95 results about "Hardness" patented technology

The invention discloses an antistatic polyfluortetraethylene film and a preparation method thereof, the method comprises the steps of: at first, utilizing 100 parts of polyfluortetraethylene powders and 1-20 parts of an antistatic agent to be admixed in a high-speed agitator, wherein, such an antistatic agent is a composite antistatic agent consisting of acetylene carbon black, graphite, metal conductive powders and the like; then preparing an antistatic polyfluortetraethylene film by means of mixing raw materials, prepressing and performing, sintering at high temperature, film forming by turning, trimming, winding and the like. The antistatic polyfluortetraethylene film prepared according to the invention has a permanent antistatic effect and can sufficiently dissipate the charges accumulated on the surface thereof owing to friction, the added antistatic agent powders can also cooperate and reinforce therewith to a certain extent, thus overcoming the characteristics of inferior abrasive resistance and low hardness, and improving the mechanical performance of the polyfluortetraethylene.

The invention discloses a double-tail four-functional hydrophilic UV (Ultraviolet) coating hardness assistant and a preparation method thereof. The preparation method comprises the following steps: firstly, reacting polyethylene glycol monomethyl ether, isocyanate and one-generation hyperbranched polymer to form a prepolymer I, and subsequently reacting a prepolymer obtained after crylic acid monomer is reacted with isocyanate with the prepolymer I, thereby preparing the double-tail four-functional hydrophilic UV coating hardness assistant. According to the preparation method, high-functionality hyperbranched molecules are adopted as primary reaction materials, the characteristics that the hyperbranched molecules are high in functionality but low in viscosity are taken, when the prepared hardness assistant is added into an aqueous UV resin, not only is the problem that a coating is always low in curing property but high in viscosity solved, but also the water solubility of the UV resin is improved, the hardness of the aqueous UV resin is also improved, and the application range of the aqueous UV resin is widened. When non-ionic polyethylene glycol methyl ether is connected to molecules, therefore the acid-alkali resistance of the coating is improved, an emulsion system is well stabilized, and experiment shows that the effect is good.

The invention discloses a reverse osmosis water purification system, a reverse osmosis water purifier and a control method. The reverse osmosis water purification system comprises a pretreatment unit as well as a water hardness sensor, a reverse osmosis treatment unit and an electric control system, wherein the water hardness sensor is arranged in front of the pretreatment unit and is used for detecting the water hardness of raw water; the reverse osmosis treatment unit is arranged behind the pretreatment unit and comprises a reverse osmosis membrane filtering device and a washing unit; the reverse osmosis membrane filtering device is used for purifying water treated by the pretreatment unit; the washing unit is used for washing the reverse osmosis membrane filtering device; the electric control system is used for adjusting the washing degree of the reverse osmosis treatment unit according to the water hardness detected by the water hardness sensor. By adopting the reverse osmosis water purification system disclosed by the invention, the washing degree can be adjusted according to the water hardness of the raw water, and the caking pollution of the reverse osmosis membrane filtering device can be prevented.

The invention relates to the technical field of water treatment, and particularly relates to and discloses a treatment method for recycling high-hardness and high-salinity waste water. The treatment method comprises the following steps: (1) removing organic matters, softening and removing salt for the first time by using a primary treatment system; (2) removing organic matters, softening and removing salt for the second time by using a secondary treatment system; (3) performing evaporation and freezing crystallization treatment on concentrated liquid. According to the treatment method for recycling high-hardness and high-salinity waste water, a physical and chemical treatment and membrane integrated technology and an evaporation and freezing crystallization technology are combined, high-quality water can be recycled, the resin is softened to regenerate internal supply of an acid and alkali medicament, industrial salt is generated, resources are utilized effectively and comprehensively,long-term effective and stable operation of the system is guaranteed, and the advantages of good treatment effect, stable and reliable operation and capability of completely utilizing resources are achieved.

