Re-dispersible emulsion powder is water soluble redispersible powders. It is a copolymer of ethylene and vinyl acetate, and it takes polyvinyl alcohol as protective colloid. Because of dispersible polymer powders with high binding capacity and unique properties, so they are extremely wide range of applications. Such as building insulation binders, plastering mortar, tile adhesive, caulking agent, interface, gypsum, exterior wall PuTTY, PuTTY elasticity, elastic coatings, repair mortar and self-leveling mortar, adhesive powder polyphenylene grain thermal insulation mortar, etc.
Using re-dispersible emulsion powder can improve various cementitious materials and mortars of various properties. It improves adhesion, cohesion, impact resistance, wear resistance, flexural strength, curvature, lower modulus of elasticity, reduce water absorption, increase water retention and water resistance, etc. Buildings has an unusual intensity when it build with bricks, blocks and so on.
Re-dispersible emulsion powders are powder adhesive made by a special latex (polymer) spray-drying. Such powders with water can be dispersed again soon to form emulsion and it has the same properties with initial emulsion, which can form a film after evaporation of water. This membrane with high flexibility, high weather resistance and high adhesion to various substrates.
Re-dispersible emulsion powder are green, building energy-saving, high-quality multi-purpose powder materials. They are indispensable functional additives of dry-mix mortar. They can improve mortar performance, mortar strength and the adhesive strength of mortar with a variety of substrates. They improve flexibility and variable row, compressive strength, flexural strength, wear resistance, toughness, adhesion and water-holding capacity and constructability. In addition, the hydrophobic polymer powders can make mortar with good water resistance.
Many customers do not know how to distinguish quality of re-dispersible emulsion powder. According to the large collected data, here to summarize and share. Hope it is helpful.
1 dissolve: take a certain quantitative powder dissolved in 5 times the quality of the water, Let stand for 5 minutes after fully stir. In principle, less insoluble settled to the bottom, the better the powders quality.
2 film: take a certain quality of powder and dissolve in twice times of the water, rest for 2 minutes after fully stir, stir again, place the solution in a clean glass, glass placed in ventilation and shade. To be fully dry, peel off to observe the polymer film. High transparency is good quality. Moderate pull, stretch well is good quality. Cut film into strips, then soak in water and observe after 1 day, less dissolved by water is good quality.
3 ash: take a quantitative powder, weigh and place in a metal container and heat up to about 500 degrees, cool to ambient temperature after a 500-degree heat and burn, then weigh again. Light weight is good quality. OKCHEM blog updates knowledge and information about chemicals and precise datas of China chemicals, if you have interest, please follow us on linkedin or visit OKCHEM.COM.