11results about How to "Enhance binding strength" patented technology

The invention discloses a low-cost Ir-Sn oxide electro-catalytic anode, which is prepared by the following steps: pretreating a titanium substrate to form a rough structure with uniform overall distribution on the surface of the titanium substrate, then coating a mixed metal salt solution of titanium and tantalum on the surface of the titanium substrate, and preparing an intermediate layer with a compact structure by using a thermal decomposition method, thereby obtaining the low-cost Ir-Sn oxide electro-catalytic anode. And finally, circularly coating the surface of the intermediate layer with a noble metal salt solution, and performing high-temperature sintering to form a noble metal oxide catalyst layer. In the precious metal salt solution used by the electrocatalytic anode, the use amount of precious metal with high cost is relatively low, and the production cost can be greatly reduced on the premise of ensuring the electrocatalytic performance and the service life.

The invention provides a preparation method of a wear-resistant and corrosion-resistant titanium alloy material, the titanium alloy material comprises a titanium alloy base material and a functional coating, the functional coating is prepared from titanium alloy powder, ceramic particles and silicon powder, and the preparation method comprises the following steps: S10, weighing and ball-milling the titanium alloy powder, the ceramic particles and the silicon powder in sequence, preparing to obtain functional powder; s20, the functional powder is stacked on the surface of the titanium alloy base material in a laser melting deposition mode, and a titanium alloy complex is obtained; and S30, the titanium alloy complex is subjected to heat treatment for 4 h to 24 h under the condition that the temperature ranges from 450 DEG C to 650 DEG C, and the titanium alloy material is obtained. Wherein the ceramic particles comprise Al2O3; and the functional coating comprises an AlSi phase and a TiSi phase. According to the titanium alloy material prepared through the method, it is guaranteed that the titanium alloy material has good abrasion resistance and corrosion resistance in the severe environment, meanwhile, the functional coating is prevented from being peeled off, and the service life of the titanium alloy material is prolonged.

The invention discloses a high-strength corrosion-resistant CPVC pipe formula and a preparation method thereof. The high-strength corrosion-resistant CPVC pipe formula comprises CPVC resin, a stabilizer, a plasticizer, a lubricant, an impact modifier, a filler, color master batch and nano silicon dioxide. The method comprises the following steps: 1, preparing raw materials; step 2, premixing treatment; step 3, plasticizing extrusion; step 4, cooling and shaping; step 5, cutting detection; step 6, carrying out surface pretreatment; step 7, primer coating; step 8, coating a finishing coat; according to the invention, the nano silicon dioxide is added into a traditional CPVC pipe formula, and after blending, the nano silicon dioxide is well combined with a matrix, so that the strength of the pipe is enhanced; oil stains and impurities left on the surface are removed through surface pretreatment, and the production qualification rate of the pipe is guaranteed; and during surface treatment, epoxy primer and fluorocarbon finish paint are sequentially coated to provide an additional protection layer for the pipe, so that the aging speed is slowed down, the corrosion resistance is improved, and the service life of the pipe is prolonged.

The invention provides a design method of a special fixture for energy storage spot welding positioning based on a guide vane assembly, which comprises the following steps of: determining an energy storage spot welding process route, firstly spot-welding a partition plate I and a partition plate II, secondly spot-welding a honeycomb, and then spot-welding and combining with a main body part. Determining a part positioning reference, and selecting the excircle of the part as a positioning reference surface; a point electrode holder material is selected, and brass or red copper is selected as the point electrode holder material. A detachable point electrode base is designed, the first partition plate and the second partition plate are preferentially assembled in the spot welding process, the partition plate assembly is formed, welding points are increased, the welding strength is improved, and the honeycomb assembly is formed. The method has the advantages that the stability and inclusiveness are considered while the dimensional precision of the part is guaranteed, and the spot welding efficiency is improved. Through the adaptive radian, the integrating degree between the honeycomb and the partition plate is improved, the stress strength of parts during energy storage spot welding is improved, the bonding strength between the parts is enhanced, deformation of the partition plate and the honeycomb is reduced, and the vacuum brazing quality of the parts is improved.

The application discloses a silicate cement admixture and a preparation method thereof, and belongs to the technical field of recycled concrete. The silicate cement admixture is prepared by using self-synthesized modified coal gangue nanosheets, copper-calcium nanoneedle composite modified scales and a modified binder as part of fillers. The modified binder can significantly increase the interfacial bonding force of the silicate cement admixture, the cement matrix and the recycled aggregate. The modified coal gangue nanosheets and the copper-calcium nanoneedle composite modified scales, which are both reinforcing phases, can give the silicate cement admixture sufficient mechanical strength. The two kinds of materials are both in a sheet structure, and the stress can be dispersed by mutual sliding of the two kinds of materials, so that stress concentration points are avoided at the interface. The copper-calcium nanoneedle composite modified scales can increase the contact area with other materials through a mechanical interlocking effect, and the existence of the nanoneedle structure allows a gap between the copper-calcium nanoneedle composite modified scales and other materials, so that the porosity and the water permeability are increased.

