57results about How to "Give full play to excellent performance" patented technology

The invention provides basalt fiber and glass fiber mixed reinforced resin, as well as a preparation method and application thereof, and relates to the technical field of composite materials. The preparation method comprises the following steps: adding a coupling agent into a graphene oxide solution to treat mixed fiber consisting of basalt fiber and glass fiber, and carrying out the low temperature plasma process to obtain a modified reinforced material; preparing the basalt fiber and glass fiber mixed reinforced resin from the modified reinforced material and nano-zirconia-blended thermosetting resin through a curing molding process. The preparation method is simple in process; a fiber reinforcing body and resin are both subjected to certain modification treatment, so that the reinforced resin is extremely high in consistency; meanwhile, with the excellent characteristics of the basalt fiber and the glass fiber, the reinforced resin is high in mechanical property and corrosion resistance, can be applied to the field of building materials, and has a good development and application prospect.

The invention provides a carbon nanotube composite plastic and a preparation method thereof, and relates to the field of composite materials. The carbon nanotube composite plastic is formed through processing raw materials comprising a plastic and a carbon nanotube complex. A preparation method of carbon nanotube powder comprises the following steps: allowing a carbon nanotube catalysis element toform nanometer distribution on the surface of maifan stones in order to obtain a catalyst precursor; carrying out high temperature calcination to obtain a catalyst used for producing carbon nanotubes; placing the catalyst in a high temperature device, introducing a mixed gas containing C7 or less organic gases, an inert gas and a reducing gas, controlling the temperature at 500-1200 DEG C, and controlling the air speed of the mixed gas at 0.1-100 h<-1> in order to prepare the carbon nanotube powder. The carbon nanotube complex having an excellent phase connection fully performs the excellentperformances of the carbon nanotubes and the maifan stones and overcomes the disadvantages of the application of existing carbon nanotubes and mainfan stones to the composite plastic when applied to the plastic in the invention.

The invention belongs to the field of hot-rolled roller defect detection, and relates to a treatment method of high-speed steel roller surface cracks. Crack properties are classified through detection of a grinder eddy current flaw detector, and whether cracks are net type hot cracks is determined; shapes of surface cracks are observed through magnetic powder flaw detection to determine whether the cracks are without annular fractures; the determined cracks without the annular fractures are subjected to ultrasonic flaw detection, and whether the inside is in a stable state is determined; and the cracks in an instable state are polished and detected until the cracks are in a stable state. According to the method, various surface cracks can be clearly determined, and inside and outside forms of the cracks can be monitored, so that a correct treatment method can be adopted, and accordingly, a high-speed steel roller is safely used under the condition that part of surface cracks are not required to be cleared.

The invention provides a graphene composite PE material and a preparation method thereof, and belongs to the technical field of PE materials. Comprising the following steps: S1, preparing wrinkled graphene oxide; s2, preparing a wrinkled graphene forehead; s3, preparing the modified folded graphene; s4, preparing a premix; and S5, preparing the graphene composite PE material. The graphene composite PE material prepared by the invention has good mechanical property and barrier property, the antistatic property is obviously improved, the dispersion effect of graphene is good, and the graphene composite PE material has a wide application prospect.

The invention discloses a preparation method of an in-situ growth carbon nanotube / graphene composite sponge. The method comprises the following steps of 1, preparing an oriented graphene sponge, 2, preparing graphene sponge loaded with nickel nitrate, and 3, preparing the carbon nanotube / graphene composite sponge. A chemical vapor deposition method is adopted for in-situ growth of carbon nanotubes in oriented graphene sponge pores, such that the carbon nanotube / graphene composite sponge is obtained. Compared with the prior art, the method for preparing the carbon nanotube / graphene composite sponge has the advantages that the chemical vapor deposition method can regulate and control the morphology of the carbon nanotube by adjusting the nickel nitrate concentration and the vapor deposition time, so that the internal structure of the composite sponge is adjusted, different use requirements are met, and the application range of the composite sponge is expanded. Meanwhile, the in-situ grown carbon nanotubes not only improve the conductivity of the composite sponge, but also improve the mechanical properties of the composite sponge.

