54results about How to "Prevent cracking and falling off" patented technology

The invention discloses a square steel confined concrete arch center wall back filling bolting-grouting support system and a construction method. The square steel confined concrete arch center wall back filling bolting-grouting support system comprises high-strength anchor rods, grouting anchor rods, grouting anchor cables and multiple square steel confined concrete arch centers, wherein adjacent square steel confined concrete arch centers are connected through longitudinal beams, anchor rod holes are formed in the longitudinal beams, longitudinal beam anchor rods penetrate the longitudinal beams through the anchor rod holes to be anchored into a surrounding rock, a wall back filling layer is arranged between the square steel confined concrete arch centers and the surrounding rock, and the square steel confined concrete arch centers, the wall back filling layer and the tunnel surrounding rock are connected through the longitudinal beam anchor rods. The high-strength anchor rods, the grouting anchor rods and the grouting anchor cables are constructed before the square steel confined concrete arch centers are erected. The square steel confined concrete arch center wall back filling bolting-grouting support system and the construction method are applicable to supporting of underground projects including weak broken surrounding rock tunnels and the like, the square steel confined concrete arch center wall back filling bolting-grouting support system has the advantages of being high in strength, good in stability, reasonable in stress and the like, and the square steel confined concrete arch center wall back filling bolting-grouting support system and the construction method can effectively improve the primary supporting strength after tunnel excavation and ensure the stability of the tunnel surrounding rock.

The invention relates to an outer heat-insulation system of an outer wall. The outer surface of a basal layer wall body (1) is sequentially provided with an interfacial agent processing layer (2-1), a bonding mortar layer (3), a polyphenyl plate heat-insulation layer (4), a interfacial agent bonding layer (2-2), a first flexible heat- insulation putty layer (6-1), a second flexible heat- insulation putty layer (6-2), a closed base paint layer (7), an elastic heat- insulation coating layer (8) and a mat coat varnish layer (9) from inside to outside, wherein the first flexible heat- insulation putty layer (6-1) is internally provided with glass fibre gridding cloth (5); and all the layers are combined with the basal layer wall body (1) into a whole after being dried and solidified; flexible heat-preserving putty of the two flexible heat-preserving putty layers, which contains 20-40 percent of heat-preserving materials, is formed, and elastic heat-preserving coating of the elastic heat-preserving coating layer (8), which contains 5-15 percent of heat-preserving materials, is formed. The outer heat-preserving system can prevent the polyphenyl plate heat- insulation layer (4) from cracking and desquamating caused by external temperature difference because of the heat preservation and isolation of the flexible heat- insulation putty layers and the elastic heat-preserving coating layer (8), thereby prolonging the service life of the heat-preserving system and enhancing the energy-saving effect of buildings.

The invention discloses a nonstick coating containing a graphene material. The nonstick coating is formed by a bottom layer and a surface layer; the bottom layer comprises, by weight, 50-90 parts of apolytetrafluoroethylene / polysulfone blend, 0.5-2 parts modified graphene oxide, 1-5 parts of a thermochromic pigment, 0.8-1.2 parts of modified silicon carbide whiskers, 1.5-3 parts of an additive and 15-35 parts of deionized water; and the surface layer comprises, by weight, 35-75 parts of polytetrafluoroethylene resin, 1.5-5 parts of modified calcium carbonate whiskers, 3-8 parts of fatty alcohol polyoxyethylene ether ammonium sulfate, 5-10 parts maleic anhydride and 35-60 parts deionized water. Different raw material components of the bottom layer and the surface layer are reasonably combined, so the obtained nonstick coating has the advantages of good over-temperature prompting function, facilitation of control of the cooking heat, excellent high temperature wear resistance, and prolongation of the service life of a nonstick pan.

