56results about How to "Improve fragility" patented technology

An airbag device includes an airbag folded into a shape having a base portion, an upper surface opposite the base portion, and a side portion surrounding a portion between the base portion and the upper surface, and a holding member configured to cover the airbag as folded by being laid over the airbag as folded. The holding member has a plurality of cloth piece portions and a single connection portion connecting the plurality of cloth piece portions to one another. The connection portion of the holding member is located at the upper surface of the airbag as folded.

The invention relates to a preparing method of metal soft magnetic iron silicon aluminum alloy powder, and belongs to the technical field of metal soft magnetic material manufacturing. The preparing method comprises the steps that a furnace burden pure iron square billet, bulk metal silicon and a pure aluminum ingot are used as raw materials, and the raw materials are weighed according to the proportion; a non-vacuum medium-frequency induction furnace is used to induce, smelt and obtain alloy molten steel of the required components, and an alloy ingot is obtained after casting; the alloy ingotis crushed, and then a particle material with the particle size being below 5 mm is obtained; then fine powder of 180 meshes is obtained through a crushing ball mill technology; and finally, the ironsilicon aluminum alloy powder is obtained through annealing of 800-850 DEG C under nitrogen atmosphere and even mixing. The particle size distribution of the iron silicon aluminum alloy powder prepared by the method is narrow and adjustable, the shape of the powder is in a regular polygon, sharp corners are few, the effect of insulating coating is ensured advantageously, and the comprehensive magnetic properties of an iron silicon aluminum magnetic powder core after forming and pressing and sintering are excellent.

The invention relates to hordeum Vulgare L. var. nudum Hook. F nutritive coarse cereal instant noodles and a processing method thereof. In accordance with problems in the prior art, hordeum Vulgare L.var. nudum Hook. F is used as a main raw material, millet, whole potato flour and chenopodium quinoa willd are added to fill amino acids limited by the hordeum Vulgare L. var. nudum Hook. F, and thenutritive coarse cereal instant noodles based on the hordeum Vulgare L. var. nudum Hook. F are in continuous industrial production through performing vacuum dough mixing and compounding a starch modifier. The nutritive coarse cereal instant noodles based on the hordeum Vulgare L. var. nudum Hook. F made by the processing method disclosed by the invention have rich fragrance of the hordeum VulgareL. var. nudum Hook. F, and good mouth feel, sense evaluation is greater than or equal to 80 scores, the moisture content is smaller than or equal to 11%, the rehydration rate is greater than or equalto 1.6, and the rehydration time is 4-6min; a functional factor in the hordeum Vulgare L. var. nudum Hook. F, namely beta-glucan is reserved for 85% or above; through the processing of the raw material of the hordeum Vulgare L. var. nudum Hook. F, beta-glucanase is deactivated, so that the functional component in the hordeum Vulgare L. var. nudum Hook. F, namely the beta-glucan is reserved to themaximum extent; through the developed starch modifier, the gluten content of pure hordeum Vulgare L. var. nudum Hook. F dough can be improved, the porosity of a gluten net of the dough can be reduced,the forming of hordeum Vulgare L. var. nudum Hook. F cakes can be improved, the mouth feel of the hordeum Vulgare L. var. nudum Hook. F nutritive coarse cereal instant noodles can be improved, and the quality of the products can be improved.

The invention related to hyaluronic derivative according to formula (I), methods of preparation thereof and a hydrogel prepared obtained from the derivative and methods of preparation thereof. The hydrogel can be used in tissue engineering, cosmetics, medicine or regenerative medicine such as the forming of scaffolds for the treatment of articular cartilage or bone tissue defects.

The invention discloses an electronic seal protection method based on a fragile watermark, which includes the following steps: 1, scanning an original seal image to a computer; 2, setting a mapping function f, enabling each pixel value of the image g obtained by scanning an original seal to be mapped into a two-value L, L (i, j) = fg (g (i, j)), wherein a value of the L is 0 or 1, and i and j are coordinates of image pixel points; and 3, embedding a watermark W in the seal scanning image g, wherein sigma is a positive integer which is as small as possible in a following formula. Each pixel value of the image g obtained by scanning the original seal is modified so as to enable a value of each pixel point in the modified image g to be the same as W after the value is calculated through the mapping function f. The electronic seal protection method based on the fragile watermark meets requirements of occasions which are hypersensitive to embedded images, and guarantees that as long as one pixel in a pattern embedded by a watermark is changed, the watermark can be damaged, thereby achieving verification and protection effects.

Segments formed on a wiring substrate are arranged in a staggered array, and tie bars are provided between the segments.

