98results about How to "Good fire performance" patented technology

The invention relates to an expansion flame retardant organosilicon sealant and a manufacturing method thereof. The sealant comprises the following components by weight portion: 100 portions of Alpha, Omega-dihydroxyl polysiloxane; 5 to 30 portions of plasticizer; 20 to 100 portions of filler; 50 to 150 portions of inorganic flame retardant; 5 to 30 portions of expansion fire retardant; 1 to 30 portions of cross-linking agent; 0.1 to 1 portion of catalyzer; 1 to 5 portions of viscosity increaser and 0.1 to 5 portions of inorganic pigment. The manufacturing method comprises the following steps: the Alpha, Omega-dihydroxyl polysiloxane, the filler, the inorganic flame retardant and the expansion fire retardant are dehydrated at 80 to 150 DEG C in a vacuum triple motion agitator, and are mixed for 0.5 to 2 hours before the mixture is cooled to the room temperature; the silane cross-linking agent, the viscosity increaser, the catalyzer and the plasticizer are added and mixed for 0.5 to 2 hours. The expansion flame retardant organosilicon sealant has excellent mechanical property, fire retardancy, adhesion and storage stability, which is primarily used as a sealant in devices that cables are threaded through on watercrafts as well as used for closing off various openings formed in the way that cables, air conduits, oil tubes and so on pass through walls, bulkheads, floor slabs, decks and so on in buildings or power supply systems.

The invention belongs to the field of building materials and particularly relates to a method for paving a pavement paving layerfor a tunnel road surface. The method is characterized by comprising thefollowing steps: firstly, preparing flame retardant high-viscosity modified asphalt which is prepared from styrene-butadiene-styrene block copolymer, tackifier, compatibilizer, stabilizer, flame retardant and smoke suppressant and base asphalt; secondly, cleaning the surface of a concrete layer 1 of the tunnel surface; thirdly, paving and spreading a bottom surface adhesive layer, i.e. spreadingand paving modified emulsion asphalt on the concrete layer 1 of the cleaned tunnel surface by utilizing an asphalt spreading and paving vehicle to obtain a bottom surface bonding layer 2, wherein thespreading and paving quantity of the modified emulsion asphalt is 0.8-1.0kg / m<2>; fourthly, paving a mid-surface layer which can highly resist rutting; fifthly, paving a waterproof and oilproof bonding layer; and sixthly, paving a fireproof, noise reducing and anti-slip top surface layer. The combination paving layer obtained from the method has the characteristics of excellent pavement performance, fireproofness, slip resistance and noise reduction.

The invention discloses artificial fireproof PVC leather for a cushion furniture, wherein the artificial fireproof PVC leather is prepared by compositing a surface rubber layer containing a fireproof additive and a cloth base subjected to fireproof processing. A sofa assembled by the artificial fireproof PVC leather and a fireproof core material is tested according to combustibility test standards of interior decoration material seats in BS5852 in the United Kingdom, and results show that the sofa accords with requirements of the standards. The invention also discloses a preparation method ofthe artificial fireproof PVC leather. The artificial fireproof PVC leather provided in the invention can be directly coated on the inner buffer material, so the cushion furniture has an excellent long-term fireproof performance, the structure of the cushion furniture is simplified, the flexibility and the elasticity required by the fireproof cushion furniture are not influenced, and a process flow for producing the fireproof cushion furniture is similar to a process flow for producing a common cushion furniture, thereby the production cost is reduced, the large scale production can be easily formed, and the popularization and the application are easy.

The invention relates to heat-insulation mortar and a preparation method therefor and particularly relates to the heat-insulation mortar, which has a network micropore structure and has excellent properties, prepared through forming an aqueous-phase uniform three-dimensional-network micropore structure by taking ettringite colloid as a template agent and adding a cementing material, fine and lightweight aggregates, additives and admixtures. The heat-insulation mortar disclosed by the invention has the characteristics of light weight, high strength and low coefficient of thermal conductivity, so that the performance indexes of the existing heat-insulation mortar can be effectively improved.

