Water-soluble resin

Abstract

The invention relates to water-soluble resin, which is synthesized from the composition comprising the following components by the weight percentage: 5% to 15% of maleic anhydride, 15% to 30% of diethylene glycol, 25% to 35% of oxalic acid, 15% to 25% of diethanol amine and 5% to 20% of acetic acid, wherein the component of diethanol amine is preferably 20% to 23%. The resin is prepared through the following steps: pumping nitrogen into a reaction kettle for protection; heating slowly; stirring, heating up and heat-insulating; and cooling and further heat-insulating. The water-soluble resin can be adopted as the composition of the domestic enhanced glass fiber sizing agent so as to improve the textile performance of the glass fiber, improve the monofilament tension and enhance the toughness, thereby meeting the requirements for the subsequent production.

Description

technical field

[0001] The invention relates to a water-soluble resin in a glass fiber sizing agent. Background technique

[0002] The most common methods of glass fiber production are: pool kiln wire drawing and crucible wire drawing. When the molten liquid glass flows out of the orifice plate by its own weight, it is drawn into a glass fiber monofilament with a very fine diameter by a wire drawing machine during the rapid cooling process. It must be through the action of sizing to produce soft and good toughness for the weaving of glass fiber.

[0003] At present, SR-1 resin is the most widely used domestic reinforced glass fiber sizing agent. Although this resin has the advantages of good thermal stability and convenient use, it is found in the production practice that the glass fiber processed by this resin has poor textile performance. The high production cost makes some manufacturers have to change production. Based on this, it is very necessary to develop a resin wit...