Glass yarn and plastering glue should be closely related

When subjected to tensile deformation, the plastering glue must work in harmony with the Fiber Glass. The two materials must have a good correlation. No matter how high the strength is, cracks will still occur in the grid cloth that has a poor correlation with the plastering glue. Produced in the early stages.

When the protective surface layer begins to bear tensile force, the glass yarn should be in a stressed state as soon as possible to exert its tensile properties and disperse the stress. Although the glass yarn cannot prevent the plaster mortar from producing the first crack when it reaches a certain tensile strain, it can effectively delay the development time of the first crack and limit the width of the first crack, and pass its longitude and latitude directions. The nodes distribute stress so that the entire plaster mortar is evenly stressed and cracks are evenly distributed.
In Europe and the United States, it is generally believed that cracks with a width of less than 0.2mm are harmless cracks. For the external wall insulation system, the more important thing is not to prevent the occurrence of cracks, but to delay the deformation time as much as possible, thereby delaying cracking, and at the same time limit the width of a single crack.
1. Higher node strength
If the nodes slip when the glass yarn is stretched, the stress will be mostly borne by the plastering glue in the initial stage of stress, causing cracks.
If the nodes do not slip when the glass yarn is stretched, but the stretching strain is large, it will also cause the plastering glue to crack at an early stage.
The tensile strain of the glass yarn includes the strain in the early stage of tension and the strain at fracture. It can be expressed by the tensile force when the elongation is 0.25%, 0.5%, and 1.0%, as well as the tensile force and fracture strain at break.
3． Smaller yarn deflection
When Fiber Glass is weaved, it is inevitable that the yarn will go astray. If it deviates too much, it will cause eccentricity when receiving force, which will also affect the use effect. Generally speaking, within a length of 1m, the deflection of the woven wires shall not exceed 3 woven wires.