41results about How to "Controllable hardness" patented technology

The invention provides a foaming composite for shoes and a preparation method of the foaming composite. The foaming composite for shoes is prepared from base stock, foaming agents, cross-linking agents, assistant crosslinker, activating agents and fillers. The total mass of the base stock is 100%, and 2%-10% of the foaming agents, 0.8%-3% of the cross-linking agents, 0.1%-2% of the assistant crosslinker, 1%-5% of the activating agents and 5%-50% of the fillers. The base stock is prepared from, by mass, 40%-90% of ethylene-octylene block copolymer, 5%-25% of ethylene-octylene random copolymer and 5%-35% of ethylene-vinyl acetate resin. The foaming composite for shoes is light in mass, high in rebound resilience, low in permanent compression deformation rate, low in cost, wide in application range and simple in preparation method. By means of the foaming composite for shoes, the technical problems that existing shoe soles are not resistant to wear or compression, poor in low-temperature toughness, poor in strength, prone to deformation, low in cost performance and the like are solved.

The invention discloses a method for producing a kind of stainless steel which is used for jet norm. It manufactures with cold-rolled stainless steel strip with a thickness of 1.0~1.5mm to achieve the stainless steel through semi-finished billets rolling, solution treatment, finished rolling, skim handling, degreasing and drying, straightening, and tensile stress annealing.

The present invention relates to a thermoplastic elastomer resin which has good melt viscosity, melt tension, and thermal resistance, wherein it is prepared by introducing a chain extender and a stabilizer for hydrolysis to a thermoplastic elastomer resin produced through melt polymerization in the presence of hydroxy carboxylic acid compound and subjecting the mixture to reactive extrusion to increase the molecular weight and crosslinking degree of the elastomer resin. The thermoplastic elastomer resin according to the present invention has good properties for automobile parts, particularly constant velocity joint boots and bellows.

The invention discloses a heat conduction silica gel gasket calendering line. The heat conduction silica gel gasket calendering line comprises a calendering machine. The right side of the front face of the calendering machine is fixedly connected with a treating agent gluing device. A lower film is fixedly connected to the part, located on the left side of the treating agent gluing device, of the front face of the calendering machine. The part, located on the top of the lower film, of the front face of the calendering machine is fixedly connected with a calendering device. The part, located on the left side of the calendering device, on the top of the calendering machine is provided with an upper film. The part, located on the right side of the calendering device, on the top of the calendering machine is provided with glass fiber cloth. The part, located on the left side of the calendering device, on the front face of the calendering machine is provided with a glue groove. The heat conduction silica gel gasket calendering line can completely replace a press vulcanizer and a manual glass die blade coating technology, the product production efficiency of an improved heat conduction silica gel gasket calendering machine is 3-4 times of the product production efficiency of the two previous kinds, produced products are controllable in softness and hardness, the thickness can be controlled, and the problem that softness, hardness and thickness of the products produced by the existing press vulcanizer and the manual glass die blade coating technology are not controllable, and consequently the production efficiency is low is solved.

The invention discloses a bean curd machine which can prevent a mesh screen lifting drive mechanism from polluting made bean curd in processes of separating soybean milk from soybean dregs and squeezing bean curd. The bean curd machine comprises a machine head, a soybean milk barrel and a mesh screen, wherein screw rods are vertically arranged on the outer side surface of the soybean milk barrel,an active magnetic coupling assembly capable of moving along each screw rod up and down is arranged on each screw rod, the lower end of each screw rod is connected with a synchronization wheel arranged on a bean curd machine bottom shell, the synchronization wheel is connected with a drive motor arranged below the soybean milk barrel through a synchronization belt, slave magnetic coupling assemblies are fixedly arranged on the side wall in the mesh screen and are arranged corresponding to the active magnetic coupling assembly. In the whole process of separating the soybean milk from the soybean dregs, lifting the mesh screen and taking bean curd out, parts in a drive mechanism can not be always in contact with bean curd jelly or bean curd in the mesh screen, thus the made bean curd is safe and sanitary and is controllable in softness or harness, ad the bean curd machine has the advantages of time-saving property, convenience for use, low cost, and capability of enabling people to enjoy the interest of making the bean curd per se.

The invention relates to a flexible dual-curing resin composition and a preparation method of a molded body of the flexible dual-curing resin composition. A, a polyurethane prepolymer; b, a nitrogen-containing heterocyclic acrylic acid compound; c. A chain extender; wherein the molar ratio of the-NCO group contained in the polyurethane prepolymer a to the nitrogen-containing heterocyclic acrylic acid compound b is 0.98-1.02, and the molar ratio of the-NCO group contained in the polyurethane prepolymer a to the-OH group contained in the chain extender c is 0.98-1.02. The composition disclosed by the invention can be used for preparing a molded product with relatively high precision and complexity, and the molded product obtained after light and heat dual curing has the characteristics of good molding effect, flexibility and comprehensive performance.

