111results about How to "Guaranteed resilience" patented technology

The invention discloses a thrombus elasticity testing device. The thrombus elasticity testing device comprises a supporting plate, a measuring unit, a driving unit and a cup holding unit, wherein the measuring unit and the driving unit are arranged on the supporting plate, and the cup holding unit is connected with the driving unit; the measuring unit comprises a base, a rotating part, a rotating shaft and a balance spring. According to the thrombus elasticity testing device, the driving unit is combined with the cup holding unit to carry out regular vibration on a blood sample in a measuring cup to simulate a physiological thrombus formation environment in vivo, thereby guaranteeing an accurate and reliable test result; by virtue of a structure consisting of the conical tip-shaped rotating shaft and the balance spring in the measuring unit, friction generated during vibration of the measuring unit is decreased sharply, and the shock resistance of the complete device is greatly improved on the premise of guaranteeing restoring force, so that the measurement reliability is high; by virtue of an optical lever measuring mechanism, the resolving ability and sensitivity of thrombus elasticity measurement are effectively increased, so that the measuring accuracy is remarkably improved; by virtue of a measuring cup loading-unloading mechanism, the operation is convenient and reliable.

The invention relates to a permanent antistatic flame-retardant polyamide-6 bulked continuous filament textured carpet yarn and a preparation method. The permanent antistatic flame-retardant polyamide-6 bulked continuous filament textured carpet yarn comprises a carpet yarn body, wherein the carpet yarn body consists of two tows of flame-retardant polyamide-6 bulked continuous filaments in different colors or the same color and a tow of antistatic polyamide-6 bulked continuous filaments; single fibers in the three tows of polyamide-6 bulked continuous filaments are random three-dimensional crimped fibers; different types of fibers are randomly mixed and intertwined; and periodical net knots are arranged on the surface of the carpet yarn body. The preparation method is implemented by one step through a tri-screw bulked continuous filament (BCF) spinning machine set. The product substantially maintains the characteristics of abrasion resistance, stain resistance, resilience and the like of polyamide-6, and also has a permanent antistatic function and a flame-retardant function. According to the preparation method, the characteristics of a production process of the tri-screw BCF spinning machine set are utilized, so that the aim of spinning the antistatic flame-retardant polyamide-6 textured carpet yarn by one step is fulfilled, and the production process is simple, practical and efficient.

The invention discloses formaldehyde-free cementing compound for a profiled artificial board and a preparation method thereof. The preparation method comprises the following steps that: a composition A is firstly prepared: appropriate water is added into a reaction kettle with a stirring device, polyvinyl alcohol is slowly added when the water is heated to 30 DEG C, and the temperature is increased to 90 DEG C, so the polyvinyl alcohol is completely dissolved, and the temperature is preserved for one hour; then the raw materials are cooled down to 50 DEG C; synthesized liquid is added, and dispersant, emulsifier, defoaming agent and anticorrosion sterilizing agent are then added and stirred for 10 to 15 minutes; then stuffing is added and is dispersed for 45 to 60 minutes at a high speed, so all raw materials are uniformly mixed, and the mixture is filtered to obtain the composition A; and when in use, the composition A is coated after being uniformly mixed with a composition B according to a stipulated weight part. The production technique is simple, the adhesion strength can be improved, the elasticity property can be guaranteed, the product quality can be improved, no toxic substance such as formaldehyde, benzene, methylbenzene, dimethylbenzene and the like is contained, and no toxicity, no harm and environmental friendliness can be completely realized.

