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ESIn order to prevent ultraviolet rays from harming the skin, a sun umbrella with anti-ultraviolet function is usually the choice of people. There are many types of sun umbrellas. According to the shading rate of the fabric, the UV protection effect of the sun umbrella is also different. Today, the parasol supplier will introduce you how parasols are protected against ultraviolet rays.
The principle of sun umbrella UV protection
Since the 1920s, due to the massive use of fluorocarbon solvents and Freon, the ozone layer in the earth’s atmosphere has been severely destroyed, causing the ultraviolet rays reaching the earth’s surface to continue to increase. Ultraviolet rays are electromagnetic waves with a wavelength of 200-40 Onm. The area with a wavelength of 400-32 Onm is called UV-A; the area with a wavelength of 320-28 Onm is called UV-B; and the area with a wavelength of 280-200nm is called UV-C. UV-C has a short wavelength and is absorbed in the air and cannot reach the surface of the earth. Ultraviolet rays account for about 6% of sunlight, of which the proportion of UV-A is larger and the proportion of UV-B is smaller. UV-A penetrates the epidermal tissue, causing muscles to lose elasticity, rough skin, and wrinkles. UV-B is related to carcinogens. Therefore, it is necessary to effectively shield the short- and medium-wavelength parts of UV-B and UV-A.
Generally speaking, a moderate amount of ultraviolet radiation has a bactericidal effect and can promote the synthesis of vitamin D, which is beneficial to human health. However, under continuous exposure to the hot sun, the human skin will lose its resistance to burns, and erythema or blisters will appear. Excessive ultraviolet radiation can also induce skin diseases (such as dermatitis, xeroderma pigmentosum), and even skin cancer, promote the formation of cataracts and reduce the body's immune function. Data shows that for every 1% reduction in the ozone layer, the intensity of ultraviolet radiation will increase by 2%, and the possibility of skin cancer will increase by 3%. Therefore, in order to protect the human body from excessive ultraviolet radiation, the anti-ultraviolet radiation finishing of textiles is of urgency.
Anti-ultraviolet radiation finishing mechanism of textiles
The mechanism of anti-ultraviolet radiation finishing of textiles is to apply a substance that can reflect and, or strongly and selectively absorb, ultraviolet light on textiles, and can convert energy to release or consume energy with heat or other harmless low-energy radiation. The textile after applying these substances has no adverse effect on the wearability of the fabric and meets the requirements for use. Therefore, the anti-ultraviolet radiation finishing of textiles is similar to the light stability of polymers. However, light resistance is to protect polymer compounds from auto-oxidation caused by ultraviolet radiation, which leads to polymer degradation and changes in appearance and structural properties; while anti-ultraviolet radiation finishing is to protect the human body from damage caused by excessive ultraviolet radiation.
In terms of optical principles, when light hits an object, part of it is reflected on the surface, part is absorbed by the object, and the rest is transmitted through the object. However, the fabric that has been treated with anti-ultraviolet radiation, the light hits the fabric, and a part of it passes through the fabric through the gaps in the fabric. The ultraviolet shielding agent on the fabric either reflects ultraviolet rays or selectively absorbs and converts its energy into low energy and releases it. As a result, the ultraviolet rays are shielded.
In order to prevent ultraviolet rays from harming the skin, a sun umbrella with anti-ultraviolet function is usually the choice of people. There are many types of sun umbrellas. According to the shading rate of the fabric, the UV protection effect of the sun umbrella is also different. Today, the parasol supplier will introduce you how parasols are protected against ultraviolet rays.
The principle of sun umbrella UV protection
Since the 1920s, due to the extensive use of fluorocarbon solvents and freons, the ozone layer in the earth’s atmosphere has been severely destroyed, causing the ultraviolet rays reaching the earth’s surface to continue to increase. Ultraviolet rays are electromagnetic waves with a wavelength of 200-40 Onm. The area with a wavelength of 400-32 Onm is called UV-A; the area with a wavelength of 320-28 Onm is called UV-B; and the area with a wavelength of 280-200nm is called UV-C. UV-C has a short wavelength and is absorbed in the air and cannot reach the surface of the earth. Ultraviolet rays account for about 6% of sunlight, of which the proportion of UV-A is larger and the proportion of UV-B is smaller. UV-A penetrates the epidermal tissue, causing muscles to lose elasticity, rough skin, and wrinkles. UV-B is related to carcinogens. Therefore, it is necessary to effectively shield the short- and medium-wavelength parts of UV-B and UV-A.
