Polystyrene-diazonium-salt-based hydrophilic modification method for polyurethane

• Main Authors: QIU SONG, YANG FANGFANG, WEI LINGYONG, LI XINYANG
• Format: Patent
• Language: Chinese; English
• Published: 09.10.2018
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; WORKING-UP

The invention relates to a polystyrene-diazonium-salt-based hydrophilic modification method for polyurethane. The polystyrene-diazonium-salt-based hydrophilic modification method comprises: 1, metering an appropriate amount of a polystyrene diazonium salt solution, and soaking a polyurethane carrier in the polystyrene diazonium salt solution for a certain time at a certain temperature; and 2, taking out the polyurethane carrier after completing the soaking, washing with water, blowing for a certain time with cold air, soaking the polyurethane carrier in an anionic polyelectrolyte solution, carrying out adsorption soaking for a certain time at a certain temperature, taking out, and carrying out blow drying so as to complete the hydrophilic modification process of the polyurethane carrier. According to the present invention, the anionic polyelectrolyte is immobilized on the surface of the polyurethane by using the multifunctional group property and the high reactivity of the polystyrenediazonium salt so as to a