The invention relates to a material for building a movable house, in particular to a magnesium light synthesis flame retardant floor plate and a process for preparing the same, wherein magnesia, magnesium chloride, gypsum powder, saw dust, phosphoric acid, oxalic acid, tri-sodium, triethanolamine, resin glue and water are mixed according to the weight ratio of 20Kg:15Kg:4Kg:10Kg:2Kg:0.3Kg:0.2Kg:0.4Kg:0.1Kg:1.5Kg:15Kg, and made to be the magnesium light synthesis flame retardant floor plate with the specification of 1530mmx75mmx38mm by taking two bamboo bars as ribs. The invention has the advantages of reducing the consumption of timber source and eliminating the risk of fire accident, along with little noise, cleanness and sanitation.

The invention belongs to the technical field of fireproof paint and particularly relates to steel structure fireproof paint. The steel structure fireproof paint is mainly composed of, by weight, 40-60% of compound binder resin, 15-20% of fire retardants, 1-3% of cuprous oxide, 0.5-3% of vermiculite, 2-5% of aluminum polyphosphate, 1-3% of zinc oxide, 0.5-1% of a flatting agent, 15-20% of acetone, 1-5% of 1,2-benzisothiazolin-3-one and 1-5% of butyl p-hydroxybenzoate. The steel structure fireproof paint has prominent fireproof performance and good anticorrosion and mildew-resistant performance as well.

The invention discloses a sponge city ecological water-permeable pavior brick. The sponge city ecological water-permeable pavior brick comprises a sand foundation surface layer and a cement concrete structural layer. The sand foundation surface layer comprises, by weight, 50 to 100 parts of coated sand, 8 to 12 parts of polyether sulfone resin, 2 to 4 parts of glass fiber, 20 to 30 parts of epoxy resin, and 5 to 10 parts of alkali lignin. The cement concrete structural layer comprises, by weight, 60 to 80 parts of cement, 50 to 75 parts of fly ash, 80 to 100 parts of quartz sand, 20 to 40 parts of pitchstone powder, 1 to 6 parts of yellow dextrin, 5 to 10 parts of polypropylene fiber, 1 to 4 parts of a water reducing agent, and 40 to 50 parts of water. The invention also discloses a preparation method of the sponge city ecological water-permeable pavior brick. The sponge city ecological water-permeable pavior brick possesses excellent water permeability, wear resistance, and slip resistance, high flexural and compressive strength, and high temperature resistance, and is low in preparation cost.

The invention discloses an improved fire-proof bus duct which comprises a duct body formed by an upper cover plate, a lower cover plate and two lateral plates. Two ends of the upper cover plate are bent inwards and downwards to form lower flanges, two ends of the lower cover plate are bent inwards and upwards to form upper flanges, and the two lateral plates are bent outwards to form transverse plates. The transverse plates of the two lateral plates, the upper cover plate and the lower cover plate are locked through fastening pieces, an insulator fills the duct body, and an insulation support is arranged in the duct body. The insulation support comprises an upper insulation support, a lower insulation support and a bus fixed between the upper insulation support and the lower insulation support. Radiating structures are arranged on the two lateral plates, and a drainage channel is arranged on the lower cover plate at a position close to the inner sides of the upper flanges. The improved fire-proof bus duct has the advantage that radiating inclined holes are arranged on the two lateral plates and are different from common radiating gaps, the upper cover plate and the lower cover plate are bent to form certain angles so prevent rain water from entering the radiating inclined holes, the insulation support is arranged in the duct body, an insulation effect is good, and fire-proof performance is good.

The invention discloses a light sound insulation magnesium oxysulfate fireproof material and a preparation method of a wall plate, and mainly relates to the field of building materials. The light sound insulation magnesium oxysulfate fireproof material comprises the following components in parts by weight: 150 parts of magnesium oxide, 100-200 parts of a magnesium sulfate solution, 1-2 parts of amagnesium oxysulfate modifier, 0.1-0.5 part of polypropylene fiber, 10-50 parts of a fireproof adsorption material, 3-12 parts of polystyrene particles, 20-80 parts of a foaming inorganic material, 10-50 parts of an active filler and 5-50 parts of foaming agent foam. The light sound insulation magnesium oxysulfate fireproof material can effectively reduce the density of the wall plate on the basisof the fireproof and flame-retardant function of magnesium oxysulfate cement to achieve the light effect, can generate a porous structure and has sound absorption and sound insulation effects. The added inorganic material can prevent fire and flame.

