Fiber opening process of electronic grade glass fiber cloth and size used in same

Abstract

The invention relates to a fiber opening process of electronic grade glass fiber cloth and size used in the same. The fiber opening process is applied to the technical field of electronic grade glass fibers and is characterized by preparing and boiling the size: in particular, firstly weighing a certain amount of main size PVA and then pouring the PVA into a size boiling barrel, adding a certain amount of deionized water, stirring the mixture and raising the temperature to dissolve the PVA, then adding the weighed leavening agent after the PVA is completely dissolved and becomes transparent and clear solution, and preserving heat for half an hour after stirring the mixture until the PVA is completely dissolved, thus the size can be used. The size comprises the following components in percentage by mass: 5-10% of main size PVA, 0.5-1% of added leavening agent and the balance water. The invention provides the fiber opening technology of the electronic grade glass fiber cloth suitable for printed-circuit boards with high precision, high uniformity and high performance. The electronic grade glass fiber cloth prepared by the fiber opening technology is thin and uniform, has faster resin impregnation, is suitable for the insulation enhanced materials of the printed-circuit boards and is extensively applied to the high-end products such as mobile phone boards, notebook computers, automotive sheets, digital cameras, digital players, navigation equipment and the like.

Description

technical field [0001] The invention relates to a process applied in the technical field of electronic-grade glass fiber cloth weaving and its slurry, in particular to a fiber-opening process of electronic-grade glass fiber cloth and its slurry. Background technique [0002] The glass fiber yarn used as electronic-grade glass fiber cloth is an alkali-free glass fiber (E-glass) whose main component is SiO 2 , Al 2 O 3 , CaO ternary system, on this basis, add B 2 O 3 Replace part of SiO 2 , MgO replaces part of CaO to form the current general alkali-free glass fiber, and its main raw materials are silica sand, limestone, boron oxide, etc. The glass fiber yarn manufacturing process is to pulverize the raw ores, disperse them evenly, mix and melt them in a furnace at about 1300 °C, and use the gravity to make the high-temperature glass liquid through the spinning box to be rapidly unloaded and extracted into silk. The diameter of a single fiber is Between 4-9μm, then tens ...

AI Technical Summary

Problems solved by technology

The present invention uses the chemical fiber opening method to avoid the defects of poor appearance such as broken threads on the cloth surface and hairiness caused by excessive physical fiber opening in the prior art

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