There are several points about the alkali-resistant coating technology of glass rod

1. The glass rod is made of medium-alkali and alkali-free glass Fiber Glass Rod as the base material, and is post-treated with acrylic copolymer glue. The glass rod has high strength, alkali resistance, excellent acid resistance, strong adhesion with resin, easy dissolution in styrene, and excellent stiffness and positioning. It is mainly used as a reinforcing material for cement, plastic, asphalt, roofing, and walls. It is mainly used for GRC pre-laying, coating or mechanized molding, especially suitable for on-site construction of exterior wall insulation engineering glass rod production process and advantages.

2. 14.5% to 16.7% zirconium dioxide and 6% titanium dioxide are introduced into the glass component, melted at a high temperature of 1600℃, drawn into continuous filaments by platinum leaks, and then spliced and twisted into textile glass fibers. During the drawing process, the single filaments are coated with high molecular water-soluble epoxy resins and coupling agents to meet the affinity of the glass rod with alkali-resistant polymers during later processing.
3. In order to further improve the safety, stability and durability of the glass rod, after being processed into a gauze shape by warp knitting, styrene-butadiene rubber and pure acrylic emulsion are coated again, and constant temperature, constant speed and constant tension control technology is used to make it fully adhesive in the early stage, which can effectively resist the erosion of the polymer mortar Ca(OH)2 hydration period on the Fiber Glass. The anti-slip strength of the glass rod intersection after coating is 3.5~4.5N.
5. In addition to coating the alkali-resistant coating, the main alkali-resistant way of the glass rod is to form a mixed film of zirconium and titanium ions on the surface of the fiber itself to prevent the erosion of alkaline substances. With the increase of time, the chemical state of zirconium gradually tends to be stable. The alkali resistance retention rate of the glass rod is greater than 85%, which is much higher than other Fiber Glass, so we can also call it a natural glass rod.
The defect of alkali-resistant Fiber Glass is the high production cost, which is related to zircon, rutile and melting temperature, and also because of its short material properties, the initial strength is not as good as that of medium alkali and alkali-free glass rod.