13results about How to "Strong scratch resistance" patented technology

The invention provides a preparation method of a waterborne polyurethane acrylate wear-resistant anticorrosive coating, which comprises the following steps: (1) in the presence of sodium methoxide as a catalyst, diethanol amine reacts with palm oil, so that active hydroxyl groups are grafted on the surface of the palm oil, which is beneficial to the subsequent reaction of waterborne polyurethane; (2) performing reaction on isophorone diisocyanate, the modified palm oil and pentaerythritol triacrylate to obtain waterborne polyurethane acrylate; and (3) grafting isophorone diisocyanate onto the graphene, and then reacting the graphene graft with N, N-dimethylethanolamine, so that more active sites are provided for the surface of the graphene after grafting, and the dispersity and compatibility of the graphene are improved. The method is simple and convenient to operate and few in process steps; the reaction time is short and the energy consumption is low; the raw materials are cheap, easily available and environment-friendly; the prepared waterborne polyurethane acrylate coating is good in wear resistance and corrosion resistance.

The invention discloses a styrene resin composition which comprises the following components in parts by weight: 70 parts of styrene resin; 5-15 parts of kaolin with a lamellar structure; 0.5 to 1.5 parts of a dispersing agent; 2-5 parts of a compatilizer; wherein the dispersing agent is a compound of a silane coupling agent and a titanate coupling agent, and the weight ratio of the silane coupling agent to the titanate coupling agent is (1.5-3): 1; the compatilizer is selected from a styrene-acrylonitrile-glycidyl methacrylate ternary random copolymer. According to the invention, the kaolin with a specific specific surface area and a lamellar structure, the dispersing agent with a specific ratio and the styrene-acrylonitrile-glycidyl methacrylate ternary random copolymer with a specific GMA content are selected, so that the scratch resistance and the dimensional stability can be improved at the same time.

The utility model discloses picture frame glass and a picture frame, and relates to the technical field of glass, the picture frame glass comprises a glass substrate, and an antireflection explosion-proof film is attached to one side of the glass substrate; the anti-reflection explosion-proof film comprises a film base layer, an anti-reflection layer group and a first explosion-proof layer; the anti-reflection layer group and the first explosion-proof layer are sequentially arranged on one side, far away from the glass substrate, of the film base layer; and an antireflection film is plated on one side, far away from the antireflection explosion-proof film, of the glass substrate. The picture frame comprises a frame body and picture frame glass, the picture frame glass is embedded in the inner side of the frame body, the frame body comprises a first extension section and a second extension section, the upper end of one side of the picture frame glass is attached to the inner side wall of the first extension section through sealant, and the lower end of one side of the picture frame glass is attached to the inner side wall of the second extension section through sealant. The picture frame glass and the picture frame have the effects of double-sided antireflection, weight reduction and explosion prevention.

This utility model discloses a magnetic charging base for walkie-talkies, relating to the field of charging technology for wired communication equipment. It includes a base assembly, and a magnetic head assembly is used for charging the walkie-talkie. The magnetic head assembly is connected to a control box assembly via a plug cable. The end face of the base assembly has a charging interface, a groove, and an anti-slip liner, while the end face of the magnetic head assembly has a charging port, a magnetic surface, and a protrusion. This magnetic charging base for walkie-talkies uses a magnetic connection for charging through the cooperation of the charging interface, charging port, and magnetic surface. It utilizes magnetic force to achieve a fast and stable connection, eliminating the need for cumbersome physical plugging operations, making operation simple and convenient. Simultaneously, the mechanical interlocking of the groove and protrusion assists the magnetic connection, and the high-friction anti-slip liner forms a three-dimensional anti-slip mechanism, solving the problem of insufficient stability in traditional magnetic charging and achieving a multi-dimensional anti-displacement effect.

