Since ancient times, people have used natural animal and plant pigments as dyes to dye clothing. Indigo, alizarin, gallnut, carmine, etc. are the earliest applied plant and animal dyes in ancient China. The modern organic dye industry has a history of more than 100 years. In the mid-19th century, due to the development of weaving industry in the western industrial countries such as the United Kingdom, a large number of dyes were needed, and the metallurgical industry provided conditions for the research and production of organic dyes. In 1857, the British Boqin used the benzene in coal tar to obtain the organic synthetic dye aniline violet and realized industrial production, and then various dyes appeared one after another. In the past 20 years, with the rapid development of synthetic fibers, organic dyes have been widely used.
The organic dye is an organic compound which is soluble in water or a solvent and which is dyed into a bright and strong color by a suitable method. In addition to its extensive use in the textile industry, organic dyes are also widely used in rubber products, plastics, greases, inks, inks, photographic materials, printing, paper, paint, pharmaceuticals and other fields. The use of organic dyes in the field of wood processing originated in 1913 when aniline violet was used for standing wood dyeing. Since the 1960s, Japan has done a lot of research work in the field of wood dyeing. Germany, Italy, etc. attach great importance to the development of practical industrial technology for wood dyeing, and have formed their own patented technology, and their products have been sold in China. In the late 1980s, China began to explore wood dyeing technology. Since dyeing is an important means to increase the decorative effect of wood and increase the added value of wood, wood dyeing is receiving extensive attention and attention in the field of production research.
1. Dyeing dye for wood
Wood dyeing is a chemical or physical chemical combination of dyes and wood, which makes the wood have a certain color and strong processing. It is an important means to improve the surface quality of wood, improve the visual characteristics of wood and improve the attachment of wood. There are many varieties of dyes and complex structures. The water-soluble organic dyes commonly used in the wood industry include direct dyes, acid dyes, basic dyes and reactive dyes. Direct dyes are dyes that act directly on wood without special treatment. Their combination with lignocellulose relies on intermolecular van der Waals forces and hydrogen bonding forces. Acid dyes, also known as anionic dyes, are dyes that effectively dye fibers in an acidic medium containing a large amount of carboxyl, hydroxyl or sulfonic acid groups. The basic dye is also called a cationic dye, and is a salt formed from an organic base such as a benzenemethane type, an azo type, or a xanthene type, and an acid. The reactive dye molecule contains a reactive active gene and an organic compound capable of forming a covalent bond with a hydroxyl group in wood.
In 1964, Dachuan Yong dyed wood with direct dyes, acid dyes, and basic dyes. In 1978, Matsuda Ken's pair of bleached wood was dyed with disperse dyes and the like. In 1971, Yokoji Kitamura studied the dyeability of wood with various dyes. The results showed that the acid dye had good permeability and was suitable for wood dyeing. In 1990, Iida et al. stained 58 kinds of hardwoods and 3 kinds of softwoods, using 21 kinds of direct dyes, acid dyes, basic dyes and reactive dyes. In 1993, Liu Yuan published an article on wood colorants and their characteristics.
2. Dyeing method
There are many ways to dye wood, depending on the use of the dyed material. Commonly used are veneer dyeing, solid wood dyeing, and standing wood dyeing methods. The veneer dyeing process varies greatly depending on the tree species and dyes. Veneer dyeing is a method of uniformly dyeing veneers and veneers by dipping treatment, and the veneer thickness is 0.2-1 mm. The dyed veneer is used as a panel of wood-based panel, furniture veneer and artificial simulation wood. In 1975, Keda Village researched the dyeing process of wood veneers. It was found that the higher the temperature, the shorter the dyeing time. The immersion thickness at 90 °C for 2 h required more than 24 h at 50 °C. In 1989, Chen Yunying and others explored the dyeing methods of Canadian poplar, eucalyptus and willow veneer. The authors used the acid red GR dye to dye the 0.5mm thick Paulownia bleached veneer by observing and analyzing the dyeing rate and color difference of wood. Solid wood dyeing is the dyeing treatment of the other wood or logs, and the dyeing materials are mainly used for cutting thin wood or making high-grade furniture. Due to the large thickness and long wood length, it is difficult to uniformly and thoroughly dye the wood by the self-permeability of the dyeing liquid under normal conditions. Therefore, in 1992, Tianyefeng dyed the solid wood under complicated conditions such as high temperature, high pressure and vacuum. Standing wood dyeing, usually the newly harvested wood with certain activity, the part is immersed in the dyeing solution, and the active sap flow in the wood capillary drives the dye molecules to rise along the trunk and dye. In 1990, Ishita was born to 58 kinds. Stand-up dyeing tests were carried out on hardwood and three types of softwood.
