There is a special knowledge collection for Drywall Corner bead to prevent cracking of external wall insulation system: Corner Beads Angle plays a role of stress dispersion in the external wall insulation system, and together with the coating mortar, it forms the protective surface of the external wall insulation system, which can resist surface cracking caused by natural temperature and humidity changes and accidental impact.
External wall insulation Corner Beads Angle is made of alkali-resistant or medium-alkali glass fiber yarn as raw material, woven into Beads Angle Casing as base material, and then coated with acrylic copolymer liquid and dried to form a new type of alkali-resistant product. Beads Angle Casing manufacturer wall reinforcement material. Due to the special material properties of Drywall Corner bead, it is stronger and more durable than ordinary cloth because it has high strength and good alkali resistance.
The performance of Beads Angle Render and its compatibility with surface glue are important factors in determining whether the quality of external insulation system is cracked. Breaking strength and alkali resistance retention rate, breaking strength and alkali resistance retention rate are important performance indicators of Beads Angle Render. Breaking strength is closely related to the number or weight of glass branches.
At present, the weight of Drywall Corner bead used in external wall insulation system is about 130g per square meter, and its strength is generally low, with normal breaking strength of only about 1000n/5cm. In countries such as Europe and the United States where external insulation technology and regulations are relatively mature, the breaking strength requirements of Drywall Corner bead are much higher than those in my country. The German Building Technology Committee (DIBT) stipulates that the normal breaking resistance of Drywall Corner bead used in external wall insulation system is 1750n/5cm, and the alkali resistance retention rate is 50%.