62results about How to "Block heat" patented technology

The invention belongs to lithium ion battery technical field, and specifically discloses a composite diaphragm. The composite diaphragm from the top to the bottom successively comprises a porous polymer coating, a thermal insulation layer, a base layer, a thermal insulation layer and a porous polymer coating; wherein the thermal insulation layer is a nanometer inorganic oxide layer. The invention also provides a preparation method of the composite diaphragm, which comprises the steps: dispersing the nanometer inorganic oxide into dispersant to prepare slurry, then coating the slurry on the upper and lower surfaces of the base layer, to prepare the thermal insulation layer; then dissolving polymer in solvent, adding plasticizer and stirring well, preparing polymer coating liquid and coating the liquid on the thermal insulation layer; and finally drying under the temperature of 50 to 90 DEG. The invention also provides a battery that uses the composite diaphragm. The composite diaphragm of the present invention has good heat insulation performance and good high temperature safety performance. The preparation method is capable of simple process and is easy for industrial production.

The invention discloses a laminated glass including an inner layer glass, an outer layer glass and a intermediate film, characterized in that, at least one of the inner layer glass and the outer layer glass is safety, fireproof and toughened glass, at least two layers of transparent intermediate films are arranged between the two layers of glass, wherein one layer is a protective pad pasting. The invention also discloses the process for making the laminated glass.

The invention discloses a combined building structure and an installation method. The building structure comprises first keels, second keels and interlayer modules and further comprises more than two fixing shafts and locking members arranged at two ends of the fixing shafts, wherein each first keel is provided with more than two opposite side walls vertically penetrating through the first keel and first through holes matched with the fixing shaft; each second keel is only provided with a second through hole, which is matched with the fixing shaft and penetrates through two end parts of the second keel; more than two parallel second keels are arranged between every two adjacent first keels, the fixing shafts penetrate through the first through holes of the first keels, then penetrate through the second through holes of the second keels and the first through holes of the first keels in sequence more than two times, and finally are used for locking and installing the first keels and the second keels together through the locking members arranged at two ends of the fixing shafts; and the locking members are accommodated in the corresponding first keels. The combined building structure has the advantages of simple structure, simplicity and convenience for installation, reliability for fixation, good rigidity and strength and more attractive appearance.

The invention provides a roof wall surface heat insulation building material. The heat insulation building material comprises a surface layer and a bottom layer, wherein at least one layer of reflecting material is arranged between the surface layer and the bottom layer. At least one secondary heat insulation layer is arranged between the reflecting material layer and the bottom layer. The reflecting material layer is a polyester film or aluminum foil which is plated with a reflecting metal material on both sides. The reflecting metal material plated on the polyester film is aluminum, silver, chromium or zinc which has a physical property of separating radial so the sun light cannot penetrate. The secondary heat insulation layer is one of regenerating fiber, rock wool, asbestos, glass cloth and quartz fiber, has a physical property with small coefficient of heat conductivity, and is capable of resisting heat, so the products of the invention have obvious heat insulation effect. Besides, the manufacturing method of the products of the invention has the advantages of simple process, small investment and easy popularization. The material of the invention can be directly paved on roof without being built on stilts and without connection so the use is convenient.

The invention discloses a permanent magnetic stirring device for semi-solid slurry preparation of metals. The device comprises a rack, wherein a motor is fixed on the rack, a rotating shaft of the motor is connected with a rotating mechanism, the rotating mechanism comprises a support table, a magnet fixing frame and permanent magnets, the rotating shaft of the motor is connected with the supporttable, at least one layer of permanent magnet set is fixed on the magnet fixing frame, a magnet protecting cover is fixed at the upper part of the rack, a slurry preparation container is arranged in the magnet protecting cover, and at least one blocking body is arranged in the slurry preparation container. Through arrangement of the rotating system, the slurry preparation container and the blocking body, non-contact stirring of metal slurry is realized, the purpose of uniform dispersion of solid-liquid components in semi-solid slurry in the stirring process is achieved, and the device has theadvantages of being simple in structure, reasonable in design, remarkable in effect and low in preparation cost.

