116 results about "Resin embedding" patented technology

The invention relates to an epoxy resin potting adhesive which consists of component A and component B. By weight portion, the component A consists of 90-130 portions of bisphenol A type epoxy resin, 240-320 portions of filling, 15-25 portions of thinner, 10-25 portions of toughener, 1-2.5 portions of defoamer and 0.8-2 portions of black pigment, and the component B consists of 60-130 portions of estolide and 1-3 portions of imidazole accelerator. The mixing proportion of the component A and the component B is (3-5):1. The invention also provides a preparation method of the epoxy resin potting adhesive. The epoxy resin potting adhesive provided by the invention has low cost and long resting period; after being mixed, the component A and the component B have low viscidity, good wetting quality, good heat resistance, good defoaming performance, good fluidity and long operating time and are solidified between 70 DEG C and 160 DEG C; a product after solidifying has bright surface, good mechanical performance and insulating performance and high glass transition temperature; and the quality of a potting component is stable.

The invention belongs to the technical field of carbon nano tube preparation, in particular relates to a preparation method of an oriented carbon nano tube/ polymer composite membrane. Epoxy resin embedding liquid, a flexibilizer and a carbon nano tube array serve as raw materials, a resin monomer is permeated into the array with a permeating method; then, the obtained product is heated and solidified to form composite material; and finally, a sample is sliced by a slicing machine to obtain the carbon nano tube/ polymer composite membrane. The carbon nano tubes in the membrane are perpendicular to the surface of the membrane and are evenly distributed; the upper surface and the lower surface of the membrane both have good electrical conductivity; in addition, the tail ends of a plurality of carbon nano tubes are opened on the surface of the membrane, which is convenient to modify or catalyze and the like; and the membrane has good flexibility and strength. Thus, the invention provides a new path for preparing the carbon nano tube membrane.

Bi-component epoxy resin pouring sealant and the preparation and the potting technology are disclosed, which comprises an epoxy resin A component and a cursing agent B component, wherein the curing agent B component at least comprises the mixing curing agent of cashew shell oil modified amine curing agent and fatty amine curing agent. The potting technology comprises mixing and stirring evenly the epoxy resin A component and the curing agent B agent to conduct the potting, and spraying a layer of absolute alcohol on the surface of the pouring sealant after 10-15 minutes. The advantages are that gel time is prolonged through adopting the mixing curing agent of cashew shell oil modified amine curing agent and fatty amine curing agent, the requirement of operation time is fulfilled, and the operation time can reach 20-30 minutes, thereby being beneficial for the encapsulation of housing with large capacity, and the pouring sealant of the invention has the effect of fast curing, wherein the curing time is 1-3 hours, and defoaming is accelerated through spraying a layer of absolute alcohol on the surface of colloid after pouring, thereby making the solid gel surface bright and flat after curing.

The invention discloses an epoxy resin curing agent, an epoxy resin pouring sealant as well as the relevant preparation methods. The epoxy resin curing agent comprises 10 to 60 diaminodiphenylmethane, 20 to 70 diaminodiphenyl ether or diaminodiphenylsulfone, and 10 to 40 multi-amine curing agent, all calculated in pbw (part by weight). The preparation method for the curing agent comprises the following steps: mixing and heating the substances, raising the temperature to 90-110 DEG C, then stirring for 1 to 3 hours in thermal insulation state, and finally simply cooling the mixture to room temperature. The curing agent is liquid under normal temperature, and mixes well with the epoxy resin. The epoxy resin pouring sealant comprises 100 pbw epoxy resin which has at least two epoxy groups and is liquid under normal temperature, and 10 to 40 pbw epoxy resin curing agent; the preparation method for the pouring sealant comprises the following steps: adding the epoxy resin curing agent into the epoxy resin, mixing for 10 to 30 minutes, then debubble in vacuum state for 10 to 30 minutes, and finally simply removing the vacuum state. The transition temperature of vitrification for the pouring sealant thus acquired is pretty high, and the compound of epoxy resin cured is excellent in electromechanical and thermal performance.