3. Dyeing process
The difference in the use and dyeing of dyed wood determines the diversity of wood dyeing processes. In 1964, Dachuan Yong and others used the method of impregnation at room temperature to dye wood. Due to the large size of the wood, it is difficult to uniformly dye the interior of the wood, so he tested the cooking method. However, long-term cooking will change the wood structure, and the dye also has poor color development. Therefore, this method is only suitable for dyeing specific dyes or chemicals. So he began to study the differential temperature dyeing method, which first heats the wood, then damps the hot wood into the cold dyeing liquid, and the heated air and water in the wood expand and remove. After the cold dyeing liquid is put into the wood, the inside of the wood is negative. The pressure allows the dye solution to penetrate smoothly into the interior of the wood. In 1966, Mr. Buzuo et al. used Cedar Bbrown A1312N (FBY) dye to dye the Hokkaido and Nanyang materials by pressure injection. In 1992, Tianyefeng used vacuum pressure to carry out solid wood dyeing. Dyeing is completed under complicated conditions such as high temperature, vacuum and high pressure. The treated wood is up to 32 mm thick. The purpose of vacuum decompression treatment is to exclude air and excess water in the wood. The decompression time at 30 ° C was 8-10 h for softwood and 12 h for hardwood; the pressure for decompression was 10 mmHG. The coniferous material was then treated for 6 h at a pressure of 20 hg/cm2. Hardwood leaves were treated for 8 h at a pressure of 30 kg/cm2.
The organic dye is an organic compound which is soluble in water or a solvent and which is dyed into a bright and strong color by a suitable method. In addition to its extensive use in the textile industry, organic dyes are also widely used in rubber products, plastics, greases, inks, inks, photographic materials, printing, paper, paint, pharmaceuticals and other fields. The use of organic dyes in the field of wood processing originated in 1913 when aniline violet was used for standing wood dyeing. Since the 1960s, Japan has done a lot of research work in the field of wood dyeing. Germany, Italy, etc. attach great importance to the development of practical industrial technology for wood dyeing, and have formed their own patented technology, and their products have been sold in China. In the late 1980s, China began to explore wood dyeing technology. Since dyeing is an important means to increase the decorative effect of wood and increase the added value of wood, wood dyeing is receiving extensive attention and attention in the field of production research.
1. Dyeing dye for wood
Wood dyeing is a chemical or physical chemical combination of dyes and wood, which makes the wood have a certain color and strong processing. It is an important means to improve the surface quality of wood, improve the visual characteristics of wood and improve the attachment of wood. There are many varieties of dyes and complex structures. The water-soluble organic dyes commonly used in the wood industry include direct dyes, acid dyes, basic dyes and reactive dyes. Direct dyes are dyes that act directly on wood without special treatment. Their combination with lignocellulose relies on intermolecular van der Waals forces and hydrogen bonding forces. Acid dyes, also known as anionic dyes, are dyes that effectively dye fibers in an acidic medium containing a large amount of carboxyl, hydroxyl or sulfonic acid groups. The basic dye is also called a cationic dye, and is a salt formed from an organic base such as a benzenemethane type, an azo type, or a xanthene type, and an acid. The reactive dye molecule contains a reactive active gene and an organic compound capable of forming a covalent bond with a hydroxyl group in wood.
