4results about How to "Stable cross-linked structure" patented technology

This invention discloses a method for preparing a copolymer ultrafiltration membrane with a bonded structure. This method combines in-situ suspension polymerization, click reaction, sol-gel method, and solvent-inducible phase separation to prepare the copolymer ultrafiltration membrane. Excellent hydrophilicity and component stability of the ultrafiltration membrane are achieved through stable covalent bonding between tannic acid and the copolymer. This invention also combines in-situ click reaction and sol-gel reaction to stably introduce high-performance resveratrol into the polymer membrane. Stable bonding of the components is achieved through co-hydrolysis and condensation of the copolymer and the siloxane on the modified resveratrol during the film formation process. The polymerization process of this invention is simple and the structure is tunable. The prepared copolymer ultrafiltration membrane not only has excellent hydrophilicity and antifouling ability but also a stable structure.

The application discloses a silane modified MXene, a preparation method and application thereof, relates to the technical field of functional material preparation, and adopts a HF etching method to prepare the silane modified MXene by etching MAX powder with in-situ generated hydrofluoric acid through mixing of lithium fluoride and hydrochloric acid. The silane modified MXene builds a'molecular' bridge between two-dimensional materials and organic matters by using the functional groups in silane, and can be stably dispersed in organic phase variable materials. The application provides a preparation method of phase change microcapsules without supercooling and with high enthalpy, mixes organic phase variable core materials containing the silane modified MXene and emulsifier powder, and then adds deionized water to form an emulsion, and adopts a stirring shearing method to form a stable water-in-oil (W / O) microemulsion structure; subsequently, a shell material prepolymer solution is added to perform a polymerization reaction, and phase change microcapsules without supercooling and with high enthalpy are obtained.

This invention discloses a method for preparing a copolymer ultrafiltration membrane. This method combines in-situ suspension polymerization, polyaddition reaction, sol-gel method, and non-solvent-induced phase separation to prepare a copolymer ultrafiltration membrane. Excellent hydrophilicity and component stability of the ultrafiltration membrane are achieved through stable covalent bonding between tannic acid and the copolymer. Furthermore, the in-situ polyaddition reaction and sol-gel reaction are combined to stably introduce high-performance tannic acid into the polymer membrane. Stable bonding of each component is achieved through co-hydrolysis and condensation polymerization of the copolymer and the siloxane on the modified tannic acid during the film formation process. The polymerization process of this invention is simple and the structure is tunable. The prepared material not only has excellent hydrophilicity and antifouling ability but also a stable structure, making it a cross-linked copolymer ultrafiltration membrane with antifouling and antibacterial adhesion properties.

The application discloses a kind of foam ceramic-based biofilm carrier and preparation method thereof, and the application is more excellent in dispersibility and compatibility by adding modified lithium bentonite and modified activated carbon, to promote the foam ceramic-based biofilm carrier with better quality, which can significantly increase the biological affinity of the system, help to improve the biofilm efficiency and quality, and after high-energy radiation, more active sites are generated on the surface, enhancing the interaction with silane coupling agent, thereby improving the degree of surface functionalization, with higher application stability;By adding a specific binder, it helps to form a more stable cross-linked structure, and synergistically acts with the reinforcing filler, making the application mechanical properties of the foam ceramic-based biofilm carrier more excellent, and overall, a foam ceramic-based biofilm carrier with better mechanical strength and biological affinity is obtained, which is applied to the treatment of sewage by biofilm method, with excellent biofilm rate, biofilm stability and adhesion, thereby making the sewage treatment effect more significant.