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A coating method for composite toughened thin rods

A composite material and coating technology, which is applied in the coating field of composite toughened thin rods, can solve the problems of inappropriate modification of composite thin rods, difficult to find, etc., and achieves a simple method, improved interface performance, and good interface. performance effect

Active Publication Date: 2018-09-18
江苏德晴新材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When conventional coating methods are used to modify toughened thin rods, it is difficult to find a reagent that can bond to both the cured thin rod surface and the uncured laminate
Therefore, traditional coating methods are not suitable for the modification of composite thin rods

Method used

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  • A coating method for composite toughened thin rods
  • A coating method for composite toughened thin rods
  • A coating method for composite toughened thin rods

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Embodiment Construction

[0031] Further describe the present invention below in conjunction with embodiment and accompanying drawing thereof:

[0032] It is 0.55mm, the coating process of the coated thin rod of 400 order carbon fiber powder that adopt coating method of the present invention to prepare diameter to provide below:

[0033] Thin rod coating process such as figure 1 shown. A bundle of T300-3k carbon fiber enters the resin tank 2 to impregnate the resin, and then enters the initial forming mold 3, the initial forming mold 3, such as figure 2As shown, there is a circular through-hole mold cavity 301 with a length of 7 mm and a diameter of 0.50 mm.

[0034] Thin rod 10 enters in the coating chamber 4 that fills 400 mesh carbon fiber powders immediately after being pulled out from mold 3, and the total stroke (inner cavity length) of uncured thin rod in coating chamber 4 is 300mm, and the drawing of thin rod 10 The pulling speed is 1m / min. The length direction of the coating chamber 4 is ...

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Abstract

The invention relates to a coating method of a composite toughened slender rod, and belongs to the technical field of composite surface modification. The coating method comprises the following steps that firstly, fiber bundles soaked in resin penetrate through a small hole primary forming mold, and the circular section shape is formed; secondly, the fiber bundles penetrate through a coating chamber with carbon fiber powder coating stored inside; thirdly, the slender rod passes through a dust collection device which does not make direct contact with the slender rod, and carbon fiber powder which bonded to the surface infirmly are removed; fourthly, the slender rod passes through a preheating device and a heating device for preheating and gelling; fifthly, the slender rod passes through a shaping mold for shaping; sixthly, the slender rod is solidified through the heating device; and finally, the slender rod passes through a dust collector with fine bristle brushes, and fiber powder bonded to the surface of the slender rod infirmly is removed. The coating method can be achieved in the production process of the slender rod, the fiber powder is used as the coating, the bonding performance of coated composites is used, chemical residues are avoided, a separated coating procedure is omitted, the method is simple, and the efficiency is high.

Description

technical field [0001] The invention relates to the surface modification technology of composite materials, in particular to a coating technology for toughened thin rods of composite materials. The coating technology is mainly used to improve the interface performance between toughened thin rods of composite materials and laminated plates. Background technique [0002] Traditional two-dimensional laminated composite materials have good in-plane mechanical properties, but there is no fiber reinforcement between the layers, and only the matrix resin plays the role of bonding and transmitting loads, so it is perpendicular to the direction of the layup and between the layups. performance is relatively weak. When subjected to external loads, the laminated composite material often produces interlaminar damage first, and the low interlaminar strength of the composite material also leads to poor damage resistance of the composite material. In order to improve these shortcomings of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/52B29C70/54
CPCB29C70/521B29C70/525B29C70/528
Inventor 王晓旭陈利房倩倩
Owner 江苏德晴新材股份有限公司
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