68results about How to "Small deformability" patented technology

The invention discloses a wood powder reinforced polyurethane wood-imitation material for furniture and a production method thereof. The mixture of polyether glycol, foaming agent, catalyst, stabilizing agent and fire retardant serves as a white material, polyisocyanate serves as black material, and wood powder filler with 80-100 meshes serves as the stabilizing agent, wherein, the mass ratio of white material to black material to wood powder is 112:112:7. The production method is as follows: respectively mixing the white material according to ratio to prepare composite polyether; adding wood powder to prepare wood powder/ composite polyether mixture; then, adding the black material to prepare foaming mixture; and after injection molding and curing for 20 minutes, demolding to prepare the wood powder reinforced polyurethane wood-imitation material. The invention has the advantages that the compression strength and the shock resistance of the produced wood-imitation material and products are strengthened, wood texture effect is obvious, and density distribution is improved; the produced wood-imitation material and the product have stable size, small deformation and favorable heat insulation and sound insulation performance and are hard and ageing-resistant; flame retardant property can reach construction B2 grade, the product is environmentally-friendly and has low cost as well as favorable handling characteristics, such as sawing, digging, drilling, nailing, rubbing, sticking, coloring, coating and the like.

The invention provides a long bamboo section bar and solves the problems that a bamboo material is difficult to be lengthened and the application is limited. The invention is formed by arranging and lengthening bamboo bars or bamboo plates, along the length direction, the bamboo bars or the bamboo plates are lengthened by buckling and binding corresponding pull troughs or tenons; and along the direction of width and thickness, the blanks of the bamboo bars or the bamboo plates are pressed and compounded into the bamboo section bar with the set size. The bamboo section bar has the advantages that the structures of the pull troughs and tenons are novel, the top end of each tenons is an inclined plane so as to achieve the surface seamless effect, the availability of the bamboo material and the added value of the product are improved, and the bamboo section bar can be made into various products with random length, width and thickness according to the different requirements, thereby replacing steel with bamboo and replacing wood with bamboo.

The invention discloses a production method of natural cellulose membranes, comprising the following steps: (a) immersion; (b) squeezing; (c) grinding; (d) maturing; (e) etiolation; (f) solution; (g) film formation; (h) desulfuration; (i) bleaching; (j) plastification; and (k) drying. The production method has the advantages of mild reaction condition, short spacings among the prepared natural cellulose membranes, stable expansion rate and tensile strength, proper stiffness and flexibility, better colour and luster, good transparence, high hygiene property, and the like, improves the surface property of paper through the plastification, in particular enhances the smoothness of paper surfaces, improves the printability, reduces the deformability of paper and the moisture absorption, thereby reaching the new requirement of modern printing and packaging.

A sealing device (1) for a high-pressure sealing of line junctions comprises a cutting edge (2) and a protective edge (3). The cutting edge (2) permits a sealing of the line junction by means of plastic deformation. The protective edge (3) extends essentially parallel to the cutting edge (2) and projects beyond the cutting edge (2) in an axial direction 0-0 of the line.

The invention discloses a production method of a preservative natural cellulose membrane. The method comprises the following steps: a-(1) soaking, a-(2) squeezing, a-(3) crushing, a-(4) maturing, a-(5) yellowing and a-(6) dissolving the cellulose; b-(1) soaking, b-(2) squeezing, b-(3) crushing, b-(4) yellowing and b-(5) dissolving chitin; c-(1) mixing viscose; c-(2) forming a membrane; and c-(3) desulphurizing, c-(4) bleaching, c-(5) plasticizing and c-(6) drying the membrane. The reaction conditions of the method disclosed by the invention are mild; and the prepared preservative natural cellulose membrane has small space, stable elongation rate and tensile strength, proper stiffness and flexibility, relatively good color and luster and transparency, high hygiene property, antibacterial and bacteriostatic characteristics and the like.

A rotatable sputtering target has a target material, a back tube and a joint piece. The joint piece is disposed between the target material and the back tube. The joint piece has a compressible structure and an electrically and thermally conductive adhesive. Particularly, the compressible structure being a compressible blanket or a compressible sheet has multiple through holes and thus the electrically and thermally conductive adhesive is filled in the through holes and then directly formed between the target material and the back tube. Using the joint piece to joint the target material and the back tube not only maintains the joint strength but also elevates the tolerable power of the rotatable sputtering target, which can increase the sputtering efficiency.

