140results about How to "Improve light weight" patented technology

High heat resistant elastic composite laminates, sealants, adhesives, and coatings developed from a resin blend. The resin blend is made up of methyl and optionally phenyl silsequioxane resins selected to produce silanol-silanol condensation silicone polymers formed in a slowly evolving reaction mass containing submicron boron nitride, silica and boron oxide fillers. The required ratio of submicron boron nitride to silica has been discovered for assuring the formation of a high temperature resistant elastic composite blend that will form intermediate flexible ceramic products up to 600 deg C., then continue to form preceramic then dense ceramic products from 600 to 1000 deg C. The thermal yield of the composite is generally greater than 90 wt. % at 1000 deg C. Composite products with different levels of heat transformation can be fabricated within the same product depending upon the thickness of the layers of reinforcement.

The invention provides a ceramic material with a multi-stage duct structure and a manufacture method thereof. The ceramic material is characterized by being provided with a plurality of macropores with millimeter grade, tens of middle pores with millimeter grade exist on the walls of the macropores, micropores with sizes less than microns exist on the walls of the middle pores. The ceramic material is manufactured by using 10-50 percent by mass of waste and 20-60 percent by mass of natural porous mineral and matching with 10-30 percent by mass of clay through the steps of adding water for mixing, forming, drying, preheating and sintering at a temperature of 1000-1200 DEG C, wherein the waste can be expanded at high temperature or has large ignition lost and easy decomposition and volatilization. The ceramic material has excellent water-absorbing and water-retaining properties, better water permeability, excellent absorption and filtration and light weight, and can be used as a water-absorbing material, a water-retaining material, a water permeating material, a sound insulating material, a heat insulating material, an indoor deodorizing material, an absorbing material, a filtering material and the like to be widely applied to various fields.

The invention provides an improved facing (1) for a gypsum wallboard (22) that has a single layer (2) of nonwoven substrate (3) having about 40-80% of glass staple fibers (4) and about 50-15% of polymeric fibers (5), and wherein the ratio of the diameters of the glass fibers (4) and the polymeric fibers (5) is between about 1.5-3:1. A hydrophilic binders is disposed in the substrate (3) in the form of a porous film (10) that extents throughout the substrate (3) so as to provide the substrate, having only the binder therein, with a porosity of between about 150-450 cfm / sq. ft. A hydrophobic, polymeric coating (6) is applied to an upper front face (7) of the substrate (3), wherein 90% of the coating (6) lies within a distance from the front face (7) of the substrate (3) that is no more than 50% of the thickness (T) of the substrate (3).

The present invention relates to an automotive headliner, and more particularly to a multilayer automotive headliner, which is manufactured by blending at least one thermoplastic fiber, a sheath-core bicomponent fiber composed of a core component and a sheath component having a melting point and properties different from those of the core component, and at least one functional thermoplastic organic fiber and natural fiber with each other at various blending ratios, and forming the fiber blends into a multilayer structure. The inventive automotive headliner is a thermoplastic organic fiber-reinforced composite material reinforced with functional thermoplastic organic fiber or natural fiber at a suitable ratio and having a two-layer, three-layer or five-layer molded structure, and thus has effects of excellent sound absorption, thermal insulation, impact resistance, moldability and durability. Also, it is a multilayer lightweight automotive headliner which is eco-friendly and recyclable because it contains pure thermoplastic organic fiber and natural fiber without using thermosetting adhesives, polyurethane foams and inorganic reinforcing fibers, such as glass fiber, carbon fiber and boron fiber, as used in the prior automotive headliner.

