Method of manufacturing modified silicon dioxide nanoparticles

US11046832B2 · kind B2 · utility

Assignee

• XIAMEN UNIVERSITY · CN

Inventors

• Lizong Dai · Xiamen, CN
• Chao Liu · Chengdu, CN
• Guorong Chen · Fairborn, US
• Jiamei Huang · Fujian, CN
• Zhongyu Li · Shanghai, CN
• Conghui Yuan · Fujian, CN
• Yiting Xu · Xiamen, CN
• Birong Zeng · Fujian, CN
• Weiang Luo · Fujian, CN

Key dates

• Filing date: Sep 11, 2019
• Grant date: Jun 29, 2021
• Expiry date: Dec 6, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2201/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present disclosure discloses a method of manufacturing silicon dioxide nanoparticles modified by a polymer containing phosphorus and nitrogen, which relates to organic/inorganic hybrid nanoparticles, dispersing SiO2 in an organic solvent, then adding THPS, stirring, and finally adding p-phenylenediamine, reacting, centrifuging, washing, and drying to obtain silicon dioxide nanoparticles modified by a polymer containing phosphorus and nitrogen. The silicon dioxide nanoparticles modified by the polymer containing phosphorus and nitrogen have effects in flame retardancy, strengthening effect of polymer matrixes, and are expected to be widely used in the halogen-free synergistic flame retardancy of polymer materials.