32results about How to "Improve peel performance" patented technology

The invention relates to an anti-melting aluminum-silicon alloy corrosion gradient protective coating for solar thermal power generation, and a preparation method thereof, in particular to an MoB / CoCr gradient protective coating for the inner wall of an aluminum-silicon alloy energy-storage material container for solar thermal power generation, and a preparation method thereof. The MoB / CoCr gradient protective coating is composed of a MoB / CoCr surface protective coating with the thickness of 130mu m and the heat expansion coefficient of 9.2*10<-6> / K and a Co-based alloy buffering transition coating with the thickness of 60mu m and the heat expansion coefficient of 12.5*10<-6> / K. The MoB / CoCr gradient protective coating is spray-painted on a 310S substrate through low-pressure plasma spray painting. Shown by implementation on specimens, the MoB / CoCr gradient protective coating is well matched with the 310S substrate, so that the stress cracking and peeling resisting capabilities of the coating are improved, and the number of thermal shock resisting times reaches 70; the MoB / CoCr gradient protective coating has low porosity, the MoB / CoCr surface protective coating has a porosity of 1.13%, and the buffering transition coating has a porosity of 0.84%; and both the MoB / CoCr surface protective coating and the MoB / CoCr coating powder material contain only two phases of CoMo2B2 and CoMoB.

The invention discloses a manufacturing method of a heat-shrinkable auto-adhesive vacuum plating protective film. The manufacturing method comprises the following steps: (1) firstly, synthesizing polyvinyl polyacrylate; (2) then, performing melt blending on the polyvinyl polyacrylate, polyethylene resin, a first initiator and an antioxidant according to a weight proportion, extruding and granulating, and finally performing extrusion film blowing and UV curing to obtain the heat-shrinkable auto-adhesive vacuum plating protective film. The manufactured protective film wraps a local part, required to be protected, of a vacuum plating component in a heat shrinkage way; in a vacuum plating process, the surface of the film does not crease and deform, the adhesion force is stable, the attachment property is good, the re-peeling performance is excellent, the phenomenon of adhesive residue is avoided, and the barrier and mechanical properties are excellent; the heat-shrinkable auto-adhesive vacuum plating protective film is an excellent vacuum plating protective film material which is non-toxic, environmentally-friendly, safe and practical.

The invention discloses a composite metal ceramic coating for high-temperature alloy protection and a preparing method of the composite metal ceramic coating. The coating comprises a face layer and abottom layer with a nano columnar crystal structure. The face layer comprises at least two metal ceramic sub layers, and a metal parent phase and a dispersed distribution nitride ceramic phase are specifically included. In the direction from the surface of the composite metal ceramic coating to an alloy matrix, the doping amount of the nitride ceramic phase is gradually reduced, and the distribution interval of the volume fraction of the nitride ceramic phase is 0.1-60%. According to the preparing method of the coating, magnetic control sputtering is adopted for preparing a bottom layer coating, and then, non-balance reaction magnetic control sputtering is utilized for preparing the face layer of the doped ceramic phase. Through the structure, the heat expansion coefficient of the coatingis gradually increased from top to bottom, jumping changes of the heat expansion coefficient on the coating / oxide film interface are reduced, accordingly, the heat stress in an oxide film in the heatcirculation process is relieved, and the capability of oxide film peeling resisting of the coating in the heat circulation is enhanced.

The invention discloses a filter element impurity knocking and peeling device. The filter element impurity knocking and peeling device comprises a rotary shaft, power discs, a driving rod, knocking heads, a working tabletop, a filter element placement plate and a driven rod, wherein the power discs are mounted on the rotary shaft; a plurality of teeth are arranged on the outer circumferences of the power discs; each tooth is of an arc-shaped bulge structure; the adjacent teeth are in gap connection; a fixed shaft is arranged at the position of one side of the rotary shaft; the fixed shaft is parallel to the rotary shaft; the fixed shaft is provided with a shaft sleeve which rotates independently; the driving rod and the driven rod are fixed on the outer side face of the shaft sleeve. The filter element impurity knocking and peeling device disclosed by the invention has the beneficial effects that a plurality of groups of the power discs and the knocking heads are arranged and a filterelement can be subjected to all-directional knocking; the dust and impurity peeling effect is improved; a filter element can rotate for a certain angle under the knocking of the knocking heads, so that the filter element can rotate while being knocked, and the peeling effect of dust and impurities is improved; a whole structure is simple and the filter element impurity knocking and peeling deviceis convenient to operate and has very strong practicability.

