76results about How to "Play a binding role" patented technology

The invention provides a silicon-based composite material, a preparation method thereof and a lithium-ion battery. The preparation method comprises a step of mixing SiOx and a carbon source to obtaina SiOx@carbon source mixture, a step of curing and carbonizing the SiOx@carbon source mixture under an inert atmosphere to obtain SiOx@carbon, a step of dispersing the SiOx@carbon in a solution with oxidant, simultaneously adding a conductive polymer monomer and a conductive carbon material, uniformly dispersing, and polymerizing in situ to obtain the silicon-based composite material. The silicon-based composite material is a double-shell core-shell structure material, an outer shell layer is a conductive polymer layer, an inner shell layer is a carbon layer, and the conductive carbon materialis embedded into the conductive polymer monomer. The silicon-based composite material obtained by the method can effectively improve the electrochemical performance of the lithium-ion battery when the silicon-based composite material is used as a negative electrode material of the lithium-ion battery.

The invention discloses portable electrostatic spinning equipment and a using method thereof. The equipment comprises a dry battery power source, a high-voltage electrostatic generator, a gas generator and a spinning ejection device. According to the equipment, a dry battery arranged in a battery bin is used as the power source, the high-voltage electrostatic generator comprises a DC-high voltage DC inverter and a voltage regulation circuit. The voltage provided by the dry battery is increased by the DC-high voltage DC inverter to be used as spinning voltage, the airflow auxiliary spinning technology is used, a spinning nozzle is sleeved with an airflow guide pipe connected with the gas generator, and the flow direction of airflow guided into the airflow guide pipe by the gas generator is the same as the spinning jet injection direction. The equipment is low in mass, small in size and convenient to carry, can be used with no external power source, is not limited by using environment, can precisely control and adjust spinning parameters, is convenient to use and wide in application range and can better achieve orientated fiber deposition.

The invention discloses a silicon / carbon / cavity / carbon composite material for a lithium-ion battery and a preparation method and an application of the silicon / carbon / cavity / carbon composite material. The silicon / carbon / cavity / carbon composite material has a core-shell structure; the core-shell structure comprises a housing and an inner core; the housing is made of carbon; the inner core is formed by coating nano silicon particles with the carbon; a gap layer is arranged between the housing and the inner core; and the preparation method comprises the following steps: sequentially coating the surfaces of the nano silicon particles with a carbon layer I, a silicon dioxide layer and a carbon layer II; and then removing the silicon dioxide layer through an etching method. The preparation method is simple; the cost is low; and the prepared silicon / carbon / cavity / carbon composite material has the advantages of high cycling stability, high coulombic efficiency and the like when applied to lithium-ion battery electrochemistry as a negative electrode material.

The invention discloses an airflow-guide-type directional in-situ electrostatic spraying device which comprises a spray gun, an injector and a high-voltage electrostatic generator. The spray gun comprises a spray gun handle and a spray gun pipe, a hollow metal capillary pipe coaxial with a spray gun sprayer is arranged in the spray gun pipe and communicated with the injector through a liquid incoming pipe, an annular passage formed between the spray gun pipe and the metal capillary pipe is an airflow passage, communicated with the spray gun handle and communicated with an airflow guide pipe through the spray gun handle, and a pipe cavity of the metal capillary pipe is connected with the high-voltage electrostatic generator through a guide line. Airflow of the airflow passage plays a role in orientation and constraining, ring wrapping effect and faraday cage effect are weakened, a spraying area is limited within a very small range, orientation and fixed-point spraying, of a drug solution, in a specific area are realized, and the drug solution is almost free of splashing, thereby being high in utilization rate and having better treatment effect.

