CN-121989481-A - Preparation system for continuously producing carbon nano tube reinforced resin matrix composite material

CN121989481ACN 121989481 ACN121989481 ACN 121989481ACN-121989481-A

Abstract

The invention discloses a preparation system for continuously producing a carbon nanotube reinforced resin matrix composite material, which relates to the technical field of preparation of functional composite materials, and comprises a first fluidized bed reactor and a second fluidized bed reactor which are mutually connected in series through an air path, wherein the bottom of the second fluidized bed is connected with a carbon nanotube conveying pipe communicated with the first fluidized bed, the bottom of the first fluidized bed is connected with a carbon nanotube discharging pipe, the carbon nanotube discharging pipe is connected with a mixer, a plurality of feeding pipelines are connected on the mixer, a porous distribution plate is connected inside the mixer, a rotary feeder is connected at a discharge hole at the bottom of the mixer, the rotary feeder is connected with a venturi tube, and the venturi tube is connected with a shearing structure; the shearing structure is connected with the melting structure, the melting structure is connected with the air pressure former, and the rear end of the air pressure former is connected with the nitrogen cooler. The system solves the technical problems of reinforcing phase nanoscale dispersion and material densification, improves the production efficiency and the product quality stability of the carbon nanotube reinforced resin matrix composite material, and reduces the production cost.

Inventors

LIU HONG
LIU WEIWEI
DENG PING
LUO YI
ZHENG LANJIANG
LI YING
YANG HENG
Jiang e
WANG JIAZHEN

Assignees

中国核动力研究设计院

Dates

Publication Date: 20260508
Application Date: 20260403

Claims (10)

1. The preparation system for continuously producing the carbon nanotube reinforced resin matrix composite is characterized by comprising a first fluidized bed reactor (03) and a second fluidized bed reactor (17) which are mutually connected in series through a gas path, wherein the bottom of the second fluidized bed reactor (17) is connected with a carbon nanotube conveying pipe (39) communicated with the first fluidized bed reactor (03), the bottom of the first fluidized bed reactor (03) is connected with a carbon nanotube discharging pipe (38), the carbon nanotube discharging pipe (38) is connected with a mixer (37), a plurality of feeding pipelines are connected to the mixer (37), a porous distribution plate (22) is connected to the interior of the mixer (37), a rotary feeder (33) is connected to the discharge port of the bottom of the mixer (37), the rotary feeder (33) is connected with a venturi (34), the venturi (34) is connected with a shearing structure, the shearing structure is connected with a melting structure, the melting structure is connected with an air pressure former (35), and the rear end of the air pressure former (35) is connected with a nitrogen cooler (36).
2. The system for continuously producing the carbon nanotube reinforced resin matrix composite according to claim 1, wherein the shearing structure comprises a first shearing device (24), the first shearing device (24) is connected with a jet device (25), the jet device (25) is connected with a second shearing device (27), and the second shearing device (27) is connected with the melting structure.
3. The preparation system for continuously producing the carbon nanotube reinforced resin matrix composite material according to claim 1, wherein the melting structure comprises a primary melter (28) and a secondary melter (29) which are mutually connected in series, the primary melter (28) and the secondary melter (29) are connected with a heat source supplementing structure, and a material conveying pipeline connected with the shearing structure is connected with a material heating structure (02) to be melted.
4. A system for continuously producing a carbon nanotube reinforced resin matrix composite according to claim 3, wherein the heat source supplementing structure comprises a hot air pipe (32) connected with the primary melter (28) and the secondary melter (29), the hot air pipe (32) is connected with a fan (31), and the hot air pipe (32) is connected with an air heating structure (02).
5. The preparation system for continuously producing the carbon nanotube reinforced resin matrix composite material according to claim 1 is characterized in that the tops of the first fluidized bed reactor (03) and the second fluidized bed reactor (17) are respectively connected with a product separation structure, an air outlet pipe of the product separation structure is connected with a catalyst inlet of the second fluidized bed reactor (17), a first ejector (18) is connected to the air outlet pipe, the first ejector (18) is connected with a power pipe (20), a power pump (19) is connected to the power pipe (20), the power pipe (20) is connected with a carbon source air inlet pipe (21) of the first fluidized bed reactor (03), and a hydrogen air inlet pipe (01) is connected to the bottom of the first fluidized bed reactor (03).
6. The preparation system for continuously producing the carbon nanotube reinforced resin matrix composite material according to claim 1, wherein a fixed reactor (05) is arranged in each of the first fluidized bed reactor (03) and the second fluidized bed reactor (17), a porous gas distribution plate (04) is arranged in the fixed reactor (05), and a flow guide baffle (06) is connected to the top of the fixed reactor (05).
7. The system for continuously producing carbon nanotube reinforced resin matrix composite according to claim 5, wherein an exhaust pipe is connected to an outlet end of the product separation structure on the second fluidized bed reactor (17), and the exhaust pipe is connected to a catalyst recovery device and a hydrogen recovery device.
8. The preparation system for continuously producing the carbon nanotube reinforced resin matrix composite material according to claim 7, wherein the catalyst recycling device comprises a second cyclone separator (10), the top air outlet end of the second cyclone separator (10) is connected with the hydrogen recycling device, the bottom is connected with a catalyst recycling pipeline (09), and the catalyst recycling pipeline (09) is connected with two catalyst recycling branch pipes respectively connected with the first fluidized bed reactor (03) and the second fluidized bed reactor (17) through a three-way joint.
9. The system for continuously producing carbon nanotube reinforced resin matrix composite material according to claim 7, wherein the hydrogen recovery device comprises a second ejector (16), the second ejector (16) is connected with a membrane separation unit, and the membrane separation unit is connected with a pressure swing adsorption system (12).
10. The preparation system for continuously producing the carbon nanotube reinforced resin matrix composite material according to claim 9, wherein a first hydrogen recycling pipe (08) connected with a hydrogen inlet pipe (01) of the first fluidized bed reactor (03) is connected to the top of the pressure swing adsorption system (12), and a second hydrogen recycling pipe (15) connected with a hydrogen inlet pipe (01) of the second fluidized bed reactor (17) is connected to the bottom of the pressure swing adsorption system (12) and the bottom of the membrane separation unit.

