67results about How to "Appropriate elasticity" patented technology

The invention provides cement-emulsified asphalt mortar and a preparation method thereof. The cement-emulsified asphalt mortar comprises the following components in part by weight: 110 to 160 parts of emulsified asphalt, 10 to 30 parts of polymer emulsion, 90 to 100 parts of cement, 150 to 250 parts of sand, 0 to 0.5 part of strength modifier, 0 to 10 parts of expanding agent, 0 to 1.0 parts of fiber, 0 to 0.05 part of cellulose, 0.004 to 0.015 part of aluminum powder, 0 to 0.1 part of defoaming agent, 0 to 1.2 parts of air entraining agent and 0 to 25 parts of water. The cement-emulsified asphalt mortar has good low-temperature resistance, and is suitable for the slab tracks of high-speed railways, passenger transport lines and urban high-speed light rails in severe cold areas.

A new root canal filling point which is physicochemically stable, is not toxic to periapical tissue, can be sterilized and x-rayed; and has high elasticity and fracture resistance which enables the root canal filling point to be pressure-inserted into an even narrow or curved root canal. The root canal filling point is made of a copolymer consisting of propylene and ethylene, and a contrast medium.

The thin film of the invention comprises a hydrate of a vitrified gel containing an extracellular matrix components, which can be integrated with a retainer as required. A hydrogel thin film containing an extracellular matrix components such as thin-film collagen hydrogel thin film, which is useful for a cell culture substratum and for preventing organ adhesion, can be easily prepared, and is excellent in expediency.

The invention relates to a composite biomaterial containing cross-linked hyaluronic acid derivative and hydroxylapatite and a preparation method thereof. The composite biomaterial is characterized by containing the cross-linked hyaluronic acid derivative and the hydroxylapatite. The composite biomaterial can be obtained by uniformly mixing hyaluronic acid or soluble salt of the hyaluronic acid with the hydroxylapatite and then carrying out the cross-linked reaction, or can be obtained by firstly preparing the cross-linked hyaluronic acid derivative and then uniformly mixing the cross-linked hyaluronic acid derivative with the hydroxylapatite. The composite biomaterial has good biological compatibility, has suitable rate of biodegradation, mechanical property, pore diameter and porosity, and can be used as the cytoskeleton to be applied to bone or cartilage tissue engineering.

The present invention provides a supermolecule hybrid hydrogel having excellent antibacterial property, a preparation method and applications thereof. The preparation method comprises that Fmoc-Glu-OMe adopted as a gelatin factor, silver nitrate and chitosan are subjected to co-assembly under an ultrasound effect to form a clarified and transparent supermolecule hybrid hydrogel, wherein the uniform size and monodispersed silver nanoparticles are subjected to in situ synthesis in the hydrogel, and the antibacterial property of the supermolecule hybrid hydrogel is substantially improved with the synergistic effect of the three components such as the Fmoc-Glu-OMe, the silver nanoparticles and the chitosan. According to the present invention, the supermolecule hybrid hydrogel has performances such as self-healing, injectability, capability of coating, and the like; the preparation method is simple, has the low cost, and can be commercialized; during the preparation process, any reducing agents and any dispersants are not added, and the silver nanoparticles are synthesized through the ultrasonic in situ synthesis, such that the green environment protection advantage is achieved; and various components of the supermolecule hybrid hydrogel provide the synergistic effect to make the antibacterial property of the composite material be significantly increased, such that the supermolecule hybrid hydrogel has wide application prospects in the field of the antibacterial material and the wound healing promotion.

The invention discloses a sealed sampling bottle. The sampling bottle which comprises a bottle body (1) and a bottle cover (2) is characterized in that there are a threaded connection and a seal between the bottle body (1) and the bottle cover (2); the bottle cover (2) is provided with sampling ports (4) which are respectively provided with a sealing cover (3), and each of the sampling ports (4) has a threaded connection with one sealing cover (3); and the sealing cover (3) of each of the sampling ports (4) is provided with a through hole, and a sealing gasket is arranged between one sampling port (4) and one sealing cover (3) to seal. By adopting the sampling bottle of the invention to preserve gases, liquids and solids, the sealing effect is good, so the adoption of a unified preservation mode of different detection projects of a same sample is realized, intermediate links from an acquisition phase to a detection phase of the sample are shortened, and the reliability and the validity of analysis data are practically improved.