The invention provides a preparation method of a steel structure fireproof paint by taking expanded and vitrified small ball as a base material, which is characterized in that on the basis of a traditional organic inorganic clad steel structure fireproof paint, and expanded and vitrified small ball and phenolic resin are used for obtaining the steel structure fireproof paint with excellent performance. According to the invention, expanded and vitrified small ball in the inorganic component replace a traditional lightweight aggregate, thereby the paint has the advantages of low density, high strength, stable physical and chemical performance, and has excellent performances of aging resistance and weatherability, heat insulation, fire resistance, sound insulation and insulation; phenolic resins can replace a traditional film forming agent in the organic component, no fire retardant is applied, so that the coating has the advantages of difficult combustion, good heat stability, low smoke, low toxicity, high mechanical strength, and strong anti-corrosion capability and weather resistance. The paint overcomes the disadvantages of poor flame resistance and toxic flue gas release due to thermal decomposition of the common organic resin.

The invention relates to a steel tube-concrete composite structure which comprises steel tubes. The structure is characterized in that the steel tubes are internally or / and externally provided with self-compacting concrete, and the self-compacting concrete and the steel tubes are consolidated and hardened into a whole, thus the traditional structure that the steel tubes are internally filled with the concrete can be combined, and the steel tube-concrete structure that the steel tubes are internally or / and externally covered with a layer of concrete can also be manufactured. The structure has the characteristics of high bearing capacity, good ductility, excellent shock resistance, convenient construction, great reduction of the construction period, benefit to the fire resistance and the fireproofing of the steel tubes, corrosion resistance superior to that of a steel structure, and the like, has obvious environmental benefits, economic benefits and social benefits, can give perfect play to the advantages of high bearing capacity, large rigidity, light weight, good plasticity and toughness, shock resistance, high fatigue resistance, good shock resistance, and the like of the steel tube concrete and is suitable for various tube, pile and column structures, and particularly for various deformed tube, pile and column structures and the structures having high requirement on the bearing capacity.

The invention discloses a concrete shear wall characterized by being internally provided with at lease one module, self-compacting concrete is cast outside the module, and the thickness of the self-compacting concrete at two sides of the module is not more than 45 mm, therefore, a structure with complicated shape, thin wall and dense reinforcement is cast and formed, abrasion to a template, caused by vibration, can be avoided, and abrasion to a mixer by concrete can be reduced. Concrete can be used to the largest degree by arranging the module internally, thereby saving cost; moreover, excellent heat preservation, sound insulation and heat insulation effect can also be achieved by arranging the module in the wall; in addition, shock resistance of the wall can be enhanced greatly by forming non-continuous joint seams in the wall; by casting a thin layer of steel screens at two sides of the module, compact casting and high strength can also be achieved, a large amount of concrete can be saved, and especially compression strength, density, tensile strength, breaking strength, modulus of elasticity and other indexes are effectively improved. The concrete shear wall is applicable to wall structures of various high-rise buildings, medium-height buildings and even skyscrapers.

The invention provides a device and method for recovering the inertial energy of automobile wheels, belonging to the fields of automobile energy saving and emission reduction and new energy electric vehicles. The invention adds a fixed internal gear insert on the inner ring of the automobile wheel hub. When the automobile wheel rotates, the power increases through the internal gear transmission mechanism and directly drives the permanent magnet synchronous generator to generate electricity, which is generated by the brake pedal sensor and the tire speed sensor. The signal controls the opening and closing of the electromagnetic clutch, which directly drives the permanent magnet synchronous generator to generate electricity. At the moment of braking and deceleration of the car, it can quickly release and recover the inertial energy of the car wheels in large quantities, and provide power to the battery or the power network of the whole vehicle. The device has the advantages of simple structure, small volume, high energy recovery rate, good reliability, low manufacturing cost, and certain technical and economic feasibility.

The invention discloses a high-strength and high-toughness composite material, the raw material of which comprises the following components: polyvinyl chloride, polyurethane elastomer, chlorinated polyethylene, EPDM rubber, silicone-acrylate copolymer, α-methyl Styrene Acrylonitrile, Tetraacicular Zinc Oxide Whiskers, Plant Fiber, Basalt Fiber, Nano Calcium Carbonate, Diatomaceous Earth, Organically Modified Montmorillonite, Zinc Hydroxide Stannate, Calcium Stearate, Zinc Stearate , molybdenum trioxide, acetyl tributyl citrate, soybean oil, polyepichlorohydrin, coupling agent, dioctyl sebacate, oxidized polyethylene wax, hydroxypropyl methylcellulose, triethanolamine. The high-strength and high-toughness composite material of the invention has high strength, good toughness, good heat resistance and strong aging resistance.

