122results about How to "Shrinkage control" patented technology

Stents and methods of using stents are provided. Stents of the invention provide external support structure for a blood vessel segment disposed within, wherein the stents are capable of resilient radial expansion in a manner mimicking the compliance properties of an artery. The stent may be formed of a knitted or braided mesh formed so as to provide the needed compliance properties. A venous graft with the stent and a vein segment disposed within is provided, wherein graft is capable of mimicking the compliance properties of an artery. Methods of selecting stents for downsizing and methods of using the stents of the invention in downsizing and smoothening are provided. Methods of replacing a section of an artery with a venous graft including a stent of the invention are provided. Methods of reducing intimal hyperplasia in implanted vein segment in a venous graft using stents of the invention are provided.

The invention provides single-component t high-performance mortar for repairing and reinforcing concrete, which comprises the following components in part by mass: 200g of sand, 55 to 75 parts of ordinary portland cement, 10 to 30 parts of sulphate aluminium cement, 3 to 7 parts of siliceous dust, 8 to 12 parts of flyash, 0.18 to 0.22 part of water reducing agent, 2 to 4 parts of flexibilizer, 0.04 to 0.06 part of water-retaining agent, 1.0 to 2.0 parts of swelling agent and 0.1 to 0.2 part of polymer synthetic fiber. The single-component t high-performance mortar has the advantages of high initial strength, good adhesion, excellent cracking resistance, low ratio of compressive strength to flexural strength, excellent toughness, simple and convenient construction, single component, no toxin or smell, no harm to human bodies, and environmental protection without pollution.

The invention relates to a granular material for 3D binder printing, said granular material consisting of particles provided with an externally non-polar surface layer (2). The invention also relates to a method for producing a granular material for 3D binder printing, whereby a surface layer (2) having a non-polar outer side is applied to initial particles (1), and to a method for producing an object consisting of the inventive granular material, according to which a layer of the inventive granular material is applied to a base, and pre-determined regions (3) of said layer are moistened with a binding fluid, said binding fluid being selected from fluids in which a surface layer of the particles of the granular material is soluble. The invention further realties to objects consisting of interconnected particles of the inventive granular material. The invention enables a very precise printing process.

The invention discloses a special thin anti-crack plastering mortar for autoclaved aerated concrete and belongs to the technical field of building materials. According to the special thin anti-crack plastering mortar disclosed by the invention, a dry material is added with water by a mass ratio that water to dry material ratio is equal to 1:4, and then stirred for 3-5 minutes to prepare mortar, wherein the dry material consists of the following components in mass by percentage: 20%-35% of cement, 10%-30% of 40-70-mesh quartz sand, 30%-50% of 80-100-mesh quartz sand, 2%-7% of 200-mesh coarse whiting powder, 1.5%-4% of redispersible emulsion powder; 0.15%-0.5% of water-retaining agent; 0.2%-0.7% of wood fiber and 0.11%-0.45% of short fiber. Being prepared by adopting quartz sand of 40-70 meshes or 80-100 meshes, the special thin anti-crack plastering mortar for the autoclaved aerated concrete disclosed by the invention has an excellent anti-crack performance, realizes effective control on contraction percentage of the mortar, causes no cracks during large-area construction, achieves good caking property, and realizes organic combination between the mortar and the surface layer of the autoclaved aerated concrete.

The present invention provides a polarizer and a polarizing plate having less dimensional changes to heat stress. The present invention provides also a liquid crystal display that includes the polarizer and the polarizing plate, and is free of color irregularity or decoloration. The polarizer has shrinkage force of not more than 4.0 N/cm in the absorption axis direction after being heated at 80° C. for 30 minutes. A protective film is laminated on at least one surface of the polarizer in order to form a polarizing plate, and the polarizing plate has a following relationship of 0.01≦A/B≦0.16 when A denotes a thickness of the polarizer and B denotes a thickness of the protective film.