The invention relates to the machining of gear teeth. The machining process comprises: Based on the drawing, it uses the hobber machining the gear to the inspection point A or D, computing the differential change wheel angle t based on the hobber differential mechanism with CB line actual spiral angle and gear and hobber parameter, loosening the differential change wheel, holding the change angle t, imitating the difference of machining small spiral gears, forming fixing point from the end surface fixing theoretical point C. It can get rid of the deficiencies of step, insufficient effective hardening and teeth surface hardness.

A nano-class inorganic composition modified weatherable acrylic acid-polyester powder paint is prepared from nano-class composition, solidifying agent, assistant, filler, polyester resin and acrylic resin through premixing, fusing-extruding-mixing, cooling, breaking, pulverizing and sieving. Its advantages are high anti-ageing nature, hardness, adhesive and impact strength.

The invention discloses a composite shaping technique method of iron pattern coated sand and an iron type core assembly. The composite shaping technique method relates to the technical field of casting. The composite shaping technique method comprises the following steps: manufacturing an upper casting model; sheathing a heated spare part iron pattern to the outside of a spare part electric heating die sample; jetting film-coated sand into between the part iron pattern and the part electric heating die sample by a sand coating machine, solidifying the film-coated sand to be 6-8 mm thick sand shell and adhering on the iron pattern; stripping and taking out the film-coated sand for spare use; manufacturing a film-coated sand core; jetting the film-coated sand in a part electric heating core box, solidifying the film-coated sand in the part electric heating core box and forming the film-coated sand core; manufacturing a lower casting model of the part; putting a combined film-coated sand core in the iron pattern to shape and glue, thereby obtaining the lower casting model of the part; combining the upper casting model with the lower casting model of parts, forming the part casting model; casting, cooling; separating and taking out the parts. Compared with the prior art, hardness of every part of the part cast by the composite shaping technique method is uniform and free from a phenomenon of high hardness.

Spherical composite particles comprise inorganic fine particles and resin fine particles of jointed to each other and the average particle diameter is in the range from 0.5 to 100 g m, in which the average particle diameter of the inorganic fine particles is in the range from 5 to 600 nm and the average particle diameter of the resin fine particles is in the range from 10 to 500 nm. The spherical composite particle comprises an inorganic fine particle and a resin fine particle each having almost same size, jointed to each other, and the hardness, softness, and adaptability to being spread on skin can finely be adjusted to desired ones in a wide range respectively according to the contact feeling required for the cosmetics in which the particles are blended.

The invention belongs to the field of optical thin film materials and particularly relates to a method for preparing a high-hardness antireflection film on the basis of hollow silicon dioxide. The method takes tetraethoxysilane as the raw material, polyacrylic acid as a templating agent, 2-isopropoxy ethyl alcohol and methyl alcohol as solvents together, and ammonium hydroxide as a catalyst to prepare a hollow SiO2 coating film sol through a template method, and a two-sided thin film is plated on a glass substrate through a dip-coating method. After being calcined at 550 DEG C, the antireflection film is obtained, the average light transmittance is more than 98% within the light transmittance wavelength range of 400-800 nm, and the hardness is more than 4H.

The invention relates to a combined type anti-fatigue cushion and a production method thereof. Vesicants with different amounts are added into polyvinyl chloride powder to form the anti-fatigue cushion as a whole in a foaming way or the existing finished polyvinyl chloride products are planished into tablets and then wear layer sizing material is arranged on the tablet to form the anti-fatigue cushion in a foaming way. The anti-fatigue cushion of the invention comprises a bottom foaming layer and a wear layer which covers the bottom foaming layer. On the one hand, the hardness of the bottom foaming layer is less than that of the wear layer, thus obtaining more elasticity and effectively relieving feelings of fatigue when users stand on the cushion. On the other hand, the polyvinyl chloride material can be saved so as to reduce the production cost of the anti-fatigue cushion.

