Abstract: The present disclosure provides a system and method for granulating and molding silicon liquid. The system includes a silicon liquid transferring device, wherein cooling system and a lifting system matching with the cooling system are provided below the silicon liquid transferring device. The silicon liquid transferring device transfers smelted silicon liquid to a position above the cooling system, uniformly pours the silicon liquid into the cooling system according a set flow to enable the silicon liquid to be solidified into silicon pellets, and then the molded silicon pellets are extracted by the lifting system, solving the problem in the prior art of irregular molding and inconsistent size of silicon blocks caused by pouring. A container bottom and a diversion pipe are set to be of detachable structures, and can be quickly disassembled and assembled as vulnerable parts without affecting the production.

Abstract: A manufacturing system and method for recycling and smelting crushed silica from silicon plants, including a crushed silica storage device, granulator, submerged arc furnace, transfer device, forming device and cooling system. Firstly silicon waste is collected, then crushed silica is output to a granulator. The granulator mixes the waste irregular crushed silica with water, and granulates and produces small particles having an uniform grain size as the raw material for smelting. The raw material is smelted in the submerged arc furnace. The forming device evenly pours the silicon liquid into the cooling system according to a set flow rate. The silicon liquid is solidified to form silicon pellets, and then a lift system is used to lift the formed silicon pellets, wherein the silicon liquid poured into the cooling system has a uniform diameter. The system can rapidly and efficiently smelt the silicon waste from the silicon plants.

Abstract: The present disclosure provides a system and method for granulating and molding silicon liquid. The system includes a silicon liquid transferring device, wherein cooling system and a lifting system matching with the cooling system are provided below the silicon liquid transferring device. The silicon liquid transferring device transfers smelted silicon liquid to a position above the cooling system, uniformly pours the silicon liquid into the cooling system according a set flow to enable the silicon liquid to be solidified into silicon pellets, and then the molded silicon pellets are extracted by the lifting system, solving the problem in the prior art of irregular molding and inconsistent size of silicon blocks caused by pouring. A container bottom and a diversion pipe are set to be of detachable structures, and can be quickly disassembled and assembled as vulnerable parts without affecting the production.

Abstract: A process for producing a silicon ingot by smelting silicon powder, including (a) furnace starting: preparing a silicon liquid having a standard purity in an intermediate frequency furnace; (b) silicon smelting: adding the silicon power to the silicon liquid for smelting, so as to obtain a silicon liquid; and (c) molding: reserving a silicon liquid accounting for 15%-20% of a capacity of the silicon liquid in the intermediate frequency furnace as an initial silicon liquid for a next smelting, and pouring the rest of the silicon liquid into a molding system, thereby producing the silicon ingot. The present invention uses weak conductivity of the silicon liquid to realize induction heating, achieving the purpose of smelting the silicon block. The approach provided by the present invention that uses the induction furnace to smelt silicon can largely improve the production and output efficiency.

Abstract: A manufacturing system and method for recycling and smelting crushed silica from silicon plants, including a crushed silica storage device, granulator, submerged arc furnace, transfer device, forming device and cooling system. Firstly silicon waste is collected, then crushed silica is output to a granulator. The granulator mixes the waste irregular crushed silica with water, and granulates and produces small particles having an uniform grain size as the raw material for smelting. The raw material is smelted in the submerged arc furnace. The forming device evenly pours the silicon liquid into the cooling system according to a set flow rate. The silicon liquid is solidified to form silicon pellets, and then a lift system is used to lift the formed silicon pellets, wherein the silicon liquid poured into the cooling system has a uniform diameter. The system can rapidly and efficiently smelt the silicon waste from the silicon plants.

Abstract: Dual-crosslinkable urethanes including urethanes having air curable ethylenic unsaturation and at least one moisture curable functionalized group exhibit good strength, chemical stability, and hardness and can be made by incorporating moisture curable functionalized groups into ethylenically unsaturated urethanes.