The invention discloses a crashed stone grouting pile with lead holes implanted in a cloth bag and a construction method. The crashed stone grouting pile is mainly composed of a prefabricated pile tip, steel strands, the geotechnical cloth bag, a pile end pulp solidification body, a crashed stone pulp solidification pile body and a cover plate. The fabricated pile tip is arranged at the bottom of the pile body. A reserved hole allowing a grouping pipe to penetrate through is formed in the center of the prefabricated pile tip, and holes allowing the steel strands to penetrate through are formed in the edge of the prefabricated pile tip. The pile tip pulp solidification body is formed at the bottom of the prefabricated pile tip through grouting. The crushed stone pulp solidification pile body is arranged on the upper portion of the prefabricated pile tip, and the geotechnical cloth bag is arranged outside the crushed stone pulp solidification pile body. The cover plate is arranged above the crushed stone pulp solidification pile body. The crashed stone grouting pile has the advantages that performance of bulk solid material is given into full play, the problems of necking, expansion, hole collapse, mud contamination and the like are solved for the pile body, the integrity and the bearing performance of the structure are improved, sedimentation of the pile body is reduced, the improvement of the bearing capacity of the foundation is accelerated, and quality of the pile is improved.

The invention relates to textile field, especially relates to a towel producing technique, comprising following steps: combining 120S combed long staple cotton yarns and 10S combed long staple cotton yarns, then winding them to be bobbins; feeding the bobbins into a two-for-one twister to be twisted; winding the twisted yarns to be bobbin yarn, and weaving them to be grey cloth; dipping the grey cloth in the solution of a fading-boiling-bleaching combination machine, steaming, removing slurry and cotton yarn impurity; performing deoxidizing, dyeing, fermentation washing, softening, loose drying and sewing on the grey cloth to produce the towel. Filoplumes on the product surface are little since 120S combed long staple cotton yarns are used to double-twist and has a certain binding effect for disperse fabric on the surface of the yarn. The procedure of water soluble yarn removal is reduced, so that work intensity of workers is decreased, wastewater treatment burden is reduced, and environmental pollution is alleviated.

The invention discloses a ternary complex aerogel. The aerogel is a three-dimensional porous structure formed by graphene and carbon nanotube. According to the invention, amorphous silicon is embeddedon a graphene sheet layer. The invention discloses a preparation method of the ternary complex aerogel and a preparation technology for an electrode slice. The nano amorphous silicon particles are loaded on the graphene sheet layer, and large volume effect of silicon can be buffered by a three-dimensional connected framework of the three-dimensional graphene aerogel. According to the addition ofthe carbon nanotube, one on hand, the three-dimensional network formed by the carbon nanotube and the graphene sheet layer has pinning and fettering effects for silicon particles, mutual inhibition isrealized, and agglomeration is not easily generated; on the other hand, through electrostatic action or Pi-Pi bond stacking effect, and graphene bonding carbon nanotube, the electron migration rate between the graphene sheet layer apertures can be enhanced; the addition of the carbon nanotube can greatly increase the machinery performance of the aerogel, and the aerogel can employ a compressed tablet method to prepare the self-supporting electrode slice.

The invention discloses an ultra-high performance cement-based material applied to wet spraying construction. The ultra-high performance cement-based material comprises the following ingredients in parts by weight: 300-400 parts of cement, 50-100 parts of fly ash floating beads, 50-100 parts of silica fume, 40-70 parts of superfine limestone powder, 5-15 parts of a surfactant, 30-50 parts of a magnesium expanding agent, 300-400 parts of quartz sand, 100-200 parts of coral reef sand, 30-70 parts of microfilament steel fibers, 3-6 parts of ultra-high molecular weight polyethylene fibers, 1-5 parts of a mineral additive, 90-120 parts of mixing water, and 25-45 parts of a setting accelerator; wherein the surfactant is a naphthalene series or aliphatic series organic powder, the mineral additive is attapulgite gel powder with the average particle size of 5-15 microns, and the setting accelerator is an alkali-free accelerating agent with the total alkali content not larger than 1%, and the main components are aluminum sulfate and an organic amine. The ultra-high performance cement-based material can realize continuous wet spraying construction, and the mechanical property and durabilityof sprayed concrete are greatly improved. The ultra-high performance cement-based material can be widely applied to the field of cement-based material preparation.

