4results about How to "Uniform modification" patented technology

The application discloses a kind of plasma jet array devices for large size epoxy surface modification, including frame, tank, gas cylinder for loading inert gas, aperture network, high voltage power supply and metal insert;Tank and metal insert are fixed on frame, tank is flat tank and its slot is formed with jet airway for placing and fixing epoxy insulation, the bottom and side of tank are provided with jet spout arranged in array, jet spout is connected by gas inlet pipe, gas inlet pipe is arranged in the inside of side plate and bottom plate of tank;Aperture network is connected on jet spout and connects high voltage power supply, tank is grounded by wire;Metal insert is inserted above epoxy insulation, metal insert is grounded by wire.The application also discloses the use method applied to the above device.Adopting the application, the surface of large size epoxy insulation can be quickly and uniformly modified, and the charge release capacity is improved.

The invention relates to the technical field of medical instruments, in particular to a heparin coating based on material surface ammonification modification and a preparation method thereof, and the preparation method at least comprises the following steps: carrying out ultrasonic pretreatment on a base material with purified water, and drying for later use; the preparation method comprises the following steps: performing amination modification on a base material subjected to ultrasonic pretreatment by adopting an ammoniation reagent solution, and immersing the base material into a heparin solution to prepare the base material with a heparin coating on the surface. The surface of the material is subjected to amination modification by adopting a micromolecular ammoniation reagent and / or a macromolecular ammoniation reagent system, complex pretreatment such as plasma and ultraviolet rays does not need to be carried out on a base material, specific functional group activation does not need to be carried out on heparin, and the heparin is directly reacted after being subjected to ammoniation modification; the stable covalent grafted heparin anticoagulation coating can be formed, the anticoagulation time is prolonged, and the long-term implantation requirement is met.

The application provides a direct injection type asphalt modifier, a dry modified asphalt mixture and a preparation method thereof, and belongs to the technical field of new road materials, and is used for solving the problems of dust pollution, material segregation, poor mixture uniformity and damaged road performance caused by the "post-added mineral powder" process in the application process of the existing direct injection type asphalt modifier. The direct injection type asphalt modifier is in a granular form, and comprises the following components in parts by weight: 10-20 parts of polyurethane, 1-5 parts of asphalt and 50-80 parts of mineral powder; the polyurethane is obtained by mixing and reacting a polyurethane prepolymer and a polyol component, and the molar ratio of NCO groups to OH groups in the polyurethane is 1.01-1.1:1. The direct injection type asphalt modifier combines the polymer component (polyurethane) for modification and the mineral powder component for filling, can perform the dual functions of "asphalt modification" and "mineral powder filling", and avoids the step of "post-added mineral powder".

A polymer abrasive modification reaction device comprises a support and a reaction kettle mounted on the support, an upper supporting shaft vertically penetrating through the reaction kettle is rotatably mounted at the top of the reaction kettle, and a lower supporting shaft vertically penetrating through the reaction kettle is rotatably mounted at the bottom of the reaction kettle. An upper supporting pipe which is transversely arranged is installed on the upper supporting shaft in the reaction kettle, a lower supporting plate which is transversely arranged is installed on the lower supporting shaft in the reaction kettle, side supporting pipes which are vertically arranged are fixedly connected between the two sides of the upper supporting pipe and the two sides of the lower supporting plate, and a water inlet channel which is communicated with the upper supporting pipe is arranged in the upper supporting shaft. The side supporting pipe is communicated with the upper supporting pipe, and a plurality of water outlet holes are further formed in the side portion of the side supporting pipe. A plurality of ultrasonic vibrators are also mounted between the side supporting pipes; and a driving device for driving the lower supporting shaft to rotate is mounted at the bottom of the reaction kettle. The device can realize efficient stirring and heating, and effectively solves the problems of insufficient stirring and non-uniform modification of a traditional device.