250 results about "Bond line" patented technology

The invention provides a heat dissipation composite material and a preparation method and application thereof. The heat dissipation composite material comprises a bonding layer, an insulating breathable layer, a heat conduction layer and a heat conduction diffusion layer which are sequentially arranged from bottom to top. Wherein the bonding layer is obtained by mixing and reacting a polymer matrix material, a composite filler and a molecular bridging agent, the insulating breathable layer is a porous insulating material, the heat conduction layer is a graphene film, and the heat conduction diffusion layer is prepared from porous matrix composite heat conduction nanoparticles. According to the invention, through combination and structural design of each layer of material, a synergistic effect of a multi-layer structure is realized, firm and stable bonding of the heat dissipation composite material and a heating electronic device is realized, the heat dissipation efficiency and insulation air permeability of the heat dissipation composite material are remarkably improved, and the heat dissipation requirement of high-power-density electronic equipment can be met.

The invention discloses a surface protective film and a preparation method thereof, and belongs to the technical field of protective films. The surface protection film comprises a surface layer, a core layer and a bonding layer which are arranged in sequence, the surface layer comprises first polypropylene matrix resin, an organic ultraviolet absorbent and an inorganic ultraviolet screening agent; the core layer comprises second polypropylene matrix resin, polyaryletherketone nanofibers and flaky mica powder of which the surface is coated with cerium oxide; the bonding layer comprises a thermoplastic SEBS elastomer, hydrogenated bonding resin, an organic zinc compound, an ultraviolet light stabilizer and a plasticizer containing an epoxy group. The surface protection film has excellent ultraviolet aging resistance and high temperature resistance, the adhesive force can still be kept within a certain range under the conditions of ultraviolet radiation and high temperature, the surface protection film can be easily unwound under the condition of high temperature, and no residual adhesive is separated out.

The invention belongs to the technical field of binding force testing, and particularly relates to a composite current collector binding force testing device and method.The composite current collector binding force testing device comprises a testing rack, a hot-pressing assembly is installed on the surface of the testing rack, and the hot-pressing assembly is used for conducting hot-pressing binding on a composite current collector three-layer composite sample; the composite current collector three-layer composite sample comprises a test main body layer, a bonding layer and a supporting layer which are sequentially stacked, a force measuring assembly is installed on one side of the hot pressing assembly, the force measuring assembly is used for testing the binding force of the composite current collector three-layer composite sample, the force measuring assembly comprises two clamps, and the two clamps are used for clamping a testing main body layer and a supporting layer of the composite current collector three-layer composite sample respectively. The three-layer composite sample of the composite current collector is subjected to hot-pressing lamination through the hot-pressing assembly, so that the bonding layer is firmly bonded with the metal layer of the test main body layer, and when a test is carried out through the force measuring mechanism, the metal layer can be completely separated, and the accuracy of binding force test data is ensured.

The invention relates to the technical field of adhesive tapes, and discloses a high-viscosity power-on viscosity-reducing adhesive tape and a preparation method thereof.The adhesive tape comprises an adhesive layer and release films attached to the two sides of the adhesive layer, the adhesive layer is prepared by adopting acrylate monomers, a carbon nano tube modification functional agent and the like as raw materials through free radical polymerization, and the release films are attached to the two sides of the adhesive layer; wherein the carbon nanotube modified functional agent is prepared by modifying a macromolecular substance with a block connection structure on the surface of a carbon nanotube, and the macromolecular substance contains an alkenyl functional group and can participate in the subsequent polymerization process of an acrylate monomer, so that the carbon nanotube is uniformly dispersed to form a continuous conductive network; compared with the prior art, the high-temperature-resistant adhesive has the advantages that the high-temperature-resistant performance of the adhesive can be improved, electrifying viscosity reduction of the adhesive is facilitated, the macromolecular substance can serve as a cross-linking agent, cohesive energy of the adhesive is improved, the adhesive performance of the adhesive can be further improved, and in addition, rigid rings and a large number of ether bonds in the structure of the macromolecular substance can effectively enhance the high-temperature-resistant performance and the adhesive performance of the adhesive.