The invention relates to the field of helmet materials, in particular to a fiber-reinforced motorcycle helmet composite plastic and a preparation method. Jute fibers are loosened through steam explosion treatment, the loosened jute fibers are provided with good micropores, a foaming agent is arranged in the micropores of the jute fibers, then the jute fibers are coated with thermosetting epoxy resin, during heat treatment of a two-stage fluidized bed, gas is generated by the internally-arranged foaming agent, the micropores are reserved, meanwhile, the epoxy resin is heated and cured to form firm coating coated fibers, and the obtained fibers are the loosened jute fibers with the micropores; and after the jute fibers are coated with the thermosetting resin, compatibility and dispersion ina fiber polycarbonate / ABS system are facilitated, the loosened jute fibers are protected by the thermosetting resin, the micropores of the jute fibers cannot be blocked during later pelletizing, and the good micropores of the obtained composite plastic are reserved in a finished helmet outer shell. The helmet outer shell has excellent low-weight and buffering characteristics while the strength ofthe helmet outer shell is achieved.

The invention relates to a special shape column. The shape of the cross section of the special shape column is a '-' shape, a T shape, a U shape, an L shape, a crossed shape, a square shape, an oval shape or a circular shape. The invention is characterized in that the special shape column comprises reinforced concrete and steel ribs, wherein the steel ribs are positioned in the reinforced concrete, and the reinforced concrete is in a structure with combined self compact concrete and reinforced steel bars. Thereby, the structure of the special shape column can effectively reduce the unnecessary structure protrusion in the building structure, the condition of the surface formed by the self compact concrete is good, the casting and filling compactness can be easily realized, the gripping force of the reinforced steel bars can be effectively improved, the column structure with higher intensity can be obtained, and the invention can be perfectly applied to structures with high and strong carrying force and high or ultrahigh structures, has obvious environmental benefits, economic benefits and social benefits, can particularly and effectively reinforce the indexes such as pressure resistance strength, density, chopping and pulling strength, folding strength, elastic modulus and the like, and is applicable to structures of bridges, garages, retaining walls, protective walls, ordinary buildings, high buildings or ultrahigh buildings and the like.

The invention belongs to the field of building materials and in particular relates to a lightweight, thermal-insulation and high-strength green environment-friendly building board and a preparation method thereof. The environment-friendly building board comprises the following components in parts by weight: 5-10 parts of cement, 3-12 parts of coal gangue, 4-15 parts of coal ash, 2-8 parts of paraffin, 7-13 parts of urea, 4-8 parts of sulfomethylated phenolic resin, 6-14 parts of glass fiber, 8-15 parts of bentonite, 3-9 parts of methyl cellulose, 1-5 parts of mullite, 2-5 parts of medical stone, 2-5 parts of zeolite, 1-6 parts of sulfonylmethyl lignite, 4-15 parts of hydroxyethyl cellulose, and 0.5-1.5 parts of a foaming agent. The environment-friendly building board disclosed by the invention has the advantages of lightweight, excellent thermal-insulation, fire-proof and high-strength performances, which are much higher than the requirements of national and industry standards.

The invention provides an assembly type precast light floor. The assembly type prefabricating light floor comprises a precast concrete layer, connection channel steel, a light material plate, a steel bar truss, an upper chord steel bar, a lower chord steel bar, a slant bending steel bar and a horizontal distribution steel bar. Manufacturing of the steel bar truss and the light material plate is finished firstly in a factory, and the connection channel steel and the horizontal distribution steel bar are welded; when lower part concrete of the precast concrete layer is not yet subjected to curing molding, the light material plate is fixedly placed in the middle of the steel bar truss, then the horizontal distribution steel bar is placed in the middle of the steel bar truss in the total length, the steel bar truss is connected with the upper chord steel bar in a bound mode, and then upper part concrete is poured on the precast concrete layer, so that manufacturing of the assembly type precast light floor is completed; in a construction field, by preburying the connection channel steel in the floor, single floors are connected into one. The assembly type precast light floor fully achieves assemblage, is in accordance with the industrialized development trend of buildings, is completed by pouring in a factory at one time, and has the advantages of being less in wet work amount, convenient to construct, high in crush resistance, high in production efficiency and the like.

