8results about How to "Reduce thermal decomposition" patented technology

The invention relates to the technical field of power cables, in particular to a cross-linked polyethylene insulated flame-retardant power cable and a preparation method thereof, which are used for solving the problems that an existing cable material is extremely easy to damage when facing high temperature and flame, so that a cable insulating layer is exposed, and potential safety hazards exist. According to the insulating layer of the cable, the inner protection layer and the insulating flame-retardant layer are adopted for synergistic effect, the inner protection layer ensures basic electrical insulation and mechanical protection, and the insulating flame-retardant layer serves as an independent functional unit and is filled with a flame retardant, so that the cable has good insulating flame-retardant performance; a multi-layer and active fireproof system is constructed: a multi-layer and synergistic flame-retardant barrier is formed inside the cable by inner and outer modified base materials and a flame retardant in the insulating layer, so that the cable can be quickly self-extinguished during combustion, smoke and molten drops are remarkably inhibited, chemical crosslinking is completed between the inner protective layer and the insulating flame-retardant layer by adopting co-extrusion and synchronous crosslinking processes, an interlayer interface is eliminated, and the flame-retardant performance of the cable is improved; the structural integrity is improved, and the performance is improved.

The application discloses a kind of high-strength waterproof board and preparation method thereof, it is related to plate technical field.The preparation method of the application includes the following steps: sequentially stack 1 steel plate, 2 base plates, 1 fingerprint-resistant polymer film on 1 fingerprint-resistant polymer film, then heat pressing solidification, after cooling, plate is taken out, and high-strength waterproof board is obtained;Wherein, base plate is prepared from modified kraft paper and modified color paper.The water resistance, fire resistance and bonding strength of the plate are effectively improved by modifying kraft paper with modified phenolic resin, hydrophilic silicon dioxide and other components;The bonding strength, water resistance and fire resistance of the plate are further improved by modifying color paper with melamine, vanillin, flame retardant DOPO, 3,4-dihydroxybenzaldehyde and other components.Therefore, the application has a more extensive application prospect.

The invention discloses a low-odor PC / ABS alloy and a preparation method thereof, and belongs to the technical field of alloy materials, the alloy material comprises the following components by weight: 65-75 parts of PC resin, 25-35 parts of ABS resin, 2-8 parts of lanthanum modified diatomite, 3-5 parts of a compatilizer, 0.5-2 parts of a POSS-based deodorant, and 0.1-0.5 part of an initiator; the POSS-based deodorant is a polyhedral oligomeric silsesquioxane derivative, the molecular structure of the POSS-based deodorant contains a vinyl group, an epoxy group and a siloxane group at the same time, through the synergistic effect of the POSS-based deodorant and the lanthanum-modified diatomite, a multi-target deodorization system for generation inhibition, chemical capture and physical adsorption is constructed, the mechanical property of the PC / ABS alloy is maintained, and meanwhile the mechanical property of the PC / ABS alloy is improved. Source inhibition and whole-process control of VOC are achieved, the odor grade and the TVOC release amount are greatly reduced, and the long-acting and stable low-odor effect is achieved.

The application discloses a cold-resistant high-voltage cable and a preparation method thereof, and relates to the technical field of polyolefin cables. The cold-resistant high-voltage cable comprises the following steps: step 1, uniformly mixing high-density polyethylene, linear low-density polyethylene, maleic anhydride grafted POE, hydrogenated styrene-butadiene-styrene block copolymer, a crosslinking agent, an antioxidant and a lubricant, and high-temperature stirring to obtain premix; step 2, melt extruding the premix, wherein the melt extrusion process comprises six temperature zones, and high-pressure modified fibers are added in the fourth temperature zone, and then cooling and forming to obtain a cold-resistant high-voltage outer sheath; and step 3, sequentially coating a cable core with the outer sheath, a shielding layer and an insulation layer to obtain the cold-resistant high-voltage cable. The outer sheath of the cold-resistant high-voltage cable prepared in the application has good cold resistance and high-voltage stability, so that cracks of the outer sheath are avoided, and the use of the cable is affected.

The invention discloses a method for improving yellowing of PHA (polyhydroxyalkanoate), which is characterized in that the PHA such as PHB is compounded with an organic peroxide cross-linking agent, an anti-hydrolysis agent and an antioxidant to achieve the effects of inhibiting yellowing and increasing transparency.

This utility model relates to the field of acetone cyanohydrin amidation technology, specifically to a mixing reactor for acetone cyanohydrin amidation. The mixing reactor has a horizontal structure, with a mixture inlet, a reactant outlet, and at least one acetone cyanohydrin inlet on the shell. An inner tube connecting the mixture inlet is provided inside the shell, and at least one nozzle is provided on the inner tube. The acetone cyanohydrin inlet is an inner-extended structure and corresponds to the nozzle. The inner tube consists of a vertical section and a horizontal section, with the vertical section located at the end or midpoint of the horizontal section. This mixing reactor maximizes the uniform mixing of materials, improving the utilization rate of the reactor and the raw materials.

The application discloses a method for recycling and utilizing waste lithium battery electrolyte resources, and comprises the following steps: freezing and cutting the waste lithium battery, and then putting the waste lithium battery into an organic solvent for leaching; performing solid-liquid separation to obtain first filtrate and first filter residue; performing distillation on the first filtrate to obtain mother liquor and organic distillate; adding a complexing solvent into the mother liquor for reaction, and then performing filtration to obtain second filtrate and second filter residue; heating the second filter residue to obtain lithium hexafluorophosphate solid; adding an amine compound into the second filtrate, and then performing filtration to obtain third filter residue; and heating the third filter residue to obtain lithium bisfluorosulfonylimide solid. The method realizes extraction and recovery of lithium hexafluorophosphate and carbonate solvents in the electrolyte, and can extract pure lithium bisfluorosulfonylimide from lithium hexafluorophosphate crystallization mother liquor.

The utility model relates to a fine wire drawing machine, and provides a multi-stage mold wire jumping prevention type medium-sized fine wire drawing machine, which comprises a base, an equipment main body, a bin gate and the like, an equipment body is arranged at the top of the base, a processing bin is arranged in the equipment body, round holes allowing wires to penetrate through are formed in the left side and the right side of the equipment body, a bin door is arranged on the front side of the equipment body, and the bin door is rotationally arranged on the equipment body and is opened and closed through a movable supporting rod. According to the utility model, the closed lubricating component is arranged on a wire stretching transmission path, and a high-pressure atomization technology is adopted in the component, so that a lubricant uniformly covers the surface of a wire; and in combination with the dynamically adjusted sliding seat, the tension of the wire rod is automatically adjusted, wire jumping, wire breakage and scratches are prevented, the die abrasion and the wire breakage rate are remarkably reduced, manual intervention is reduced, and the high-precision and high-efficiency machining requirements of the superfine wire rod are met.