17results about How to "Low mobility" patented technology

This invention provides anthracene methylphenthiazide for use in photosensitive resin compositions, relating to the field of photopolymerization. The invention also includes photosensitive resin compositions containing the anthracene methylphenthiazide, photosensitive dry films containing the anthracene methylphenthiazide, and their applications. The anthracene methylphenthiazide of this invention is photosensitizing and can be used as a photosensitizer in photosensitive resin compositions. It also enhances the adhesion of photosensitive resin compositions to various metal surfaces and exhibits low migration characteristics; it can be widely used in photocuring fields such as dry films, paints, coatings, inks, and molding materials.

This invention relates to the field of semiconductor optoelectronic devices, specifically disclosing a Micro-LED epitaxial structure, which sequentially comprises a substrate, a buffer layer, an N-type GaN layer, a stress relief layer, a first superlattice layer, an electron modulation layer, a light-emitting layer, a hole modulation layer, a second superlattice layer, and a P-type GaN layer; the stress relief layer includes In... α Ga 1‑α The N-layer and the first GaN layer; the first superlattice layer includes In. x Ga 1‑x N-layer and second GaN layer; electronic modulation layer includes Al a Ga 1‑a The light-emitting layer includes an N-layer and a third GaN layer, and the light-emitting layer includes an In layer. y Ga 1‑y N quantum well layer and quantum barrier layer, hole modulation layer including Al b Ga 1‑b N layers and In c Ga 1‑c N-layer, the second superlattice layer includes In z Ga 1‑z The N-layer and the fourth GaN layer have the following parameters: y > x > α, y > z, a ≥ b, and the number of periods in the light-emitting layer is ≤ 8. Implementing this invention can improve the luminous efficacy and luminous uniformity of Micro-LEDs at low current densities.

The present application relates to a kind of synergistic flame-retardant low melting point polyester chip for polyester sheath-core and its preparation method, the melting point of product is reduced by introducing part of asymmetric isomer of terephthalic acid in esterification process, while introducing part of symmetric structure alcohol with small difference with ethylene glycol, the chain regularity is less damaged, a small amount of introduction will not significantly damage the crystallization ability of product while reducing the melting point. After esterification, by means of blending and co-melting and alcoholysis repolymerization, flexible chain segment (‑O‑(CH2)4‑O‑) with fast crystallization speed is introduced to improve the crystallization performance of product, and finally the modified synergistic flame retardant is added. Nitrogen, phosphorus and silicon elements are introduced into the product chain segment during polycondensation reaction, and a triple protection system covering condensed phase, gas phase and interface is formed through the multidimensional complementary action of the three elements during combustion. Through the above steps, polyester chip for polyester sheath-core with high flame retardancy, low melting point and high crystallinity is finally synthesized.

The application discloses a kind of low-carbon cementing material by waste incineration fly ash excited ore powder and preparation method thereof, by weight percentage, including the following components: modified waste incineration fly ash 8~12%, ion complex component 1~3%, composite shrinkage component 2~6%, ore powder 55~65%, water 23~28%.Preparation method includes the following steps: S1, preparation modified waste incineration fly ash, ion complex component, composite shrinkage component;S2, modified waste incineration fly ash, ion complex component, composite shrinkage component, ore powder, mixing water, fully mixed and stirred evenly, can obtain the low-carbon cementing material by waste incineration fly ash excited ore powder described in the application.In the aspect of component design, the application is environmentally friendly, low cost, in the performance aspect, the flow rate can be adjusted, the mechanical properties are excellent, the volume shrinkage is small.

The application discloses a spherical aluminum nitride silicon grease high-thermal-conductivity interface material composition and belongs to the technical field of thermal-conductivity interface materials.The spherical aluminum nitride silicon grease high-thermal-conductivity interface material composition comprises, in terms of weight parts, 50-80 parts of spherical aluminum nitride and 50-100 parts of modified silicon oil, the modified silicon oil is silicon oil grafted with adamantane molecules and fluorine-containing alkyl groups on the side chain, and the spherical aluminum nitride is prepared by using aluminum powder with low, medium and high particle sizes, wherein the spherical structure guarantees the fluidity of the silicon grease, the introduction of the adamantane molecules and the perfluoroalkyl molecules improves the heat resistance of the silicon oil and reduces the migration rate of the silicon oil, different particle sizes of the spherical aluminum nitride are used in combination for compounding, the filler with a smaller particle size can fill the gaps between the fillers with a larger particle size, a more perfect thermal-conductivity channel is constructed, the gap rate between the filler particles is greatly reduced, and the thermal-conductivity performance of the material is improved.