The invention relates to a preparation method of a sandwich flexible electromagnetic shielding material based on carbon fiber fabric, nickel nanoparticles and graphene and relates to the preparation method of the electromagnetic shielding materials, aiming to solve problems that a traditional preparation method for 'mixing-molding' existing electromagnetic shielding composites affects the flexibility of the composites and involves some non-environmental protection chemical reagents, and distribution of active components and specific microscopic morphology in construction are difficult to control accurately resulting in that the shielding performance is difficult to improve. The preparation method includes 1, preparation of the carbon fiber fabric; 2), preparation of the nickel nanoparticles / carbon fiber fabric composites by magnetron sputter; 3), plasma enhanced chemical vapor deposition. The preparation method is used for preparation of the electromagnetic shielding materials.

The invention relates to an environment-friendly heat insulation and sound insulation compound brick which comprises a heat insulation and sound insulation layer, a first brick layer and a second brick layer. The heat insulation and sound insulation layer is respectively provided with at least one group of first longitudinal and transverse trenches and at least one group of second longitudinal and transverse trenches on the first side surface and the second side surface, and the positions of the first and the second longitudinal and transverse trenches are mutually staggered; the first brick layer is integrally formed and combined on the first side surface of the heat insulation and sound insulation layer and fully filled in the at least one group of the first longitudinal and transverse trenches; the second brick layer is integrally formed and combined on the second side surface of the heat insulation and sound insulation layer and fully filled in the at least one group of the second longitudinal and transverse trenches; and the thickness of the second brick layer is greater than that of the first brick layer.

The invention discloses a preparation method of silicon oxide / phenolic aldehyde binary composite aerogel. The invention aims to overcome the shortcomings of an existing technology and enhance the acid-base compatibility of silica sol and phenolic aldehyde. Self-made alkaline alcohol-solvent silica sol is mixed with a phenolic resin sol system, and a high-temperature sol-gel reaction is adopted soas to obtain the silicon oxide / phenolic aldehyde binary composite aerogel material under the condition of normal pressure drying. According to the method, the alkaline silica sol is adopted as a silicon source, when the alkaline silica sol is compared with traditional acid silica sol, better compatibility with the alkalinity of a phenolic aldehyde curing system can be achieved, and the room temperature stability of the composite sol is improved, so that application in a practical industrial process becomes possible; and meanwhile, formation of a hybrid aerogel interpenetrating network structure can be improved effectively through the compatibility.

The invention discloses a cobalt-carbon composite wave-absorbing material derived from a nickel-doped metal organic framework and a preparation method thereof, which belong to the technical field of microwave absorbing materials. By adjusting the adding amount of nickel salt in the 2-methylimidazole cobalt and melamine compound, the magnetic metal components and content in the derived cobalt-nickel-carbon material, the graphitization degree and structural form of the carbon material and the like are effectively adjusted, optimization of electromagnetic loss is achieved, and then effective absorption frequency band broadening is achieved under the low filling degree. The introduction of the nickel nanoparticles promotes the appearance of the sheet-shaped carbon material, and the cobalt and nickel nanoparticles catalyze the growth of the short carbon nanotubes, so that both the cobalt and nickel nanoparticles are helpful for enhancing the conductivity under a low filling degree; and more surface defects and abundant interface structures also promote the enhancement of polarization loss. The effective absorption frequency band of the derived cobalt-nickel-carbon composite wave-absorbing material can reach 5.6 GHz under the conditions that the filling degree is 20 wt% and the thickness is 1.7 mm, and excellent light broadband wave-absorbing characteristics are shown. The manufacturing cost is low, and the manufacturability is good.