The invention relates to a plug salt corn of engine and relative production, wherein it is formed by 70-80% soluble metal salt and 20-30% findings; the salt grainness can reach 60-120 deals; the finding grainness should at least reach 200 deals. And the production comprises that: first breaking metal salt and findings into needed grainness, mixing them, putting some into powder compressing mould to obtain the blank; then putting blank into furnace to be baked; then processing the positioning hole. The inventive salt corn has high strength, while it can be washed by water.

Supported thin film membranes of ceramic materials and electrochemical cells including supported thin film membranes. The microstructure of the support is particularly well suited for the well suited for subsequent infiltration with electrochemically active species (as solutions, slurries, or salts) to enhance chemical or electrical transport to the membrane and maintains satisfactory gas flow to the membrane after infiltration. This invention may be useful in electrochemical separations or catalytic reactors including, but not limited to, solid oxide fuel cells and oxygen separation membranes.

The invention discloses a polypropylene fiber reinforced inorganic polymer composite material and a preparation method thereof. Polypropylene beam-like monofilament fiber and sodium silicate are added in slag, and the mixture is excited by the sodium silicate to prepare the composite material; the adding amount of the polypropylene beam-like monofilament fiber is 0.024 to 0.06 percent of the weight of the slag; and the adding amount of sodium silicate is 11 percent of the weight of the slag. The preparation method comprises the following steps: dispersing the polypropylene beam-like monofilament fiber in the formula ratio in the slag at the room temperature; putting the mixture in a double-rotation double-speed purified paste stirrer for stirring; adding a water solution of sodium silicate in the mixture and evenly stirring the mixture to form an evenly mixed paste, wherein the ratio of water to the slag is 0.31; and forming the paste , putting the paste in a standard curing box for curing, and testing the compressive strength and the flexural strength of the paste. Compared with the slag inorganic polymer, the maximum flexural strength of the composite material at 28d is increased by 5.4 MPa, and the maximum compressive strength of the composite material at 28dis increased by 17.7 MPa. The preparation process has the advantages of easy operation, unnecessary heating and no three-waste emission, so the preparation process is a green preparation process.

A process is described for transferring a photoresist pattern into a substrate. In one embodiment a stack comprised of a top photoresist layer, a middle ARC layer, and a bottom hardmask is formed over a gate electrode layer. A line in the photoresist pattern is anisotropically transferred through the ARC and hardmask. Then an isotropic etch to trim the linewidth by 0 to 50 nm per edge is performed simultaneously on the photoresist, ARC and hardmask. This method minimizes the amount of line end shortening to less than three times the dimension trimmed from one line edge. Since a majority of the photoresist layer is retained, the starting photoresist thickness can be reduced by 1000 Angstroms or more to increase process window. The pattern is then etched through the underlying layer to form a gate electrode. The method can also be used to form STI features in a substrate.

An apparatus and a process for producing a laminate for electronic parts such as ceramic capacitors. After a predetermined pattern for forming an internal conductive layer is formed on a self-supporting green sheet which contains inorganic powder and an organic binder, the self-supporting green sheet is taken up by a columnar roll and laminated. At this point, the position of the same pattern on the green sheet G2 of the next cycle to be laminated adjacently onto the green sheet G1 of the previous cycle as the above pattern with respect to the predetermined pattern on the green sheet G1 taken up by the columnar roll is determined.

