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The main film-forming material of nano modified flame retardant coating for interior wall is nano hybrid resin emulsion, synthetic materials and raw nano hybrid resin emulsion selection is the key, will be introduced.
The acrylate type determination
Interior wall coating with the emulsion, acrylic emulsion is a more upscale film-forming material, its performance is more comprehensive, the synthesis of nano hybrid emulsion mechanical stability, freeze-thaw stability, high temperature stability, calcium ion stability and pH stability is very good, but not the amount of gel emulsion demulsification, zero.
The acrylic monomer
The main function of alkali thickening effect, to meet the use requirements by adjusting the viscosity of the emulsion and nano hybrid materials.
The emulsifier type selection
Twelve sulfonate is anionic emulsifier, can improve the mechanical stability of the latex. When the emulsifier amount is too much or too little in the emulsion freeze-thaw, after demulsification was rubbish like.
The choice of the initiator
The commonly used water-soluble sulfate as initiator. When the initiator content is low, or to initiate the reaction, molecular weight or latex polymer greatly; when the trigger higher content of agent, polymerization reaction speed is too fast, the molecular weight is small, or the reaction speed is too fast to control, gel content is bigger; synthetic agent dosage is too high or too low is not conducive to nano material hybrid emulsion initiator.
The inorganic nano material selection
Available flame retardant material a lot, but nano magnesium hydroxide Mg (OH) 2 is used as the flame retardant polymer materials, its main advantage is the higher decomposition temperature. As the flame retardant can avoid high temperature due to fire retardant polymer decomposition caused by qualitative change of magnesium hydroxide. Nano Mg (OH) 2 after surface modification, relatively easy to disperse and stable, with acrylic emulsion is more easily combined with hybrid emulsion was stable, without separation occurs.
