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Device and method for measuring fiber permeability of flat plate preform

A technology of preforms and measuring devices, which is applied in the directions of measuring devices, permeability/surface area analysis, suspension and porous material analysis, etc. It can solve problems such as single function, cost waste, and complicated measurement methods, so as to avoid cost waste , easy operation, and simple measurement process

Inactive Publication Date: 2018-12-11
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects of the existing measurement methods such as complex, single function, low efficiency, and waste of cost, the present invention provides a measuring device and method for body fiber permeability with simple measurement process, easy operation, simplicity and high efficiency, and avoiding cost waste

Method used

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  • Device and method for measuring fiber permeability of flat plate preform
  • Device and method for measuring fiber permeability of flat plate preform
  • Device and method for measuring fiber permeability of flat plate preform

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Embodiment 1

[0022] combine figure 1 Describe this embodiment, in this embodiment, a kind of measuring device that is used for the fiber permeability of flat plate preform that the present invention relates to, it comprises resin tank 1, catalyst tank 2, static mixer 3, resin tube 4, Vacuum bag film 5, diversion net 6, release cloth 7, fiber preform 8, mold 9, sealing tape 10, resin recovery tank 11, vacuum pump 12, sensor 14, No. 1 conduit and No. 2 conduit; the resin tank 1 and the outlet of the catalyst tank 2 are respectively connected with the two inlets of the static mixer 3, the sealing tape 10 seals the vacuum bag film 5 on the mold 9 and forms a sealed space, and the outlet of the static mixer 3 passes through the resin tube 4 communicates with the sealed space, a plurality of sensors 14 are arranged on the mold 9, the guide net 6, the release cloth 7 and the fiber preform 8 are all arranged in the sealed space, the fiber preform 8, the release cloth 7. The diversion net 6 is pla...

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Abstract

The invention discloses a device and method for measuring the fiber permeability of a flat plate preform, belong to the field of production of composite laminated plates, and particularly relates to the device and method for measuring the fiber permeability of the flat plate preform. The device and the method aim at overcoming the existing defects. The device and method for measuring the fiber permeability of the flat plate preform have the advantages of being simple in measuring process, easy to operate, simple, convenient to use, efficient and capable of avoiding the cost waste. The method comprises the following steps that after a mold is cleaned, the mold is uniformly coated with a mold release agent, and a fiber preform, mold release cloth and a flow guide net are sequentially laid; sensors are placed in parallel in the resin flowing direction to monitor the resin flowing forward positions; and a vacuum pump is started to vacuumize the mold, resin fills the mold and flows, the fiber preform is impregnated, the resin flowing forward positions corresponding to different moments are recorded by utilizing the sensors, and the recorded mold filling time and the mold filling forwardare substituted into a formula so as to calculate the fiber permeability of the flat plate preform. The device and the method are mainly applied to measurement of the fiber permeability of the flat plate preform.

Description

technical field [0001] The invention belongs to the field of composite material laminate production, and in particular relates to a measuring device and method for fiber permeability of a flat preform. Background technique [0002] The importance of measuring the permeability of fiber reinforcement lies in: on the one hand, it controls the mold filling time, thereby affecting the mold design and the position of the injection port and the exhaust port together with the curing kinetics of the resin, which is a key parameter required for numerical simulation; On the one hand, it determines the flow characteristics and controls the way the resin impregnates the fiber bundles, which is the key to obtaining high-quality products. Incomplete impregnation of fibers with resin may lead to defects such as air bubbles and dry spots, which seriously affect the quality of composite products. The measurement of natural plant fiber permeability plays an important guiding role in optimizin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/0826
Inventor 刘诚花军徐硕贾娜许子涵
Owner NORTHEAST FORESTRY UNIVERSITY
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