Fabric Application: Focus On The Relationship Between Light And Color In Textile Application

The universe itself is dark, but around luminous objects (such as the sun, moon, stars, etc.), we can see their light and color. This is because these illuminants reflect and scatter light of other colors, so that we can see their colors.

In the dark background of the universe, we cannot actually see light of any color, because no light can penetrate the dark background of the universe.

However, when the illuminant emits color, these light will be scattered and reflected, making us see their color.

For example, the color of the sun is one of the main sources that we can see it. The light emitted by the sun contains many colors, including yellow, orange, red, purple, etc. These colors are reflected and scattered in the universe, enabling us to see the color of the sun.

Therefore, we can see that the universe is dark, but when our eyes focus on certain luminous objects, we can see their light and color.

The color of an object is produced by the reflection and refraction of light. When the light shines on the surface of different materials, it will reflect, refract or discount, thus changing the direction and frequency. These changes will lead to changes in the energy and wavelength of light, thus making objects appear different colors.

When there is texture or roughness on the surface of an object, light will be reflected or refracted for many times, resulting in multiple changes in energy and wavelength. As a result of this multiple changes, the light becomes more complex, resulting in the so-called glare, which looks like the surface of the object is emitting light.

The color of the object surface can also be caused by the reflection and refractive index of light. Different colors of light have different wavelengths and energies under different reflectivity, which will also lead to different colors of objects.

The color of an object is produced by the reflection and refraction of light. These processes lead to changes in the wavelength and energy of light, which makes the object appear different colors.

Color can be manufactured artificially. Pigment is a chemical substance that can be mixed and blended to produce different colors. In the fields of painting, photography and film production, people often use pigments and other chemicals to produce various color effects.

People can make colors by adding chemicals, such as adding ferric oxide or sodium hydroxide to pigments to produce different colors. Similarly, people can also buy or manufacture pigments of different colors to produce the desired colors.

Although pigments can be manufactured manually, the technology and cost of color manufacturing may limit their use in some fields. Therefore, in most cases, people use natural colors, such as plant ash, paraffin, coal, etc., to make the colors we need.

Synthetic pigments are different from natural pigments, as follows:

The raw materials of synthetic pigments are different from those of natural pigments. Natural pigments are usually made from natural substances (such as plants, animals or minerals), while synthetic pigments are made from chemical substances (such as chemicals and synthetic materials).

The properties of synthetic pigments are also different. Natural pigments usually have specific advantages and limitations, while synthetic pigments can be blended between different properties to meet different needs. For example, synthetic carbon black can be used for outdoor painting and paint, while natural carbon black is usually darker and may be more vulnerable to environmental pollution.

The use of synthetic pigments is different from that of natural pigments. Natural pigments are often used to create works of art and application materials, while synthetic pigments are used in various applications, such as architecture, medicine and military.

Some chemicals can be used to color objects instead of pigments.

Here are some possible ways:

Mixing of acid and base: The mixing of acid and base can be used to dye objects. Paint the mixture of acid and alkali on the object and wait for the mixture to evaporate, which will leave the color on the object.

Use sodium oxide and hydrogen peroxide: sodium oxide and hydrogen peroxide can be used to dye objects. Paint the two chemicals on the object and wait for them to decompose, which will leave the color on the object.

Use fading agent: fading agent can be used to fade objects. For example, the use of fading agents can fade the color of red leaves, thus coloring the leaves.

These methods do not use only pigments, but they can color objects without pigments.

Can the color of an object be changed by changing its reflection and scattering?

The answer is: Yes.

When a light shines on the surface of an object, it will be reflected, scattered or absorbed by the surface of the object. If the object surface is highly diffuse, most of the light will be reflected back, while a small part of the light will be scattered and absorbed.

Color comes from the reflection and scattering of light. When light is reflected by an object surface, some of the light will be reflected back, while others will be scattered or absorbed.

If the reflection and scattering characteristics of the object surface change, the reflection and scattering behavior of these rays will also change.

If the reflection and scattering characteristics of the object surface change, some of the reflected light may become more intense, making the object appear different colors. For example, in the mixed experiment of reflection and scattering, scientists simulate different colors by changing the reflection and scattering characteristics of the object surface.

Some optical devices, such as reflective dye lamps, can change color by reflecting and scattering light. These lights simulate different colors by changing the direction and frequency of light, so that objects can show the desired color.

Dispersion and color separation are two important concepts in computer vision and image processing, which are used to describe the distribution of color in images or videos and to extract color information.