Generally speaking, a moderate amount of ultraviolet radiation has a bactericidal effect and can promote the synthesis of vitamin D, which is beneficial to human health. However, under continuous exposure to the hot sun, the human skin will lose its resistance to burns, and erythema or blisters will appear. Excessive ultraviolet radiation can also induce skin diseases (such as dermatitis, xeroderma pigmentosum), and even skin cancer, promote the formation of cataracts and reduce the body's immune function. Data shows that for every 1% reduction in the ozone layer, the intensity of ultraviolet radiation will increase by 2%, and the possibility of skin cancer will increase by 3%. Therefore, in order to protect the human body from excessive ultraviolet radiation, the anti-ultraviolet radiation finishing of textiles is of urgency.
Anti-ultraviolet radiation finishing mechanism of textiles
The mechanism of anti-ultraviolet radiation finishing of textiles is to apply a substance that can reflect and, or strongly and selectively absorb, ultraviolet light on textiles, and can convert energy to release or consume energy with heat or other harmless low-energy radiation. The textile after applying these substances has no adverse effect on the wearability of the fabric and meets the requirements for use. Therefore, the anti-ultraviolet radiation finishing of textiles is similar to the light stability of polymers. However, light resistance is to protect polymer compounds from auto-oxidation caused by ultraviolet radiation, which leads to polymer degradation and changes in appearance and structural properties; while anti-ultraviolet radiation finishing is to protect the human body from damage caused by excessive ultraviolet radiation.
In terms of optical principles, when light hits an object, part of it is reflected on the surface, part is absorbed by the object, and the rest is transmitted through the object. However, the fabric that has been treated with anti-ultraviolet radiation, the light hits the fabric, and a part of it passes through the fabric through the gaps in the fabric. The ultraviolet shielding agent on the fabric either reflects ultraviolet rays or selectively absorbs and converts its energy into low energy and releases it. As a result, the ultraviolet rays are shielded.
The principle of sun umbrella UV protection
Since the 1920s, due to the massive use of fluorocarbon solvents and Freon, the ozone layer in the earth’s atmosphere has been severely destroyed, causing the ultraviolet rays reaching the earth’s surface to continue to increase. Ultraviolet rays are electromagnetic waves with a wavelength of 200-40 Onm. The area with a wavelength of 400-32 Onm is called UV-A; the area with a wavelength of 320-28 Onm is called UV-B; and the area with a wavelength of 280-200nm is called UV-C. UV-C has a short wavelength and is absorbed in the air and cannot reach the surface of the earth. Ultraviolet rays account for about 6% of sunlight, of which the proportion of UV-A is larger and the proportion of UV-B is smaller. UV-A penetrates the epidermal tissue, causing muscles to lose elasticity, rough skin, and wrinkles. UV-B is related to carcinogens. Therefore, it is necessary to effectively shield the short- and medium-wavelength parts of UV-B and UV-A.
Generally speaking, a moderate amount of ultraviolet radiation has a bactericidal effect and can promote the synthesis of vitamin D, which is beneficial to human health. However, under continuous exposure to the hot sun, the human skin will lose its resistance to burns, and erythema or blisters will appear. Excessive ultraviolet radiation can also induce skin diseases (such as dermatitis, xeroderma pigmentosum), and even skin cancer, promote the formation of cataracts and reduce the body's immune function. Data shows that for every 1% reduction in the ozone layer, the intensity of ultraviolet radiation will increase by 2%, and the possibility of skin cancer will increase by 3%. Therefore, in order to protect the human body from excessive ultraviolet radiation, the anti-ultraviolet radiation finishing of textiles is of urgency.