The invention relates to a preparation method of a cationic dyeable PTT, the preparation method sequentially comprises the first esterification reaction: 1,3-propanediol and terephthalic acid are added in a reactor according to a certain proportion, an esterification catalyst and an auxiliary agent are simultaneously added, the temperature is increased to 220-260 DEG C, and the reaction is finished till the esterification outlet water; the second esterification reaction: mixed slurry of dicarboxylic acid and 1,3-propanediol is added in the reactor, the temperature is increased to 220-260 DEG C for carrying out the second esterification reaction till the esterification outlet water, a polymerized monomer is obtained after the reaction is finished; the polymerization reaction: the polymerized monomer, the 1,3-propanediol solution of 5-sodium sulfonate dimethyl isophthalate, a flexible chain segment component, a polymerization catalyst and a stabilizer are sequentially added in the polymerization reactor, and the conventional polymerization is carried out under the conditions that the pressure is less than or equal to 40Pa and the temperature is 240-280 DEG C. The cationic dyeable PTT which is obtained by the method simultaneously has good rebound resilience and good cationic dye dyeable function under normal pressure.

The invention relates to a flat acrylic fiber and a production method thereof. The flat acrylic fiber consists of the following components in percentage by weight: 91-94 percent of acrylonitrile and 6-9 percent of vinyl acetate, wherein the length-width ratio of the flat acrylic fiber is (2-13):1. The method for producing the flat acrylic fiber comprises the following steps: carrying out copolymerization reaction on the acrylonitrile and the vinyl acetate to prepare dried polyacrylonitrile powder, dissolving the powder in a solvent to form a stock solution, extruding from a rectangular hole of a spinneret plate after heating, and performing double diffusion to form a nascent fiber in a coagulating bath; washing the nascent fiber by water, and drawing the fiber through a drawing machine; oiling tows; and drying the tows and setting, so as to obtain the flat acrylic fiber. The contents of the acrylonitrile and the vinyl acetate in a copolymer, the molecular weight of the copolymer and a specific process flow are adjusted, so that the prepared flat acrylic fiber is good in handfeel, the softness and handfeel of the fiber can be improved, the rebound resilience, hydrophobicity and spinnability of the fiber can be guaranteed, and the acrylic fiber is easy to color.

This invention provides an articulated wrench, comprising: a box end; a handle; a fastening device passing through the through holes of the box end and handle; and a flexed spring disc. The fastening device has a head and a shank, wherein the head gradually expands outwards from the shank to form a flared angle having a tapering angle less than 45°. The flexed spring disc is provided in the indent of the box end and flexed along a diameter thereof to form a curvature.

The invention provides a plug connector and a casing assembly thereof. The plug connector comprises a casing assembly, the casing assembly comprises an outer casing and a casing part which is inserted into the outer casing in the back and forth direction, the interior of the outer casing is provided with an anti-drop stopping structure which is used for stopping the casing part in the back and forth direction in order to prevent the casing part from dropping from the outer casing, the interior of the casing part is provided with a plug contact, and the casing part and the outer casing achieve positioning and plug-in mounting through a casing key-groove mating structure extending in front-back direction. With respect to the plug connector, the casing part and the outer casing achieve positioning and plug-in mounting through the key-groove mating structure, during the plug-in mounting process, the mating area of the mounting surface is reduced, the precision demand on the mounting surface is reduced, and the relative sliding friction force generated in the plug-in mounting process is also reduced.

The invention discloses a comprehensive stress-resistant flounder screening method. The method comprises culture system preparation and comprises the steps of detecting a culture environment, and checking whether or not the environment accords with a pre-set environment index; after the environment is checked to be qualified, placing juvenile fishes and adult fishes for breeding into the culture system; utilizing a fishing net capturing method to regularly screen the juvenile fishes for culture; utilizing a fishing net capturing and limiting method to screen the adult fishes for breeding for the first time; then conducting further feeding behavior screening; selecting fishes with a high condition factor in screened lively and healthy parent fishes as parent fishes for breeding. According to the comprehensive stress-resistant flounder screening method, by utilizing the stress physiological property of flounders for capturing, fishing net limiting and bait throwing and the theory that appetite recovery is closely related to disease infection stress after stress and by adopting the method of repeated screening and weeding out weak individuals, stress-resistant flounder individuals with strong appetite are screened from common flounder fry and the parent fishes for breeding group, the flounder fry and the parent fishes for breeding group keep healthy, and the culture yield and thesurvival rate of offspring are increased.

