5results about How to "Antioxidant" patented technology

This utility model relates to the field of packaging material technology and discloses an internally reinforced waterproof outer box, including a base plate. A limiting groove is formed on the top of the base plate, and a box assembly is inserted into the inner side of the limiting groove. A waterproof layer is provided on the outer side of the box assembly. Handles are provided on the left and right sides of the box assembly. A limiting block is fixedly installed on the top of the base plate, and a base is inserted into the top of the limiting block. A limiting groove is formed on the bottom of the base, and an mounting block is fixedly installed on the top of the base. A limiting groove is formed on the top of the mounting block, and a reinforcing rod is inserted into the inner side of the limiting groove. This internally reinforced waterproof outer box, by setting the reinforcing rod, ensures that the box lid abuts against the reinforcing rod during installation, thereby improving the vertical compressive strength and stability of the box assembly. The insertion relationship between the box lid, the box assembly, and the reinforcing rod prevents the box lid from easily detaching due to external force.

This invention relates to a method for preparing a copper surface protectant, comprising: adding pure water to a reaction vessel until the pure water accounts for 30% of the volume fraction of the reaction vessel, then sequentially adding a compound as shown in formula (I), acetic acid, a compound as shown in formula (II) or (III), a compound as shown in formula (IV), and a nano-directional dispersant, and adding pure water to the liquid level of the reaction vessel; stirring for 1 hour, allowing to stand for 1 hour, and filtering to obtain the copper surface protectant. The copper surface protectant of this invention can form a copper surface protective layer with resistance to alkali stripping and acid etching. This copper surface protective layer has the properties of resisting high temperatures (150°C, no discoloration of copper within 2 hours), no discoloration of copper after three reflow soldering cycles, oxidation resistance, and fluxing effect; furthermore, the surface tension of the copper surface protectant solution is 30 dyn / cm, which can perfectly cover micro-blind holes.

The utility model relates to the technical field of gluing machines, and particularly discloses a gluing machine which comprises a workbench, a frame, an adjusting mechanism and a gun head, the frame is located above the workbench, the adjusting mechanism is arranged on the frame, the gun head is arranged on the adjusting mechanism, and the adjusting mechanism comprises a transverse driving mechanism and a vertical driving mechanism. The transverse driving mechanism is arranged at the top of the frame, the vertical driving mechanism is arranged on the front face of the transverse driving mechanism, the gun head is installed on the vertical driving mechanism, the adjusting mechanism is fixedly connected with a glue barrel through a frame body, the bottom of the glue barrel is communicated with the top of the gun head, the oil cup is installed on the workbench, and anti-rust oil is contained in the oil cup. After gluing is finished, the gun head moves into the oil cup, the gun head opening is soaked in anti-rust oil, the situation that residual glue in the gun head makes contact with air and is air-dried and solidified, and consequently blockage is caused is effectively avoided, the gun head does not need to be cleaned, the gluing machine can conduct gluing work in time, and the working efficiency is improved.

The invention belongs to the technical field of traditional Chinese medicine nursing, and discloses a traditional Chinese medicine health-care comb and a preparation method thereof.The traditional Chinese medicine health-care comb is prepared through the steps that traditional Chinese medicine powder, nanmu sticky powder, a nanometer whisker reinforcing agent and composite antibacterial factors are subjected to dry mixing and then mixed with a traditional Chinese medicine extracting solution according to the mass ratio of 1: 1, and compression molding is conducted; the mass ratio of the traditional Chinese medicine powder to the nanmu sticky powder to the nano whisker reinforcing agent to the composite antibacterial factor is (65-70): (20-25): (5-8): (2-3); through a double-effect fusion mode of the medicine powder and the extracting solution, combination of physical massage and medicine effect permeation is achieved, compatibility of multiple medicinal materials is achieved, the traditional Chinese medicine theory and scalp care requirements are considered, and multiple health-care effects of nourishing blood and blacking hair, growing hair and preventing hair loss, promoting blood circulation to remove meridian obstruction and balancing the scalp environment are achieved; meanwhile, a nano whisker reinforcing agent and a composite antibacterial factor are also added, so that the problems that the traditional Chinese medicine health-care comb is easy to break and mildew and short in service life in life and use are solved.

The utility model relates to brake disc wheel end axle technical field, especially, a kind of maintenance-free brake disc wheel end axle, it include: axle housing assembly, maintenance-free wheel hub bearing unit assembly, wheel hub brake disc assembly.The carbon-tao brake disc in the utility model is installed on base by inlaying, base is locked to maintenance-free wheel hub bearing unit assembly, so that wheel hub brake disc assembly and maintenance-free wheel hub bearing unit assembly can be conveniently and quickly assembled to axle housing assembly, and the brake disc of wheel hub brake disc assembly is carbon-tao brake disc, with carbon fiber reinforced silicon carbide base composite material as main material, with high temperature resistance, wear resistance, high hardness, oxidation resistance and other advantages, longer service life, vehicle assembly driving million kilometers without replacement, can realize vehicle full cycle without disassembly and maintenance, it is used with maintenance-free wheel hub bearing unit assembly, to realize without needing to do regular maintenance treatment for wheel end, cost reduction, spare parts are also not easy to be damaged due to disassembly, higher safety.