The invention discloses a high-temperature high-pressure vacuumizing test device and an operating method thereof. The high-temperature high-pressure vacuumizing test device comprises a vessel holder (3), a console (4), a stander (1) for installing the vessel holder (3) and the console (4) and an interface (2), wherein a test vessel (6) which is used for arranging a test sample (5) and provided with a sealing cover is arranged in the vessel holder (3), and the high-temperature high-pressure vacuumizing test device also comprises a pressure system, a temperature system and a vacuum pump (8); the pressure system is arranged in the console (4), and the pressure system is communicated with the test vessel (6) to adjust the pressure value in the test vessel (6); the temperature system consists of a part which is arranged in the console (4) and a part which is arranged in an inner cavity of the test vessel (6), and the two parts of the temperature system are communicated with each other to adjust the temperature value in the test vessel (6); the vacuum pump (9) is arranged on the stander. The high-temperature high-pressure vacuumizing test device integrates the temperature system, the pressure system and the vacuumizing system.

The invention discloses an explosion-proof fire extinguisher. The explosion-proof fire extinguisher comprises a fire extinguishing bottle and a valve arranged above the fire extinguishing bottle and fixed to the fire extinguishing bottle; a protective device used for improving the safety performance is further arranged on one side of the fire extinguishing bottle; the protective device comprises abaffle, a fixed base arranged on the inner side of the baffle and used for fixing the fire extinguishing bottle, and a supporting plate arranged at the lower end of the fixed base, fixed to the baffle and used for bearing the fire extinguishing bottle; the end, making contact with the baffle, of the fixed base is provided with a crossed plate; the other end, opposite to the crossed plate, of thefixed base is provided with a clamping base integrally formed with the fixed base; and an elastic binding belt is arranged on the clamping base. According to the explosion-proof fire extinguisher, dueto the fact that the protective device is arranged on the fire extinguishing bottle, the using safety of the fire extinguisher can be further improved, and the beneficial effects that assembling is easy, operation is convenient, and the safety performance is high are achieved.

The invention provides a preparation method of a PLA composite material used for baby bath, which comprises the following steps: 1)adding nano attapulgite and nano mica powder in a high speed mixer for stirring for 10 minutes, dissolving a silane coupling agent in ethanol and then adding into the high speed mixer in a spray form, stirring for 30 minutes and then discharging, drying to obtain the modified nano powder; 2)placing PLA, an anti-oxidant, a flexibilizer, a cross-linking agent and a lubricant in a drying box for drying, adding with the modified nano powder in the high speed mixer for uniformly mixing to obtain a mixture; 3)adding the mixture in the step 2) into a double screw extruder for extruding and granulating to obtain the pellet; and 4)placing the pellet in a drying box for drying to obtain the PLA composite material used for the baby bath. The produced material has the advantages of good toughness, impact resistance and thermostability, is friendly to environment, and is adapted to baby bath manufacture.

The invention discloses a multipurpose moxibustion device with a smoke reversing function. The multipurpose moxibustion device with the smoke reversing function comprises moxa for moxibustion therapy,and is characterized by further comprising a fixing device for accommodating the moxa, wherein a cavity which penetrates through the top and the bottom of the fixing device is formed in the fixing device; a partition is arranged in the cavity; a fixing cavity for fixing the moxa is surrounded by the upper part of the partition and the upper part of the cavity; the partition further upwards extends to form a hollowed-out column; a plurality of smoke holes are formed in a side surface of the hollowed-out column; and the hollowed-out column communicates with the lower part of the partition. According to the technical scheme, the multipurpose moxibustion device is provided with the hollowed-out column, moxa smoke and moxa heat which are generated by combustion of the moxa are transferred to the lower part of the fixing device, the circumstance that ash generated by combustion of the moxa drops to a position below the fixing device and damages human bodies is prevented, an air inlet hole is further formed in the multipurpose moxibustion device with the smoke reversing function, thus, the moxa can be combusted fully, and the moxa-moxibustion effect is good.

The invention relates to an atmosphere protective cover for an electric slag furnace. The atmosphere protective cover comprises a shell, wherein the shell is provided with at least one electrode installation through hole; a cover plate of the shell is provided with at least one electrode blowing ring, the inner side of the electrode blowing ring is provided with a plurality of upwardly-oblique upper blowing holes which are uniformly distributed, a shell bottom plate is provided with a lower blowing ring, and the lower blowing ring is provided with a plurality of downwardly-oblique lower blowing holes; by adopting double layers of air routes, the upper blowing holes spray air to an electrode to form a conical air curtain, thereby playing a good sealing effect. The invention also relates toan electric slag furnace smelting system adopting the atmosphere protective cover. The electric slag furnace smelting system comprises a first rotating arm, a second rotating arm, a crystallizing device, a first electrode roasting apparatus and a second electrode roasting apparatus, and the atmosphere protective cover is arranged on the crystallizing device; the first rotating arm and the second rotating arm are separately used for clamping the electrode, and the first rotating arm and the second rotating arm work alternatively; and the smelting efficiency is high, and the quality of a steel ingot is good.

