As shown, specifically, the six scattering bumps 2 are divided into a first bump 21, a second bump 22, a third bump 23, a fourth bump 24, a fifth bump 25 and a sixth bump 26, and the six scattering bumps 2 are arranged at intervals to form six scattering grooves 3, and the six scattering grooves 3 are divided into a first groove 31, a second groove 32, a third groove 33, a fourth groove 34, a fifth groove 35 and a sixth groove 36. The first groove 31 is located between the first bump 21 and the second bump 22, the second groove 32 is located between the second bump 22 and the third bump 23, the third groove 33 is located between the third bump 23 and the fourth bump 24, the fourth groove 34 is located between the fourth bump 24 and the fifth bump 25, the fifth groove 35 is located between the fifth bump 25 and the sixth bump 26, and the sixth groove 36 is located between the sixth bump 26 and the first bump 21. The width of the first protrusion 21 is 300nm, the width of the first groove 31 is 400nm, the width of the second protrusion 22 is 500nm, the width of the second groove 32 is 600nm, the width of the third protrusion 23 is 700nm, the width of the third groove 33 is 800nm, the width of the fourth protrusion 24 is 900nm, the width of the fourth groove 34 is 1000nm, the width of the fifth protrusion 25 is 1100nm, the width of the fifth groove 35 is 1200nm, the width of the sixth protrusion 26 is 1300nm, and the width of the sixth groove 36 is 1400nm. Of course, it is also possible to design the width values ​​of the multiple scattering protrusions 2 to be unequal to the width values ​​of the multiple scattering grooves 3, and to randomly distribute them in the circumferential direction of the yarn body 1. In actual design, the distribution of the widths of the scattering protrusions 2 and the widths of the scattering grooves 3 can be designed according to actual needs.

[0054] When sunlight shines on the fabric, light with an energy wavelength of 300nm is scattered on the first bump 21, light with an energy wavelength of 400nm is scattered on the first groove 31, light with an energy wavelength of 500nm is scattered on the second bump 22, light with an energy wavelength of 600nm is scattered on the second groove 32, light with an energy wavelength of 700nm is scattered on the third bump 23, light with an energy wavelength of 800nm ​​is scattered on the third groove 33, light with an energy wavelength of 900nm is scattered on the fourth bump 24, light with an energy wavelength of 1000nm is scattered on the fourth groove 34, light with an energy wavelength of 1100nm is scattered on the fifth bump 25, light with an energy wavelength of 1200nm is scattered on the fifth groove 35, light with an energy wavelength of 1300nm is scattered on the sixth bump 26, and light with an energy wavelength of 1400nm is scattered on the sixth groove 36.

[0055] When the fabric is produced, multiple yarns are required for weaving. Due to the randomness of the yarns during the weaving process, the four scattering protrusions 2 will be randomly distributed on the surface of the fabric, and light with energy wavelengths of 300nm, 400nm, 500nm, 600nm, 700nm, 800nm, 900nm, 1000nm, 1100nm, 1200nm, 1300nm, and 1400nm will be scattered, thereby reducing the light that penetrates or is absorbed into the yarn and reducing the temperature rise of the human body caused by solar heat energy.

[0056] In this embodiment, each scattering protrusion 2 has two opposite side walls, and the side wall heights of all scattering protrusions 2 are equal. The height L3 of the side wall is 280nm to 400nm. Preferably, the height L3 of the side wall is set to 360nm. Since the ultraviolet damage caused by sunlight to the human body is mainly in the ultraviolet UVA band and the ultraviolet UVB band, the design of the side wall height L3 being 360nm can give the yarn excellent ultraviolet UVA band protection effect, and the protrusion already contains a size of 300nm, which can have a certain protection effect on the ultraviolet UVB band. This technical solution cleverly utilizes the two side walls of the scattering protrusion 2, and multiple side walls can provide a design position of the required size (about 360nm), thereby further increasing the ultraviolet protection effect of the yarn without the need to add additional ultraviolet reflectors. Of course, in actual design, the height of the scattering protrusion 2 can be designed according to actual needs.

[0057] In this embodiment, the yarn body 1 is made of polyethylene, which has excellent penetration of human infrared radiation (approximately 9 μm), resulting in the fabric being excellent at dissipating heat from the human body. Furthermore, polyethylene has a high thermal conductivity, providing an excellent cooling effect upon contact. It can also rapidly conduct heat from the human body to the fabric for dissipation, improving the heat dissipation effect. Furthermore, the polyethylene material used in the yarn body 1 has high penetration of human infrared radiation, while the zinc oxide filled in the yarn body 1 not only has a high reflective effect on light but also has a high absorption effect on unreflected ultraviolet radiation, preventing ultraviolet radiation from damaging the skin.

[0058] In this embodiment, in addition, the spacing L4 between the two diagonally located scattering protrusions 2 is 10.6 μm, and the diameter D of the yarn body 1 is 9.88 μm. Of course, in actual design, the spacing L4 between the two diagonally located scattering protrusions 2 and the diameter D of the yarn body 1 can be designed according to actual needs to meet the requirements of the yarn process.

[0059] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

[0060] The above is an exemplary description of the present utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the present utility model patent is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present utility model patent, or the concept and technical solution of the present utility model patent are directly applied to other occasions without improvement, they are all within the scope of protection of the present utility model.

Claims

1. A high solar heat reflective yarn, characterized in that: The yarn body includes a yarn body, which protrudes outward in the circumferential direction to form a plurality of scattering protrusions. The plurality of scattering protrusions are arranged at intervals, and a scattering groove is formed between two adjacent scattering protrusions. The width of the scattering protrusion and the width of the scattering groove are both distributed within the energy band of sunlight.

2. The high solar heat reflective yarn according to claim 1, characterized in that: The width of the scattering protrusion and the width of the scattering groove are both 400nm~2500nm.

3. The high solar heat reflective yarn according to claim 2, characterized in that: The widths of the scattering protrusions and the widths of the scattering grooves are continuously distributed according to an arithmetic sequence with a tolerance of 100 nm.

4. The high solar heat reflective yarn according to claim 2, characterized in that: The widths of the plurality of scattering protrusions are not equal to the widths of the plurality of scattering grooves, and are randomly distributed in the circumferential direction of the yarn body.

5. The high solar heat reflective yarn according to claim 1, characterized in that: Each of the scattering bumps has two opposite side walls, and the side walls of all the scattering bumps have the same height, which is 280 nm to 400 nm.

6. The high solar heat reflective yarn according to claim 1, characterized in that: The yarn body is filled with zinc oxide.

7. The high solar heat reflective yarn according to claim 1, characterized in that: The material of the yarn body is nylon, the number of the scattering protrusions is four, the distance between two diagonally located scattering protrusions is 2.5 μm, and the diameter of the yarn body is 1.9 μm.

8. The high solar heat reflective yarn according to claim 1, characterized in that: The material of the yarn body is polyethylene, the number of the scattering protrusions is five, the distance between two diagonally located scattering protrusions is 9.1 μm, and the diameter of the yarn body is 8.5 μm.

9. The high solar heat reflective yarn according to claim 1, characterized in that: The material of the yarn body is polyethylene, the number of the scattering protrusions is six, the distance between two diagonally located scattering protrusions is 10.6 μm, and the diameter of the yarn body is 9.88 μm.

10. The high solar heat reflective yarn according to claim 1, characterized in that: The cross-section of the yarn body is circular, and the cross-section of the scattering protrusion is fan-shaped.

Images