The invention discloses a method for industrially producing a micro-particle conductive aggregate. The method comprises the following steps: pretreating glass beads to obtain a micron-sized rough surface; preparing conductive paste containing large-particle graphene and water-based acrylic resin; at least three continuous spraying fluidized beds which are connected in series are adopted, and the surfaces of the microbeads are coated with bonding layers, conductive layers and protective layers in sequence; and finally, continuous curing and screening are carried out. According to the method, efficient, continuous and large-scale production of the conductive aggregate is achieved, and the problems that graphene is prone to agglomeration and uneven in dispersion and the coating binding force of a traditional process is poor are effectively solved. The obtained conductive aggregate is excellent in conductivity, good in solvent resistance, high in adhesive force and suitable for the fields of anti-static mortar, resin self-leveling materials, coatings and the like.

To provide an ultrasonic probe high in water resistance and chemical resistance.SOLUTION: An ultrasonic probe comprises an ultrasonic transducer (28), a metal inner housing that is thermally connected to the ultrasonic transducer (28), and a probe case for enclosing the inner housing. Bond lines (250 and 252) of the probe case and bond lines (314 and 316) of the inner housing are mutually offset in a height direction.SELECTED DRAWING: Figure 7

The invention relates to a high-moisture-resistance scratch-resistant protective film base film for a polaroid. The base film comprises a functional laminating layer, a protective film layer and a protective film layer from bottom to top, wherein the functional laminating layer comprises intercalation modified montmorillonite, graphene nanosheets, an antistatic agent and optical-grade PET (Polyethylene Terephthalate); the surface wear-resistant layer comprises wear-resistant modified PET (Polyethylene Terephthalate), functional nano filler, an ultraviolet absorbent and optical-grade PET. The functional fitting layer is in contact with a polarizer pressure-sensitive adhesive, the moisture resistance of the film is improved by combining original intercalation modified montmorillonite with a graphene nanosheet, long-acting protection is provided for a polarizer core layer, and meanwhile, an antistatic agent is introduced to ensure that no electrostatic discharge damage risk exists when the protective film is stripped; the wear-resistant layer on the outer surface improves the hardness and scratch resistance of the film through the synergistic effect of modified PET containing silicon and naphthalene ring structures and functional nanofiller; and the middle bonding layer effectively solves the problem of compatibility between the functional bonding layer and the outer surface layer, so that the stability and firmness of the multi-layer co-extrusion structure are ensured.

The application provides a rigid-flexible combination plate manufacturing method and a rigid-flexible combination plate. The rigid-flexible combination plate comprises two rigid plates, a plurality of flexible plates, an outer adhesive layer between the rigid plates and the flexible plates, and an inner adhesive layer between every two flexible plates. The method comprises the following steps: S1, flexible plate processing; S2, adhesive layer processing: respectively reserving rigid areas and flexible window areas of the outer adhesive layer and the inner adhesive layer; S3, pressing: pressing and fusing the reserved rigid areas and the flexible window areas of the outer adhesive layer and the inner adhesive layer; and S4, uncovering: milling off the rigid areas and the flexible window areas of the outer adhesive layer and the inner adhesive layer respectively or together to expose the flexible areas. After uncovering, the flexible layer part waste fused after pressing is removed together with the upper rigid waste area, so that the defects of cracking and pressing are effectively avoided, and the processing quality of the plate part is effectively ensured.

The application discloses a manufacturing method of bonded magnetic steel, comprising the following steps: 1) providing a plurality of pretreated rare earth permanent magnets, and then forming an insulating film on at least one surface to be bonded of the pretreated rare earth permanent magnets to obtain a rare earth permanent magnet with an insulating film; wherein the thickness of the insulating film formed on one surface to be bonded is 0.1-10 µm; 2) bonding the rare earth permanent magnet with the insulating film in step 1) in sequence by using a pure resin binder without a second material to obtain a bonded rare earth permanent magnet; wherein the second material is a solid insulating filler; 3) pressing and curing the bonded rare earth permanent magnet to obtain the bonded magnetic steel; wherein the thickness of the cured bonding layer formed between two adjacent rare earth permanent magnets is 8-40 µm. The method can balance the effective volume and the consistency of the interlayer resistance of the obtained bonded magnetic steel.