The invention relates to the field of adhesive tapes, in particular to a PE adhesive tape glue and a preparation method thereof. The adhesive tape glue is formed on a PE film surface by ultraviolet curing; a terminal hydroxyl polybutadiene liquid rubber is further modified by chlorinated organosilicon-modified eugenol to obtain organosilicon-modified polybutadiene liquid rubber containing a plurality of photosensitive groups; wherein the chlorinated organosilicon-modified eugenol is prepared by using green bio-based raw material eugenol as a raw material and replacing it with methyl (7-octenyl) dichlorosilane; a nano silicon dioxide coating layer is first formed on the surface of nano zinc oxide by using sodium silicate, and mercaptopropyl trimethoxysilane is used to mercaptolate the nano zinc oxide, and then the chlorinated organosilicon-modified eugenol is grafted on the surface of the nano zinc oxide by mercapto-ene photo-click reaction, and then further quaternized by using N,N-dimethyldodecylamine to obtain modified nano zinc oxide, and the modified nano zinc oxide is introduced into the glue to greatly improve the antibacterial property, UV resistance and water resistance of the nano zinc oxide.

The present invention discloses a lead mesh for lead-acid batteries and a preparation method thereof, comprising an upper frame rib, a lower frame rib and a rib mesh woven therebetween, wherein a plurality of pole ears are arranged at intervals on the upper frame rib, and the rib mesh comprises a plurality of mesh ribs, wherein the mesh ribs are spiral reciprocating rotating bending structures, and are interlaced and woven in pairs to form the rib mesh. In the manufacturing process, the present invention has substantially no redundant waste to be removed, reduces the generation of process waste that must exist in conventional processes for forming lead meshes, and reduces the loss of raw material alloy or pure lead, energy and labor waste in the secondary repeated lead melting process.

The present disclosure provides a hanging device, comprising a connecting body, a hanging reinforcing mechanism and a hanging piece. The connecting body comprises a joint part for vertical insertion of a building body, and is detachably arranged on the building body. The hanging reinforcing mechanism comprises at least one pair of clamping pieces, which are oppositely arranged on the connecting body in a transverse direction and are slidably arranged. The hanging piece is connected with the at least one pair of clamping pieces through a transmission mechanism and is vertically movably arranged. Wherein, the hanging piece is driven by the transmission mechanism to form a driving component force of the at least one pair of clamping pieces in the transverse direction to approach or deviate from each other, so that the at least one pair of clamping pieces are tightly arranged on the building body. The transmission mechanism drives the at least one pair of clamping pieces to clamp the building body in the horizontal direction by the gravity acting on the hanging piece, so as to improve the combination degree between the hanging device and the building body, avoid the situation that the gravity acting on the hanging piece only causes the hanging device to separate from the building body, and further improve the safety factor of the hanging device.

The utility model relates to a kind of grounding structure and electric connector.The grounding structure includes ground sheet, with first side and second side, first hole is provided on the ground sheet, the first hole is through the second side of the ground sheet;And conductive column, its first end is connected in first hole, second end is used to be connected with ground object.The electric connector includes first lead frame, with first side and second side;First terminal assembly, with signal terminal and ground terminal, the signal terminal and ground terminal are all set in the second side of the first lead frame;And first grounding structure, the first grounding structure is located in the first side of the first lead frame;The first lead frame is provided with the second hole opposite with the first hole of the first grounding structure, the second hole is communicated with the ground terminal;The conductive column is connected in the first hole and second hole, the conductive column is connected with the ground terminal as ground object.

The invention belongs to the technical field of textile, and particularly relates to a spun silk loose fiber preparation method and yarn, fabric and garment.The preparation method comprises the steps that spun silk loose fibers are subjected to pretreatment such as cleaning and impurity removal; carrying out dip dyeing on the pretreated loose fibers by adopting a high-color-fastness plant dye; after dip dyeing is completed, complexing and reinforcing with a mordant; performing hot water washing and normal-temperature water washing, and drying to obtain loose fibers dyed by the high-color-fastness vegetable dye; compared with the prior art, the method has the advantages that the advantage of high color fastness of the natural plant dye is utilized, the spun silk loose fibers are dyed, the environment-friendly and skin-friendly concept is embodied, meanwhile, the loose fibers, follow-up fabrics, clothes, bedding articles and the like are endowed with excellent color fastness, and the increasing requirements of consumers for high-quality life and consumption can be met.

The present invention relates to a slippery water system based on an amphiphilic polymer, comprising the following raw materials prepared by weight: 0.05-0.5wt% of a suspended drag reducer, 0.1-1.0wt% of a clay stabilizer, 0.3-1.5wt% of a drainage aid, and the balance being water; the suspended drag reducer is prepared by weight: 40% of an amphiphilic polymer, 3% of an organic montmorillonite, and the balance being white oil; the amphiphilic polymer is prepared by acrylamide, acrylonitrile, a cationic hydrophobic monomer, and an aggregate; the aggregate is a mesoporous carbon nanosphere loaded with 2-acrylamide-2-methylpropanesulfonic acid. A preparation method for a slippery water system based on an amphiphilic polymer is also disclosed. The present invention achieves the following beneficial effects: hydrophobic association makes the drag reducer in this article lower in dosage than a traditional suspended drag reducer, and the addition of aggregate makes the network structure formed by the amphiphilic polymer in the aqueous solution more stable, thereby having better anti-eddy current drag reduction capability, and the cationic amphiphilic polymer also makes the prepared slippery water have high salt resistance.