38results about How to "Unique molecular structure" patented technology

The invention relates to the technical field of ink preparation, in particular to a high-blackness ink formula for LED display packaging and an organic silicon modified resin gradient dispersion process. The high-blackness ink formula is prepared from, by mass, 8-20 parts of high-blackness composite pigment, 30-50 parts of organic silicon modified resin, 2-8 parts of polymeric dispersant, 1-5 parts of functional additive and 15-35 parts of high-purity solvent. The organic silicon modified resin provides excellent high and low temperature resistance and yellowing resistance, the unique molecular structure of the organic silicon modified resin is more beneficial to wetting and coating of pigment particles, the three-stage gradient dispersion process is matched with online monitoring, and through stepped increase of the rotating speed and the temperature and ultrasonic assistance, the high-temperature-resistant and anti-yellowing performance of the pigment is improved. Progressive dispersion of the pigment from preliminary wetting to deep coating is realized, and nanoscale uniform distribution and long-term stability of the pigment in resin are ensured. The finally prepared ink has the comprehensive advantages of high blackness, low light transmittance, strong adhesive force, wide process window and the like, and perfectly meets the packaging requirements of high-end LED display.

This application provides a separator and its preparation method, a battery, a battery pack, and an electrical device. The separator includes a base membrane and an aramid coating disposed on at least one side of the base membrane. The aramid coating includes aramid fibers and pores, and any 100μm of the aramid coating... 2 The region satisfies: A ≤ 64; where R is the 100μm 2 The chord length of the holes in the region with a chord length ≥ 0.3 μm, in μm, and R ≥ 0.3 μm; N is the chord length of the 100 μm hole. 2 The number of pores with a chord length ≥ 0.3 μm in the region; x is the diameter of the aramid fiber in nm; u is the diameter of 100 μm. 2 The average diameter of the aramid fibers in the region is expressed in nm. This application can simultaneously improve the high-temperature resistance, structural stability, and thermal safety performance of the diaphragm.

The invention provides an antibacterial hydrogel adhesive as well as a preparation method and application thereof, and belongs to the technical field of composite material preparation. The antibacterial hydrogel adhesive is prepared from silk fibroin, epigallocatechin gallate and gallic acid according to the mass ratio of (2 to 24) to (4 to 24) to 1. Phenolic hydroxyl groups in polyphenol molecules and polar groups of silk fibroin remarkably enhance the intermolecular binding force through the synergistic effect of hydrogen bond-hydrophobic interaction, and the multifunctional silk fibroin polyphenol hydrogel with excellent biocompatibility, high adhesion performance and broad-spectrum antibacterial property is successfully prepared. The antibacterial hydrogel adhesive disclosed by the invention can be firmly adhered to a cesarean delivery wet environment incision, effectively kills group B streptococcus, and prevents formation of uterine diverticulosis due to poor healing caused by incision infection.