The invention discloses a solar heat reflection type heat insulation coating structure. The solar heat reflection type heat insulation coating structure comprises an inorganic heat insulation mortar layer, a flexible heat insulation putty layer, an elastic heat insulation coating and a solar heat reflection coating layer which are sequentially arranged at the outer surface of a wall body from interior to exterior. The solar heat reflection type heat insulation coating structure has the advantages that the cost is low, the bonding with the wall body is tight, the construction is simple and controllable, the excellent heat reflection cooling and heat insulation effects are realized, the combustion property class requirement is met, and the energy-saving and environment-protection concept is met.

The invention discloses a thermal insulation wall body. The thermal insulation wall body comprises a main wall body layer; the external side of the main wall body is sequentially provided with a thermal insulation board layer, a hot galvanizing steel wire mesh layer, an acoustic panel layer, a glass fiber grinding cloth layer and a decorative coating layer; the thermal insulation board layer and the main body wall layer are bounded together through the thermal insulation board adhesive; the thermal insulation board layer, the hot galvanizing steel wire mesh layer, the acoustic panel layer and the decorative coating layer are bounded through the fireproofing glue. The thermal insulation wall body has the advantages of improving firmness, increasing sound insulation effect, avoiding cracking and falling off, saving construction procedures, reducing production materials and having a good application prospect due to the fact that the hot galvanizing steel wire mesh layer, the acoustic panel layer and the glass fiber grinding cloth layer are added to the thermal insulation wall body.

The invention relates to epoxy expansion type fireproof coating enhanced by various carbon-based materials. The epoxy expansion type fireproof coating is prepared from a component A and a component Baccording to the weight ratio of 3 to 1, wherein the component A is prepared by taking epoxy resin as a film-forming matter, and adding a foaming flame-retarding system (composed of a carbon-forming catalyst, a carbon-forming agent and a foaming agent), a carbon-forming enhancer, a toughening agent, a graphene substance, expanded graphite, carbon fiber, pigment and filler and an auxiliary agent; the component B is composed of a curing agent, the auxiliary agent and the pigment and filler. According to the epoxy expansion type fireproof coating enhanced by various carbon-based materials, provided by the invention, the technical problems that a fireproof coating layer is easy to crack and fall off are solved; the epoxy expansion type fireproof coating is applicable to safety protection of occasions which easily have hydrocarbon fire disasters, such as tunnels, chemical plants and marine oil production platforms.

The invention discloses a method for preparing a terminal shell, the terminal shell and a mobile terminal. The method for preparing the terminal shell comprises the steps that a coating layer is formed on the outer surface of a shell substrate through a vacuum electroplating method; a protection film is formed on the coating layer; the shell substrate with the protection film is pressed or heat-formed, so that the shell substrate has the preset shape; a color gradient layer is formed on the inner surface of the formed shell substrate; the shell substrate with the color gradient layer is processed, and the terminal shell is obtained. Therefore, cracking and falling caused by high temperature or high pressure to the color gradient layer in the shell forming process can be avoided, the methodis simple, the shell preparation effect is good, and the yield is high.

The invention claims an outer wall heat insulation face brick with a glaze-imitating surface and a preparation method thereof. The outer wall heat insulation face brick consists of a heat insulation layer basal body and a glaze-imitating surface layer integrated with the heat insulation basal body into a whole, wherein the glaze-imitating surface layer is prepared from phthalic anhydride-propanediol resin, silicon oxide particle, Portland cement, silica solution, inorganic short fibre, stearic acid, ammonium persulfate, benzoin, nanoscale titanium oxide superfine micro powder and nanoscale silicon oxide superfine micro powder. The preparation method ensures that the heat insulation layer and a decorative layer are firmly bonded, has high intensity and can effectively prevent the decorative layer from cracking and falling off; and besides, the decorative layer has the advantages of light weight, ageing resistance, long service life, water and moisture protection, good appearance effect, energy saving, environment protection, resource saving, and the like.

The invention supplies a environment protection energy saving heat preservation exterior wall coating material that contains polyvinyl alcohol 5-10%, acryloid cement 20-40%, cellulose liquor 10-20%, wollastonite in powder 10-30%, see-bubble powder 2-5%, asbestos fiber 1-4%, expanded perlite 5-12%, and water 10-30%. The raw material taking fully mixing to form thick slurry, it could be coated onto the wall. The invention has strong adhesion, high alkali resistance and high water resistance.

