A useful guide to modified starch powder

As the economy develops and living standards rise, people are paying increasing attention to the quality of home decoration. For wall finishes, putty and paint are commonly used instead of wallpaper, ceramic tiles and similar materials. Traditional interior-wall and tile putties in China are mainly made by mixing polyvinyl alcohol (107 glue) or carboxymethyl cellulose with double-fly powder, talc and other ingredients. Although these materials provide the adhesion required for building materials and offer some resistance to mould and moisture, their overall bond strength is limited. Putty made with them may crack or peel, and its water retention and resistance to mould and moisture may be inadequate. In humid environments, mould, skinning or blistering may occur, and the material can be difficult to apply, transport and store. The source text warns that formulations containing high levels of harmful substances such as formaldehyde may pose health risks, including damage to the nervous system and, in severe cases, poisoning or cancer. It notes that infants, young children and older or frail people may be particularly vulnerable. There is an urgent need to develop a new generation of building putty powder to replace 107 glue and traditional putty.