1130results about How to "Guaranteed protective effect" patented technology

The invention relates to an ecological protection method for a high steep side slope. The method mainly comprises the steps of slope surface treatment, concrete shotcrete and rock bolt support, vegetating hole arrangement, net spreading, spray material preparation, granule spray sowing, maintenance, management, and the like. In the method, guest soil materials such as humus loam rich in organic matters and clay are utilized to undergo a granule reaction after mixed with a granule agent at the moment of spray sowing so as to form a greening template which has the same high order granule structure as natural soil and strong erosion resistance and can suppress water and soil loss. After a diversified mature plant community which is in harmony with surrounding vegetation environment is formed, the slope surface can be protected, which can effectively resist diseases and insect pests and maintain the ecological balance. Post maintenance management and expenses can be saved. All used materials can be naturally degraded, have no pollution to the environment and can purify air and beautify the environment. Equipment of the method does not need to be hung on the slope surface for construction, and spray sowing operations are carried out only below the slope surface, thus the method has high construction speed and safety. The method is suitable for slope surfaces which are difficult to green, and the like, such as various high steep and unstable slope surfaces, bare slope surfaces having high greening expected values, and the like.

The invention discloses a modified epoxy resin anticorrosive paint which is prepared from the following raw materials in parts by weight: 40-55 parts of a modified epoxy resin, 3-10 parts of a polystyrene rubber, 5-18 parts of mica powder, 6-15 parts of quartz powder, 3-12 parts of nano-sized iron oxide, 3-10 parts of zinc powder, 5-16 parts of ceramic micro powder, 2-6 parts of molybdenum disulfide, 2-5 parts of polytetrafluoroethylene, 3-5.8 parts of an aminosilane coupling agent, 3-5 parts of a coalescing agent, 3-7 parts of a reactive diluent, 0.3-0.7 part of a defoaming agent, 0.3-0.6 part of leveling agent, 20-35 parts of deionized water and 0.6-1.5 part of a curing agent. The modified epoxy resin anticorrosive paint provided by the invention is strong in force of adhering to base materials, good in anticorrosive performance, high in impact strength and excellent in weather fastness.

A method for providing a coating layer with well protection and thermal conductivity, providing a coating layer material, the coating layer material set on a workpiece to form a coating layer with thickness 160-500 micrometer. The coating layer is able to avoid wear of the surface of the workpiece, and has well protection and thermal conductivity, to avoid the situation of damage or mechanical property changing occurred due to the temperature of the surface rising caused by the friction.

The invention belongs to the technical field of preparation of high-temperature alloy, and particularly relates to a method for preparing NbSi superhigh-temperature alloy by SLM (selective laser melting) technology. SLM equipment is utilized, the process parameters are reasonably set, and an NbSi alloy forming piece is directly prepared by a CAD (computer-aided design) model in a one-step way. The prepared NbSi alloy has the characteristics of high density, fewer defects, fine phase size and uniform distribution, and mainly consists of Nbss solid solution and Nb5Si3 strengthening phase. The NbSi alloy prepared by the method has the advantages that a die is not needed, the interface reaction is avoided, the alloy pollution is reduced, the content of impurities is reduced, the utilization rate of material is high, and the comprehensive yield and production efficiency of the NbSi alloy can be improved.

Six slots along axial line are made on head of plug body. The head portion is an arc shaped male tab. Claws are located outside the body case, and outer sheath is located outside the claws. Nut is screwed on postmedian portion of the body case. Three claws with barbs are placed between inner male tab of the body case and the nut in order to restrict axial drunkenness of claws. Radial clearance is kept between the outer sheath and the claws. There are five straight holes with different diameters and two cone shaped bores inside head of socket shell. The holes are matched to diameters of plug. The cone-shaped bores are guide holes. Outline of insulator is in step shape, where small end is extended out of the straight hole, and large end is stopped by the inner hole of shell. Full escaping lock connection between socket and plug is adopted in the invention so as to guarantee quick plugging in or out, and provide firm bond between socket and plug under execrable mechanical condition.