The invention discloses a preparation method of a vacuum heat insulating plate. The preparation method comprises the following steps of: (1) placing main materials containing over 98% of silica content, a radiation separating agent and reinforced fibers which are weighted based on ratio into agitating equipment for agitating to obtain a mixture material; (2) transmitting the mixture material into a die; (3) pressing the mixture material in the die at 0.4 to 2MPa to form a core material; (4) parching the core material for 10 to 120 minutes at 100 to 300 DEG C; (5) arranging the core material prepared in step (4) into a ventilate and powder-out-of-permeating material for wrapping without seam, and placing the wrapped core material into a bag made of a high carrier material so as to obtain the product; and (6) processing the product in step (5) by pumping vacuum and sealing the port. The preparation method has the advantage that the prepared product has high fire resistance, low thermal conductivity coefficient, long service life, low cost, and simplicity in preparation technology.

The invention provides a high-sound-insulation fireproof door. The high-sound-insulation fireproof door comprises a door frame (1) and a door leaf (2), wherein one side of the door leaf is hinged to the door frame (1). The door leaf (2) further comprises an outer panel (21) and an inner panel (22). Two punching acoustical boards (28) are further arranged between the outer panel (21) and the inner panel (22). Heat insulating and sound insulating core materials (23) are filled into an interlayer between each punching acoustical board (28) and the outer panel (21) or the inner panel (22). An air-filled cavity (29) is formed between the two punching acoustical boards (28). Due to the fact that the air-filled cavity composed of the two punching acoustical boards is formed in the door leaf of the high-sound-insulation fireproof door, the sound insulating effect is good, the heat preserving, airtight and fireproof functions are further possessed, an edge covering structure does not need to be arranged, the structure and the process are simple, and the appearance is attractive and high-grade.

The invention belongs to the technical field of building materials, and particularly relates to an inorganic-organic composite fireproof thermal-insulation board and a preparation method thereof. The thermal-insulation board is prepared from the following raw materials in parts by weight: 200-1000 parts of magnesium chloride, 200-1000 parts of magnesium oxide, 100-500 parts of diatomite, 50-100 parts of polystyrene, 1-10 parts of setting accelerator, 1-10 parts of foaming agent and 1-10 parts of halogenide-resistant modifier. The preparation method comprises the following steps: uniformly stirring the magnesium chloride and setting accelerator; adding the foaming agent, and stirring to form a foamed solution; adding the magnesium oxide and modified diatomite, stirring uniformly, adding the halogenide-resistant modifier and polystyrene particle, and continuously stirring; curing in a mold; and demolding to form. The inorganic-organic composite fireproof thermal-insulation board develops the diatomite resource which is most suitable to be used as the thermal-insulation building material; the diatomite with unique diatomite structure, which has the advantages of small volume weight, low density, favorable binding force with the material substrate and the like, can ensure the thermal-insulation property of the board and enhance the fireproof property and flame retardancy of the board when being used as the aggregate of the fireproof thermal-insulation board, thereby solving the contradiction between the fireproof property and thermal insulation in the existing thermal-insulation board.

The invention relates to an internal steel plate-concrete composite shear wall with end part externally-wrapping structures, and a cross beam structure. The internal steel plate-concrete composite shear wall with the end part externally-wrapping structures comprises a concrete wall body and a steel bar frame structure internally arranged in an inner cavity of the concrete wall body, and is characterized in section steel externally-wrapping structures at the two ends of the concrete wall body, each section steel externally-wrapping structure is composed of section steel and cross anchor rods, and the section steel wraps the outer end surfaces of the end parts of the concrete wall body and is fixedly connected with the concrete wall body and the steel bar frame structure through the cross anchor rods; the steel bar frame structure is a rigid frame structure composed of the internal steel plate, vertically distributed bars and horizontally distributed bars, the two ends of each horizontally distributed bar are fixedly connected with the two ends of the internal steel plate through studs respectively, and the vertically distributed bars and the horizontally distributed bars are in binding connection to form the rigid frame structure; and the two ends of the internal steel plate contact with a web plate of the section steel, and the two flanges of the section steel are fixed on the concrete wall body and the steel bar frame structure through the cross anchor rods to form each end part externally-wrapping structure. The internal steel plate-concrete composite shear wall with the end part externally-wrapping structures, which is disclosed by the invention, has the beneficial effects of being good in fireproof performance, good in steel plate buckling-restrained performance, low in cost, and high in ductility level.