The invention discloses a novel rubber seal ring for an explosion-proof motor, and belongs to the technical field of sealing rings. The rubber seal ring is characterized by comprising the following raw materials in parts by weight: 45-55 parts of neoprene, 10-20 parts of EPDM rubber, 4-6 parts of sulfidation system, 5-10 parts of a coldproof soften flux, 12-18 parts of a reinforcing agent, 5-10 parts of a coldproof assistant, and 2-5 parts of an ozone proof assistant. The rubber seal ring has the advantages that the rubber seal ring is high in ozone resistance, good in low temperature resistant performance, and reliable in sealing; the abrasion resistant capability is reinforced greatly; the product quality is more stable; the service life is prolonged by 200% to rubber seal rings for explosion-proof motors in the prior art.

The invention relates to an elastic fiber fabric solution, belonging to the technical field of special woven fabrics. The solution comprises the following compositions in percentage by weight: 88% of N,N-dimethylformamide, 2% of dibutyltin dilaurate, and 10% of mineral oil. The solution and sodium alginate paste are mixed for use. By applying the technical scheme in the printing process of the elastic blended fabric, the elastic fiber dissolved fabric which is excellent in breathability, uniform in color, regular in patterns, and good in three-dimensional effect can be obtained.

The invention discloses a preparation method for polyamide imide foam and belongs to the field of polymer synthesis methods. The preparation method comprises the following steps: adding diisocyanate,trimellitic anhydride, aromatic dianhydride and catalyst into a reaction kettle, heating the reaction kettle and then reacting while stirring at a constant temperature, thereby acquiring a prepolymer;pouring out the prepolymer, cooling down and utilizing a grinder to grind the cooled prepolymer into a foam precursor; spreading the foam precursor in a mould; foaming at high temperature to performclosed-loop curing, standing and naturally cooling to room temperature, and then de-molding, thereby acquiring the polyamide imide foam material. The polyamide imide foam material prepared according to the invention has the characteristics of high/low temperature resistance of polyimide, fire resistance and high strength of polyamide, and is low in cost. The foaming technology for generating CO2 from self-reaction without dissolvent reaction is capable of boosting the popularization and application of the polyamide imide foam in more fields.

The invention discloses a suspended split-mounting-type LED screen professional sport floor which comprises lattice outer covers, circuit board machine shells, supporting aluminum supporting plates, mounting bases, positioning modules and supporting buffer modules, and the four corners of the positioning module are connected with splicing ends, and the supporting buffer modules are connected belowthe splicing ends, the mounting bases are disposed above the positioning modules, and the supporting aluminum supporting plates sleeve the tops of the mounting bases. The circuit board machine shellsare evenly placed above the supporting aluminum supporting plates, and the lattice outer covers sleeve the tops of the circuit board machine shells. According to the suspended split-mounting-type LEDscreen professional sport floor, a non-slip surface with professional sport certification is arranged on each of the lattice outer covers, after the local surface of the non-slip outer cover of the surface of a ball park is worn, and the worn outer cover is quickly disassembled and replaced, the operation of a whole event is not hindered, the worn outer cover can be reused after being repaired, so that the maintenance cost of the device is effectively reduced, and the actual promotion of the device is facilitated.

