8results about How to "Change roughness" patented technology

The invention discloses a preparation method of an antibacterial PEEK material for bone implantation. The preparation method comprises the following steps: carrying out sand blasting treatment on the surface of a PEEK sample; immersing the sandblasted PEEK sample into a mixed solution containing concentrated sulfuric acid and hydrogen peroxide, and carrying out chemical sulfonation treatment; immersing the sulfonated PEEK sample into a dopamine solution, so that dopamine is oxidized and self-polymerized on the surface to form a PDA coating; immersing the PEEK sample with the PDA coating into an antibacterial drug solution, so that the antibacterial drug is loaded on the surface; carrying out heat treatment on the PEEK sample loaded with the antibacterial drug; thoroughly cleaning the sample, removing uncombined antibacterial drug molecules, and drying; through sand blasting treatment and sulfonation treatment, the surface roughness and hydrophilicity of the PEEK material are remarkably improved, and favorable conditions are provided for adhesion of a dopamine coating and an antibacterial agent; due to introduction of the dopamine coating, the biocompatibility and the adhesion of the material are enhanced, and the dopamine coating also serves as an effective carrier of antibacterial drugs, so that the antibacterial function is maximized.

The invention discloses a preparation method of a metalized vertical glass through hole. The preparation method comprises the following steps: modifying a target area of a glass substrate by adopting a laser irradiation method to form a denatured area; forming a first metal layer on the glass substrate in a sputtering manner; ablating the first metal layer corresponding to the denatured region by adopting an ultraviolet radiation method so as to expose the denatured region; etching the denaturation region by using a corrosive liquid to form a first blind hole; cleaning and drying the glass substrate; forming a second metal layer on the glass substrate in a sputtering manner; ablating the second metal layer at the bottom of the first blind hole by adopting an ultraviolet radiation method; etching the first blind hole by using a corrosive liquid to form a second blind hole; cleaning and drying the glass substrate; and repeating the steps (6)-(9) to obtain the metalized vertical glass through hole. According to the preparation method, the glass through hole with high depth-diameter ratio and good perpendicularity can be prepared, and meanwhile, the metal layer can be stably and uniformly attached to the inner wall of the glass through hole.

The invention discloses an ultra-black coating with wide-angle absorption as well as a preparation method and application of the ultra-black coating, and belongs to the technical field of ultra-black coatings and preparation of the ultra-black coatings. The problem that an existing ultra-black coating cannot present extremely low scattering and high absorptivity under large-angle incident light is solved. According to the method, carbon black is used as an absorbent, a high-temperature-resistant silica sol solution is used as a binder, a stable structure is formed by adopting a one-step sintering method, and meanwhile, an ultra-black coating with a forest-shaped light trap array structure is constructed. The refractive index of the surface of the coating is obviously changed by utilizing the forest-shaped array structure on the surface of the ultra-black coating, so that the optical reflection of the surface is reduced; the surface forest-like light trap structures are closely arranged, so that light incident from each angle can be reflected back and forth in the structure, the incident light is absorbed to the greatest extent, stable high light absorption at a wide angle is realized, the reflectivity of the ultra-black coating does not change obviously along with the angle of the incident light, and the deep space detection precision of a space optical system is improved.

The application discloses a repairing method for a bulk SiC f / SiC ceramic matrix composite component, which mainly comprises the steps of machining pretreatment, fiber preform repairing, fiber line reinforcing and CVI deposition repairing. In the machining pretreatment step, the damaged material is cut into dovetail type protrusions, and the thickness of the part is slightly reduced to leave space for fiber line winding. In the fiber preform repairing step, ceramic fibers are woven into a preform with the same thickness as the dovetail type protrusions in the form of 2.5D, an internal groove matched with the preform is processed, and the preform is spliced with the material to be repaired in the form of a mortise and tenon structure. In the fiber line reinforcing step, SiC fiber lines are cross-wound in perpendicular directions to reinforce the mortise and tenon connection part. In the CVI deposition repairing step, the fiber preform and the fiber lines are deposited by means of a CVI process, so that they become SiC f / SiC ceramic matrix composite, which is closely connected with the damaged part by the cooperation of the dovetail type part, the cross-winding of the fiber lines and the mortise and tenon structure, so that the damaged material is repaired.

