Preparation method of alkali-resistant chopped glass fiber sizing agent

Abstract

The invention discloses an alkali-proof chopped glass fiber impregnating compound, and relates to a preparation method of a glass fiber surface treating agent containing an organic material. The preparation method comprises the following steps: mixing deionized water and glacial acetic acid and evenly stirring; adding a silane coupling agent, a polyacrylate film-forming agent, an epoxy resin emulsion film-forming agent, a water-soluble epoxy film-forming agent, an organosilicone lubricant and a cationic lubricant which are diluted by deionized water, and an antistatic agent diluted by deionized water; and finally adding deionized water and stirring for 15-25 minutes, wherein the stirring speed is 60r / m, wherein the film-forming agents are the polyacrylate film-forming agent, the epoxy resin emulsion film-forming agent and the water-soluble epoxy film-forming agent, the mass ratio of the polyacrylate film-forming agent to the epoxy resin emulsion film-forming agent to the water-soluble epoxy film-forming agent is (2.0-20.0) to (15.0-2.5) to (1.0-10). The alkali-proof chopped glass fiber impregnating compound disclosed by the invention is suitable for an alkali-proof chopped glass fiber of 4-24mm; the impregnated alkali-proof chopped glass fiber has good alkali resistance, bundling property, abrasive resistance, water tolerance, choppability, dispersibility and antistatic property, and cannot disperse in a cement mixing and agitating process; the bundling state of a precursor fiber is kept.

Description

Technical field [0001] The invention relates to a preparation method of a glass fiber surface treatment agent containing organic materials. Background technique [0002] Alkali-resistant glass fiber, also known as AR glass fiber, English: alkali-resistant glassfiber, is mainly used to reinforce cement products (referred to as GRC) as a reinforcing substrate. It is an ideal substitute for steel and asbestos in non-load-bearing cement components. Ordinary glass fiber is not alkali-resistant, and the main glass component of alkali-resistant glass fiber contains SiO 2 (58%-62%), Na 2 In addition to O(8%-13%), it also contains ZrO 2 (13%-16%), TiO 2 (4%-8%), it is characterized by good alkali resistance and can effectively resist the erosion of high-alkali substances in cement. The elastic modulus, impact resistance, tensile strength and bending strength are extremely high. It is 90% in 5% NaOH solution. Corrosion at ℃ for 72 hours, weight loss is 4%. [0003] The glass component of th...

AI Technical Summary

Problems solved by technology

[0004] Alkali-resistant chopped fibers have higher requirements for sizing agents. Most of the existing alkali-resistant glass fiber sizing agents use polyacrylate and vinyl acetate as the main film-forming agent, such as US Patent US.4289536. : 1. It can only meet the chopped fibers of 12㎜-24㎜, and the chopped fibers of 4㎜, 6㎜, and 8㎜ can produce a large amount of hairiness

2. Alkali resistance, water resistance and wear resistance are poor. After the cement mortar is stirred, some fibers will open and produce hairballs, resulting in low strength, uneven surface and rough surface of cement products, which cannot meet the requirements for use.