6results about How to "Low intensity" patented technology

The invention belongs to the technical field of organic compounds and artificial boards, and relates to a whitening agent, a preparation method thereof and application of the whitening agent in whitening type medium density fiberboards, the whitening agent comprises the following components by mass percent: 2-5% of hydrogen peroxide, 0.2-0.6% of sodium silicate, 0.5-1.5% of sodium hydroxide, 0.1-0.4% of water-soluble stilbene fluorescent whitening agent and the balance of water. The preparation method comprises the following steps: sequentially adding the components into water at 60-65 DEG C, stirring and dissolving, and keeping the temperature at 60 DEG C for later use. When being applied, the cleaning agent is added in a wood chip washing process, the mass of the cleaning agent is 1-1.5% of the total mass of cleaning water for the first time, and 0.05-0.08% of the cleaning agent is supplemented per hour subsequently. According to the whitening agent, through the synergistic effect of chemical oxidation and physical color complementing, the whiteness of a fiberboard reaches 31-36 (only 14 in a conventional process), the physical and chemical properties meet the GB / T 11718-2021 standard, and the whitening agent is environmentally friendly, free of residues, simple to prepare and apply, suitable for industrial continuous production and capable of remarkably improving the added value of products.

The utility model provides a kind of small desktop type spinning draft device, including extrusion mechanism, cooling mechanism, oiling mechanism, draft mechanism and winding mechanism.Extrusion mechanism, cooling mechanism, oiling mechanism, draft mechanism and winding mechanism are connected in rack side, extrusion mechanism, cooling mechanism and oiling mechanism are set from top to bottom, and draft mechanism is set between winding mechanism and oiling mechanism.Cooling mechanism and oiling mechanism are provided with silk pressing mechanism, and oiling mechanism downside is equipped with guide mechanism.Extrusion mechanism extrudes tows, and tows are cooled after cooling mechanism, and then oiling is carried out in oiling mechanism, and after oiling, tows are reversed after guide mechanism, and then draft in draft mechanism, and after draft, tows are wound by winding mechanism.The utility model integrates extrusion, cooling, oiling, draft, winding and other multi-process, realize desktop miniaturization, small floor area, and adapt to small batch, multi-batch research and development production demand.

This invention relates to an ultra-lightweight steel-framed concrete component and its preparation method, belonging to the field of building engineering technology. By filling the steel frame with a lightweight core material and an inner filling layer, not only can the overall strength of the steel frame be improved, but the presence of the lightweight core material can also reduce the overall weight of the steel frame. By creating cavities through holes in the lightweight core material, the weight of the component itself is reduced, facilitating production, transportation, and construction, reducing the self-weight of buildings or structures, and improving seismic performance. In addition, it should be noted that by wrapping the steel frame with an outer cement fiberboard using porous polymer as lightweight aggregate, the steel frame acquires fireproof and corrosion-resistant properties.

This utility model relates to the field of medical device technology, specifically to a coil assembly and a medical device. The coil assembly includes at least one insulating plate and a coil attached to the insulating plate with adhesive. Each insulating plate has multiple through holes and multiple serpentine holes, which are staggered. The serpentine holes are arranged radially from the center of the area where the coil is located on the insulating plate. This application combines multiple through holes with multiple serpentine holes, and the serpentine holes are arranged radially from the center of the area where the coil is located on the insulating plate. The serpentine holes, through their meandering path, increase the space for adhesive within the limited space of the insulating plate, providing sufficient adhesive capacity. Simultaneously, they can disperse stress, avoiding significant stress concentration caused by the presence of holes, and have minimal impact on the overall hardness and structural strength of the insulating plate, thus ensuring the mechanical properties of the coil assembly.

The utility model discloses a multilayer reinforced protection type packing carton, including the box body, the top of box body is provided with the box cover, the box body and box cover all include white cardboard layer, the surface fixedly connected with corrugated paperboard layer of white cardboard layer, one side of corrugated paperboard layer is provided with first function layer, first function layer includes honeycomb paperboard layer and EVA bubble cotton layer, one side of first function layer is provided with second function layer. The utility model discloses through setting up corrugated paperboard layer, utilizes the mechanical characteristic of corrugated structure, promotes the compression strength and the bending resistance of packing, supports the stacking weight, disperses external pressure, reduces local stress deformation, especially suitable for heavy object packing or transportation scene, through setting up honeycomb paperboard layer, the honeycomb three -dimensional structure provides excellent compression resistance and impact resistance, effectively absorbs external impact force, light in weight but high in strength, can promote the protection effect under the premise of not increasing packing weight, is suitable for transportation scene.

The application discloses a kind of plant fiber raw material pretreatment methods of electrically driven deep eutectic solvent, work electrode, auxiliary electrode, reference electrode are placed into electrolytic cell to form three-electrode electrolysis device, and deep eutectic solvent (DES) is added into electrolytic cell as pretreatment liquid;Plant fiber raw material is added to pretreatment liquid and electrolysis is carried out;After electrolysis is completed, the prepared fiber is washed and dried;After plant fiber extraction is completed, DES in pretreatment liquid is recovered and then used for plant fiber extraction again.Compared with the process of traditional plant fiber extraction using only deep eutectic solvent, the temperature required in the reaction process of the method is lower, the reaction time is relatively shorter, in the extracted plant fiber, not only the content of lignin is lower (the removal rate of lignin is high), but also the damage of DES to fiber polymerization degree and strength is smaller, the selectivity of system can be regulated by controlling voltage and other electrolysis parameters, and then the chemical composition of the prepared fiber can be regulated.