4results about How to "Improve cooling performance" patented technology

This invention belongs to the field of functional textile materials and provides a cooling and antibacterial polyester fabric and its preparation method. The invention employs a melt-blended spinning design of a thermally conductive antibacterial core-shell masterbatch and a polyester matrix. The masterbatch uses a zinc oxide submicron rod-shaped inorganic core as its core, coated with a silane coupling layer and a quaternized copolyester shell. During fiber drafting, the one-dimensional zinc oxide rods are aligned axially, significantly improving the longitudinal thermal conductivity of the fiber and enhancing the instantaneous cooling sensation upon contact. Simultaneously, the quaternized copolyester shell exhibits good compatibility with the polyester matrix, constructing a dense, wash-resistant, and antibacterial network. This achieves synergistic optimization of high-strength, fine-denier spinnability with high-filler thermal conductivity, durable antibacterial properties after 50 machine washes with a soft and comfortable feel, and high functionalization efficiency with low migration safety. It resolves the technical contradictions in existing polyester fabrics regarding thermal conductivity and cooling sensation versus antibacterial durability, functionality versus safety, and processability versus comfort, and has broad application value in areas such as intimate apparel and bedding.

The utility model relates to the field of warp knitting material structures, in particular to a jacquard vamp material with cool and breathable effects, which is integrally knitted by a warp knitting machine and comprises a cool and breathable area, the cool and breathable area comprises surface layer yarns, inner layer yarns and jacquard yarns, the surface layer yarns are knitted to form a surface layer of a knitted vamp, and the inner layer yarns are knitted to form a surface layer of the knitted vamp. The inner layer yarn is knitted to form an inner layer of the knitted vamp, the inner layer comprises a jacquard base column and a tightening column which are arranged at intervals in a staggered mode, the jacquard yarn comprises a face-to-lining connecting column and a cool jacquard column which are arranged at intervals in a staggered mode, and the face-to-lining connecting column corresponds to the tightening column to enable the face layer and the inner layer to be knitted and connected. The cool-sense jacquard columns are arranged on the inner layer corresponding to the jacquard base columns in a jacquard mode, jacquard yarns of the cool-sense jacquard columns adopt cool-sense yarns with a cool-sense effect, and jacquard yarns of the tightening columns adopt tightening yarns capable of treating shrinkage. The jacquard vamp material with the structure not only has a cool and breathable comfortable effect, but also can meet the requirements of performance standards of related structures of knitted vamps.

The utility model discloses a semiconductor refrigeration module which comprises a semiconductor refrigeration sheet, a hot end heat dissipation device and a cold end cold conduction block, and the cold end of the semiconductor refrigeration sheet further comprises a wind tunnel exhaust fan connected with the cold conduction block. The cold end improves the cold conduction effect through a red copper cold conduction block and a wind tunnel exhaust fan made of an aluminum alloy material, and meanwhile, light weight and low cost of the semiconductor refrigeration module are guaranteed; a hot end heat dissipation device selects a water cooling block, heat generated by the hot end is taken away through a micro-channel, the heat dissipation area is large, the heat dissipation efficiency is high, and the refrigeration effect is further improved; efficient cold end cold conduction and hot end heat dissipation effects are achieved, and it is prevented that after the cold end and the hot end reach a certain temperature difference, forward and reverse heat transfer counteracts, the temperature of the cold end and the temperature of the hot end tend to be balanced, and consequently power consumption of the semiconductor chilling plate is increased, and the refrigeration effect becomes poor; and an overheat protection device is arranged at the output end of the hot-end heat dissipation device, and after external cooling liquid is heated to a fixed temperature, the overheat protection device can be interrupted in time, the refrigeration effect is improved, and meanwhile the running safety of the system is guaranteed.

This application relates to the field of nuclear fusion technology, providing a method for fabricating a non-insulated superconducting coil and the non-insulated superconducting coil itself. The method includes: stacking and winding a metal strip and a superconducting strip to form a coil with a predetermined number of turns, obtaining a wound coil, wherein the width of the metal strip is greater than the width of the superconducting strip; placing the wound coil in a solder immersion apparatus for solder immersion, obtaining a welded coil; and removing the solder shell from the annular surface of the welded coil to expose the metal strip. By overlapping and winding the superconducting strip and a metal strip with a width greater than the superconducting strip, and then soldering them, the mechanical stability of the non-insulated superconducting coil is improved, while the cooling effect is enhanced. Afterwards, by removing the solder shell to expose the metal strip, the superconducting strip is not damaged during the removal of the solder shell, ensuring the performance of the non-insulated superconducting coil. The metal strip can completely separate adjacent turns of the superconducting strip, further improving the inter-turn resistivity.