The invention discloses a high temperature-resistant methanation catalyst preparation method. The preparation method comprises preparing a catalyst semi-finished product with composite functions from nickel as an active component, a rare earth metal as a cocatalyst, and alkaline earth metal and alkali metal as anti-carbon formation components by a precipitation method, adding kaliophilite, graphite and pure calcium aluminate cement into the catalyst semi-finished product, carrying out mixing to obtain a uniform mixture, carrying out granulation and tabletting molding, and carrying out steam curing to obtain the catalyst finished product. The high temperature-resistant methanation catalyst retains good methanation activity in a use temperature range of 300-700 DEG C and has good thermostability and anti-carbon formation performances.

An airflow guiding type orientation in-situ flash melting electrostatic spraying device comprises a control box, a liquid container, a temperature control system, a pressurization system, an electric stirring system, a liquid inlet pipe, a spray gun handle, a spray head, an airflow guiding pipe and a high-voltage wire, wherein the spray head is arranged at the front end of the spray gun handle, a metal needle connected with the liquid inlet pipe is arranged in the spray head, the high-voltage wire is connected to the pipe wall of the metal needle, an air channel formed between the outer wall of the metal needle and the inner wall of the spray head is communicated with the airflow guiding pipe through the spray gun handle, materials to be sprayed and solvent are added into the liquid container and form a constant-temperature solution under the action of the electric stirring system and the temperature control system, the solution is squeezed into the liquid inlet pipe through the pressurization system and enters the metal needle through the liquid inlet pipe, the voltage and current are controlled through the control box, and then airflow guiding type orientation in-situ electrostatic spraying is achieved. The device can be widely applied to the fields of medical hemostasis, war wound help, tissue engineering, cosmetics and industrial spraying.

The invention belongs to the technical field of lithium ion batteries. The invention especially relates to a a lithium supplementing layer and a negative pole piece thereof and the lithium ion battery. The lithium supplementing layer is formed by sequentially connecting a transition layer, an oxide layer and a surface layer; the surface layer comprises a proper amount of organic materials and filling materials; the winding temperature of the negative pole piece can be reduced, the oxide layer substance in the lithium supplementing layer is used for providing an additional lithium source, the lithium source can be continuously supplemented in the circulation process after liquid injection, the activity of the lithium layer is improved, meanwhile, a filling substance contained in the surfacelayer can effectively play a role in restraining expansion of an active substance, and the cycle performance of the battery is improved.

The invention belongs to the technical field of battery manufacturing, and particularly relates to a lithium ion battery formation method which comprises the following steps of putting a battery cellinto a formation device, and heating to 40-60 DEG C; pressurizing the battery cell, wherein the pressurizing pressure ranges from 0.9 Mpa to 1.1 Mpa; carrying out first-stage constant-current chargingon the battery cell, wherein the charging current is 0.02-0.2 C, and the charging time is 2-200 minutes; and carrying out second-stage constant-current charging on the battery cell, wherein the charging current is 0.05-0.3 C, and the charging time is 2-200 minutes. Compared with the prior art, the formation method has the advantages that the quality of an SEI film is improved, the cyclic expansion of the silicon negative electrode lithium ion battery is reduced, and the cycle performance of the lithium ion battery is improved.