The invention provides a PET enhanced PE foam composite material which comprises a PE foam base material layer, a bonding layer and a PET base material layer, the bonding layer is located between the PE foam base material layer and the PET base material layer, the PE foam base material layer is made of PE foam with the density being 0.05-0.3 g / cm < 3 > and the average cell diameter being 50-200 microns, the bonding layer is made of an acrylate adhesive with the thickness being 0.01-0.05 mm, and the PET base material layer is made of a PET adhesive with the thickness being 0.01-0.05 mm. The PET base material layer adopts a transparent PET film original film with the thickness of 0.01-0.1 mm, the prepared foam composite material has excellent mechanical properties, excellent structural stability and multifunctional integration, the adopted preparation method is simple in process, controllable in operation, clear in parameters of each step and suitable for large-scale industrial production, and by accurately controlling the process parameters, the foam composite material can be used for preparing a foam composite material with good mechanical properties. And the composite material with excellent performance can be stably produced.

The invention relates to the technical field of coatings, and discloses a waterproof composite coating for a non-stick pan and a preparation method of the waterproof composite coating, the composite coating sequentially comprises a transition bonding layer, a waterproof blocking layer and a surface non-stick layer from inside to outside, and each layer is prepared from raw materials in a specific proportion. The transition bonding layer takes titanium carbide, potassium feldspar and the like as main raw materials, the waterproof blocking layer comprises bisphenol A epoxy resin, modified tea polyphenol and the like, and the surface non-stick layer takes polytetrafluoroethylene as a core. The preparation method sequentially comprises the steps of substrate pretreatment, transition bonding layer preparation, waterproof barrier layer preparation and surface non-sticky layer preparation, and the process is simple and controllable. The composite coating has excellent waterproof performance, firm binding force with a base body and good non-stick performance, the service life of the non-stick pan can be effectively prolonged, health risks caused by coating damage are reduced, and the composite coating is suitable for large-scale production.

The utility model provides an ultrasonic welding and bonding mechanism and a bag opening machine, and the ultrasonic welding and bonding mechanism comprises a fixed support, an ultrasonic welding and bonding mechanism and an ultrasonic welding and bonding mechanism, a sliding connection seat; the ultrasonic welding machine is fixed to the sliding connecting base and provided with a welding head which is arranged in the vertical direction and extends to the position below the sliding connecting base; the welding driving part is used for driving the sliding connecting seat to move up and down so as to enable the welding heads to be in contact with the cutting piece, and the welding driving part drives the sliding connecting seat to move downwards before bag opening processing so as to enable the welding heads to carry out welding and bonding treatment on the two sides of the preset bag opening position respectively so as to form bonding lines. During bag opening processing, a cutting piece is firstly transferred to an ultrasonic bonding mechanism, an ultrasonic welding machine is started to weld and bond the cutting piece, bonding lines are formed on the two sides of a preset bag opening position, and pre-fixation can be formed in the short edge direction of the bag opening in advance through the bonding lines, so that filler is prevented from leaking from the two ends of the bag opening, and normal processing is guaranteed; and the production applicability is improved.

Conventional removal tools have difficulty completely removing asbestos-containing adhesive layers, especially those that exist under thin paint or flooring materials. The cutting edge tends to slip on the surface of the adhesive layer, and additional sanding work is required with a sander to remove any remaining adhesive layer, resulting in poor work efficiency. [Solution] In this peeling tool, which is attached to a handheld electric impact device, the flat blade base, consisting of the base end side of the joining notch and the front side of the flat blade, is made of die steel, and the cutting edge is made of high-speed steel, allowing the cutting edge to penetrate into the concrete surface even in thin adhesive layers, enabling efficient and reliable peeling and removal of the adhesive layer. Setting the inclination angle of the cutting edge to 15° to 45° enables even more effective removal.