The present invention relates to a high-powered modified epoxide resin embedding material and the preparation method. The material consists of A liquid and B liquid, wherein A liquid includes epoxide resin modified by polyurethane prepolymerization, organic montmorillonite, filling, and other addition agent, B liquid includes firming agent and accelerant. The embedding material is provided with low poison, good wetting quality and high filling quantity, the condensate is provided with low linear expansibility and good weather resisting property and tenacity; the preparation art of the embedding material is simple, the performance is excellent, and is the same with embedding an electrical apparatus element with wider working temperature range.

The invention relates to a joint construction method for preventing reflection cracks generated during spreading of asphalt on an old concrete pavement. The method comprises the following steps: firstly determining the inter-panel deflection difference of old concrete panels to be jointed for reinforcing; after qualification, cutting across the joints at the joints of the two old concrete panels to obtain equal-distance stripe-type grooves and then vertically drilling the end parts of the stripe-type grooves by using an impact drill; bending a reinforcing steel bar according to the hole depth, the length of the grooves and the width of the inter-panel joint and finishing forming of a horseshoe rib; after transplanting the horseshoe ribs into the stripe-type grooves and the vertical holes in the end parts, pouring epoxy resin embedded steel bar glue into the cleaned drilling holes; mixing concrete and broken stone concrete, pouring into the grooves to form an embedded steel bar protective layer; and sequentially spreading layers of protective covering surfaces on the upper layers of the two waste concrete panels from bottom to top. The method provided by the invention has the advantages that the relative vertical displacement at two sides of the old panel joint, the reflection cracks are prevented to generate and develop so as to reduce or stop reflection cracks generated during spreading of asphalt on an old concrete pavement.

An device and method for repairing the junction of a main pipe line and a lateral pipe. The device uses a series of independently controlled bladders to adjust the timing and pressure exerted by the bladders on the pipes. The device also uses a liner assembly of resin absorbent material is formed, with a tubular lateral liner connected to a concentric circular main liner. The liner also includes an opening to facilitate loading of the liner in the device. Upon loading the bladders and resin-embedded liner into a train, the device is positioned and the bladders independently inflated, either concurrently or in sequence, installing the liner assembly onto the pipe. Once the resin is cured, the bladder assembly and launcher are removed from the sewer pipe.

The invention belongs to the technical field of lithium ion batteries and in particular relates to a CNT (carbon nano tube)/polymer composite membrane as well as a preparing method and an application thereof. The composite membrane is prepared by taking an epoxy resin embedding solution, a flexibilizer and a CNT array as raw materials and then carrying out curing, compounding and slicing on the raw materials. CNTs in the composite membrane are distributed evenly, thus the upper and lower surfaces of the composite membrane have good electrical conductivity and also have good flexibility and strength; and the surfaces of the composite membrane are provided with a large number of opened tail ends of the CNTs, and the composite membrane can be applied to lithium ion batteries widely due to the highly oriented structures of the opened tail ends. The vertically-oriented CNT/polymer composite membrane is applied to buckled lithium ion batteries and polymer lithium ion batteries and also suitable for other types of lithium ion batteries.

A method for manufacturing a resin-embedded semiconductor light-emitting device that is capable of preventing a semiconductor film from being damaged when a growth substrate is delaminated using a laser lift-off method, and that is capable of preventing foreign matter from adhering to the semiconductor film when a resin material is applied. A laser exposure step to delaminate the growth substrate from the semiconductor film comprises a first laser exposure step for performing laser exposure at an energy density at which the resin is broken down but the semiconductor film is not broken down, in a range including a portion adjacent to at least one section of the semiconductor film divided by dividing grooves and at least one section of resin, and a second exposure step for performing laser exposure at an energy density at which the semiconductor film can be broken down in a range including at least one section.

