“Zero Formaldehyde†furniture is made of “non-formaldehyde-free sheetsâ€. Wood-based panels are the base material for most furniture products and the most important component of furniture products. They are also the source of the amount of formaldehyde released from furniture products. Relatively speaking, the small amount of shallow formaldehyde introduced in the processing of furniture such as veneering and edge sealing can be neglected. Because of the use of non-release of formaldehyde, "zero formaldehyde" furniture can solve the problem of the long-term continuous release of formaldehyde in general furniture, which is the origin of the "zero formaldehyde" furniture. With the increasing number of "zero formaldehyde" furniture brands on the market, how to know the truth and identify the purchase of genuine "zero formaldehyde" furniture has become a headache for consumers. Ordinary wood-based panels are divided into several formaldehyde release grades such as E2, E1, and E0. However, different grades of artificial panels are indistinguishable from the appearance, which causes consumers to be easily sneaked into the column by bad merchants. So, is there a problem with "zero formaldehyde" sheets? How can consumers buy real “zero formaldehyde†furniture? Let's take a look at the technologist's statement. "Zero Formaldehyde" sheet has natural anti-counterfeiting technology experts said that only the wood-based panels made with MDI ecological adhesives can not completely release formaldehyde. The "zero formaldehyde" board made by MDI is currently made of rice straw fiber. The uniqueness of this fiber makes the "zero formaldehyde" wood-based panel have "identifiability" different from ordinary wood-based panels. Specifically, how to identify "zero formaldehyde" plates, experts teach consumers several ways to identify. One is to look at the board. Due to the use of rice straw fiber, the “Zero Formaldehyde†sheet will have a unique dense lamellar structure in cross section. This is different from the granular structure of the particle board (particle board) or the fine and smooth section structure of the density board (medium board). Even if the finished product of the furniture has been finished, sealed and sent to the consumer's home, it is easier for the consumer to observe and identify through the perforation and the section of the slot before the furniture is assembled. The second is to smell the knowledge. Although the furniture has been surface treated, the volatile substances (including formaldehyde) cannot be completely closed by the finish and the edge seal. This is why many new furniture still have a strong chemical taste. The new furniture made of "zero formaldehyde" straw slabs, especially the cabinet furniture, will have a faint fragrant grass when the cabinet door is opened. Identification from odor is also a simple method of identification. The third is the boiled test board. If possible, consumers can ask the furniture business for some corners of the furniture, and boil them through hot water to distinguish between true and false. The expert demonstrated a small experiment comparing the fragrant board with the particle board and the MDF. The performance of the fragrant board really surprised the author. Under the same experimental conditions, the advantage of the water swelling rate of the fragrant board compared to the MDF and the particle board is very obvious. As long as you open the boiled plate, you will find that the fragrant board has been boiled for 15 minutes and still maintains a high strength. The MDF and the particle board are broken and smashed. The technician explained: "This is because the wax layer rich in straw itself has a moisture-proof effect. In addition, the MDI glue in the straw board is not like the urea-formaldehyde resin glue used in ordinary wood-based panels. And dissolve, which makes the scented board exhibit a high moisture resistance coefficient and bonding strength, which has the advantage that ordinary plates can't match.†The water cooked by the fragrant board emits a scent similar to that of Pu'er tea, which is pure The natural taste of the straw after boiling; while the ordinary plate of the boiled solution is dark in color, with a boring chemical smell. "Zero aldehyde board" does not have to worry about counterfeiting. The reader will think of such a problem: If the current "zero aldehyde board" is a straw board, then will there be any Other fake straw board used by the black heart to pretend to be "zero aldehyde straw"? What about the board? In this regard, experts believe that there is no need to worry too much. He explained that straw is a good fiber raw material and in many ways even surpasses pure wood fiber. However, straw has not been widely used in the manufacture of wood-based panels because straw is rich in waxy layers. This component makes the straws unable to be bonded by conventional aldehyde adhesives such as urea-formaldehyde resins. Only the MDI ecological adhesive can effectively penetrate the wax layer of straw and bond the straw fiber into a board. Therefore, even if a bad business wants to use a common aldehyde adhesive to manufacture a straw board, it is difficult to achieve in the manufacturing process.
Plain Steel Washers,M6 Plain Washer,Plain Washer Din,Ss Plain Washer
Kunshan Zhonggu Precision Hardware Co., Ltd. , https://www.zgfastener.com