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Home> News> Plastic corner guards has good alkali resistance

Plastic corner guards has good alkali resistance

August 16, 2024
Generally, we all know that breaking strength and alkali resistance retention rate are important properties of Profile Pvc. The Profile pvc used in the external wall insulation system is required to have good normal breaking strength and good alkali resistance retention rate. Let's introduce it in detail below.
Plastic corner guards has good alkali resistance
Especially polymer cement plastering mortar with high cement content and cement strength grade. Because the damage to the Profile pvc is not only chemical corrosion, but also the crystallization pressure corrosion of calcium hydroxide and calcium sulfoaluminate. At the same time, the high water absorption rate of mineral materials also has an adverse effect on the Profile pvc.
Experiments have shown that the strength of the plastic corner guards will be lost after soaking in distilled water. At present, my country lacks standards for Profile pvc specifically used in external wall insulation systems, especially alkali resistance retention rate and alkali resistance test methods.
The alkali solutions used by testing agencies or manufacturers in various places are different. Cement-free pure polymer plastering mortar has low water absorption rate due to no alkali corrosion. The plastic corner guards can function normally in it for a long time, which is undoubtedly safer for the long-term crack resistance of the protective surface layer.
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Author:

Mr. Lv Qingtao

E-mail:

qt@ar-fiberglass.net

Phone/WhatsApp:

15870567810

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