China high power fiberglass mesh tape anti-cracking principle of external wall insulation project: In the external wall insulation project, the ratio of the limit control stretch to the restrained stretch can be used as the "insulation system anti-cracking factor K." to quantitatively evaluate the resistance Cracking capacity: K.- (aT+e, +eOR where g, one plate limit stretch (mm/mm): aT- a temperature difference deformation (mm/mm); E, a free shrinkage relative deformation (mm/ mm ); Relative tensile deformation (mm/mm).

In general, when K>1.0, the insulation system has high crack resistance, and no macro cracks can be seen in the insulation material system. At the same time, the temperature stress, tensile strength and time of the material exist. If the temperature stress curve of the material is lower than the tensile strength curve, the temperature stress is a safe stress and no temperature cracks will occur.

If the temperature stress curve intersects with the tensile strength curve. In a certain period of time, the stress quotient line of china high power fiberglass mesh tape will be higher than the line of inspection strength, and the order will be opened for viewing. Therefore, when the principle of "release" is adopted. It is required that the material heart wine is flexible enough. Make the land-degree stress demand line always be below the inspection-guaranteed-degree pain line. When purchasing the "machine" in the original period, the material must have sufficient technical strength, so that the adhesive strength will be curved or the temperature stress will be self-aligned. Above.

Therefore, in the design and construction as well as in the production of building protection, we should try our best to control the strength curve and the master stress line from the whole process of construction and production. At the same time, it is necessary to ensure that the fourth son of Hangzandu of the insulation system K.>1.0. The principle of "dare" should be adopted. When inspecting the appraisal key of the external wall, it is required to adopt a structural design without air education, that is, there is no air education between the china high power fiberglass mesh tape insulation house and the structural star. In the design, the anti-cracking technology route of "flexible south cross-linked layer releasing and causing response" should be adopted.