Abstract: A method of manufacturing a refined pitch includes the steps of providing a pitch and performing a heated blending process thereon to produce a pitch solution; adding an aromatic additive to the pitch solution; adding an aliphatic additive to the pitch solution; performing a quiescent sedimentation process on the pitch solution; and separating a liquid part from the pitch solution. Therefore, the method allows a concentrated mesophase pitch to be manufactured quickly and by heat processing.

Abstract: A method of manufacturing of a polymer composite includes the steps of (1) putting a nanofiller and a polymer material in a high-pressure device and eliminating air therefrom; (2) providing a gas in the high-pressure device and performing a heating and blending process on the nanofiller and the polymer material at a first pressure and a first temperature; (3) changing the pressure and temperature of the high-pressure device to a second pressure and a second temperature to thereby obtain a polymer composite; and (4) performing a degassing process on the polymer composite. Accordingly, the method is effective in manufacturing a polymer composite which includes a uniformly dispersed nanofiller.

Abstract: In a method of fabricating graphite films, mesophase pitch, a polymer material and an organic solvent are used to produce a carbon precursor slurry, and the carbon precursor slurry is coated to produce the graphite films. Since the method of using natural graphite as a raw material in production requires a number of purification processes to manufacture an expanded graphite powder before the graphite films can be produced, and thus the fabricating cost is very high, and other high-priced materials such as polyimide (PI) or graphene also will increase the total cost.

Abstract: Disclosed is a device designed for a continuous production of graphene flakes by an electrochemical method. The device consists of an electrochemical unit for generating graphene flakes by an electrochemical exfoliation; a filtration unit for separating the graphene flakes from an electrolyte solution; a guiding path connected to the electrochemical unit and transports the graphene flakes and the electrolyte solution into the filtration unit; a grading collection unit for accepting the separated graphene flakes from the filtration unit and separating the graphene flakes by size. The device can achieve the effect of producing high-quality graphene flakes in mass production electrochemically, continuously and quickly.

Abstract: In a method of fabricating graphite flakes applied in a graphite nanomaterial, mesophase pitch and an organic solvent are used to produce a carbon precursor slurry, and the carbon precursor slurry is coated by a scraper to produce the graphite flakes. Since the method of using natural graphite as a raw material in production requires a number of purification processes to manufacture an expanded graphite powder before the graphite flakes can be produced, and thus the fabricating cost is very high, and other high-priced materials such as polyimide (PI) or graphene also will increase the total cost.

Abstract: A manufacture method of a three dimensional (3D) braided composite tube with a throat section includes: providing an assembled mandrel comprising an upper mandrel and a lower mandrel, and braiding an 3D braided inner layer on the upper mandrel; winding fiber yarns to form a fiber yarn layer over the 3D braided inner layer; tightening the 3D braided inner layer to the assembled mandrel by an appropriate tension force when winding; and infiltrating resin and increasing temperature to cure the resin for obtaining a composite tube with a narrower throat section. The present invention takes advantage of winding fiber yarn outer layer to keep the radius of the throat of the 3D braided inner layer to meet design requirement. Additionally, the hoop strength of the throat section is increased so that the metal shell can be made thinner to reduce the weight of the rocket nozzle.

Abstract: Disclosed is a method of producing shaped graphene sheets, and the method includes the steps of providing an initial material of an artificial oriented graphite, performing a shaping process of the initial material of the artificial oriented graphite to produce a composite material, and carrying out an electrochemical process of the composite material to obtain the shaped graphene sheets, so as to achieve the mass production of high-quality shaped graphene sheets with a low cost.

Abstract: A manufacture method of a three dimensional (3D) braided composite tube with a throat section includes: providing an assembled mandrel comprising an upper mandrel and a lower mandrel, and braiding an 3D braided inner layer on the upper mandrel; winding fiber yarns to form a fiber yarn layer over the 3D braided inner layer; tightening the 3D braided inner layer to the assembled mandrel by an appropriate tension force when winding; and infiltrating resin and increasing temperature to cure the resin for obtaining a composite tube with a narrower throat section. The present invention takes advantage of winding fiber yarn outer layer to keep the radius of the throat of the 3D braided inner layer to meet design requirement. Additionally, the hoop strength of the throat section is increased so that the metal shell can be made thinner to reduce the weight of the rocket nozzle.

Abstract: The invention provides a semi-continuity fiber prepreg material, a manufacturing method thereof, and a composite material made of the semi-continuity fiber prepreg material. The semi-continuity fiber prepreg material includes a plurality of intermittency notches and/or continuity notches formed on a fiber prepreg material along at least one direction to make the fiber prepreg material soft and suitable for molding.

Abstract: The invention provides a semi-continuity fiber prepreg material, a manufacturing method thereof, and a composite material made of the semi-continuity fiber prepreg material. The semi-continuity fiber prepreg material includes a plurality of intermittency notches and/or continuity notches formed on a fiber prepreg material along at least one direction to make the fiber prepreg material soft and suitable for molding.

Abstract: The invention provides a semi-continuity fiber prepreg material, a manufacturing method thereof, and a composite material made of the semi-continuity fiber prepreg material. The semi-continuity fiber prepreg material includes a plurality of intermittency notches and/or continuity notches formed on a fiber prepreg material along at least one direction to make the fiber prepreg material soft and suitable for molding.

Abstract: A copy-limit pre-recorded CD (Compact Disc) and a copy-limit method protect the data recorded on the pre-recorded CD from copied onto a recordable CD. The pre-recorded CD (Compact Disc) includes a data area of the pre-recorded CD and an indivisible file. The storage capacity of a data area of the recordable CD is Z. The indivisible file is stored in the data area of the pre-recorded CD and has a file size Y which approximately ranges between Z+10 MB and Z+100 MB. The copying action is prohibited to proceed when the indivisible file with a size is larger than the storage capacity of the data area of a recordable CD is determined.

Abstract: A copy-limit pre-recorded CD (Compact Disc) and a copy-limit method protect the data recorded on the pre-recorded CD from copied onto a recordable CD. The pre-recorded CD (Compact Disc) includes a data area of the pre-recorded CD and an indivisible file. The storage capacity of a data area of the recordable CD is Z. The indivisible file is stored in the data area of the pre-recorded CD and has a file size Y which approximately ranges between Z+10 MB and Z+100 MB. The copying action is prohibited to proceed when the indivisible file with a size is larger than the storage capacity of the data area of a recordable CD is determined.