Analysis on Application of Flame Retardant in Powder Coating Industry
Plastic powder polymers generally have poor flame retardancy and are limited in many fields. Flame retardant powder coating has the functions of fire prevention, flame retardant and heat insulation. With the rapid development of industry, the requirement of flame retardant is more and more urgent.
Plastic powder polymers generally have poor flame retardancy and are limited in many fields. Flame retardant powder coating has the functions of fire prevention, flame retardant and heat insulation. With the rapid development of industry, the requirement of flame retardant is more and more urgent. Substances that can play a flame retardant role mainly include group n and halogen elements in the periodic table of elements, commonly used compounds composed of elements such as n, p, Cl, Br, Mg, Al, etc. the most economical flame retardant products are compounds such as magnesium hydroxide, which we call similar productsflame retardant.
Some people will misunderstand the definition of flame retardant, think that the flame retardant is added after the powder can not burn. However, powder coatings like most polymer materials can burn, adding flame retardants can only slow down or delay the process of burning, or will automatically extinguish after burning. There are few standards for such products in the powder coating industry. The common practice is to take the material of the extruder sheet for direct combustion to determine its oxygen index, evaluate with reference to the GB2406-1993 and determine the fire resistance with reference to the GB14907-2002. The oxygen index (OI) is the minimum oxygen concentration required for a material to undergo flame combustion in an oxygen-nitrogen mixed gas stream under specified conditions. It is expressed in terms of the volume percentage of oxygen. A high oxygen index indicates that the material is not easy to burn, and a low oxygen index indicates that the material is easy to burn. It is generally believed that the oxygen index <22 is a flammable material, the oxygen index is between 22 and 27, and the oxygen index> 27 is a flame retardant material.
There are also various defects in the application of flame retardants. There are few flame retardant products in the powder coating industry on the market, and the flame retardant mechanisms are different. In order to achieve better flame retardant effect, the addition amount of flame retardant is generally about 5-10%, causing certain damage to the coating film, which will also be greatly affected in the process of powder coating processing. For example, the addition amount of flame retardant composed of bromine compound and antimony trioxide compound on the market is 5%, and the flame retardant level can reach V0 but the coating film flatness is poor. In the flame retardant test of powder coating products, due to the different materials selected, the combustion products have black smoke or pungent odor, which is more polluting to the environment. Flame retardant products are expensive, high production costs, in the powder coating industry to a great extent is limited, most of the flame retardant products can not pass the EU toxicity test.
In order to solve the problem of flame retardant, the addition of flame retardant alone can not meet the demand, some people have studied the use of environmentally friendly flame retardant FR-1530 to make the powder coating has excellent flame retardant effect. The resin has excellent melting rate, high flame retardant efficiency, excellent thermal stability, and can make the flame retardant material have good physical and mechanical properties. According to the flame retardant standards, manufacturers can choose the matching amount of flame retardant to produce flame retardant materials with good heat resistance, good light resistance and good impact strength. However, such flame retardants are rare in the market.
Real-time information
Zhongke Flame Retardant Organization Watches 20 Closing Ceremonies
On the morning of October 22, 2022, members of Zhongke Flame Retardant New Materials Co., Ltd. watched the closing ceremony of the 20th Congress under the leadership of General Manager Wang Ligui.
Everyone knows that there are two common flame retardants. Today we are going to talk about only one of them. Aluminum hydroxide flame retardant is an environmentally friendly halogen-free flame retardant, which can be widely used in fabrics, wood, plastics, and rubber., Polyurethane and other industries have ideal flame retardant effect. In the process of industrial application, it is found that flame retardant failure occurs when aluminum hydroxide flame retardant is added. The following are the reasons for the failure of aluminum hydroxide flame retardant, how to prevent it, how to deal with the operation, and restore the original function.
As a flame retardant, magnesium hydroxide also need to improve what aspects?
When it comes to flame retardants, everyone is familiar with them. Although we usually have less contact with them, we can know what they are used for from the name. Have to talk about magnesium hydroxide, we all know that its main presentation state is a granular, at present, the market sales of magnesium hydroxide particle size is larger, part of the commodity particle size up to tens of microns, immediately used as a flame retardant, poor dispersion, the physical properties of raw materials greater harm. In industrial production, physical grinding methods are generally used to reduce the particle size to 1 micron. The surface of magnesium hydroxide has high polarity and is easy to agglomerate. As the compatibility of refractory materials and polymer substrates, it not only reduces its flame retardant grade, but also causes more serious harm to the physical properties of raw materials.
Hefei Zhongke Flame Retardant New Material Co., Ltd
Sales Department Telephone:15905609730
Ministry of Foreign Trade Telephone:13956052398
Comprehensive department Telephone:0551-67712199
Company headquarters address: Hefei Feidong Economic Development Zone Xianghe Road 36
E-mail:hefei@zkxcl.com
WeChat Public Number QR Code
Mobile website QR code