The invention belongs to the field of wall paint for indoor decoration and fitment, and particularly relates to paint. The paint is characterized by being prepared from the following raw materials in parts by mass: 30 parts of paint, 6 parts of zeolite powder, 5 parts of natural jade powder, 11 parts of rosin resin and linseed oil mixture, 6 parts of hydroxyethyl cellulose and 6 parts of water-borne acrylic acid. The paint is prepared from common easily-available raw materials which are low in cost and mostly non-toxic or slightly toxic materials, the rosin resin and linseed oil mixture can be used for preventing paint from cracking and separating, and the natural jade powder has a certain chalking resistance, and can be used for resisting and inhibiting bacteria. Therefore, the paint is safe and environment-friendly, has light smell, is hardly cracking or separating, and has excellent performance.

The invention relates to a coating composition. The coating composition comprises a polymerizable birefringent material and an optical adjusting assistant, and is formed by the polymerizable birefringent material, the optical adjusting assistant, a solvent, a processing aid and a use performance improving assistant. The polymerizable birefringent material is used as the main raw material, and theoptical adjusting aid is used as an auxiliary material, so a finally formed cured coating has optical anisotropy, and finally is processed into a functional layer capable of changing the color with the angle of incident light, so final daily necessities have the optical characteristic of Bragg reflection in a specific wavelength band of in the visible light range, and has the function of changingthe color with the angle; and the functional layer has the advantages of good durability, good weather resistance, good mildew resistance and good hand feeling performance, and enhances the use hand feeling of daily necessities.

The invention discloses an organic-inorganic composite coating material with a self-cleaning function. The organic-inorganic composite coating material is prepared through the following steps that nanometer titania sol, silica sol and Bola type silane coupling agents react; then, pigment and auxiliary agents are added, so that the organic-inorganic composite coating material with the self-cleaningfunction is prepared, wherein the mass ratio of the silica sol to the Bola type silane coupling agents is (0.2 to 0.5):1; the consumption of the nanometer titania sol is 3 to 10 percent of the totalmass of the silica sol and the Bola type silane coupling agents. A formed coating has high tenacity; cracking and falling cannot easily occur; good self-cleaning capability is realized; the clean appearance can be maintained in the long-time use process.

The invention provides an automobile sheet metal welding post-treatment process. The automobile sheet metal welding post-treatment process can solve the following problems that a, in the welding seamtreatment process of an existing sheet metal piece at a certain angle, pressure is prone to be caused on the sheet metal piece which is opened, then due to the fact that the sheet metal piece is extruded or stretched, the welding seam is cracked, or, the sheet metal piece is deformed and the like; and b, the welding seam of the sheet metal piece with the certain angle is difficult to clean, moreover, welding slag generated in the cleaning process is scattered around the welding seam, so that the welding seam cleaning difficulty is increased, and the cleaned welding seam is prone to be influenced and the like.

The invention relates to the technical field of thermally conductive adhesives and discloses a thermally conductive adhesive with high glass transition temperature and a preparation method thereof. The thermally conductive adhesive is prepared from the following raw materials (by mass): 5-80% of an organic silicon epoxy prepolymer; 1-50% of cycloaliphatic epoxy resin; 1-20% of an oxetane monomer,0-20% of macromolecular polyol, 0.2-25% of a curing agent, 0.1-2% of an antioxidant, 0.1-0.5% of a light stabilizer, 0.0-0.5% of a defoaming agent, 5-90% of a thermally conductive filler, 0.0-5% of adispersing agent and 0.2-2% of a coupling agent, wherein the sum of the components is 100%. The thermally conductive adhesive provided by the invention has high glass transition temperature (higher than 100 DEG C), higher elastic modulus (higher than 1000MPa), better toughness (the elongation is higher than 5%) and higher binding power; the thermally conductive adhesive is suitable for bonding anoptical fiber ring in an optical fiber gyroscope, the overall heat conductivity coefficient of the optical fiber ring can be effectively improved, the temperature gradient of the optical fiber ring isreduced, the full-temperature error of the ring is reduced, and the precision of the gyroscope is improved.