The invention relates to polyurethane modified epoxy resin encapsulating material filled with promiscuous padding and the preparation method, in particular to epoxy resin encapsulating material prepared by adopting the promiscuous padding mixed by glass fiber power (MG) and SiO2 or AIN and the TDE-85 epoxy resin modified by polyurethane and the preparation method thereof. By adopting the polyurethane to toughen and modify the TDE-85 epoxy resin basal body, and adopting methyl tetrahydrophthalic anhydride methpa as the curing agent, 1,4-butylene-glycol as the chain extender, trimethylol propane as the crosslinking agent, 2,4,6-tris(dimethylamino methyl) phenol as the curing accelerator, and the mixture of the MG and the SiO2 or the AlN as the padding, the epoxy resin encapsulating material is made by evenly mixing the components according to the prescriptive mass ratio, which had good technical performance, in particular to the mechanical property. The experiment indicates that the promiscuous padding can effectively make up for the performance defects of the epoxy resin encapsulating material filled with single particle padding, and has good integrated performance.

The invention relates to a method for grinding and protecting cephalopod otolith. The method comprises the steps of extraction, soaking, placing, resin embedding, cutting, fixing on a glass slide, abrading, polishing, preservation and the like. The method can solve the problems that the cephalopod otolith is small and not easily ground, the otolith is easily broken in the grinding process and thetextures are easy to fade after polishing; and the otolith textures can be kept for long time.

A component-embedded printed wiring board (PWB) is disclosed. This PWB includes (a) a fluid-resin embedding section formed at place corresponding to electronic components such that the embedding section covers the electronic components, (b) a resin flow-speed accelerator placed in parallel with a top face of a circuit board and surrounding the embedding section, and (c) bonding resin placed at least between the accelerator and the circuit board. The fluid resin embedding section is filled up with the same resin as the bonding resin. This structure allows the accelerator to compress the resin with a pressure applied to the PWB, so that the resin tends to flow along the circuit board. As a result, the fluid-resin embedding section is thoroughly filled up with the resin without leaving any airs, and the reliable PWB is thus obtainable.

A device and method for repairing the junction of a main pipe line and a lateral pipe. The device uses a series of independently controlled bladders to adjust the timing and pressure exerted by the bladders on the pipes. The device also uses a liner assembly of resin absorbent material is formed, with a tubular lateral liner connected to a concentric circular main liner. The liner also includes an opening to facilitate loading of the liner in the device. Upon loading the bladders and resin-embedded liner into a train, the device is positioned and the bladders independently inflated, either concurrently or in sequence, installing the liner assembly onto the pipe. Once the resin is cured, the bladder assembly and launcher are removed from the sewer pipe.

The invention discloses a fast and intelligent 10KV pole-mounted breaker. The fast and intelligent 10KV pole-mounted breaker is composed of a breaker body and an intelligent control box which are connected through multicore shield cables, an epoxy resin embedded pole is adopted, and the fast and intelligent 10KV pole-mounted breaker is good in weather resistance and ageing resistant, prevents ultraviolet light, and is high in strength and good in electrical insulation performance. Small-scale integrated design is adopted, a current transformer and a voltage transformer are integrated in the pole, the structure is compact, and mounting and maintenance are easy. A high-speed algorithm is adopted, exit protecting signals can be provided in 10ms, the fast mechanical property of a permanent magnetic mechanism is combined, and a line fault is removed and isolated in 25ms. A single-phase earth fault (including low current earthing) detecting function is achieved. The technology of self-diagnosis of the running state and the mechanical property of the breaker is achieved, and maintenance efficiency is improved. A low-power design technology is adopted, solar energy and CT are utilized to supply power and are mutually supplemented, an external power source is not needed, and the power-driven operation can be achieved. The fast and intelligent 10KV pole-mounted breaker is provided with an Ethernet port, and an IEC61850 specification interface is provided.

