Experimental study of a new composite phosphorus-free detergent agent

Phosphorus-free detergent aids;  Crystalline layered sodium disilicate;  Compound detergent additives;  Hard water resistance

The experiment uses low-cost sodium silicate as raw material, and reacts with a variety of inorganic additives and a small number of organic additives to make a new composite detergent that can replace sodium tripolyphosphate by changing its composition structure. The purpose of the study is to maintain the good characteristics of silicates, while focusing on improving the ability to resist hard water and anti-agglomeration, and maintaining the good water solubility of the product. Through preliminary screening and orthogonal experiments, the dosage of each component was determined and the amplification experiment was carried out. The product CEC≈ 200mg CaO/g sample, solubility > 20×10-2g/mL water, good adsorption performance. Due to the easy availability of raw materials and simple process, it has advantages in terms of performance-price ratio.