12results about How to "Avoid heat conduction" patented technology

This application discloses a heat-insulating and high-temperature resistant PPR composite pipe and its preparation method. The PPR composite pipe includes an inner layer, a middle layer, and an outer layer. The inner layer, by weight, includes the following components: 80-90 parts of PP-RCT, 1-3 parts of boron-nitrogen co-doped graphene aerogel, 0.5-1.5 parts of antioxidant, 3-8 parts of boron nitride, 1-3 parts of polyphthalamide, and 0.5-2 parts of dispersant. The middle layer includes PP-RCT, chopped glass fiber, maleic anhydride-grafted polypropylene, and ethylene-vinyl alcohol copolymer. The outer layer includes PP-RCT and an ultraviolet absorber. This PPR composite pipe has excellent heat insulation and high-temperature resistance properties.

The utility model provides a kind of aerogel infusion glass fibre thermal insulation decorative board assembly, it includes infusion thermal insulation core layer, inner side support plate layer, outer side support plate layer, cover decorative surface shell layer and plug-in positioning end, and the infusion thermal insulation core layer of the thermal insulation decorative board assembly is formed by infusion of aerogel in glass fibre felt body, aerogel has very low thermal conductivity, and microstructure is composed of nanometer scale pore, can effectively prevent heat conduction, realize good heat insulation effect, provide efficient thermal insulation performance for building, by setting inner side support plate layer and outer side support plate layer, the inner and outer sides of infusion thermal insulation core layer are supported and strengthened respectively, the structural stability of the whole thermal insulation decorative board assembly is enhanced, the setting of plug-in positioning end makes that thermal insulation decorative board assembly can accurate positioning, and with wall body joint, adjacent thermal insulation decorative board assembly can also be sequentially spliced, improve construction efficiency and installation quality.

This application discloses a combined polyether, a polyurethane composition, a polyurethane foam, and a refrigeration device. The combined polyether comprises a polyether polyol and a filler, wherein the filler comprises an epoxy-based cage-like polysilsesquioxane; wherein at least one organic side chain attached to the silicon atom of the epoxy-based cage-like polysilsesquioxane contains an epoxy group, and at least one epoxy group is located at the end of the organic side chain. The combined polyether provided in this application, by adding an epoxy-based cage-like polysilsesquioxane as a filler, achieves molecular-level dispersion by forming covalent bonds with the hydroxyl groups of the polyether polyol and the -NCO groups of the isocyanate, due to the epoxy active groups contained in this filler. This prevents the thermally conductive filler from agglomerating and migrating. Furthermore, the cage-like structure of the epoxy-based cage-like polysilsesquioxane can effectively capture gas molecules inside the polyurethane foam, inhibiting gas heat conduction and significantly reducing the thermal conductivity of the polyurethane foam at low temperatures.

The utility model relates to door lock cylinder technical field especially, it is a kind of door lock cylinder, solve the problem that multiple keys need additional space to store in prior art, need to replace lock to prevent stranger to open lock after losing key.A kind of door lock cylinder, including door panel, the surface of door panel is equipped with lock cylinder by mounting mechanism, the surface of lock cylinder is equipped with accommodating groove, the inside of accommodating groove is slidably connected with several separate rings, the inside of separate ring is equipped with locking mechanism, the top of lock cylinder is fixedly connected with two sliding blocks, one end of lock cylinder is rotatably connected with ring, the other end of lock cylinder is rotatably connected with bottom ring, the surface of ring is equipped with key.The utility model can open multiple door locks using a key, save the space where key is placed, and when key is lost, the position of separate ring in lock cylinder can be changed to make previous key unable to open new door, additional door lock is not needed, prevent lock cylinder internal high temperature deformation to cause door unable to open.

The utility model relates to medical detection device technical field especially for a kind of trace PCR reaction auxiliary device, including tapered tube core, baffle, connecting rod, ring stand, threaded connection seat, screw rod structure, lower pressing part, fixed plate, resistance pole and PCR reaction tube;The utility model is used in cooperation with PCR reaction tube, distribute liquid in PCR reaction system in the vicinity of pipe wall, increase the conduction efficiency with PCR instrument heat module, promote reaction speed, avoid the process of liquid internal heat conduction simultaneously, improve the uniformity of reaction system, improve PCR reaction efficiency, and the volume of overall reaction system can be reduced to 1-5 microliters from 20-50 microliters, greatly save the dosage of reaction reagent and the requirement to sample amount, and the device can be adapted to the general ordinary PCR reaction tube in market, need not add new instrument and consumables when using the device, and additional cost will not be increased.

The present application relates to a kind of wide temperature range temperature parameter black box tester, belong to industrial measurement and control technical field.The multistage temperature tester protection structure is used, from outside to inside in turn includes fiber heat insulation layer, nano micropore heat insulation layer, phase change heat insulation layer, inner layer high reflection heat insulation layer and vacuum heat insulation layer;Vacuum heat insulation layer is vacuum cavity, and the outer side wall surface of which is equipped with heating sheet array and closed loop feedback control system, for active heat compensation under low temperature environment;Data instant transmission system uses high-temperature-resistant antenna to realize wireless data transmission and time synchronization;Damping and sealing integrated system includes hierarchical damping damping structure and sealing gasket structure.The present application realizes stable, accurate temperature measurement in-190 ℃ to 1300 ℃ wide temperature range, has real-time data transmission, anti-vibration and sealing protection ability, significantly improves the reliability and measurement accuracy of equipment in harsh environment.

