保定消光粉厂

Dispersing method of matting powder in paint

消光粉要达到消光效果，必须在漆膜的表面造成光线漫反射，否则消光效果不好。

Extinction powder to achieve extinction effect, must create diffuse reflection of light on the surface of the paint film, otherwise the extinction effect is not good.

因此，消光粉尽量不要研磨，如果研磨或者高速长时间分散，会将消光粉的表面破坏，而且粒径也变太小了，这样的消光效果不理想。

Therefore, the extinction powder as far as possible do not grind, if grinding or high-speed dispersed for a long time, will destroy the surface of the extinction powder, and the particle size is too small, such extinction effect is not ideal.

目前市场上的消光粉的粒径不会大于30微米，对于一般的面漆来说，已经足够了，消光粉一般不研磨的原因是消光粉自身的海绵状结构，过度研磨（或者分散）会破坏海绵状结构，形成光滑的切面，造成消光效率下降。

At present, the particle size of matting powder on the market will not be greater than 30 microns, for general topcoat, it is enough, matting powder generally does not grind because of its spongy structure, excessive grinding (or dispersion) will destroy the spongy structure, forming a smooth section, resulting in a decline in matting efficiency.

消光粉研磨的话，消光能力会有影响的，一般消光粉的粒径在5-20um，不会对表面产生影响，如果有影响的话，加入时的步骤（在搅拌时加入）和油漆的粘度可以适当低点，除非消光粉的分散能力差，否则分散15~30min就达到要求。

Extinction powder grinding, extinction ability will have an impact, generally the particle size of extinction powder in 5-20um, will not have an impact on the surface, if there is an impact, the addition of the steps (when stirring added) and paint viscosity can be appropriately low, unless the extinction powder dispersion ability is poor, otherwise the dispersion of 15-30 minutes to meet the requirements.

另外有时候在实验室分散细度可以达到要求，但是在实际生产就会出现细度问题，其主要原因分析是实验室剪切力高，而实际生产用的分散机，剪切力不够。

In addition, sometimes the dispersion fineness in the laboratory can meet the requirements, but in actual production will appear fineness problems, the main reason is that the laboratory shear force is high, but the actual production of dispersers, shear force is not enough.