Fiberglass mesh cloth is based on fiberglass woven fabric and coated with polymer anti-emulsion. Therefore, it has good alkali resistance, flexibility and high tension resistance in the longitude and weft direction, which can be widely used in building walls, insulation, waterproof, crack resistance, etc.Glass fiber mesh cloth is mainly alkali resistant glass fiber mesh cloth. It is made of glass fiber yarn without alkali (mainly composed of silicate and with good chemical stability) by special structure -- leno tissue twisting, and then by high temperature setting treatment such as alkali resistance solution and reinforcing agent.
Production technology of glass fiber mesh cloth:
One, the introduction of 14.5% ~ 16.7% in the glass composition 6% of zirconium dioxide and titanium dioxide, by 1600 ℃ high temperature melting, made from platinum leakage, continuous filaments, the spell, twisting into textile fibre glass, in the process of drawing monofilament coated with water soluble polymer and coupling agent of epoxy resin, in order to meet with alkali resistant glass fiber grid cloth in post processing of polymer affinity.
Second, in order to further improve the security and stability of alkali-resistant glass fiber grid cloth durable performance, again after the warp knitting processing becomes gauze coated styrene-butadiene rubber and pure acrylic emulsion, with constant temperature constant speed constant tension control technology makes the adhesive fully (this is a process from the German basf in Europe developed for non-alkali glass fiber grid cloth alkali resistant coating technology) early can effectively resist the polymer mortar Ca (OH) 2 hydration period erosion in glass fiber grid cloth. After coating, the anti-slip strength of grid cloth junction is 3.5~ 4.5n.
Iii. Alkali resistance of glass fiber mesh cloth in addition to the coating of alkali resistance, the main way of alkali resistance is to form a mixed film of zirconium and titanium ions on the surface of the fiber to prevent the erosion of alkaline substances.With the increase of time, the chemical state of zirconium tends to be stable.Such as alkali glass fiber grid cloth in table Ⅲ alkali retention rate is more than 85%, far higher than other alkali glass fiber coating mesh cloth, so we can also call it a natural alkali glass fiber grid cloth.
The flaw of glass fiber mesh cloth is production cost is high, this is concerned with zirconium, rutile and melting temperature, also because of its material sex is short, initial strength is inferior to medium alkali, do not have alkali mesh cloth.