The invention provides a horizontal refrigerator door seal and a horizontal refrigerator. The door seal is not prone to deforming, good in rebound resilience and reliable in sealing, reserved gaps are not prone to appearing on the periphery of a horizontal refrigerator door with the door seal, and the sealing and heat insulation effect is good. The horizontal refrigerator door seal comprises a mounting fixing part and a sealing part. The mounting fixing part and the sealing part are of an integrated structure, and the mounting fixing part is located above the sealing part. The sealing part is provided with a sealing air chamber. A supporting air chamber, a rebound air chamber and supporting ribs are arranged in the sealing air chamber. One end of each supporting rib is connected to the upper side face of the sealing air chamber, and the other end of each supporting rib is connected to the rebound air chamber. When the door is closed under the action of gravity to extrude a door seal strip, the supporting force of the door seal can be improved through the supporting air chamber, and the situation that the door seal excessively deforms due to the too heavy door is avoided; the rebound air chamber guarantees the rebound resilience of the door seal; and the supporting ribs achieve the supporting function and the rebound function, it is further guaranteed that the door seal keeps the basic shape within the deformation range, and the sealing and heat insulation effect of the door seal is good.

The invention discloses antibacterial and deodorant hot-air non-woven fabric and a preparation method thereof. The antibacterial and deodorant hot-air non-woven fabric is prepared from the following raw materials in parts by weight: 75-85 parts of polypropylene, 6-8 parts of an ethylene-propylene copolymer, 13-18 parts of metallocene linear low density polyethylene, 3-5 parts of maleic anhydride grafted polypropylene, 3-5 parts of an ethylene-vinyl acetate copolymer, 2.3-2.5 parts of an antibacterial agent and 5-7 parts of an inorganic carrier. The antibacterial and deodorant hot-air non-wovenfabric has a good antibacterial effect, the antibacterial effect is lasting, and the antibacterial and deodorant hot-air non-woven fabric has a good antibacterial effect on various bacteria such as escherichia coli, staphylococcus aureus and candida albicans; a good deodorization effect is achieved; breaking strength and bursting strength are large, and durability is achieved; the resilience is moderate, the softness is good, and the texture is good; and the comprehensive use performance is good, and the market application prospect is wide.

The invention discloses a high-temperature-resistant and corrosion-resistant solar silica gel plate and a preparation method thereof, and particularly relates to the technical field of solar silica gel plates, and the high-temperature-resistant and corrosion-resistant solar silica gel plate comprises dimethyl silica gel, white carbon black, hydroxyl silicone oil, a temperature-resistant agent, polyimide fibers and an organic solvent. The acid and alkali resistance of the high-temperature-resistant and corrosion-resistant solar silica gel plate can be effectively improved, the high-temperature-resistant and corrosion-resistant solar silica gel plate can be used under acid and alkali conditions for a long time, the hardening and embrittlement problems cannot occur, and the service life is guaranteed; the temperature-resistant agent in the formula can realize composite modification treatment on the silica gel material and the polyimide fiber respectively, is used for enhancing the temperature resistance and the safety performance of the solar silica gel plate, and can improve the acid and alkali resistance and the service life of the solar silica gel plate; the polyimide fiber in the formula serves as a framework of the solar silica gel plate, the internal structural strength of the solar silica gel plate can be effectively improved, and the acid and alkali resistance, the structural strength and the safety performance of the solar silica gel plate can be effectively improved.

The invention discloses an EVA shoe sole and a preparation method thereof. The EVA shoe sole is prepared from, by weight, 60-70 parts of EVA, 8-10 parts of OBC, 12-15 parts of POE, 1-2 parts of an ACfoaming agent, 1-2 parts of a cross-linking agent and 2-3 parts of an activator. The OBC has good heat resistance, high elasticity and good processability, and can provide excellent resilience for anEVA foaming system, so that the EVA sole has high elasticity and is not prone to being compacted. By adding the POE, the resilience of the EVA sole can be further improved, the surface crystallizationrate of the material can be reduced, the problem that the surface of a traditional EVA foamed shoe material is prone to wrinkling is solved, and the attractiveness of the product is improved. Besides, OBC molecules and POE molecules inevitably form entanglement in a three-dimensional space, and the entanglement can limit movement of macromolecular chain segments like chemical crosslinking, so that the EVA sole is further not prone to being compacted, the surface of the EVA sole is not prone to wrinkling, and the use performance and the attractive performance are guaranteed.