2results about How to "Cross-linked stabilization" 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 invention provides a crosslinked polyethylene composition without pits on a rotational molding surface and a preparation method of the crosslinked polyethylene composition, and belongs to the technical field of high polymer materials. The crosslinked polyethylene composition without pits on the rotational molding surface is prepared from the following components in parts by weight: 100 parts of polyethylene resin, 0.1 to 2 parts of high-temperature organic peroxide, 0.5 to 3 parts of crosslinking aid, 0.05 to 0.5 part of nitroso ether and 0.1 to 1 part of antioxidant. The nitroso ether compound is introduced, high-activity nitroxide free radicals generated by the nitroso ether compound at a high temperature are used for quenching primary free radicals generated by decomposition of peroxide, generation of low-boiling-point byproducts is inhibited, and a rolling part product without pits in the surface of a rolling part can be obtained under the rotational molding condition of high temperature or rapid temperature rise.