14results about How to "High rebound rate" patented technology

A manual cardio-pulmonary resuscitator capable of controlling the pressing depth comprises a pressing device body, a bandage, a supporting rod and a back plate, the pressing device body comprises a bottom plate and a pressing rod, a through hole is formed in the bottom plate, the pressing rod is arranged in the through hole in a penetrating mode, and a pressing head is arranged at the bottom of the pressing rod; the top ends of the left support rod and the right support rod are detachably connected with the left end and the right end of the bottom plate respectively, and the bottom ends of the left support rod and the right support rod are supported at the left end and the right end of the back plate respectively; the left end and the right end of the bottom plate are connected with a left bandage and a right bandage respectively, the upper end of the left bandage and the upper end of the right bandage are detachably connected with the left end and the right end of the bottom plate respectively, and the bottom end of the left bandage and the bottom end of the right bandage are detachably connected with the back plate respectively. The manual cardiopulmonary resuscitator capable of controlling the pressing depth is small in size, light in weight, capable of guaranteeing the pressing depth and capable of being applied to various first-aid places.

The invention discloses a water-swelling elastic plugging agent for a water-based drilling fluid and a preparation method of the water-swelling elastic plugging agent. The water-swelling elastic plugging agent comprises the following components in parts by weight: 100 parts of a polyolefin elastomer matrix material; 15 to 20 parts of a reinforced matrix material; 0.8 to 1.5 parts of a polyolefin elastomer matrix material cross-linking agent; 8 parts to 15 parts of a reinforcing agent A; 20 to 30 parts of a reinforcing agent B; 15 to 30 parts of super absorbent resin; 15 to 20 parts of a plasticizer; 0.2 to 0.8 part of an isolating agent; 0.5 to 1 part of an anti-aging agent; the plugging agent provided by the invention is simple in preparation process, not only is beneficial to industrial production, but also is convenient to prepare plugging slurry on site, can achieve a good plugging effect, and provides an effective technical means for well leakage treatment.

The utility model relates to the technical field of shoes, in particular to a high-strength springback slipper which comprises a sole, a vamp, an insole and a carbon fiber elastic piece, the sole and the vamp are integrally formed by EVA materials, the insole is also made of the EVA materials, the carbon fiber elastic piece and the insole are sequentially bonded to the top face of the sole, and the carbon fiber elastic piece is arranged on the top face of the sole. According to the slipper, the carbon fiber elastic sheet is compounded with the sole and the insole which are made of the EVA material, and the high-modulus material performs mechanical enhancement and pressure dispersion on the low-modulus matrix, so that the slipper has relatively high compressive strength, the slipper can still keep stable supporting force after being used for a long time, and the comfort requirements of scenes such as exercise recovery and long-time standing are met.

The present invention provides a fabric with high resilience, a processing device and a preparation method, and relates to the field of textile technology. The processing device for the fabric with high resilience, the fabric with high resilience is obtained by interweaving an upper fabric and a lower fabric, then retreating with hot water and drying. In the present invention, after retreating, the first inner weft and the first outer weft become thinner, and the second outer weft and the second inner weft are retreated, so that the remaining warp yarn and weft yarn in the fabric structure have a higher buckling rate, and the fabric has better fluffiness, drape and elasticity. The cross-sectional shape of the water-soluble vinyl fiber is set to an octagonal star shape, so that coarser fibers can be obtained with less raw materials, making the fabric fluffier. By setting a pressure detection component in conjunction with a valve component, the filter screen can be found to be blocked in time, and the group of channels can be closed in time by the valve component to avoid the production of a large number of defective products. The alarm of the controller can remind the staff to perform maintenance in time.

The application relates to the technical field of court surface layers, in particular to a high-weather-resistance composite silicon PU court surface layer and a construction method thereof. The high-weather-resistance composite silicon PU court surface layer comprises, from bottom to top, a waterproof bottom coating layer, a silicon PU material layer, a winter polyurea reinforcing layer and a water-based surface paint layer. The waterproof bottom coating is used as a bottom sealing material, the silicon PU material is used as a bottom layer, the winter polyurea material is used as a reinforcing layer, and the water-based surface paint is used as a color layer, so that a novel court surface layer with good weather resistance, high rebound rate, excellent performance and super-long service life is obtained; the service life of the novel court surface layer is more than 10 years, excellent physical properties are maintained, and defects such as low service life, poor rebound, poor impact absorption, poor wear resistance, easy pulverization, high cost and complex construction of ordinary courts are effectively overcome, and the knee joint safety and body health of athletes are fully protected.

