151results about How to "Play a role in bonding" patented technology

The invention relates to a material for a multifunctional shoe pad, which contains three layers of materials, wherein common fabrics are arranged on the bottom layer; antibiosis non-woven fabrics are arranged on the upper layer; and the middle layer contains high water-absorption resin particles covered by the inorganic nanometer silver antibacterial agent on the surface and hard micro beads covered by the hot melt adhesive on the surface. A preparation method comprises the following steps: (1) coating materials: on a support plate, covering the antibiosis non-woven fabrics, spreading the hard micro beads and high water-absorption resin particles, and covering the common fabrics; (2) heating: heating the compound three-layered materials; (3) hot-pressing: hotly pressing the heated compound three-layered materials so as to form the material for multifunctional shoe; and (4) collecting the finished products. Before the step (1) is performed, the steps of covering the surface of the hard micro bead with hot melt adhesive and covering the surface of the high water-absorption resin with the antibacterial agent are performed. The material for multifunctional shoe has the advantages that the prepared materials have high moisture-absorption property and functions of antibiosis, deodorization and massaging sole of the foot, the functions are lasting, the effects of antibiosis and deodorization are obvious, and the materials are easily produced and have bright application prospect.

The invention discloses a formaldehyde-free bamboo recombined, plasticized and polymerized building structure material and a production technique. The formaldehyde-free bamboo recombined, plasticized and polymerized building structure material is structurally characterized in that at least two separate expanded bamboo recombined, plasticized and polymerized veneer layers are overlaid, and fiber lignin in bamboo is grafted with polymer resin compounds, and the polymer resin compounds are plasticized and polymerized with the bamboo under the hot-melt state to form an integer; when the separate expanded bamboo recombined, plasticized and polymerized veneer layers are overlapped, tabasheer layers are opposite, and bamboo green layers are opposite. Using ratio of bamboo is increased; working efficiency is improved, and cost of unit products is lowered; mechanical property of bamboo is maintained fully; the recombined plasticized and polymerized bamboo is filled with the polymer resin to modify the bamboo, and the material becomes an environment-friendly material suitable for building structures.

The invention discloses a scrap rubber powder/vegetable fiber composite foaming material and a preparation process thereof. The scrap rubber powder/vegetable fiber composite foaming material is prepared from the following components in part by weight: 80 to 120 parts of scrap rubber powder, 80 to 120 parts of vegetable fibers, 20 to 50 parts of high density polyethylene, 2 to 3 parts of benzoyl peroxide, 5 to 20 parts of maleic anhydride grafted polyethylene, 5 to 15 parts of azodicarbonamide, 10 to 30 parts of lubricating agent and 1 to 5 parts of heat stabilizer. The product can be granulated by dynamic extrusion and foamed by die pressing and has a simple preparation process, high cost performance and low cost. The scrap rubber powder/vegetable fiber composite foaming material can be used for manufacturing mute floors, floor tiles, buffer shockproof packaging materials such as inside linear, and the like.

The invention discloses a SMT dispensing process of a BGA chip, comprising the following steps: S1, mounting a BGA chip on the SMT board surface of a board card; S2, a hot melt adhesive block is arranged at a preset position of the BGA chip; S3: the board provided with the hot melt adhesive block is reflow heated through a reflow soldering furnace, the hot melt adhesive block is heated to melt tobond the BGA chip and the PCB board, and the board is returned to a solid state after the board is out of the furnace. The SMT dispensing process of the BGA chip provided by the invention can completedispensing and curing operations in the SMT wire body, does not need to install a dispensing machine and a reflow soldering furnace outside the wire body, and reduces the equipment cost. Moreover, the off-line operation flow is not needed, the production circulation flow of the product is reduced, and the production efficiency is improved. The cost of manual operation is reduced, and the operation risk of the product is further reduced.

The invention provides a preparation method of a graphene-polyurethane composite fiber. Low-viscosity liquid dihydric alcohol and liquid diisocyanate are taken as raw materials to prepare a polyurethane prepolymer, and then photosensitive groups are introduced on molecular chains of the polyurethane prepolymer to obtain the modified low-viscosity polyurethane prepolymer; the obtained modified polyurethane prepolymer is mixed with graphene and photoinitiator to be dispersed and stirred so that the graphene is fully impregnated and compounded, then spinning is performed on the impregnated and mixed material, then UV irradiation is utilized, so that the photocurable polyurethane prepolymer on the surface of the fiber reacts and is solidified to obtain the graphene/polyurethane composite fiber. The preparation method of the graphene-polyurethane composite fiber has the advantages that the defect of lower uniformity when the composite fiber is prepared by spinning the graphene and polyurethane is overcome, the bonding strength between the polyurethane and the graphene is improved by photocuring of the polyurethane, the process is continuous and rapid, and the uniformity of the preparedcomposite fiber is high.

