A manufacturing method for an electric motor stator includes an injecting step in which thermosetting resin is injected into a forming die, a dipping step in which a coil end portion is dipped into the thermosetting resin injected into the forming die, a heating step in which the thermosetting resin inside the forming die is heated so as to form a molded portion, and a mold release step in which the molded portion is released from the forming die when at least either shear force of the thermosetting resin or adhesive strength between the coil end portion and the thermosetting resin becomes greater than previously-determined mold release force.

A decorative panel includes a substrate and a decorative surface. The substrate includes a copolymer of an unsaturated polyester.

Provided is a method of manufacturing a carbon fiber sheet molding compound, the method including: performing sizing treatment on a carbon fiber using a sizing agent; cutting the sizing-treated carbon fiber into pieces; spraying the pieces of carbon fiber onto a first resin coated on a surface of a first carrier sheet; and uniting together a second resin coated on a second carrier sheet and a surface of the first resin, wherein the sizing agent, the first resin, and the second resin include the same compounds.

The present application discloses a manufacturing method of a color decorative plate. Firstly, decorative fiber cloth is immersed and surfacing material is prepared, including steps of: adding various auxiliaries to unsaturated polyester resin; uniformly mixing to form resin paste, wherein the auxiliaries contain an initiator, a mold release agent, an accelerator, a coupling agent, a crosslinking monomer and styrene; uniformly coating the resin paste on the decorative fiber cloth; precuring and drying at 105 C.-130 C. to produce the surfacing material; and compression moulding; feeding a SMC into a mould; and laying the surfacing material on the SMC in the mould for integral compression molding. In the compression molding process, a mold cavity is at an upper part and a mold core is at a lower part. The SMC is used as a structural layer, and the surfacing material is attached to a surface of the structural layer.

A fiber reinforced composite material structure comprises a thin sheet that includes a first surface and a plurality of convex portions which protrude and are regularly arranged on the first surface and each of which includes a top face; and a surface material that includes a second surface and is bonded to the top faces on the second surface.

A fiber reinforced composite material structure comprises a thin sheet that includes a first surface and a plurality of convex portions which protrude and are regularly arranged on the first surface and each of which includes a top face; and a surface material that includes a second surface and is bonded to the top faces on the second surface.

A method for preparing a pre-bond surface of a composite structure includes the steps of: (1) separating a peel ply, co-cured with a composite substrate, from the composite substrate; and (2) transferring an identifiable marking agent from the peel ply to the composite substrate upon separation of the peel ply from the composite substrate. Residue of the peel ply, transferred from the peel ply to the composite substrate upon separation of the peel ply from the composite substrate, is layered on the identifiable marking agent.

A method for preparing a pre-bond surface of a composite structure includes the steps of: (1) separating a peel ply, co-cured with a composite substrate, from the composite substrate; and (2) transferring an identifiable marking agent from the peel ply to the composite substrate upon separation of the peel ply from the composite substrate. Residue of the peel ply, transferred from the peel ply to the composite substrate upon separation of the peel ply from the composite substrate, is layered on the identifiable marking agent.

A pre-buried casing tube uses glass fiber reinforced resin as the raw material to enhance the operation strength of the pre-buried casing tube, extend the service life of the pre-buried casing tube, and reduce maintenance cost of the railway transport system. The pre-buried casing tube includes at least one casing tube body, each casing tube body including at least one retaining element, the retaining elements provided in intervals along one side of the casing tube, each casing tube body disposed adjacently so as to form a passage for a screw, each retaining element provided in the passage for the screw.

A pre-buried casing tube uses glass fiber reinforced resin as the raw material to enhance the operation strength of the pre-buried casing tube, extend the service life of the pre-buried casing tube, and reduce maintenance cost of the railway transport system. The pre-buried casing tube includes at least one casing tube body, each casing tube body including at least one retaining element, the retaining elements provided in intervals along one side of the casing tube, each casing tube body disposed adjacently so as to form a passage for a screw, each retaining element provided in the passage for the screw.