Views:19 Author:Site Editor Publish Time: 2019-10-24 Origin:Site
Redispersible polymer Powder was further modified by the method of spray drying adding other substances to polymer latex. As a kind of polymeric powder with redispersible, It can be made into aqueous emulsion dispersed in the water.
It improves the important application properties of dry mortars, like longer opening time, better adhesion with difficult substrates, lower water consumption, better abrasion and impact resistance.
This VAE RDP Re-Dispersible Polymer Powder Used in construction mortar and wall putty. In the construction, the dosage of VAE is very low ,6-12kg per ton of mortar, but an important additive , mproving flexibility and its elastic in Mortar.
1. Water Retention: The water retention will be enhanced, which is helpful with such problems as cement or gypsum construction material drying too fast and poor hardening or cracking due to insufficient hydration.
2. Operationality: It can enhance the plasticity of mortar and improve the coating efficiency in construction projects.
3. Adhesivity: It can make mortar attach to base material better since the plasticity of mortar is enhanced.
4. Slip Resistance: It can prevent slipping problem between mortar and the base material in construction project as a result of its thickening effect.
Industrial-grade hydroxypropyl methyl cellulose used in mortar is distinguished by viscosity. Generally, the following types are commonly used Low viscosity: 400 is mainly used for self-leveling mortar. Reason: low viscosity, good leveling, high mortar density. Medium and low viscosity: 20000-400000
Hydroxypropyl methyl cellulose ether-HPMC, as an auxiliary additive widely used in the field of building materials, is mainly used for water retention, thickening and improving the workability of the finish product. Water retention rate is often one of the core indicators for selecting high-quality