The invention discloses a method for preparing a glass steel phenolic resin substrate, which comprises the following steps of: 1, putting phenol, aldehyde and alkali into a reaction kettle in a molar ratio of 1.0:(1.5-3.0):(0.001-0.1) and performing polycondensation reaction; 2, adding a pH value regulator into a product in the step 1 to regulate the pH value to 3 to 9, and distilling under reduced pressure until the viscosity of the product is between 1,000 and 3,000 centipoises at 25 DEG C; and 3, adding acidic components into the product in the step 2, and stirring uniformly, wherein a weight percent ratio of the acidic components to the product is (70-99.5):(0.5-30). The phenolic resin substrate prepared by the method is mainly used for manually-molded glass steel, and can be solidified at normal temperature, so energy is saved to a great degree, labor intensity is reduced, and the aims of energy conservation and consumption reduction are fulfilled.

The invention discloses a fire retardant coating, which is characterized by comprising the following materials in percentage by mass: 10-20% of cellulose ether, 10% of FEVE fluorocarbon resin, 15% of glass beads, 15-30% of pigment, 5-10% of ammonium polyphosphate, 3-8% of a curing agent, 10-30% of phenol propane epoxy resin, 4-8% of pentaerythritol, 4-8% of expanded graphite and the balance being a solvent. The product disclosed by the invention is flame-retardant or non-inflammable, so that a protected substrate is kept from direct contact with air, thus delaying firing and combustion speed of an object; and besides the performance of being flame-retardant or non-inflammable, the fire retardant coating additionally has a relatively low heat conductivity coefficient, and can delay transmission of flame temperature to the protected substrate.

The invention relates to a high-performance foamed-concrete cement material and a preparing method thereof. The high-performance foamed-concrete cement material is prepared from, by weight, 20-40 parts of mineral admixtures, 35-65 parts of cement, 2-4 parts of retarder, 6-12 parts of foaming agent, 1-3 parts of bubble wall reinforcing agent, 1-3 parts of foaming speed adjusting agent, 5-10 parts of magnesium hydrate, 5-10 parts of aluminium hydroxide and 5-15 parts of building mortar admixtures. The preparing method includes the step that the components are mixed to be even. Compared with the prior art, the concrete cement material is resistant to corrosion, high in strength, good in sound insulation and thermal insulation, excellent in fireproof performance and stable in performance, and is used at the high temperature, the service life is longer, the applications are extremely wide, mineral admixtures such as industrial waste residue fly ash can be used, the cement content is reduced, high pressure maintenance can not be used, and the more cost is saved; the preparing method is easy to operate, the investment cost is low, comprehensive utilization of resources is fully achieved, the cleaner production and environmentally friendly requirements are met, and the high-performance foamed-concrete cement material is quite suitable for large scale production.

The invention discloses a paralithic flowerpot and a making method of the flowerpot. The materials of the flowerpot are as follows: magnesium chloride solution, magnesia, iron oxide red, iron oxide black, iron oxide yellow, lauxite, silica sol and wooden meal. The magnesium chloride solution is added into other materials to prepare castables, and then a soft mode coat is prepared with the iron oxide red, the iron oxide black and the iron oxide yellow, with a die body of a natural block, a rubber soft mode is made and then a hard mould is made according to the rubber soft mode. A soft mode coat is coated on the inner face of the rubber soft mode and the castables are poured into the rubber soft mode. After the castables are solidified, the hard mould is removed, the rubber soft mode is stripped off and then the solidified castables are deburred, polished and is sprayed with varnish to increase the surface luster. Adopting the magnesium chloride and the magnesia as the main materials and adding the iron oxide red, the iron oxide black and the iron oxide yellowtohange the granolithic color of the flowerpot and adding the lauxite and the silica sol, the invention not only reduces the water absorbing capacity of the product, but also greatly enhance the compactness of the product; the wooden meal can serving as fibers, which reduces the weight of products.