The invention discloses a hot-melt expansion type textile wastewater adsorption device, and belongs to the technical field of textile wastewater treatment. Floating type adsorption balls expanding outwards are matched with petal-shaped plastic belts with a magnetic attraction function. After a wrapping bag used for binding floating strips and the bottom ends of the petal-shaped plastic belts is melt by heat, the plurality of floating strips and the petal-shaped plastic belts expand outwards and upwards under the inertia effect, at the moment, a plurality of the floating adsorption balls sleeving the floating strips are separated from the floating strips and scattered in the wastewater, and used for adsorbing fiber particles in wastewater, the petal-shaped plastic belts horizontally floating on the water surface utilize external expansion type adsorption balls at the bottom ends of the petal-shaped plastic belts to adsorb fiber flocculate floating upwards; after the petal-shaped plastic belts are electrified, the petal-shaped plastic belts can adsorb the floating type adsorption balls floating in the wastewater; and meanwhile, a large amount of gas is provided for the wastewater byutilizing a matching structure of the oval aeration bag and a second molten capsule layer, so that the floating strength of the whole device is effectively improved, and uniform diffusion of the plurality of floating type adsorption balls is facilitated.

The invention provides automobile safety clothing, and belongs to the technical field of automobiles. The technical problem that as the constraint area is small, an existing automobile safety belt is prone to injuring the human body is solved. The automobile safety clothing comprises a safety clothing body capable of wrapping the trunk portion of the human body and at least one retractor arranged on an automobile body, and a braid is connected between the retractor and the safety clothing body. The automobile safety clothing has the advantages of being large in constraint area and good in buffering effect, not injuring the human body and the like.

The invention discloses a novel self-contraction type aquatic fishing net, and belongs to the technical field of fishing nets. According to the novel self-contraction type aquatic fishing net, a flexible inner ring body is arranged at the bottom end of a net body, a plurality of connecting bags are arranged on the flexible inner ring body, and net drawing extendable bodies limited in hollow columns are connected among the connecting bags; and when fishes are lured into the net body by a bait layer, the fishes in the net body are gradually increased and bite the bait layer, the bait layer is gradually hollowed out after being bitten, the hollow columns on the inner side of the bait layer are exposed, hydrolysis filling layers in the hollow columns are gradually disintegrated and gasified when encountering water, and at the moment, bearing balls sink under the action of gravity and drive the net drawing extendable bodies to sink towards the bottom end of the net body, so that the plurality of connecting bags shrink and get close to one another after the net drawing extendable bodies fall down, the bottom of the net body shrinks along with the flexible inner ring body, automatic net drawing of the net body is completed, manual operation is not needed, the net drawing amplitude is greatly reduced, fishes are not prone to being frightened and escaping, and excessive damage to the fishes is avoided.

The invention discloses a manufacturing method of a low-eddy-current heating combined magnet and a clamping tool. The method comprises the following steps of preheating a magnet assembly; forming a thermosetting resin layer which is not completely cured on at least one surface of the pretreated magnet assembly; stacking the magnet assembly by adopting a clamping tool, forming the thermosetting resin layer which are not completely cured on the stacked surfaces of the magnet assembly and extruding the stacked magnet assembly under the extrusion force of 0.01 MPa to 2.5 MPa; baking and curing thestacked magnet assembly and the clamping tool in an oven atthe baking temperature of 150-200 DEG C for 10-24 h; cooking the above to acquire a combined manget. The invention further discloses a clamping tool for preparing the low-eddy-current heating combined magnet. According to the invention, the resin layer is formed on the surface of the magnet assembly and is heated and cured after being stacked, and extra treatment of redundant viscose is not needed.

The invention discloses a preparation method of lithium ion sieve type adsorbent particles for extracting lithium resources from liquid such as salt lake brine, seawater and underground water. The adsorbent particles take a water-absorbing polymer as a carrier, lithium ion sieve type adsorbents such as metatitanic acid type Li2TiO3, spinel type Li4Ti5O12, spinel type Li1.6Mn1.6O4 and spinel type LiMn2O4 are added in a high loading amount, and the adsorbent particles are prepared in a secondary cross-linking mode. The preparation process is simple and suitable for industrial production. The prepared adsorbent particles have the characteristics of high elasticity, porosity, high water absorption, good permeability and the like. A resin matrix is resistant to strong acid and strong alkali, a polyhydroxy structure on the surface of the matrix can effectively adsorb adsorbent particles, and the solution loss rate is effectively reduced. The method can be applied to extraction of lithium elements in salt lake raw brine, old brine, seawater and underground water resources, and meanwhile, the high-strength corrosion-resistant matrix is suitable for an industrial adsorption column process.