A charging member is provided with a surface layer that can not easily wear even due to its contact with a photosensitive member and also has an appropriate elasticity contributing to the formation of an appropriate nip between it and the photosensitive member. The charging member has a substrate, an elastic layer and a surface layer; the surface layer containing a high-molecular compound having an Si—O—Hf linkage and having a constitutional unit represented by the formula (1) and a constitutional unit represented by the formula (2):

The invention discloses a composite hydrogel for promoting bone repair. The composite hydrogel is prepared from the following components; methacrylic acid modified gelatin and dopamine modified sodiumalginate. In the composite hydrogel, the content of the methacrylic acid modified gelatin is 8-12% w/v, and the content of the dopamine modified sodium alginate is 0.5% w/v-2% w/v. A molecular structure of the dopamine modified sodium alginate contains a catechol structure, and the adhesion property is excellent. The composite hydrogel uses the methacrylic acid modified gelatin as a substrate ofthe hydrogel, and the mechanical properties and adhesion properties of the hydrogel are improved by incorporating the dopamine modified sodium alginate, so that the viscosity is excellent, the softness degree and elasticity are suitable, and the composite hydrogel is suitable for bone repair treatment. The results of in vitro experiments show that the composite hydrogel can load and slowly releasebiologically active factors and/or drugs that promote bone repair, good repair effect can be presented in bone defect models, and the healing of bone defect wounds can be significantly promoted.

The invention discloses a processing technique of antique relief sculpture wood doors and furniture and equipment thereof. In the invention, planking stuff with wood grain is fed into drawing equipment, the wood grains in the planking stuff project above the surface of the planking stuff under the action of a wire brush body, thus forming solid rugged surfaces; the planking stuff processed is fed into a smoke room and natural coloration is carried out on the planking stuff with smoking materials in the smoke room. The mechanical drawing equipment adopted by the invention improves the productivity efficiency of the planking stuff and reduces the labor intensity. In a processing method of the invention, the wood grains of the planking stuff have strong tree-dimensional perception; the surface of the planking stuff is smooth and clean. In the step of natural coloration of the planking stuff, natural smoking materials are adopted and coloration is uniform, the color is simple and unsophisticated, natural and colourfast. Besides, the working process has no pollution and is a natural and environmentally friendly coloration method. The drawing equipment in the invention adopts the wire brush body and is provided with suited density and elasticity, and the surface of the planking stuff takes on uniform, smooth and clean, natural and solid wood grains. A shot-proof device has simple structure and good security.

The invention belongs to the field of glue material, and especially relates to an OCA optical glue film, and a manufacturing method thereof. The OCA optical glue film comprises a first release film layer, a soft glue layer, a first hard glue layer, and a second release film layer which are contacted successively, or comprises a first release film layer, a second hard glue layer, a soft glue layer, a first hard glue layer, and a second release film layer which are contacted successively; the shore hardness of the soft glue layer ranges from 5 to 50A, and the thickness ranges from 50 to 200<mu>m; the shore hardness of the first hard glue layer and the second hard glue layer ranges from 15 to 50D, and the thickness ranges from 50 to 150<mu>m. according to the manufacturing method, the OCA optical glue film is provided with a multi-layer structure with different hardness, so that the OCA optical glue film is provided with appropriate hardness and elasticity, and excellent fillibility. The OCA optical glue film possesses the multi-layer structure, and all the glue layers are relatively thin, so that solidification difficulty of the glue layers in glue layer production is reduced.

The invention discloses a high molecular elastic ventilated pillow inner which is formed into a prolate fixed shape by a plurality of fibers extruded by high molecular materials through melting per se. The inside of the pillow inner is of a space reticulate structure. The high molecular materials are LDPE (Low-Density Polyethylene), HDPE (High-Density Polyethylene), LLDPE (Linear low density polyethylene), EVA (Ethylene-Vinyl Acetate copolymer), PP (Propane Polymer), PE (Poly Ethylene) and the like. The high molecular elastic ventilated pillow inner is of a three-dimensional elastic structure formed by high molecule polymerization, and the thousands of curly fibers provide excellent elasticity. Because the elasticity comes from the molecular materials per se, long-lasting elasticity is available (the elasticity is proven by 250,000 compression tests); and because the high molecular elastic ventilated pillow inner is formed by melting per se and is not adhered by using gluewater, the high molecular elastic ventilated pillow inner has favorable soundness of tension and fatigue resistance; because the inside of the pillow inner is of the space reticulate structure, the high molecular elastic ventilated pillow inner has favorable air permeability. The invention also discloses a preparation method of the pillow inner.