The application relates to the technical field of solid waste treatment and building materials, and discloses a modified sludge solidifying agent and a preparation method thereof, the solidifying agent contains modified aggregates 15-28 parts, a composite cementing agent 55-70 parts, an efficient water absorption modifier 6-12 parts, an organic polymer modifier 2-5 parts and early strength additives 1-3 parts in terms of weight fractions, and the components are mixed through proportioning and a segmented preparation process. The modified aggregates construct a framework support, the composite cementing agent provides hydration cementing action, the efficient water absorption modifier realizes rapid dehydration and heavy metal adsorption, the organic polymer modifier optimizes interface combination, and the early strength additives improve early strength. The application takes industrial solid waste as a main raw material, has high solid waste utilization rate, is low-carbon and environment-friendly, can quickly reduce the water content of sludge, significantly improves the mechanical properties and durability of a solidified body, effectively stabilizes heavy metals, and has a wide application prospect.

The invention relates to the technical field of new energy, in particular to a composite current collector assembly and a preparation method thereof, a pole piece assembly and a preparation method thereof and a battery. The composite current collector assembly comprises an insulating layer, a conductive layer and a weld-aid coating, the conductive layer is located on at least one side of the insulating layer, the conductive layer comprises an electrode active area and a tab blank area connected with the electrode active area, and the weld-aid coating is located on the conductive layer corresponding to the tab blank area. The raw materials of the weld-aid coating comprise modified rosin, organic acid, organic amine, a wetting agent, a surface active agent and a corrosion inhibitor. By selecting the raw materials of the weld-aid coating, the traditional transfer welding procedure can be omitted, the problem that the welding process is tedious is solved, and the welding quality is good.

The application discloses a high-mobility silicon carbide N-type LDMOS device with reduced on-resistance, which comprises an N-type substrate, a P-type epitaxial layer arranged on the N-type substrate, an N-type well region, a first P-type heavily doped region, a first N-type heavily doped region, a second P-type heavily doped region connected to a source, a second N-type heavily doped region connected to a drain arranged in the N-type well region, the first P-type heavily doped region, the first N-type heavily doped region and the second P-type heavily doped region being connected, an oxide layer arranged on the surface of the second N-type heavily doped region, the N-type well region, the first P-type heavily doped region, the first N-type heavily doped region, the second P-type heavily doped region and the P-type epitaxial layer, a polycrystalline silicon trench gate serving as a gate of the device and extending into the P-type epitaxial layer, and an N-type buried layer arranged in the P-type epitaxial layer, one end of the N-type buried layer being connected to a channel of the device and the other end being connected to the N-type well region.

This invention discloses a type of tetrazolium-based energetic coordination polymer-filled ferrocene derivative composite combustion rate catalyst. The composite combustion rate catalyst is prepared by filling the nanopores of an energetic coordination polymer synthesized with a tetrazolium compound as a ligand and manganese metal ions with a ferrocene derivative. The preparation method involves dissolving a tetrazolium compound and a manganese salt in a mixed solvent of methanol and acetone, and then adding the ferrocene derivative. The ferrocene derivative fills the nanopores of the energetic coordination polymer during the reaction of manganese metal ions and the ligand, thereby obtaining the composite combustion rate catalyst. The composite combustion rate catalyst of this invention exhibits good catalytic performance, significantly improving the migration problem of ferrocene-based combustion rate catalysts, and its preparation method is simple and easy to scale up.

The present application relates to a kind of photocuring composition and its preparation method and application, the photocuring composition includes the following components: resin, active monomer and photoinitiator.The photocuring composition described in the present application has low photoinitiator mobility, good solubility of photoinitiator in monomer, low energy required when the photocuring composition is cured, high adhesion on the surface of various substrates such as plastic, metal and other difficult to adhere substrates, and the photocuring composition has low odor during curing process, low yellowing degree after curing, high stability and repeatability of the system, and excellent comprehensive performance.

The invention provides conductive paste for a solar cell, a preparation method of the conductive paste and the solar cell. The preparation method of the conductive slurry comprises the steps that conductive particles are provided, each conductive particle comprises a copper core, a compact silver layer covering the copper core, a loose middle silver layer covering the compact silver layer and a reinforced outer silver layer covering the loose middle silver layer, and the silver grain size of the loose middle silver layer is larger than that of the reinforced outer silver layer; providing glass powder and an organic carrier; and mixing and stirring the conductive particles, the glass powder and the organic carrier to obtain the conductive paste. Through mutual cooperation of the compact silver layer, the loose middle silver layer and the reinforced outer silver layer, the bonding force of the conductive particles and the silicon wafer is improved, the silver ion mobility is reduced, the reliability of the solar cell is improved, and the service life of the solar cell is prolonged.