In 1964, Dachuan Yong dyed wood with direct dyes, acid dyes, and basic dyes. In 1978, Matsuda Ken's pair of bleached wood was dyed with disperse dyes and the like. In 1971, Yokoji Kitamura studied the dyeability of wood with various dyes. The results showed that the acid dye had good permeability and was suitable for wood dyeing. In 1990, Iida et al. stained 58 kinds of hardwoods and 3 kinds of softwoods, using 21 kinds of direct dyes, acid dyes, basic dyes and reactive dyes. In 1993, Liu Yuan published an article on wood colorants and their characteristics.
2. Dyeing method
There are many ways to dye wood, depending on the use of the dyed material. Commonly used are veneer dyeing, solid wood dyeing, and standing wood dyeing methods. The veneer dyeing process varies greatly depending on the tree species and dyes. Veneer dyeing is a method of uniformly dyeing veneers and veneers by dipping treatment, and the veneer thickness is 0.2-1 mm. The dyed veneer is used as a panel of wood-based panel, furniture veneer and artificial simulation wood. In 1975, Keda Village researched the dyeing process of wood veneers. It was found that the higher the temperature, the shorter the dyeing time. The immersion thickness at 90 °C for 2 h required more than 24 h at 50 °C. In 1989, Chen Yunying and others explored the dyeing methods of Canadian poplar, eucalyptus and willow veneer. The authors used the acid red GR dye to dye the 0.5mm thick Paulownia bleached veneer by observing and analyzing the dyeing rate and color difference of wood. Solid wood dyeing is the dyeing treatment of the other wood or logs, and the dyeing materials are mainly used for cutting thin wood or making high-grade furniture. Due to the large thickness and long wood length, it is difficult to uniformly and thoroughly dye the wood by the self-permeability of the dyeing liquid under normal conditions. Therefore, in 1992, Tianyefeng dyed the solid wood under complicated conditions such as high temperature, high pressure and vacuum. Standing wood dyeing, usually the newly harvested wood with certain activity, the part is immersed in the dyeing solution, and the active sap flow in the wood capillary drives the dye molecules to rise along the trunk and dye. In 1990, Ishita was born to 58 kinds. Stand-up dyeing tests were carried out on hardwood and three types of softwood.
3. Dyeing process
The difference in the use and dyeing of dyed wood determines the diversity of wood dyeing processes. In 1964, Dachuan Yong and others used the method of impregnation at room temperature to dye wood. Due to the large size of the wood, it is difficult to uniformly dye the interior of the wood, so he tested the cooking method. However, long-term cooking will change the wood structure, and the dye also has poor color development. Therefore, this method is only suitable for dyeing specific dyes or chemicals. So he began to study the differential temperature dyeing method, which first heats the wood, then damps the hot wood into the cold dyeing liquid, and the heated air and water in the wood expand and remove. After the cold dyeing liquid is put into the wood, the inside of the wood is negative. The pressure allows the dye solution to penetrate smoothly into the interior of the wood. In 1966, Mr. Buzuo et al. used Cedar Bbrown A1312N (FBY) dye to dye the Hokkaido and Nanyang materials by pressure injection. In 1992, Tianyefeng used vacuum pressure to carry out solid wood dyeing. Dyeing is completed under complicated conditions such as high temperature, vacuum and high pressure. The treated wood is up to 32 mm thick. The purpose of vacuum decompression treatment is to exclude air and excess water in the wood. The decompression time at 30 ° C was 8-10 h for softwood and 12 h for hardwood; the pressure for decompression was 10 mmHG. The coniferous material was then treated for 6 h at a pressure of 20 hg/cm2. Hardwood leaves were treated for 8 h at a pressure of 30 kg/cm2.
Commercial Store Display Fixtures and Shop Pop Displays includes Display Stands, Display Showcase, Display Tower, Display
Shelving,Display Rack, Display Counter,Display Pop that can be made from metal, wood,glass,acrylic .
With Logo on each displays, it could be brand your products easily and merchandise item in efficient way.
Vistadisplay is a manufacturer of custom merchandising displays.We are committed to building your custom display solution in accordance with your specifications
we have the capacity to do all the machining and fabrication for your project regardless of size or scope. We offer package of solutions to get your project promoted.
Display Stand,Metal Display Rack,Wooden Display Stand,Acrylic Display Rack
Vista Display Stand Co., Ltd. , https://www.vistadisplayfixture.com