4results about How to "Improve light curing efficiency" patented technology

The present invention discloses a microgel based on acryloyl gelatin, a preparation method and an application thereof. A microfluidic method is used in combination with an online photopolymerization reaction to prepare an acryloyl gelatin microgel in high throughput, and the application thereof in the encapsulation of bioactive substances. First, acryloyl gelatin microdroplets are prepared in high throughput using droplet microfluidics technology, and then a visible light source matched with a photoinitiator is placed above the microfluidics pipeline to achieve online continuous production of GelA microdroplets and solidify to form microgel particles. For online encapsulation of substances, it is only necessary to pre-mix the active substances with the aqueous phase. The present invention combines the advantages of droplet microfluidics technology for high throughput production of droplets of uniform size, and also has the advantages of GelA's low viscosity, high photopolymerization efficiency and good biocompatibility. It can be used for high-efficiency and high-quality production of biocompatible microgels. The preparation process is also biocompatible and can meet the needs of online encapsulation of biomolecules and cells.

The utility model belongs to the technical field of optical fiber processing equipment, in particular to optical fiber connector curing equipment, which comprises a workbench and a UVLED (Ultraviolet Light Emitting Diode) light source arranged above the workbench, and further comprises a clamping mechanism which comprises a movable seat movably connected to the workbench; the fixed vertical plate is fixed on the top surface of the movable seat; the multiple pneumatic clamping jaws are distributed in the horizontal direction at equal intervals and rotationally connected to the fixed vertical plate; the rotary power assembly is used for driving the pneumatic clamping jaw to rotate; the translation power assembly is used for driving the clamping mechanism to move horizontally; according to the utility model, through the rotation of the pneumatic clamping jaw and the translation of the clamping mechanism, the optical fiber connector is exposed under the UVLED light source in all directions, the irradiation blind area is eliminated, and the photocuring efficiency is obviously improved.

This invention belongs to the field of photocurable polymer materials technology, specifically relating to a high-strength, wear-resistant resin composition and artificial nails. The composition comprises the following components in the indicated proportions: 100 parts by weight of modified polyurethane acrylate, 50-150 parts by weight of reactive diluent monomer, and 1-10 parts by weight of photoinitiator. The modified polyurethane acrylate is obtained by first-step carbamate reaction of cyclohexanehexyl alcohol with alicyclic or aromatic diisocyanate to obtain an isocyanate-terminated oligomer, followed by a second-step carbamate reaction with (meth)acrylate hydroxyl ester, resulting in a hexafunctional polyurethane acrylate with a clustered dispersion structure. Compared to conventional multifunctional polyurethane acrylates, the resulting composition exhibits higher photocuring efficiency, and the artificial nails prepared after curing have higher strength and wear resistance.

The present invention relates to the field of precast concrete structures, and in particular to a high-strength steel strand and a suspension point for its application. The suspension point has a simple structure, is easy to manufacture and install, and has high construction efficiency. 2‑ The intercalated zinc-titanium double hydroxide layer serves as an anti-corrosion layer, and a zinc-titanium organic framework is generated in situ on the anti-corrosion layer; self-healing hexamethylene diisocyanate capsules are synthesized; a hydrophobic coating is prepared using 2,6-diaminopyridine as a chain extender and hexamethylene diisocyanate capsules as a monomer. When coated on a surface pretreated substrate, the zinc-titanium organic framework is cross-linked with a polyurethane prepolymer to generate a self-healing polyurethane elastomer based on coordination bonds; dopamine hydrochloride has a self-polymerization effect, and the introduction of fluorinated vinyl polysiloxane greatly improves the hydrophobicity of the steel strand; photocuring is used to improve the bonding force between the inorganic-organic coating and the substrate, thereby improving the various performances of the steel strand.