9results about How to "Improve impregnation effect" patented technology

The application belongs to the technical field of polymer materials, and particularly relates to a high-performance fiber composite material and a preparation method thereof. The preparation method of the high-performance fiber composite material comprises the following steps: adding pretreated aluminum oxide whiskers into a solvent, then adding pretreated carboxymethyl cellulose and gallic acid, and heating to reflux to obtain modified aluminum oxide whiskers; then mixing epoxy resin, the modified aluminum oxide whiskers, a curing agent and an accelerator uniformly to coat a film to obtain a resin adhesive film; and compounding the resin adhesive film and carbon fibers through hot pressing to obtain carbon fiber prepreg, and heating and curing the obtained prepreg to obtain the high-performance fiber composite material. The fiber composite material obtained by the application not only has high strength and rigidity, but also has excellent toughness, can effectively resist the impact of the external environment, has oxidation resistance and long-term stability, and has a wide application prospect in the fields of aerospace and new energy equipment.

The utility model discloses process equipment for preparing amorphous polyaryletherketone carbon fiber prepreg by a solution method, which comprises a microwave solvent removing device which comprises a solvent removing cavity and a plurality of groups of glue scraping rollers arranged in the solvent removing cavity, the multiple sets of glue scraping rollers are sequentially arranged in the solvent removing cavity in the conveying direction of the carbon fibers, and the height of the glue scraping roller close to an inlet of the solvent removing cavity in the vertical direction is larger than or equal to the height of the adjacent glue scraping roller close to an outlet of the solvent removing cavity in the vertical direction. A plurality of groups of glue scraping rollers are designed at the same time, so that the retention time of the prepreg in the microwave solvent removing device is controllable, a solvent is fully volatilized, the height of the glue scraping rollers in the vertical direction is limited, redundant resin on the prepreg flows and is enriched, certain pressure is applied through the glue scraping rollers, the redundant resin is removed, the resin content is controllable, and the resin content is improved. Meanwhile, the combination with fibers is tighter, and the quality of the prepreg is obviously improved.

The present invention relates to a method of manufacturing a liquid cosmetic impregnation foam and the foam, the method including a test method for the liquid cosmetic impregnation foam. The test method for the liquid cosmetic impregnation foam according to one embodiment of the present invention can include the steps of: manufacturing a liquid cosmetic impregnation foam capable of being used to impregnate a liquid or solid cosmetic composition; performing an FT-IR test on the manufactured liquid cosmetic impregnation foam; determining whether a result value of the FT-IR test is within a specific ratio range that provides a balance of hydrolysis resistance, water resistance, and oil resistance of the liquid cosmetic impregnation foam; and if the result value of the FT-IR test is within the specific ratio range, performing a solid NMR test.

This invention discloses a high-toughness, low-dielectric bismaleimide resin composition, a modified bismaleimide resin, its preparation method, and its applications. The bismaleimide resin composition comprises bismaleimide resin, an allyl compound, and a liquid rubber, wherein the liquid rubber contains end-capping groups capable of reacting with double bonds. This invention primarily addresses the problems of high dielectric constant, poor toughness, and poor interlaminar shear strength in existing bismaleimide resins. In this invention, the dielectric properties and toughness are improved by reacting the end-capping groups in the liquid rubber with the bismaleimide resin, while maintaining the mechanical properties and heat resistance essentially unchanged.

The present invention provides a foamed body containing a nitrile group-containing conjugated diene-based copolymer and a polyurethane-based polymer, wherein the total of the nitrile group-containing conjugated diene-based copolymer and the polyurethane-based polymer is 100% by weight, the nitrile group-containing conjugated diene-based copolymer is less than 90% by weight, the polyurethane-based polymer is more than 10% by weight, the content of ethylenically unsaturated nitrile monomer units in the nitrile group-containing conjugated diene-based copolymer is more than 31% by weight, and the foamed body has a density of 0.08 to 0.30 g / cm 3 In any cross section of the foamed body, the average diameter of the cross sections of the bubbles appearing in the cross section is 350 μm or less, and the number of bubbles having a diameter of 0.6 mm or more appearing in the cross section is 0.062 or less per mm 2 The following.