The invention relates to a world wide web (WEB) hotlinking protection method and a gateway system thereof. The gateway system comprises a gateway configuration module, a hotlinking protection identification generating and distributing module and a hotlinking protection identification extracting and verifying module. 1) A pre-gateway is built between a client-end and a WEB server, the pre-gateway configurates hotlinking protection file types for the WEB server represented by the pre-gateway, the hotlinking protecting function is activated after the configuration takes effect. 2) According to a request type from the client-end, the pre-gateway judges whether a resource request is in the hotlinking protection file types. 3) The hotlinking protection identification is extracted and verified, the resource request meeting set conditions is transmitted to the WEB server from the pre-gateway. By means of the WEB hotlinking protection method and the gateway system thereof, a hotlinking attack can be confirmed in time, the source request is rejected, the WEB server and the diversity and the differentiation of an operation system are shielded, the software configuration of the server does not need to be changed, the service to WEB is transparent, and the previous management model is not affected.

The invention provides a method for manufacturing a metal surface self-cleaning high-protection film. The method comprises two steps of molybdate solution soaking treatment and plant corrosion inhibitor-low-surface-energy material collaborative modification treatment. According to the molybdate solution soaking treatment step, a composite film which is of a specific micro / nano coarse structure, has the good protection effect and is composed of metallic oxides, molybdenum oxide and metal molybdate can be formed on a metal surface, and therefore according to the plant corrosion inhibitor-low-surface-energy material collaborative modification treatment step, efficient green plant corrosion inhibitors can be introduced into the film, and the protection effect can be obviously improved. Due to the hydrophobization effect of the low-surface-energy material on the film, the film has the self-cleaning function, the pollution can be avoided, the probability of direct contact of metal materials and corrosive media can be reduced, and the protection effect of the film can be further improved. The method has the advantages of being environmentally friendly, simple in process, convenient to operate, capable of being easily and industrially produced in a large-scale mode and the like.

The invention discloses a method for preparing a ceramic tile antifouling agent. The method for preparing the ceramic tile antifouling agent comprises the following steps of: mixing methyl hydrogen-containing silicone oil, fluoro silicone oil, amino silicone oil and a solvent at the temperature of 10-60 DEG C under a stirring action; adding an adjusting agent to adjust pH value of a system to be between 3 and 8; and continuously stirring for 10-60 minutes to obtain the ceramic tile antifouling agent. After being uniformly coated on the surface of a ceramic tile, the ceramic tile antifouling agent can infiltrate into the surface of the ceramic tile and form a stable chemical bonding action so as to form an organosilicon enhanced protection layer with hydrophobic and oleophobic properties, so that long-acting, high-luminosity and wash-resistant antifouling performance is realized. The ceramic tile antifouling agent prepared by the invention has the advantages of superior performance, wide application range and convenience for production, and is an ideal antifouling nursing agent for modern ceramic tiles.

The invention relates to a material delivery transfer device, and the device comprises a storage and delivery trolley with wheels, wherein a buffering cushion is arranged on the storage and delivery trolley; the buffering cushion is provided with a plurality of delivery containers which are in one-to-one correspondence with materials prepared for stations of produced or repaired products; the delivery containers are counter bores formed in the upper surface of the buffering cushion and matched with the corresponding materials in appearance; the inner wall of each counter bore or the buffering cushion near to the counter hole is adhered with a first label matched with the type of the corresponding material; the first labels can be managed by color codes; a plurality of colors can be configured to respectively represent a plurality of models of the products. The material delivery transfer device disclosed by the invention is designed according to standardization, modularization, flexibility and visualization; the delivery containers have constant volume and are fixed according to the characteristics of the materials needed by stations of the produced or repaired products, and are designed by using the station as unit; the buffering cushion can protect the materials; the materials need not to be packed and no dismounting of the packing is needed, so waste of the resources is reduced and the work efficiency is improved as well.

