31results about How to "Meet the processing performance" patented technology

The invention discloses a magnetorheological finishing device for large-caliber aspheric optical parts. The magnetorheological finishing device comprises a machine tool, a finishing device, a magnetorheological finishing liquid circulating system for providing the finishing liquid with stable performance, and a control system connected with the components described above. The machine tool has four or more than four degrees of freedom. The finishing device is fixed on the machine tool and is positioned over the workpiece on the machine tool to be processed. The device has the advantages of simple and compact structure, low cost, simple control, wide range of application, and strong processing capacity, and is used for large-caliber aspheric optical parts.

The invention discloses a production method of glass fiber SMC yarn, which comprises the following steps: 1) preparation of an impregnating agent; 2) dosing; 3) melting in a kiln; 4) bushing; 5) coating with the impregnating agent; 6) drawing; 7) drying; 8) roving winding; 9) inspection and storage. According to the method disclosed by the invention, by adopting the complete-performance glass component and the special impregnating agent, the need of the drawing operation is met in the drawing technology while the processability of a later unwinding process is also guaranteed, thus the glass fiber SMC yarn has good acid resistance and water resistance, relatively high strength and good electric properties and mechanical properties.

The invention relates to a low temperature curing color coil coating, in particular to a low temperature curing color coil suede coating which comprises paint and a curing agent, wherein the paint and the curing agent are stored individually. The formula of the paint comprises the following components by weight proportion: 50% to 70% of saturated polyester resin, 5% to 8% of completely methylated melamine-formaldehyde resin, 1% to 2% of ethylenediamine surface active agent, 0.5% to 0.8% of closed p-toluenesulfonic acid catalyst, 5% to 20% of rutile titanium pigment, 5% to 19% of pigment, 3% to 5% of propylene glycol aether acetate, 2% to 5% of dibasic acid dimethyl ester, 5% to 10% of aromatic hydrocarbon solvent, 0.3% to 0.8% of dispersant and 0.3% to 0.8% of polytetrafluoroethylene wax.

The invention aims to provide an epoxy thermosetting resin composition that can be bent and have a film insulation layer, has reliability and processing characteristic that compare favourably with halogen-free FR-4, and is low in fluidity in a vacuum pressing process. The thermosetting resin composition includes (a1) liquid epoxy resin; (a2) solid epoxy resin; (b) aromatic diamidogen compound with ether group; (c) solvent soluble polyimide resin with weight-average molecular weight below 50000; and (d) phenoxy resin. The amount of (c) solvent soluble polyimide resin with weight-average molecular weight below 50000 and (d) phenoxy resin is more than 15 parts by weight and less than 100 parts by weight when the total amount of the (a1) liquid epoxy resin, (a2) solid epoxy resin, (b) aromatic diamidogen compound is arranged to be 100 parts by weight.

The invention discloses a colorful fingerprint-resisting coating, which comprises the following components in parts by mass: 50-70 parts of water-based macromolecular latex, 5-10 parts of deionized water, 15-25 parts of pigment, 5-10 parts of resin, 0.1-1 part of wetting agent, 0.5-1 part of flatting agent, 0.1-1 part of antifoaming agent and 1-5 parts of silane compound. Accordingly, the invention discloses a preparation method and a use method of the colorful fingerprint-resisting coating. The colorful fingerprint-resisting coating does not contain metal ions, and has excellent environmental conservation, decay resistance and fingerprint resistance.

The invention discloses low-temperature curing primer-topcoat coil coating back paint and a preparation method thereof. The low-temperature curing primer-topcoat coil coating back paint is prepared from the following components in mass ratio by stirring and mixing under the rotating-speed stirring condition: 40-48% of saturated polyester resin, 4-8% of amino resin, 2-6% of epoxy resin, 18-25% of pigment, 6-10% of functional anticorrosion pigment, 6-10% of filler, 10-20% of a solvent, 0.4-1.1% of a dispersing agent, 0.3-0.6% of a leveling agent, 0.1-0.5% of a defoaming agent, 2-4% of an adhesion promoter and 0.4-0.8% of a catalyst. The low-temperature curing primer-topcoat coil coating back paint product has low curing temperature and can meet hardness, toughness, corrosion resistance, acid resistance, alkali resistance, heat resistance and processability required by a galvanized steel sheet, and a single coating has excellent adhesive force, machinability and anti-corrosion property. The low-temperature curing primer-topcoat coil coating back paint product is simple in preparation technology, is applicable to being coated on the surfaces of a hot galvanized steel sheet, an electro-galvanized steel sheet and a cold-rolled steel sheet, so as to form a colorful coating protective film, and is also applicable to continuous roller painting of a continuous coating high-speed production line.

