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A three-dimensional braided composite material propeller blade for ships and its preparation method

A three-dimensional weaving, composite material technology, applied in the direction of rotating propellers, rotary propellers, etc., can solve problems such as poor bonding strength, and achieve the effect of improving strength and stiffness, high material uniformity and dimensional precision, and high production efficiency

Active Publication Date: 2017-09-26
山东宽原新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a three-dimensional braided composite material propeller blade for ships and its preparation method. Through the proportion matching of various fibers, the mechanical properties of the propeller blade at specific parts can be improved, and the interlayer bonding of traditional composite material blades can be eliminated. The problem of poor strength, continuous three-dimensional weaving technology improves the production efficiency of propeller composite propeller blades

Method used

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  • A three-dimensional braided composite material propeller blade for ships and its preparation method
  • A three-dimensional braided composite material propeller blade for ships and its preparation method

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Embodiment 1

[0032] figure 1 It is a structural schematic diagram of the core mold of the propeller blade of the present invention, and the core mold includes a core mold main body 1 and a structural reinforcement part 2 arranged on the core mold main body. The three-dimensional braided structure of the propeller blade of the present invention is based on figure 1 The mold structure in the weaving molding.

[0033] Such as figure 2 As shown, a propeller blade of a three-dimensional braided composite material for a ship includes an internal three-dimensional braided structure and a resin layer impregnated and cured on the three-dimensional braided structure, and the three-dimensional braided structure includes a main body of the three-dimensional braided structure Part 3, the reinforced structure part 4 of the three-dimensional braided structure, and the high-density yarn stitching structure between the main body part 3 of the three-dimensional braided structure and the reinforced struct...

Embodiment 2

[0037] based on figure 1 The core mold in the hybrid fiber three-dimensional braided preform is prepared, such as figure 2 As shown, the main part 3 of the three-dimensional braided structure uses T300 carbon fiber and Kevlar29 aramid fiber hybrid yarn for mixed weaving, and the reinforcing structure part 4 of the three-dimensional braided structure uses two hybrid combinations of Kevlar49 aramid fiber and T700 carbon fiber. . The overall three-dimensional braided propeller blade has a length of 5m and a width of 1.2m.

[0038] The hybrid fiber blade preform after three-dimensional weaving uses phenolic resin glue as the base material, and the VARI vacuum introduction process is used to fully impregnate the above blade preform with the glue, and the vacuum degree of the entire impregnation and compounding process is kept at 0.1MPa. The resin-impregnated blades were cured at 120°C for 4 hours and then molded, with the glue content kept at 40%.

Embodiment 3

[0040] based on figure 1 The core mold in the hybrid fiber three-dimensional braided preform is prepared, such as figure 2 As shown, the main part 3 of the three-dimensional braided structure uses T700 carbon fiber and Kevlar49 aramid fiber hybrid yarn for mixed weaving, and the reinforcing structure part 4 of the three-dimensional braided structure can choose Kevlar29 aramid fiber and T800 carbon fiber. combination. The length of the propeller blade after overall three-dimensional weaving is 4m and the width is 0.8m.

[0041]The hybrid fiber blade prefabricated body after three-dimensional weaving uses epoxy resin glue as the matrix raw material, and uses the VARI vacuum introduction process to fully impregnate the above blade prefabricated body with the glue, and the vacuum degree of the entire impregnation composite process is kept at 0.06MPa. The resin-impregnated blades were cured at 90°C for 2.5 hours and then molded, with the glue content kept at 35%.

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Abstract

The invention discloses a three-dimensional braided composite material propeller blade for a ship and a preparation method thereof. The design of a mandrel for prefabricated body support is carried out according to the power requirements of the ship, including the determination of the main structure of the blade and the structure of a specific strengthening part; according to the structure of the mandrel and the Strengthen the design requirements, determine the types of high-performance fibers and the key characteristics of hybrid fiber yarns, and prepare hybrid fiber yarns; use hybrid fiber yarns and use three-dimensional braiding technology to continuously weave hybrid fiber preforms for propeller blades Molding: Using thermosetting resin glue as the matrix, adopting vacuum introduction technology and heat curing process, resin impregnation and vacuum curing are carried out on the hybrid fiber blade prefabricated body to obtain three-dimensional braided propeller blades for ships. The application of a variety of three-dimensional braided structures and the combination of vacuum introduction and heat curing has strengthened the strength of the propeller blades and effectively improved the production efficiency of the blades.

Description

technical field [0001] The invention specifically relates to a three-dimensional braided composite material propeller blade for ships and a preparation method thereof. Background technique [0002] Propellers are key power mechanical components on military or civilian ships. The processing cost of traditional metal propellers is high, and the propeller materials of metal alloys are susceptible to corrosion, cavitation damage and fatigue damage, etc., because composite propellers have many advantages such as light weight, high rigidity, high strength and strong resistance to seawater corrosion, Therefore, more and more people pay attention to it. Among them, the blade part is the main component that determines the dynamic stability of the entire propeller. In order to improve the overall maneuverability of the ship, many countries have been developing propeller blades made of new composite materials for more than ten years, especially for the structural strength of composite...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H1/26B29C70/48B29C70/54
Inventor 朱波王宝刚曹伟伟乔琨
Owner 山东宽原新材料科技有限公司
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