A wafer has a plurality of projected dicing lines on a face side thereof, a plurality of devices formed in respective areas demarcated on the face side of the wafer by the projected dicing lines, a plurality of grooves defined in the projected dicing lines, and a molding resin laid on the devices and embedded in the grooves. An outer circumferential portion of the molding resin is removed, exposing the molding resin embedded in the grooves. The molding resin embedded in the grooves exposed on an outer circumferential portion of the wafer is detected, and a laser beam is focused at a transversely central point on the molding resin embedded in the grooves. The laser beam is applied to the molding resin along the grooves, thereby forming dividing grooves in the wafer to allow the wafer to be divided into individual devices.

The invention provides a method of identifying day age of cephalopods through beaks and includes a method of grinding a beak longitudinal section and counting growth striation. The method mainly includes the steps of: extraction, cleaning, soaking, cutting, arrangement, resin embedding, cutting, immobilization on a glass slide, grinding and polishing, picture forming, and growth striation counting. In the method, the beak longitudinal section is ground respectively from the left and right sides to a core surface towards a central line. A prepared section is photographed by CCD to ensure that the growth striation can be read at any time in future. The growth striation is counted from the rear end to the front end of the beak in a direction being vertical to the growth striation all the time, thereby ensuring counting accuracy. The method solves the problems that the beak is difficult to grind and is liable to break during grinding, and the growth striation is difficult to observe and count.

The invention belongs to the field of medical human parasitology and provides a method for making a large helminth specimen. The method comprises the following steps: specimen selection and collection; anesthetizing and precooling; freeze drying; epoxy resin embedding. The large helminth specimen made by using the method is capable of keeping the integrity of the appearance and shape of a helminth body for a long term, convenient to carry, diversified in appearance, free of preservative and pollutant volatilization, strong in transparency and easy to observe so as to meet the application requirement of parasitology in teaching and research processes and obtain better using effect and efficiency.

A glass fiber-reinforced polymer composite includes a polymer matrix, a plurality of glass fibers embedded within the polymer matrix, a first hollow glass fiber containing a resin embedded within the polymer matrix, a second hollow glass fiber containing a catalyst suitable for curing the resin embedded within the polymer matrix. When damage occurs to such a composite, the glass fibers containing the resin and the catalyst are ruptured, resulting in their mixing together so that the resin is cured for repairing the ruptured location.

The invention provides a flower ambroid accessory manufacturing method. The flower ambroid accessory manufacturing method comprises the following steps: picking flowers and placing the flowers in a freezer for storage; placing the flowers in a pretreatment fluid to soak the flowers; performing freeze-drying treatment of the pretreated flowers to obtain freeze-dried flowers; placing the freeze-dried flowers into an aftertreatment fluid to soak the freeze-dried flowers for aftertreatment, wherein the aftertreatment fluid comprises 5-10 percent of a film-forming material, 0.1-1% of an ultraviolet light absorber and the balance of an aftertreatment solvent, the film-forming material comprises at least one of paraffin, polyethylene wax, polyethyleneglycol or silicone oil, and the aftertreatment solvent is at least one of ethanol, methyl benzene, gasoline or ethyl acetate; and performing resin embedding of the freeze-dried flowers subjected to aftertreatment. By the adoption of the technical scheme, the freeze-dried flowers can still maintain the original colors and shapes, the resin-embedded flowers still keep the original colors and shapes, and during the use of an accessory manufactured by embedding, the flowers cannot discolor or fade along with light irradiation.

A mouthguard which has a unique shape and design which not only facilitates air passages so a player can breath while the mouthguard is in the player's mouth and protecting the player's teeth, but also has additionally has a flavoring embedded within the mouthguard, preferably on the base on which the player is placing his upper row of teeth so that in addition to protection, the mouthguard has an attractive flavor which can be tasted by the player as the player bites down on the mouthguard.