The invention discloses a manufacturing method of a self-adhesive protective film for vacuum plating. The manufacturing method comprises the following steps: weighing the following raw materials in parts by weight: 100 parts of polyethylene resin, 2-15 parts of acrylate monomer, 0.2-5.0 parts of a first processing additive, and 0.2-1.0 part of a second processing additive; firstly, dissolving the acrylate monomer and the first processing additive in a solvent to obtain a solution, then uniformly mixing the solution with polyethylene resin and the second processing additive in a blender, realizing in-situ grafting and extrusion granulation in an extruder, finally film-forming the prepared grafted granules through a blow molding or tape-casting method directly. The manufacturing method is simple in process; the manufactured protective film is vacuum-plated in a local position, needing to be protected, of a part; during vacuum plating, the surface of the film has no wrinkle and no deformation, is stable in adhesion, good in attachment property and re-peeling performance, has no residue phenomenon; the protective film is excellent in barrier and mechanical properties, non-toxic, environment-friendly, safe and practical, and is an excellent vacuum-plated protective film material.

The invention discloses anti-crack modified quartz-based mica powder full mold paint. The anti-crack modified quartz-based mica powder full mold paint is prepared from, by weight, 100-102 parts of quartz powder, 0.9-1.1 parts of modified starch, 0.9-1.1 parts of carboxymethylcellulose, 2.4-2.6 parts of sodium bentonite, 0.9-1 part of mica powder, 0.8-0.9 part of tetrapod-like zinc oxide whiskers, 0.9-1.1 parts of silica sol, 10-13 parts of ethanol, a proper amount of water, 0.4-0.5 part of nano spherical aluminum oxide, 0.7-0.8 part of straw powder and 4-5 parts of sodium hydroxide solution with the concentration being 20-25w%. According to the anti-crack modified quartz-based mica powder full mold paint, the nano spherical aluminum oxide and the straw powder are used, and the straw powder is modified, so that the crack resistance of the paint is improved; in addition, the nano spherical aluminum oxide is used for modification, so that the heat resistance of the straw powder is improved, and the situation that sudden carbonization occurs during casting, a large amount of gas is released, and consequentially air holes of a casting are caused is avoided; and furthermore, the strength and smooth finish of the paint after sintering are improved, and the spalling resistance is improved.

The invention discloses a scratch-resistant protective film and a preparation method thereof and belongs to the field of packaging industry. The scratch-resistant protective film comprises a substrate layer and a functional coating, wherein the substrate layer is PE which is 30-60 microns in thickness and the functional coating is 15-25 microns in thickness. The functional coating comprises the following components in parts by mass: 50-70 parts of organic silicon resin, 6-12 parts of polyisocyanate, 3-7 parts of nanotitanium oxide, 4-8 parts of a silane coupling agent, 0.5-2 parts of a graphite powder and 15-25 parts of deionized water. The scratch-resistant protective film disclosed by the invention is stable in viscous force and good in adhesiveness and re-peeling property, has a good wear-resistant and scratch-resistant performance, and can be effectively used for preventing household appliances from being physically scratched, so that the service lives of the household appliances are prolonged.

Disclosed is a pre-cleaning method of a reaction system, comprising: confirming a cooling region taking a first temperature and a second temperature as boundary values, wherein, the first temperature is higher than the second temperature; executing the pretreatment operation so as to make the temperature in the reaction system be the first temperature; executing the cooling operation from the first temperature to the second temperature; beginning to execute the vacuum pumping operation in the cooling process; executing the air suction and heating-up operation after the temperature is reduced to the second temperature so as to make the temperature in the reaction system be the reaction temperature at least. The invention can reduce the pre-cleaning time to improve the production efficiency, and can also enhance the micro-particle removing effect.

The invention discloses a quick-dry high-strength strippable film for radioactive surface decontamination, which is prepared from the following raw materials in parts by weight: 20-30 parts of film forming matter, 30-40 parts of industrial alcohol, 5-10 parts of decontaminant, 5-10 parts of reinforced fiber, 0.4-1 part of dispersing agent, 0.1-1 part of defoaming agent, 1-2 parts of coalescing agent and 20-30 parts of deionized water, and the film forming substance is at least one of aliphatic polyurethane acrylic acid, polyisoprene high-elasticity emulsion, polypropylene glycol or waterborne polyurethane resin.

The invention discloses an alcohol-based coating for sand casting production of a large steel casting and a preparation method of the alcohol-based coating. A formula comprises the following components of refractory powder, a binder, a high-efficiency suspending agent, a curing agent, an auxiliary agent A, an auxiliary agent B and methanol, and a high-quality casting paint is obtained through mixing, stirring, colloid milling and other treatment. The paint has the advantages of excellent high temperature resistance, excellent sand burning resistance, favorable paint layer stripping performanceand obvious cost benefit. When the coating is applied, the coating has excellent technical effects in the aspects of suspension, shear thinning, thixotropy, leveling property and the like, and the coating is not liable to blister and delaminate in the use process.