The application relates to the technical field of electroplating, and discloses a chromium electroplating process for improving the hardness of a connector terminal, which comprises the following steps: performing surface pretreatment on the connector terminal, removing surface impurities through ultrasonic cleaning and micro-etching treatment; performing heating treatment on the connector terminal; performing electroplating treatment on the connector terminal by using an electroplating solution comprising trivalent chromium salt, boron nitride nanoparticles, ferroferric oxide nanoparticles, nickel ions, sodium dichromate and chromium alloy additives, so as to form a chromium plating layer; performing passivation treatment on the plating layer; performing low-temperature treatment on the plating layer; and spraying a protective layer on the chromium plating layer. Through the trivalent chromium salt and the sodium dichromate, the trivalent chromium salt is used to reduce hexavalent chromium ions into trivalent chromium, the toxicity of the hexavalent chromium is reduced, the sodium dichromate is used to provide a stable chromium source, the deposition of chromium elements in the electroplating process is ensured, the pollution of hexavalent chromium to the environment and the harm of hexavalent chromium to the health of operators are solved, and the environmental protection and safety of the electroplating process are improved.

The invention relates to a preparation method of an angle-free UV curing shaping protective film. Comprising a film body, and the film body is sequentially provided with a self-repairing layer, a polyurethane acrylate layer, a UV secondary curing layer and a bonding layer from the upper surface to the lower surface; the self-repairing layer is formed by coating the polyurethane acrylate layer with organic silicon modified polyurethane acrylate and curing the organic silicon modified polyurethane acrylate; the organic silicon modified polyurethane acrylate comprises polyurethane acrylate, alkyl hydroxyl polydimethylsiloxane, methyl methacrylate, a silane coupling agent, a photoinitiator, a defoaming agent and a solvent; the UV secondary curing layer is formed by coating polyol modified acrylic resin on the polyurethane acrylate layer and curing, and the polyol modified acrylic resin consists of polyol, methyl methacrylate, butyl acrylate, a photoinitiator, a solvent and a flatting agent. The protective film can be tightly attached to the curved screen, the phenomena of white edges and edge warping are avoided, and meanwhile the protective film has good flexibility and scratch resistance.

The utility model discloses a water transfer printing processing device for sound heater shell materials, which comprises a rack and a transfer printing liquid box, the transfer printing liquid box is arranged at any end of the rack, guide rails are respectively arranged on two sides of the upper portion or the top of the rack along the long axial direction of the rack, moving mechanisms which are movably matched with the two guide rails are arranged on the two guide rails, and transfer printing clamping mechanisms are arranged on the moving mechanisms. A cleaning mechanism is arranged at the upper part of one end, opposite to the transfer printing liquid box, of the rack; wherein the transfer printing clamping mechanism comprises a mounting plate, lifting driving pieces and grabbing claws, the mounting plate is arranged on the moving mechanism, the top of the mounting plate is provided with at least four lifting driving pieces, the lifting driving pieces penetrate through the mounting plate downwards, and the grabbing claws are movably hinged to the lower ends of the lifting driving pieces respectively. The semi-automatic transfer printing device can effectively replace manual transfer printing operation, is good in transfer printing operation stability, clear in pattern and free of distortion, reduces labor intensity, achieves semi-automatic transfer printing operation, and effectively improves transfer printing work efficiency.

The invention discloses a polyolefin pipeline anti-scratch and anti-scald protective material, the protective material is prepared by taking a polyolefin granulation material, color master batch and azodicarbonamide as raw materials, and the polyolefin granulation material is prepared by taking polyolefin, modified hollow glass beads, maleic anhydride grafted polyolefin, a lubricant, a stabilizer and an antioxidant as raw materials. The protective material is prepared, the protective material is compounded outside an original polyolefin pipeline through a multi-layer co-extrusion technology to serve as a protective layer, and the protective layer has very high anti-scratching, anti-scalding, heat-insulating and anti-impact performance, so that the polyolefin composite pipe is prevented from being scratched and scalded in the transporting, loading and unloading processes; and the service life of the polyolefin composite pipe is obviously prolonged.