The invention discloses an ultraviolet light-cured acrylate-layered double hydroxide nano composite material and a preparation method thereof; the preparation method is characterized in that a long-chain anionic surfactant is used for modifying inorganic layered double hydroxide by anion exchange; next, an acrylate modifier with isocyanate groups is used for modifying the surface hydroxyls of the layered double hydroxide, a large amount of high-reactivity acrylate groups are grafted; and finally, the layered double hydroxide used with modified surface is mixed with acrylate monomers, acrylate oligomer and an ultraviolet light initiating agent to obtain the ultraviolet light-cured acrylate-layered double hydroxide nano composite material. The preparation method has simple and easy operation, realizes high-degree delamination and good dispersion of the layered double hydroxide in a polymeric matrix. Compared with the pure acrylate material, the ultraviolet light-cured acrylate-layered double hydroxide nano composite material has high strength, high hardness and good thermal stability after being cured by the ultraviolet light, thus having wide industrial application prospect.

The invention belongs to the field of environment protection machinery and relates to a portable rubbish advertisement cleaning machine for cleaning rubbish advertisement adhering to the plane and a cylindrical face. The portable rubbish advertisement cleaning machine is characterized by mainly comprising a machine body, a power source, a transmission system and a cleaning system. The cleaning system comprises a cleaning mechanism, a water spraying plate included angle control mechanism and a telescopic rod, wherein the cleaning mechanism fixed to water spraying plates and is composed of small water-proof motors and disc brush heads, and the small motors drive the disc brush heads to rotate. The water spraying plate included angle control mechanism is arranged at the front end of the telescopic rod and is formed by connecting a threaded tube and the water spraying plates through a hinge, and the rotating threaded tube can change an included angle between the water spraying plates. The portable rubbish advertisement cleaning machine has the advantages that advertisements adhering to the plane and the cylindrical face can be cleaned, the advertisements of different paper hardnesses can be cleaned by replacing the brush heads, and the cleaning range can be controlled by adjusting the section number of the telescopic rod. The portable rubbish advertisement cleaning machine is simple in structure, low in cost, convenient and practical.

The invention provides a manufacturing method of a high-hardness plastic screen and a high-hardness plastic housing of a mobile phone, and a mobile phone screen and a mobile phone housing manufactured by the manufacturing method. The manufacturing method comprises the following steps: performing secondary compressing and forming to obtain a base plastic material; cleaning and drying the base plastic material through electrostatic eliminated drying gas for the first time; soaking in an adhesive for the first time; cleaning and drying the base plastic material covered with the adhesive through the electrostatic eliminated drying gas for the second time; soaking in enhanced liquid containing silicide, nanometer aluminum oxide and corundum for the second time; roasting; hardening; trimming. The product manufactured by the method is free of rainbow-like marks, high in light transmission rate, and high in density; the hardness of the product is up to 9H, and is equal to or beyond that of a traditional glass screen; in addition, the product is hard to break, so that the product can completely replace glass to be used as the screen of the mobile phone; compared with a glass material, the plastic is low in price, so that the cost of the mobile phone screen manufactured through the plastic is low, and as a result, the use cost of a user can be decreased.

Provided is a high-hardness and long-service-life steel wire cut shot producing method and production line. The high-hardness and long-service-life steel wire cut shot producing method is characterized by comprising the following steps of coarsely drawing and annealing steel wires, finely draying the steel wires and cutting, rounding, passivating and sieving the steel wires. The steel wire cut shots produced in the method are high in hardness, the hardness of the steel wire cut shots can reach 58-60 HRC, the steel wire cut shots are low in broken rate and long in durability, and the durability is more than 4000 times. The producing method is high in processing speed and can meet the requirements of domestic shot blasting industries.

