33results about How to "Improve bonding interface" patented technology

The invention relates to a double-component epoxy adhesive for bonding ceramics, a preparation method and using method thereof, belonging to the adhesive field, and aiming at solving the technical problem that the interfacial stress is overhigh owning to great difference of linear expansion coefficients when the existing epoxy adhesive is used for bonding the ceramics. The component A of the double-component epoxy adhesive is prepared by E-44 epoxy resin, E-51 epoxy resin, carboxy terminal butadiene-acrylonitrile, ground quartz, carbon fiber, carbon nano tube, SiC crystal whisker and ultraviolet absorber UV-531, the component B of the double-component epoxy adhesive is prepared by 3-diethylin propylamine, silane coupling agent KH-550, accelerating agent DMP-30 and ground quartz, and the double-component epoxy adhesive is prepared by a mixing method. When the adhesive is used, the adhesive is coated on a surface to be adhered for superimposition and solidification; and the shearing strength of the adhesive can reach more than 60MPa when the adhesive is used for bonding SiC ceramic; the bonding interface is good, an obvious mechanical embedding function is realized between an adhesive layer and a parent metal, and the defects such as cracks, air holes and the like do not exist in the adhesive layer.

A silicon epitaxial wafer having a silicon epitaxial layer grown by vapor phase epitaxy on a main surface of a silicon single crystal substrate, wherein the main surface of the silicon single crystal substrate is tilted with respect to a [100] axis at an angle θ in a [011] direction or a [0-1-1] direction from a (100) plane and at an angle Φ in a [01-1] direction or a [0-11] direction from the (100) plane, the angle θ and the angle Φ are less than ten minutes, and a dopant concentration of the silicon epitaxial layer is equal to or more than 1×1019 / cm3. Even when an epitaxial layer having a dopant concentration of 1×1019 / cm3 or more is formed on the main surface of the silicon single crystal substrate, stripe-shaped surface irregularities on the epitaxial layer are inhibited.

The invention discloses wear-resistant and slip-resistant rubber and a preparation method thereof. The preparation method includes the steps of firstly, using silane coupling agent to modify short fibers to obtain modified short fibers, wherein the short fibers are at least one of carbon fibers, glass fibers and basalt fibers, and the use amount of the silane coupling agent is 0.1-1.5% of the mass of the short fibers; secondly, weighing natural rubber, cis-butadiene rubber, nitrile butadiene rubber and the modified short fibers to serve as the rough blank; mixing part of the rough blank; thirdly, adding magnesium oxide, silane, stearic acid, accelerant and active agent into the rest of rough blank, and mixing with the mixed materials obtained in the second step, wherein the accelerant and the active agent are sequentially added into the rough blank; fourthly, performing vulcanization shaping on the mixed materials obtained in the third step to obtain the wear-resistant and slip-resistant rubber. The wear-resistant and slip-resistant rubber has the advantages that an outsole made of the wear-resistant and slip-resistant rubber is good in wear resistance and slip resistance, and the wear-resistant and slip-resistant rubber is suitable for being used to produce the outsole of a tennis shoe and other outsoles with high wear resistance and slip resistance requirements.

An optical cover plate for image sensor package includes a transparent substrate, at least an annular dam structure, and a barrier layer. The annular dam structure is disposed on the transparent substrate and encompasses a light-receiving area. The barrier layer conformally covers at least a sidewall of the annular dam structure. A method of manufacturing the optical cover plate, an image sensor package and fabrication method thereof are also disclosed.

A silicon epitaxial wafer having a silicon epitaxial layer grown by vapor phase epitaxy on a main surface of a silicon single crystal substrate, wherein the main surface of the silicon single crystal substrate is tilted with respect to a [100] axis at an angle θ in a [011] direction or a [0-1-1] direction from a (100) plane and at an angle φ in a [01-1] direction or a [0-11] direction from the (100) plane, the angle θ and the angle φ are less than ten minutes, and a dopant concentration of the silicon epitaxial layer is equal to or more than 1×1019 / cm3. Even when an epitaxial layer having a dopant concentration of 1×1019 / cm3 or more is formed on the main surface of the silicon single crystal substrate, stripe-shaped surface irregularities on the epitaxial layer are inhibited.