The invention discloses a biological basic characteristic flame-retardant epoxy resin precursor based on a natural flavonoid compound and an application of the precursor in preparation of epoxy resin.The precursor has a structure shown in the following formulas (I) and (II). The invention also discloses a preparation method of the biological basic characteristic flame-retardant epoxy resin precursor. The preparation method comprises the step of carrying out one-step reaction on the natural flavonoid compound and epoxy chloropropane to prepare the biological basic characteristic flame-retardant epoxy resin precursor. The preparation method is simple in preparation process, good in controllability, easy to implement and suitable for large-scale industrial production. Thermosetting epoxy resin obtained after the biological basic characteristic flame-retardant epoxy resin precursor is cured has excellent thermodynamic properties and flame retardance has the possibility of replacing an existing petroleum-based high-end epoxy product and is wide in application range.

The invention discloses a hurricane-resistant sound-insulating and heat-insulating window which comprises a wall body. The wall body is internally provided a sealed window frame. The sealed window frame is fixedly connected with the wall body through screws. The sealed window frame is internally provided with an aluminum alloy glass frame. The aluminum alloy glass frame is internally provided withinternal glass and external glass. A closed space formed among the front end surface of the external glass, the back end surface of the internal glass and the aluminum alloy glass frame is an interlayer. The interlayer is internally provided with a supporting frame. The front side surface and the back side surface of the supporting frame are provided with silica gel contacts. The back end surfaceof the external glass is provided with a titanium dioxide coating. The front end surface of the external glass is provided with an energy-saving film layer. The front end surface of the energy-savingfilm layer is provided with a PVB film layer. The hurricane-resistant sound-insulating and heat-insulating window has advantages of dispersing a pressure which is bear by the glass, improving safetyperformance of the window, protecting property of the people, and improving heat insulating effect and sound insulating effect of the glass.

The invention relates to an infrared-reflection heat-insulation coating and a preparation method thereof, and the infrared-reflection heat-insulation coating comprises the following components: by weight, 60-70 parts of acrylic acid copolymer, 15-20 parts of nano titanium dioxide, 4-8 parts of nano silicon dioxide, 10-16 parts of hollow microbeads, 4-8 parts of a defoaming agent and 15-20 parts of an organic solvent. The infrared-reflection heat-insulation coating is prepared by the following steps: grinding the 15-20 parts of nano titanium dioxide and 4-8 parts of nano silicon dioxide for 15 minutes; preparing an aqueous aerosol with mixed powder of the nano titanium dioxide and the nano silicon dioxide; adding the 60-70 parts of the acrylic acid copolymer, 10-16 parts of the hollow microbeads, 4-8 parts of the defoaming agent, 15-20 parts of the organic solvent, and the aqueous aerosol prepared by the mixed powder of the nano titanium dioxide and the nano silicon dioxide, stirring for 15 min, standing, and keeping warm at 30-50 DEG C for 20 min; cooling to the room temperature. The infrared-reflection heat-insulation coating can effectively isolate infrared irradiation to reduce building energy consumption, and the hollow microbeads can reduce visible radiation, and a hollow layer can obstruct heat to reduce carbon emissions.

The invention relates to freeze-dried powder coated nut meat and a preparation method thereof, and belongs to the technical field of food processing. The technical problems that in the prior art, when freeze-dried powder is applied to nut meat flavor attaching, due to high-temperature baking in a preparation technology, freeze-dried powder is oxidized, discolored and loses flavor, nut meat grease is prone to being oxidized and loses taste, the quality guarantee period is shortened, due to low-temperature baking, the freeze-dried powder cannot be completely sterilized, and the risk that microorganisms exceed the standard exists are solved. The freeze-dried powder coated nut meat provided by the invention comprises the nut layer, the grease layer, the polishing layer and the puffing layer which are sequentially arranged from inside to outside, so that the problems that microorganisms of the freeze-dried powder coated nut meat exceed the standard and discolor can be effectively controlled, and the nut meat keeps grease, has a pulp explosion taste and is rich in flavor. The invention further provides a preparation method of the freeze-dried powder coated nut meat, the grease layer is prepared, grease seepage caused by high temperature is prevented, the puffing layer can be different from the grease layer in taste, and the taste of the product is enriched.

