12results about How to "Retain physical properties" patented technology

The invention relates to the technical field of drying process control, in particular to a medicinal material drying process control method and system for traditional Chinese medicinal material processing, and the method comprises the following steps: calling a temperature set value, a humidity discharge rate and heating power based on the operation condition of a drying chamber, and analyzing the difference value between the medicinal material moisture content and the target moisture content; combining the medicinal material density with the water content change rate, matching the coupling relationship between the humidity discharge rate and the heating power, and establishing an initial drying process control value; according to the method, through collaborative analysis of the temperature set value, the humidity discharge rate and the heating power, accurate matching of initial drying conditions and material characteristics is achieved, excessive drying is avoided, linkage of the air speed and the humidity discharge rate is optimized, humidity distribution uniformity and environmental stability are improved, the evaporation rate is dynamically matched, and the drying efficiency is improved. Drying uniformity and quality stability are improved, termination control parameters are optimized in real time, drying time is shortened, energy consumption is reduced, and active ingredients and physical characteristics of medicinal materials are reserved to the maximum extent.

The invention belongs to the technical field of ultra-high molecular weight material manufacturing, and particularly relates to an ultra-high molecular weight polyethylene fiber recycling spinning method which comprises the following five steps: S1, sorting; s2, dehydrating and degumming; s3, cutting is conducted; s4, dissolving; and S5, spinning. According to the method, the ultra-high molecular weight polyethylene fiber with the physical property equal to that of the protofilament can be recycled, the ultra-high molecular weight polyethylene fiber with the use performance higher than that of the protofilament can be obtained, and the application range of the recycled ultra-high molecular weight polyethylene fiber is effectively widened; the purposes of efficient and environment-friendly regeneration and high-quality recycling of the waste ultra-high molecular weight polyethylene fibers are achieved.

The present invention relates to the technical field of garbage packaging bags, and specifically discloses an environmentally friendly, non-toxic, biodegradable garbage bag and a preparation method thereof. The raw materials of the environmentally friendly, non-toxic, biodegradable garbage bag include, by mass: 80-90 parts of polyethylene, 100-120 parts of nano calcium carbonate, 1-5 parts of photosensitizer, 1-5 parts of chitosan, 1-5 parts of lubricant, 1-3 parts of dispersant, 1-3 parts of coupling agent, 10-30 parts of starch, 1-5 parts of acrylamide, 1-2 parts of polyvinyl alcohol, 0.01-0.1 parts of cross-linking agent, 0.001-0.01 parts of initiator, 1-5 parts of polyaspartic acid, 30-40 parts of polylactic acid, 40-60 parts of polybutylene terephthalate-adipate, 5-15 parts of polybutylene succinate, 0.1-2 parts of maleic anhydride, and 5-15 parts of toughening fiber; the raw materials of the toughening fiber include: oligosaccharides, sodium methyl methacrylate sulfonate, potassium persulfate, and microcrystalline cellulose.

The application discloses an intrinsic flame-retardant PMMA resin material, a flame-retardant resin composition, a preparation method and application, and belongs to the technical field of flame-retardant modification of PMMA resin materials.The intrinsic flame-retardant PMMA resin material comprises the following raw materials: 70-95 parts of MMA, 5-30 parts of a halogen-free flame retardant and 0.01-0.05 parts of an initiator; meanwhile, in order to improve the flame-retardant effect, a transparent flame retardant is added to the above system to obtain a flame-retardant resin composition material.The intrinsic flame-retardant PMMA resin material is prepared by introducing a flame-retardant monomer with the structure of 'MMA+ flame-retardant group' and copolymerizing with MMA, the intrinsic flame-retardant PMMA resin material improves the flame-retardant performance while maintaining the good light transmission performance and mechanical performance of the PMMA resin itself; meanwhile, the transparent flame retardant is introduced into the system, the two kinds of flame retardants produce a compounding synergistic effect, and the prepared flame-retardant resin composition material has excellent flame-retardant performance, light transmission performance and mechanical performance.

This utility model discloses a golf club and a virtual golf club, comprising: a club body and a handle sleeve disposed on the club body for fixing a game controller; a target body disposed in an axial channel at the first end of the club body; a first magnetic attractor disposed in the axial channel of the club body; an impact member movably disposed along the axial channel of the club body and located between the first magnetic attractor and the target body, wherein at least one side of the impact member facing the first magnetic attractor is configured as a second magnetic attractor magnetically attracted to the first magnetic attractor; and a magnetic force adjustment component disposed at the second end of the club body for limiting the first magnetic attractor and the impact member to adjust the distance between the first magnetic attractor and the impact member, thereby adjusting the magnetic attraction between them. Users need to use different forces to swing the club to make the impact member disengage from the first magnetic attractor and strike the target body, satisfying the user's needs for different swing forces. Combined with a VR game controller, it realizes near-realistic golf swing training.

The invention discloses a method for preparing an oleophilic gold nanorod, comprising the following steps: (1) preparing a gold nanorod dispersion by a seed method; (2) cleaning; (3) coating a silicon dioxide layer; (4) surface modification; and (5) cleaning and dispersing. The invention has simple process steps, strong operability, and a wide range of applications. Gold nanorods coated with silicon dioxide of different porosities can be surface modified. The prepared oleophilic gold nanorod material can retain the physical properties of the gold nanorod itself and can also be uniformly dispersed in an oily solvent, thereby broadening the application range of the gold nanorod.