The invention discloses a modification method for improving corrosion resistance and surface functionalization of a biomedical magnesium-based metal material. The modification method for improving corrosion resistance and surface functionalization of the biomedical magnesium-based metal material comprises the following steps: preparing a Tris-buffer solution with a pH value of 7-12, adding a compound which has a certain concentration and is of a phenolic hydroxyl structure or also adding a compound which has a certain concentration and is of a multi-amino structure. The modification method for improving corrosion resistance and surface functionalization of the biomedical magnesium-based metal material is mild in reaction conditions, simple and easy to operate, relatively low in cost and favorable for after-treatment. The magnesium-based metal material prepared by the method and treated with modified coating has relatively excellent corrosion resistance; by virtue of introduction of different components, a plurality of reactive functional groups can be successfully introduced into the prepared material; the prepared material can be used for subsequent fixation of biological molecules (such as heparin, endothelial cell growth factor VEGF, various types of biological function protein and the like) or introduction of biological functions, is capable of exerting the corresponding biological functions and provides a novel research model for application of magnesium and magnesium alloys to cardiovascular materials.

A light-weight side gusset for a bag includes a formed composite frame having a peripheral raised region and a depressed central region. An opening through the depressed central region forms a relatively narrow border portion around the inner periphery of the raised region. A central panel corresponding in configuration to the outline of the depressed region is attached to the border portion of the depressed region to cover the opening therethrough. The composite frame is made up of a moldable substrate, e.g. ethyl vinyl acetate foam, an outer layer wear-resistant material, e.g., high-denier nylon or poly / nylon combination, and, preferably, an inner adherent layer, e.g., the loop half of a hook-and-loop fabric. A complete bag is assembled by securing two such gussets to the body of the bag. Methods of manufacturing the composite frame, a gusset including such frame, and a bag including such gussets are also disclosed. During the frame manufacturing process, a flat sheet of substrate is covered an one side by the wear-resistant material and, preferably, an the other side by the adherent layer. Incisions are cut through a central region of the substrate-adhered materials composite. The composite is then molded to provide the peripheral raised region and the depressed central region of the frame, with the raised surface being covered by the wear-resistant material.

The invention discloses high-performance water-based wood coating which is prepared from the following raw material components in parts by weight: 50-75 parts of silica sol-acrylic polyurethane composite emulsion, 1-5 parts of nanometer aluminum oxide, 1-5 parts of nano-zinc oxide, 0.1-0.25 part of polytetrafluoroethylene, 1-3 parts of bamboo charcoal powder, 0.5-3 parts of bentonite, 1-2.5 parts of alcohol ester 12, 1.5-3 parts of tripropylene glycol n-butyl ether, 0.1-0.8 part of 2,2,4-trimethyl-1,3-pentanediol isobutyrate, 0.1-0.3 part of 2-amino-2-methyl-1-propyl alcohol, 0.1-0.5 part of a silane coupling agent, 0.1-1 part of an antifoaming agent, 0.5-3 parts of a thickening agent and 5-20 parts of water. The high-performance water-based wood coating disclosed by the invention is high in strength, high in wear resistance and scratch resistance, excellent in antibacterial performance, high in water resistance and aging resistance, simplicity in construction and long in service life.

The invention discloses a networked distributed numerical control system range design method, which is used to solve the technical problem that the practicability of the existing network range designmethod is poor. The technical scheme is as follows: a network range is divided into an infrastructure layer, a service support layer and a test presentation layer from bottom to top; the infrastructure layer is designed in detail, and the infrastructure layer includes hardware and software, wherein the hardware includes audit equipment, a PLC and a motor, and the software includes Vmware, VxWorksand Wireshark; the service support layer is designed, and the service support layer includes a server, namely, MES, process design and network simulation; and the service support layer is designed, and the service support layer includes a server, namely, MES, process design and network simulation. The security of a DNC network can be detected online, in real time and in depth. Continuous securitydetection and vulnerability scanning can be carried out on the DNC network. Continuously updated industrial viruses and network viruses can be trapped. The method has good practicability.