The invention discloses a mechanical connection type connection pipe inner wall surfacing auxiliary device and a method for conducting connection pipe inner wall surfacing through the mechanical connection type connection pipe inner wall surfacing auxiliary device. The auxiliary device comprises a cylinder (1) and a plurality of connecting devices. A connection pipe end positioning device (6) is arranged on an opening of one end of the cylinder (1). A plurality of cylinder connection fulcrums (9) matched with the connecting devices are arranged on the outer wall of the cylinder (1). Each connecting device comprises a cylinder connection pull plate (2), a connection pipe connection pull plate (3) and a connecting rod for connecting the cylinder connection pull plate (2) with the connection pipe connection pull plate (3), wherein the cylinder connection pull plate (2) and the corresponding cylinder connection fulcrum (9) are movably connected. The mechanical connection type connection pipe inner wall surfacing auxiliary device and the method have the advantages that production cost is reduced, production efficiency is improved, and the work environment is improved.

The invention provides a film mulching corn cultivation fully degradable ecological color mulching film for Eastern Inner Mongolia. The film mulching corn cultivation fully degradable ecological colormulching film for Eastern Inner Mongolia comprises a middle black part and transparent parts on both sides of the black part, wherein the black part is composed of 96-66 wt% of polyethylene, 1-4 wt%of biodegradable plastic masterbatch EBP-1680, and black color masterbatch of 3-10 wt% of the total weight of the polyethylene and the biodegradable plastic masterbatch; the transparent parts on bothsides are composed of 95-99 wt% of polyethylene and 1-5% of biodegradable plastic masterbatch EBP-1607. The film mulching corn cultivation fully degradable ecological color mulching film for Eastern Inner Mongolia is highly compatible with drip irrigation under mulching films to effectively avoid early breakage of mulching films due to high-temperature of drip irrigation areas under mulching films, thereby saving labor investment and significantly improving the yield of corn.

The invention provides a sealing structure of a horizontal rotary pyrolysis kiln, and relates to sealing technology of a thermal-state sealing cover of a horizontal rotary kiln. By arranging a movableheat insulation sealing ring, a heat insulation cavity is formed between the movable heat insulation sealing ring and a flexible sealing mechanism, the heat insulation cavity can effectively block heat dissipated by a kiln tail cover and a kiln tail, and the environment temperature of the flexible sealing mechanism in the heat insulation cavity is effectively reduced, so that the service life ofthe flexible sealing mechanism can be prolonged, and the effectiveness of sealing is ensured.

The invention provides glass fiber reinforced plastic for a fishing rod and a preparation method thereof, and relates to the technical field of glass reinforced products, and the glass fiber reinforced plastic is prepared from the following raw materials in parts by weight: 8 to 10 parts of glass fiber, 3 to 5 parts of nano-kaolin, 5 to 7 parts of white carbon black, 3 to 6 parts of carbon black,5 to 10 parts of gamma-glycidoxypropyltrimethoxysilane, 10 to 15 parts of polyimide resin, 3 to 5 parts of dopamine, 5 to 7 parts of nano-boron nitride, 6 to 9 parts of polylactic acid, 14 to 21 partsof polycarbonate, 1 to 1.5 parts of polyaluminosiloxane, 1 to 2 parts of nickel aluminide, 1 to 3 parts of chromium carbide, 15 to 17 parts of ABS resin, 4 to 6 parts of sulfur, 1 to 3 parts of nanotitanium dioxide, 4 to 6 parts of polyethylene wax, 5 to 7 parts of zinc stearate, 8 to 10 parts of a solubilizing agent and 2 to 3 parts of an initiator. The preparation method of the glass fiber reinforced plastic includes three steps. The glass fiber reinforced plastic for the fishing rod has the advantages of corrosion resistance, weather resistance, toughness, scratch resistance and flame retardancy. The glass fiber reinforced plastic has higher rigidity and bending strength, is not easy to break during use, and has long service life.

The invention discloses an automatic cooker. The automatic cooker comprises a shell, a plurality of heat emitting cabins and an electric control assembly. A first mounting cavity and a second mounting cavity are formed in the shell, and the first mounting cavity and the second mounting cavity are arranged in a mutually isolated mode. The plurality of heat emitting cabins are arranged in the first mounting cavity at intervals, and each heat emitting cabin is provided with a heating cavity. Pick-and-place openings communicated with the heating cavities are formed in the front cavity wall of the first mounting cavity. The electric control assembly is arranged in the second mounting cavity. According to the technical scheme, the electric control assembly can be prevented from being overheated and burnt, the situation that the electric control assembly is damaged due to oil fume pollution is avoided, and therefore the service life of the electric control assembly is prolonged, and the service life of the automatic cooker is prolonged.

