12results about How to "Improve interfacial bond strength" patented technology

The present application relates to the technical field of ceramic coating, especially to a micro-nano structure ceramic coating and its application on the reaction furnace of zircon sand boiling chlorination method, aiming at solving the problems of weak bonding force between the existing protective coating and the substrate, poor thermal shock resistance and easy failure in long-term high-temperature chlorine environment; the present application constructs a nano-wire reinforced micro-nano structure transition layer on the surface of porous corundum brick substrate in situ, and sequentially constructs a lanthanum phosphate bonding layer and a yttrium stabilized zirconium oxide barrier layer on the transition layer; the design utilizes the mechanical anchoring effect of micro-nano structure and the strong chemical bonding ability of lanthanum phosphate to realize the firm combination of the coating and the substrate; the dense characteristics of the zirconium oxide layer provide ultimate protection; the method significantly improves the overall anti-peeling ability and long-term corrosion resistance of the coating system.

This invention discloses a self-healing, anti-corrosion, and cooling coating and its preparation method. The preparation method includes: TiO2 surface activation treatment; in-situ construction of a mesoporous silica shell and loading of a corrosion inhibitor; surface silane modification; and coating and curing after blending the obtained filler with resin and curing agent. The coating consists of a polymer resin matrix and a multifunctional core-shell nanocomposite material uniformly dispersed therein; the composite material has a three-level structure of core-shell-interface layer: titanium dioxide as the core, mesoporous silica loaded with corrosion inhibitor as the functional shell, and a silane coupling agent as the interfacial compatibility layer. Through multi-level structural design, this invention enables a single filler to simultaneously achieve high solar reflectance, high infrared emission, and intelligent release of corrosion inhibitors. The coating combines a physical barrier, active corrosion prevention, and radiation cooling triple protection mechanism, and can be widely used for long-term protection of outdoor metal or non-metal substrates.

This invention belongs to the field of inorganic cementitious materials technology, and discloses a magnesium oxysulfate gel modifier and its modified gel preparation method. The modified magnesium oxysulfate gel contains silica fume, organosilicon waterproofing powder, humic acid, functional additives, nanocomposite particles, sucrose, and ethylene glycol monobutyl ether. After modification, the mechanical strength of the magnesium oxysulfate gel is improved, and its fire resistance, environmental resistance, and antibacterial properties fully meet the standards, solving the pain points of traditional magnesium oxysulfate materials. It can be used in building components such as fireproof door core panels, firewalls, and fireproof partitions. Fireproof door panels made using the modified gel achieve a fire resistance limit of Class A, with improved interfacial bonding strength, excellent impact resistance and weather resistance, and are suitable for multiple scenarios. The entire process is free of VOCs exceeding the standard, and combustion produces no toxic gases, meeting green building material standards and contributing to the development of ultra-low energy consumption buildings. It is suitable for low-temperature and frigid regions, high-temperature industrial environments, high-humidity antibacterial scenarios, and projects with high environmental protection requirements. It constructs a four-dimensional innovation system of "nanoparticle micro-enhancement - functional additive environmental adaptation - traditional component performance optimization - door panel structure synergy", realizing integrated performance improvement of "materials - core panels - door panels".

The application provides a polymethyl methacrylate product and a preparation method thereof. The preparation method of the polymethyl methacrylate product comprises the following steps: S1. mixing a resin matrix, a toughening agent, an antioxidant and a light stabilizer to obtain a mixture; the resin matrix comprises a polymethyl methacrylate resin; the toughening agent comprises a core-shell structure toughening agent and a polyester-based toughening agent; the core-shell structure toughening agent comprises a core and a shell layer; the core comprises polybutyl acrylate, and the shell layer comprises polymethyl methacrylate; S2. melt blending, extruding and granulating the mixture, and drying, injection molding, cooling and annealing. In the application, the core-shell structure toughening agent and the polyester-based toughening agent can synergistically improve the toughening effect.

The invention discloses a preparation method for constructing a multistage micro-nano heterostructure based on combination of a laser melting deposition process and a laser shock peening means, which comprises the following steps of: printing by using dry TC4 alloy powder, accumulating a printed TC4 metal printing layer to form a TC4 metal micron layer, performing low-power laser shock peening on part of the TC4 metal micron layer to form a TC4 metal submicron layer, and forming the multistage micro-nano heterostructure. A TC4 metal printing layer is printed on the submicron layer and subjected to high-power laser shock peening to form a TC4 metal nano layer, a TC4 metal printing layer is printed on the nano layer and subjected to low-power laser shock peening to form a TC4 metal submicron layer, printing and cyclic operation are continued on the submicron layer to form a sample, and the sample is obtained through annealing treatment. According to the preparation method disclosed by the invention, a micron layer-nano sandwich composite layer-micron layer multi-stage micro-nano heterostructure is formed, crack propagation is effectively hindered, and the elongation of the material is improved, so that alloy strength and plasticity synergistic strengthening is realized.

This invention discloses an organo-bentonite flame retardant synergist and its preparation method, belonging to the field of flame retardant materials technology. The preparation method includes: preparing calcium-based bentonite into a slurry, adding sodium carbonate for sodium purification; subjecting the purified slurry to high-pressure homogenization and flake removal; adding an organic modifier composed of octadecyl quaternary ammonium salt and dioctadecyl quaternary ammonium salt to the flaked slurry for intercalation modification, drying and dispersing; and adding end-functionalized polysiloxane to the organo-bentonite powder for surface coating treatment, thus obtaining the final product. The organo-bentonite flame retardant synergist prepared by this invention has a nanoscale layered structure and excellent compatibility with polyolefin matrices. When this synergist is combined with aluminum hydroxide for use in polyolefin composites, it can reduce processing torque, increase tensile strength, improve the limiting oxygen index to achieve UL-94V-0 rating, and simultaneously promote the formation of a continuous and dense expanded char layer, effectively inhibiting dripping.

