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Thermoplastic composite material bolt and preparation method and application thereof

A composite material, thermoplastic technology, applied in the field of rod bolts, to achieve the effect of easy promotion, excellent mechanical properties, and improved axial and radial rigidity and strength

Pending Publication Date: 2021-02-19
山东中航和辉复合材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the inventor found that the performance of the existing threaded rod-shaped structure still needs to be improved to meet the requirements of mechanical assembly and connection in special fields

Method used

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  • Thermoplastic composite material bolt and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A thermoplastic composite bolt specifically includes two parts: a thermoplastic hybrid fiber reinforced core 1 and a surface thermoplastic hybrid fiber wound thread layer 2 . Among them, the thermoplastic hybrid fiber reinforced core 1 is reinforced by mixing M40 carbon fiber and aramid K129 fiber at a ratio of 4:1, and is composited with a polyethylene matrix with a resin content of 60%. The hybrid fiber is arranged in one direction by pultrusion. Extrusion process compound infiltration thermoplastic matrix to form a reinforced core 1 with a diameter of 6 mm. On the surface of the hybrid fiber reinforced core 1, T300 carbon fiber and aramid K29 ​​fiber are mixed with a mixing ratio of 5:1, and the surface thread reinforcement layer 2 is prepared by a hoop winding method with a winding angle of 85°. After winding the fibers of the reinforced thread layer 2, the fibers of the thread layer are impregnated with polyethylene resin with a resin content of 50% at a temperatur...

Embodiment 2

[0033] A thermoplastic composite bolt specifically includes two parts: a thermoplastic hybrid fiber reinforced core 1 and a surface thermoplastic hybrid fiber wound thread layer 2 . Among them, the thermoplastic hybrid fiber reinforced core 1 is reinforced by mixing M60 carbon fiber and aramid K29 ​​fiber at a ratio of 2:1, and is composited with a polypropylene matrix with a resin content of 65%. The hybrid fiber is unidirectionally arranged by pultrusion. Extrusion process compound infiltration thermoplastic matrix to form a reinforced core with a diameter of 4mm. T700 carbon fiber and UHMWPE fiber were mixed on the surface of the hybrid fiber reinforced core with a mixing ratio of 5:3, and the surface thread reinforcement layer 2 was prepared in a spiral winding manner with a winding angle of 45°. After winding the fibers of the reinforced thread layer 2, the fibers of the thread layer are impregnated with polyethylene resin with a resin content of 55% at a temperature of 2...

Embodiment 3

[0035] A thermoplastic composite bolt specifically includes two parts: a thermoplastic hybrid fiber reinforced core 1 and a surface thermoplastic hybrid fiber wound thread layer 2 . Among them, the thermoplastic hybrid fiber reinforced core 1 is reinforced by mixing M55 carbon fiber and aramid K129 fiber at a ratio of 2:1, and is compounded with an ethylene terephthalate matrix with a resin content of 50%, and the hybrid fiber is pultruded. Arranged vertically, the reinforced core 1 with a diameter of 2 mm is formed by compositely infiltrating a thermoplastic matrix by a pultrusion process. The surface of the hybrid fiber reinforced core 1 is mixed with T800 carbon fiber and PBO fiber with a mixing ratio of 3:1, and the surface thread reinforcement layer 2 is prepared by a hoop winding method with a winding angle of 88°. After winding the fibers of the reinforced thread layer 2, the fibers of the thread layer are impregnated with polyethylene resin with a resin content of 65% ...

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Abstract

The invention discloses a thermoplastic composite material bolt and a preparation method and application thereof, which belongs to the field of materials. The thermoplastic composite material bolt structurally comprises the following parts of a thermoplastic hybrid fiber reinforced core and a surface thermoplastic hybrid fiber winding thread layer. Wherein the thermoplastic hybrid fiber reinforcedcore takes high-modulus carbon fibers as a main body and takes hybrid high-strength carbon fibers and high-toughness fibers as hybrid fibers, and the core material is formed by infiltrating thermoplastic resin among unidirectional continuous fibers in a heating manner by adopting a pultrusion process in a hot melting manner; a surface reinforced layer is prepared on the surface of the composite reinforced core through a winding process; and the spiral surface reinforced layer can be suitable for secondary mold pressing plasticizing machining of surface threads of bolts.

Description

technical field [0001] The invention belongs to a thermoplastic composite mechanical part, in particular to a thermoplastic composite rod-shaped bolt. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the gradual emergence of many problems in the preparation and application of thermosetting composite materials, the secondary recycling of thermosetting composite materials has become the main technical problem to solve the continuous and long-term use of composite materials. Due to the characteristics of chemical processing, it has become the main characteristic product replacing thermosetting composite materials. At present, rods or bars of fiber-reinforced composite m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/52B29C70/34F16B35/00B29L1/00
CPCB29C70/34B29C70/52B29L2001/002F16B35/00
Inventor 朱波徐长水
Owner 山东中航和辉复合材料有限公司
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