4results about How to "Improve Surface Curing" patented technology

The invention relates to an oxime ester compound, a photocuring material and application, and belongs to the field of photoinitiators. The oxime ester compound is a compound with a structure as shown in a formula (1): # imgabs0 #, wherein R3 in the formula (1) is C6-C20 heteroaryl containing 1-3 Ns. The nitrogen-containing heterocyclic ring is introduced into the original structure, so that the conjugacy of molecules is enhanced, the ultraviolet absorption peak is subjected to red shift, and the compound is more suitable for an LED light source; in addition, due to the introduction of the nitrogen-containing heterocyclic ring, the solubility of molecules in a solvent is improved, so that the photoinitiator is dispersed more uniformly in the solvent, the system is clearer, the photosensitivity of the photoinitiator is improved, and a better effect can be realized by using a small amount of the photoinitiator.

The invention discloses a composite proton exchange membrane based on large-area single-layer nano-porous graphene Nafion and a preparation method of the composite proton exchange membrane. The preparation method comprises the following steps: firstly, performing plasma etching to obtain a graphene / copper foil sample; spin-coating Nafion latex on the graphene surface of the graphene / copper foil sample; the spin-coated graphene / copper foil sample is dried and cured, a Nafion film is hot-pressed on the spin-coated surface of the graphene sample, and a Nafion / graphene / copper foil sample is obtained; the method comprises the following steps: etching a Nafion / graphene / copper foil sample in an etching solution, then washing the sample, and completing etching, cleaning and airing of the residual copper foil; the Nafion latex is continuously spin-coated; the spin-coated Nafion / graphene sample is dried and cured, and then the spin-coated Nafion / graphene sample and a Nafion thin film are subjected to hot-pressing compounding; and soaking the Nafion / graphene / Nafion sample in an acid solution, and airing to obtain the proton exchange membrane based on the large-area single-layer nano-porous graphene Nafion composite. According to the invention, the bottleneck of performance improvement caused by insufficient selectivity of the proton exchange membrane and low proton transmission efficiency of the intrinsic graphene is effectively solved.

The invention discloses a radiation-curable adhesive, and aims to provide a novel benzophenone-terminated polyurethane resin which mainly overcomes the defects of poor thermal stability and difficult surface curing of the existing unsaturated group-terminated polyurethane resin, and the radiation-curable adhesive is a reaction product of components (I), (II) and (III): at least one polyisocyanate (I); at least one polyol compound (II) containing at least two polyol compounds capable of reacting with isocyanate groups; and (III) at least one compound containing a benzophenone capable of reacting with an isocyanate group; belongs to the technical field of novel polymer materials.

Photoinitiator comprising 2 to 6 monoacylphosphine oxide moieties, characterized in that the monoacylphosphine oxide moieties are connected to each other via their acyl groups and at least 2 monoacylphosphine oxide moieties have a different chemical structure in the phosphine oxide moiety.