The invention discloses a coal blending method for controlling degree of shrinkage of coal as fired in a large coke oven with a wide coking chamber, comprising the following steps: making statistics on the degree of shrinkage of the blended coal in the existing coke ovens with 6m-high coking chambers and computing the average value of the degree of shrinkage of the blended coal in the 6m coke ovens according to the statistic of the degree of shrinkage of the blended coal in the 6m coke ovens; computing the range of the degree of shrinkage of the blended coal in the large coke oven with the wide coking chamber; and correspondingly increasing the blending proportion of the coking coal with high degree of shrinkage for blending coal according to the computed range of the degree of shrinkage of the blended coal in the large coke oven with the wide coking chamber, measuring the degree of shrinkage of the obtained blended coal, if the degree of shrinkage is within the control range, determining the coal blending scheme to blend coal for coking, if the degree of shrinkage is not in the control range, correspondingly increasing or decreasing the blending proportion of the coking coal withhigh degree of shrinkage, blending coal and detecting the degree of shrinkage until the measured value of the degree of shrinkage of the blended coal in the obtained coal blending scheme is within the control range, thus obtaining the coal blending scheme for the large coke oven with the wide coking chamber. The method can ensure the blended coal to have reasonable degree of shrinkage in the large wide coking chamber and the coking process, thus improving the quality of the coke.

The invention discloses a production process of a tubular seersucker shell fabric. The technical process is as follows: yarn spinning, dyeing, warping, slashing, weaving and post-treatment. The post-treatment comprises the steps: singeing, loose type washing, loose type sizing and pre-shrinking. According to the production process, in a loose type drying process, the shell fabric is subjected to resin finishing; one-step loose type finishing is carried out on the shell fabric by a low-temperature resin finishing solution so that the inner stress of the shell fabric is eliminated, the aim of controlling the shrinkage rate is realized, and the textile shape and the size stability are improved.

The invention belongs to the field of oral materials, in particular relates to a sintering process for rapidly preparing a zirconia ceramic block with uniform strength and color transition, and in particular relates to a high-toughness zirconia ceramic block, and the powder formula of the zirconia ceramic block comprises 1.5 to 12% of yttrium oxide, 0 to 2.5% of silicon carbide nano whiskers, 0 to1.5% of a coloring matter and the balance of zirconium oxide according to the mass fraction. Based on the ceramic block, the multilayer zirconia ceramic block with uniform transition of comprehensivemechanical properties, color and permeability is provided. At the same time, a process capable of completing the sintering of the zirconia ceramic block with high efficiency and high quality is provided. By using the process, the zirconia ceramic block with excellent comprehensive mechanical properties and uniform color and permeability transition can be obtained in as short a time as possible.

The invention discloses a warp-knitting dacron short pile fabric and a weaving method thereof, and belongs to the technical field of warp-kitting fabric weaving. 50-75D of dacron FDY and dacron DTY composite filaments are adopted as pile yarn, 50D/24F of polyester silk FDY or polyester silk DTY is adopted as bottom yarn, a two-comb or three-comb Tricot warp knitting machine conducts weaving to obtain gray fabric, then the procedures of pre-shaping, fuzzing process implementation, dyeing, drying, hot trimming and burnt-out are carried out, and after dehydration and drying for shaping are conducted, checking and packaging are carried out. By means of a chemical treatment method for dacron fibers, the effect of forming a three-dimensional pattern diversified in color and different in shape onthe fuzzing surface of the fabric is achieved, the gram weight of the fabric is low, and the fabric has better heat preservation performance and higher comfort degree.

The invention belongs to the field of oral cavity materials and particularly relates to a layered zirconia porcelain block technology with even contraction of all layers. By adopting the technical scheme, according to the required colors, the component and content of zirconia powder formulas of all the layers are determined, and zirconia porcelain blocks of all the layers comprise shallowest layers, transition layers and deepest layers; according to the content of yttria in all the formulas, the particle diameter distribution of zirconia and yttria in the shallowest layers and the deepest layers is adjusted, so that it is guaranteed that the contraction rate diversity factor of the shallowest layers and the deepest layers after sintering is smaller than 0.3%; the adjusted shallowest layersand deepest layers are evenly mixed to obtain the transition layers; the shallowest layers, transition layers and deepest layers are placed layer by layer according to the color shade sequence and subjected to isostatic pressing, pre-sintering and high-temperature sintering, and preparation is completed. By adopting the technical scheme, the layered zirconia porcelain block with natural colors, natural penetrability transition and a basically-constant contraction rate can be obtained.