31results about How to "Meet the needs of different purposes" patented technology

The invention discloses a stent type silk fibroin film insoluble in water, and preparation and application of the stent type silk fibroin film. A preparation method includes the steps of placing silk fibroin solution in a smooth, flat and horizontal mold, and obtaining a basilar film by humid and heat crosslinking; and laying the silk fibroin solution on the surface of the basilar film and forming the stent type silk fibroin film insoluble in water after freezing, drying and humid and heat crosslinking. Silk fibroin is used as a raw material, and biocompatibility is good; a preparation process is non-toxic and environment-friendly, and the thickness of the film and the aperture of a stent layer are easy to control; the film is soft in a moist environment, the basilar film is compact, and cells, microorganisms and biomacromolecules cannot penetrate through the basilar film; the stent layer is in the shape of a porous sponge, and is beneficial to fixation of the film, hemostasis of a wound and regeneration of transmitting tissues; and the film has a wide market in the field of anti-adhesive films and artificial film patches.

The invention discloses a controllable elastic energy release and recovery system, wherein a certain amount of coil springs (or other elements or components with elastic deformation) are used as an energy storage mechanism of the system, and appropriate auxiliary devices such as transmissions (and reversing mechanisms) are equipped. Under the control of a control system, through the speed variation and torque variation of each transmission and the reversing of the reversing mechanisms, the coil springs not only can store the recoverable energy, but also can release the stored energy as required, and the energy release and recovery tasks are completed, furthermore when the output ends of the coil springs can be kept at the higher rotation speed, not only can two ends of each coil spring rotate at the same direction at different rotation speeds, the energy release or recovery speed of the coil springs can be lowered, but also two ends of each coil spring can rotate at the opposite directions, the energy release or recovery speed of the coil springs can be improved, thus the system can operate normally within the greater variable range of torque for the coil springs, the energy release and recovery tasks are completed better, and the energy utilization ratio is improved.

The invention discloses a processing method of shale oil, which comprises the following steps: after mixing shale oil and an extracting agent, heating up, and starting to stir so that the shale oil and the extracting agent are thoroughly mixed and are thoroughly in contact with each other; stopping stirring, standing so that the extract phase and the raffinate phase stratify, and separating the extract phase and the raffinate phase; and respectively distilling the extract phase and the raffinate phase to respectively obtain extract oil and the extracting agent, and raffinate oil and the extracting agent, and recovering the extracting agent. The method disclosed by the invention is simple and easy to operate, and the reaction conditions are mild; and the method can be carried out under theconditions of atmospheric pressure and low temperature, does not need the participation of the catalyst, and thus, has the advantages of low input cost and obvious economic benefit. Meanwhile, the method can be used for generating multiple products, such as extract oil composed of light and heavy components respectively for preparing non-hydrocarbon compounds and asphalt products, and raffinate oil which can be directly used as the raw material for catalytic cracking, thereby increasing the added value of the products. The heavy component of the extract oil has the advantages of low viscosity, high plasticity and high temperature sensibility, and can be blended into asphalt of different designations to satisfy the demands for different purposes.

The invention relates to a method for preparing a quartz needle by etching a capillary tube by hydrofluoric acid. The method specifically comprises the steps of removing polymer coating from a to-be-etched position of the capillary tube; then fixing the capillary tube on a designed apparatus (figure 1); and adding a certain volume of hydrofluoric acid to etch the capillary tube until the capillary tube is broken due to etching. A conical surface is formed in the etched position of the quartz capillary tube due to a volatilization effect of the hydrofluoric acid and an affinity interaction with the surface of quartz. The method can be widely applied to preparation of quartz materials, the outer diameters and conical surfaces of which need to be controlled, used in the fields of a mass spectrum electronic injection needle, a genetic engineering micro-injection needle and the like.

The invention discloses a three-dimensional woven fabric coated with multiple layers of emulsion strips. The three-dimensional woven fabric coated with the multiple layers of emulsion strips comprises warps, wefts and the emulsion strips, wherein the three-dimensional woven fabric consists of a plurality of repetitive tubular woven fabric units, wherein every two adjacent tubular woven fabrics are provided with a section of shared woven fabric; the tubular woven fabric unit is formed by weaving the warps and the wefts; and the emulsion strips are coated in the tubular woven fabric units by virtue of weaving. The three-dimensional woven fabric disclosed by the invention has the advantages of good integrity, structure stability, easiness for thickening, higher strength, higher compression resistance and favorable air permeability and water vapor permeability.

The invention discloses a complex structure corrugated pipe. The complex structure corrugated pipe comprises a metal corrugated pipe, a rubber inner layer and a rubber outer layer, wherein the metal corrugated pipe is formed by machining corrugations on a thin-wall steel pipe; the rubber inner layer is wrapped on the outer wall of the metal corrugated pipe; and the rubber outer layer is wrapped onthe outer wall of the rubber inner layer. The rubber layers of the complex structure corrugated pipe are closely combined with the corrugated pipe. Damping is high. Vibration of the corrugated pipe is reduced. Vibration parameters of the corrugated pipe are reduced. The anti-fatigue-cracking service life of the corrugated pipe is prolonged. The defect that the corrugated pipe cracks easily is overcome. Besides, when having cracks, the complex structure corrugated pipe can continuously achieve the normal delivery function with the aid of the sealing effect of the rubber layers and the secondary protective effect, prevent serious secondary faults that leakage of the substances such as oil, air and water delivered in the corrugated pipe causes fires, the performance is reduced and machines and equipment cannot operate, gain time for subsequent use and maintenance and minimize the fault influence.

The invention relates to a rectifying method of vinyl acetate. The rectifying method comprises the following steps of firstly, using a rectifying tower to rectify the degassed and crudely distilled vinyl acetate; then, respectively rectifying the vinyl acetate in a rectifying section and a stripping section of the rectifying tower. The rectifying method has the advantages that by rectifying the vinyl acetate in the stripping section, the contents of benzene and benzene series in the vinyl acetate are greatly reduced; the problem of high contents of the benzene and the benzene series in the vinyl acetate in the prior art is solved, and the quality standard of smoke water-based latex products is met.

A new-type IC engine with hydraulic drive other than crank-connecting rod mechanism is composed of opposed piston cylinders, plunger pumps at both ends, and plunger-type internal or external curved oil motor unit. The cam curve can control and optimize the speed distribution of opposed pistons. Said hydraulic cylinder has liquid supplementing, cooling and liquid replacing mechanisms.