8results about How to "Uniform and stable structure" patented technology

The invention discloses a high-toughness epoxy resin material as well as a preparation method and application thereof, and aims to solve the problems that traditional epoxy resin is high in brittleness, and strength and toughness are difficult to consider at the same time. The preparation method comprises the following steps: carrying out incomplete silane coupling agent surface modification on glass fibers to obtain modified glass fibers with part of silicon hydroxyl reserved; synthesizing modified polyurethane of which the tail end contains an isocyanate group; directionally grafting the two to form a compound; mixing and curing with epoxy resin and a curing agent to obtain a target material. Through the innovative design of controllable defect manufacturing and dynamic key directional anchoring, the normal-state high-strength and stress high-toughness synergistic performance is achieved, meanwhile, the material is stable in structure, has the dynamic repairing potential, can prolong the service life and is suitable for preparing coatings, electronic packaging materials and adhesives.

The application belongs to the technical field of photocatalytic nano antibacterial materials, and discloses a preparation method and application of artemisia carbon dot modified crystalline carbon nitride material. The material is composed of A-CDs and CCN, A-CDs retains the biological activity functional groups of artemisia and is uniformly modified in the interlayer of CCN. The preparation method comprises the following steps: preparing CCN solid and A-CDs powder respectively, then dispersing the two in deionized water, adjusting pH, and then performing ultrasonic dispersion, drying, grinding and staged calcination treatment, so as to obtain A-CDs@CCN material. The application improves the charge separation efficiency by embedding A-CDs in the interlayer of CCN, realizes the synergistic antibacterial effect of A-CDs and CCN, has high inhibition activity on staphylococcus aureus and escherichia coli, and is not easy to induce drug resistance. The preparation process is simple, the raw material cost is low, the obtained material is uniform in composition and stable in structure, and can be used in the field of antibacterial.

This invention relates to the field of preparation method technology and discloses a method for preparing a low-density nylon foam material. The method includes selecting nylon resin as the matrix material, wherein the nylon resin is a blend of PA6 and amorphous nylon PA610 in a specific ratio, wherein the mass ratio of PA6 to PA610 is 60:40 to 80:20, and the melt strength of the nylon resin is greater than or equal to 18 Pa·s; introducing a composite foaming agent, wherein the composite foaming agent is a combination of a chemical foaming agent and a physical foaming agent; and adding a nucleating agent, wherein the nucleating agent is nano-sized silica, nano-clay, talc, or a combination thereof, wherein the mass content of nano-silica is 0.5% to 2.0%. This invention can maintain stable dimensions and mechanical properties in humid environments and has a uniform and stable cell structure.

This invention discloses a method for restoring the charcoal-grilled flavor of pike using a high-temperature, short-time oven baking process, belonging to the field of aquatic product processing technology. The invention employs a flameless, segmented oven heat treatment process: after thawing and cleaning, salt tumbling, low-temperature cold air drying, pre-baking at 170℃, and then short-time high-temperature baking at 270℃. This process eliminates the need for charcoal fire equipment and can be promoted in shopping malls and homes. By controlling the heat processing conditions, it fully stimulates the characteristic charcoal-grilled flavor compounds of aldehydes, ketones, and pyrazines. Verification using electronic nose, GC-IMS, free amino acids, and sensory analysis shows that the finished product is crispy on the outside and tender on the inside, with a high degree of charcoal-grilled flavor restoration and a full-bodied taste. It solves the safety and standardization problems of open-flame baking, is simple to operate and easy to mass-produce, and effectively enhances the added value of deep-processed Xinjiang pike.

The application discloses a kind of concrete internal curing agent for high-temperature underground chamber and its preparation method, belong to concrete material technical field.The internal curing agent is composed of sealing film liquid and superabsorbent polymer, sealing film liquid is compounded by epoxy modified polyurethane emulsion, nano silicon dioxide, carboxyl-containing acrylate copolymer, temperature-sensitive polyether polyol and coupling agent in proportion, form the core-shell structure with sealing film liquid as shell, SAP as core, with good high-temperature resistance and alkali resistance.The internal curing agent does not affect the working performance of concrete, in the high-temperature environment of 30~90 DEG C, when the hydration process of cement causes the pH value of pore solution in concrete to rise, the temperature of concrete rises and internal water shortage occurs, sealing film gradually ruptures under the synergistic effect of high temperature and high alkali, releases the water stored by SAP, provides the required free water for the continuous hydration of cement in concrete, effectively improves the strength and durability of concrete under high-temperature conditions.

The invention discloses a truck front suspension support convenient to mount and a mounting method thereof, and belongs to the technical field of truck suspension systems. The front suspension support comprises a front suspension support body and a rear suspension support body which are cooperatively matched, the front suspension support body is provided with a connecting hole, an anti-interference sliding way and an abnormal sound preventing structure, and the rear suspension support body is provided with an adaptive connecting hole and is optimized in shape; the front suspension support can be matched with a single-support and double-support installation mode, and the front suspension support and the double-support are integrally formed through thickened manganese plates. The installation method comprises the steps of positioning installation, oil cylinder installation, debugging inspection and optimization adjustment, and existing truck parts do not need to be transformed. The problems that an existing support is poor in structure, tedious in installation, weak in working condition adaptability, difficult to guarantee in installation quality and the like are solved, stable four-point suspension of the cab is achieved, the structural stability and driving comfort are improved, installation is efficient, adaptability is wide, and the use requirements of various working conditions can be met.

This invention discloses a coating solution for preparing high-temperature resistant and high-thermal-conductivity epoxy-based conductive films, its preparation method, and its application. By weight, it comprises the following raw material components: 70-85 parts liquid epoxy resin, 15-30 parts solid epoxy resin, 5-35 parts latent curing agent, 0.5-5 parts accelerator, 300-600 parts conductive filler, 15-30 parts thermoplastic resin, 0.5-2 parts coupling agent, and 30-60 parts solvent. The thermoplastic resin is a phenoxy resin with a special chemical structure and a molecular weight of 20,000-65,000 g / mol. This invention, by introducing a high-temperature resistant thermoplastic resin into the coating solution formulation, enables the prepared conductive film product to possess excellent comprehensive properties such as toughness, adhesion characteristics, and high-temperature stability.

This invention provides a non-Saccharomyces anomalus yeast, with accession number CGMCC No. 25528, deposited at the China General Microbiological Culture Collection Center on August 12, 2022. A method for preparing immobilized yeast capsules of this non-Saccharomyces anomalus yeast is also provided. The immobilized yeast capsules prepared under optimal conditions exhibit high hardness, good permeability, and improved ethanol tolerance, allowing for simultaneous inoculation and fermentation with Saccharomyces cerevisiae. Furthermore, this invention provides the application of immobilized yeast capsules in winemaking. Using the immobilized yeast capsules of this invention in winemaking can significantly increase the total amount of volatile substances in the wine, enhance the complexity of the aroma, and thus improve the quality of the wine.