The invention discloses a phosphate wear-resistant paint which comprises the following components in parts by mass: 12-16 parts of 3-5mm high bauxite, 18-25 parts of 1-3mm high bauxite, 10-15 parts of 0-1mm high bauxite, 6-12 parts of 0-1mm silicon carbide, 16-28 parts of high bauxite powder, 8-12 parts of aluminum hydroxide powder, 5-10 parts of Suzhou sludge, 8-15 parts of calcined alumina powder, 2-5 parts of silicon micropowder, 1-3 parts of oxalic acid and 1-2 parts of high-alumina cement. The spraying method comprises the following steps: uniformly mixing the raw materials, adding the mixture into a spraying machine, adding a phosphoric acid solution, uniformly mixing, adding the phosphoric acid solution at the spray gun outflow, and carrying out spraying construction. The phosphate wear-resistant paint product has the advantages of favorable binding strength, high adhesive rate, high setting rate, high medium / high-temperature strength, favorable wear resistance, favorable thermal shock stability, favorable mechanical wear resistance and favorable erosion resistance, is convenient for construction, and can be widely used in discharge hoods, grate coolers, kiln tail smoke-box moon gates, cyclone burners, tertiary air pipes and other irregular positions.

The invention provides a sounding device, a voice coil thereof and a winding method of the voice coil. The voice coil is provided with a through hole, and the voice coil comprises a first voice coil and a second voice coil fixedly connected with the first voice coil. The second voice coil comprises an inner layer which is connected with the first voice coil and forms a through hole with the firstvoice coil, and an outer layer which is formed at one side, far away from the through hole, of the inner layer. The outer layer is provided with a protruding part protruding out of the inner layer inthe axis direction of the through hole; the surface of the side, away from the through hole, of the first voice coil is coated with the protruding part; the protruding part is connected with the firstvoice coil; and the number of single-layer turns of the outer layer is equal to the sum of the number of single-layer turns of the inner layer and the number of single-layer turns of the first voicecoil. Compared with the prior art, the sounding device, the voice coil thereof and the winding method of the voice coil reduce the influence of the first voice coil on the second voice coil, thereby achieving the purpose of arranging the voice coil so as to improve the performance of the voice coil.

The invention discloses a die forging high-strength scraper conveyor, and belongs to the technical field of conveyors. The die forging high-strength scraper conveyor comprises a supporting assembly, atransmission assembly and a power source assembly, wherein the supporting assembly is located on the outermost side of the whole set of die forging high-strength scraper conveyor, the transmission assembly is arranged at one end of the supporting assembly, and the power source assembly is arranged on one side of the transmission assembly. The die forging high-strength scraper conveyor is scientific and reasonable, and safe and convenient to use; and according to the die forging high-strength scraper conveyor, a curved-surface pressed rotating block is stressed to rotate by utilizing reactionthrust of materials on scrapers, the end, close to a transmission column, of the curved-surface pressed rotating block can generate upward pushing force on the transmission column, and the cambered-surface contact surfaces of cambered-surface convex blocks and filling blocks are utilized, so that the cambered-surface convex blocks push the filling blocks to support a rubber sleeve, the supported rubber sleeve can be inserted into the materials between the two adjacent scrapers, and the plurality of filling blocks act together to play a role in restraining the materials, so that the contact between the materials is more compact, and the materials are not prone to scatter in the inclined state of an inclined conveying baffle area.