A polycrystalline silicon reactor which can prevent polycrystalline silicon which deposits on the surface of an electrode holding a silicon seed rod from being peeled off is provided. In a polycrystalline silicon reactor which applies an electric current to a silicon seed rod provided within a furnace, thereby heating the silicon seed rod, brings a source gas supplied into the furnace into reaction, and deposits polycrystalline silicon on the surface of the silicon seed rod, the reactor includes, at a bottom plate of the furnace, an electrode holder provided so as to be electrically insulated from the bottom plate, and a seed rod holding electrode connected to the electrode holder, and holding the silicon seed rod toward the upside. Concavo-convex portions exposed to a furnace atmosphere is provided at an outer peripheral surface of the seed rod holding electrode.

A method for limiting slip lines in a semiconductor substrate including a support layer and a useful semiconductor layer that is transferred to the support layer. The method includes precipitating at least a portion of interstitial oxygen in the support layer by a series of heat treatments conducted after bonding of the useful semiconductor layer to the support layer. The heat treatments occur at a temperature and a time sufficient to reduce the generation of slip lines therein.

The invention belongs to the field of concrete, and particularly discloses a powdery rough surface agent for concrete and a preparation method of the powdery rough surface agent, which have the advantages of low packaging cost, convenience in transportation, ready-to-use preparation, long storage period and the like compared with a slurry powdery rough surface agent in the prior art. When the powdery rough surface agent for the concrete is in use, only water needs to be added and stirred into paste, after concrete pouring is completed, the powdery rough surface agent for the concrete is brushed or sprayed on the surface of the concrete, after the concrete is finally set for 24 to 72 hours, the surface of the concrete is washed with normal-pressure water, the slurry on the surface of the concrete can be washed away by 2.0-5.0 mm very easily, the effect that the aggregate is fully exposed on the surface of the concrete is achieved, the stability of the surface of the concrete is not disturbed or damaged, the internal structure of the concrete is not affected, and a good bonding interface is provided for lower-layer construction and surface decoration of the concrete.

Disclosed herein are a method for manufacturing an electronic component embedding substrate and an electronic component embedding substrate. The method for manufacturing an electronic component embedding substrate includes: inserting an electronic component into a cavity formed in a core substrate; stacking a first insulating layer on one side of the core substrate into which the electronic component is inserted; performing surface treatment on the other side of the core substrate opposite to a direction in which the first insulating layer is stacked to improve a surface roughness of at least an exposed surface of the first insulating layer; and stacking a second insulating layer on the other side of the core substrate so as to be bonded to the exposed surface of the first insulating layer of which the surface roughness is improved. In addition, disclosed herein is the electronic component embedding substrate.

The invention provides a vulcanization activator with easy dispersion and good reinforcing performance for blended rubber. The vulcanization activator comprises the following raw materials in parts byweight: 40-70 parts of nano zinc oxide, 25-60 parts of zinc methacrylate, 1-3 parts of oligomer ester, 0.5-1 part of a silane coupling agent and 0.5-2 parts of a dispersing agent. The preparation method comprises the following steps: adopting a chemical deposition method to synthesize a nano mixed material with the zinc oxide as a core and the zinc methacrylate as a shell, preparing a 20-30% solution through cleaning and filtering, adding the oligomer ester and the silane coupling agent, carrying out stirring for 0.5-1 hour, carrying out filtering, and carrying out drying for 2-4 hours to prepare the vulcanization activator for blended rubber. The vulcanization activator for the blended rubber provided by the invention has low zinc content, good dispersibility and no easy agglomeration, and can be used to substitute indirect method zinc oxide with the same amount for mixing with natural rubber, styrene-butadiene rubber and butadiene rubber to prepare the blended rubber, wherein the weight ratio of the natural rubber to the styrene-butadiene rubber to the butadiene rubber is 60:20:20. The physical and mechanical properties of the blended rubber can meet the use requirements of theblended rubber.

The invention provides a composite bumper and a preparation method thereof. The composite bumper includes a bumper base and a polyurethane composite film for covering the bumper base; the polyurethane composite film is composed of thermoplastic polyurethane, a stabilizer and a flame retardant. The preparation method of the composite bumper is as follows: first, the bumper substrate is subjected to polyurethane resin solution infiltration pretreatment, and then a polyurethane composite film is prepared, and finally the polyurethane composite film is coated on the pretreated bumper substrate, and heat The composite bumper was prepared by pressure treatment. The composite bumper prepared by the invention has excellent impact resistance, mechanical properties, heat resistance, ultraviolet resistance and excellent flame retardancy. The preparation method of the invention is simple in operation, low in cost, and easy to popularize and apply on a large scale.

