The invention provides a piezoresistive electronic skin, a preparation method and a use thereof. The piezoresistive electronic skin uses carbon nanotube film as the conductive layer and uses materials provided with micro-nano patterns, such as polydimethylsiloxane, polyethylene terephthalate, polyvinyl alcohol, polyvinyl formal, polyethylene, and so on, as the substrate, enabling the substrate has advantages of high flexibility and being pliable, and it needs low operating voltage and little power consumption, but has high sensitivity and short response time. More importantly, the invention uses the patterned flexible substrate as the basis, greatly improving the sensitivity of electronic skin reacting to tiny applied force from outside. The invention also provides a capacitive electronic skin and a preparation method thereof. Further, the invention also provides a use of the piezoresistive electronic skin or the capacitive electronic skin on speech recognition, pulse detection, medical robot, etc.

A cover for a housing of an electric machine is provided. The cover may include an inner sidewall and an outer sidewall. The outer sidewall may be spaced apart from the inner sidewall to define a coolant channel therebetween. The inner sidewall and outer sidewall may be defined by an interior surface of the cover such that the coolant channel receives end windings of a stator of the electric machine when the cover is secured to the housing. The interior surface of the cover may define features between the sidewalls to promote turbulence of coolant flowing through the coolant channel. The interior surface of the cover may define a meandering trough between the sidewalls to form a predetermined coolant path relative to a location of the end windings when the cover is secured to the housing.

A cover for a housing of an electric machine is provided. The cover may include an inner sidewall and an outer sidewall. The outer sidewall may be spaced apart from the inner sidewall to define a coolant channel therebetween. The inner sidewall and outer sidewall may be defined by an interior surface of the cover such that the coolant channel receives end windings of a stator of the electric machine when the cover is secured to the housing. The interior surface of the cover may define features between the sidewalls to promote turbulence of coolant flowing through the coolant channel. The interior surface of the cover may define a meandering trough between the sidewalls to form a predetermined coolant path relative to a location of the end windings when the cover is secured to the housing.

The present disclosure is directed at a method for making an article from a curable material, such as pliable fibre-reinforced polymer. The method includes printing a dissolvable, three dimensional substructure using a substructure material; applying the curable material to the substructure; curing the curable material while it is on the substructure; and dissolving the substructure using a dissolving agent. Using a 3D printer to print the substructure allows for faster and more economical manufacture of composite articles, such as prototype parts, relative to conventional methods that utilize CNC machines.

The present disclosure is directed at a method for making an article from a curable material, such as pliable fibre-reinforced polymer. The method includes printing a dissolvable, three dimensional substructure using a substructure material; applying the curable material to the substructure; curing the curable material while it is on the substructure; and dissolving the substructure using a dissolving agent. Using a 3D printer to print the substructure allows for faster and more economical manufacture of composite articles, such as prototype parts, relative to conventional methods that utilize CNC machines.

The present invention relates to the technical field of flexible drag reduction coatings, and in particular to a method for preparing a flexible and elastic drag reduction film. The flexible and elastic drag reduction film prepared by the present invention has excellent flexibility and elasticity. The film has a groove structure on a surface, and is suitable for curved surfaces and pipe surfaces of different diameters. The film is directly used without the need for an adhesive. It is sheathed on curved structures or devices of different diameters and curvatures by virtue of its own flexibility and elasticity, reducing an error due to the film adhesion.

The present invention relates to the technical field of flexible drag reduction coatings, and in particular to a method for preparing a flexible and elastic drag reduction film. The flexible and elastic drag reduction film prepared by the present invention has excellent flexibility and elasticity. The film has a groove structure on a surface, and is suitable for curved surfaces and pipe surfaces of different diameters. The film is directly used without the need for an adhesive. It is sheathed on curved structures or devices of different diameters and curvatures by virtue of its own flexibility and elasticity, reducing an error due to the film adhesion.

Disclosed is a powder slush molding system that molds a slush skin by melting and adhering a powder resin material to an inner surface of a mold that is heated. The powder slush molding system includes a heating device, a rocking device, a cooling device, a demolding device, and a transfer device configured to transfer the mold between these devices. The cooling device includes a cooling bath and a table configured to turn upside down vertically above the cooling bath. The mold fixedly placed on an upper surface of the table faces the cooling bath side when the table is turned upside down. The table is configured to allow the mold to be placed also on a back surface of the table. The back surface faces upward when the table is turned upside down.

Disclosed is a powder slush molding system that molds a slush skin by melting and adhering a powder resin material to an inner surface of a mold that is heated. The powder slush molding system includes a heating device, a rocking device, a cooling device, a demolding device, and a transfer device configured to transfer the mold between these devices. The cooling device includes a cooling bath and a table configured to turn upside down vertically above the cooling bath. The mold fixedly placed on an upper surface of the table faces the cooling bath side when the table is turned upside down. The table is configured to allow the mold to be placed also on a back surface of the table. The back surface faces upward when the table is turned upside down.

An antenna structure can include a printed circuit board module and a mold compound disposed on a side of the printed circuit board module. A planar antenna is defined by a conformal shield layer disposed on a first surface of the mold compound such that the mold compound is disposed between the printed circuit board module and the conformal shield layer. The thickness of the mold compound layer and the shape of the conformal shield layer can be varied to optimize a performance of the antenna.