The application provides a multilayer protective film and a preparation process thereof. The structure of the multilayer protective film comprises an outer surface layer, a first adhesive layer, a support layer and a second adhesive layer arranged in sequence, wherein the support layer is a polyamide layer. The preparation process of the multilayer protective film adopts a co-extrusion process. Through the arrangement of the structure of the protective film and the reasonable compounding of the formula components, the structural strength and the heat resistance of the battery protective film are effectively improved on the basis of ensuring the safety performance and the insulation performance, the adhesive strength of the adhesive layer is improved, the protective film does not generate thermal shrinkage and thermal deformation in the use process, and the preparation process is simple and the preparation efficiency is high.

The application discloses a kind of encapsulation device and method of chip, encapsulation device includes: lead frame, plastic package, multiple chips, circuit board and tin paste;Lead frame is used to carry each chip;Plastic package is used to the plastic package of lead frame and each chip, lead frame includes base island, pin and pin dimple, base island corresponding two sides are equipped with multiple pins and the pin dimple corresponding with pin, multiple chips are pasted on base island by adhesive, multiple chips are connected pin and base island by bonding line respectively, the lower end of lead frame is connected circuit board by tin paste and forms sealed cavity, lead frame and circuit board are all equipped with through air hole, external air nozzle is communicated with sealed cavity by air hole.The three different chips of the present application are integrated in a standard DFN package, through the structure design of plastic package+base island+air hole, each chip is effectively protected, through the connection of base island and circuit board, through air nozzle to realize air tightness, the performance and stability of product are greatly improved.

An insulated wire and a preparation method therefor, a coil, and an electronic / electrical device are provided. In the preparation method, the thermoplastic polyimide is extruded to mold by adopting the extrusion process, so as to form the insulating layer on the core material, which can significantly improve the production efficiency compared to the traditional multiple-time coating process. The preparation process of the bonding layer and the extrusion process are optimized; the bonding layer is prepared by a specific bonding layer formulation; and then the insulating layer is extruded under a specific negative pressure, so that the prepared thermoplastic polyimide insulating layer has fewer bubbles, and the size of the bubbles is smaller, which ensures the insulating layer to have a higher breakdown voltage.

The present application relates to a kind of antistatic humidity regulating polyester composite fabric and its preparation method.The fabric includes polyester matrix layer, humidity regulating layer, conductive mesh layer and discrete adhesive layer from inside to outside.The humidity regulating layer is polyvinyl alcohol and polyurethane interpenetrating network porous membrane, the thickness is 15-40 μm, and its calcium chloride mass fraction and pore size increase along the film thickness direction, with good humidity regulating performance;The conductive mesh layer is woven by core-sheath type conductive filament, which enhances the antistatic performance of the fabric;Discrete adhesive layer is point-like heat-light curing acrylate adhesive, which ensures stable bonding between layers and maintains good moisture permeability.The preparation method includes freeze-thaw cycle preparation of humidity regulating layer, corona treatment of conductive mesh layer and light curing process of discrete adhesive layer.The composite fabric has excellent humidity regulating effect, antistatic performance and good wearing comfort.

The utility model discloses a splicing mechanism and an electric pole, and relates to the field of power transmission equipment, and the splicing mechanism comprises a first splicing piece, a second splicing piece, a third splicing piece and a fourth splicing piece, the second splicing piece is in plug-in connection with the plug-in port; the sealing assembly comprises a filling cavity formed between the first splicing piece and the second splicing piece and mounting grooves formed in the two sides of the filling cavity, sealing rings are arranged at the two ends of the filling cavity, and the filling cavity is filled with a bonding layer; the mounting grooves are located in the inner walls of the insertion openings. Due to the fact that the electric pole is designed in a segmented splicing mode, the electric pole can be rapidly transported to the position of a vertical pole through the unmanned aerial vehicle in a segmented transportation mode, rapid power recovery in special areas is guaranteed, and power recovery efficiency is effectively improved. After the two adjacent sections of rod bodies are spliced, the two adjacent sections of rod bodies are fixed through adhesive glue, and firmness after splicing is guaranteed. Meanwhile, through the design of a sealing ring, a glue injection hole and a glue outlet hole, the bonding glue cannot leak out from the two ends of the filling cavity during glue injection, and whether the filling cavity is full of the bonding glue or not is conveniently judged.