The present invention provides a photocurable 3D printed part and its application in a foaming material. The photocurable 3D printed part of the present invention is an elastomer obtained by photocurable 3D printing, and the crosslinking density of the photocurable 3D printed part is 0.001 to 10 mmol / cm 3 , and the glass transition temperature is lower than 30°C.

This invention relates to the fields of fine chemicals and polymer materials technology, specifically a method for manufacturing toy adhesives. It includes steps for preparing the adhesive base material, preparing borax solution, and cross-linking molding. Polyvinyl alcohol, guar gum, methylparaben, etc., are prepared as base materials, which are then reacted with borax solution to undergo a cross-linking reaction. The core of this invention is the strict limitation of specific high-temperature ranges and constant-temperature stirring times during the base material preparation process, which promotes the complete extension and entanglement of molecular chains, constructing a dense and uniform three-dimensional network structure. This invention effectively avoids microscopic particle residue and stress concentration, achieving a significant improvement in the tensile strength, elongation at break, and resilience of the toy adhesive.

The invention belongs to the technical field of aerogel heat insulation materials, and particularly relates to a preparation method of an aerogel composite porous material with a tubular structure. According to the method, elastic porous foam or sponge with a tubular structure is used as a base material, a supporting shaft of a shaft-containing mold is sleeved with the base material, an axial protective sleeve is sleeved with the base material, then the shaft-containing mold is installed on an inner cavity mold to be fixed and sealed, then enough aerogel powder is injected into the mold, then pressing is conducted, and the mold is formed. After pressing is completed, pressure relief is conducted, the mold and the base are removed, finally, redundant aerogel powder on the surface of a product is removed, and the tubular aerogel composite porous material can be obtained. According to the invention, the problems of non-uniform size and shrinkage of tubular foam in the processes of dipping, gelling and supercritical drying in a traditional aerogel manufacturing method can be avoided, and the problem that a low-melting-point porous base material cannot resist the supercritical drying temperature and cannot be manufactured can be solved.

The present disclosure discloses a low-odor high-resilience polyurethane foam and a preparation method thereof, and relates to the field of foam preparation. The low-odor high-resilience polyurethane foam comprises a polyol side composition and an isocyanate component. The polyol side composition comprises, based on 100 parts by mass of the polyether polyol in the polyol side composition: 2-5 parts by mass of open-cell polyether, 1-2 parts by mass of diethanolamine, 0.2-0.5 parts by mass of low-odor low-cyclic polyether modified silicone oil, 0.3-0.5 parts by mass of a reactive composite catalyst, 0.3-0.7 parts by mass of a low-odor gel catalyst, and 2.5-3.8 parts by mass of water. The isocyanate component is diphenylmethane diisocyanate. The ratio of the isocyanate component to the polyol side composition is 100-120 in terms of the isocyanate index. The present disclosure improves the problems of foam odor, high volatile organic compound emission, insufficient long-term odor retention, difficulty in balancing high resilience and low compression permanent set, and limited foam structure regulation means.

The utility model discloses a professional court structure which sequentially comprises a basic sealing layer, an elastic layer, a rebound reinforcing layer, a wear-resistant, non-slip and weather-resistant water-based colored surface layer and a boundary layer from bottom to top, the lower end face of the elastic layer is connected with the basic sealing layer, the elastic layer is connected with the wear-resistant, non-slip and weather-resistant water-based colored surface layer through the rebound reinforcing layer, and the boundary layer is arranged between the elastic layer and the wear-resistant, non-slip and weather-resistant water-based colored surface layer. A high-resilience elastic body is embedded in the elastic layer, the high-resilience elastic body comprises elastic bodies with different particle sizes, different shapes and different densities, and a boundary layer is arranged on the upper surface of the wear-resistant anti-slip weather-resistant water-based colored surface layer. The elastic bodies with different particle sizes, different shapes and different densities are embedded in the elastic layer, so that the lower layer part has high rebound performance so as to meet the impact absorption performance requirement of the wood floor, and the rebound reinforcing layer can increase the structural hardness of a court and improve the rebound rate, vertical deformation and other performance of a ball. The wear-resistant, slip-proof and weather-resistant colored surface layer adopts a water-based technology, so that the service life of the court is prolonged due to excellent weather resistance.