The invention provides a nanometer fireproof antibacterial environment-friendly coating and a preparation method thereof. The preparation method comprises a step (1) of evenly dispersing light calcium carbonate, talcum powder, titanium dioxide, ethylene glycol and softened water at a high speed, controlling the dispersion speed to be 1000-1500 turns / min, and controlling the dispersion time to be 30-60 min; a step (2) of grinding the aforementioned slurry through a grinder to fineness of 34-45 microns; a step (3) of adding texanol, acrylic emulsion, dodecyl trimethyl ammonium chloride, ethoxylated octyl phenol, cacumen biotae ethanol extract, christina loosestrife herb ethanol extract and hydroxypropyl methylcellulose, and performing stirring for 40-60 min; a step (4) of adding ammonium polyphosphate, melamine, pentaerythritol, ODOPB and nano graphene oxide, and performing ultrasonic shearing for 60-100 min. According to the coating, an environment-friendly formula is adopted, and the coating has very good fire resistance, bacterium resistance and mold resistance.

The invention provides a foam concrete composite board for a fireproof isolation belt. The foam concrete composite board is composed of two foam concrete panels and a polyurethane foam sandwich, wherein sections of the two foam concrete panels are L-shaped; the two L-shaped foam concrete panels can be closed to form a mold cavity provided with a closed end, and polyurethane foam can be poured into the mold cavity to form the foam concrete composite board for the fireproof isolation belt; and the foam concrete panels are made of one of a pulverized fuel ash foam concrete sheet material, a slag foam concrete sheet material, a polystyrene granule light-weight foam concrete sheet material, an expanded perlite foam concrete sheet material and s fiber-reinforced foam concrete sheet material. The composite insulation board has the advantages of excellent fireproof performance, light weight, thermal insulation, low cost and good durability, can be produced into composite boards of different volume weights, and is applicable to the fireproof isolation belt for an external wall of a building.

The invention discloses an environment-friendly diatom mud decoration material and a preparation method thereof. The decoration material is prepared from the following raw materials in parts by weight: 60-80 parts of diatomite, 70-90 parts of quartz sand, 15-30 parts of sepiolite, 20-30 parts of talcum powder, 8-20 parts of calcium hydroxide powder, 5-10 parts of bamboo carbon fibers, 1-5 parts of polyester fibers, 0.6-2 parts of sodium perborate, 1-3 parts of nano-zinc oxide, 0.2-0.6 part of Kathon, 0.1-0.5 part of a dispersing agent, 0.2-0.8 part of a wetting agent and 0.1-0.3 part of a defoaming agent. The preparation method of the decoration material comprises the processes of purifying diatomite, mixing and carrying out ball milling. The environment-friendly diatom mud decoration material provided by the invention is safe and environment-friendly, has relatively good bacteria resistance, bacteriostasis, water resistance, mildew resistance and fire resistance and is suitable for being used as an internal wall coating, and the preparation method is simple.

The invention provides a fireproof door core plate and a preparation method thereof. The fireproof door core plate is prepared from the following components in parts by weight: 30-56 parts of gypsum, 20-50 parts of magnesium oxide, 20-40 parts of magnesium chloride, 20-40 parts of magnesium sulfide, 1-5 parts of ultrafine carbon fibers, 2-6 parts of ultrafine silica fume, 3-8 parts of short-staples, 1-2 parts of industrial boric acid, 1-2 parts of ferrous sulfate, 3-5 parts of a foaming agent, 3-8 parts of organic silicon waterproof powder, 2-6 parts of humic acid and 35-45 parts of water. The fireproof door core plate is environment-friendly, light in weight, high in strength and good in fireproof performance, can fulfill the requirement for fireproof flammability and safety of products, and can be used for remarkably improving the compression resistance, fracture resistance, seepage resistance, impact resistance and abrasion resistance. The fireproof door core plate is wide in raw material source, and is low in production cost and simple in processing process.

