10 results about "Internal bonding" patented technology

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.

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 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 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.

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 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.