The powder coating containing aluminum powder, they are the same with the ordinary pigment-containing powder coatings, as long as it does not exceed a specified limit, there is no fire and explosion hazard.

Compared with the non-pigmented resin powder, when the addition of 5-6% aluminum powder, the so-called powder constant the (dust comstant, the explosive power of the measure) and the maximum explosion pressure to increase to 10%. Aluminum powder content continues to increase the explosive power will increase. When aluminum powder content of greater than 25%, will reach the explosive power of pure metal powder. However, such and aluminum pigments dependencies is not made for the lowest initiator of the combustion energy. Regardless of the dispersion method, the pure resin powders are lower than the minimum initiator combustion energy. Aluminum powder pigment content> 10% and the use of small particle size and without the coating treatment of aluminum powder, the lowest lead to burning energy may be reduced.

The powder coating than ordinary paint security risk to be low, compared to the powder / air mixture with a solvent / air mixture of the initiator of the ignition energy is 50-100 times. However, all Flammability the powder or dust will form an explosive mixture of air, is a potential source of danger. If appropriate measures are taken in advance, can be safe transport, storage and processing. For safety reasons, the previously mentioned various powder powder concentration are not more than 10g/m3. In the spraying zone, often more than this concentration. Because there is always enough oxygen content, it must avoid causing more than the minimum energy spark.

PTB (physical technology Federal Institute) BAM (material testing Federal Laboratory) has been determined the data of the explosion of a variety of pigment-containing powder coating. The results proved that the maximum explosion pressure and the highest increase in pressure, extrusion and dry mix materials.

In order to ensure the safety of the entire spraying process, it must be avoided that the separation of the aluminum powder, accumulated and concentrated in the plant. These basic requirements also apply to solvent-based coatings containing copper powder. Directly caused by the copper-zinc alloy powder explosion hazard than small aluminum powder.

The the powder equipment most have to all components and operating personnel must have a good grounding. Indoor dust concentration should be controlled at the lowest level, as required by the local exhaust system. Under any circumstances, to avoid open flames, sparks and overheating of the surface.