A fire-proofing agent for natural and artificial fibrous materials is prepared from triethanolamine, boric acid, arnmonium sulfate, magnesium sulfate, borax and water through proportionally compounding. Its advantages are broad spectrum, high adhesion, not colouring the fibrous material and not rusting metallic material easily.

The invention provides an internal mold fixing and external mold assembling type disassembly-free composite formwork and a mounting method, and belongs to the field of building materials. The composite formwork comprises an inner formwork, a heat preservation layer, a fireproof layer, a panel layer, an outer decorative surface decorative layer, secondary keels, main keels and diagonal braces; theheat preservation layer, the fireproof layer, the panel layer and the outer surface decorative layer are compounded; embedded screws are arranged in the heat preservation layer; the embedded screws are sequentially connected with the inner formwork, the secondary keels and the main keels through connecting pieces and bolt assemblies; the secondary keels are perpendicular to the main keels; the bolt assemblies are connected with the diagonal braces; and the diagonal braces are fixed to the base. The mounting method comprises the following steps: S1, the inner formwork is fixed through the secondary keels, the main keels and the diagonal braces; S2, the heat preservation layer, the fireproof layer, the panel layer and the outer surface decorative layer are assembled into an outer formwork; S3, the outer formwork is fixed to the inner formwork through the connecting pieces; and S4, steel bars are arranged between the inner formwork and the outer formwork, and concrete is poured. Comparedwith the prior art, modular production is adopted, all parts are in factory operation, the site construction efficiency is improved, the construction period is shortened, the labor cost is reduced, environmental pollution caused by site construction is reduced, and firmness and safety are higher.

The invention provides a luxurious fireproof anti-explosion door which comprises a door leaf, decorative face plates and a door frame sleeve. The luxurious fireproof anti-explosion door is characterized in that square tubes wrap the outsides of four edges of the door leaf and are filled with thick carbon fiber plates, high-strength PE (polyethylene) non-woven sewing layers and unidirectional cloth, the double surfaces of the door leaf are sealed by metal plates and flame-retardant multilayer plates, the decorative face plates are adhered on the outer sides of the metal plates, the door frame sleeve wraps the outside of the upper end and the outside of the lower end of the door leaf, and the outer sides of the square tubes on the left side and the right side of the door leaf are sealed by flame-retardant solid-wood strips. The luxurious fireproof anti-explosion door has the advantages that the fireproof anti-explosion door which is made of unique steel, wood and carbon fiber structures is excellent in fireproof performance, is extremely firm and can be shaped according to user's will, accordingly, the problem of single styles of existing antitheft doors can be solved, and the luxurious fireproof anti-explosion door is an optimal option for banks, financial departments and national security departments.

The invention discloses a lightweight soundproof thermal insulation wall brick. The wall brick is prepared from, by weight, 170-190 parts of silica sand, 80-90 parts of cement, 35-45 parts of lime, 17-24 parts of ardealite, 25-35 parts of coal ash, 0.3-0.5 part of aluminum powder, mica powder and 320-360 parts of water, wherein the mica powder accounts for 7-9% of the total dry weight. Compared with an organic foaming method, an inorganic foaming method has advantages of high corrosion resistance, fireproof performance and environment friendliness. The wall brick prepared from the raw materials according to the method is about 0.34g / cm<3> in bulk density, 1.6Mpa in compressive strength, 0.07W / m.K in thermal conductivity and 40db in soundproof effect.

The invention relates to a preparation method of an insulating brick containing plant straws. The preparation method is characterized in that the insulating brick is produced from the raw materials in parts by weight: 70-80 parts of the plant straws, 13-25 parts of magnesium hydroxide and 5-10 parts of isocyanate and comprises the steps: crushing the plant straws to obtain crushed plant straws with the fiber length of 5-10mm, drying the crushed plant straws until the moisture content is 8 percent according to the weight percentage, weighing the plant straws according to the parts by weight, adding the magnesium hydroxide and the isocyanate as a binder according to the parts by weight, carrying out mixing and burdening, then carrying out prepressing with the precompression of 500 tons, then carrying out compression molding with the die pressure of 1.2 kilotons, heating to 110 DEG C by virtue of a high-frequency electromagnetic induction method, and carrying out hot pressing for 3-6 minutes to form the insulating brick. According to the production method disclosed by the invention, with the plant straws as main raw materials, the produced insulating brick has a good fireproof performance without needing secondary insulation; in addition, the insulating brick is rapid in construction, has a favorable anti-seismic effect and has the shock strength according with the stipulations of a national standard in wall materials.