The invention provides aqueous on-rust inorganic zinc-enriched coating, which comprises components A and B, wherein the component A serving as a base material comprises 1 to 2.5 percent of lithium hydroxide, 45 to 60 percent of solution of potassium silicate, 15 to 35 percent of deionized water, 4 to 10 percent of silica solution, 1 to 3 percent of assistant and 5 to 10 percent of acrylic emulsion; and the component B is zinc powder. In the invention, the drawback that the aqueous inorganic zinc-enriched coating in the prior art cannot be coated under the condition of low surface treatment ofsteel in the prior art is overcome, and the product provided by the invention can be coated under the condition of low surface treatment, namely the condition that the surface of the steel is rusted to form compact coating, and has the advantages of water resistance, temperature resistance, high self-drying speed, long-lasting anti-corrosion performance, and the like.

The invention discloses a Power over Ethernet (PoE) port overvoltage comprehensive protection circuit and a method for realizing the circuit. The PoE port overvoltage comprehensive protection circuit comprises two-stage protection circuits, wherein the first-stage protection circuit adopts a triode gas discharge tube and is used for discharging lightning stroke current to the ground; the second-stage protection circuit adopts a clamp type overvoltage protection device and is used for carrying out first-stage residual voltage and electrostatic protection; a resistor and common-mode inductor combination circuit is adopted between the first-stage protection circuit and the second-stage protection circuit and is used for coordinating performance characteristics among the two-stage protection circuits and the device so as to achieve the effect of decoupling between the first-stage protection circuit and the second-stage protection circuit. Owing to the PoE port overvoltage comprehensive protection circuit, the balance of protection circuits can be enhanced and the amplitude and energy for conversion from common-mode overvoltage to differential-mode overvoltage can be reduced so as to improve the protection effect.

The invention discloses a flexible stab-resistant material arranged without gaps and a preparation method of the flexible stab-resistant material. The stab-resistant material comprises a flexible fabric and a plurality of small protecting modules fixedly arranged at two sides of the flexible fabric, wherein the plurality of small protecting modules are arranged without gaps in a certain way; the peripheral edge of each small protecting module is provided with a certain slope; the flexible fabric is made of a chemical fiber material or a high-strength and high-modulus material and is used for tightly connecting the small protecting modules at two sides; each small protecting module is made of a thermoplastic reinforced composite or a metal material. The invention also discloses a preparation method of the flexible stab-resistant material arranged without gaps. The flexible stab-resistant material arranged without gaps can be processed into various styles of stab-resistant body armors and protecting articles, the stab resistance of the stab-resistant material is improved, and meanwhile the flexibility of the stab-resistant material is also improved to the greatest extent.

The invention discloses an offshore floating wind power generation cable, which comprises conductors, insulating layers, an inner lining layer, an inner protection layer, tensile components, floating components, a waterproof layer, protective layers and an outer sheath, wherein the conductor is coated with the insulating layer by way of extrusion so as to form insulating wire cores, and a plurality of insulating wire cores are stranded into a cable core; the cable core is respectively coated with the inner lining layer and the inner protection layer by way of extrusion; two protective layers are wound outside the inner protection layer, each protective layer consists of a plurality of protective elements which are arranged in the shape of circle, and each protective element is formed by coating the tensile component with the floating component by way of extrusion; the two protective layers are respectively coated with the waterproof layer, the protective layer and the outer sheath by way of outward extrusion; the insulating layers and the inner lining layer are made of thermoplastic elastomeric materials by way of extrusion; and the insulating layer is made of thermoplastic polyolefin (TPO) materials in thermoplastic elastomer (TPE), and the inner lining layer is made of toughened polystyrene (TPS) materials in TPE. The wind power generation cable of the invention has the advantages of low temperature resistance, bending resistance, torsion resistance, abrasion resistance, water blocking, corrosion resistance, weather fastness, high tensile strength, and capability of effectively preventing the damages of stormy waves and other floaters over the sea to the cables.

This invention provides one fiber strengthening metal or ceramics layer compound materials compound protection board in load board technique field, wherein, the protection board has at least one metal layer, fiber layer, ceramics layer structure under high temperature through active welding process, powder bursting process or active metal welding process to connect metal layer, fiber layer and ceramics layer.