The invention discloses an inorganic mineral waterproof active master batch, which comprises the following raw materials in percentage by weight: 20 to 80 percent of attapulgite or modified attapulgite, 5 to 20 percent of a thickening moisturizer, 5 to 30 percent of water glass, 10 to 30 percent of active aluminum salt, 0 to 15 percent of an early reinforcing agent and 0 to 5 percent of a water reducing agent. The waterproof active master batch is a permeable crystalline dense waterproof material, is obtained by dry mixing of various active mineral auxiliaries, and is an advanced novel powdery waterproof material which is green, odorless, nontoxic and pollution-free.

The invention relates to a preparation method of aluminum adsorbent particles suitable for extracting lithium from original brine and old brine of a salt lake. The adsorbent particles are prepared by taking a water-absorbing polymer as a carrier, adding aluminum adsorbents such as lithium aluminum hydrotalcite, magnesium aluminum hydrotalcite and aluminum hydroxide with high loading capacity and carrying out secondary cross-linking. The preparation process is simple and suitable for industrial production. The prepared aluminum adsorbent particles have the characteristics of high elasticity, porosity, high water absorption, good permeability and the like. A resin matrix is resistant to strong acid and strong alkali, a polyhydroxy structure on the surface of the matrix can effectively adsorb adsorbent particles, and the solution loss rate is effectively reduced. The method can be applied to extraction of lithium elements in salt lake raw brine, old brine, seawater and underground water resources, and meanwhile the high-strength particles are suitable for an industrial adsorption column process.

The invention relates to the technical field of postpartum nursing accessory devices, in particular to a novel postpartum gynecological nursing device. The floor area of the novel postpartum gynecological nursing device can be conveniently adjusted according to a using site, so that the using limitation is reduced; in addition, the novel postpartum gynecological nursing device can facilitate recovery of the pelvis of a pregnant woman, so that the practicality is improved. The novel postpartum gynecological nursing device comprises a left base, a right base, two sets of left supporting rods, two sets of right supporting rods and two sets of handrail rods, further comprises two sets of limiting tubes and two sets of limiting rods, further comprises two sets of left supporting plates, two sets of right supporting plates, four sets of left fixing rings, four sets of right fixing rings, two sets of limiting plates, a plurality of sets of connecting rods and a plurality of sets of pulleys, and further comprises a pelvic correcting belt, a plurality of sets of hanging rings and a plurality of sets of hanging hooks, wherein each of the two sets of handrail rods comprises two sets of adjusting threaded pipes and two sets of adjusting threaded rods; two sets of knobs are arranged at the right ends of the two sets of adjusting threaded rods respectively; the pelvic correcting belt comprises a back part, a first fixing part and a second fixing part; the plurality of sets of hanging rings are sewn to the first fixing part; the plurality of sets of hanging hooks are sewn to the second fixing part.

The invention discloses a method for preparing lithium ion sieve-type adsorbent particles used for extracting liquid lithium resources such as salt lake brine, seawater, and groundwater. The adsorbent particles use water-absorbing polymers as carriers, and add lithium-ion sieve-type adsorbents such as metatitanic acid-type Li 2 TiO 3 , spinel Li 4 Ti 5 o 12 , spinel Li 1.6 mn 1.6 o 4 , spinel LiMn 2 o 4 etc., and are prepared by secondary cross-linking. The preparation process is simple and suitable for industrial production. The prepared adsorbent particles have the characteristics of high elasticity, porosity, high water absorption and good permeability. The resin matrix is ​​resistant to strong acids and alkalis, and the polyhydroxyl structure on the surface of the matrix can effectively absorb adsorbent particles and effectively reduce the rate of dissolution loss. Corroded substrates are suitable for industrial adsorption column processes.

A method for preparing soybean fiber yarn and PTT fiber blended yarn by Siro-spinning. It contains 1, adopting Siro-spinning technology, 2, adopting 10-20 % (by weight) of PTT fiber and soybean fiber yarn to blend, making PTT fiber producing thermal contraction by post heat treatment for increasing amplexation force among adjacent fibers to avoid fuzzing and pilling, the temperature is 105-110 degree centigrade for 2-5 minutes, said produce is finely fixed by the binding action of PTT fiber.

