Jiangsu Meiside Chemical Co., LTD., Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, applied for "A bio-based organosilicon surfactant and its preparation Method and application", public number CN202410684862.4, the application date is May 2024.

The invention discloses a bio-based organosilicon surfactant and a preparation method and application thereof. The surfactant has the following structure: Si (CH3) 3‑O‑[Si (CH3) 2‑O]a‑[Si (CH3) R1‑O]b‑[Si (CH3) R2‑O]c‑Si (CH3) 3; With hydrophobic siloxane as the main chain and hydrophilic polyether as the combs of the side chain, the polyether of the side chain is introduced into bio-based substances through epoxy ring-opening reaction grafting, so as to adjust the hydrophilic and lipophilic of the silicone surfactant to a certain extent, and improve its surface activity. The thermal conductivity of polyurethane foam can be decreased, the flow index of polyurethane foam can be increased, and the thermal insulation and flow performance of polyurethane foam can be improved. In addition, the synthesis provides a new synthesis route for the development of bio-based foam stabilizer. The preparation method is simple, easy to operate and suitable for industrial production.