This invention relates to the field of medical materials technology, and discloses a biodegradable esophageal stent and its preparation method. The esophageal stent is woven from blended monofilaments. The raw materials for the blended monofilaments include polylactic acid, polycaprolactone, and additives, including polyethylene glycol, carbon nanofibers, star-shaped PLA-PCL block copolymer, and talc. The preparation steps are as follows: the raw materials are mixed in proportion, melt-blended and granulated, and then the blended monofilaments are obtained using a high-pressure capillary rheometer; the blended monofilaments are woven into a mesh-like stent framework on a mold using an interlaced pressing method, then heat-set, and demolded after cooling; a thermoplastic polyurethane casting liquid loaded with bioactive substances is cast into a film and coated onto the inner wall of the stent framework; the thermoplastic polyurethane film is heated to fuse with the stent framework, and after cooling, the esophageal stent is formed. The esophageal stent of this invention has good mechanical properties, controllable degradation characteristics, and biocompatibility.

This invention relates to a whole coconut husk mixed cultivation substrate and its preparation method, belonging to the field of soilless cultivation substrate technology. The beneficial effects of this invention are as follows: This invention directly crushes whole coconut husks without separating the coconut husk fibers, producing a whole coconut husk mixed cultivation substrate with a short fiber content as high as 40%~60% in one step. This overcomes the long-standing technical biases that "coconut husk fibers are difficult to crush directly" and "coconut coir should have its fibers removed as much as possible." The short fibers in the product form a three-dimensional network structure, significantly improving the substrate's aeration and root development environment, increasing crop root density by more than 50%. Simultaneously, it eliminates the fiber separation and re-mixing processes, reducing equipment investment by approximately 30% and energy consumption by approximately 40%. It utilizes ambient temperature mechanical cold pressing for desalination and dehydration, without thermochemical damage, resulting in a product with an EC value as low as 0.5~1.5 mS / cm and a resilience rate ≥99%, combining excellent cultivation performance, simplified process, and convenient storage and transportation.

The invention belongs to the technical field of shoes, and discloses a cushioning layer-by-layer propelling sole and a shoe, the cushioning layer-by-layer propelling sole comprises a midsole structure and a large bottom piece, the midsole structure comprises a heel part, a palm part and a midsole piece, and the heel part, the palm part and the midsole piece are sequentially stacked from bottom to top; the sole part and the insole sheet cover the sole, and the heel part extends from the heel to the middle of the foot; the rebound rates of the heel part, the palm part and the insole piece are sequentially increased; the heel part and the palm part are arranged on the large bottom piece, and an anti-skid structure is arranged on the side, away from the insole structure, of the large bottom piece. The shoe comprises the cushioning layer-by-layer propelling sole, and the rebound rate of the half sole and the stability of the heel are increased by increasing the rebound rate of the heel part, the rebound rate of the sole part and the rebound rate of the insole piece in sequence.

The utility model discloses a rubber production vulcanization mechanism, include: mechanism base, mechanism shell and longitudinal displacement power shell, the utility model relates to rubber processing equipment technical field, this mechanism through the vulcanization coupling structure of down -pressing type, has realized the efficient vulcanization of rubber raw material in mechanism shell: through vertical pressure technology ensures that the rubber compound is heated evenly, significantly improves the vulcanization efficiency, after vulcanization, the equipment can switch to refrigeration mode quickly, utilizes the minimum material displacement and realizes the cooling solidification, and the seamless connection of this hot -cold technology has three big advantages: first, shortens the vulcanization -cooling conversion period, and production efficiency can be promoted, second, avoids the product deformation risk caused by traditional handling, third, through accurate temperature control strengthens rubber molecular crosslinking structure, and the finished product physical performance index (such as tensile strength, resilience) is greatly promoted, especially suitable for the stable production of high -precision rubber products.