The invention discloses a fireproof high-temperature-resistant power cable with excellent fireproof performance. The center of the fireproof high-temperature-resistant power cable is provided with an alloy copper conductor, a silicon carbide insulation layer is extruded outside the alloy copper conductor, and an inner jacket and an outer jacket are sequentially arranged outside the silicon carbide insulation layer. The inner jacket is a welding copper pipe, and the outer jacket is co-extruded by a PP (Propene Polymer) copolymer.

The invention relates to a marine oil-resistant and paint-aging-resistant independent shielding power cable and a manufacturing method thereof. Power cable cores are sequentially extruded and wrapped on the periphery of a twisted copper conductor, wherein each power cable core is formed by an insulation layer, a wrapping shielding inner wrapping belt, a cladding independent shielding layer and a wrapping shielding outer wrapping belt; after gaps among a plurality of power cable cores are filled with flame-retardant polypropylene fiber for core filling, the whole is intertwisted to form the power cable core; a high-heat-resistance coefficient flame retardant fire-resistant longitudinal wrapping belt is sequentially wrapped on the periphery of the cable core, then, a armored braiding layer is cladded, talcum powder is coated, and an oil-resistant and paint-aging-resistant outer sheath is extruded and wrapped. The outer sheath is prepared from the following ingredients in parts by weight: 15 parts of PVC-SG2, 5 parts of LEVAPREN 500HV rubber, 4 to 7 parts of polypropylene adipate, 2 to 3 parts of epoxidized soybean oil, 0.6 to 1 part of lead sulfate tribasic, 1 to 1.5 parts of dibasic lead phthalate, 0.05 to 0.1 part of diphenol propane, 2 to 4 parts of Elvaloy 742, 1 to 3 parts of antimonous oxide, 0.1 to 0.5 part of chlorinated paraffin 52 and 0.3 to 0.5 part of ferrocene. The cable can achieve the oil-resistant and paint-aging-resistant effects.

The invention discloses a machinery dedicated electric cabinet, which comprises an electric cabinet main body, wherein a display screen is arranged at the top end of the electric cabinet main body; the display screen and the electric cabinet main body are arranged in an embedded manner; an alarming apparatus is arranged at the rear side of the display screen and connected with the display screen in a penetrating manner; an on-off key is arranged at the lower right corner of the display screen and movably connected with the display screen; and a door is arranged at the front side of the electric cabinet main body and movably connected with the electric cabinet main body. A novel technology is adopted by a safety protection device as follows: a crank connected with a sheath firstly clockwiserotates for a set number of turns, and is connected to the alarming apparatus through an inductor to give an alarm when the rotating number of turns exceeds the set number of turns for two or more times or is smaller than the set number of turns, a spiral pipe rotates to the upper part inside a key lock upwards, the spacing distance is induced through the inductor, and no alarm is given when a key is inserted into a key hole after correct treatment and comparison, so that the safety coefficient is increased and the safety of the electric cabinet is improved.

The invention discloses an external heat insulation system for an external wall with a rock wool belt composite heat insulation board. The external heat insulation system comprises a bonding layer, a heat insulation layer, a rendering layer, a facing layer and a fitting, wherein the bonding layer is prepared from the following raw materials in parts by weight: 350 to 400 parts of 42.5-grade cement, 600 to 650 parts of oven-dried river sand, 22 parts of dispersible latex powder, 4 parts of wood fiber, 1 to 3.5 parts of hydroxypropyl methyl cellulose and 0.1 to 3 parts of water reducing agent; the rendering layer is prepared from the following raw materials in parts by weight: 300 to 350 parts of 42.5-grade cement, 650 to 700 parts of oven-dried river sand, 28 parts of dispersible latex powder, 4 parts of wood fiber, 1 to 3.5 parts of hydroxypropyl methyl cellulose, 0.1 to 3 parts of water reducing agent and 3 to 5 parts of polypropylene staple fiber.