Yesterday (April 26, 2021), it was the Seven World Aldehyde Free Days. On this occasion, why not follow the editor of Tiantian to understand the current market situation of the domestic formaldehyde-free board.
Formaldehyde is commonly found in our In daily life: there are both pollution from outdoor air (such as industrial waste gas, vehicle exhaust, photochemical smog, etc.), and pollution from indoor itself. According to relevant reports, the annual average concentration of formaldehyde in urban air is about 0.005-0.01mg/m³, which is obviously not enough to cause serious indoor air pollution. Formaldehyde is more from indoor pollution: such as chemical products such as building materials, decorations and daily necessities.
Artificial panels are a commonly used interior decoration . Because formaldehyde has strong adhesion, it can strengthen the hardness of the board and the ability to prevent insects and corrosion, and the price is cheap. Therefore, in the artificial boards on the market, such as particle boards, medium density fiberboards and plywood, formaldehyde is traditionally used as the main component. The urea-formaldehyde resin is used as an adhesive, so there will inevitably be formaldehyde odor release. According to tests, 100cm² of wood-based panels can release 3-18μg of formaldehyde in one hour. In addition to the above-mentioned wood-based panels that emit formaldehyde due to the use of adhesives, other decoration materials, such as wall and floor decoration aids, use adhesives, so formaldehyde will also be released, causing harm to the indoor environment.
According to the survey of China Building Decoration Association:
● The average exceeding rate of formaldehyde in interior decoration materials is 60%— 70%, and the release period is at least 5 years.
182 diseases are related to formaldehyde, 90% of leukemia The child is related to formaldehyde pollution in decoration.
● 110,000 people die from formaldehyde pollution every year in my country, every day 304 people died from excessive formaldehyde.
Formaldehyde-free board: emerging as the times require, the trend of the times
Formaldehyde-free board, that is, formaldehyde-free wood-based board, is based on Wood or non-wood plant fiber materials are the main raw materials, and the boards are produced by applying formaldehyde-free adhesives or no adhesives, and without adding other additives containing formaldehyde. Formaldehyde-free boards can only be called formaldehyde-free boards if no formaldehyde-containing additives are added from the board core to the finish. The board is different from the traditional joinery board, that is, the aldehyde-containing wood-based board produced with three-aldehyde glue (urea-formaldehyde, phenolic, melamine-modified formaldehyde resin glue).
On March 9 this year, Standard announcement issued by the State Administration for Market Regulation and the National Standards Administration (2021year3 number), managed by the National Wood-based Panel Standardization Technical CommitteeGB/T 39600—2021“Classification of Formaldehyde Emission of Wood-based Panels and Their Products”andGB/T 39598—2021 “Guidelines for Indoor Loading Limits of Wood-based Panels Based on Limit Formaldehyde”��� and Beihai Fenglin Timber Industry Production Base Phase I project related work, and increase the supply of high-end products such as formaldehyde-free boards.
Wanhua Hexiang Ecological Technology Co., Ltd. and its subsidiaries are mainly engaged in the research and development and production of formaldehyde-free ecological straw boards, ecological adhesives, and the development and manufacture of straw board complete sets of equipment. The company’s core products “Hexiang board” and “Guoxiang board” are artificial boards made of straw, wheat straw, reed and other crop straw and fruit tree branches, etc., which are made of formaldehyde-free polyurethane ecological adhesive. Panels can be widely used in civil furniture, office furniture, wardrobes, cabinets, floors, interior doors, wall cabinets, window covers, door covers, decorative wall panels, sound-absorbing panels, partition walls, etc. The straw board manufacturing technology was included in the national spark plan project, won the second prize of national scientific and technological progress, and passed the “Ten Rings” certification of environmental labeling products, which is superior to Japan’s F★★★★standard and E0standard, and has won the U.S. EPA-NAF aldehyde-free exemption certification. At present, the company’s products mainly supply high-end custom furniture brands, and more than 100 brands use the company’s panel products.
Polyurethane adhesive on formaldehyde-free particleboard/ Approved performance in fiberboard is high
At present, the formaldehyde-free adhesives on the market include polyurethane, Soy protein, vegetable starch, polyvinyl acetate, polyacrylate, etc. Among them, polyurethane adhesive, namely MDI, has been used in the wood-based panel industry for nearly 30 years, and is currently widely used in oriented strand board, particle board and fiberboard. Polyurethane adhesives not only do not contain formaldehyde, but also have obvious advantages compared with urea-formaldehyde adhesives. From the point of view of particleboard, the use of polyurethane adhesive not only has excellent water resistance and good mechanical properties, but also has relatively loose requirements on the moisture content of raw tree species and shavings, and has the characteristics of low sizing amount and high mechanical strength. Calculated by the amount of glue used per cubic meter of particleboard, the amount of polyurethane adhesive used is only 1/6 of the amount of urea-formaldehyde glue. Sofia Home Furnishing, a leading company in customized home furnishing, is also committed to completely replacing the particleboard and fiberboard produced by MDI polyurethane as the base material, and named it Kangchun board.
Polyurethane adhesive in formaldehyde-free plywood
Although the industry generally recognizes the environmental protection and health performance of formaldehyde-free plywood However, there is a bottleneck in the application and promotion of plywood de-aldehyde: According to the analysis and introduction of Zhang Zhongtao, member of the Party Committee of the Forestry Industry Planning and Design Institute of the State Forestry and Grassland Bureau, and the director of the first industrial institute, the plywood industry depends on clustered subdivision and division of labor. Such a large scale. At present, domestic fiberboard and particleboard can basically compete with the European and American markets through years of introduction, digestion, absorption, and innovation. But on plywood, there are still big differences in terms of equipment and production technology level. Most plywood factories are in the stage of manual operation, and the level of automated production lines is low. It should be said that the current plywood industry is equal to two steps, one is the automation level of the entire equipment, and the other is to achieve no aldehyde addition through automated production lines. From the statistical data, at present, the output of formaldehyde-free particleboard accounts for 6% of all particleboards, the output of formaldehyde-free fiberboard accounts for 2% of all fiberboards, and the proportion of formaldehyde-free plywood production in the plywood field is close to zero.
The prospect of domestic formaldehyde-free panels is bright:
In recent years, air pollution, energy consumption and other environmental pollution problems It has always been a key hot spot in China’s long-term development. Consumers are paying more and more attention to green and healthy product attributes and ecological consumption needs, which has prompted China’s home improvement industry chain to accelerate its development in a green and sustainable direction. The wood-based panel industry is no exception. It is believed that with the joint efforts of all walks of life in the industry, the prospect of formaldehyde-free panels in the domestic market will be bright.
Article reference sources: China Forestry and Grassland Statistical Yearbook, China Building Materials News, Qianzhan.com, etc.
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