23 results about "Internal bonding" patented technology

The utility model discloses slab processing equipment. The slab processing equipment comprises a preheating device and a compression roller device, the preheating device is configured to perform heat treatment on the plate blank; and the compression roller device is arranged at an outlet of the preheating device and is configured to compress the plate blank output from the preheating device. By additionally arranging the compression roller device at the rear end of the preheating device, the compression roller device can compress the heated plate blank, so that the thickness of the plate blank is reduced, the density of the plate blank is improved, the internal bonding strength of the plate blank is improved, meanwhile, the internal quality of the plate blank is improved, and therefore sufficient technological conditions are created for the subsequent technological processes such as high-speed hot pressing of the plate blank.

The invention belongs to the technical field of artificial boards, and relates to a manufacturing process of a fiberboard for a running board of a treadmill, which comprises a complete process from raw wood feeding to packaging and warehousing, and is characterized in that mountain miscellaneous wood stacked for not more than one month is selected as a raw material, and water-resistant high-strength melamine modified urea resin and a latent composite curing agent are applied; and drying, paving and hot pressing parameters are optimized. The water-resistant high-strength melamine modified urea-formaldehyde resin is synthesized by adopting an alkali-acid-acid-alkali process, and has the advantages of fast curing, strong bonding and good water resistance; the composite curing agent can avoid pre-curing and promote curing of the core layer; and hot pressing adopts a five-section warm-pressing zoning design. The surface layer density of the product is high, the static bending intensity reaches 49-55 MPa, the internal bonding strength, the water resistance and the environmental protection property are excellent, and the use requirements of the running board of the running machine are completely met.

The invention discloses a preparation method and application of a non-grain bio-based formaldehyde-free shaving board adhesive. According to the preparation method of the non-grain bio-based formaldehyde-free shaving board adhesive, palm oil refining waste serves as a raw material, all the raw materials used in the preparation process are non-aldehyde compounds, the raw materials are chemically modified through transesterification, and the non-grain bio-based formaldehyde-free shaving board adhesive is prepared by increasing the crosslinking density and adjusting the interface bonding capacity. The mechanical property and the water resistance of the adhesive are enhanced. The prepared adhesive can be used for preparing shaving boards, and has the advantages of no formaldehyde release, environmental friendliness and the like. A new thought is provided for functional utilization of non-grain vegetable oil refining waste, the use requirements for production of the prepared adhesive composite artificial board are met, and the internal bonding strength, the static bending intensity, the water absorption expansion rate and the like of the shaving board can meet the existing national standard specification requirements.

This invention discloses a method for analyzing the internal bonding strength of chemimechanical pulp fibers based on two-dimensional correlation near-infrared spectroscopy. The method includes the following steps: preparing chemimechanical pulp fiber samples with different internal bonding strengths and manipulating them into hand-made sheets; equilibrating the moisture content of the hand-made sheets under different relative humidity conditions; acquiring the near-infrared dynamic spectrum of the hand-made sheets in order of increasing relative humidity; performing two-dimensional correlation analysis on the dynamic spectrum to obtain the autocorrelation spectrum; and calculating the ratio of the signal intensity at wavelengths of 1394 nm and 1465 nm as the relative intensity I. 1394 / 1465 Test the bonding strength within the handwritten sheet according to standard methods, and calculate the test value and I. 1394 / 1465 The relationship curve of values; obtain I for the sample to be tested according to the above steps. 1393 / 1465 After obtaining the value, the fiber bond strength can be calculated by substituting it into the relationship curve. This invention enables efficient and non-destructive analysis of the strength performance indicators of pulp samples.

The method for bonding metal base and rubber part of the present application comprises: preparing an adhesive, which comprises propyl methacrylate, propyl acrylate and a cross-linking agent; coating the adhesive on the surface of the metal base to form an adhesive film; performing vacuum treatment on the adhesive film to remove bubbles; placing a rubber part on the adhesive film and applying pressure to the rubber part for a predetermined time; and performing heat treatment on the rubber part together with the metal base. The bonding method is simple and easy to operate, has high internal bonding strength and is less likely to separate, can effectively protect the performance of the product and prolong the service life, and is environment-friendly, thus being suitable for popularization and application.

The invention relates to a novel process of a novel composite isolation glue solution for electronic carrier tape paper, in particular to a method for enhancing the mechanical property, air permeability and antistatic property of the electronic carrier tape paper by adopting the novel composite isolation glue solution. Specifically, the mechanical property and the air permeability of the carrier tape paper are improved through the permeation effect of a novel composite isolation glue solution and the technology of constructing stable-form surface micropores by a pore-foaming agent, and the surface conductivity of the carrier tape paper is enhanced by adding polypyrrole, so that electrostatic accumulation is reduced, and the antistatic property is improved. And particularly, the stiffness and the internal bonding strength are improved, so that the requirement of high-speed automatic mounting is met.