This invention provides a composite cementitious material with high rheological properties, its preparation method, and concrete, comprising an active admixture, 40%–60% ordinary Portland cement, 20%–35% modified marble powder, and 0.8%–2% functional admixtures. The modified marble powder is obtained by surface modification treatment of marble powder with a silane coupling agent and a polycarboxylate superplasticizer, effectively solving the problem of marble powder agglomeration and ensuring uniform dispersion in the cementitious system. This significantly optimizes the rheological properties of the paste, improving fluidity and pumpability. The synergistic effect of cellulose ether and air-entraining agent in the functional admixtures further enhances the material's water retention and anti-segregation stability. The cementitious material prepared by this invention possesses both excellent mechanical properties and durability, and the concrete prepared with it exhibits good workability, dense structure, and reliable long-term performance. Simultaneously, this technology achieves high-value-added resource utilization of marble waste, reduces cement consumption and carbon emissions, and aligns with the direction of green building materials and sustainable development.

This invention discloses a cleaning device for tile bonding surfaces, relating to the field of tile cleaning technology. This invention addresses the shortcomings of existing technologies, which cannot comprehensively clean the gaps and sidewalls of tile bonding surfaces on walls, and suffer from problems such as high probability of glaze damage and incomplete cleaning. On one hand, through the coordinated operation of the walking positioning module and the grout cleaning execution component, it achieves refined cleaning and interface activation of the entire depth and surface of the tile bonding surface, thoroughly removing various impurities that affect the adhesion performance of the grout. On the other hand, through a directional closed dust suction module, it achieves source control and real-time collection of grout cleaning dust, preventing the spread of dust during operation and optimizing the construction environment. An angle-adjustable adsorption and fixing module enables stable self-fixation of the device in various scenarios such as walls and corners, eliminating the need for continuous manual support, significantly reducing work intensity, and broadening the applicable scenarios of the device.

The application discloses a stress luminescence type chemical anchoring fog seal layer material with blackening and wear resistance functions and a construction method thereof, and relates to the technical field of pavement engineering pre-maintenance. The fog seal layer material is prepared from near-neutral non-ionic emulsified asphalt as a stable reaction matrix, high-carbon black content activated latex slurry is introduced to realize blackening and network enhancement of the asphalt pavement, the interface bonding and mechanical-optical response triggered by traffic load are realized through core-shell structure stress luminescence particles, and the interface chemical anchoring reaction is triggered when the demulsification of the interface catalytic anti-skid aggregate. The components play a synergistic effect in the storage, construction and service stages, and finally form a reinforced seal layer with stress luminescence visual guidance, high blackness, high anti-skid and long-term durability functions on the pavement, and the application is especially suitable for improving the road traffic safety in dark environments such as tunnels and road sections without street lamps.

This invention discloses an allyl polyaryl ester modified bismaleimide resin, its preparation method, and its applications, comprising the following steps: First, allyl polyaryl ester is prepared by solution polycondensation. Then, allyl polyaryl ester and bismaleimide are dissolved in an organic solvent to prepare a prepreg. Next, liquid crystal polymer fiber cloth is impregnated in the prepreg and dried to prepare a prepreg. Finally, the prepreg is laminated with copper foil to prepare a copper-clad laminate. This invention introduces an allyl structure into the polyaryl ester backbone to prepare a novel bismaleimide resin modifier, optimizing the dielectric and water absorption properties of the bismaleimide resin. This overcomes the material matching challenge of liquid crystal polyaryl ester-based copper-clad laminates, providing a high-performance electronic material solution for high-end applications such as 5G / 6G communication, AI servers, advanced packaging, and aerospace.

This invention relates to the field of polypropylene technology, specifically to a high-strength, creep-resistant, and high-water-pressure-resistant PPH pipe and its preparation method. The pipe is produced by extrusion and two-stage cooling and shaping of a polypropylene homopolymer containing N,N'-dicyclohexyl terephthalamide with a specific particle size, stepwise addition of low-viscosity and high-softening-point maleic anhydride-grafted polypropylene wax, and side-feed addition of highly crystalline non-polar polypropylene wax. This method systematically solves the problems of uneven nucleating agent dispersion, weak interfacial bonding, and coarse processing control in existing technologies through nucleating agent particle size control, hierarchical interface construction, synergistic processing, and gradient cooling. It synergistically and significantly improves the pipe's long-term internal pressure resistance, creep resistance, and resistance to slow crack propagation.

The present application relates to the technical field of high-performance electronic materials, and particularly relates to an inorganic powder modified epoxy resin prepreg for high-frequency high-speed printed circuit board and a preparation method thereof. The prepreg is prepared by impregnating a low-dielectric glass fiber cloth with a resin glue solution and drying, wherein the resin glue solution comprises an epoxy resin composition, a curing agent and an inorganic powder; the inorganic powder is hollow mesoporous silica nanospheres modified by p-chlorophenyl urea loading and hyperbranched polymer grafting. Through functional powder structure design and resin system optimization, the prepreg realizes low dielectric loss, high heat resistance, excellent interfacial bonding strength and good process stability in a synergistic manner, and is suitable for the preparation of high-frequency high-speed copper-clad boards.