The invention relates to an optical fiber laser cutting head for a laser cutting system. The optical fiber laser cutting head comprises an optical fiber connector, a horizontal adjusting device, a focus adjusting device, a protective glass device, a gas guiding device and a cutting head which are connected sequentially from the top to the bottom in a coaxial mode. The optical fiber laser cutting head is characterized in that in the focus adjusting device, a focus adjusting barrel is assembled in a focus adjusting barrel slide movably, a focus adjusting knob base is fastened on a focus adjusting base, a focus adjusting dial and the focus adjusting knob base are fastened together, a focus adjusting knob is clamped in an inner hole in a focus adjusting knob base through the focus adjusting dial, and the focus adjusting knob can rotate smoothly but can not move axially. A clamping groove is formed in the outer side of a focus adjusting barrel connecting plate, an annular boss is arranged on the inner side of the focus adjusting knob, the center of the annular boss and the rotation center of the focus adjusting knob are biased, and the annular boss is embedded in the clamping groove in a matched mode. A focus lens is arranged in the focus adjusting barrel. The optical fiber laser cutting head is fast in focus adjusting and can guarantee cutting quality, protective glass is convenient to detach, and adjusting is not required after the protective glass is detached and installed. The gas guiding device can effectively assist laser cutting and improve cutting quality.

The invention provides an anticorrosive coating for a chemical storage tank and a construction method thereof. The anticorrosive coating comprises at least two anticorrosive coating units sequentially connected on the inner wall of the chemical storage tank, wherein each anticorrosive coating unit comprises a primer layer and a sprayed polyurea layer, the thickness of the primer layer of each basic anticorrosive coating unit is 10-100 microns, and the thickness of the sprayed polyurea layer is 0.5-1 mm. The inner wall of the chemical storage tank connected with each primer layer is obtained through sand blasting treatment or through sand blasting and acid pickling treatment sequentially. The thickness of each basic anticorrosive coating unit of the anticorrosive coating is small, the anticorrosive coating can be completed through one-time construction, and the polyurea layers are free of joints and tightly combine with the inner wall of the chemical storage tank to form a complete isolation layer. By adding an acid pickling step, tiny sharp corners on the surface subjected to the sand blasting treatment are decreased, the phenomenon that the basic anticorrosive coating cannot completely cover the surface of the inner wall is prevented, and the continuity of the basic anticorrosive coating is ensured.

The invention relates to the field of magnesium alloy, in particular to a preparation method of a comprehensive protective wave-absorbing coating on the surface of magnesium alloy and various coatings prepared by the method. The wave-absorbing coating is coated on a micro-arc oxidized ceramic layer on the surface of the magnesium alloy, so that the comprehensive coating which is good in corrosion resistance and in wave-absorbing functionality can be prepared. The invention adopts a magnesium alloy micro-arc oxidation technology and a wave-absorbing coating composite technology, the stable micro-arc oxidation technology is carried out in case of large area by the magnesium alloy micro-arc oxidation technology, and a ceramic layer with a compact microstructure is prepared, so that the corrosion resistance of the magnesium alloy can be obviously improved. The wave-absorbing coating composite technology can be used for sealing the ceramic layer, so that the corrosion resistance of the ceramic layer can be further improved, and the ceramic layer has the function of wave absorption as well. The comprehensive coating provided by the invention has the characteristics of being good in corrosion resistance, wide in electromagnetic wave absorbing frequency range, high in absorption rate, firm in surface bonding and the like, is widely applicable to the fields such as aviation, aerospace, war industry and electronic products, and is high in social value and economic value.

The invention discloses a semi-object demonstration verifying platform and method for the information safety protection of an industrial control system. The platform comprises a physical layer, a control layer and a monitoring layer, wherein the physical layer, the control layer and the monitoring layer are connected sequentially. The physical layer is used for constructing and displaying a virtual physical object mode, simulating an operating physical object model under the control of a control instruction of the control layer, and generating real-time field data. The control layer is used for generating the control instruction according to the production real-time data uploaded by the physical layer and a unified dispatching instruction sent by the monitoring layer and an embedded information safety protection algorithm. The monitoring layer is used for generating the unified dispatching instruction according to the system real-time operation data and control instruction uploaded by the control layer, and achieving the real-time monitoring and control of an actual production process. The platform provided by the invention is used for achieving the research and verification of the information safety protection theory in different industrial control fields. The platform is transparent in attack propagation, is intelligent and visual in protection, and solves a problem that a conventional verifying platform is not high in expandability.