The invention discloses a manufacturing method of a heat exchanger based on combination of vacuum hot melting and explosion cladding. The method comprises the steps that a tungsten plate with a certain groove profile is selected to be used as a substrate, and micro-machining is carried out on the groove profile according to requirements; the interface of the tungsten plate is cleaned up, a stainless steel pipe is preset at a certain position of the tungsten plate, and the tungsten plate is placed in a specially-made mold; a copper block or a copper plate used for covering the plate is placed on the tungsten plate and the stainless steel pipe, the copper block or copper plate, the tungsten plate and the stainless steel pipe are put into a vacuum high-temperature furnace together, when the temperature is heated to 1083.4 DEG C-1300 DEG C, copper is fully melted, while both the stainless steel pipe and tungsten are not melted; part of the molten copper flows into the tungsten groove, thestainless steel pipe is immersed at the same time, and under the mechanical action of the high-temperature liquid and the mechanical action of the groove profile, preliminary compositing of cover plate copper and substrate tungsten is achieved; the material is taken out from the vacuum high-temperature furnace after cooling; the stainless steel pipe is removed according to the size of the preset stainless steel pipe, and a heat exchange channel of the heat exchanger is formed; and hole expansion is carried out by using an explosive cladding method, and explosion fiber is inserted into the channel for explosion so as to enable the copper to be tightly cooperated with the tungsten.

The invention provides epoxy resin with modified organic silicon. The main purpose by using organic silicon for modification is to increase toughness and reduce internal stress of the epoxy resin. Toughening effect of the epoxy resin with organic silicon added in depends on phase domain size and distribution of a second phase in an epoxy resin system, and further self features, system solidifying conditions and the like are important factors affecting the toughening effect. In order to obtain the optimum toughening effect, two standards should be met: toughening agent or modifying agent initially can be dissolved in the resin and precipitates to form dispersed phase particles before gel coagulating; and resin matrix should have high-degree plastic ductility, and cross-linking density, rigidity of curing agent, functionality degree and the modifying agent should be appropriate. In addition, forming of a cross-linked structure of the epoxy resin is affected by various factors and determines performance of cured matters. The cross-linking density is a most frequently-used parameter for indicating physical performance of the modified resin, the toughening effect is directly related with the cross-linking density, and the higher the cross-linking density of the epoxy resin is, the higher glass transition temperature is and the larger the toughening difficulty is.

The invention discloses a preparation method of an in-situ synthesized titanium-based composite material composite laminated component, and relates to the field of metal-based composite materials. Themethod comprises the following steps: A, carrying out linear cutting machining on a titanium alloy base material and a titanium-based composite material plate sample; B, performing surface treatmenton the plate sample; C, tightly attaching at least one layer of the titanium alloy base material and at least one layer of the titanium-based composite material plate sample to obtain a composite plate component, and coating the surface of the composite plate component with a BN solution, putting the coated component into a pressure mold, and fixing; and D, carrying out heat insulation on the composite board component at 850-950 DEG C under 5-15 MPa for 0.5-1.5 h to obtain the titanium-based composite material double-layer board or multi-layer board component without the interface cavity defect. The interface shear strength of the composite component is 640-670 MPa, the composite component has good strength and plasticity, a new solution is provided for machining of the high-strength-and-toughness titanium-based composite component, and the composite component has far-reaching strategic significance in preparation of the ultrahigh-strength multi-layer composite component.

The invention provides a graphene composite lubricating grease and a preparation method thereof. Base oil, graphene, a high-molecular acid, calcium hydroxide, a low-molecular acid, and lithium hydroxide are used as raw materials, and after two times of saponification, the lubricating grease is prepared. The base oil and graphene are uniformly fed in two times, and the lubricating grease has advantages of good colloid stability, high dropping point, excellent friction reducing performance and excellent oxidation resistance.