Anti-ultraviolet radiation finishing mechanism of textiles
The mechanism of anti-ultraviolet radiation finishing of textiles is to apply a substance that can reflect and, or strongly and selectively absorb, ultraviolet light on textiles, and can convert energy to release or consume energy with heat or other harmless low-energy radiation. The textile after applying these substances has no adverse effect on the wearability of the fabric and meets the requirements for use. Therefore, the anti-ultraviolet radiation finishing of textiles is similar to the light stability of polymers. However, light resistance is to protect polymer compounds from auto-oxidation caused by ultraviolet radiation, which leads to polymer degradation and changes in appearance and structural properties; while anti-ultraviolet radiation finishing is to protect the human body from damage caused by excessive ultraviolet radiation.
In terms of optical principles, when light hits an object, part of it is reflected on the surface, part is absorbed by the object, and the rest is transmitted through the object. However, the fabric that has been treated with anti-ultraviolet radiation, the light hits the fabric, and a part of it passes through the fabric through the gaps in the fabric. The ultraviolet shielding agent on the fabric either reflects ultraviolet rays or selectively absorbs and converts its energy into low energy and releases it. As a result, the ultraviolet rays are shielded.
In order to prevent ultraviolet rays from harming the skin, a sun umbrella with anti-ultraviolet function is usually the choice of people. There are many types of sun umbrellas. According to the shading rate of the fabric, the UV protection effect of the sun umbrella is also different. Today, the parasol supplier will introduce you how parasols are protected against ultraviolet rays.
The principle of sun umbrella UV protection
Since the 1920s, due to the extensive use of fluorocarbon solvents and freons, the ozone layer in the earth’s atmosphere has been severely destroyed, causing the ultraviolet rays reaching the earth’s surface to continue to increase. Ultraviolet rays are electromagnetic waves with a wavelength of 200-40 Onm. The area with a wavelength of 400-32 Onm is called UV-A; the area with a wavelength of 320-28 Onm is called UV-B; and the area with a wavelength of 280-200nm is called UV-C. UV-C has a short wavelength and is absorbed in the air and cannot reach the surface of the earth. Ultraviolet rays account for about 6% of sunlight, of which the proportion of UV-A is larger and the proportion of UV-B is smaller. UV-A penetrates the epidermal tissue, causing muscles to lose elasticity, rough skin, and wrinkles. UV-B is related to carcinogens. Therefore, it is necessary to effectively shield the short- and medium-wavelength parts of UV-B and UV-A.
Generally speaking, a moderate amount of ultraviolet radiation has a bactericidal effect and can promote the synthesis of vitamin D, which is beneficial to human health. However, under continuous exposure to the hot sun, the human skin will lose its resistance to burns, and erythema or blisters will appear. Excessive ultraviolet radiation can also induce skin diseases (such as dermatitis, xeroderma pigmentosum), and even skin cancer, promote the formation of cataracts and reduce the body's immune function. Data shows that for every 1% reduction in the ozone layer, the intensity of ultraviolet radiation will increase by 2%, and the possibility of skin cancer will increase by 3%. Therefore, in order to protect the human body from excessive ultraviolet radiation, the anti-ultraviolet radiation finishing of textiles is of urgency.
Anti-ultraviolet radiation finishing mechanism of textiles
The mechanism of anti-ultraviolet radiation finishing of textiles is to apply a substance that can reflect and, or strongly and selectively absorb, ultraviolet light on textiles, and can convert energy to release or consume energy with heat or other harmless low-energy radiation. The textile after applying these substances has no adverse effect on the wearability of the fabric and meets the requirements for use. Therefore, the anti-ultraviolet radiation finishing of textiles is similar to the light stability of polymers. However, light resistance is to protect polymer compounds from auto-oxidation caused by ultraviolet radiation, which leads to polymer degradation and changes in appearance and structural properties; while anti-ultraviolet radiation finishing is to protect the human body from damage caused by excessive ultraviolet radiation.
In terms of optical principles, when light hits an object, part of it is reflected on the surface, part is absorbed by the object, and the rest is transmitted through the object. However, the fabric that has been treated with anti-ultraviolet radiation, the light hits the fabric, and a part of it passes through the fabric through the gaps in the fabric. The ultraviolet shielding agent on the fabric either reflects ultraviolet rays or selectively absorbs and converts its energy into low energy and releases it. As a result, the ultraviolet rays are shielded.