The invention discloses a phenolic aldehyde board for biomass circuit board drilling and a preparation method and application thereof.The preparation method of the phenolic aldehyde board for biomass circuit board drilling comprises the steps that cashew nut shell oil, phenol and an acid catalyst are mixed, then sodium hydroxide, paraformaldehyde and formaldehyde are added for a reaction, and a cashew nut shell oil modified phenolic aldehyde solution is prepared; diluting and impregnating wood pulp paper to prepare a pre-cured sheet; and finally, carrying out hot pressing to form the phenolic aldehyde plate. According to the biomass phenolic resin, the preparation cost of the phenolic resin can be remarkably reduced, environmental protection benefits are achieved, and the comprehensive performance of the biomass phenolic resin can be kept equivalent to that of pure phenolic resin while the permeability of a glue solution to wood pulp paper and the gluing uniformity are guaranteed.

The utility model discloses a kind of based on capacitor processing's impregnation tool, it is related to capacitor processing technical field, including impregnation mechanism, the left side of the impregnation mechanism is provided with suction mechanism, the top of the impregnation mechanism is provided with working mechanism, the impregnation mechanism includes impregnation box, the inside of the impregnation box is provided with inner chamber, the bottom of the impregnation box is fixedly connected with support leg around, the top of the impregnation box is fixedly connected with connecting support, the top of the connecting support is fixedly connected with operating box, the front of the operating box is provided with operating panel. The utility model is through the design of suction mechanism, when capacitor is impregnated, start vacuum machine first to extract vacuum inside impregnation box, so that capacitor is in negative pressure state, then pressurize, so that impregnation solution fully impregnates capacitor, greatly improves impregnation effect, so that impregnation time is greatly shortened, improve product quality, and improve the performance of capacitor.

The embodiment of the invention provides a high-temperature heat storage-supercritical steam generation system. The high-temperature heat storage-supercritical steam generation system comprises a heat storage body, a supercritical steam generation unit connected with the heat storage body and an intelligent control unit connected with the supercritical steam generation unit. The heat storage body comprises a solid waste-based graded porous carrier and fused salt filled in gaps of the solid waste-based graded porous carrier; the supercritical water vapor generating unit comprises a water vapor generator with a built-in spiral metal pipe and a multi-stage heat exchange runner; the intelligent control unit comprises a digital controller, an axial-flow compressor and a heat exchange pump, the digital controller is connected with the axial-flow compressor, the heat exchange pump and the heat storage body, and the digital controller is configured to dynamically adjust the running states of the axial-flow compressor, the heat exchange pump and the heat storage body.

This application provides a soldering fixture for superconducting coils, comprising: a first cover plate and an immersion platform that can be stacked and connected by a fastening device; the first cover plate is provided with a solder inflow channel and a solder outflow channel; the immersion platform is provided with an immersion tank for accommodating the superconducting coil to be immersed, and after the superconducting coil to be immersed is placed into the immersion tank, there is a gap between the superconducting coil and the tank wall; the immersion platform is provided with a solder inlet and a solder outlet communicating with the immersion tank, the solder inlet being correspondingly provided with the solder inflow channel and the solder outlet being correspondingly provided with the solder outflow channel; a cover plate anti-sticking plate is also provided between the first cover plate and the immersion platform, the shape of the anti-sticking plate being consistent with the shape of the immersion tank, which can ensure the flatness of the upper surface of the superconducting coil after immersion, and at the same time, when the first cover plate of the fixture is removed, it prevents the solder in the immersion tank from sticking to the first cover plate, thus preventing some solder from peeling off, ensuring the uniformity of solder immersion, and improving the solder immersion effect.