The invention discloses a polycrystalline strong and tough boroaluminate microcrystalline glass and a preparation method thereof, belonging to the technical field of microcrystalline glass. Li2CO3, Al2O3, B2O3, BaCO3, Nb2O5 and Ta2O5 are mixed, melted at high temperature, cast and annealed to obtain a base glass without crystallization, and then crystallized by program temperature control to obtain a base glass. The main crystal phase precipitated is LiAl7B4O 17 The secondary crystalline phase is LiTaO3 and / or LiNbO3. The existence of the secondary crystalline phase effectively hinders the expansion of cracks. Since the LiTaO3 or LiNbO3 crystal phase has piezoelectric effect, when the glass is impacted by external force, the energy that can cause the glass to be damaged can be partially absorbed by the secondary crystalline phase LiTaO3 or LiNbO3, and part of the destructive stress energy is absorbed and converted through the piezoelectric effect, and part of the crack extension energy is consumed through domain transformation, thereby improving the hardness and fracture toughness of the microcrystalline glass.

The invention discloses a display module and electronic equipment, and belongs to the field of electronic equipment.The display module comprises a display layer, a cover plate, an optical hard layer and a protective layer, the cover plate, the optical hard layer and the protective layer are sequentially stacked on the surface of the display layer, the protective layer comprises a diamond-like carbon film layer, and the diamond-like carbon film layer is arranged on the surface of the display layer. The optical hard layer comprises a silicon oxide film layer and a silicon nitride film layer which are mutually stacked.

The invention discloses a water-based ceramic red dot coating as well as a preparation method and a coating method thereof. The water-based ceramic red dot coating comprises a bottom coating, a first red dot ink layer, a second red dot ink layer and a surface coating which are sequentially coated, the first red dot ink layer and the second red dot ink layer are two kinds of red ink with different color depths; in a normal temperature state, the color of the first red dot ink layer is darker than that of the second red dot ink layer; when the temperature rises, the color of the second red dot ink layer is darkened, and when the set cooking temperature is reached, the color of the second red dot ink layer is overlapped with that of the first red dot ink layer. The invention has the characteristics of high hardness, no ceramic cracking or cracking, lasting non-stickiness, and red dot pattern capable of indicating cooking temperature.

This invention relates to the field of fire-resistant insulated cable manufacturing technology, and discloses a continuous manufacturing process for high-yield mineral-insulated fire-resistant cables, comprising: pretreatment, drawing pure copper rods into wires and then stranding and pressing them to obtain stranded copper conductors; insulation wrapping, wrapping mica tape around the outer wall of the stranded copper conductors to obtain an insulating core; filling and forming, longitudinally wrapping copper tape around the outer wall of the insulating core, and filling the space between the copper tape and the insulating core with magnesium oxide powder to form an insulating layer; sheath welding, welding the gaps between the copper tapes after longitudinal wrapping to obtain a copper protective sheath; corrugating and shaping, rounding the copper protective sheath, and then rolling the copper protective sheath into a corrugated tube shape to obtain a cable; softening and straightening, performing a first annealing treatment and a second annealing treatment on the cable in sequence, and performing a first water cooling treatment on the cable after the first annealing treatment; protection and cooling, placing the cable after step six into a nitrogen pipeline for cooling, and then performing a second water cooling treatment on the cable.

The invention discloses a method for preparing a highly transparent high-borosilicate glass, and belongs to the field of high-borosilicate glass manufacturing. The preparation method comprises preparing rare earth chloride treated silicon dioxide by an aerogel method, preparing phosphorus modified lithium oxide flux, and preparing glass by a float method. The high-borosilicate glass prepared by the invention has excellent optical properties, not only has high light transmittance, but also does not undergo optical deformation at a larger incident angle, with a visible light transmittance of 98.5-98.8%, a total solar energy transmittance of 98.7-99.2%, and an incident angle of 157-165° when the glass undergoes optical deformation at a distance of 4.5 m.