The invention belongs to the technical field of biomedical dressings and relates to an end-capped modified polyethylene glycol cross-linking agent having an ultraviolet light response function, a preparation method and a hydrogel dressing containing the cross-linking agent and a preparation method thereof. The technical problem is solved that wound pain and secondary wounds care caused by when anexisting hydrogel dressing is removed for secondary wound treatment. The modified polyethylene glycol cross-linking agent having the ultraviolet light response function is formed by adopting an injectable in-site gel forming mode, and the gel forming mode has very good adaptability to wound shapes and meanwhile has better fitting property compared with a blocky dressing to be gelled without auxiliary fixing materials. When wounds need to be further treated, regional selective irradiation can be performed through 10 mw/cm<2> ultraviolet light of 365 nm, gel softening and degradation are achieved. Compared with other dressings, the function can prevent wound pain during gel removal and prevent newly growing tissues from being physically harmed to cause secondary wounds.

To provide a coating composition, which is capable of providing a coating film on a resin part and on a steel plate part at the same time at lower temperatures than conventional coating compositions, and which is capable of providing a coating film that has excellent bending resistance. A clear coating composition, which contains a base material that contains an acrylic polyol, a crosslinking agent that is composed of an active methylene type blocked isocyanate and a melamine resin, and a curing catalyst. The mass ratio of the base material to the melamine resin is 1.5-9.0, and the mass percentage of the active methylene type blocked isocyanate in the composition is set within a specific range when the total of the mass percentage of the base material and the mass percentage of the melamine resin in the composition is taken as 100% by mass.

The invention belongs to the medical field of medicines, and relates to an extruded 3D printed coating type sustained release preparation and a preparation method thereof. According to the coating type sustained release preparation disclosed by the invention, a mixture of gelatin, glycerin and water is used as a substrate, a medicine or HPMC is added, an inner core or a coating is obtained, then through combination with model slicing and printing parameters, extruding and 3D printing are performed, and a target namely the coating type sustained release preparation is obtained. The formula hasgood printing properties, and takes account of smooth extruding and quick deposition; and compared with a conventional slow release printing material, the extruded 3D printed coating type sustained release preparation has the advantages that the water content of a system is reduced, and intensity and elasticity of samples are improved. An optimized coating model structure can solve the problems existing in a conventional extruded 3D printed sustained release preparation, including low medicine loading quantity, obvious early stage sudden release and not ideal 24h slow release actions. According to the extruded 3D printed coating type sustained release preparation disclosed by the invention, diclofenac sodium, aminophylline, metoprolol tartrate and acetylsalicylic acid are further used as representatives, the application effect of the coating type sustained release preparation is disclosed, and through adjusting medicines and models, individualized treatment of various medicines can berealized.

The invention discloses a tyrosine-derived amygdalin-loaded hydrogel preparation method and application. The method includes: dissolving Fmoc-Tyr-OH solid powder into dimethyl sulfoxide, and ultrasonically dispersing to obtain Fmoc-Tyr-OH stock solution; dissolving amygdalin solution with ultrapure water to obtain amygdalin stock solution; well mixing Fmoc-Tyr-OH stock solution and amygdalin stocksolution, and standing to obtain tyrosine-derived amygdalin-loaded hydrogel. The tyrosine-derived amygdalin-loaded hydrogel has anti-inflammatory characteristics, the problem of failure in direct application of amygdalin monomer to traumatic brain injured parts can be solved, bioactivity of amygdalin is kept, and evident treatment effects are achieved in application to treatment of inflammatory reaction caused by traumatic brain injuries.

The invention belongs to the technical field of nuclear reactors and particularly relates to a positioning connection structure of a follower assembly and an absorber assembly of a control rod driving wire of a nuclear reactor, which comprises a follower assembly and an absorber assembly, spring hooks are fixedly arranged on the opposite inner walls at two sides of the lower end of the absorber assembly, clamping holes matched with the spring hooks are arranged in the opposite inner walls at two sides of the upper end of the follower assembly, and the spring hooks and the clamping holes are matched to realize positioning connection between the follower assembly and the absorber assembly. Each spring hook comprises a main body and a hook body below the main body, the main body of each spring hook is provided with a screw hole, each hook body comprises a protruding block on the inner side as well as an upper claming hook and a lower clamping hook on the outer side, and the upper clamping hook is narrower than the lower clamping hook; and the lower clamping hooks are matched with the clamping holes. In the technical scheme provided by the invention, the follower assembly and the absorber assembly are connected into a whole, and the advantages of compactness for connection, accuracy for positioning, appropriate elastic force, convenience for operation and the like are achieved.