Preparation method of special glass fiber impregnating compound for mica cloth

Abstract

The invention discloses a preparation method of a special glass fiber impregnating compound for mica cloth, which comprises the following steps: (1) taking deionized water of which the mass is 5-10 times that of a lubricant, heating to 60-80 DEG C, and adding the lubricant into the deionized water; (2) taking deionized water which is 5-10 times of the mass of the antistatic agent, and adding the antistatic agent into the deionized water; (3) taking 30% of the total amount of deionized water, and adding glacial acetic acid into the deionized water; (4) slowly adding a silane coupling agent into the system in the step (3) at room temperature, and stirring until oil-droplet-free transparent liquid is obtained; (5) adding the diluted lubricant; (6) sequentially adding a modified epoxy emulsion film-forming agent, a modified acrylate film-forming agent and a polyurethane aqueous solution; (7) adding the diluted antistatic agent, and stirring; and (8) adding the rest deionized water, and stirring. The impregnating compound prepared by the method is a non-starch impregnating compound, and when the impregnating compound is used for preparing mica cloth glass fibers in an impregnating manner, the energy consumption is reduced, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of glass fiber sizing agents, and particularly relates to a preparation method of a special glass fiber sizing agent for mica cloth. Background technique [0002] At present, the glass fiber cloth used in the field of electronic appliances, including the base cloth for insulating materials such as copper clad laminates, laminates, and mica cloth (their thickness ranges from 0.015-0.2mm), the diameter of the single fiber glass fiber used is below 7.5um , In order to ensure the clustering, smoothness and good strength of such spun yarn fibers to meet the requirements of the manufacturing and textile process of air-jet looms, starch-type sizing agent is required, and the drawn raw silk must also be unraveled and twisted. With the development of miniaturization, miniaturization and intelligence of electronic appliances, glass fiber cloth is developing towards thinner, more uniform and better insulation and diele...

AI Technical Summary

Problems solved by technology

If the performance of the sizing agent such as clustering and smoothness is bad, it will have a negative impact on the normal flight of the weft yarn, reducing the quality of the weaving fabric and reducing the weaving efficiency.

[0004] The quality of the sizing agent becomes a key technical issue, especially the flying state of the weft yarn, the main and auxiliary injection pressure and air consumption are closely related to the quality of the sizing agent. In order to improve the flying state of the weft yarn, reduce the injection pressure and air consumption, it is necessary to improve The traction force of the airflow on the weft yarn has done a lot of research work on the development of sizing agents abroad, and the domestic also mainly relies on foreign sizing agent formulations and coating processes, using starch-type sizing agents, which can meet the requirements of air-jet weaving. However, there are the following problems: 1. The sizing requires a constant heating process during wire drawing and coating, which requires harsh conditions and consumes a lot of energy; 2. The drawn raw silk needs to be stripped and twisted; 3. The process of intermediary twisting must also be carried out under the condition of heating and constant temperature, and the conditions for fiber production are harsh; 4. High energy consumption and high cost