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Methods of joining polymer composites

A technology of layer materials and bonding lines, applied in the field of connection of polymer composite materials, can solve the problem of limited application of CRFTP materials

Active Publication Date: 2021-03-26
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Despite these advantages, the number of applications for CRFTP materials is limited due to the current process available for linking CRFTP materials

Method used

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  • Methods of joining polymer composites
  • Methods of joining polymer composites
  • Methods of joining polymer composites

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Embodiment Construction

[0015] One process for joining CRFTP materials has a fastening process such as flow screw insertion. In this process, flow screws are inserted into multiple layers of material (or workpiece) to join the layers together. Material layers may include, but are not limited to, all combinations of polymer composites, polymers, polymer composite metals. Flow screws include a head and a headless end or tail to pierce through material. As the flow screw is inserted down into the layers, the headless end pierces through the top layer and then into the bottom layer. In general, however, this type of mechanical fastening of layers of CRFTP material has a low joint strength in addition to the fact that the fastened joint is susceptible to weakening due to galvanic corrosion over time.

[0016] Processes for joining first and second ply materials, particularly CRFTP materials, according to aspects of the exemplary embodiments address these issues by using flow screws and molded inserts de...

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Abstract

A method of joining first and second layers of polymer composite material includes: placing a portion of a molded insert having a bottom end into a top surface of a first layer of material, and then applying an adhesive layer to the second layer Between the top surface of one layer of material and the bottom surface of a second layer of material to create a bond line thickness. Next, the top surface of the second layer is pierced with the headless end of the fastener and interlocked into the molded insert. A protective coating is then applied to the top surface of the second layer of material to cover the interlocking fasteners.

Description

technical field [0001] The present invention relates to methods of joining polymer composites, as well as other materials, using flow screws or other suitable fasteners. Background technique [0002] The information provided in this paragraph is for the purpose of generally presenting the context of the invention. [0003] Carbon fiber reinforced thermoplastics (CFRTP), such as carbon fiber reinforced nylon composites, have a high strength-to-weight ratio and high corrosion resistance, making these materials ideal for use in automotive applications. For example, to reduce vehicle weight, these materials have been used in components such as intake manifolds, air filter housings, resonators, timing gears, radiator fans, truck beds, and radiator tanks. Despite these advantages, the number of applications for CRFTP materials is limited due to the current processes available for joining CRFTP materials. Therefore, there is a need for an improved process for linking CRFTP materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B35/00F16B25/00
CPCF16B25/001F16B35/00B29C65/483B29C65/564B29C65/72B29C66/1122B29C66/21B29C66/41B29C66/71B29C66/7212B29C66/73921B29C66/8322F16B5/02F16B11/006B29K2307/04B29K2077/00B29C65/48B29C65/561B29C66/02B29C66/30321B29C66/30325B29K2705/00B29K2907/04
Inventor S·西普里亚诺B·J·布莱斯奇R·C·詹尼斯P-C·王
Owner GM GLOBAL TECH OPERATIONS LLC