The invention provides a rust removing technology for a black-skin steel reel. The rust removing technology comprises the following steps that the black-skin steel reel is subjected to scale braking rust removing through a four-station scale breaker, a steel belt passes through two bending roller sets, the steel belt is bent through simultaneous operation of upper bending rollers and lower bending rollers, the elongation rate of the steel belt is increased, and the extension difference between rust scales and a base material is increased, so that the opening degree of cracks of the rust scales on the surface of the steel belt is increased, and meanwhile edge waves of the steel belt are eliminated; and then the steel belt passes through two straightening roller sets, and through simultaneous operation of upper straightening rollers and lower straightening rollers, C-shaped warped parts and L-shaped warped parts of the steel belt are eliminated; the rust scales cracked on the surface of the steel belt subjected to rust removing through the four-station scale breaker are removed in the mode of grinding and scrubbing; and the rust scales on the surface of the ground and scrubbed steel belt are removed in an electrolysis mode, during electrolysis, the rust scales on the surface of the steel belt are converted into sediments of Cr(OH)3 and Fe(OH)3 to be removed, and the rust scales on the surface of the steel belt are peeled off through O2 and H2 generated in the electrolysis process. According to the rust removing technology for the black-skin steel reel, the rust removing capacity of the whole technological process is reinforced, and the production efficiency is improved.

The invention discloses a pipeline decontamination device and decontamination method for intelligent water affairs, and belongs to the technical field of intelligent water affairs. According to the pipeline decontamination device and decontamination method for the intelligent water affairs, normal water flow pressure serves as propulsive force to migrate in a pipeline, and a water suction pipe is used for directly absorbing water from water flow and conveying the water into an internal water storage bag. Then the water is conveyed to a water retention sleeve again through the main water guide fiber yarn, at the moment, a propelling pipe on a composite sewage disposal pipe absorbs the water and then chemically reacts to release a large amount of gas, the composite sewage disposal pipe is forced to leave the water retention sleeve by utilizing the counter-acting force of the gas, and the outer dispersion sewage disposal pipe is dispersed in a radial shape after being extruded by the inner wall of the pipeline, the inner wall of the pipeline is brushed, and meanwhile, dirt cleaning vibration balls in a storage pipe continue to move under the inertia effect to impact the inner wall of the pipeline, the dirt cleaning effect is improved based on the physical and chemical dual effects through the resonance effect and carried hydroxy tricarballic acid, and the efficiency and effect of dirt cleaning of the pipeline can be greatly improved.

The invention provides a four-station scale breaker which comprises a rack, two bending roller sets arranged on the rack and two straightening roller sets. Each bending roller set comprises an upper bending roller and a lower bending roller, wherein the diameter of the upper bending roller is equal to that of the lower bending roller; each straightening roller set comprises an upper straightening roller and a lower straightening roller, wherein the diameter of the upper straightening roller is larger than or smaller than that of the lower straightening roller; a steel belt passes through the two bending roller sets firstly, and the upper bending rollers and the lower bending rollers operate in a staggered mode, so that edge waves of the steel belt are eliminated while the steel belt is bent; and then the steel belt passes through the two straightening roller sets, the steel belt shape is adjusted through simultaneous operation of the upper straightening rollers and the lower straightening rollers, and C-shaped warped parts and L-shaped warped parts of the steel belt are eliminated. According to the four-station scale breaker, the extension difference between scales on the surface of a raw material steel reel and a base material can be effectively increased, the product quality is improved, and the production efficiency is improved.

The invention provides a niobium-containing high-carbon nickel-iron-based alloy and a preparation method thereof. The niobium-containing high-carbon nickel-iron-based alloy comprises the following chemical components of C, Cr, Fe, Nb, Mn, Co, a small amount of RE (Y or Ce) and Ni. The niobium-containing high-carbon nickel-iron-based alloy has a gamma phase and a carbide phase formed by Cr23C6, and the volume fraction of the carbide phase is 14%-20%. The niobium-containing high-carbon nickel-iron-based alloy and the preparation method thereof are characterized in that by adding a proper amount of Nb, the alloy has a low oxidation rate and high oxidation film peeling resistance under a high-temperature oxidation environment with the using temperature being lower than 1100 DEG C, and the alloy is suitable for manufacturing components such as high-temperature cracking pipes in petrochemical units and pulverized coal fired boiler overheater or reheater pipes. Besides, as for the alloy, a large amount of Fe replaces part of Ni, so that the production cost is low, and the remarkable price advantage is achieved.

The invention relates to a film uncovering method which comprises the following steps: providing a substrate to which a protective adhesive tape is attached, forming a notch at the edge of the substrate, and enabling the protective adhesive tape to completely coincide with the notch; pressing the film uncovering adhesive tape on the protective adhesive tape in a non-thermal pressing manner; and using the film stripping mechanism for tearing the film uncovering adhesive tape from the notch position, and removing the protective adhesive tape from the substrate. Under the conditions of no heating and no auxiliary device, the protective adhesive tape is successfully removed from the substrate, the protective adhesive tape made of a soft material is conveniently selected to protect the substrate, the risk of damage to the substrate in the processing process is avoided, the product quality is ensured, and the film uncovering cost is reduced.

An object of the present invention is to provide a masking material having excellent peeling properties even if the drying step is reduced, preferably without the drying step. There is provided a curable composition a prepolymer (A) having a urethane / urea bond and at least two acrylic polymerizable groups, and solid particles (B), and having a viscosity at 40° C. of at least 10 Pa·s and at most 300 Pa·s.