CN102173058A - Diversion method for composite vacuum perfusion molding process - Google Patents
Diversion method for composite vacuum perfusion molding process Download PDFInfo
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- CN102173058A CN102173058A CN2010105951471A CN201010595147A CN102173058A CN 102173058 A CN102173058 A CN 102173058A CN 2010105951471 A CN2010105951471 A CN 2010105951471A CN 201010595147 A CN201010595147 A CN 201010595147A CN 102173058 A CN102173058 A CN 102173058A
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- permeable medium
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Abstract
The invention belongs to the field of composite molding processes and mainly provides a diversion method for a composite vacuum perfusion molding process. The diversion method comprises the steps of paving diversion mediums (5) on the upper surface of a dry fiber paving layer, wherein the intervals among the diversion mediums located on the upper surface of the dry fiber paving layer form a diversion medium partition area (8); overlapping a diversion bridge (9) between the adjacent diversion mediums (5) with the intervals, wherein the adjacent diversion mediums (5) with the intervals are communicated by the diversion bridge; and cooperating the diversion bridge (9) overlapped between the adjacent diversion mediums (5) with the intervals with the diversion medium partition area (8) formed by the intervals among the diversion mediums so as to control the dispersion speed of liquid resin on the upper layer of the paving layer and guarantee the permeation and dispersion speed of the liquid resin in a direction perpendicular to the paving layer which is the bottom layer, wherein the diversion bridge overlapped between the adjacent diversion mediums with the intervals is composed of the diversion mediums (5).
Description
Technical field
The invention belongs to the composite material process planning technical field, mainly propose a kind of method of river diversion of composite vacuum infusion molding technology.
Background technology
The vacuum infusion molding technological principle is: do the fiber lay down layer in composite material mould, lay permeable medium at dried fiber lay down layer upper surface, then these are done shop layer and permeable medium and set up vacuum sealing system together with mould, the shop layer is soaked in the dispersion that makes liquid resin pass through permeable medium under vacuum pressure at last fully.
Permeable medium is to have certain thickness space reticulated, liquid resin is under vacuum pressure, be distributed to rapidly in these space network structures, surface and the bottom infiltration of realization to doing the fiber lay down layer, and simultaneously by the space network structure eliminating liquid resin of permeable medium and the residual gas in the layer structure of shop.In vacuum forming technique, permeable medium plays crucial effects, liquid resin is distributed in the dried fiber lay down layer structure on surface and bottom infiltration by permeable medium, realizes that finally whole dried fiber lay down layer structure and liquid resin merge fully and solidify to form goods.And the space network structure of permeable medium can effectively be got rid of the residual gas in liquid resin and the shop layer structure, these residual gas influence goods service life and chemical resistance, weatherability if stay the stretch-proof that will cause goods in the layer structure of shop, counter-bending, anti-shearing, resistance to compression reduction when reducing the goods mechanical property.
Some large-scale composite material product, for example: barge, blade of MW class wind turbine, motorbus ceiling, aircraft wing etc., because of build is bigger, shape is single, is particularly suitable for adopting the manufacturing of vacuum infusion molding explained hereafter.The technological process principle of these large components is identical, but during the product of moulding different model and specification need according to properties of product require different lay disalignment to glass fibre, be generally single shaft to multiaxis to glass fibre, difference according to the laying machine direction, when these upper surfaces of doing the shop layer are laid permeable medium, need be according to the different dry fiber of being laid, different-thickness and design different permeable medium and cut off the district, purpose is that the degree that makes liquid resin disperse in permeable medium is controlled, reaches suitable degree to realize the infiltration of liquid resin in top layer and bottom shop layer structure.Promptly according to the dried fleece-laying of different-thickness, different directions, some zone of permeable medium, surface needs to lay, and some zone need not to lay, control liquid resin with this and disperse seepage velocity in shop laminar surface speed and vertical direction, these zones of not laying permeable medium are the permeable medium exclusion region.The common vacuum infusion molding permeable medium paving mode that adopts of large-scale composite material product is seen Fig. 1 at present.
