4results about How to "Good thermal response" patented technology

The invention discloses a double-P flame retardant, an epoxy composite material and application of the epoxy composite material in an IV-type hydrogen storage cylinder, relates to the technical field of flame-retardant materials, and solves the problem that the existing epoxy resin for the IV-type hydrogen storage cylinder is difficult to consider strength, toughness and flame-retardant characteristics at the same time. The preparation method comprises the following steps: reacting a green, environment-friendly and renewable bio-based raw material vanillin with a catalyst triethylamine to obtain a first-step intermediate, then reacting with a biomass amine substance to obtain a Schiff base intermediate, and finally reacting with DOPO to synthesize the double-P flame retardant. And preparing the epoxy composite material from the flame retardant and epoxy resin. The reaction process is convenient to operate, the preparation method is simple, a new thought is provided for expanding the application of epoxy resin in the field of high-performance materials, a relatively suitable winding layer material is provided for hydrogen energy, especially IV type hydrogen storage cylinders, and the winding layer material is suitable for industrial production.

This invention relates to the field of medical high-fidelity training model technology, and discloses a multi-vascular network biomimetic hemostasis model and method for junctional wounds. The model includes a biomimetic model, a blood bank system, a control system, and a temperature control unit. A biomimetic multi-vascular network is embedded in the junction area of ​​the biomimetic model, and a biomimetic wound opening is provided at the corresponding position of the biomimetic multi-vascular network. The input end of the biomimetic multi-vascular network is connected to the output end of the blood bank system, and the output end of the biomimetic multi-vascular network is located inside the biomimetic wound opening. The temperature control unit is located at the input end of the biomimetic multi-vascular network. A pressure sensor is provided in the biomimetic wound cavity wall of the biomimetic wound opening, and hemostatic material is filled inside the biomimetic wound opening, with the hemostatic material in contact with the pressure sensor. The control terminal of the control system is electrically connected to the blood bank system, the temperature control unit, and the pressure sensor. This invention can realistically simulate the bleeding process of penetrating and blind-tube injuries in the junctional wound of the simulation model, facilitating simulation training.

The invention discloses stable selenol and poly (selenourethane) thereof, preparation and recovery methods and application, selenol is stable micromolecules with at least two degrees of functionality, and poly (selenourethane) is prepared by directly participating in polymerization of selenol. The selenol overcomes the limitation that selenium-containing small molecules are unstable in the environment, and the polyselenourethane has rich and adjustable performance, is stable in structure, simple in preparation method, high in reaction speed, few in side reaction in the polymerization process, high in molecular weight, suitable in polydispersity coefficient and excellent in optical performance, and can be applied to the field of electronic devices. Good mechanical properties are achieved in room-temperature and low-temperature environments; meanwhile, the polyselenourethane has good thermal responsiveness and oxygen responsiveness, chemical recovery of selenol can be achieved under the simple heating condition, the polyselenourethane can be degraded by reacting with oxygen, active oxygen and the like in the service environment, meanwhile, selenium-containing components capable of being biologically utilized are released, and the selenium-containing components can be recycled. And a new opportunity is provided for development of organic selenium chemistry and selenium-containing polymers and internal and external application of organisms.

The invention relates to the technical field of platinum-based thin films, in particular to an Hf / Pt / Hf / YSZ multi-layer thin film with high-temperature resistance stability and a preparation method of the Hf / Pt / Hf / YSZ multi-layer thin film. The invention provides an Hf / Pt / Hf / YSZ multi-layer thin film with high-temperature resistance stability performance. The Hf / Pt / Hf / YSZ multi-layer thin film comprises a YSZ transition layer, an Hf strengthening layer, a Pt resistance layer and an Hf protection layer which are sequentially stacked on a silicon nitride substrate from bottom to top. The Hf / Pt / Hf / YSZ multilayer thin film has excellent high-temperature resistance stability.