In home life, if unfortunately there is a fire situation, the easiest thing to promote the fire is the furniture. We learned that flame retardant furniture in the market is often seen. Shopping guides usually think that "our furniture is imported from abroad, leather and sponge All have a certain flame retardant effect, which can very effectively alleviate the spread of fire. "" Now in the sofa market, the sponges used in high-end sofas can basically be flame retardant. "
But in fact, many sofas are filled with synthetic materials such as polyurethane foam. The internal energy of this material is 2 to 3 times that of ordinary natural materials. Upholstered furniture and beds with synthetic materials as fillers In the event of a fire in the mat, the fire is more intense and it is easy to cause flashovers. In the home environment where natural materials were used as raw materials in the past, people's escape time averaged 17 minutes from the start of the fire. In the current living environment, people's escape time is reduced to only 3 minutes.
The furniture network has learned that for furniture, especially wooden furniture, if the flame retardant performance of the wood paint on the surface of the board and furniture is not good, it will not only accelerate the combustion, but also release toxic gases. Industry insiders pointed out that the function of flame retardant furniture is not absolute insulation, but refers to the role of retarding the fire in a certain environment, delaying the time of the fire, and gaining more time for rescue.
Recently, a new study from Duke University in the United States reminded that the flame retardants contained in some sofa foam fillers (polyurethane foam) may cause cancer, cause hormonal imbalance, and affect the brain development of infants and young children. "A large number of studies have shown that brominated flame retardants can penetrate into the environment and accumulate in living organisms over time; and according to existing research, brominated flame retardants have been shown to disrupt endocrine activity and affect thyroid function regulation. It may even affect brain development; especially excessive exposure of pregnant women will directly lead to low birth weight, low IQ and impaired behavioral ability of newborn babies, "said Professor Stapleton.
Industry insiders pointed out that it is best to use phosphorus-based flame retardants for sofas, curtains, wallpapers and other flame-retardant household products. Brominated flame retardants cannot be used. When buying furniture, try to choose linen and wool fabric products. It is understood that linen fabric itself has flame retardant properties. In addition, if you are concerned that the furniture you buy contains brominated flame retardants, you should keep the room ventilated, or plant orchids and other plants that can absorb bromine to alleviate the harm of brominated flame retardants to the human body.
CBN is a man-made Superabrasive that outperforms Diamond when used for Ferrous grinding operations.
CBN derives its name from its chemical makeup, of the cubic form of boron nitride (CBN). It has a very desirable characteristic that is sought after when working with difficult to grind (DTG) materials.
Due to its high thermal stability and chemical resistance, the CBN grinding wheel is most suitable for grinding hard ferrous materials, hardened steel, bearing steel, nickel based alloys. machining ferrous materials.
CBN Grinding Wheels are used to sharpen, cut, or remove metal from hard surfaces. Use these wheels when you need a good consistent finish.
Most notably CBN wheels are used to cut HSS metals, like wood tools, blades, bits, and cutters. This type of steel is better than the older high-carbon steel because it can withstand higher temperatures. When you`re tools become dull over time from use, a CBN wheel will bring them back to its sharp use.
Kemei produce CBN(cubic boron nitride)grinding wheels, which can be resin bonded CBN wheel, metal bonded CBN wheels and electroplated Diamond Grinding Wheels. For same steel parts, you can choose all three types CBN wheels, but there still some difference, if you need more information and the best solutions ,please contact us.
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