Redispersible latex powder is usually white powder, and its composition mainly includes:
1. Polymer resin: located at the core of rubber powder particles, it is also the main component of redispersible latex powder, for example, polyvinyl acetate/vinyl resin.
2. Additives (internal): Together with the resin, they can modify the resin, such as plasticizers that reduce the film-forming temperature of the resin (usually vinyl acetate/ethylene copolymer resins do not need to add plasticizers) Not every kind Rubber powder has additive ingredients.
3. Protective colloid: a layer of hydrophilic material wrapped on the surface of redispersible latex powder particles, most of the protective colloid of redispersible latex powder is polyvinyl alcohol.
4. Additives (external): Additional materials are added to further expand the performance of the redispersible latex powder. For example, adding superplasticizers to certain flow-aiding rubber powders, like internally added additives, not every redispersible latex powder contains such additives.
5. Anti-caking agent: fine mineral filler, mainly used to prevent caking of rubber powder during storage and transportation and facilitate the flow of rubber powder (dumped out of paper bags or tank trucks).