The present application relates to the technical field of metal surface treatment, in particular to a kind of furnace roller self-abrasion coating for horizontal continuous annealing furnace and preparation method thereof, high-temperature alloy MCrAlY is used to bottom+ceramic coating (three kinds of ceramic mixed powder) working layer mode to carry out surface strengthening to the surface of horizontal continuous annealing furnace furnace roller, high-temperature alloy plays the transition effect of matrix and ceramic coating, improves coating bonding performance, the coating of working layer is mainly the oxide ceramic of ZrO2-Y2O3+BN+SiO2.ZrO2-Y2O3 plays the role of skeleton support;BN plays the role of lubrication and anti-adhesion;And the main role of SiO2 is to reduce the internal bonding strength of coating, so that the coating can timely peel off when small block neoplasm appears on the surface of roller piece to prevent neoplasm from continuing to adhere and grow.

The present application relates to hot pressing control technical field, disclose a kind of fine woodworking board hot pressing carbonization linkage control method and system, the method includes: obtaining the rebound of plate blank to be pressed, and obtain the state parameter of plate blank to be pressed.According to rebound and state parameter, determine whether plate blank to be pressed is in rebound stagnation risk state.When in, determine the dominant risk state.When in rebound dominant risk state, carry out slow pressure rise and shape stability, according to the thickness change of plate blank compression Limit speed temperature rise and decompression steam of edge portion, after steam end, carry out final pressure curing under the condition of limiting edge portion temperature rise upper limit.When determining in stagnation dominant risk state, carry out edge portion limited speed temperature rise, according to the surface temperature difference of edge portion and center and the thickness change of plate blank compression Decompression steam is carried out, after steam end, final pressure curing is carried out.When not in, carry out reference hot pressing control.The present application inhibits edge portion carbonization, improves internal bonding quality, improves product qualification rate.

The invention relates to the field of redispersible latex powder, and in particular to a waterproof redispersible latex powder based on modified versatate carbonic acid emulsion and a preparation method thereof, and is used to solve the problem of poor waterproof performance of existing redispersible latex powders. The waterproof redispersible latex powder uses modified versatate carbonic acid emulsion as a main raw material, and is endowed with good waterproof performance. When added to building materials, the waterproof redispersible latex powder can significantly improve the impermeability and water resistance of the building materials, effectively preventing moisture penetration. The redispersible latex powder has good adhesion and flexibility, and can improve the internal bonding strength of the building materials. At the same time, it endows the building materials with a certain impact resistance, and can improve the mechanical properties of the building materials, thereby significantly improving the comprehensive performance and service life of the building materials, and meeting the demand of modern buildings for high-performance waterproof materials.

The invention relates to a forming method of a composite material foam sandwich structural member and a sandwich member foaming mold, and belongs to the field of composite material manufacturing. A forming method of a composite material foam sandwich structural member comprises the following steps: (1) customizing a composite material foam sandwich member pressure equalizing plate forming die and a sandwich member foaming die; (2) manufacturing a semi-rigid rubber pressure equalizing plate by using a pressure equalizing plate forming mold; (3) the foaming powder and the metal piece are glued into a foaming core in a drying oven through a sandwich piece foaming mold; (4) paving an adhesive film, a glass fiber prepreg and a carbon fiber fabric prepreg on a foaming core formed by the metal piece and the foaming powder to prepare a part preform; and (5) carrying out vacuum bag assembling and packaging on the pressure equalizing plate and the part prefabricated body, and then integrally transferring the pressure equalizing plate and the part prefabricated body to an autoclave for curing and forming. The invention has the following advantages: the manufacturing cost is reduced; the overall manufacturing efficiency of parts is improved; the foaming quality of the foaming powder is improved; and the internal bonding quality of the part is ensured.

To provide a release liner capable of reducing or suppressing the generation of paper dust and the like when cutting the release liner.SOLUTION: The release liner includes, in order, a release layer, a first resin layer, a paper base material, and a second resin layer. The paper base material contains recycled pulp, and the release liner has an internal bond strength of approximately 45.0 N / m or more.SELECTED DRAWING: Figure 1

The invention provides a preparation process of a fiber multi-layer shaving board, and relates to the technical field of shaving board preparation, the preparation process comprises the following steps: S1, preparing materials; s2, preparing fibers; s3, drying and sorting; s4, mixing and applying glue; s5, paving and forming; s6, compression molding; s7, carrying out post-treatment; and S8, performing automatic storage. One-time paving and hot-press forming are adopted to replace a traditional secondary fiberboard pressing and pasting technology, the secondary processing link is avoided, the production efficiency is improved, secondary uneven distribution of glue and thermal degradation are avoided, the problems of degumming, deformation and cracking are fundamentally eliminated, the service life of the product is prolonged, the supporting force is guaranteed through the multi-layer symmetrical structure and the core layer coarse wood shavings, and the service life of the product is prolonged. The secondary surface layer and the fine surface layer are transited, the fiber surface layer is enhanced and combined, and precise sizing is matched, so that the static bending strength and the internal bonding strength of the product exceed the standard of a traditional shaving board.

