About the main function of Fiberglass Cloth for old wall decoration

Because the Fiberglass Cloth is alkali-resistant, it has strong tensile strength. Many houses are decorated, especially when old houses are renovated. If there are cracks in the wall, the decoration company or the decoration worker will advise the owner to put some cracks on the wall. Pasting a layer of Fiberglass Cloth on the surface is said to prevent the new wall from cracking again. This product has the characteristics of stable structure, high strength, good alkali resistance, anti-corrosion, anti-cracking and other characteristics. It has the best reinforcement effect and is simple and easy to construct. It is mainly suitable for reinforcing the internal and external surfaces of cement, gypsum, walls, buildings and other structures and preventing cracks. It is a new building material for exterior wall insulation projects. The main purpose is widely used in:

1) On the wall reinforcement materials.
2) Reinforce cement products.
3) Granite, mosaic special mesh, marble back-mesh.
4) Waterproof membrane cloth and asphalt roof waterproofing.
5) Reinforce the skeleton material of plastic and rubber products.
6) Fireproof board.
7) Grinding wheel base cloth.
8) Geogrid for highway pavement.
9) Caulking tape for construction, etc.
1. Good chemical stability. Resistant to alkali, acid, water, cement erosion, and other chemical corrosion; has strong bonding properties with resin and is easily soluble in styrene, etc.
2. High strength, high modulus, light weight.
3. Good dimensional stability, stiff, flat, not easy to shrink and deform, and good positioning.
4. Good impact resistance.
5. Anti-mildew and insect-proof.
6. Fire prevention, heat preservation, sound insulation and insulation. Functions and standards: Fiber Glass are used as reinforcing materials for exterior wall insulation surfaces. Their main functions are: improving the mechanical strength of the surface layer, ensuring the resistance continuity of the facing layer, dispersing the shrinkage pressure and insulation stress of the surface layer, and avoiding stress concentration. Resist surface cracking caused by natural temperature and humidity changes and accidental impact.
Therefore, Fiber Glass play an important role in the exterior insulation system, so choosing a good Fiberglass Cloth is also an important part of ensuring the overall quality of the exterior insulation system. The current national technical standards for external wall insulation: the alkali-resistant tensile breaking strength of the fiberglass mesh in both the warp and weft directions shall not be less than 750N/50mm, the retention rate of the alkali-resistant tensile breaking strength shall not be less than 50%, and the weight per square meter shall be ≥130 grams .
The alkali-resistant tensile breaking strength of JG158-2004 Glass Fiber mesh in both the warp and weft directions shall not be less than 1250N/50mm, the alkali-resistant tensile breaking strength retention rate shall not be less than 90%, and the weight per square meter shall be ≥160 grams. At present, the Fiberglass Cloth used for exterior wall insulation systems on the Chinese market weighs about 130g per square meter, and its strength is generally low. Its normal fracture strength is only 1000N/5cm, or even lower. To this end: the technical indicators of the Fiberglass Cloth for exterior wall insulation projects are required to be standardized, and the purchased Fiber Glass must be qualified before use.
When controlling cracks in external wall insulation, not only the insulation layer material is required to have a certain tensile strength and ultimate stretch, but the crack-resistant protective layer material is also required to have sufficient tensile strength. For this reason, when choosing an Fiber Glass, it is necessary to pay attention to whether the tensile strength of the Fiber Glass itself meets the standards.