The invention provides a pearl fiber blended yarn, which is prepared from 35 to 45 percent of tencel, 35 to 45 percent of modal fiber and 15 to 25 percent of pearl fiber by weight percentage through blended spinning. The invention also provides a slippery ventilated comfortable sweater woven from the pearl fiber blended yarn and a method for producing the same. The sweater or an underwear product also has the characteristics of the tencel, the modal fiber and the pearl fiber, is slippery and soft in hand feeling and ventilated, has good hygroscopicity, is not toxic and irritative to a human body, and can make pearl particles give play to functions of caring skin, beautifying, clearing fever and whitening after contacting with skin for a long time. The calcium carbonate content in the pearl fiber blended yarn has far infrared emission function and ultraviolet resistant function, and can not only accelerate human body microcirculation and promote metabolism, but also prevent skins from being hurt by ultraviolet, thus the pearl fiber blended yarn has certain health care and protective effects on the human body.

The invention discloses a pure polyester powder coating with permeability, pertaining to the powder coating technique field of electrostatic coating. According to weight proportion, the components of the invention are 50 to 60 percent of outdoor polyester resin, 3 to 5 percent of curing agent, 0.8 to 5 percent of flow agent, 1 to 20 percent of pigment, 0.1 to 0.8 percent of degasifying agent, other additives and excessive materials filler. The invention is produced by using the existing powder coating production technique, and the degasifying agent is one of the polyethylene waxes of APP230F, 230VF, 620F, 620VF, 620XF. The invention has the advantages of being widely applicable to powder coating treatment of devices such as castings, etc., and having smooth coating surface, and good construction performance and internal quality.

The invention discloses a quartz stone anti-fouling agent and a preparation method and application thereof. The quartz stone anti-fouling agent comprises the following raw materials in percentage by mass: 6-16% of methyl hydrosilicone oil, 2-8% of hydroxyl-terminated polydimethylsiloxane, 0-5% of methyl silicone oil, 1-2% of cosolvent, 0.5-5% of silane coupling agent and 70-85% of solvent. The quartz stone anti-fouling agent is specially developed for coarse and porous quartz stone which is vulnerable to fouling; and by simply smearing the anti-fouling agent on the surface of the quartz stone, the quartz stone can be effectively protected from oil pens, ink, coffee, tea and other pollutants. The quartz stone anti-fouling agent disclosed by the invention is simple in preparation process, good in anti-fouling property and favorable in scrub resistance and durability, can not influence the surface gloss of the quartz stone, and is non-toxic and non-corrosive, thus not only being applicable to the quartz stone, but also being applicable to agglomerated stone, marble, matt tiles and the like.

The invention discloses a corrosion protection method of fluoride molten salt and / or chloride molten salt and the application of chrome. The corrosion protection method comprises the step that chrome is added into a fluoride molten salt and / or chloride molten salt system served by stainless steel or corrosion-resistant alloy. The use amount of the chrome meets the requirement that the chrome exists all the time in the protection process. The corrosion protection method is simple, feasible, safe, environmentally friendly, easy to operate and control, and remarkable in effect; by means of the corrosion protection method, the corrosion speed of the high-temperature fluoride molten salt and the chloride molten salt can be decreased remarkably, especially intergranular corrosion of stainless steel can be effectively restrained and relieved, and the service life of the stainless steel in the high-temperature fluoride molten salt and the chloride molten salt is prolonged; in addition, by means of the corrosion protection method of the fluoride molten salt and / or the chloride molten salt and the application of the chrome, the material selection range of alloy structure materials used for fluoride molten salt and chloride molten salt media can be broadened; meanwhile, the unique advantages of the molten slat can be utilized, and the molten salt can serve as novel high-temperature heat transfer and storage media to be applied and popularized in the field of high-temperature energy.

