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Analysis on the production process of mesh cloth

2019-09-29

The mesh cloth is based on a glass fiber woven fabric and is coated with a polymer anti-emulsion. Therefore, it has good alkali resistance, flexibility and high tensile strength in warp and weft directions, and can be widely used for heat insulation, waterproofing and crack resistance of buildings inside and outside walls. The glass fiber mesh cloth is mainly made of alkali-resistant glass fiber mesh cloth. It is made of medium-alkali-free glass fiber yarn (mainly composed of silicate, good chemical stability) and twisted by special structure - leno weave. After high temperature heat setting treatment with anti-alkali, enhancer and the like.




Production process of glass fiber mesh:




1. In the glass composition, 14.5%~16.7% of zirconium dioxide and 6% of titanium dioxide are introduced. After melting at 1600 °C, the platinum is pulled into a continuous filament shape, which is spun and twisted into textile glass fiber. In the process, the monofilament is coated with a polymer water-soluble epoxy resin and a coupling agent to satisfy the affinity of the glass fiber mesh cloth with the alkali-resistant polymer in the post-treatment.




2. In order to further improve the safety and stability of the alkali-resistant glass fiber mesh cloth, the styrene-butadiene rubber and the pure acrylic emulsion are coated again after being warp-knitted into a gauze, and the gluing is performed by constant temperature and constant-speed constant tension control technology. Adequate (this process is an alkali-resistant coating technology developed by BASF in Europe for alkali-free glass fiber mesh). It can effectively resist the erosion of glass fiber mesh in the Ca(OH)2 hydration period of polymer mortar. The anti-sliding strength of the mesh joints after coating is 3.5~4.5N.




3. Alkali resistance of glass fiber mesh cloth In addition to coating alkali-resistant coating, the main alkali-resistant method 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. As time goes on, the chemical state of zirconium tends to be stable. As shown in Table III, the alkali-resistant glass fiber mesh has an alkali retention ratio of more than 85%, which is much higher than other glass fiber alkali-resistant coated meshes. Therefore, we can also call it natural alkali-resistant glass fiber mesh. .


3d mesh cloth introduction


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