The invention relates to a preparing method of metal soft magnetic iron silicon aluminum alloy powder, and belongs to the technical field of metal soft magnetic material manufacturing. The preparing method comprises the steps that a furnace burden pure iron square billet, bulk metal silicon and a pure aluminum ingot are used as raw materials, and the raw materials are weighed according to the proportion; a non-vacuum medium-frequency induction furnace is used to induce, smelt and obtain alloy molten steel of the required components, and an alloy ingot is obtained after casting; the alloy ingotis crushed, and then a particle material with the particle size being below 5 mm is obtained; then fine powder of 180 meshes is obtained through a crushing ball mill technology; and finally, the ironsilicon aluminum alloy powder is obtained through annealing of 800-850 DEG C under nitrogen atmosphere and even mixing. The particle size distribution of the iron silicon aluminum alloy powder prepared by the method is narrow and adjustable, the shape of the powder is in a regular polygon, sharp corners are few, the effect of insulating coating is ensured advantageously, and the comprehensive magnetic properties of an iron silicon aluminum magnetic powder core after forming and pressing and sintering are excellent.

The present invention relates to a halogen-free thermosetting resin composition, a prepreg and a laminate for printed circuit boards using the same. The halogen-free thermosetting resin composition comprises, based on 100 parts by weight of organic solids, (A) from 16 to 42 parts by weight of a halogen-free epoxy resin, (B) from 1.5 to 4.8 parts by weight of a compound containing dihydrobenzoxazine ring; (C) from 10 to 28 parts by weight of a phosphorus-containing bisphenol curing agent, wherein the phosphorus-containing bisphenol curing agent has a weight average molecular weight of 1000-6500, and (D) from 30 to 70 parts by weight of silicon dioxide. The prepreg and laminate for printed circuit boards prepared from the halogen-free thermosetting resin composition have high glass transition temperature, excellent dielectric performances, low water absorption, high heat resistance and better processability, and can achieve halogen-free flame retardancy and UL94 V-0.

The invention relates to the field of foam boards, and particularly discloses a preparation method of a foam board with uniform plasmids, which comprises the following steps: step 1, melting polyethylene resin, adding magnesium hydroxide composite agglomerated particles, and then extruding and granulating to obtain modified polyethylene particles; step 2, mixing and homogenizing the modified polyethylene particles prepared in the step 1 with a silane coupling agent, a foaming agent and a binder, and under circulation purging of nitrogen, adopting a vacuum heating mode and a positive pressure heating mode to circularly and alternately react for foaming to obtain a dry composite material; the foaming agent comprises tetrahydrofurfuryl alcohol, sodium dioctyl sulfosuccinate and sodium bicarbonate; and step 3, adding dimethylsilylated silica into the composite material, performing maintenance, and then performing curing molding to obtain the foam board. By adopting the preparation method provided by the invention, the fragile rate and breakage rate of the packaging plate after collision or falling in the transportation process can be effectively reduced, and the comprehensive performance of the foam plate is good.

The invention relates to a paper substrate radio frequency antenna and a production method thereof, and belongs to the technical field of radio frequency identification. The method comprises the following steps: (1) laminating: heating a plastic material, melting the plastic material into liquid, coating the surface of a paper substrate with the liquid, cooling, and curing to form a laminated layer; and coating two sides of the paper base material with films. (2) end surface waterproofing: coating the edge end surface of the paper base material with a waterproof material after film spraying; (3) compounding a metal film layer: coating the surface of the lamination layer with a compound adhesive layer and compounding the metal film layer; (4) printing protective gloss oil: printing protective gloss oil on the surface of the metal film layer; and (5) etching the antenna. According to the invention, the production cost of the antenna is reduced, and the environmental pollution caused by electronic tag products is reduced.

The invention relates to a circulating grinding cement vertical mill with a preheating grinding function, which is used for grinding cement materials, wherein the circulating grinding cement vertical mill with a preheating grinding function comprises: a cylinder body with an accommodating space; a conveying device for It is used to convey cement materials; the crushing device is connected with the conveying device, and the crushing device is used to crush cement materials; the feeding pipe, the feeding port is connected with the crushing device, and the discharge port of the feeding pipe passes through the cylinder and is set in the accommodation space The material distributing device is arranged in the accommodating space. The material distributing device includes a curved mesh structure recessed downward and a material guide cone arranged at the top of the center of the curved mesh structure. The curved mesh structure is arranged at the outlet of the feeding pipe. The bottom of the feed port, and the top of the guide cone is located directly below the discharge port of the feed pipe. When the cement material is ground in the present invention, the cement material is firstly preheated to ensure that the cement material has a certain degree of brittleness during grinding, and its brittleness is better when it is ground, thereby improving the grinding efficiency.

The invention discloses a method for optimizing chip friability based on response surface modeling. First, the chip friability is evaluated, and the chip friability index C is calculated. in ; then modeled by response surface method RSM, and chip friability is optimized. The matching model between cutting parameters and chip friability was successfully established, and the optimal solution consistent with the experimental results was obtained, chip friability was optimized, and the calculation was accurate, which improved processing efficiency and processing safety and reduced processing time. cost, so that the quality of the obtained product is higher.