The invention provides a compound preparation of irbesartan hydrochlorothiazide and a preparation method thereof. The composite preparation comprises a tablet core, which includes the following ingredients (by weight): 150.0 parts of irbesartan, 12.5 parts of hydrochlorothiazide, 24.0-29.0 parts of microcrystalline cellulose, 10.0-17.0 parts of lactose monohydrate, 15.0-19.5 parts of croscarmellose sodium, 12.0-18.0 parts of hydroxypropyl methylcellulose, 8.0-11.0 parts of colloidal silicon dioxide and 7.0-9.0 parts of magnesium stearate. Compared with the equivalent weight of irbesartan and hydrochlorothiazide, microcrystalline cellulose and lactose monohydrate are also used as fillers in the tablet core of theinvention, and the sum of maximum total weights of microcrystalline cellulose and lactose monohydrate is less than 50, thus greatly reducing the amount of the fillers and lowering the material cost of the composite preparation; moreover, a proper amount of hydroxypropyl methylcellulose ensures the dissolution of the effective components.

This pearlite rail consists of a steel including: in terms of percent by mass, C: 0.65 to 1.20%; Si: 0.05 to 2.00%; Mn: 0.05 to 2.00%; P‰¤ 0.0150%; S‰¤ 0.0100%; Ca: 0.0005 to 0.0200%, and Fe and inevitable impurities as the balance, wherein a head surface portion which ranges from surfaces of head corner portions and a head top portion to a depth of 10 mm has a pearlite structure, a hardness Hv of the pearlite structure is in a range of 320 to 500, and Mn sulfide-based inclusions having major lengths in a range of 10 to 100 µm are present at an amount per unit area in a range of 10 to 200 / mm 2 in a cross-section taken along a lengthwise direction in the pearlite structure.

The invention discloses injectable chitosan / keratin composite hydrogel capable of promoting myocardium repair and a preparation method of the hydrogel. The hydrogel consists of four solutions, namely chitosan, sodium beta-glycerophosphate, genipin and keratin according to a volume ratio of 10: (1-5): (1-3): (0.1-0.5). The preparation method comprises the following steps: 1) extracting keratin from human fairs by using peracetic acid and Tris alkaline; 2) adjusting the pH value of a water-soluble chitosan solution by using sodium beta-glycerophosphate so as to be close to a microenvironment in a human body; 3) introducing genipin as a crosslinking agent, and controlling the gelling time of a hydrogel solution by changing the use amount of the genipin so as to achieve the purpose that the mixed solution can be rapidly gelled in situ after being injected into an organism. Experiments prove that the composite hydrogel has favorable biocompatibility and has the capability of remarkably promoting the growth of myocardial cells; the hydrogel is wide in sources of materials and low in cost and has a broad application prospect in the field of tissue engineering repair.

A preparation method for an organosilicon nano-protective coating having a modulation structure, belonging to the field of plasma technology. In the method, the vacuum degree within a reaction chamber is adjusted, an inert gas is introduced, a base material is caused to move, and organosilicon coating preparation and organic fluorocarbon coating preparation are performed alternately to form an organosilicon-fluorocarbon modulation multi-layer compact structure. An organosilicon monomer vapour component is a mixture of at least one organosilicon monomer containing a double bond, Si-Cl, Si-O-C, Si-N-Si or Si-O-Si structure or an annular structure and at least one polyfunctional unsaturated hydrocarbon or hydrocarbon derivative. The formed organosilicon-fluorocarbon modulation multi-layer compact structure reduces coating stress and increases coating toughness. Lateral interfaces are present between the organosilicon and the fluorocarbon, corrosive media encounter the lateral interfaces during corrosion of the coating, and corrosion develops laterally, so that longitudinal corrosion which penetrates the coating is not prone to forming, thereby preventing the corrosive media from passing through the coating and corroding protected materials and devices.

The invention relates to a process for preparing a polyurethane powder adhesive by utilizing a polyurethane prepolymer reversed phase suspension polymerization method. The process comprises the steps that diamine and a compound chain extender are added into an inert oil phase, and a water-in-oil dispersing system is formed under heating and stirring in a water bath; a polyurethane prepolymer and a waterborne polyurethane hardening agent are sequentially and dropwise added for polymerization reaction, and a powdery polyurethane adhesive can be obtained through filtration and drying. The process has the advantages that oil-phase liquid obtained through filtration can be cyclically used and is economic and environmentally friendly, and the preparation time is shortened. The process route is convenient and easy to operate, the polyurethane powder adhesive can meet the requirements of adhesives in multiple fields, and large-scale production is hopeful in the future.

The invention discloses hard alloy. The hard alloy comprises 5-10wt% of cobalt, 0.5-1.5wt% of chromium carbide and the balance tungsten carbide, wherein tungsten carbide comprises non-flaky tungsten carbide grains and flaky crystal tungsten carbide, and flaky crystal tungsten carbide accounts for 18-40wt% of the total mass of the hard alloy. Since the hard alloy contains flaky crystal tungsten carbide in an appropriate quantity, adhesive wear resistance of the alloy can be remarkably improved, and applying the hard alloy to roll collars for stainless steel wire rolling can realize a 30% raiseof stainless steel wire rolling tonnage.