Description

Preparation system for continuously producing carbon nano tube reinforced resin matrix composite material Technical Field The invention relates to the technical field of preparation of functional composite materials, in particular to a preparation system for continuously producing a carbon nano tube reinforced resin matrix composite material. Background The technology for continuously producing the resin-based composite material is widely applied to the fields of electronic packaging, automobile manufacturing, consumer electronics and the like, the usage amount of the electric conduction and heat conduction plastic in electronic components is increased by more than 25%, but the performance stability and the production efficiency of the existing material are needed to be improved. In order to realize large-scale automatic production and improve the consistency of products, intensive research on continuous preparation technology is important for transformation and upgrading of plastic industry in China. In recent years, the technological development and industrial application of continuous production of functionalized resin matrix composites continue to increase in temperature. As an advanced automatic production process, the continuous production of the resin-based composite material has obvious advantages for production requirements of high efficiency and high quality. The traditional resin-based composite material production mainly comprises three working sections, namely raw material pretreatment, melt blending and product molding. Although the continuous production technology has wide development prospect, the method still has restriction factors in engineering application, the material transportation and process control in the traditional production mode are limited, and the whole process is difficult to realize accurate regulation and control. In addition, on-line monitoring and quality control are technical difficulties. The optimization production line design and control system can realize accurate adjustment of technological parameters, and is favorable for ensuring the quality stability of products. At present, in industrial application, a production line mostly adopts a sectional control mode, the mode limits the improvement of the overall efficiency, the production process depends on independent adjustment of each unit, the cooperative control of the whole process is difficult, the process adjustment flexibility is insufficient, and the flexible production of multiple varieties is not facilitated. The parameters of each working section in the traditional production mode are mutually influenced, the coupling degree of the quality control link is high, the product specification adjustment period is longer, and the application benefit of the technology in the multi-variety and small-batch production scene is restricted. In prior studies, zhang et al (Composites SCIENCE AND Technology, 2022, 218:109-118) developed a fluidized bed-based carbon nanotube/polymer composite preparation method that achieved dispersion of the reinforcement phase with the aid of an air stream. However, the method has the problems of unstable material transportation, easy agglomeration of carbon nanotubes and the like in continuous production, and influences the performance consistency of products. Therefore, the existing resin-based composite material still has the problems that carbon nanotubes are easy to agglomerate and difficult to realize nano-scale dispersion in the production process, and meanwhile, the material densification and functionalization synchronous control capability is insufficient, so that the product consistency and the production efficiency are affected. Disclosure of Invention Based on the problems that carbon nanotubes are easy to agglomerate and difficult to realize nano-scale dispersion in the production process of the existing resin-based composite material, the invention aims to provide a preparation system for continuously producing the carbon nanotube reinforced resin-based composite material, which realizes the efficient conversion from carbon dioxide to carbon nanotubes through a two-stage fluidized bed reactor, realizes the precise proportioning and efficient conveying of each component through a composite reactor and a venturi pipe conveying structure, solves the technical problems of reinforced phase nano-scale dispersion and material densification through a two-stage melt blending and gas auxiliary forming process, and remarkably improves the production efficiency and the product quality stability through a full-flow control system. The invention is realized by the following technical scheme: The application provides a preparation system for continuously producing a carbon nanotube reinforced resin matrix composite material, which comprises a first fluidized bed reactor and a second fluidized bed reactor which are mutually connected in series through an air path, wherein the bottom of the