This application discloses a current collector and a method for preparing a current collector. The method includes: metallizing a conductive layer on the surface of a release substrate to obtain a first structure; depositing an adhesive layer on the surface of a polymer substrate layer; attaching the conductive layer of the first structure to the surface of the adhesive layer away from the polymer substrate layer to obtain a second structure; and peeling off the release substrate of the second structure to obtain the current collector. The current collector and the method for preparing the current collector according to this application can improve the processing efficiency and reliability of the current collector.

The invention provides an MEMS device preparation method and an MEMS device, and the method comprises the steps: providing an MEMS assembly which comprises a first wafer and a first metal bonding layer located on the first wafer; forming an anti-bonding layer on the surface, close to the first metal bonding layer, of the first wafer; removing the anti-bonding layer on the surface of the first metal bonding layer in an illumination mode; providing a second wafer with a second metal bonding layer, and bonding the first metal bonding layer and the second metal bonding layer so as to bond the first wafer and the second wafer to obtain the MEMS device; the invention solves the technical problem that when a functional structure of an MEMS device is covered with a hydrophobic layer, a bonding surface is also covered with the hydrophobic layer, and in the prior art, the hydrophobic layer on the functional layer is difficult to well retain while the hydrophobic layer on the bonding surface is removed, so that the performance of the MEMS device is influenced.

The embodiment of the present application discloses a kind of circuit board and its manufacturing method, circuit board includes: shielding film assembly, shielding film assembly includes the first insulating layer, shielding layer, second insulating layer and adhesive layer of laminated arrangement, adhesive layer is provided with protruding part on the side face of second insulating layer back;Circuit substrate, circuit substrate includes line body and substrate layer, adhesive layer and substrate layer are connected, protruding part is embedded in the gap between line body, and adhesive layer covers line body;Before adhesive layer and substrate layer are connected, the volume ratio of adhesive layer in unit area and the gap volume of circuit substrate is 1~1.8.The embodiment of the present application solves the technical problem that existing shielding film and circuit board exist after pressing, affect appearance flatness, shielding film is not bad, shielding film is excessively pulled and even broken, in turn causes poor shielding effect, and reduces assembly yield.

Provided is a slide fastener tape capable of imparting water repellency to a slide fastener using an organic solvent containing no toluene or MEK as a binder, and a slide fastener using such a slide fastener tape. The present invention relates to a slide fastener tape (10) comprising: a base fabric (11) having a first surface (10a) and a second surface (11b); and a water repellent film (12) attached to at least one of the first surface (10a) and the second surface (11b) of the base fabric (11). The water repellent film (12) has a layered structure comprising a skin layer (14) composed of a polyurethane film and a bonding layer (13) disposed between the skin layer (14) and the base fabric (11) and composed of a cured product of a polyurethane-based adhesive. The polyurethane-based adhesive is obtained by dissolving a polyurethane resin in a solvent containing dimethyl carbonate and propyl acetate. A slide fastener (1) of the present invention comprises the slide fastener tape (10).

The utility model provides a vibrating diaphragm, which belongs to the technical field of vibrating diaphragms, and comprises at least one bonding layer, at least one side of each bonding layer is provided with a conductive layer, the connecting surface of the conductive layer and the bonding layer is a roughening treatment surface or a surface activation treatment surface, and the bonding layer and the conductive layer are in hot-pressing composite connection or bonding connection. According to the utility model, the bonding layer and the conductive layer are directly compounded, so that the requirement of bonding strength is met, the process is simplified, the problem of insufficient thickness of a magnetron sputtering coating can be effectively solved, and the negative influence of a glue bonding process on the compliance of the vibrating diaphragm can be avoided; therefore, the light weight of the planar diaphragm structure, the high sensitivity of the performance and the simplification of the manufacturing process are realized.