The invention specifically relates to a lightweight, heat-preserving, high-strength and environment-friendly building board and a preparation method thereof, belonging to the field of building materials. The environment-friendly building board is prepared from the following components by weight: 5 to 10 parts of cement, 3 to 12 parts of gangue, 4 to 15 parts of fly ash, 2 to 8 parts of paraffin, 7 to 13 parts of urea, 4 to 8 parts of sulfomethyl phenol formaldehyde resin, 8 to 15 parts of bentonite, 3 to 9 parts of methyl cellulose, 1 to 5 parts of mullite, 2 to 5 parts of Chinese medical stone, 2 to 5 parts of zeolite, 1 to 6 parts of sulfomethyl lignite, 4 to 15 parts of hydroxyethyl cellulose and 0.5 to 1.5 parts of a foaming agent. The board provided by the invention has good performances like lightweight, heat preservation, fire resistance and high strength, and the performance index of the board is much higher than national and industrial standard requests in China.

The invention relates to a partition wall ribbon plate, in particular to a partition wall ribbon plate prepared from pulverized fuel ash and desulfurized gypsum and a preparing method of the partitionwall ribbon plate. The partition wall ribbon plate is prepared from, by weight, 40-80% of the pulverized fuel ash, 5-20% of the desulfurized gypsum, 5-30% of aggregate and 5-20% of admixture, and theadmixture is prepared from, by weight, 30-35 parts of silicate, 3-5 parts of borate, 1-2 parts of sulfate, 3-5 parts of phosphate, 3-5 parts of hydroxide, 1-2 parts of haloid and 1-5 parts of lignosulfonate. Under the synergistic effect of all components of the admixture, all oxides in the pulverized fuel ash are subjected to a bonding reaction, a hardened framework like a mullite crystal structure and an ettringite crystal structure is generated, and the pulverized fuel ash treated by the admixture shows stable physical and chemical properties. The pulverized fuel ash difficult to treat is treated to obtain the partition wall ribbon plate, and the partition wall ribbon plate has the functions of being light, preserving heat and being high in strength and resistant to fire and water and the like.

The invention specifically relates to a lightweight, heat-preserving, high-strength and environment-friendly building board and a preparation method thereof, belonging to the field of building materials. The environment-friendly building board is prepared from the following components by weight: 5 to 10 parts of cement, 3 to 12 parts of gangue, 2 to 8 parts of paraffin, 4 to 8 parts of sulfomethyl phenol formaldehyde resin, 6 to 14 parts of a glass fiber, 8 to 15 parts of bentonite, 3 to 9 parts of methyl cellulose, 1 to 5 parts of mullite, 2 to 5 parts of Chinese medical stone, 2 to 5 parts of zeolite, 1 to 6 parts of sulfomethyl lignite, 4 to 15 parts of hydroxyethyl cellulose and 0.5 to 1.5 parts of a foaming agent. The board provided by the invention has good performances like lightweight, heat preservation, fire resistance and high strength, and the performance index of the board is much higher than national and industrial standard requests in China.

Disclosed are a thermoplastic fiber with excellent durability and a fabric comprising the same. More particularly, the thermoplastic fiber contains fluoropolymer particles with average particle diameter ranging from 0.01 to 5.0 / [Mu]m in thermoplastic resin to form the fiber. The inventive thermoplastic fiber is prepared by adding the fluoropolymer particles to the thermoplastic resin while spinning the thermoplastic resin. The inventive thermoplastic fiber exhibits superior durability, that is, resistance to friction and / or modification and is preferably adopted as yarns for footwear, furniture, (mountain-climbing) backpacks, abrasives, sportswear and so on.