A roller capable of easily absorbing impact transmitted thereto while maintaining a desired level of abrasion resistance, and a clothes drying apparatus provided with the roller. The roller is provided with an impact absorption enhancer capable of causing the roller to be easily elastically deformable while maintaining a desired hardness of the roller. Accordingly, it is possible to absorb intensive impact transmitted to the roller while maintaining a desired abrasion resistance of the roller.

The invention provides a method for detecting hard coating quality. The method includes: firstly machining a ball pit on the hard coating of a matrix according to a ball-milling technique, making the matrix exposed in the ball pit and letting the hard coating form an annular coating surface in the ball pit; then using a Vickers hardometer to extrude a conical indentation with a long bottom edge, a short bottom edge and two adjacent radial bottom edges on the annular coating surface, with a plane formed by the midpoint of the conical indentation's long bottom edge, the midpoint of the short bottom edge and the vertex of the conical indentation passing through the center of a ball corresponding to the ball pit, then employing a metallographic microscope to measure the radius a of a large circle corresponding to the upper part of the annular coating, the radius b of a small circle corresponding to the lower part of the annular coating, the distance L between two endpoints of the conical indentation's long bottom edge and the distance l between two endpoints of the conical indentation's short bottom edge, and then calculating the thickness T of the hard coating and the Vickers hardness by corresponding formulas. The method provided by the invention can measure thickness and test hardness combinedly at the same time, thus simplifying the measurement procedure and improving the efficiency of detection.

The invention belongs to the technical field of surface film reinforcement, and in particular relates to a preparation method of a Ta (Tantalum) film on a bearing steel surface. The preparation method comprises the following steps: firstly the bearing steel surface is pre-treated, ground, polished, then subjected to ultrasonic cleaning in an organic solvent, and dried; then a work piece is subjected to the surface sputtering cleaning in a vacuum state, and the nonmetallic ion implantation is carried out on the surface of the work piece; a Ta surface is subjected to sputtering cleaning, and a Ta-based film is deposited on the surface of the work piece obtained from the above procedures; and at last the nonmetallic ion implantation is carried out on the Ta-based film. By adopting the preparation method, the obtained bearing steel is high in hardness and good in wear resistance, the rigidity of the bearing steel is at least improved by 80%, the wear rate is reduced by 65%, and the service life of the bearing steel is efficiently prolonged. In addition, no obvious interface exits between the prepared film and a base, the metallurgical bonding can be achieved, the bonding force can be improved, and simultaneously the rigidity of the work piece is improved.

An antisticking, antiwear and lubricating paint solidified at ordinary temp and with high load-bearing power is prepared from tetrafluorowax, polyurethane resin, Sb2O3, and melamine-tripolycyanate complex. Its advantages are high hardness, high adhesion, and wide temp range (-50-200 deg.C).

The present invention involves a method of transferring a membrane image to an article. The method comprises providing a printed decoration to be applied onto a low surface energy membrane. The low surface energy membrane has a hardness level of greater than 70 durometer Shore A and a surface energy of up to 25 mJ/m². The method further includes applying a predetermined pressure with a pressure device to force the printed decoration through a screen onto the low surface energy membrane. The pressure device has a hardness of up to 70 durometer Shore A. The method further includes forming the low surface energy membrane to the geometry of the surface of the article and applying pressure between the membrane and the article to transfer the membrane image from the membrane to the article.

The invention discloses uvioresistant fluorocarbon metal anti-rust paint and a preparation method thereof. The uvioresistant fluorocarbon metal anti-rust paint is prepared from slurrying raw materials and paint mixing raw materials; a paint film formed by the anti-rust paint has high hardness, scratch resistance, strong adhesion, salt fog resistance, saline resistance, acid-base resistance, water resistance, oil resistance, ultraviolet light resistance, aging resistance, low temperature resistance and heat and humidity resistance; the anti-rust paint can be used on the surface of an old paint film repeatedly; and the damage to the paint film can be avoided, and the ultra strong toughness of the paint film can be guaranteed. The service life of the common paint film can be 8 to 10 years.