But in the priming by vacuum process, liquid resin because there is not the permeable medium peptizaiton, can cause by the permeable medium exclusion region time:
1, liquid resin is promptly slightly being accelerated to the speed of bottom infiltration perpendicular to shop layer direction.Help the infiltration of the bigger shop layer structure of thickness.
2, liquid resin is almost completely lost in shop layer body structure surface speed, causes surperficial rate of dispersion extremely slow, and the liquid resin flowing velocity reduces greatly.The influence that produces is: molding time is long, production efficiency is low, liquid resin can not soak into the risk of doing the shop layer fully and increases in the filling process.
3, residual gas can't be got rid of by permeable medium in liquid resin and the dried shop layer structure, simultaneously, gas floats to layer upper strata, shop in the liquid resin of infiltration and the bottom shop layer structure downwards, make these gases all collect in the layer upper strata, shop of permeable medium exclusion region, cause goods stretch-proof, counter-bending, anti-shearing, resistance to compression to reduce, influence goods service life and chemical resistance, weatherability when reducing the mechanical property of goods.
Therefore, the exclusion region of design permeable medium is necessary in the vacuum infusion molding technology, but can bring more negative issues simultaneously.
Summary of the invention
For solving these negative issues, the present invention proposes a kind of method of river diversion of composite vacuum infusion molding technology, making liquid resin is that speed that bottom infiltration disperse obtain coordinate with liquid resin in vertical shop layer direction at layer upper strata, shop rate of dispersion, satisfy liquid resin simultaneously and permeate the needs that disperse with liquid resin in vertical shop layer direction in the dispersion flows on layer upper strata, shop, unnecessary gas can effectively be got rid of in liquid resin and the shop layer structure simultaneously, guarantees the goods total quality.
The present invention finishes the technical scheme that its invention task takes:
A kind of method of river diversion of composite vacuum infusion molding technology, the dried fiber lay down layer upper surface of laying in composite material mould laid permeable medium, described have between the permeable medium of doing fiber lay down layer upper surface at interval, and the interval between the described permeable medium constitutes the permeable medium exclusion region; Between the adjacent permeable medium that has at interval, overlap joint water conservancy diversion bridge, described water conservancy diversion bridge will have between the adjacent permeable medium at interval and be communicated with, and liquid resin by the permeable medium exclusion region, is distributed to adjacent permeable medium district by the water conservancy diversion bridge; Has the water conservancy diversion bridge that overlaps between the adjacent permeable medium at interval, the permeable medium exclusion region that constitutes with interval between the permeable medium cooperates, the control liquid resin at layer upper strata, a shop rate of dispersion, guarantee that liquid resin is the speed of bottom infiltration dispersion in vertical shop layer direction; The water conservancy diversion bridge that overlaps between the described adjacent permeable medium that has at interval is made of permeable medium.
The method of river diversion of the composite vacuum infusion molding technology that the present invention proposes, has the water conservancy diversion bridge that overlaps between the adjacent permeable medium at interval, the permeable medium exclusion region that constitutes with interval between the permeable medium cooperates, the control liquid resin at layer upper strata, a shop rate of dispersion, guarantee that liquid resin is the speed of bottom infiltration dispersion in vertical shop layer direction; Simultaneously unnecessary gas can be got rid of by the water conservancy diversion bridge in liquid resin and the shop layer structure, makes the stretch-proof of shop layer structure, counter-bending, anti-shearing, resistance to compression raising; Goods service life and chemical resistance, weatherability improve, and guarantee large-scale vacuum perfusion goods total quality; And simple to operate, it is convenient to implement, and compares with traditional method of river diversion, liquid resin is all more efficient in the infiltration of the bottom of the infiltration on layer structure top layer, shop, shortened goods molding time, improved production efficiency of products.
Description of drawings
Fig. 1 is that large-scale composite material product vacuum infusion molding technology permeable medium is laid schematic diagram.
Fig. 2 lays schematic diagram for large-scale composite material product vacuum infusion molding technology permeable medium of the present invention.
Among the figure, 1, vacuum pumping opening, 2, ventilative medium, 3, exhaust pipe, 4, compound material laying layer structure, 5, permeable medium, 6, the priming by vacuum pipeline, 7, liquid liquid resin inlet, 8 permeable mediums cut off the district, and 9, the water conservancy diversion bridge.