The invention discloses a protection device for pile foundation blasting. The device comprises a base, a connecting pipe and an anti-blasting net; a fixing frame is arranged at the upper end of the base, fastening screws are arranged at the upper end of the fixing frame, support legs are arranged at the lower end of the base, a protective skirt is arranged on the outer surface of the base, and a rubber pad is arranged at the lower end of the connecting pipe. According to the protection device for pile foundation blasting, an anti-rust plug, the protective skirt and the rubber pad are arranged,the phenomenon that connecting screws rust can be prevented, the service life of the equipment is prolonged indirectly, the damping, sound attenuation and connecting effects can be achieved through the connecting pipe, the protection device is firmer, the lower end of the protection device can prevent blasting through the protective skirt, the protection device is more effective, the whole protection device is tighter through the connecting screws, and the protection effect reaches the best state; by means of the rubber pad, the protection effect is increased, and the protection device is applicable to different work conditions and brings a better use prospect.

The invention relates to a heat insulation coating and a preparation method thereof, and the heat insulation coating comprises the following components: by weight, 45-60 parts of acrylic acid copolymer, 10-16 parts of nano titanium dioxide, 5-10 parts of nano silicon dioxide and 13-21 parts of glass beads. The heat insulation coating is prepared by the following steps: 1, putting the 10-16 parts of nano titanium dioxide and 5-10 parts of nano silicon dioxide in a grinding machine for grinding for 15 minutes; 2, adding the 45-60 parts of acrylic acid copolymer, 13-21 parts of glass beads and the ground nano silicon dioxide and nano silicon dioxide to a mixing container, fully stirring for 15 min and keeping warm at 30-50 DEG C; and 3, at the normal temperature, cooling to the room temperature to obtain the needed heat insulation coating. The heat insulation coating can effectively isolate infrared irradiation to reduce building energy consumption, and uses the glass beads for further obstruction of heat to reduce carbon emissions.

The invention discloses an iron tower foundation for a frozen soil foundation. The iron tower foundation for the frozen soil foundation comprises steel plate oblique beams, angle steel beams, pile connecting pieces, tower foot connecting pieces and concrete piles. The iron tower foundation adopts a cross triangular frame, the transverse stiffness of the foundation is greatly improved, and the horizontal displacement or horizontal flowing deformation of the foundation is reduced; the overall synergistic effect of pile foundations is greatly improved, the overall bearing capacity is improved, vertical deformation is more uniform, and foundation damage caused by uneven deformation is avoided; and the overall synergistic effect of the pile foundations is greatly improved, under the same stress situation, the diameter of each pile foundation is reduced, so that the manufacturing cost is reduced.

The invention discloses a traditional Chinese medicine magnet therapy medical pillow which comprises a pillow body and a pillow cover. The pillow cover is detachable, and the pillow is made from latex; the pillow is in a hollow state, and a permeable layer, a buffer layer, a traditional Chinese medicine layer, a steam generation layer and a heating layer are arranged in the center of the pillow from top to bottom; a sterilization layer is arranged on the inner wall of the pillow, and an anti-scald layer is arranged on the exterior of the sterilization layer; multiple penetration holes are formed in the permeable layer; a permeable mesh film is sewn between the buffer layer and the traditional Chinese medicine layer; the buffer layer is filled with buckwheat particles; an ultraviolet germicidal lamp is fixedly connected into the sterilization layer; magnet therapy pieces are arranged on the upper surface of the pillow. The pillow is simple in structure, convenient to install, stable instructure, long in service life and low in cost, steam is adopted for volatilizing the effectiveness of the traditional Chinese medicine, the effect is good, the infrared magnet therapy function is achieved, the physical therapy effect is increased, ultraviolet sterilization can be conducted irregularly to improve the hygienic degree, and the safety performance is high.

