Promising aldehyde-free wood-based panels for various panels
2020-01-13 14:04:55
As the main board in the home decoration, the production of blockboard in China has exceeded 10 million cubic meters, which has become one of the main varieties of wood-based panels in China.
Blockboard production has small investment and simple process, and it is a labor-intensive industry. At present, the output of formaldehyde-free blockboard is about 50,000 cubic meters. The adhesives used are mainly water-based isocyanate adhesives and protein-based adhesives. The quality of the products can fully meet the national standards.
Aldehyde-free wheat straw and straw homogenate plate: Wheat straw (straw) homogenizing plate is one of the newly developed non-wood wood-based panels in China in recent years. Due to the effective bonding of wheat straw and straw surface. Domestic and foreign scholars have successfully developed a complete set of production technology for the production of wheat straw (straw) boards using isocyanate as an adhesive. By the end of the 20th century, the production capacity of 1.5 million cubic meters has been formed in North America, and in the past few years, 200,000 cubic meters have been formed in China. Capacity.
Since the plate adopts isocyanate as the adhesive, the product does not contain free formaldehyde, and the crop straw is used as the raw material, so that the product meets the requirements of circular economy and sustainable development, and has the concept of green environmental protection.
Aldehyde-free medium density fiberboard: The development of aldehyde-free MDF began in the late 1990s. Fuzhou Artificial Panel Factory cooperated with ICI Company of the United Kingdom to carry out the productivity test of isocyanate MDF.
Under the conditions at that time, the focus of the company's attention was on the waterproof performance of the board. From the results of the production test, when the amount of sizing is 5%, the performance of the sheet meets the enterprise standard requirements for waterproof MDF. The key technical problem of producing formaldehyde-free MDF using isocyanate resin is still sizing and demoulding. The solution of the above two problems will greatly promote the promotion of isocyanate MDF in the domestic market.
Aldehyde-free particleboard: Isocyanate particleboard is currently not produced in China, and it is mainly used in the production of oriented strand board (OSB).
Aldehyde-free plywood: At present, there are relatively few reports on the research and production of formaldehyde-free plywood in China. In the United States and Europe in the 1970s, pectin or other protein-like glue was used to produce plywood. Later, due to the good gluing and water resistance of UF resin, it gradually replaced soybean gum. However, with the environmental awareness of modern people and the development and progress of gluing technology, the production of aldehyde-free plywood in foreign countries is gradually heating up.
Bamboo flooring and related bamboo laminated products: The Institute of Wood Industry of the Chinese Academy of Forestry has increased the research work on the decoration and decoration materials of aldehyde-free raw materials in recent years, and has made breakthrough progress and applied for two national patents.
Through special sizing process and sizing method, the cost of cementing bamboo with isocyanate is basically flat or slightly increased compared with common aldehyde resin, but the water resistance of the product is enhanced and formaldehyde is not released, all physical and mechanical properties are Meet or exceed the national standard requirements for plywood and laminated timber, and have a broad market prospect.
Blockboard production has small investment and simple process, and it is a labor-intensive industry. At present, the output of formaldehyde-free blockboard is about 50,000 cubic meters. The adhesives used are mainly water-based isocyanate adhesives and protein-based adhesives. The quality of the products can fully meet the national standards.
Aldehyde-free wheat straw and straw homogenate plate: Wheat straw (straw) homogenizing plate is one of the newly developed non-wood wood-based panels in China in recent years. Due to the effective bonding of wheat straw and straw surface. Domestic and foreign scholars have successfully developed a complete set of production technology for the production of wheat straw (straw) boards using isocyanate as an adhesive. By the end of the 20th century, the production capacity of 1.5 million cubic meters has been formed in North America, and in the past few years, 200,000 cubic meters have been formed in China. Capacity.
Since the plate adopts isocyanate as the adhesive, the product does not contain free formaldehyde, and the crop straw is used as the raw material, so that the product meets the requirements of circular economy and sustainable development, and has the concept of green environmental protection.
Aldehyde-free medium density fiberboard: The development of aldehyde-free MDF began in the late 1990s. Fuzhou Artificial Panel Factory cooperated with ICI Company of the United Kingdom to carry out the productivity test of isocyanate MDF.
Under the conditions at that time, the focus of the company's attention was on the waterproof performance of the board. From the results of the production test, when the amount of sizing is 5%, the performance of the sheet meets the enterprise standard requirements for waterproof MDF. The key technical problem of producing formaldehyde-free MDF using isocyanate resin is still sizing and demoulding. The solution of the above two problems will greatly promote the promotion of isocyanate MDF in the domestic market.
Aldehyde-free particleboard: Isocyanate particleboard is currently not produced in China, and it is mainly used in the production of oriented strand board (OSB).
Aldehyde-free plywood: At present, there are relatively few reports on the research and production of formaldehyde-free plywood in China. In the United States and Europe in the 1970s, pectin or other protein-like glue was used to produce plywood. Later, due to the good gluing and water resistance of UF resin, it gradually replaced soybean gum. However, with the environmental awareness of modern people and the development and progress of gluing technology, the production of aldehyde-free plywood in foreign countries is gradually heating up.
Bamboo flooring and related bamboo laminated products: The Institute of Wood Industry of the Chinese Academy of Forestry has increased the research work on the decoration and decoration materials of aldehyde-free raw materials in recent years, and has made breakthrough progress and applied for two national patents.
Through special sizing process and sizing method, the cost of cementing bamboo with isocyanate is basically flat or slightly increased compared with common aldehyde resin, but the water resistance of the product is enhanced and formaldehyde is not released, all physical and mechanical properties are Meet or exceed the national standard requirements for plywood and laminated timber, and have a broad market prospect.
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