The invention relates to the technical field of ceramic preparation, particularly to a preparation method of gradient functional ceramic. According to the invention, slurry and the process parametersof 3D printing are optimized, and particularly, sintering additives in ceramic composite powder in the slurry and the exposure energy of 3D printing are optimized; a blank is printed by adopting exposure energy corresponding according to different slurry; the blank obtained by 3D printing is uniform and has high forming rate; and a ceramic formed by degreasing and sintering the blank under certainconditions is small in deformability, high in structural and dimensional precision, good in interlayer cohesiveness and high in density and bending strength. The gradient functional ceramic preparedthrough the method is high in forming efficiency and forming size precision; the structure of the gradient functional ceramic can be accurately regulated and controlled; functionalization is achieved;the material cost of the ceramic can be reduced; and production efficiency is improved.

The present invention discloses a method for controlling the deformation of ceramic blank in the gel casting process which has the key point that in the gel casting process, the deformation of the ceramic blank is controlled in the drying process of the ceramic blank by controlling the content of monomer used for the gelling reaction and the proportion of the monomer to crosslinker in the slurry.The method is characterized in that acrylamide (AM) is used as the monomer and N, N'-methylene bisacrylamide (MBAM) is used as the crosslinker to prepare the slurry, the distribution of the gel network in the ceramic blank and the strength of the ceramic blank are controlled by controlling the content of the monomer used for the gelling reaction and the proportion of the monomer to crosslinker inthe slurry, and the problem of controlling the deformation of the ceramic blank in the drying process of the ceramic blank is solved.

The invention belongs to the technical field of foam acid and discloses microfoam acid liquid, constitution of a compound foaming agent of the microfoam acid liquid and a preparation method of the microfoam acid liquid. The microfoam acid liquid contains the following components in percentage by mass (100% in total): 10%-25% of HCl (hydrochloric acid), 0.36% of SDJR-2 (compound foaming agent), 0.24% of SBW-101 (foam stabilizer), 0.2% of FS3802 (thickening agent) and the balance of water, wherein the compound foaming agent SDJR-2 contains 55.56% of an FBM-5-2 foaming agent and 44.44% of an AK-304 foaming agent. The microfoam acid liquid has good properties of foaming, foam stabilization, viscosity maintenance, acid rock reaction retardance, temperature resistance, salt resistance, oil resistance, sand carrying and the like; by observing through an optical microscope, the microstructure and size of the microfoam acid liquid meet the dimensional requirement of microfoams; experimental evaluation shows that the microfoam acid liquid is a novel acid liquid system with excellent performance and has wide application prospects.

The invention relates to the field of a medical appliance, in particular to a disposable esophagus medicine applicator in department of gastroenterology. The disposable esophagus medicine applicator in department of gastroenterology comprises a silica gel air bag and an injector which are connected by a double-layer sleeve pipe, wherein the double-layer sleeve pipe comprises an outer pipeline andan inner pipeline arranged in the outer pipeline; and a plurality of groups of medical tough bars are respectively arranged on the curve surface side wall of the silica gel air bag. The disposable esophagus medicine applicator in department of gastroenterology has the advantages that the structure is simple; the cost brought by the use of a sphygmomanometer type latex air bag is reduced; in addition, by controlling the clamp blocks and conical clamp strips, the fixation of an elastic opening supporter and the double-layer sleeve pipe is realized; the displacement of the silica gel air bag dueto the swallowing of a patient can be avoided; the smearing effect is further improved; in addition, the operation and the use by a doctor are convenient; meanwhile, the medical tough bars have certain telescopic performance and can maintain the three-dimensional performance, so that the inner walls of the two sides of a medicine cavity cannot be in contact because the silica gel air bag becomes big, so that the deformation of the medicine cavity is reduced; further, medicine liquid can be conveniently injected into the medicine cavity; and the medicine liquid can be conveniently smeared ontothe esophagus position through a medicine leaking hole.

The invention relates to lightweight ultrahigh-strength concrete and a preparation method thereof. The lightweight ultrahigh-strength concrete comprises, by weight, 630 to 650 parts of cement, 280 to300 parts of ultrafine fly ash, 180 to 200 parts of silica fume, 100 to 120 parts of carborundum powder, 100 to 200 parts of floating beads, 150 to 200 parts of Peek plastic particles, 18 to 23 partsof organic polymer water-absorbent resin and 20 to 30 parts of a polycarboxylate superplasticizer, the water-binder ratio is 0.13 to 0.15, the floating beads are divided into two particle size gradesof 40 to 100 meshes and 20 to 40 meshes. According to the obtained lightweight ultrahigh-strength concrete, the internal structure is fully optimized and improved by the doped powder and aggregate, the volume weight is greatly reduced, the overall strength is improved, the performances are excellent, the preparation is simple, and the lightweight ultrahigh-strength concrete is suitable for popularization.

