How much do you know about the characteristics and use of aluminum hydroxide
Aluminum hydroxide is one of the most widely used inorganic flame retardants in the world. It has three functions of flame retardant, smoke elimination and filling. It has no secondary pollution during combustion, no toxic and corrosive gases during pyrolysis, and absorbs heat and releases water vapor. It has flame retardant and self-extinguishing properties. It not only has good dispersibility in polyolefin, but also is easy to produce flame retardant synergistic effect with other added substances. In addition, due to the existence of crystal water, it can also endow the polymer products with antistatic function, and at the same time improve and enhance the strength and toughness of high molecular polymers. Product features: 1. Excellent flame retardant smoke suppression performance-thermal dehydration decomposition, after dehydration in the combustible
aluminum hydroxideIt is one of the most widely used inorganic flame retardants in the world. It has three functions of flame retardant, smoke elimination and filling. It has no secondary pollution during combustion, no toxic and corrosive gases during pyrolysis, and absorbs heat and releases water vapor. It has flame retardant and self-extinguishing properties. It not only has good dispersibility in polyolefin, but also is easy to produce flame retardant synergistic effect with other added substances. In addition, due to the existence of crystal water, it can also endow the polymer products with antistatic function, and at the same time improve and enhance the strength and toughness of high molecular polymers.
Product features:
1. Excellent flame retardant and smoke suppression performance-thermal dehydration and decomposition. After dehydration, A1203 protective film is generated on the surface of combustible materials to isolate oxygen, so that the concentration of combustible gas and oxygen is reduced, the temperature rise and thermal degradation of polymer are effectively inhibited, the generation of flue gas are inhibited by adsorption, carbonization is made, combustible volatiles are not easily generated, combustion is prevented, and is suitable for processing composite materials with molding temperature lower than 200 ℃.
2. Good insulation performance-fluidization purification process greatly reduces the content of impurity ions such as iron, sodium and potassium.
High whiteness-does not interfere with the dyeing of composite products.
Low iron-less than double zero five (I. e., 0.005 percent).
Low sodium-less than 0.15
Use guidance:
1. Separate use should be selected according to the performance requirements of the product. The particle size is closely related to the performance of the composite material. The smaller the particle size, the better the surface fineness, and the more significant the enhancement effect, but the greater the viscosity when blending. Please carefully adjust the formula to balance the various properties.
2. The selection of different particle size mixed filling, in the appropriate proportion can form a dense filling in the polymer system, improve the flame retardant effect. Reasonable compounding system can avoid filler settling or floating, and reduce the viscosity of the resin blend under the same amount of filling, which is beneficial to shear dispersion.
3. After ultra-refinement, aluminum hydroxide is easy to agglomerate due to the increase of specific surface area, poor compatibility with polymers, and difficult to uniformly disperse, which affects the processing performance of composite materials. The hydrophobic aluminum hydroxide has good interfacial compatibility with the polymer, and the coating layer on the surface can produce a bonding reaction with the group of the substrate resin, reduce the viscosity of the blend, eliminate the interface stress concentration, and improve the mechanical properties of the composite. It is therefore recommend to use products of the hydrophobic type.
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
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Ministry of Foreign Trade Telephone:13956052398
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