6results about How to "Maintain hardness" patented technology

The invention discloses a water-swelling elastic plugging agent for a water-based drilling fluid and a preparation method of the water-swelling elastic plugging agent. The water-swelling elastic plugging agent comprises the following components in parts by weight: 100 parts of a polyolefin elastomer matrix material; 15 to 20 parts of a reinforced matrix material; 0.8 to 1.5 parts of a polyolefin elastomer matrix material cross-linking agent; 8 parts to 15 parts of a reinforcing agent A; 20 to 30 parts of a reinforcing agent B; 15 to 30 parts of super absorbent resin; 15 to 20 parts of a plasticizer; 0.2 to 0.8 part of an isolating agent; 0.5 to 1 part of an anti-aging agent; the plugging agent provided by the invention is simple in preparation process, not only is beneficial to industrial production, but also is convenient to prepare plugging slurry on site, can achieve a good plugging effect, and provides an effective technical means for well leakage treatment.

This invention relates to a high-temperature resistant, room-temperature curing anti-corrosion coating and its preparation method. The high-temperature resistant, room-temperature curing anti-corrosion coating includes component A and component B. Component A includes epoxy resin, small molecule hydroxyl compounds, additives, and inorganic fillers. Component B includes a curing agent. The epoxy resin includes phenolic epoxy resin, which includes various phenolic epoxy resins with different viscosity gradients. The coating of this invention, by using phenolic epoxy resins with different viscosity gradients, can improve the adhesion between the coating and oil pipeline materials, and also improves the resistance to different temperatures and humidity levels. It has strong adhesion to oil pipelines, is easy to apply, and possesses a variety of excellent properties such as high solids content, impermeability, corrosion resistance, high temperature resistance, and thermal stress resistance. It can be applied in harsh environments such as alternating high and low temperatures, alternating dry and wet conditions, alternating strong acids and alkalis, and high abrasion, and is suitable for long-term corrosion protection of oil pipelines.

The invention discloses a production process of a new material for paper decoration, and relates to the technical field of decoration material production, the dependence on natural mineral products is abandoned, renewable plant fiber paper is adopted as a core base material, the radioactive risk of a raw material source is eliminated, and the environmental safety of long-term indoor use of the material is ensured; in order to solve the problems that paper is insufficient in strength and poor in weather resistance, a composite modifier containing waterborne polyurethane resin and nano silicon dioxide is designed, the modifier fully permeates into the interior and gaps of a paper fiber network through an ultrasonic-assisted impregnation technology, and in the subsequent drying and hot pressing process, the strength of the paper is greatly improved. The resin is crosslinked and has a synergistic effect with the nanoparticles, a compact organic-inorganic hybrid protection layer is formed on the surfaces of the fibers and among the fibers, and the protection layer obviously enhances the mechanical strength, wear resistance and moisture resistance of the paper, so that the paper meets the use requirements of decorative plane materials, and meanwhile, unification of safety and economical efficiency is realized.

This invention provides a high-performance copper-phosphorus alloy based on grain optimization and its preparation method. The copper-phosphorus alloy comprises the following components in the indicated mass percentages: Cu 75%-85%, P 10%-15%, Al 2%-5%, Ti 1%-3%, rare earth elements 0.1%-0.5%, and the remainder being Fe; the rare earth elements are one or more combinations of cerium, lanthanum, and dysprosium. The preparation method includes batching, smelting, preliminary cooling, casting and rolling, rapid cooling, heat treatment, machining, and surface treatment. The copper-phosphorus alloy of this invention achieves high performance through grain optimization and is suitable for industrial applications requiring high strength, high hardness, and good plasticity and toughness.

This invention relates to the field of tobacco machinery processing technology, and provides a packaging edge cutting system for cigarette tipping paper winding. The winding machine body is equipped with packaging paper, and an edge cutting adjustment roller is installed on one side of the winding machine body. An edge cutting blade holder is movably mounted on the edge cutting adjustment roller. An upper blade sleeve is rotatably mounted inside the edge cutting blade holder, and an upper blade body is fixedly connected to the outside of the upper blade sleeve. A lower blade sleeve is rotatably mounted on the outer wall of the edge cutting blade holder, and a lower blade body is fixedly connected to the outside of the lower blade sleeve. The upper and lower blade sleeves are rotatably connected to the outside of the edge cutting blade holder in a spliced ​​manner. With the assistance of a quick-change structure consisting of an installation rod, a limiting rod, and a double spring assembly, the system can quickly release the blade sleeve locking state by pressing the limiting rod to retract after the machine stops, achieving tool-free disassembly and assembly of the blade assembly.

The application discloses a kind of automatically slitting inductance protection bearing tape preparation equipment and preparation method thereof, comprising: conveying table, heat pressing device, cutting device and cooling device are sequentially arranged in conveying table two sides from left to right;Including the following steps: S1, accurate positioning is carried out to bearing tape by positioning structure and position is corrected;S2, bearing tape is contacted with heater by positioning pressing plate and is pressed down, and the edge of bearing tape is softened;S3, the both sides of bearing tape are cut simultaneously by blade;S4, bearing tape is rapidly frozen and cooled by liquid nitrogen injection part, and then the bearing tape piece is blown to the blanking transmission part by air injection part, and the blanking of single bearing tape piece is completed.The application effectively solves the problem of curling caused by uneven stress distribution by combining heating treatment, arc cutting and air blowing blanking, improves production efficiency, improves product quality and stability, reduces manual operation and error, and reduces production cost.