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53results about How to "Processing time" patented technology

Method for forming metal mobile phone shells

The invention discloses a method for forming metal mobile phone shells, and relates to the technical field of mobile phones. The method for forming the metal mobile phone shells includes stamping and bending metal plates to obtain integral outlines of the integrated mobile phone shells so as to obtain initial blank products; carrying out CNC (computer numerical control) machining on the initial blank products to obtain semi-finished products of the metal mobile phone shells; carrying out post-processing on the semi-finished products of the metal mobile phone shells to obtain the metal mobile phone shells. Arc structures are arranged between the side walls and the bottom walls of the integral outlines of the integrated mobile phone shells. CNC machining procedures include (1), milling off burrs on redundant thickness-size sides of the bottom walls and the side walls of the initial blank products under the CNC; (2), inwardly milling the outer walls of arc corners between the side walls and the bottom walls of the initial blank products under the CNC to obtain step structures and respectively forming C-angle edges at the step structures; (3), finely milling the C-angle edges of the step structures under the CNC. The C-angle edges are close to the bottom walls and the side walls of the initial blank products. The method has the advantages that a stamping forming procedure and a CNC machining procedure are combined with each other, so that the metal mobile phone shells can be formed, and the method is stable in process, high in machining precision and production efficiency, short in machining elapsed time and low in production cost.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Photocuable thiol-ene low gas permeability membranes

The present invention provides modified multifunctional thiol-ene monomers wherein one or more thiols are reacted with a Michael addition reactive double bond compound. The present invention further discloses photocurable thiol-ene formulations comprising thiol-ene monomers including the modified multifunctional thiols. The present invention further discloses photocurable thiol-ene formulations comprising thiol-ene monomers and Michael addition reactive double bond molecules and a Michael catalyst. The formulations of the present invention can be photocured to make films or coatings. In a further disclosure, the formulations, including those comprised of unmodified multifunctional thiols and multifunctional enes, are photocured to form films applied to non-flexible or flexible polymer or non-polymer substrates suitable for food packaging, electronic products, optical products and other applications and free-standing films. The present invention further discloses photocurable thiol-ene formulations comprising thiol-ene monomers and Michael addition reactive double bond molecules and a Michael catalyst. These formulations are disclosed to form free-standing films and coatings on substrates when applied to flexible substrates. Such materials are suitable for use in the packaging of food products and other products which are to be maintained in a hermetically sealed relationship to the atmosphere.
Owner:UNIVERSITY OF SOUTHERN MISSISSIPPI

Microalgae biodiesel production method

The invention discloses a microalgae biodiesel production method. The production method comprises the following steps of inoculating nannochloropsis oculata to a culture medium, irradiating through a red-blue dual-color LED light supplementing lamp for 8 to 14 hours per day, cultivating for 6 to 8 days at a temperature of 24 to 26 DEG C, and collecting nannochloropsis oculata cells; performing a wall breaking process on the collected nannochloropsis oculata cells through ultrasonic wave, then extracting through an organic solvent to obtain microalgae grease, and then adding the microalgae grease, methyl alcohol and a zeolite molecular sieve catalyst into to a reactor according to a mass ratio of 1 : (5 to 7) : (0.01 to 0.03) to perform esterification reaction, so as to obtain an esterification product; then separating and purifying the esterification product to obtain the biodiesel. According to the production method, the nannochloropsis oculata which is short in production period, wide in distribution, strong in photosynthesis and high in grease content is utilized as a raw material, so that the problem of vegetable oil and fat raw materials in biodiesel development is solved. The production method also has the advantages of being simple in preparation technology, high in catalytic efficiency, high in grease extraction rate, high in product yield, and the like, and also lays a good foundation for industrialization and scale of the biodiesel.
Owner:南宁华侨投资区政孙贸易有限公司
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