Color Dis

Dispersion refers to the dispersion of colors in an image or video according to certain rules, forming a series of color blocks. These color blocks can be distributed in different space and time, and may be subject to certain noise interference. In the process of dispersion, we need to consider the spatial characteristics of color and the characteristics of light.

Color Separation

Color separation refers to extracting color information from pixels or regions for subsequent processing or use. The process of color separation can be based on different algorithms, such as color space conversion, color space interpolation, color separation matrix, etc. Among them, color space conversion is to convert color space from one to another, such as converting RGB color space to CMYK color space, or deleting some colors from the image to extract color information.

In practical applications, dispersion and color separation are interrelated and often used together. For example, in the color separation matrix algorithm, we need to calculate the color separation matrix first, and then use the matrix to extract color information.

The surface of textile fabric can create different colors by changing the reflection environment:

This technique is called dispersion or color separation. It uses a light source with different reflective environments to illuminate the light onto the surface of the fabric, and then measures the angle and intensity of the light reflected from the fabric. In this way, you can create different colors without using colors.

Make the fabric color changeable:

This usually requires the use of special dyes or coatings.

Examples of color changing effects on clothing or household items have been very common, such as color changing curtains, color changing carpets and color changing tablecloths. In these applications, the color change effect of the fabric is usually achieved by coating the surface with dyes or coatings.

The method of realizing the color changing effect can vary depending on the fabric type, application scene, personal preference and other factors.

Color changing fabric is a kind of fabric whose color is changed by adding color changing agent to the fabric. The color change agent can be added to the fiber interior of the fabric or to the coating of the fabric.

In the way of adding color change agent inside the fiber, the most common way is to apply color change agent on the yarn of the fiber, and then weave the yarn into the fabric through the spinning process. This addition method can give the fabric different colors, such as rainbow colors. Shanghai

Color change can also be achieved by adding color change agent to the fabric coating. In this way, the color change agent can be added to the surface of the fabric to change the color of the fabric through the process of washing and drying.

The working principle of color changing fabric involves the adding method of color changing agent and the spinning process, which can give different colors to the fabric.

Color changing dyes refer to dyes that can change color according to different conditions. In dye molecules, there are one or more excited states and ground state electrons. When dye molecules are exposed to light or chemical excitation, the excited state electrons will jump to a higher energy level and release energy at the same time. These energies will excite the electrons in the dye molecules to appear excited states, which will change the color of the dye molecules.

Common chromotropic dyes include quantum dots, azo dyes, cyclic dyes, etc. Among them, quantum dots are a kind of material composed of azo dye molecules, which have great luminous intensity, but are relatively vulnerable to chemical excitation; Cyclic dyes are more stable, but the change of color requires a longer chemical stimulation.

The ability to change the color of an object is often referred to as optical color change. Here are some ways to change the color of an object with light:

Color changing lens: Color changing lens is a kind of lens that can change color according to the change of light at different wavelengths. By changing the reflection and refractive index of the lens, different colors can be produced according to different wavelengths of light. This technology is widely used in sunglasses and goggles.

UV LED lamp: UV LED lamp can emit light of different colors. By controlling the spectrum of the lamp, it can create a rainbow like lighting effect. This technology is widely used in decoration and lighting.

Fluorescent materials: Fluorescent materials can absorb and emit light of different wavelengths, thus producing light of different colors. By adding a specific fluorescent substance to an object, it can change color. For example, by adding a fluorescent substance to a fluorescent rod, it can become a specific color.

Laser cutting: laser cutting can use light of specific wavelength to produce fragments of different colors, which can be absorbed by objects, thus changing the color of objects.

The principle of these methods is to use the change of light to produce color.

The reason why textiles change color in the sun is usually determined by the color of textiles and the nature of dyes.

One possibility is to achieve color change in sunlight by using a color changing fiber (color changing fiber is a special fiber that can reflect and absorb light of different wavelengths). These fibers can be designed to reflect light of a specific wavelength and absorb light of other wavelengths to create different color effects. For example, some color changing fibers can reflect blue light and absorb red light, so that people can see different colors.

Another possibility is to use dyes to achieve color change in the sun. These dyes can absorb and reflect light of different wavelengths to achieve the desired color effect. In sunlight, these dyes will absorb light of different wavelengths and reflect light of other wavelengths, thus creating the desired color.

Whether using color changing fibers or dyes, certain technologies are needed to control the color of textiles and the color changing effect in the sun. These technologies include hair dyeing technology, color change technology in the sun, and color change technology.