Environment-friendly and green secondary slurry of electronic-grade glass fiber cloth

Abstract

The invention relates to secondary warp slurry used in the technical field of electronic-grade glass fiber cloth. The secondary slurry comprises the following components by weight percentage: 5-10 percent of main slurry starch, 0.5-1 percent of smoothing agent, 0.5-1 percent of binder, 0.01-0.05 percent of surfactant, and the balance of deionized water. The invention is warp slurry of electronic-grade glass fiber cloth for a printed circuit board with high-precision, high-uniformity and high-performance, the electronic-grade glass fiber cloth produced by the slurry formula has the advantages of excellent fabric appearance quality, smaller fabric thickness and energy saving and environment-friendly production process. The glass fiber cloth is applicable for insulation enhancing material of the printed circuit board, and is widely used in high-end products such as mobile phone boards, notebook computers, automotive sheets, digital cameras, digital players, navigation devices and the like.

Description

technical field [0001] The invention relates to a warp secondary size applied in the technical field of electronic grade glass fiber cloth. Background technique [0002] Electronic-grade glass fiber cloth is woven from electronic-grade glass fiber yarn. The electronic-grade glass fiber yarn (E-glass) used for weaving is an aluminoborosilicate material, which is made of SiO 2 、Al 2 o 3 , B 2 o 3 Constitute the main network skeleton, MgO, CaO as the inorganic insulator of the network filler. The manufacturing process is to mix and melt silicon yarn, boronite, merite, limestone and other ores in a furnace at 1300 ° C to form a co-melt, and then draw wires through platinum bushings at high speed. During the drawing process, the previous slurry is required. , to prevent yarn breakage and hairiness during spinning. The pumped glass fiber filaments (single filament diameter is about 4-9um) ranging from dozens to hundreds are wound on the silk cake, and after drying, they are ...

AI Technical Summary

Problems solved by technology

2. Warp width, generally speaking, the stronger the warp size is, the narrower the warp width is, which is not conducive to the infiltration of glass fiber cloth in the CCL coating resin. If the resin infiltration is poor, there will be defects in the glass fiber bundle. Glue and other abnormalities cause a short circuit on the circuit board, and the dimensional stability of the glass fiber cloth with a narrow warp width is poor after pressing the board

[0005] At present, PVA is mainly used as the secondary slurry. The disadvantage is that it has strong clustering properties. The appearance quality of the glass fiber cloth produced is average, the warp width is narrow, and PVA is difficult to degrade (it has been banned in Europe), and it will produce after burning. small amount of toxic gas

Images