The application discloses an ultrablack coating with wide-angle absorption and a preparation method and application thereof, and belongs to the technical field of ultrablack coatings and preparation thereof. The application solves the problem that the existing ultrablack coating cannot present extremely low scattering and high absorption under large-angle incident light. In the application, carbon black is used as an absorbent, a high-temperature-resistant silica sol solution is used as a binder, and a one-step sintering method is adopted to form a stable structure and construct an ultrablack coating with a forest-like light trap array structure. The forest-like array structure on the surface of the ultrablack coating significantly changes the refractive index of the coating surface, thereby reducing the surface optical reflection; the surface forest-like light trap structure is closely arranged, can make the light incident from each angle to reflect back and forth in the structure, and then maximally absorbs the incident light, realizes stable high light absorption under wide angles, makes the reflectivity of the ultrablack coating not obviously change with the angle of incident light, and improves the deep space exploration precision of a space optical system.

This invention discloses an organofluorosilicone emulsion deepening agent, which is made from the following raw materials in parts by weight: 3-9 parts of hexamethylcyclotrisiloxane, 2-4 parts of trifluoropropylmethylcyclotrisiloxane, 1-3 parts of hexamethyldisiloxane, 3-9 parts of vinyldisiloxane, 1-3 parts of emulsifier, 0.1-0.6 parts of catalyst, and 2-6 parts of acrylate monomer. The organofluorosilicone monomer is prepared by ring-opening reaction of hexamethylcyclotrisiloxane, trifluoropropylmethylcyclotrisiloxane, and hexamethyldisiloxane under the action of trifluoromethanesulfonic acid catalyst. Then, the emulsifier is used to emulsify the monomer to obtain organofluorosilicone emulsion I. This invention has a simple preparation method, can reduce dye affinity, and inhibit dye migration. Furthermore, by changing the amount of emulsifier, the particle size of the emulsion can be adjusted, and emulsions of different particle sizes can be mixed together to form a film with different roughness, thus achieving a deepening effect.

The present disclosure describes a frictional force measuring device comprising: a body defining an interior volume, the body having a plurality of receptacles concavely disposed in a top surface thereof for receiving balancing weights; an engagement device extending through a sidewall of the body to extend into the interior volume; a force sensor disposed in the internal volume and connected to the engagement means to sense a pulling force applied via the engagement means; the display screen is arranged in the side wall of the main body and is in communication connection with the force sensor so as to display the tension value sensed by the force sensor; and a plurality of friction bottom plates interchangeably mounted to the bottom surface of the main body.

This utility model belongs to the field of insole technology, specifically a healthy walking assistive insole. Addressing the problem that existing traditional walking assistive insoles have limited function, only providing cushioning and failing to effectively support key areas such as the arch, heel, and metatarsals during prolonged walking or exercise, easily leading to foot fatigue and diseases, this invention proposes the following solution: It includes a support layer, a cushioning layer, a breathable layer, and a protective layer. The top of the support layer is bonded to the bottom of the cushioning layer, and the bottom of the support layer is bonded to the top of the breathable layer. In this utility model, the support structure precisely supports the foot in the heel, metatarsal, and arch support areas, relieving walking fatigue and preventing diseases. Massage protrusions are located in the forefoot and arch contact area, massaging the sole of the foot during walking and promoting blood circulation. The contact layer uses silver ion antibacterial fabric to inhibit bacteria, and combined with the pores in the breathable layer and the side pores in the support layer, it ensures air circulation, keeping the feet dry and odor-free.