5results about How to "Uniform crosslinking" patented technology

The application discloses a preparation method of elastic semiconductor fibers and application thereof, and belongs to the field of flexible electronic materials. In view of the fact that existing semiconductor fibers are difficult to meet the demand of wearable electronics on elasticity and electrical stability, the application proposes a general method containing material compatibility driven synergistic co-spinning, anti-solvent regulated nano-phase separation and swelling induced post-crosslinking, and successfully prepares semiconductor fibers with high elasticity and high electrical performance. The breaking strain of the fiber can be more than 860%, and the fiber still has almost complete elastic recovery ability under a strain of up to 500%. After the introduction of an insulating elastomer, the electrical performance of the composite fiber is even improved. The method is suitable for various conjugated polymer systems, and the obtained elastic semiconductor fibers can be used for constructing biosensors and three-dimensional thermoelectric fabrics, and provides a general elastic semiconductor fiber construction strategy for realizing a wearable electronic system with high performance and strong conformability.

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.

This application provides a photocurable ink, an insulating coating, a battery casing, a method for preparing the same, and a battery. The photocurable ink comprises acrylic resin, an active monomer, and an initiator. The initiator promotes the polymerization reaction between the active monomer and the acrylic resin, thereby enabling the photocurable ink to cure. The initiator includes a deep-curing initiator, a shallow-curing initiator, and an amine co-initiator. The deep-curing initiator has an absorption wavelength of 300nm-400nm. The deep-curing initiator ensures that it can be effectively activated to generate free radicals even in deep regions, achieving deep curing. The shallow-curing initiator forms an excited state under light irradiation. The excited-state shallow-curing initiator abstracts hydrogen atoms from the amine co-initiator, generating active free radicals and amine free radicals. The amine free radicals can react with oxygen to generate peroxide amines, improving oxygen inhibition. During the curing of the photocurable ink, both surface and bottom layers can be cured simultaneously, thereby improving the mechanical properties of the insulating coating.

This invention relates to an ultra-high cell density organ module based on click chemistry photocurable hydrogel, its construction method, and its applications. The construction method includes: providing norbornene-modified high molecular weight hyaluronic acid with a high grafting rate and thiol-modified high molecular weight hyaluronic acid; mixing a photoinitiator, cells, HANb solution, and HASH solution; and rapidly cross-linking and curing the module through a click chemistry reaction after extremely short-term light exposure to form the organ module. This invention utilizes the synergistic effect of the high molecular weight hyaluronic acid host material and the high grafting rate modification to achieve the construction of an ultra-high cell density organ module under ultra-low photoinitiator concentration and extremely short light exposure conditions. The liver module constructed based on this method possesses extremely high cell density, good mechanical properties, and excellent liver function.

This invention relates to a salt spray resistant and anti-aging curing coating and its preparation method, belonging to the field of coating technology. The coating includes modified epoxy resin, ternary nanocomposite filler, composite light stabilizer, hydrophobic eutectic solvent, polysiloxane-modified aromatic amine curing agent, and bio-based polyurethane curing agent. The modified epoxy resin is prepared by reacting bisphenol F epoxy resin, KH-560 silane coupling agent, and tetrabutylammonium bromide, followed by the addition of bi-terminated epoxy silicone oil, 3,3'-dithiodipropionic acid, and p-toluenesulfonic acid, and then by adding pentaerythritol phosphate and antioxidant 1010. The polysiloxane-modified aromatic amine curing agent is prepared by reacting m-phenylenediamine as a matrix, KH-560 silane coupling agent, diphenylsilanediol, and dibutyltin dilaurate. The bio-based polyurethane curing agent is prepared by reacting castor oil-modified polyol, isophorone diisocyanate, dibutyltin dilaurate, dimethylolpropionic acid, and trimethylolpropane.