The specific embodiment
In conjunction with the accompanying drawings, embodiments of the invention are illustrated:
As shown in Figure 2, the present invention has improved permeable medium paving mode in the traditional vacuum pouring and forming process, re-lays the permeable medium formation water conservancy diversion bridge of certain size in the exclusion region of traditional vacuum infusion molding technology laying permeable medium.
Embodiment 1:
The large-scale composite material wind-power blade vacuum infusion molding application example of the wide 5m of long 50m.
The 50m wind electricity blade is divided into lower house, when moulding on lower house adopt vacuum infusion molding respectively, after solidifying, will go up lower house again and stick with glue that agent is bonding to become one.The ply sequence of last lower house and shop layer structure are in full accord, wherein arbitrary half housing that is referred to as.
Half housing is when moulding, mould at half housing is laid 3 layers of dried fibrage from the full surface of 10m to 50m along its length, lay the composite girder that forms by the one-way glass fibre preforms along its length at 10m～50m, described girder is positioned at the center of mould width, the cellular type core material with the girder equal height is laid in the both sides of girder, re-lays 3 layers of glass fibre on the surface of girder and cellular type core material then.
Lay two permeable mediums along its length in the girder both sides at above-mentioned dried shop layer upper surface at last.This permeable medium constitutes by having certain thickness space reticulated, its effect is when carrying out vacuum infusion molding, liquid resin is under vacuum pressure, can be distributed to rapidly in these space network structures, surface and the bottom infiltration of realization to doing the fiber lay down layer, and simultaneously by the space network structure eliminating liquid resin of permeable medium and the residual gas in the layer structure of shop.Have between described two permeable mediums at interval, described interval constitutes the exclusion region of permeable medium, the effect that exclusion region is set is to make resin reduce superficial velocity in exclusion region, accelerates the flowing velocity of bottom, makes liquid resin can permeate and be distributed to the crossbeam bottom.The width of described exclusion region is 50～80mm (with the room temperature is benchmark, and the width of the high more interval region of environment temperature is big more, and the width in the low more spacer region of environment temperature territory is more little).In described exclusion region a plurality of water conservancy diversion bridges being set is communicated with two exclusion region, spacing between the adjacent water conservancy diversion bridge is that (with the room temperature is benchmark to 500～1000mm, spacing between the high more adjacent water conservancy diversion bridge of environment temperature is big more, and the spacing between the low more water conservancy diversion bridge of environment temperature is more little).The purpose that the water conservancy diversion bridge is set is: water conservancy diversion bridge and flow medium exclusion region cooperatively interact, and the control liquid resin is the speed of bottom infiltration dispersion at layer upper strata, shop rate of dispersion, assurance liquid resin in vertical shop layer direction; Unnecessary gas can be got rid of by the water conservancy diversion bridge in liquid resin and the shop layer structure simultaneously.
Embodiment 2:
The large-scale composite material wind-power blade vacuum infusion molding application example of the wide 5m of length 50m.
The 50m wind electricity blade is divided into lower house, when moulding on lower house adopt vacuum infusion molding respectively, after solidifying, will go up lower house again and stick with glue that agent is bonding to become one.The ply sequence of last lower house and shop layer structure are in full accord, wherein arbitrary half housing that is referred to as.
Half housing when moulding, the mould of lower house along its length in 0m to the 10m scope full surface lay 100 layers of dried fibrage.