The invention provides a method for preparing a polyurethane adhesive for wood. The steps are as follows: (1) Grind mulberry fiber and sieve it, dry it, add it to a sodium hydroxide solution, stir it in a water bath, filter it after discharge, and dry it to a constant weight , to obtain alkalized mulberry fiber; (2) adding mica iron oxide powder and alkalized mulberry fiber to ethanol to obtain a mixed solution, adding KH-570 to the mixed solution after hydrolysis, magnetic stirring, and drying after suction filtration to obtain Compound; (3) 50-65 parts of polyurethane prepolymer, 1-2 parts of defoamer, 2-3 parts of solvent are added to the stirring tank for stirring, and after heating, continue to stir, and 6-8 parts of plasticizer, 15- Add 20 parts of filler, 0.5-1 part of coupling agent and 10-15 parts of compound into the stirring tank, continue stirring after heating, lower the temperature, add 0.5-1 part of catalyst into the stirring tank, continue stirring for 40 minutes, and obtain wood after discharging Polyurethane adhesive. The polyurethane adhesive prepared by the invention has good yellowing and aging resistance, bonding strength, heat resistance and environmental protection performance.

The invention belongs to the technical field of 3D printing, and particularly relates to a color mixing device for a 3D printer. The color mixing device comprises a fixed seat, a pushing assembly, a heating assembly, a mounting seat, a flow guide plate and a transmission assembly, a cavity is formed in the interior of the fixed seat, the pushing assembly is installed at the upper end of the fixed seat, the heating assembly is installed in the inner cavity in the interior of the fixed seat, the feeding end of the heating assembly is located right below the pushing assembly, a plurality of groups of first discharging holes are formed in the lower end of the heating assembly and are arranged in an annular array mode, and the mounting seat is mounted at the lower end of the fixed seat and is located right below the heating assembly. According to the color mixing device , through cooperative use of the fixed seat, the pushing assembly, the heating assembly, the mounting seat, the flow guide plate and the transmission assembly, an original 3D printer head assembly can be directly replaced, color mixing can be carried out on a printed piece while spraying is achieved, the structure is simple, the functions are comprehensive, and the practicability is high.

The invention discloses an overvoltage suppression system used for building equipment. The overvoltage suppression system comprises a left fixing lug, a high voltage fuse, an upper connecting end, a right cooling area, a right fixing lug, lower connecting ends, isolation areas, a sealing plate and guide grooves. The left fixing lug is arranged at the left bottom position of a shell. The right fixing lug is arranged at the right bottom position of the shell. A total high voltage fuse is arranged in the middle position of the top part of a filling area. The lower connecting ends are led out of resistors. The middle positions of the two sides of the sealing plate are provided with fixing holes. The guide grooves are arranged in the middle positions of the two sides of the shell. The high voltage fuse, the resistors and the total high voltage fuse are connected by conductors. The universality and the practicality of the system can be effectively enhanced, the range of application of the system can be effectively extended, the use cost can be reduced, the economy and the maintainability can be increased and the system is convenient for popularization and application.

The invention relates to the technical field of mosquito-repellent incense racks, in particular to an outdoor portable multi-functional mosquito-repellent incense rack and a manufacturing method thereof, including a mosquito-repellent incense storage box for storing mosquito-repellent incense and a mosquito-repellent-repellent incense rack for placing mosquito-repellent incense, the outdoor portable multi-functional mosquito-repellent incense rack and its The production method is that a certain amount of mosquito coils is conveniently stored by setting a mosquito coil storage box, and the mosquito coil holder is installed on the mosquito coil storage box, so that the mosquito coil and the mosquito coil holder can be carried at the same time, which is convenient for carrying and using outdoors, and the ignition coil can be used to complete the operation. The ignition of the mosquito coil is convenient for the mosquito coil to be ignited outdoors, and the rotating rod drives the bracket to rotate, so that the limit column slides in the bottom groove, which facilitates the friction pad to rub and slide on the bottom plate, and can clean the gray stains on the bottom plate by friction.

The invention discloses a low-smoke halogen-free polyolefin cable material capable of being vitrified at high temperature, which is prepared from the following raw materials in parts by weight: polyolefin resin, a compatilizer, a low-temperature vitrifying auxiliary agent, a medium-temperature vitrifying auxiliary agent, a high-temperature vitrifying auxiliary agent, inorganic mineral soil powder, an antioxidant and a lubricant. And the low-smoke halogen-free polyolefin cable material has the advantages of rapid ceramization speed, and high hardness and better shape maintenance of the ceramic layer after ceramization .

The invention relates to a supramolecular assembly modified ammonium polyphosphate and a preparation method thereof. Surface modification of ammonium polyphosphate (APP) by supramolecular assembly, the prepared supramolecular assembly modified ammonium polyphosphate has a lamellar structure in the microcosm, and the compatibility of the modified powder with the polymer matrix There is a significant improvement. Applying modified ammonium polyphosphate to polymers can significantly improve the flame retardancy of polymer composites.