Glass yarn glue-dipping method

Abstract

The invention discloses a glass yarn glue-dipping method. The method comprises placing a roll of glass yarn in a vacuum box connected to a vacuum pump and a pressure relief valve, opening the vacuum pump to form a vacuum environment in the vacuum box, feeding a mixed liquid of an epoxy resin and a curing agent into a vacuum box until the level of the mixed liquid exceeds the highest level of the glass yarn by a certain distance, carrying out degassing on the mixed liquid in the vacuum box until the mixed liquid does not have a large amount of air bubbles, opening the pressure relief valve so that the external gas enters the vacuum box and penetrates into the glass yarn by the imbalance of the internal and external air pressure, and soaking the glass yarn in the mixed liquid for a period oftime to obtain finished glass yarn. The glass yarn is infiltrated in vacuum and the glass yarn roll maintains the state at the factory without re-winding and unwinding so that the yarn output is moresmooth, the preparation time is short, the mixed liquid curing in advance is prevented, the possibility of hydrolysis is reduced, the corresponding equipment is low in cost, the floor space is reduced and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the field of fabrication of hollow reactors, in particular to a glass yarn dipping process. Background technique [0002] The alkali-free and wax-free glass yarn is fully infiltrated with epoxy resin and curing agent, and then cured at high temperature. It has the characteristics of high strength, strong impact resistance, high temperature resistance, excellent insulation performance and strong weather resistance, and is widely used. In the production of various air-core reactors, it is used as the insulating material, structural support and protective material of the equipment. [0003] For a long time, the manufacturing field of this equipment is to use the rolled glass yarn prepared by the glass yarn manufacturer, use the glass yarn gluing machine to pull out the glass yarn and apply a certain tension, and mix the prepared epoxy resin with the curing agent. liquid to make it fully infiltrated by the mixed liquid, then wind ...

AI Technical Summary

Problems solved by technology

In this way, the speed of preparing glass yarns pre-impregnated with epoxy resin and curing agent is relatively slow, and the length of a shaft of glass yarns is several kilometers. In order to fully infiltrate the mixed solution, the passing speed cannot be too fast. For example, preparing a shaft 17 It takes about 6 hours for glass yarn of about 1200tex per kilogram, which seriously restricts the improvement of the production capacity of the manufacturer, and this method is used in hot and humid areas because the exposure time is too long and the area is too large, which leads to early curing of the mixture at high temperature or an acid anhydride curing agent Hydrolysis occurs in a humid environment, resulting in waste of raw materials and product quality problems. In addition, the existing glass yarn gluing machine has large volume, high energy consumption, and high price, which has caused great inconvenience to users.

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