What is the performance of aluminum hydroxide affected by temperature?
Aluminum hydroxide flame retardant as a chemical substance, in the use of some factors will exist, such as the influence of ambient temperature, will promote its particle size to produce certain chemical changes, so in the use and storage process should pay attention to the reasonable control of temperature, the following to introduce the effect of temperature on the particle size.
aluminum hydroxideFlame retardant as a chemical substance, in the use of some factors will exist, such as the influence of ambient temperature, will promote its particle size to produce certain chemical changes, so in the process of use and storage should pay attention to the reasonable control of temperature, the following to introduce the effect of temperature on the particle size.
The aluminum hydroxide flame retardant prepared by neutralization with sodium metaaluminate and dilute nitric acid, the flame retardant slurry obtained at different neutralization temperatures has different particle size changes after aging for different times.
Neutralization under the condition of 40 ℃, aging at different temperatures, the particle size will become smaller, so low temperature aging can be adopted. However, after neutralization at 75 ℃, the effect of aging at different temperatures on the particle size is not obvious, and the change of particle size is very small, so low temperature aging can also be used.
Under the condition of high temperature neutralization at 70 ℃, the median particle size of aluminum hydroxide flame retardant is 28-30μm, and the median particle size of flame retardant obtained under the condition of neutralization at 50 ℃ is 17-20μm. At this time, the influence on particle size is much smaller than that at neutralization temperature.
If you want to get larger particles of aluminum hydroxide flame retardant, can be neutralized at a lower temperature, as far as possible to shorten the aging time, generally about 0.5h can be, and at a higher temperature, the aging time on its particle size is not very big, according to the need for aging time can be 0.5-1h.
Therefore, we can understand that different temperature effects still have certain changes in the particle size of aluminum hydroxide flame retardant, and the use effects of products with different particle sizes are not the same. In the process of purchasing, we should pay attention to the selection of chemical products suitable for particle size according to their own use requirements, so as to have good use effect.
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