The invention discloses extruded composite smooth aluminum sleeve cable production equipment and a production method. The production equipment comprises an extruded aluminum sleeve device, a wheel type reducing device, a preheating device, a multi-layer co-extrusion device and a cooling water tank, and the extruded aluminum sleeve device continuously extrudes an aluminum sleeve; the cable coated with the aluminum sleeve passes through a shaft hole, and the aluminum sleeve is tightened to the outer diameter designed by the process by the wheel type reducing device, so that the whole aluminum sleeve is coated on the surface of the cable core; the preheating device is used for heating the aluminum sleeve; the multi-layer co-extrusion device is used for compounding the aluminum sleeve with thehot melt adhesive, a PE sheath, a PVC sheath and a conductive layer together and carrying out cooling molding through the cooling water tank. According to the hot melt adhesive extrusion technology designed by the invention, the hot melt adhesive not only achieves an anti-corrosion effect, but also achieves a bonding effect, so that the PE sheath, the PVC sheath, the conductive layer and the smooth aluminum sheath of the cable are firmly bonded together, and the phenomena of arching or wrinkling cannot be generated during bending, take-up and construction of the cable.

The invention discloses black garlic capsules and a preparation method thereof. The black garlic capsules are prepared from the following raw materials in percentage by weight: 5-10g of black garlic, 2-4g of citric acid, 3-6g of sodium citrate, 0.1-0.2g of sodium malate, 3-5g of calcium carboxymethylcellulose and 81.9-86.9g of starch octenyl succinate anhydride. The product disclosed by the invention is prepared by the following steps: adding water to black garlic to grind to slurry by a colloid mill; then, mixing with liquor prepared by from other auxiliary materials; stirring for 80-120 minutes at a rotate speed of 180-220r/m; then, spraying, drying, pelletizing, leveling and uniformly packaging to prepare the black garlic capsule products. With the adoption of the preparation process, the raw materials of the product are small in grain size and smoothfine, and are beneficially distributed and dissolved-out in vivo, so that the absorption and utilization effect of the product is facilitated. The product disclosed by the invention is convenient to carry and take, low in preparation cost and good in market prospect.

A nano-class plastic-alloy part for hydraulic machine is prepared through proportionally mixing short aramid fibers, nanoparticles, nylon powder and PTFE powder to obtain powder mixture, proportionally mixing epoxy resin, solidifying agent and diluent to obtain slurry, mixing them together, pouring into mould containing carbon steel skeleton and aramid fiber fabric and pressure solidifying. Its advantages are high resistance to abrasion and cavitation, and low cost.

The invention discloses ramsbottom carbon powder molding adhesive. The ramsbottom carbon powder molding adhesive is prepared by mixing 20 to 30 percent of caustic soda sodium hydroxide solution, 20 to 30 percent of urea solution and 40 to 60 percent of corn starch and adding hot water at the temperature of between 60 and 80 DEG C into the mixture with mixing, wherein the concentration of the sodium hydroxide solution is 0.1 to 5 percent and the concentration of the urea solution is 0.1 to 5 percent. The formula is simple and practical; the materials are easy to obtain; and after the adhesive is used, the ramsbottom carbon powder has good molding, low ash content, good adhesive performance and good chemical activity, has consistent using effect of ramsbottom carbon, reduces the energy waste, avoids environment pollution and provides a guarantee for reducing production cost and promoting benefit.

The invention provides a preparation method of a heteromorphic microporous ceramic capillary. The preparation method comprises the steps of designing a special heteromorphic microporous ceramic capillary forming die, preparing special zirconia ceramic particles, matching a unique sintering forming technology to achieve primary sintering forming of a heteromorphic inner hole of the ceramic capillary without secondary processing, and designing a thimble positioning hole during forming green body preparation according to a product property of the heteromorphic microporous ceramic capillary to allow that an outside diameter grinding technology of the ceramic capillary is greatly simplified. For the ceramic capillary prepared by the method, the density reaches 6.0-6.10g/cm<3>; the hardness is greater than 1200HV; the bending strength is greater than 1200MPa; the dimensional tolerance of the inner hole is within 3 micrometers; the outside diameter grinding precision can reach 1-micrometer position precision; a glass capillary in a multi-core optical fiber collimator can be completely replaced; the matching precision with an optical fiber is high; the reliability meets a requirement of an optical passive device standard GR1209/1221.

The invention discloses coating type wave-absorbing aramid paper, a wave-absorbing honeycomb and a preparation method, and belongs to the technical field of functional materials, the coating type wave-absorbing aramid paper comprises aramid paper and a wave-absorbing layer coated on the surface of the aramid paper, the components of the wave-absorbing layer comprise an absorbent and a resin system, the thickness of the wave-absorbing layer is 0.02-0.1 mm, and the volume ratio of the absorbent to the resin system is 1: 1-1: 5. The coating type wave-absorbing aramid paper not only has high electromagnetic loss, stable electromagnetic parameters and large electromagnetic parameter regulation range, but also has good mechanical properties.

The invention discloses activated carbon fiber paper and a preparation method thereof. The activated carbon fiber paper adopts aramid fibrids as carriers, and the carriers are loaded with activated carbon fibers, wherein the lengths of the activated carbon fibers are within 1-8mm, and the aramid fibrids account for 10-50% of the activated carbon fiber paper in oven-dry mass. Compared with traditional activated carbon fiber paper, the prepared activated carbon fiber paper has the high adsorptive property and high strength.