The invention relates to an outer wall light-weight heat preservation and decoration integrated plate. The outer wall light-weight heat preservation and decoration integrated plate comprises a heat preservation plate, the outer surface of the heat preservation plate is coated with a light-weight reinforcing piece, the light-weight reinforcing piece is coated with mortar, and the surface of the mortar on one side of the heat preservation plate is provided with a decoration coating, so that the heat preservation and decoration integrated plate is formed, the heat preservation and decoration integrated plate is provided with an inner side face connected to a wall body and an outer side face provided with decorative coating, the heat preservation and decoration integrated plate is provided with a vent hole penetrating through the side wall of the heat preservation and decoration integrated plate, and a ventilation embedded part arranged in the vent hole. According to the outer wall light-weight heat preservation and decoration integrated plate, the formed light heat preservation and decoration integrated plate further reduces the mass of an outer wall heat preservation structure, the prefabricated ventilation embedded part penetrates through the heat preservation plate, the matching parts at the two ends of the ventilation embedded part are connected to anchoring parts of the wall body, the ventilation embedded part is provided with a ventilation cavity communicating with a plate seam, water vapor generated by the wall body can be conducted outwards, and the phenomena that the water vapor is frozen and expands, and the heat preservation decorative plate cracks and falls off are avoided.

The present invention relates to a template, which comprises a plate body and two angle steel columns. The plate body is wooden, and the two angle steel columns are metal long rods and connected to two sides of the plate body. The two end sheets and a side body of each angle steel column are provided with connection holes used for connecting other templates. The two angle steel columns enhance the rigidity and support of the wooden plate body, while maintaining the flatness of the plate body, and provide longer service lifetime. The wooden plate can also be replaced in order to save material and cost.

The invention discloses a wear-resisting sintering wind box branch pipe and an online repair method. The wear-resisting sintering wind box branch pipe is characterized in that an easy-to-wear part of the wind box branch pipe is provided with a sealed cavity, wherein a framework network (5) is arranged in the sealed cavity; a pipeline for conveying colloid to the sealed cavity is further arranged in the sealed pipeline; and a high-temperature-resistant acid-resistant silica gel adhesive sticker body (6) is poured into the sealed cavity. According to the wear-resisting sintering wind box branch pipe disclosed by the invention, the characteristics of softness and good ductility of the adhesive sticker body are utilized to prevent a sprayed wear-resisting layer from a cracking and dropping phenomenon due to pipeline vibration, and the characteristics of lasting viscidity and easy supplementary nature of the adhesive sticker body are utilized, so that online repair is realized, and the problems of corrosion to the wear-resisting layer and the short service life are completely solved.

The invention discloses a building curtain wall steel structure rust removal method, and belongs to the field of steel structure rust removal. The passivation effect of a rust conversion agent is utilized, iron oxide is converted into a composite film firmly combined with metal, time-consuming grinding and rust removal work is omitted, paint fixing particles are creatively added into anti-corrosion paint to protect a passivation layer and prevent paint from falling off, an anti-corrosion spherical shell is attracted to a steel structure through the attraction effect of a magnet, the passivation layer can be tightly pressed on the steel structure to be prevented from falling off, a traction effect is achieved on the anti-corrosion paint, and large-area cracking and falling of the paint are effectively avoided; oxygen mixed into the paint is absorbed through a solid oxygen absorbent, bubbles are effectively reduced, and therefore the problem of paint bubbling in the later period is solved; and moisture is absorbed through a breathable film, a paint layer and the passivation layer are kept dry, and further rusting is effectively avoided.