The invention discloses a medium-frequency coiling soft cable for a charging smart energy airport and a production process thereof. The medium-frequency coiling soft cable comprises a main cable core,and a non-woven winding layer, an inner lining layer, an aramid fiber weaving layer and a protection case which are wrapped outside the main cable core, wherein three power cable cores are arranged in the main cable core by 120 degrees; power assisting cable cores are arranged among power cable cores; control beams are arranged among adjacent power cable cores and power assisting cable cores; andconductor beams comprise a plurality of conductors which are distributed along the circumferential direction of the power cable cores. The cable is small in floor space, and has high flame retardance, superior tension resistance and torsion resistance. The conductors are uniformly arranged in the power cable cores, so that the magnetic fields can be counteracted with each other to lower the induce, thereby enhancing the electrifying performance.

The invention provides a transistor, a display substrate, a display device and a manufacturing method thereof, and belongs to the field of semiconductors. The transistor comprises a semiconductor structure; the semiconductor structure comprises: a source region, a drain region, a channel region and a capture region, wherein the channel region is located between the source region and the drain region and is constructed as a carrier migration passage between the source region and the drain region in the on-state of the transistor; and the capture region is at least partially embedded in the channel region and is constructed to capture carriers migrating between the source region and the drain region in the off-state of the transistor. Based on the design of embedding the capture region intothe channel region, in the invention, the migration carrier of the off-state leakage current can be restrained by using the capture region, thus the off-state leakage current of the transistor can bereduced, and the performance of relevant devices and products is enhanced.

The invention provides a composite structure liquid conveying pipe. The composite structure liquid conveying pipe comprises a polymethyl methacrylate pipe, a felt layer, a metal net, a nylon layer and the like, wherein the polymethyl methacrylate pipe located on the inner layer makes direct contact with conveyed liquid, and as the properties of the polymethyl methacrylate pipe are stable, the polymethyl methacrylate pipe can be used for conveying various kinds of liquid. As polymethyl methacrylate has a high coefficient of thermal expansion, the polymethyl methacrylate pipe can handle the size changes of most kinds of liquid along with the temperature. In order to overcome the defect of low strength of the polymethyl methacrylate pipe, the metal net is arranged to play a role in binding the polymethyl methacrylate pipe, so that the mechanical strength is improved. In order to prevent the metal net from scratching the outer surface of the polymethyl methacrylate pipe, the stretchable felt is arranged between the metal net and the polymethyl methacrylate pipe. Finally, the outermost portion of the composite structure liquid conveying pipe is wrapped with nylon materials with stable performance, so that the whole composite structure liquid conveying pipe has both mechanical strength and thermal expansion properties.

The invention discloses safety fabric and a manufacture method thereof. The safety fabric comprises a first cotton cloth layer, a cotton fiber layer and a second cotton cloth layer which are arrangedfrom top to bottom sequentially. A plurality of connection threads are arranged between the first cotton cloth layer and the second cotton cloth layer, and penetrate the cotton fiber layer. The safetyfabric and the manufacture method thereof have the advantages that cotton fiber strips with twist are used for being twisted with water-soluble fibers, the twist of the cotton fiber strips is removedor reduced, and accordingly, the cotton fiber strips can be unfolded; the unfolded cotton fiber strips lose memory points on the original twist, thereby having a good sense of fluffiness; through control of the washing degree and proportions of the cotton fiber strips and the water-soluble fibers, partial or complete hydrolysis of the water-soluble fibers is realized; if the water-soluble fibersare hydrolyzed completely, the safety fabric is truly all-cotton fabric; the internal cotton fiber strips lose or are likely to lose the twist to have high fluffiness, and accordingly, excellent handfeel can be achieved.