The invention discloses a plastic hollow board comprising an upper plastic surface layer and a lower plastic surface layer. The plastic hollow board is characterized in that an intermediate layer is arranged between the upper plastic surface layer and the lower plastic surface layer, and the intermediate layer is a plastic board; forward direction projections are uniformly distributed on the plastic board, and the positive projections are hexagonal prism bodies with regular hexagonal cross sections and formed in a way that the surface of the plastic board downwards deforms and arches; backward direction projections are embedded between the adjacent positive projections on the plastic board, and the negative projections are arranged around the positive projections and are correspondingly arranged on the six regular hexagonal corners of the positive projections; the negative projections are columnar bodies formed in a way that the surface of the plastic board upwards deforms and arches; and the bottom surfaces of the positive projections are fixedly connected with the lower plastic surface layer, and the top surfaces of the negative projections are fixedly connected with the upper plastic surface layer. According to the plastic hollow board, the upward stresses on the sides are uniform, so that the bearing capacity of the periphery of the hollow board in the case of lateral stress achieves a high level.

The invention relates to an activator, in particular to a compound pulverized fuel ash activator and application. The compound pulverized fuel ash activator is used for activating pulverized fuel ash,and is prepared from, by weight, 30-35 parts of silicate, 3-5 parts of borate, 1-2 parts of sulfate, 3-5 parts of phosphate, 3-5 parts of hydroxide, 1-2 parts of haloid and 1-5 parts of lignosulfonate. Sulfate is prepared from dicalcium silicate, tricalcium silicate and a C component, and the C component is prepared from at least one of sodium silicate, sodium metasilicate or potassium metasilicate. By means of the compound pulverized fuel ash activator and the application, the pulverized fuel ash is directly or indirectly subjected to chemical modification of the surface of the pulverized fuel ash and modification of substances among particles of the pulverized fuel ash, generation of gel substances and the generation of all structure crystals are promoted, and treated pulverized fuel ash shows stable physical and chemical performance. The invention further provides the application of the compound pulverized fuel ash activator in preparing partition slats, the prepared partition slats have stable quality, have the fireproof level of A1, and have the advantages of having low weight, heat insulation, high strength, fire resistance, water resistance and the like.

The invention discloses an environment-friendly plate which comprises, by weight parts, 8-15 parts of coal gangue, 5-15 parts of calcium carbonate, 10-15 parts of fly ash, 5-10 parts of PVC resin, 5-15 parts of fibrous material, 3-5 parts of methylcellulose, 1-3 parts of zeolite and 5-15 parts of vinyl acetate. The environment-friendly plate has the advantages of being extremely good and light, performing heat insulation and being fireproof and high in intensity, and the environment-friendly plate not only can meet outdoor building heat-insulation construction requirements, but also can meet indoor heat-insulation requirements.

The invention belongs to the field of prefabricated building material lightweight prefabricated parts, and particularly relates to a preparation method of a large-dosage solid waste-based alkali-activated foam concrete prefabricated part, which comprises 80-240 parts of solid waste-based aggregate, 60-80 parts of solid waste-based micro powder, 5-30 parts of mineral admixture, 15-30 parts of alkali activator, 5-15 parts of water, 2-8 parts of composite foaming agent, 1-8 parts of admixture, and 0.5-3 parts of fiber; the composite foaming agent comprises 4-7 parts of a foaming agent, 2-4 parts of a water repellent and 0.03-0.06 part of a foam stabilizing component. The large-dosage solid waste-based alkali-activated foam concrete prefabricated part is good in heat insulation performance, low in cost, low in water absorption rate and ideal in temperature resistance and fire resistance, has mechanical property indexes higher than those of common foam concrete components, has the characteristics of early strength and rapid hardening, and can effectively solve the problems of later-stage pulverization, strength shrinkage and the like of the surface of a plate.

The invention relates to a laywire combination structure for concrete buildings, which comprises a steel screen which is characterized in that a positioning connecting device is arranged on the steel screen; self-compacting concrete is cast on the steel screen and hardened to be integrated with the steel screen. Therefore, a laywire with a main structure of the steel screen can achieve high bearing strength and good impact resistance; the self-compacting concrete can pass through the steel screen easily and can be well combined with the steel screen to form a combined concrete laywire structure; moreover, the concrete structure can not crack and can assist force transmission and bearing of a whole structure of a building to play a certain bearing effect. The laywire combination structure has significant environmental, economic and social benefits and especially can strengthen compression strength, density, tensile strength, breaking strength, modulus of elasticity and other indexes. The laywire combination structure is applicable to load bearing walls, shear walls, profiled columns of various structures and dense reinforcement structures, especially suitable for large-size, large-density, large-span, dense and continuously-cast components of building structures.