The utility model relates to a box body heat insulation structure of a heat preservation box, which comprises a shell, an inner container, a polyurethane foaming layer positioned between the shell and the inner container, and two layers of vacuum heat insulation plates arranged between the inner container and the polyurethane foaming layer from inside to outside, each layer of vacuum insulated panels comprises vacuum insulated panels located on the left side and the right side and vacuum insulated panels located on the upper side and the lower side, in each layer of vacuum insulated panels, the vacuum insulated panels on the left side and the right side are longitudinally arranged in a staggered mode, and the vacuum insulated panels on the upper side and the lower side are transversely arranged in a staggered mode; the upper surface of the upper vacuum heat insulation plate in the upper and lower vacuum heat insulation plates is flush with the upper end surface of one of the left and right vacuum heat insulation plates, and the lower surface of the lower vacuum heat insulation plate in the upper and lower vacuum heat insulation plates is flush with the lower end surface of the other of the left and right vacuum heat insulation plates. According to the utility model, the heat preservation and insulation performance is improved, and the heat conduction is reduced by prolonging the path of the splicing gap between the vacuum insulation plates.

The utility model relates to the technical field of composite films, in particular to a micro-foaming flexible package composite film which comprises an outer layer film which is arranged on the outer surface, is in contact with the external environment and is resistant to abrasion, a middle layer film which is fixed on the outer layer film and is used for isolating gas, moisture and light, and an inner layer film which is in contact with package contents, adsorbs gas through a porous structure and insulates heat. The porous structure comprises an open pore structure for adsorbing gas and a closed pore structure for heat insulation and heat preservation, and the open pore structure and the closed pore structure are in gradient change; the utility model has the beneficial effects that: at the opening part of the foaming PE, foam holes are communicated with one another, and gas can be diffused through channels between hole walls, so that the internal air pressure of the package is adjusted, and the risk of bag expansion is reduced; the foam holes in the closed hole structure are mutually closed, heat conduction can be effectively blocked, heat insulation and heat preservation effects are provided, meanwhile, the impact strength of the material can be improved through the foam hole structure, and the material has the buffering performance in the transportation process.

The main object of the present disclosure is to provide a battery module capable of inhibiting heat conduction between battery cells at the time of heat generation. In the present disclosure, the above object is achieved by providing a battery module having a plurality of battery cells arranged in a thickness direction, the battery module having an elastic member between adjacent battery cells, the elastic member being provided with a resin aggregate having thermal expansibility, the resin aggregate being arranged so as to include the center of the battery cell when viewed in the thickness direction, the resin aggregate having an expansion start temperature of 80°C or higher, and the resin aggregate having a thermal conductivity of 0.5 W / m·K or lower after expansion.

Provided is a reflector unit capable of sufficiently suppressing heat conduction to a chamber and suppressing occurrence of stress, and a film forming apparatus. The reflector unit includes: a first reflector member in a cylindrical shape, provided with a first engaging portion for being supported by a film forming chamber on an outer peripheral side, and provided with a first mounting portion on an inner peripheral side; and a second reflector member in a cylindrical shape, disposed inside the first reflector member, provided with a second engaging portion for being engaged on the first mounting portion and supported by the first reflector member on an outer peripheral side.

The utility model belongs to battery technical field discloses a kind of battery box, battery pack and electric device, the battery box includes box body and first cold plate, first cold plate is along transverse arrangement and box body is divided into upper battery cavity and lower battery cavity, upper battery cavity and lower battery cavity all have multiple battery group placement site;Among them, reinforcing beam is arranged in lower battery cavity, and the upper end surface of reinforcing beam and the lower surface of first cold plate have interval. Through the technical scheme provided in the application, the heat exchange problem between the upper battery cavity and the lower battery cavity in the related art can be at least solved.

The invention discloses an anti-corrosion glass fiber reinforced plastic gas pipeline and a preparation method thereof, and relates to the technical field of gas pipelines, the anti-corrosion glass fiber reinforced plastic gas pipeline comprises a straight pipe main body, sealing flange modules are arranged at the two ends of the straight pipe main body, a corner joint module is detachably installed on the straight pipe main body through the sealing flange modules, and an anti-freezing module is further arranged in the corner joint module; each of the straight pipe main body and the bent pipe main body is sequentially provided with a lining anti-corrosion layer, a steel inner core pipe, a glass fiber reinforced plastic reinforcing layer and an outer protective layer from inside to outside, the glass fiber reinforced plastic reinforcing layers are made of glass fiber reinforced plastic materials, and the outer sides of the straight pipe main body and the bent pipe main body are coated with the glass fiber reinforced plastic reinforcing layers through a cross winding process and a thermocuring process. The four-layer composite structure of the lining anti-corrosion layer, the steel inner core pipe, the glass fiber reinforced plastic reinforcing layer and the outer protective layer is adopted for synergistic effect, the glass fiber reinforced plastic reinforcing layer wrapped through the cross winding and thermocuring technology is adopted for improving the structural strength and the anti-corrosion capacity, and compared with a traditional single metal pipeline, metal corrosion and material aging are effectively prevented.