Lay two permeable mediums in above-mentioned dried shop layer upper surface broad ways then.This permeable medium constitutes by having certain thickness space reticulated, its effect is when carrying out vacuum infusion molding, liquid resin is under vacuum pressure, can be distributed to rapidly in these space network structures, surface and the bottom infiltration of realization to doing the fiber lay down layer, and simultaneously by the space network structure eliminating liquid resin of permeable medium and the residual gas in the layer structure of shop.Have between described two permeable mediums at interval, described interval constitutes the exclusion region of permeable medium, and the effect that exclusion region is set is to make resin reduce superficial velocity in exclusion region, accelerates liquid resin and is doing shop layer bottom flowing velocity.The width of described exclusion region is 30～50mm (with the room temperature is benchmark, and the width of the high more interval region of environment temperature is big more, and the width in the low more spacer region of environment temperature territory is more little).In described exclusion region a plurality of water conservancy diversion bridges being set is communicated with two exclusion region, spacing between the adjacent water conservancy diversion bridge is that (with the room temperature is benchmark to 300～500mm, spacing between the high more adjacent water conservancy diversion bridge of environment temperature is big more, and the spacing between the low more water conservancy diversion bridge of environment temperature is more little).Purpose is: water conservancy diversion bridge and flow medium exclusion region cooperatively interact, and the control liquid resin is the speed of bottom infiltration dispersion at layer upper strata, shop rate of dispersion, assurance liquid resin in vertical shop layer direction; Unnecessary gas can be got rid of by the water conservancy diversion bridge in liquid resin and the shop layer structure simultaneously.
Claims (1)
1. the method for river diversion of a composite vacuum infusion molding technology, in composite material mould, do the fiber lay down layer, lay permeable medium (5) at dried fiber lay down layer upper surface, described have between the permeable medium of doing fiber lay down layer upper surface at interval, and the interval between the described permeable medium constitutes permeable medium exclusion region (8); It is characterized in that: have between the adjacent permeable medium (5) at interval, overlap joint water conservancy diversion bridge (9), described water conservancy diversion bridge will have connection between the adjacent permeable medium (5) at interval, liquid resin by permeable medium exclusion region (8), is distributed to adjacent permeable medium district by water conservancy diversion bridge (9); Water conservancy diversion bridge (9) with overlap joint between the adjacent permeable medium (5) at interval, the permeable medium exclusion region (8) that constitutes with interval between the permeable medium cooperates, the control liquid resin at layer upper strata, a shop rate of dispersion, guarantee that liquid resin is the speed of bottom infiltration dispersion in vertical shop layer direction; The water conservancy diversion bridge that overlaps between the described adjacent permeable medium that has at interval is made of permeable medium (5).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814996A (en) * | 2012-08-24 | 2012-12-12 | 中国人民解放军国防科学技术大学 | Preparing method of hybrid composite wing spar of large-scale wind power blade |
| CN107415278A (en) * | 2017-07-07 | 2017-12-01 | 咸宁海威复合材料制品有限公司 | The vacuum assisted resin infusion device and technique of a kind of composite |
| CN110328867A (en) * | 2019-07-05 | 2019-10-15 | 国电联合动力技术(连云港)有限公司 | A kind of fan blade water conservancy diversion method for arranging |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006039124A2 (en) * | 2004-09-29 | 2006-04-13 | The Boeing Company | Apparatuses, systems, and methods for manufacturing composite parts |
| CN101462360A (en) * | 2007-12-18 | 2009-06-24 | 上海玻璃钢研究院 | High-power wind mill blade root disposal vacuum auxiliary pouring and molding method |
-
2010
- 2010-12-20 CN CN 201010595147 patent/CN102173058B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006039124A2 (en) * | 2004-09-29 | 2006-04-13 | The Boeing Company | Apparatuses, systems, and methods for manufacturing composite parts |
| WO2006039124A3 (en) * | 2004-09-29 | 2006-08-10 | Boeing Co | Apparatuses, systems, and methods for manufacturing composite parts |
| CN101462360A (en) * | 2007-12-18 | 2009-06-24 | 上海玻璃钢研究院 | High-power wind mill blade root disposal vacuum auxiliary pouring and molding method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814996A (en) * | 2012-08-24 | 2012-12-12 | 中国人民解放军国防科学技术大学 | Preparing method of hybrid composite wing spar of large-scale wind power blade |
| CN107415278A (en) * | 2017-07-07 | 2017-12-01 | 咸宁海威复合材料制品有限公司 | The vacuum assisted resin infusion device and technique of a kind of composite |
| CN110328867A (en) * | 2019-07-05 | 2019-10-15 | 国电联合动力技术(连云港)有限公司 | A kind of fan blade water conservancy diversion method for arranging |
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| CN102173058B (en) | 2013-10-30 |
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