The invention belongs to a non-adhesive cork board and a preparation method thereof, and the method comprises the following steps: pretreating cork particles through a metal salt solution and carrying out hot press molding to realize non-adhesive bonding. The method comprises the specific steps that cork particles with the particle size being 2-6 mm are soaked in a metal salt solution with the concentration being 0.5 g / L-20.0 g / L for 10-30 min, and the mass ratio of metal salt to the cork particles is 1: 10-1: 100; taking out and drying until the water content is 8-12%; and carrying out hot pressing for 30-60 minutes at the temperature of 80-130 DEG C and the pressure of 4-8 MPa to obtain the glue-free cork board. According to the invention, the coordination crosslinking effect of metal ions and cork polyphenol is utilized, a synthetic resin adhesive is not needed, the product has no formaldehyde release, the process is simple, the cost is low, the internal bonding strength of the obtained cork board reaches 0.7-1.5 MPa, the tensile strength is 1.5-4.5 MPa, and the cork board is suitable for the field of environment-friendly building materials.

The invention relates to the technical field of building material manufacturing, in particular to a stone composite wallboard and a preparation method thereof. The stone composite wallboard sequentially comprises a stone decoration layer, an external bonding layer, an elastic buffer layer, an internal bonding layer and a supporting base layer from outside to inside. The stone decoration layer adopts a natural stone sheet; the elastic buffer layer is made of closed-cell foaming high polymer materials, external point impact is converted into dispersed surface loads by means of the elastic deformation capacity of the elastic buffer layer, and the situation that the stone decoration layer is damaged due to local stress concentration is fundamentally avoided. The supporting base layer provides stable support and good flatness for the whole structure. The external bonding layer and the internal bonding layer are selected in a differentiated mode, tight bonding and function cooperation of corresponding layers are achieved through the epoxy resin adhesive and the polyurethane structural adhesive, uniform transfer of loads between layers is guaranteed through a full-plane bonding mode, the overall structural stability is enhanced, and the stone composite wallboard finished product has the excellent decoration performance and impact resistance.

A release liner capable of reducing or suppressing the generation of paper dust and the like when cutting the release liner. The release liner includes, in order, a release layer, a first resin layer, a paper base material, and a second resin layer. The paper base material contains recycled pulp, and the release liner has an internal bond strength of approximately 45.0 N / m or greater.

The invention discloses a two-component adhesive for shaving boards / fiberboards and a preparation method of the two-component adhesive, and relates to the technical field of adhesive preparation. The adhesive disclosed by the invention is prepared by introducing an acrylic acid hydroxyl ester monomer in a VAE copolymerization stage for hydroxylation modification, then mixing with polyether polyol prepolymerization modified pMDI, and matching with nano cellulose and a lignosulfonate reinforced phase, so that the technical problems of low reaction efficiency, short pot life and high cost of an existing VAE / pMDI system are solved. The working life of the prepared adhesive is gt; the wet strength of the shaving board prepared from the adhesive is larger than or equal to 1.1 MPa, the internal bonding strength is larger than or equal to 1.0 MPa, the comprehensive cost is reduced by 30% or above compared with that of a pure pMDI system, and the adhesive is suitable for efficient production of formaldehyde-free artificial boards.

The treatment method of the rubber part comprises the following steps: preparing a conductive adhesive, wherein the conductive adhesive comprises polyurethane acrylate, a thermal initiator, a diluent, a stabilizer and conductive powder; providing a copper wire, a first rubber body and a second rubber body; respectively coating the conductive adhesive on each bonding surface of the first rubber body and the second rubber body; and pressing the copper wire between the first rubber body and the second rubber body, electrifying the two ends of the copper wire, heating and pressurizing to cure the conductive adhesive, and forming the rubber part. According to the rubber part, the copper wire is bonded in the rubber part through the specific conductive adhesive, so that the problem of electrostatic discharge is solved, the internal bonding strength of the rubber part is high, metal separation is not prone to occurring, and the service life can be prolonged.

