Veiksniai įtakos rašalas storis pcb

Atspausdinta grandinė plokštė rašalas yra dažniausiai naudojama danga - - elektroninė pramonė % 2c kuri gali forma an izoliacija sluoksnis - spausdinta plokštė apsaugoti apsaugoti nuo išorinė aplinkos trukdžiai. Tačiau , storis spausdinta grandinė plokštė rašalas a labai svarbus faktorius.

Pirma, one of the factors affecting the ink storio of boards is the viscosity of the ink. The higher the viscosity, the poorer the fluidity of the ink, resulting in a thicker ink coating. When the viscosity of the ink is too high, it is easy to experience flow grooves and blocks, which affect the conductivity and aesthethe aesthe of the circuit board. Todėl, the viscosity of ink should be koreguota pagrįstai pagal į skirtingus taikymus scenarijus.

Antra, the roughness of the printed circuit board surface also affects the storio of the ink. If the surface of the board is too smooth, it is difficult for ink to adhere to to form a thin film, which can lead to insufficient coating storio and affect the reliability of the circuit. If the surface is too rough, it can cause ink lakes to form, affecting the athethe affectects ir patikimumas of the board. In screen printing, the more stable the viscosity of the ink on the printing plate, the better. But after being transferred to the substrate, the viscosity increases as greitai as įmanoma.

In addition, the skiediklis of ink can affect the thickness of the ink coating. Common skiedikliai include įvairiai organiniai tirpikliai ir vanduo. Kai the skiediklis koncentracija is too low, the ink consistency increases and the coating storio also increases. If the concentration of the skiediklis is too high, it can easily cause poor ink fluidity, affecting the uniformity and storio of the coating.

In screen printing, screen printing is also an important factor affecting ink storis. The function of the screen is to control the ink and support the template. The amount of ink penetration should be equal to the amount of ink that is transferred to the substrate by fill each mesh with ink and visiškai emptying each mesh as possible per printing.

Yra daug daug operaciniai parametrai kad afektas storis iš the rašalas, toks as the kietumas of the scraper, the skerspjūvis forma, the printing speed, the printing pressure, the net distance, the scraping angle, etc.

The ink scraper is made of elastic rubber. When printing, the front end of the scraper contacts the screen plate and forms an angle with it at the same time, applying pressure and moving, so that the ink in the screen frame leaks through the mesh and is transferred to the substrate.

For the interface shape of the scraper, the sharper the edge of the scraper, the finer the line contact, the smaller the ink output; The rounder the edge, the more ink will be produced. Todėl, in printing, the cross-section shape of the scraper should be correct selected.

Temperatūra ir drėgmė taip pat turi a tam tikras poveikis on the storis of PCB ink. The high temperature environment can promote the rapid kietėjimas of ink and increase the storis of coating. The wet environment may cause the ink to lose viscosity and fluidity, affecting the storiness and uniformity of the coating.