The invention discloses a flame retardant low foaming polypropylene material and a preparation method thereof. The material comprises, by mass, 10 to 90% of polypropylene, 5 to 30% of a thermally decomposing inorganic substance, 3 to 40% of a halogen-free fire retardant, 1 to 20% of a thermoplastic elastomer, 0.1 to 1% of an anti-oxidant, 0.1 to 3% of a lubricant and 0 to 5% of a functional auxiliary agent. According to the invention, the inorganic substance with low thermal decomposition temperature is added into a polypropylene resin as a foaming agent, and water vapor generated in the decomposition of the inorganic substance is utilized for formation of bubbles; the halogen-free fire retardant is added at the same time, which enables the polypropylene resin to have a certain degree of flame resistance, thereby enlarging the utilization scope of the polypropylene resin; a pre-foaming polypropylene material is obtained through blending fusion extrusion and granulation of an obtained mixture with an extruder, and then a variety of foaming products are produced by utilizing molding equipment like injection molding or mould pressing equipment.

The invention discloses a water conservancy construction pipe burying cable unwinding device, and relates to the technical field of water conservancy engineering. The water conservancy construction pipe burying cable unwinding device comprises an installation base plate, a connecting mechanism, a cable reel and a guide mechanism. The connecting mechanism is fixedly arranged on the top of the installation base plate, the cable reel is movably arranged on the top of the installation base plate, and the guide mechanism is fixedly arranged on the top of the installation base plate. A motor box isfixedly arranged on the top of the installation base plate through a supporting frame, and a motor is fixedly arranged inside the motor box. Due to the fact that the installation base plate and the connecting mechanism are arranged, the motor is started and drives a second connecting rod to rotate, the second connecting rod can drive a connecting block and the cable reel to rotate through a connecting cylinder to begin to unwind a cable, the unwinding speed of a cable body can be controlled by controlling the rotating speed of the motor, and the problems that a conventional cable unwinding device inconveniently controls the cable output speed of the cable, the looseness phenomenon is prone to happen if the cable unwinding speed is excessively high, and the cable is accumulated and knottedare solved.

The invention discloses a permeable epoxy polyester mixed powder coating, belonging to the field of powder coating technique of static coating. According to the weight percentage of the compounding, the coating consists of 25-18 percent of epoxy resin, 25-42 percent of indoor polyester resin, 0.8-5 percent of leveling agent, 1-20 percent of pigment, degasifying agent, and the rest of filling materials and other normal auxiliary agents; the preparation method is carried out by the production process of the existing powder coating. The coating is characterized in that the degassifying agent is one of polyethylene wax APP230F, 230VF, 230XF, 620F, 620VF and 620XF and occupies the weight percentage of 0.1-0.8 percent compared with the total weight. The permeable epoxy powder coating has the advantages of outstanding degassifying effect, being widely used for the powder coating disposal of devices such as castings, flat and smooth surface of the coating, good construction performance and excellent internal quality.

The invention discloses a piston-cylinder-fixed type air pressure multi-disc friction clutch. The air pressure multi-disc friction clutch is connected between a first transmission device and a second transmission device and comprises a front-segment structure, a rear-segment structure and a connecting shaft, the connecting shaft penetrates through the front-segment structure and the rear-segment structure, and the front-segment structure comprises a piston cylinder, a piston, a pressure disc and a return spring; the rear-segment structure comprises an inner friction disc base, multiple inner friction discs, multiple outer friction discs and an outer friction disc connecting sleeve; the piston cylinder is installed on the first transmission device, the piston cylinder, the piston, the pressure disc, the return spring, the inner friction disc base and the outer friction disc connecting sleeve are sequentially connected in a matched mode, the multiple inner friction discs and the multiple outer friction discs are alternately arranged, and the second transmission device is fixedly connected on the outer friction disc connecting sleeve. The air pressure multi-disc friction clutch is compact in structure, good in protection and heat dissipation performance and convenient to maintain.