The invention discloses bake hardening type high-strength steel. The bake hardening type high-strength steel comprises, by mass percentage, 0.05 to 0.13% of C, 0.05 to 0.20% of Si, 0.50 to 1.50% of Mn, 0.02 to 0.06% of Al, larger than 0 and not larger than 0.0050% of N, and the balance iron and other inevitable impurities, and in addition, the condition that B-0.77*N is larger than or equal to 0.0005 and smaller than or equal to 0.0020% should be met. According to the bake hardening type high-strength steel, under the condition of not adding precious metals such as Mo, Cr, Ti and Nb, by controlling the mass percentage of carbon, manganese and boron, the technological processes and the technological parameters, the steel which is high in strength, low in cost, high in surface quality and of which the machining performance meets the requirements of automotive parts is manufactured.

The invention provides a preparation method of a puncture-resistant high-barrier co-extrusion film, relates to the technical field of packaging materials, and solves the technical problems that a PE film and a PP film in the prior art are low in puncture resistance, poor in tensile resistance and low-temperature resistance and prone to bag breaking and poor sealing. The co-extrusion film comprisesa composite layer, a first core layer, a second core layer and a heat sealing layer, and the co-extrusion film is formed by blow molding and co-extrusion of the composite layer, the first core layer,the second core layer and the heat sealing layer which are sequentially arranged. The co-extrusion film provided by the invention integrates a series of mechanical properties such as puncture resistance, stretching resistance, impact resistance, tear resistance and the like, and in addition, on the premise of ensuring the mechanical properties, the processability of a product and the use performance of a client need to be met at the same time.

The invention relates to an aluminum-plated ternary copolymerized polypropylene casting film resin composition, which comprises the following raw materials by weight: 1000 parts of a ternary copolymerized polypropylene resin, 1.0-1.6 parts of an antioxidant 1, 0.5-1.0 part of an antioxidant 2, and 0.15-0.5 part of a halogen absorbent, wherein the ternary copolymerized polypropylene resin comprises5.5-10 wt% of 1-butene, 0.5-1.5 wt% of ethylene, and the balance of propylene. According to the present invention, the ternary copolymerized polypropylene composition has characteristics of excellentimpact strength, excellent rigidity and low n-hexane extract under the premise of meeting of the processing property, the aluminum plating property, the optical property and the thermal adhesive property of food-grade aluminum-plated films, and can completely meet the production requirements of high-end casting film packaging manufacturers on metalize cast polypropylene.

The invention relates to an ultra-thin small-caliber high-resolution endoscopic microscope objective which comprises a first lens, a diaphragm, a second lens, a third lens and a fourth lens sequentially arranged from the object side. All the lenses are spherical lenses and are separately arranged by taking air as an interval, the first lens has negative focal power, the object side surface of the first lens is a plane, and the image side surface of the first lens is a concave surface; the second lens has positive focal power, the object side surface of the second lens is a convex surface, and the image side surface is a convex surface;the third lens has positive focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the fourth lens has positive focal power, the object side surface of the fourth lens is a convex surface, the image side surface of the fourth lens is a convex surface, the maximum clear aperture is less than or equal to 0.6, the axial distance from the object side surface of the first lens to the imaging surface is less than or equal to 4.0 mm, and 1.1< f*TAN(HFOV)/T34< 2.3. The endoscopic microscope objective is small in caliber, small in thickness, high in resolution, compact in structure, convenient to machine and install and good in imaging quality, and the requirements for miniaturization and light weight of the medical endoscopic microscope objective are met.

The invention discloses a vacuum brazing welding piece blank material and a preparation method thereof. The preparation method comprises the following steps that raw materials are prepared, and the raw materials comprise an aluminium ingot, waste aluminum and aluminum-silicon intermediate alloy; the raw materials are added into a smelting furnace and are ignited to be melted; after the raw materials are completely liquefied into aluminum water, silicon content blending is firstly performed, then the aluminum water is guided into a standing furnace to perform magnesium content blending, after the two-time ingredient blending, the silicon content is not more than 9.0%, and the magnesium content is not more than 0.35%; and cast rolling is performed to obtain cast rolling rolls, namely the vacuum brazing welding piece blank material. According to the vacuum brazing welding piece blank material and the preparation method thereof provided by the invention, the production cycle is short, material consumption is low, and the blank material has no holes, is not prone to breaking and is easy to roll.

The invention discloses a color-matching conductive polysulfone material and a preparation method thereof. The color-matching conductive polysulfone material is composed of the following raw materialsby weight: 43-88.8 parts of polysulfone as a main material, 1-5 parts of nano SiO2 as an auxiliary material, 10-50 parts of nanometer conductive modified TiO2 as an auxiliary material, and 0.2-2 parts of a lubricant as an auxiliary material. The nano conductive modified TiO2 modified PSU material disclosed by the invention has good conductivity, ultrahigh temperature resistance, freely selectablecolors and good warping resistance flatness, and can meet the increasingly developed complex electronic element processability.