CN-121973478-A - Carbon fiber reinforced thermoplastic polymer continuous interlayer modification device for automatic fiber placement

CN121973478ACN 121973478 ACN121973478 ACN 121973478ACN-121973478-A

Abstract

A carbon fiber reinforced thermoplastic polymer serialization interlaminar modification device for automatic fiber placement belongs to automatic fiber placement technical field, including prepreg tape conveying mechanism, locate the frame of conveying mechanism one side, the frame on arrange heating element, carbon nanotube gaseous phase dispersion fog preparation unit, hot air-blower, cold wind unit in proper order along prepreg tape moving direction, heating element be used for making prepreg tape surface heat softening become slightly viscous flow state, carbon nanotube gaseous phase dispersion fog of carbon nanotube gaseous phase dispersion fog preparation unit preparation be pressed into prepreg tape surface's softening layer through the wind pressure of hot air-blower, cold wind unit be used for making nanoparticle firmly lock prepreg tape surface through blowing cold wind to prepreg tape surface, accomplish the surface enhancement modification of prepreg tape. The invention realizes on-line continuous, efficient and stable interlayer modification of the carbon fiber reinforced thermoplastic polymer and promotes the large-scale application of the carbon fiber reinforced thermoplastic polymer in the high-end field.

Inventors

HE YAN
ZHANG DA
LIU XINGWANG
ZHANG LEI
LI ZHAOYING
ZHANG CHUNXIAO

Assignees

青岛大学

Dates

Publication Date: 20260505
Application Date: 20260330

Claims (6)

1. A carbon fiber reinforced thermoplastic polymer serialization interlaminar modification unit for automatic fiber placement, characterized by, including carbon fiber reinforced thermoplastic polymer prepreg tape conveying mechanism, locate the frame of conveying mechanism one side, the frame on arrange heating element, carbon nanotube gaseous phase dispersion fog preparation unit, hot air-blower, cold wind unit in proper order along prepreg tape moving direction, heating element be used for making prepreg tape surface heat softening become the slightly viscous state, carbon nanotube gaseous phase dispersion fog of carbon nanotube gaseous phase dispersion fog preparation unit preparation be pressed into prepreg tape surface's softening layer through the wind pressure of hot air-blower, cold wind unit be used for through blowing cold wind to prepreg tape surface make with the nanoparticle firmly lock at prepreg tape surface, accomplish the surface enhancement modification of prepreg tape.
2. The continuous interlaminar modification device for carbon fiber reinforced thermoplastic polymers for automatic fiber placement according to claim 1, wherein the conveying mechanism comprises a material tray, a feeding tension wheel, a guiding roller, a discharging tension wheel and a pressing roller, wherein the material tray is used for winding prepreg tape raw materials, the prepreg tape sequentially bypasses the feeding tension wheel, the 2 guiding rollers and the discharging tension wheel and is in transmission connection with the pressing roller, and the surface to be modified of the prepreg tape between the 2 guiding rollers faces one side of the frame.
3. The continuous interlaminar modification device for carbon fiber reinforced thermoplastic polymers for automatic fiber placement according to claim 2, wherein the heating unit comprises an infrared heater, a temperature sensor and a temperature control unit, wherein the infrared heater is respectively connected with the frame, 1 or more infrared heaters are arranged for uniformly heating the surface to be modified, the temperature sensor is a non-contact temperature sensor and is used for detecting the temperature of the surface to be modified, the temperature sensor is in signal connection with the temperature control unit through a wire, and the temperature control unit is configured for controlling the power of the infrared heater.
4. The continuous interlayer modification device for carbon fiber reinforced thermoplastic polymers for automatic fiber placement according to claim 3, wherein the carbon nanotube gas-phase dispersion fog preparation unit comprises an anode electrode, a cathode electrode and a plasma generator, wherein the anode electrode and the cathode electrode are respectively and electrically connected with the plasma generator, the cathode electrode is formed by mixing and pressing nano materials and deionized water, the anode electrode is made of high-melting-point conductive metal, the cathode electrode and the anode electrode are oppositely arranged, a gap through which hot air passes is formed between the anode electrode and the cathode electrode, and the gap is opposite to the surface to be modified.
5. The continuous interlaminar modification device for carbon fiber reinforced thermoplastic polymers with automatic fiber placement according to claim 4, wherein the hot air blower is arranged on the frame at one side of the gap far away from the prepreg tape, the nozzle width of the hot air blower is matched with the width of the prepreg tape, and the carbon nano tube gas-phase dispersion mist is uniformly dispersed through the gap and is pressed into the softening layer of the surface to be modified through hot air.
6. The continuous interlaminar modification device for carbon fiber reinforced thermoplastic polymers with automatic fiber placement according to claim 5, wherein the cold air unit is an air cooler arranged on the frame, and the air cooler cools the softening layer by blowing cold air and solidifies the modified surface.

