How to judge whether magnesium hydroxide expired?
In industry, magnesium hydroxide is widely used, some of the quality of magnesium hydroxide industrial reaction quality, but magnesium hydroxide beyond the shelf life will not lose activity?
In industry,Magnesium hydroxideWidely used, the quality of magnesium hydroxide industrial reaction quality, but magnesium hydroxide beyond the shelf life will not lose activity?
The first is a preliminary examination. Under normal circumstances, magnesium hydroxide should be a white powder. If the magnesium hydroxide is deteriorated, the color will change. In addition, the whiteness of magnesium hydroxide decreases, which also indicates that the activity of magnesium hydroxide changes. In addition, if the shape of magnesium hydroxide can be observed obvious changes (agglomeration, etc.), the properties are not uniform, it is generally not recommended to use.
Then check the storage conditions of magnesium hydroxide: magnesium hydroxide is a very easy to absorb moisture material, if in the storage or transportation process did not do a good job of moisture, it is likely to cause magnesium hydroxide denaturation, loss of use value. In daily work, magnesium hydroxide can be protected from water absorption and deterioration by the following ways: 1. Cover the plastic film and spread the plastic film on the ground. If you are not willing to change the bag for packaging, you can use this method to prevent moisture; 2. Place lime blocks after palletizing to prevent moisture absorption and activity reduction of magnesium hydroxide. 3. As calcium oxide has stronger moisture absorption, calcium oxide is placed in the warehouse, used as a dehumidification agent to reduce the humidity of the warehouse, very effective.
After that, we know how long magnesium hydroxide exceeds the shelf life: how long is the storage time of magnesium hydroxide? One or two months after the shelf life, and one or two years after the shelf life must be very different. The second is where magnesium hydroxide is used? Is the product using magnesium hydroxide important? If there is a failure, will it cause a large loss? Generally speaking, if there is no obvious change in the appearance of magnesium hydroxide, we suggest to re-test the activity of magnesium hydroxide. Magnesium hydroxide detection can quantitatively and accurately determine the activity of magnesium hydroxide through professional detection equipment. Ensure that it will not be placed for too long, resulting in reduced activity and misuse, thereby affecting the quality of the produced product.
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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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