CN-224210617-U - PET composite special-shaped piece

Abstract

The utility model discloses a PET composite special-shaped part and an autoclave forming and curing device thereof, and belongs to the technical field of composite material thermoforming. The PET composite special-shaped piece comprises an integrally formed L-shaped first bending part, a transverse part and an L-shaped second bending part, PET+CFRT prepreg is rotated by a first feeding roller pair and a second feeding roller pair and then enters a forming lower die and a forming upper die, then the forming lower die, the forming upper die, the first feeding roller pair and the second feeding roller pair are sealed after being packaged by a vacuum bag, and then an autoclave forming curing device is integrally pushed into an autoclave for heating, pressurizing and curing, so that the PET composite special-shaped piece is obtained, the technical requirements of the good functional application of the PET composite special-shaped piece which is light in weight, high in specific strength, high in wear resistance, fatigue resistance and good in forming technology for replacing the existing adapting connecting piece made of pure metal are integrally solved, and the weight reduction, high specific strength, high wear resistance and fatigue resistance of the whole application scene are realized.

Inventors

• YANG YUXIAO
• CHEN JIANJUN
• KANG GUOPEI
• ZHOU MINGJI
• BAI ZHIFEI
• SHEN YUJIE

Assignees

• 南京化纤股份有限公司

Dates

Publication Date

20260508

Application Date

20250213

Claims (4)

1. The utility model provides a PET composite special-shaped piece, its characterized in that, PET composite special-shaped piece (1) include integrated into one piece's first bending portion (11), horizontal portion (12), second bending portion (13), the one end of first bending portion (11) with the one end of horizontal portion (12) is connected, the other end of horizontal portion (12) with the one end of second bending portion (13) is connected, PET composite special-shaped piece's autoclave shaping solidification equipment includes shaping lower mould (2), shaping upper mould (3), vacuum bag (8) that encapsulation was used, shaping lower mould (2) cooperation set up in shaping upper mould (3) below, PET composite special-shaped piece (1) set up in shaping lower mould (2) with in the cavity between shaping upper mould (3), shaping lower mould (2) with the front end of shaping upper mould (3) is provided with first feed roller pair (6), shaping lower mould (2) with the rear end of shaping upper mould (3) is provided with second feed roller pair (7), second feed roller pair (7) will be advanced in shaping upper mould (3) vacuum bag (7).
2. 2. PET composite profile according to claim 1, characterized in that the first fold (11) and the second fold (13) are both L-shaped.
3. 3. The PET composite profile according to claim 1, wherein the PET composite profile (1) is a pet+cfrt prepreg formed by uniformly impregnating a molten PET foaming resin with CFRT continuous reinforcing fibers in a continuous production mode.
4. 4. The PET composite special-shaped piece according to claim 1, wherein a first supporting frame (4) and a second supporting frame (5) which are distributed in bilateral symmetry are arranged below the molding lower die (2).

Description

PET composite special-shaped piece Technical Field The utility model relates to a PET composite special-shaped piece and an autoclave forming and curing device thereof, belonging to the technical field of composite material thermoforming. Background The main component of the PET foam is polyethylene terephthalate (Polyethylene terephthalate), commonly known as polyester resin. Polyethylene terephthalate (polyester resin) is mainly used for manufacturing synthetic fibers, films and bottles, and has application in engineering plastics and other fields. When foaming is adopted for forming the PET foam material, the PET foam material is relatively brittle, but has good heat resistance and mechanical strength. The PET foam can be recycled, so that the PET foam has good environmental protection performance. CFRT, i.e., continuous fiber reinforced thermoplastic composites, is widely used by many industries due to its high strength, low density characteristics. The advanced PET composite material has the advantages of light weight, high specific strength, high wear resistance, fatigue resistance, good forming process and the like, is widely applied to the fields of ships, rail vehicles, new energy automobiles and the like, and particularly in the field of ships, the composite material can be used in a large amount, so that the weight of the ships can be reduced, the oil consumption can be reduced, the navigational speed can be improved, the maintenance cost can be reduced, and the service period of the ships can be prolonged. Therefore, it is necessary to design a PET composite special-shaped piece with light weight, high specific strength, high wear resistance, fatigue resistance and good forming process to replace the existing adapting connecting piece made of pure metal materials, so as to realize the good functional application of the whole application scene with light weight, high specific strength, high wear resistance and fatigue resistance. Disclosure of utility model The utility model aims to overcome the technical defects in the prior art, solve the technical problems, and provide a PET composite special-shaped piece and an autoclave forming and curing device thereof. The PET composite special-shaped piece comprises a first bending part, a transverse part and a second bending part which are integrally formed, wherein one end of the first bending part is connected with one end of the transverse part, and the other end of the transverse part is connected with one end of the second bending part. As a preferred embodiment, the first bending part and the second bending part are L-shaped. As a preferred embodiment, the PET composite special-shaped piece is made of PET+CFRT prepreg formed by uniformly impregnating CFRT continuous reinforced fibers with molten PET foaming resin in a continuous production mode. The utility model also provides an autoclave molding and curing device for the PET composite special-shaped piece, which comprises a molding lower die, a molding upper die and a vacuum bag for encapsulation, wherein the molding lower die is arranged below the molding upper die in a matched manner, the PET composite special-shaped piece is arranged in a cavity between the molding lower die and the molding upper die, the front ends of the molding lower die and the molding upper die are provided with a first feeding roller pair, the rear ends of the molding lower die and the molding upper die are provided with a second feeding roller pair, and the vacuum bag encapsulates the molding lower die, the molding upper die, the first feeding roller pair and the second feeding roller pair and then seals. As a preferred embodiment, a first supporting frame and a second supporting frame which are distributed in a bilateral symmetry manner are arranged below the molding lower die. As a preferred embodiment, the PET+CFRT prepreg is rotated by a first feeding roller pair and a second feeding roller pair, then enters a molding lower die and a molding upper die, then is packaged by a vacuum bag, and then is sealed, and then the whole autoclave molding curing device is pushed into an autoclave for heating, pressurizing and curing, so that the PET composite special-shaped piece is obtained. The utility model has the beneficial effects that: aiming at solving the technical requirements of designing a PET composite special-shaped part which is light in weight, high in specific strength, high in wear resistance, fatigue-resistant and good in molding process to replace the existing adapting connecting piece made of pure metal, realizing the whole weight reduction, high in specific strength, high in wear resistance and fatigue-resistant in application scene and good in functional application, the utility model provides a PET composite special-shaped part and an autoclave molding curing device thereof, wherein the PET composite special-shaped part comprises an integrally molded L-shaped first bending part, a transverse part and an L-