An abrasive article comprises a porous substrate having openings extending through the porous substrate between first and second opposed major surfaces. An abrasive coating is disposed on only a portion of a first major surface of the porous substrate. The abrasive coating comprises a functional layer disposed on only a portion of a first major surface of the porous substrate, a make layer disposed on at least a portion of the functional layer opposite the porous substrate, and abrasive particles. The functional layer and the make layer independently comprise chemically crosslinked binders. The functional layer fully occludes a first portion the openings and does not fully occlude a second portion of the openings, which permits passage of abraded swarf through the abrasive article. Methods of making the abrasive article are also disclosed.

According to the high-heat-conductivity aluminum-based copper-clad plate and the preparation method thereof, the heat conductivity coefficient reaches 5.9 W / (mK), and the peel strength is larger than or equal to 1.2 N / mm. A high-heat-conductivity aluminum-based copper-clad plate comprises an aluminum substrate, a copper foil and a heat-conducting glue layer located between the aluminum substrate and the copper foil, a first resin bonding layer is arranged between the aluminum substrate and the heat-conducting glue layer, and a second resin bonding layer is arranged between the copper foil and the heat-conducting glue layer; the thickness of the first resin bonding layer and the thickness of the second resin bonding layer are respectively 5-10 microns; the filling amount of the heat-conducting filler in the heat-conducting glue layer is about 70-85% of the volume of resin in the heat-conducting glue layer, the resin of the heat-conducting glue layer is epoxy resin and phenolic resin, and the resin of the first resin bonding layer and the second resin bonding layer is at least one of epoxy resin and phenolic resin.

To provide a method for producing dry coated sand that can manufacture molds with excellent mold strength and surface strength. [Solution] A method for producing dry coated sand, comprising the step (1) of mixing water with refractory aggregate A having an inorganic binder layer formed on its surface containing an inorganic binder containing a metasilicate hydrate, A method for producing coated sand, wherein the mass ratio of the inorganic binder water (a component of the inorganic binder other than water) to the water in the coated sand (mass of water in the coated sand / mass of the inorganic binder water) is 1.00 to 1.60.

The invention relates to the cross technical field of layered products, grinding tools and polymer compositions, in particular to plant fiber reinforced environment-friendly degradable abrasive cloth which comprises a plant fiber reinforced substrate layer, a primer bonding layer, an abrasive particle layer and a composite adhesive protective layer. According to the abrasive cloth, natural plant fibers serve as a framework, a bio-based resin bonding system is compounded with an inorganic abrasive material, the biodegradation rate of 90% or above can be achieved within 90 days under the composting condition, and meanwhile the tensile strength and the grinding performance are not lower than those of traditional petroleum-based abrasive cloth.

A semiconductor device assembly is provided. The assembly includes a first semiconductor device having an upper surface, a second semiconductor device carried by the first semiconductor device and having a lower surface facing the upper surface of the first semiconductor device, a plurality of interconnects extending from the upper surface to the lower surface and across a bond line having a thickness, and an aluminum nitride material disposed between the upper surface and the lower surface and surrounding each of the plurality of interconnects.

The application provides a heterogeneous adhesive, a preparation method thereof and a flexible printing plate. The heterogeneous adhesive is a polymer; a main chain of the polymer is a polyester structure; the polymer comprises a catechol group and a primary hydroxyl group; and the catechol group and the primary hydroxyl group are located on the main chain and / or a side chain of the polymer. In this way, by arranging the catechol group and the primary hydroxyl group on the polyester structure, a strong and tough adhesive layer can be formed between a metal base and a hydroxyl-rich resin photosensitive layer, and the viscosity of the polymer can be reduced, so that the polymer can be adhered to the metal base and the photosensitive layer by brushing or spraying, and the operation is simple and easy to process.