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Method for producing assorted fiber composite mast

A technology of composite materials and mixed fibers, which is applied in the field of mast manufacturing, can solve the problems of low strength, poor stability, and high quality of metal masts, and achieve the effect of improving strength and increasing stability

Inactive Publication Date: 2009-08-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing metal mast has high mass, low strength and poor stability, which limits the fast sailing of the ship, and provides a method for manufacturing a hybrid fiber composite mast

Method used

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Experimental program
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Effect test

specific Embodiment approach 1

[0006] Specific embodiment one: the manufacturing method of the hybrid fiber composite mast in this embodiment is realized through the following steps: step one, design the core mold according to the cross-sectional shape of the mast, and the length of the core mold is 4 to 12 meters; step two, respectively Dry the carbon fiber and glass fiber at 80-100°C for 5.5-6.5 hours. In order to remove the moisture of the fiber, the dried carbon fiber is immersed in the resin mixture for 20-30 seconds according to the mass ratio of 59:41 to obtain an impregnated The carbon fiber and resin mixture account for 17% to 25% of the total mass of the impregnated carbon fiber; the dried glass fiber is immersed in the resin mixture for 20 to 30 seconds according to the mass ratio of 59:41 to obtain the impregnated glass fiber and resin mixture Accounting for 17% to 25% of the total mass of impregnated glass fibers; step 3, install the mandrel on the winding machine, and wrap the impregnated carbo...

specific Embodiment approach 2

[0007] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the material of the mandrel in step 1 is glass fiber reinforced plastic. The core mold of this material can be used repeatedly and has high rigidity.

specific Embodiment approach 3

[0008] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the resin mixture described in step two is prepared by the mass ratio of epoxy resin and m-phenylenediamine in the ethanol solution of 100:21.7, and the resin The viscosity of the mixed solution is controlled within the range of 0.35 to 1.0 Pa·s, wherein the ethanol solution of m-phenylenediamine is prepared from ethanol and m-phenylenediamine at a mass ratio of 1:1, and the heating and curing in step 4 is divided into three stages Carrying out: firstly curing at 40-50°C for 3 hours, then at 80°C for 2 hours, and finally at 120°C for 2 hours. Controlling the viscosity of the resin mixture within the range of 0.35-1.0 Pa·s can make the carbon fiber and glass fiber soak into the glue solution. This preparation avoids a large number of pores during the curing process, thereby affecting the performance of the cured product.

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Abstract

The invention provides a method for manufacturing a mast made of an assorted fiber composite material, and relates to a method for manufacturing the mast. The invention aims to solve the problems of the prior metal mast has large mass, low strength and poor stability, and limits the quick sailing of ships. The method comprises the following steps: 1, designing and preparing a core mold; 2, impregnating dry carbon fibers and glass fibers in a resin mixed solution to obtain the assorted fiber composite material; 3, winding the assorted fiber composite material on the core mold layer by layer; 4, heating and solidifying the core mold; and 5, obtaining a rough rod of the mast made of the assorted fiber composite material after detaching the core mold, removing the processing length at two ends of the rough rod, removing burrs and obtaining the mast made of the assorted fiber composite material. As the mast of the invention is made by mixing the carbon fibers and the glass fibers, the weight of the mast is 43.4 percent lighter than that of the metal mast; the strength of the mast made of the assorted fiber composite material is improved, the stability of sailing ships is improved, and the sailing ships can be sailed quickly.

Description

technical field [0001] The invention relates to a manufacturing method of a mast. Background technique [0002] As an important part of a sailboat, the mast of a sailboat is an important device to propel the sailboat to sail. In addition, it can also be used to install signal lights, hang flags, set up telegraph antennas, support booms, hoist and unload goods, etc. Traditional masts are made of metal materials, which have the disadvantages of high density, insufficient strength and rigidity, and poor stability under strong winds, which is not conducive to its navigation control and limits the fast sailing of the ship. In addition to increasing the weight of the sailboat, the weight of the mast makes the center of gravity of the mast and the speedboat rise, thus requiring more ballast, which increases the weight of the keel of the ship, making the hull difficult to balance. The composite material industry has been closely related to the boat industry from the very beginning...

Claims

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Application Information

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IPC IPC(8): B29C70/30B29C70/54B29B13/06B29B15/10B29C33/38C08L63/00C08L79/00B29K307/04B29K309/08B29L31/06
Inventor 赫晓东王荣国刘文博郭琼张剑光矫维成
Owner HARBIN INST OF TECH
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