Abstract: A polyturethane dispersion is provided. The polyurethane dispersion includes 10 to 60 percent by weight of a polymeric polyol, 5 to 40 percent by weight of at least one compound containing both isocyanate reactive groups and meth(acrylate) groups wherein said compound comprises 1 to 30 percent by weight of at least one hydroxyl alkyl acrylate, 1 to 15 percent by weight of at least one compound comprising both isocyanate reactive groups and carboxyl groups, and 10 to 50 percent by weight of at least one isocyanate functional group.

Abstract: Provided herein according to some embodiments of the present invention are dual-crosslinkable waterborne urethane coating compositions including an ionically-charged urethane having oxidative curable ethylenic unsaturation and self condensing silanol functionality.

Abstract: A polyurethane dispersion is provided. The polyurethane dispersion includes 10 to 60 percent by weight of a polymeric polyol, 5 to 40 percent by weight of at least one compound containing both isocyanate reactive groups and meth(acrylate) groups wherein said compound comprises 1 to 30 percent by weight of at least one hydroxyl alkyl acrylate, 1 to 15 percent by weight of at least one compound comprising both isocyanate reactive groups and carboxyl groups, and 10 to 50 percent by weight of at least one isocyanate functional group.

Abstract: This invention relates to biologically active polypeptides derived from the E peptide that forms the C-terminus of the insulin-like growth factor I (IGF-I) splice variant known as mechano growth factor (MGF). These peptides are modified to improve their stability compared to the naturally occurring E peptide.

Abstract: Based on the law of dynamic water-separation, in this invention, a new type of front-mounted booster water-separation propeller has been designed to raise a vessel's speed by reducing resistance from water and increasing the advance force. It's composed of two parts, of which the external includes an influent tube (1), a left thin, flat gushing gutter (2), a right thin, flat gushing gutter (3), and screwed connections (6), of which interior includes a booster (4) and its axle (5). Both parts can be changed independently.

Abstract: Dual-crosslinkable urethanes including urethanes having air curable ethylenic unsaturation and at least one moisture curable functionalized group exhibit good strength, chemical stability, and hardness and can be made by incorporating moisture curable functionalized groups into ethylenically unsaturated urethanes.

Abstract: Hydrolytically stable polymer dispersions include ester linkages protected by hydrophobic alkyl groups which may be formed from polyester and alkyd polymer having ester linkages formed from secondary and/or tertiary hydroxy groups.

Abstract: Core/shell alkyd dispersions including ester linkages of the core formed from secondary or tertiary hydroxy groups demonstrate improved hydrolytic stability while heat aged core/shell alkyd dispersions and core/shell alkyd dispersions reacted with trimellitic anhydride also exhibit reduction in dispersion viscosity.

Abstract: A precrosslinked, urethane-acrylic dispersion formed from an isocyanate terminated urethane prepolymer reacted with mono-functional active hydrogen containing vinyl monomer and vinyl monomers inert to isocyanate functionality. To this polyurethane prepolymer having 0 to 100 percent vinyl termination—vinyl monomer blend is added a polyisocyanate having an average isocyanate functionality of less than 4 such that 0.5 to 20 percent of the urethane solids of the blend are polyisocyanate. The mixture containing less than 3 percent NCO groups, on solids, is dispersed into water and any residual isocyanate groups chain extended with one or more active hydrogen containing compounds. Optionally, the polyisocyanate can be added directly into the dispersion once the polyurethane prepolymer and the vinyl monomer blend is dispersed. The vinyl monomers are then reacted by free radical polymerization.

Abstract: The polyurethane-acrylic hybrid interpenetrating polymer network is formed by blending a polyurethane prepolymer having acid or amine salt forming groups, air curable ethylenic unsaturation and terminal isocyanate groups or both terminal isocyanate groups and terminal vinyl groups, with one or more vinyl monomers, inert to isocyanate functionality, dispersing the prepolymer/vinyl monomer blend into water, chain extending the terminal isocyanate groups of the prepolymer with one or more active hydrogen containing compound, and reacting the vinyl monomers by free radical polymerization.

Abstract: Waterborne polyurethane made using 1,12-dodecanediisocyanate, and prepolymers of such polyurethanes.