The invention discloses a ground pipeline corrosion prevention device for an oil field and an operating method. The ground pipeline corrosion prevention device comprises outer corrosion prevention pipes, oil pipes, supporting rings, a polyamide epoxy resin layer, rubber rings, a 3PE pyrocondensation material, a casing, a locking disk, a high density polyethylene layer and epoxy coal tar pitch. Theoil pipes are arranged inside the outer corrosion prevention pipes. The outer corrosion prevention pipes are provided with outer pipe inner holes. Connecting rings are arranged at one ends of the outer corrosion prevention pipes. The two adjacent outer corrosion prevention pipes are connected. The connecting rings are matched with the outer pipe inner holes and further connected with the corresponding outer pipe inner holes through threads. The two adjacent oil pipes are connected. The outer sides of the supporting rings are matched with the outer pipe inner holes and further inserted into the corresponding outer pipe inner holes. The supporting rings are provided with supporting ring inner holes. The outer sides of the rubber rings are matched with the supporting ring inner holes and further connected with the corresponding supporting ring inner holes. Rubber sleeve inner holes are formed in the rubber rings. The outer sides of the oil pipes are matched with the rubber sleeve inner holes and further connected with the corresponding rubber sleeve inner holes.

The invention discloses a PTB (Polytechnisch Bedrijf Bvba / Sprl) multifunctional composite board for an outer wall as well as a preparation method and a use method thereof. The PTB composite board is formed by integrally pressing a PTB interface agent mortar layer, a waterproof anti-crack plastering layer, a rockwool slab or a foam glass plate and a PTB interface agent mortar layer from outside to inside in sequence. The preparation process comprises the steps of molding, pouring, high-frequency vibrating, demolding and curing. According to the invention, the heat insulating and energy saving difficulties and the poor quality problem of the composite plate are solved; the finished product composite plate which is waterproofing, heat-insulating, wear-resistant and corrosion-resistant and never cracks is prepared by using a thin high-strength reinforced concrete injection pressing method, adding European imported original PTB emulsion and successfully carrying out molding and pressing with a heat insulation board through difficult vacuum-pumping treatment in one step in a mechanical way, and has the obvious economic benefits and environment-friendly benefits because the traditional heat insulation method is abandoned.

The invention relates to a medical mask comprising a nanoscale photocatalyst functional layer. The medical mask comprises an upper cotton yarn layer and a lower cotton yarn layer, wherein an accommodation cavity is formed between the upper cotton yarn layer and the lower cotton yarn layer; a sterilization layer is placed in the accommodation cavity; and photocatalyst nano powder for sterilizationis wrapped in the sterilization layer. The medical mask comprises the upper cotton yarn layer and the lower cotton yarn layer; the accommodation cavity is formed between the upper cotton yarn layer and the lower cotton yarn layer; the photocatalyst nano powder is placed in the accommodation cavity; since adhesive layers are arranged on the sides, facing towards the accommodation cavity, of the upper cotton yarn layer and the lower cotton yarn layer; and the accommodation cavity is filled with the photocatalyst nano powder.

The invention discloses a sound-absorption, heat-insulation and fireproof building wall which comprises a wall and an inorganic material heat-insulation layer. The inorganic material heat-insulation layer is mounted on the outer side of the wall, a fireproof layer is arranged between the wall and the inorganic material heat-insulation layer, a sound-absorption plate is arranged between the fireproof layer and the wall, a facing layer is arranged on the side, which is far away from the fireproof layer, of the inorganic material heat-insulation layer, the inorganic material heat-insulation layer 3 is made of inorganic material micro-spheres which are coated on the surface of the side, which is far away from the wall 1, of the fireproof layer 4, and reinforcement meshes are arranged on the surfaces of two sides of the sound-absorption plate. The sound-absorption, heat-insulation and fireproof building wall has the advantages of sound-absorption, heat-insulation and fireproof properties.