The invention relates to the technical field of infrared detector production, in particular to a liquid bead positioning self-assembly structure, self-assembly method and system in a Dewar flask, and the structure comprises a substrate, the lower surface of which is provided with at least two substrate self-assembly areas; the substrate self-assembly area comprises an arc-shaped block-shaped area; a circular positioning area; the crescent area is arranged along the arc direction of the arc block area, and the first end points to the circular positioning area; the surface wettability of the second end towards the first end is gradually enhanced, so that the liquid drops are guided to generate interface repulsive force pointing to the circular positioning area. In order to solve the problem that the position of a substrate needs to be calibrated in a Dewar internal bonding method in the prior art, the surface of a self-assembly area of the substrate is processed to form a surface infiltrated in a specific direction, so that the substrate moves in the specific direction of the surface after falling on a liquid bead, self-alignment of the substrate is realized, and the alignment precision of the substrate is improved. And the problem that the bonding strength is influenced by a repeated calibration process is avoided.

The invention provides a device and a method for internal deep cavity bonding of an accelerometer. The device comprises semi-automatic bonding equipment (1), a bonding workbench (2), a bonding working angle dynamic adjusting device (3), a bonding heating device (4) and a detachable anti-static ignition rod device (5), the detachable anti-static ignition rod device (5) comprises an ignition rod (51) and a detachable anti-static head (52); the ignition rod (51) is used for instantaneously discharging in the transduction process of the bonding equipment to react with the bonding pure gold material so as to form a bondable gold ball; when the bonding part of the PCB is bonded, the detachable anti-static head (52) is connected to the head of the ignition rod (51) and is connected with a ground wire. When deep-cavity bonding is carried out on the internal bonding part of the movement, the detachable anti-static head (52) is detached from the head of the ignition rod (51), and the ignition rod (51) extends into the movement of the accelerometer.

The present application belongs to the technical field of repair agent, and particularly relates to a repair agent, a preparation method and application thereof. The repair agent comprises component A and component B. The component A comprises 100-150 parts by weight of aliphatic epoxy resin, 100-150 parts by weight of metal ceramic powder, 50-100 parts by weight of anti-sulfur toughening alloy powder and 30-80 parts by weight of low-friction self-lubricating powder. The component B comprises 40-60 parts by weight of curing agent. The repair agent has good flexibility, self-lubricating property, processability, good anti-sulfur corrosion capacity, strong bonding strength and internal bonding strength. After curing, the repair agent has very stable bonding strength in slurry containing sulfur corrosion and chlorine ion corrosion, and the cured structure still maintains high strength even in a slurry environment at 70 DEG C.

The invention discloses a paper reinforcing agent and application thereof, and belongs to the technical field of papermaking. The paper reinforcing agent is prepared by mixing raw starch, cationic polyacrylamide and water. The paper reinforcing agent is directly used for forming a wet paper sheet in a dry part adding mode, so that the performance of a paper base material is remarkably improved, and the internal bonding strength, the ring crush compression resistance index and the bursting strength of the paper base material are remarkably superior to those of the paper base material which is only added with GPAM at a wet part or only sprayed with starch emulsion at a dry part; the paper base material is even superior to a paper base material prepared by a preparation method of adding GPAM at a wet part and spraying starch emulsion at a dry part.

The invention provides a small integrated sensor packaging method, and relates to the technical field of sensor packaging. The surface of the small-sized integrated sensor chip is activated by adopting a plasma cleaning technology, and chemical cleaning and ultrasonic physical cleaning in a specific ratio are combined, so that impurities and pollutants on the surface of the small-sized integrated sensor chip can be effectively removed, and meanwhile, the surface activity of the small-sized integrated sensor chip is enhanced; the bonding strength of the small-sized integrated sensor chip and the packaging material is improved, and the stability and reliability of the performance of the small-sized integrated sensor are guaranteed; according to the invention, the epoxy resin-based composite material filled with alumina ceramic particles is used as a packaging material, the coupling agent is added to enhance the internal binding force of the material, and various parameters in the vacuum injection molding process are accurately controlled, so that the packaging material tightly and uniformly wraps the small integrated sensor chip, and internal bubbles and stress are reduced; the mechanical strength, thermal stability and insulating property of the sensor are improved, and the service life of the small integrated sensor is prolonged.

The invention provides a B1-grade fireproof light-weight high-strength particle board and a preparation method thereof. According to the preparation method, the particle board is prepared by adopting a synergistic process of a high-glue-consumption flame-retardant system and specific high-temperature post-treatment carbonization modification. Through a high sizing and high-temperature carbonization process, a plate made of the cheap E3-grade urea-formaldehyde glue reaches the environmental protection grade (ENF grade) of a formaldehyde-free plate, and the cost is greatly reduced. The negative influence of the flame retardant on the bonding strength is compensated by the high sizing amount, and the deep curing of the adhesive is promoted by high-temperature carbonization, so that formaldehyde is greatly decomposed while the board reaches the B1-level fire prevention, and the mechanical strength far exceeds the national standard. By means of the unique technology, the board obtains extremely high internal bonding strength, static bending strength and unprecedented low water absorption expansion rate under the low density, and the environment-friendly particle board product which is light, high in strength and super-stable is obtained.