Preparation method of modified polyurethane filler

• Main Authors: CHEN ZHENBIN, XIE PENGCHAO, WANG ZONGPING, LI QINGBAO, LEI YINGJUN, CHENG YUJIE
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to the technical field of polymer carrier modification, in particular to a preparation method of a modified polyurethane filler. The preparation method comprises the following steps: mixing a peroxide solution and a ferrous salt solution, and adjusting the pH value to obtain a mixed solution; and immersing the polyurethane filler in the mixed solution for modification to finally obtain the modified polyurethane filler. According to the novel polyurethane filler obtained through the modification method, the biocompatibility is greatly improved, compared with a traditional polyurethane filler, the novel polyurethane filler has the larger specific surface area, the effect of promoting microorganisms to adsorb and grow on the surface of the filler to form a biological membrane is achieved, and the wastewater treatment efficiency of the novel polyurethane filler used in a biological membrane method can be improved. 本发明涉及高分子载体改性技术领域，尤其涉及一种改性聚氨酯填料的制备方法。本发明将过氧化物溶液和二价铁盐溶液混合，对pH进行调节后得到混合溶液；再将聚氨酯填料