The application discloses a diamond field effect transistor and a preparation method thereof, and the diamond field effect transistor comprises a diamond substrate, a single-crystal diamond epitaxial film, a source electrode, a drain electrode, a stress regulation film and a gate electrode; the single-crystal diamond epitaxial film is arranged on the diamond substrate; the single-crystal diamond epitaxial film is provided with a hydrogen terminal region and an oxygen terminal region, the hydrogen terminal region is a channel region composed of a two-dimensional hole gas conductive layer; the source electrode and the drain electrode are arranged at two ends of the channel region respectively; the stress regulation film is arranged on the source electrode, the drain electrode and the channel region without the source electrode and the drain electrode; and the gate electrode is arranged on the stress regulation film and the oxygen terminal region. The stress regulation film is introduced in the application; based on the stress regulation film, the carrier mobility can be enhanced through stress regulation, and the performance of the conductive channel is not damaged.

The invention discloses a preparation method of a PVC plastic composite pipe, and belongs to the technical field of plastic pipes. The preparation method is used for solving the technical problems that in the prior art, when polyvinyl chloride is prepared into a pipe, the processing fluidity is poor, and when a coupling agent modified inorganic flame retardant is doped into a PVC resin material, migration is prone to occurring, and the heat stability and the smoke suppression effect are poor. The preparation method of the PVC plastic composite pipe comprises the following steps: carrying out melt extrusion on modified polyvinyl chloride, a resin compound and a flame-retardant smoke suppressant to prepare the PVC plastic composite pipe, the resin compound is obtained by reacting polyvinyl alcohol, epoxy resin E-51, epoxy resin E-44 and polysulfide rubber; the flame-retardant smoke suppressant is obtained by coating a double-layer metal hydroxide with an iron-pyridine complex and then loading the double-layer metal hydroxide on activated carbon. The modified polyvinyl chloride reacts with the resin compound, so that the processability and the smoke suppression effect are improved; the flame-retardant smoke suppressant contains a multi-layer structure and multiple distributed active metal sites.

This application provides a bio-based chain extender and its application. The bio-based chain extender includes the bio-based compounds 2,5-furandicarboxaldehyde dioxime and / or 5-hydroxymethyl-2-furancarboxaldehyde dioxime. Using these as bio-based chain extenders, modified polyurethanes with antibacterial and antifungal properties can be synthesized. This imparts long-lasting, stable, and broad-spectrum antibacterial and antifungal properties to polyurethane materials, eliminating the need for additional antibacterial agents. This avoids problems such as environmental pollution, short antibacterial time, and unstable antibacterial performance caused by antibacterial agent migration during the use of polyurethane materials. In particular, this bio-based chain extender is bio-based, safe, and environmentally friendly, and has a significant effect on the antibacterial and antifungal modification of polyurethane materials, showing broad application prospects in medical materials, public facilities, and health protection.

The application relates to an acetyl thio proline anthracene methyl ester for a photosensitive resin composition and application thereof, and relates to the field of photopolymerization. The acetyl thio proline anthracene methyl ester has photosensitivity, can be used as a photosensitizer in a photosensitive resin composition, has the effect of improving the adhesion of the photosensitive resin composition on various metal surfaces, has good compatibility with polymerized monomers and solvents, has a low migration characteristic, and can be widely applied to the fields of dry films, paints, coatings, inks and molding materials and the like.

This invention discloses a cross-linked polyethylene insulation material for medium-voltage DC cables and its preparation method. By weight, it comprises the following raw materials: 100-110 parts LDPE, 5-8 parts modified filler, 0.4-0.6 parts antioxidant, 0.2-0.3 parts cross-linking aid, and 0.4-0.7 parts initiator. The modified filler, prepared by a specific method, combined with an optimized cross-linking and antioxidant system, significantly improves the overall performance of the insulation material. This modified filler, through the synergistic effect of its deep trap energy levels in the core and the shallow trap energy levels of the outer organic molecules, increases the DC resistivity and breakdown field strength of the material. Simultaneously, the flexible long-chain structure grafted onto the filler surface improves its interfacial compatibility with the polyethylene matrix, giving the material excellent mechanical properties that meet the stringent requirements for long-term safe and stable operation of medium-voltage DC cables.

The application relates to the technical field of silver conductive paste preparation, in particular to a high-purity silver conductive paste premixing device with low migration and high stability, which solves the problem that the silver powder cannot be uniformly wetted due to the improper discharging mode, which leads to the isolation state of dry powder wrapping wet material, and finally reduces the quality of the silver conductive paste, the discharging assembly and the lump-eliminating assembly are arranged on the kettle cover, the discharging assembly is driven to rotate and lift by airflow, the silver powder is uniformly discharged in a ring shape and is accelerated to be discharged, the conical plate of the lump-eliminating assembly is matched with the internally tangent ring and the externally tangent ring rotating in the opposite direction, the cutting plate and the cutting knife are used to disperse the lumped materials, the materials are further dispersed by centrifugal force to the kettle wall, the stirring rod and the grinding rod of the stirring assembly are used for fully mixing, the air extraction pipe is connected with a vacuum pump to realize vacuum defoaming, the overall structure avoids material agglomeration, uniformly disperses the silver powder, inhibits ion migration, and improves the premixing quality of the paste.