The invention relates to an outer heat-insulation system of an outer wall. The outer surface of a basal layer wall body (1) is sequentially provided with an interfacial agent processing layer (2-1), a bonding mortar layer (3), a polyphenyl plate heat-insulation layer (4), a interfacial agent bonding layer (2-2), a first flexible heat- insulation putty layer (6-1), a second flexible heat- insulation putty layer (6-2), a closed base paint layer (7), an elastic heat- insulation coating layer (8) and a mat coat varnish layer (9) from inside to outside, wherein the first flexible heat- insulation putty layer (6-1) is internally provided with glass fibre gridding cloth (5); and all the layers are combined with the basal layer wall body (1) into a whole after being dried and solidified; flexibleheat-preserving putty of the two flexible heat-preserving putty layers, which contains 20-40 percent of heat-preserving materials, is formed, and elastic heat-preserving coating of the elastic heat-preserving coating layer (8), which contains 5-15 percent of heat-preserving materials, is formed. The outer heat-preserving system can prevent the polyphenyl plate heat- insulation layer (4) from cracking and desquamating caused by external temperature difference because of the heat preservation and isolation of the flexible heat- insulation putty layers and the elastic heat-preserving coating layer (8), thereby prolonging the service life of the heat-preserving system and enhancing the energy-saving effect of buildings.

The invention discloses an amino acid based cryoprotectant for frozen peeled shrimps and an ice glazing method. The amino acid based cryoprotectant is characterized in that the cryoprotectant for frozen peeled shrimps is prepared from components by mass concentration as follows: arginine with the mass concentration being 0.8%-1.5%, lysine with the mass concentration being 0.5%-1.0%, glycine with the mass concentration being 0.4%-0.8% and NaCl with the mass concentration being 1.5%-2.0%, and the pH value of a water solution system is 8.5-9.0. The ice glazing method comprises steps as follows: preparation of the cryoprotectant; a vacuum rolling process; ice glazing. The cryoprotectant for the frozen peeled shrimps is safe and efficient to use, and freezing denaturation of protein of the peeled shrimps and oxidation during frozen storage can be effectively reduced. The ice glazing method adopts a simple process, is lower in cost, can effectively prevent an ice glaze from cracking and control growth of microorganisms, can be applied to long-time frozen storage of the frozen peeled shrimps and can also be used for frozen storage of other aquatic products.

The invention discloses a fiber-doped reinforced microporous concrete six-surface-coated heat-insulating core material box-type structure product and a production method thereof. Fiber-doped reinforced microporous concrete and an efficient heat-insulating core material in a gapless manner are compounded to form a six-surface-coated frame-box-type small fireproof sub-bin structure, an inorganic material and six-surface coating with an organic efficient thermal insulation material achieve isolation from contacting with air and open fire, so good fireproof performance is achieved; and the box type structure limits thermal expansion of the core material, cracking and falling caused by uneven deformation are prevented, the durability of the product is greatly improved, and the product has the excellent characteristics of high strength, light weight and the like. After a wall is formed, the technical requirements of building heat preservation and structure integration and the same fireproof grade, durability and service life of a heat preservation layer and a main body structure can be really met. Unification of efficient heat preservation and fireproof durability is achieved.

The invention provides a thermal-insulation veneer for a wall and a manufacturing method thereof. The thermal-insulation veneer for the wall is characterized in that the thermal-insulation veneer comprises a matrix layer; a hollow glass microsphere-polyethylene foam composite thermal-insulation layer is arranged on the substrate layer; a composite latex reinforced layer is arranged on the hollow glass microsphere-polyethylene foam composite thermal-insulation layer; a veneering layer is arranged on the composite latex reinforced layer; the thickness of the matrix layer is 1-3 mm; the thicknessof the hollow glass microsphere-polyethylene foam composite thermal-insulation layer is 15-45 mm; the thickness of the composite latex reinforced layer is 3-5 mm; and the thickness of the veneering layer is 2-5 mm. The thermal-insulation veneer of the invention can effectively prevent cracking and falling; construction process is completed in one step; and construction efficiency is high, and thermal insulation effect is good.