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About RDP
In the exterior wall putty powder, the redispersible powder polymer RDP must be added to play the role of toughness and later strength in the putty powder, so as to prevent the putty powder from peeling off in the later stage.
We know that we need to add cellulose ether to putty powder, but many customers do not know that they need to add RDP, because it is necessary to add RDP powder to increase costs. Therefore, in order to save costs, many customers do not add it, which is why putty is easy to pulverize and has quality problems. This is the key to the chalk problem.
Cellulose ether plays a water retaining role in putty powder. The dried putty has only a certain strength for the time being, but it will slowly pulverize after a long time, which is closely related to the molecular structure of cellulose ether itself. This kind of putty is loose, with high water absorption, easy to pulverize, no strength and no elasticity. If you want to improve the above problems of putty, you can adjust the putty formula and add some mikavae RDP powder to improve the strength of putty powder.
If you want to buy RDP powder, you can contact me. We have free samples for you to test
design@cesite.cn
400-660-5555