Method for repairing surface pores of carbon fiber envelope bag

Engaged in the processing of carbon fiber envelope bag, whether you are hand lay-up or vacuuming process, the presence of pores on the surface of carbon fiber parts is inevitable. It is impossible for every part to be perfect, there are many reasons for the bubble, and it is difficult to completely eliminate it.
Because of the structure in which the carbon fiber envelope bags are interlaced, it is easy to have defects in the gaps.
First, sandpaper water mill carbon fiber products surface pores, cleaning and drying
When the position of the white point appears, it can be ground with water and sanded until it is not visible. The reason why dry grinding is not recommended is that dust can easily enter the pores, which is extremely difficult to clean out and looks white on the surface. This method of operation may result in partial grinding to carbon fiber, but the pores are not treated and will look less aesthetically pleasing from the outside. In the water-grinding process, it is necessary to grind the water film to evenly hang on the surface of the carbon fiber component. Another benefit of sanding is that the release agent residue can be removed and the adhesion of the back coating can be increased, the dust residue can be cleaned and dried.
Second, spray primer 10-15μm. The main purpose of spray primer is to increase adhesion.
Third, spray coating 50-100μm (dry film), and sometimes spray the micropores can not be sealed, can be sprayed several times at intervals of 15 minutes until the micro-holes are blocked. The special position of the air hole can be used with a brush to assist in pressing.
Fourth, spray varnish treatment 20-30μm (dry film)
More detailed processing requires each carbon fiber envelope bag practitioner to implement a feasible patching solution based on customer needs and actual conditions.