The invention discloses a drainage riser connector of a caisson-type toilet. The drainage riser connector comprises a riser connecting pipe, wherein a lead-in pipe connecting opening is formed in the upper part of the riser connecting pipe; a lead-out pipe connecting opening is formed in the lower part of the riser connecting pipe; the riser connecting pipe is of a structure with an annular waist base extending outwards around the middle section and an annular waist leakage liquid lead-in channel formed on the annular waist base; the annular waist leakage liquid lead-in channel comprises an annular waist leakage liquid collection opening formed in the top surface of the annular waist base, an annular waist leakage liquid lead-in opening which introduced into the riser connecting pipe from the lower part of the annular waist leakage liquid collection opening, and an annular waist leakage liquid diversion cavity connected between the annular waist leakage liquid collection opening and the annular waist leakage liquid lead-in opening; the riser connecting pipe is provided with a diversion baffle for preventing down water from flowing backward into the annular waist leakage liquid lead-in opening in the inner wall corresponding to the position above the annular waist leakage liquid lead-in opening. Compared with the prior art, the secondary drainage problems of drainage caissons at the same layer can be thoroughly solved.

The invention provides a lightweight flexible high-thermal-conductivity nanometer carbon composite film and a preparation method thereof. The nanometer carbon composite film comprises a plurality of composite units, which are laid up in sequence. Each composite unit includes flexible bonding layers and a graphene film layer, wherein the flexible bonding layers are arranged at two sides of the graphene film layer. The nanometer carbon composite film is prepared by laying the composite units up in sequence and being subjected to thermocompression. The prepared nanometer carbon composite film has characteristics of high thermal conductivity, light weight and flexibility, and has an inside-surface thermal conductivity no less than 500 W / (m*K) and the density no more than 2.0 g / cm<3>. The nanometer carbon composite film has the thermal conductivity still no less than 500 W / (m*K) after being repeatedly bended at 180 degrees for 50 times, and no graphene is peeled off the surface. The nanometer carbon composite film has bright application prospects in the fields, such as satellite communications, earth observation, deep space exploration and civil electronic devices.

The invention discloses a sludge ceramsite and ceramsite enhanced foam concrete self-insulation building block and a preparation method of the building block. Sludge ceramsite is obtained through puffing under high temperature after at least one of building rubbish, coal ash and mountain flour is mixed with sludge for granulating, the obtained sludge ceramsite has the characteristics of low density, high strength, low heat conductivity coefficient and high corrosion resistance, the ceramsite enhanced foam concrete self-insulation building block with low density, high strength, good heat insulation performance, low shrinking percentage, low water absorption rate, high impervious performance, good freezing resistance, good waterproof performance and durability, good sound insulation effect and good shock resistance and damping performance can be prepared by the obtained sludge ceramsite taken as an aggregate as well as sludge ceramsite, low calcium secondary coal ash, ordinary portland cement, detrital saltpetre, microcrystal inorganic materials, water, auxiliaries and the like through a physical foaming method; the preparation method is simple and low in cost, and meets industrial production.

The invention provides an electric vehicle power assembly suspension system and a vehicle. The electric vehicle power assembly suspension system comprises a left suspension support, a right suspensionsupport and a rear suspension support. The left suspension support, the right suspension support and the rear suspension support are all arranged on an auxiliary frame and are used for supporting anelectric vehicle power assembly. By means of the electric vehicle power assembly suspension system and the vehicle, the light weight level of the whole vehicle can be improved, the assembly efficiencycan be improved, the damping effect can be enhanced, and the matching range of rigidity can be widened.