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

A polycrystalline silicon reactor 1 which can prevent polycrystalline silicon which deposits on the surface of an electrode 5 holding a silicon seed rod 4 from being peeled off is provided. In a polycrystalline silicon reactor 1 which applies an electric current to a silicon seed rod 4 provided within a furnace, thereby heating the silicon seed rod 4, brings a source gas supplied into the furnace into reaction, and deposits polycrystalline silicon on the surface of the silicon seed rod 4, the reactor includes, at a bottom plate 2 (furnace bottom) of the furnace, an electrode holder 10 provided so as to be electrically insulated from the bottom plate 2 (furnace bottom), and a seed rod holding electrode 15 connected to the electrode holder 10, and holding the silicon seed rod 4 toward the upside. Concavo-convex portions (male thread portion) 15B exposed to a furnace atmosphere is provided at an outer peripheral surface of the seed rod holding electrode 15.

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.

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 discloses a honeycomb sandwich layer structure and a preparation method thereof. The preparation method comprises the following steps of coating the upper surface and the lower surface respectively of a honeycomb core material with a layer of sticking substances; coating the upper surface and the lower surface of the honeycomb core material coated with the sticking substances with alayer of prepreg respectively; vacuumizing the honeycomb core material coated with the prepreg and curing the honeycomb core material coated with the prepreg under an atmospheric pressure to obtain the pretreated honeycomb core material; vacuumizing the pretreated honeycomb core material and curing the pretreated honeycomb core material to make the pretreated honeycomb core material shape up so asto obtain the honeycomb sandwich layer structure. The honeycomb sandwich layer structure is low in cost, and can prevent collapse of honeycomb materials.

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.

The invention provides an aggregate surface strengthening method and equipment, and belongs to the technical field of aggregate strengthening. The aggregate surface strengthening method provided by the invention comprises the following steps: sequentially carrying out shaping treatment, wetting treatment and first screening treatment on aggregate, then mixing the aggregate with aluminate cement slurry, and then sequentially carrying out second screening treatment, third screening treatment and maintenance treatment. The aluminate cement slurry (with the mass ratio of aluminate cement to waterto the polycarboxylate superplasticizer to hydroxypropyl methyl cellulose is 1: (0.20-0.6): (0.002-0.20): (0.002-0.004)) with specific composition is adopted to wrap the aggregate, so that the strength of the aggregate is improved, and the second screening treatment, the third screening treatment and the maintenance are controlled, so that the surface strengthening of the macropore (with the sizeof greater than or equal to 0.1 mm) and porous aggregate(with the porosity is greater than or equal to 30%) is realized. The method and equipment are suitable for mass production.

The invention relates to rubber recycled concrete and a preparation method thereof. The mass ratio of cement to natural coarse aggregate to recycled coarse aggregate to natural fine aggregate to recycled fine aggregate to water to rubber powder to nano silicon dioxide to a polycarboxylic acid water reducing agent is 1: (2.03-2.12): (0.87-0.91): (1.04-1.14): (0.47-0.49): (0.46-0.52): (0.011-0.057): (0.005-0.031): (0.011-0.026), the water-binder ratio of the rubber recycled concrete is 1: (2-2.17), the recycled fine aggregate and the recycled coarse aggregate are waste gas concrete, the natural fine aggregate is natural river sand, the natural coarse aggregate is limestone gravel, the particle size of the recycled fine aggregate is 0.075-4.75 mm, the particle size of the recycled coarse aggregate is 5-20 mm, the particle size of the natural fine aggregate is 0.075-4.75 mm, and the particle size of the natural coarse aggregate is 5-25 mm. According to the rubber recycled concrete disclosed by the invention, waste gas concrete and rubber can be utilized, the rubber recycled concrete has excellent mechanical properties, and the problem of poor compression resistance of recycled concrete in the prior art is solved.

The invention provides repair mortar, and a preparation method and a construction method thereof. The repair mortar comprises the following raw materials: Portland cement, an expanding agent, a polymer emulsion, a viscosity modifier, water, a powder water reducing agent, composite fibers, super absorbent resin and sand. The preparation method comprises the following steps: S1, uniformly mixing wollastonite acicular powder, potassium feldspar powder and the polymer emulsion to prepare a mixture A; S2, uniformly mixing the Portland cement, magnesium oxide, a viscosity modifier, the powder waterreducing agent, the composite fibers, the super absorbent resin and the sand to obtain a mixture B; and S3, uniformly mixing water with the mixture A and the mixture B to prepare the repair mortar. The construction method comprises the following steps: step W1, pretreating a construction surface of a concrete matrix to be repaired; and step W2, directly molding the repair mortar prepared in the step S3 on a pretreated construction surface. The repair mortar provided by the invention has good thixotropy.

A liquid ejecting head includes a flow path forming substrate, a vibration plate that is formed on one surface side of the flow path forming substrate, a plurality of piezoelectric elements that are provided on the vibration plate, a protective substrate that is bonded to the one surface side of the flow path forming substrate and has a flow path, a flow path member that is bonded to a side of the protective substrate opposite to the flow path forming substrate, a drive circuit that is mounted in a space formed so as to be surrounded by the flow path forming substrate, the protective substrate, and the flow path member, a filler that is filled between the drive circuit and the protective substrate, and a protective film that is formed on an inner wall, in which the protective film has an exposure hole exposing a surface of the filler.

The invention discloses a high rigidity high toughness polypropylene anti-static composite material and a preparation method thereof. In the prior art, the cost of the materials of a thin-wall light anti-static turnover box, a foldable anti-static turnover box, and an anti-static turnover car chassis with a large load capacity is high, and the performance of the materials is not good. In order tosolve the problems mentioned above, the invention provides a high rigidity high toughness polypropylene anti-static composite material. The cost of the composite material is low. The composite material can be easily applied to industrial production and application, and is an ideal material for producing a thin-wall light anti-static turnover box, a foldable anti-static turnover box, and an anti-static turnover car chassis with a large load capacity.

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 preparation method of high-strength anti-crack and anti-impact concrete and the high-strength anti-crack and anti-impact concrete prepared by the method. According to the method provided by the invention, industrial solid wastes such as the copper slag and the slag are utilized, so that the consumption of cement is reduced, the economic cost is saved, and meanwhile, natural resources are protected. The wet grinding treatment mode improves the pozzolanic activity of the copper slag and the slag to a greater extent, so that the impact-resistant concrete has higher compressive strength, breaking strength and tensile strength.

The invention belongs to the technical field of shell packaging, and particularly relates to a matte composite film with high heat sealability. The matte composite film comprises a plain foil layer, a protective layer is arranged on the matte surface of the plain foil layer, the protective layer is made of a metal surface treating agent, a film is arranged on the protective layer, and the film and the protective layer are connected through a modified polyurethane adhesive; a special protective layer is arranged on the bright surface of the plain foil layer, an improved surface film-forming agent is adopted in the special protective layer, a multifunctional inner layer is arranged on the protective layer, and the overall thickness of the aluminum-plastic film is 111-155 [mu]m. By manufacturing the special protective layer, corrosion of a low-molecular-weight strong solvent in the electrolyte can be blocked, and the composite strength of the inner layer is improved. And due to the use of the swelling-resistant modified polypropylene or polyethylene, the heat-sealed bonding structure does not have great structural change in a strong solvent soaking environment of electrolyte, so that the heat sealing performance and the chemical resistance of the heat-sealed bonding structure are improved.