The invention relates to the technical field of 3D printing, in particular to a method for controlling precision of extrusion type 3D printing polymer line width. The method specifically comprises the following steps of dissolving short alkane chain grafted polyvinyl alcohol in an organic solvent to obtain a 3D printing solution, and performing 3D printing to obtain a printing sample; and soaking the printing sample in water and then placing in hot water for hydro-thermal treatment to obtain the 3D printing polymer. According to the method, the printing sample is subjected to hydro-thermal treatment, so that the size of the printing sample is reduced, and the reduction times of the printing sample are different under different hydro-thermal treatment temperature conditions, so that the reduction times of the printing sample can be controlled by controlling the hydro-thermal treatment temperature, and the technical purpose of controlling the line width precision of an extrusion type 3D printing polymer is achieved.

The present invention relates to an annular metal-ceramic gradient material and a preparation method thereof. The structure the gradient material is annularly distributed from inside to outside, one ring is a gradient layer, and each gradient layer comprises the following components of, by weight, 88% to 90% of raw material powder, 2.25% to 3.3% of a dispersing agent, 2.8% to 3.22% of a binding agent, 4.32% to 5.4% of a lubricant and 0.54% to 0.86% of a sintering additive. According to different gradient layers, the raw material powder comprises pure ceramic powder, pure metal powder and mixture of powder of the pure ceramic powder and the pure metal powder in any mixing proportion. According to the annular metal-ceramic gradient material and the preparation method thereof, the number of layers is controlled through injection molding, the process is simplified, the cost is reduced, the molding efficiency is high, the deformability is small, the gradient components are uniformly distributed, the structural precision and the size precision are high, the interlayer cohesiveness is good, the density and the bending strength are high, and the production efficiency is improved.

The invention provides a graphene heat-radiating LED street lamp modulator tube. The graphene heat-radiating LED street lamp modulator tube comprises an LED light source, a heat-conducting temperatureequalization plate and a heat radiator; the heat-conducting temperature equalization plate is located between the LED light source and the heat radiator; and the heat-conducting temperature equalization plate comprises a packing seal and a reversible energy-storage material located in the packing seal. The LED street lamp modulator tube comprises the novel heat-conducting temperature equalizationplate, aiming at the situation that a COB light source has the increasingly high heat radiating requirement in the increasingly small closed space, the improved heat-conducting temperature equalization plate has the better heat storage and heat-conducting effects, thus the temperature of the whole LED street lamp modulator tube is maintained to be uniform, and the service life of the single COB light source is not affected by the excessively high local temperature.

The invention provides a modified wood veneer, a modification method of the wood veneer, a wood veneer/stone plastic composite plate and a preparation method of the wood veneer/stone plastic compositeplate, and relates to the technical field of plates. The modified wood veneer comprises a wood veneer base material and polymethyl methacrylate which coats the surface of the wood veneer base material and/or permeates into the wood veneer base material. By utilizing the modified wood veneer, the technical problem that a wood veneer in the prior art is prone to moisture absorption and deformationcan be relieved, and the technical effect of improving the stability of the wood veneer can be achieved.

Provide is a ceramic slurry reverse-pouring grouting molding method. The method comprises the following steps that a grouting head of a slurry conveying pipe is arranged vertically and upwards, a grouting hole in the bottom of a plaster mold is in butt joint with a vertically upward grouting head in a sealed mode, a grouting fluid is made to be injected into a mold cavity of the plaster mold from bottom to top, a small air hole is formed in the top of the plaster mold, and an iron nail is inserted into the small air hole, wherein the iron nail enables ceramic slurry to be prevented from overflowing and can achieve air releasing; the ceramic slurry can be injected into the plaster mold through a high pressure grouting machine with pressure, before half of the mold cavity is filled with the slurry, the grouting pressure is controlled to range from 1 kg to 1.5 kg, and after half of the mold cavity is filled with the slurry, the pressure is weakened slowly till the mold cavity is filled up; the pressure is kept till a green body of the inner wall of the mold cavity reaches the needed thickness, the pressure is relieved, the iron nail on the top of the plaster mold is pulled out, the ceramic slurry flows out completely and freely, after the green body in the mold cavity of the mold is dried and shrinks, demolding is conducted finally, and when demolding is conducted, the small air hole left by the iron nail is filled with same dry ceramic.

The invention relates to a method of using irradiation technology to improve performance of rice paper. The method comprises the following steps: the rice paper is conducted with uniform irradiation by using irradiation radial. Irradiation dose is 0.1-100KGy. The method has the advantages of being quick in dealing speed and low in energy consumption. Ink embellishing of the rice paper can be improved quickly in a short time, deformation of the rice paper can be reduced and quality of the rice paper can be improved comprehensively.