Talking about the plastic coating process of PVC chain link fence

Talking about the plastic coating process of PVC chain link fence

PVC chain link fence is one of the anti-corrosion methods. The more mature domestic method is: the powder coating method, which originated from the fluidized bed method. The so-called fluidized bed was originally applied to the Winkler gas furnace. After petroleum contact decomposition, a solid-gas two-phase contact process has been developed and gradually used in metal coatings. Therefore, sometimes it is still called "fluidized bed coating method". The actual process is to add the powder coating to the bottom of the porous air-permeable container (runner). Status". Become a fine powder evenly distributed.

The fluidized bed of PVC chain link fence is the second stage of solid fluid state (the first stage is the fixed bed stage, and the second stage is the gas transmission stage). On the basis of the fixed bed, continue to increase the flow rate (W), the bed layer begins to expand and loosen, the bed layer height begins to increase, and each particle floats to a certain extent away from the original position, and then enters the fluidized bed stage. The bc section shows that the powder layer in the fluidized bed expands, and its height (I) increases with the increase of gas velocity, but the pressure in the bed (△P) does not increase, and the flow velocity is within a certain range without affecting the fluid position. The required unit power is a characteristic of the fluidized bed used to implement the coating process. The uniformity of the powder fluidization state in the fluidized bed is the key to ensuring the uniformity of the coating film. The fluidized bed used in powder coating belongs to "vertical fluidization". The fluidization number must be found through experiments. Generally can be painted. The suspension rate of powder in the fluidized bed can reach 30-50%.

The plasticizing method of PVC chain protection net is as follows: For example, the chain protection net is degreased and preheated to above the melting point of the powder coating. After immersing in the fluidized bed, the plastic powder will adhere uniformly, and then the plasticized polymer will be cross-linked and leveled into steel. Plastic composite products.

The above is the relevant content of PVC Chain Link Fence. I hope it will be helpful to everyone.