The invention discloses a traditional Chinese medicine atomized liquid for releasing blood stasis and a preparation method and application, and belongs to the technical field of traditional Chinese medicine, raw materials are selected from herbs in a high-altitude snowline zone, the unique growth environment of the herbs brings about special effective components of the herbs, and the effects of releasing blood stasis and removing stasis are guaranteed. The preparation method is optimized, conditions of all links are strictly controlled, such as air-drying, medicine soaking, decocting with slow fire, retaining of herbal characteristics, extraction of effective components and improvement of medicine liquid concentration and medicine effect, and the preparation method is superior to traditional medicine decocting. In application, an atomization technology is combined, active ingredient molecules in liquid medicine are atomized into tiny particles through high temperature and high pressure, and the tiny particles are continuously introduced into a respiratory system at a specific flow within a period of time, so that the absorption efficiency is improved, and damage and loss of oral ingredients and injection pain infection risks are avoided. The traditional Chinese medicine composition can quickly improve the symptoms of patients, relieve the burden, be easily accepted by traditional administrators and improve the compliance. In conclusion, breakthrough is brought to traditional Chinese medicine treatment of releasing blood stasis and removing stasis, efficient, convenient and comfortable treatment choices are provided, and wide prospects and important clinical values are achieved.

The invention discloses a preparation method of a hemispherical aluminum oxide catalyst carrier, which comprises the following steps: by taking a spherical aluminum oxide catalyst carrier prepared by an oil column forming method as a precursor, modifying the precursor by using a calcium hydroxide aqueous solution, and then filling pores of the precursor by using a monosaccharide aqueous solution to modify a pore structure, thereby obtaining the hemispherical aluminum oxide catalyst carrier. And finally, soaking with a carbon dioxide aqueous solution to enable the original spherical aluminum oxide catalyst carrier to naturally crack into two hemispheres, and finally, washing, drying and roasting to obtain the hemispherical aluminum oxide catalyst carrier. The method is simple to operate, the yield of the hemispherical aluminum oxide catalyst carrier reaches 98% or above, the method has the advantages of being efficient, practical, high in yield and the like, industrial production can be achieved, the hemispherical aluminum oxide catalyst carrier retains the physical characteristics of an original spherical aluminum oxide carrier, and meanwhile the outer specific surface area is increased by 50%.

The invention provides a multi-modal data fusion characterization method and a multi-modal data fusion characterization system for commercial vehicle frame performance prediction, which are applied to the technical field of vehicle frame data modeling. Extracting structure topological parameters, section construction parameters, material attribute parameters, connection parameters, P-S-N curve data and field response data, and forming a target domain data set and an independent test set; then establishing a frame full-parameterization finite element model, combining actual measurement load spectrum statistics and derivation to generate a virtual load sample, extracting a two-dimensional load damage characteristic matrix, and constructing a source domain data set; and finally mapping the geometric topology feature, the parameter feature, the connection feature and the load feature to a unified three-dimensional voxel space to generate a three-dimensional multi-channel engineering data tensor. According to the method, the commercial vehicle frame sample construction efficiency, the multi-modal data utilization efficiency and the generalization ability of the performance prediction model can be improved.

The invention discloses a freeze-drying preparation method of second-phase particle dispersion nano tungsten-nickel-iron composite powder, which comprises the following steps: 1, adding rare earth nitrate, a salt solution and a surfactant into deionized water, and carrying out ultrasonic treatment to form a uniform precursor mixed solution; 2, performing freeze drying after pre-freezing treatment to obtain precursor powder; and thirdly, the precursor powder is subjected to calcination treatment and a two-step reduction process, and second-phase particle dispersion nanometer tungsten-nickel-iron composite powder is obtained. According to the preparation method, the precursor powder with the submicron particle size and highly concentrated particle size distribution is prepared by combining rapid pre-freezing with a freeze-drying process, and high-purity and high-uniformity compounding of tungsten-nickel-iron and second-phase particles is realized by combining subsequent calcination and reduction; the second-phase oxide particle dispersion nano tungsten-based composite powder with high purity and good uniformity is obtained, controllable preparation of superfine nano powder is achieved, and the method has good process amplification potential and is suitable for the field of powder preparation engineering.

The application provides a kind of commercial vehicle frame performance prediction multi-modal data fusion representation method and system, applied to vehicle frame data modeling technical field, the method first carries out automatic mining to multi-source heterogeneous engineering data, extracts structure topological parameter, section configuration parameter, material attribute parameter, connection parameter, P-S-N curve data and field response data, and forms target domain data set and independent test set;Then establish the full parameterization finite element model of frame, combined with the virtual load sample generated by statistical derivation of measured load spectrum, extract two-dimensional load damage feature matrix, and construct source domain data set;Finally, the geometric topological feature, parameter feature, connection feature and load feature are mapped to a unified three-dimensional voxel space, generating a three-dimensional multi-channel engineering data tensor.The application can improve the efficiency of commercial vehicle frame sample construction, multi-modal data utilization efficiency and the generalization ability of performance prediction model.

The invention relates to use of selected materials in systems for heat treatment, various forms of such material, related systems and methods for determining such materials. In particular the invention relates to the use of a cover of analumina- chromium alloy material with a Cr content of more than 5w% (percent by weight) for one or more parts within a system suited for heat treatment.