Description

Carbon fiber reinforced thermoplastic polymer continuous interlayer modification device for automatic fiber placement Technical Field The invention belongs to the technical field of automatic fiber placement, and particularly relates to a carbon fiber reinforced thermoplastic polymer continuous interlayer modification device for automatic fiber placement. Background The disclosure of this background section is only intended to increase some understanding of the general background of the disclosure and is not necessarily to be taken as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. The automatic fiber placement technology has become a core process for molding large complex thermoplastic composite material components in the field of aerospace and high-end equipment manufacturing by virtue of the characteristics of high precision and high flexibility. The carbon fiber reinforced thermoplastic polymer composite material is widely applied to high-bearing key parts due to high specific strength, high specific modulus and excellent environmental stability, and is a key material system for promoting the lightweight development of high-end manufacturing. However, the material faces a core technical bottleneck in laying molding, namely the surface of the carbon fiber reinforced thermoplastic polymer matrix is inert, the interface has only weak physical action, and the material lacks of chemical bonding and mechanical interlocking structures, so that the interlayer bonding strength is insufficient, and the integral mechanical property of the component is severely restricted. Meanwhile, the conventional nano modification is easy to cause the problems of particle agglomeration, uneven dispersion, difficult embedding and the like, and the stability of the modification effect is poor. The traditional modification process is mostly off-line treatment, is incompatible with an on-line high-speed production flow of automatic fiber placement, increases the process cost, cannot be matched with a dynamic thermal process window, is easy to cause resin degradation or crystallization abnormality due to temperature fluctuation, further worsens the interface modification effect, and influences the molding quality. The existing automatic fiber placement equipment has single function, only focuses on track planning, basic heating and compaction, does not integrate an online continuous interlayer modification module, cannot realize interface in-situ activation, uniform modification and parameter precise regulation, causes failure such as layering, cracking and the like of components, and severely limits the engineering application range of the equipment. Therefore, it is needed to invent a continuous interlayer modification device for carbon fiber reinforced thermoplastic polymers for automatic fiber placement, so as to solve the problems that the conventional nano modification is easy to cause particle agglomeration, uneven dispersion and difficult to embed, the existing modification process device is incompatible with the online high-speed production flow of automatic fiber placement, and the like, realize online continuous, efficient and stable interlayer modification of the carbon fiber reinforced thermoplastic polymers, and promote the large-scale application of the carbon fiber reinforced thermoplastic polymers in the high-end field. Disclosure of Invention The invention discloses a continuous interlayer modification device for a carbon fiber reinforced thermoplastic polymer for automatic fiber laying, and aims to solve the problems that the conventional nano modification provided in the background art is easy to cause particle agglomeration, uneven dispersion and difficult to embed, and the existing modification process device is incompatible with an online high-speed production flow for automatic fiber laying. In order to achieve the above purpose, the technical scheme of the invention is as follows: The utility model provides a carbon fiber reinforced thermoplastic polymer serialization interlaminar modification device for automatic fiber placement, includes carbon fiber reinforced thermoplastic polymer prepreg tape conveying mechanism, locates the frame of conveying mechanism one side, the frame on arrange heating element, carbon nanotube gaseous phase dispersion fog preparation unit, hot air-blower, cold wind unit in proper order along prepreg tape moving direction, heating element be used for making prepreg tape surface heat softening become slightly viscous flow state, carbon nanotube gaseous phase dispersion fog of carbon nanotube gaseous phase dispersion fog preparation unit preparation be pressed into prepreg tape surface's softening layer through the wind pressure of hot air-blower, cold wind unit be used for making nanoparticle firmly lock prepreg tape surface through blowing cold wind to prepreg tape surface, accomplish the surfa