The invention relates to plaster mortar for a thermal insulation system of a foam glass building, which consists of dry materials and admixtures. The plaster mortar is characterized in that the dry materials consist of cement, fly ash and fine sand which account for 20 to 25 percent, 15 to 20 percent, and 55 to 60 percent of the total weight of the dry material respectively; and the admixtures consist of dispersible latex powder, hydroxypropyl cellulose ether, lignocellulose ether, polyacrylamide and anti-cracking fiber yarns which account for 0.30 to 0.35 percent, 0.03 to 0.05 percent, 0.02 to 0.03 percent, 0.08 to 0.1 percent, and 0.10 to 0.12 percent of the total weight of the dry material respectively. The plaster mortar has good workability of the admixture and high bonding strength,and is more suitable for the thermal insulation system of the foam glass building in water resistance, operable time and freeze-thaw resistance.

The invention relates to a composite material for a vehicle bumper and a preparation method thereof. The composite material comprises the following ingredients: 60-80wt% of polypropylene, 5-20wt% of metallocene ethylene / hexene copolymer, 10-20wt% of nano calcium carbonate, 0.4-0.8wt% of antioxidant, 0.2-0.5wt% of lubricant. The preparation method comprises the following steps: uniformly mixing the ingredients according to the ratio in a mixer, mixing, extruding, cooling and dicing the mixture in a double screw extruder to obtain the composite material for the vehicle bumper. According to the invention, the polypropylene / metallocene ethylene / hexene copolymer / nano calcium carbonate composite material is prepared by using metallocene ethylene / hexene copolymer as an elastomer component and nano calcium carbonate with a particle size of less than 100nm as an enhancing toughening component, with the advantages of good impact resistance, good low temperature resistance, good weatherability, and good rigid, being capable of being sprayed, and being suitable for ornaments with high requirement of toughness such as the vehicle bumper.

The invention relates to bonding mortar used in a foam glass building heat insulation system. The bonding mortar consists of a dry material and an admixture. The bonding mortar is characterized in that the dry material consists of cement, fly ash, fine sand and coarse sand which respectively account for 20%-25%, 10%-15%, 45%-50% and 10%-20% of the total weight of the dry material; the admixture consists of dispersible emulsion powder, methyl cellulose ether and polyacrylamide which respectively account for 0.20%-0.25%, 0.03%-0.05% and 0.08%-0.10% of the total weight of the dry material. The bonding mortar has good mixture workability and high bonding strength, and is more applicable to the foam glass building heat insulation system in terms of the water resistance and the operable time.

The invention relates to the method of beam cap connection for lengthening wind turbine generator blades. The method is particularly adopted for connecting beam caps of the blades in the lengthening and improving process of existing wind turbine generator blades. Each reinforced beam cap is manufactured in a beam cap reserved zone between one existing beam cap of one blade and the corresponding beam cap of one blade tip lengthening section, so that the problem of connection of every two existing beam caps is solved. The blades which are lengthened and improved through the method for connecting the beam caps of the wind turbine generator blades are safe and reliable in structure.

An optical cover plate for image sensor package includes a transparent substrate, at least an annular dam structure, and a barrier layer. The annular dam structure is disposed on the transparent substrate and encompasses a light-receiving area. The barrier layer conformally covers at least a sidewall of the annular dam structure. A method of manufacturing the optical cover plate, an image sensor package and fabrication method thereof are also disclosed.

The invention provides a repair mortar, its preparation method and construction method. The repair mortar includes raw materials: Portland cement, expansion agent, polymer emulsion, viscosity modifier, water, powder water reducer, composite fiber , super absorbent resin and sand. The preparation method includes step S1, mixing wollastonite needle powder, potassium feldspar powder and polymer emulsion to obtain mixture A; step S2, mixing portland cement, magnesium oxide, viscosity modifier, powder The water reducer, the composite fiber, the superabsorbent resin and the sand are mixed uniformly to prepare a mixture B; in step S3, water is uniformly mixed with the mixtures A and B to prepare a repair mortar. The construction method includes step W1, pretreating the construction surface of the concrete matrix to be repaired; step W2, directly forming the repair mortar prepared in step S3 on the pretreated construction surface. The repair mortar described in the invention has better thixotropy.