CN108749039B - High-performance fiber spacer fabric and resin compounding device and method - Google Patents
High-performance fiber spacer fabric and resin compounding device and method Download PDFInfo
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- CN108749039B CN108749039B CN201810470558.4A CN201810470558A CN108749039B CN 108749039 B CN108749039 B CN 108749039B CN 201810470558 A CN201810470558 A CN 201810470558A CN 108749039 B CN108749039 B CN 108749039B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
- B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/543—Fixing the position or configuration of fibrous reinforcements before or during moulding
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- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Textile Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a high-performance fiber spacer fabric and resin compounding device which comprises a box body, a clamping assembly, a heating assembly, a resin pouring assembly, a fan system, a control panel and a vacuum auxiliary forming system. The clamping assembly, the fan system and the heating assembly are all located in the box body. The control panel, the resin pouring assembly and the vacuum auxiliary forming system are all arranged on the box body; the resin pouring component and the vacuum auxiliary forming system are communicated with the inner cavity of the box body. The control panel is respectively and electrically connected with the clamping assembly, the heating assembly, the resin pouring assembly, the fan system and the vacuum auxiliary forming system. The invention also provides a method for compounding the high-performance fiber spacer fabric and the resin by using the device, which solves the problem of uneven distribution of bubbles and resin in the resin and the spacer fabric, thereby avoiding the influence of the level, experience and labor attitude of operators and improving the product quality.
Description
Technical Field
The invention relates to a carbon fiber forming process technology, in particular to a high-performance fiber spacer fabric and resin compounding device and method.
Background
The spacer fabric is a three-dimensional woven fabric which is connected between two parallel fabric plane structures by a group of vertical yarns or a vertical structure, has continuous holes and has the characteristics of good integrity, light weight and good impact resistance. The spacer fabric can be generally woven by high-performance fibers such as carbon fibers, glass fibers, aramid fibers or basalt fibers.
High-performance fiber spacer fabrics (hereinafter simply referred to as spacer fabrics) are often used not alone, but as reinforcing materials and resins to form high-performance fiber spacer fabric composites. The composite material is prepared by a process of weaving first and then compounding. Meanwhile, the special space structure of the spacer fabric is difficult to completely open when the spacer fabric is compounded, so that resin is difficult to uniformly diffuse along fibers, and the compounding of the woven fabric and the resin becomes very difficult.
The existing process for processing the spacer fabric into the composite material basically adopts a hand pasting method, but the hand pasting process is easily influenced by the level, experience and labor attitude of operators, has the defects of low production efficiency, high labor intensity, poor labor sanitary condition, easy generation of gummosis phenomenon during compounding, more bubbles in a product, uneven resin coating and poor product performance stability, and has great influence on the use of the high-performance spacer fabric composite material.
Disclosure of Invention
The invention aims to provide a high-performance fiber spacer fabric and resin compounding device and a high-performance fiber spacer fabric and resin compounding process, which can avoid the influence of the level, experience and labor attitude of operators so as to improve the product quality.
In order to solve the technical problem, the invention provides a high-performance fiber spacer fabric and resin composite device, which comprises a box body with a front door and a back door; a vacuum auxiliary forming system is arranged on the box body and comprises a vacuum pump;
a clamping assembly and a heating assembly are arranged in the inner cavity of the box body;
the box body is also provided with a resin pouring assembly and a control panel;
the control panel is electrically connected with the clamping assembly, the heating assembly, the resin pouring assembly and the vacuum pump respectively;
an air inlet of the vacuum pump penetrates through the box body and is communicated with the inner cavity of the box body, and an air outlet of the vacuum pump is communicated with the external environment;
the clamping assembly comprises an upper pressure plate, a lower supporting plate, a fixed support column and a telescopic support column;
the upper end of the telescopic strut is connected with the box body, and the lower end of the telescopic strut is connected with the upper surface of the upper pressure plate;
the fixed support is positioned at the bottom of the inner cavity of the box body, the lower end of the fixed support is connected with the box body, and the upper end of the fixed support is connected with the lower surface of the lower supporting plate;
the lower supporting plate is positioned right below the upper pressing plate;
the lower supporting plate is used for placing the spacer fabric, the upper pressing plate and the lower supporting plate are enclosed to form a placing cavity, and the spacer fabric is located in the placing cavity;
the resin pouring component is communicated with the placing cavity;
a pressure sensor is arranged on the upper surface of the lower supporting plate;
the pressure sensor and the telescopic support column are electrically connected with the control panel.
As an improvement of the high-performance fiber spacer fabric and resin composite device of the invention:
the pressure sensor is a telescopic pressure sensor which is matched with the height of the spacer fabric;
the lower surface of the upper pressure plate is provided with a pressure head which is matched with the pressure sensor to work;
the top of the pressure head is fixedly connected with the lower surface of the upper pressure plate, and the bottom of the pressure head is opposite to the pressure sensor.
As a further improvement of the high-performance fiber spacer fabric and resin composite device of the invention:
the resin pouring assembly comprises a resin storage and a resin collector, wherein the resin storage is provided with at least one resin conduit I communicated with the resin storage, and the resin collector is provided with at least one resin conduit II communicated with the resin collector;
a liquid outlet is arranged on the resin storage device, a valve is arranged at the liquid outlet, and the liquid outlet is communicated with the resin conduit I through the valve;
the valve is electrically connected with the control panel.
As a further improvement of the high-performance fiber spacer fabric and resin composite device of the invention:
the upper pressing plate is provided with at least one flow guide hole penetrating through the upper pressing plate, and the lower surface of the upper pressing plate is also provided with at least one flow guide groove;
a resin conduit I communicated with the resin storage device passes through the diversion hole and is communicated with the placing cavity;
the lower supporting plate is a flat box body without a cover and consists of a lower supporting plate bottom plate and 4 lower supporting plate side walls; the bottom plate of the lower supporting plate is provided with a liquid collecting tank, and the bottom of the liquid collecting tank is provided with a drain hole penetrating through the bottom plate of the lower supporting plate.
And a resin conduit II communicated with the resin collector passes through the emptying hole and is communicated with the placing cavity.
As a further improvement of the high-performance fiber spacer fabric and resin composite device of the invention:
the clamping assembly further comprises a stay which is matched with the spacing height of the spacing fabric and used for expanding the spacing space of the spacing fabric.
As a further improvement of the high-performance fiber spacer fabric and resin composite device of the invention:
the heating assembly comprises at least two heaters, one heater is positioned at the top of the inner cavity of the box body, and the other heater is positioned at the bottom of the inner cavity of the box body; each heater is electrically connected to the control panel.
As a further improvement of the high-performance fiber spacer fabric and resin composite device of the invention:
the high-performance fiber spacer fabric and resin compound device also comprises a fan system;
the fan system comprises at least 2 fans, one fan is a blower, the other fan is an exhaust fan, the blower is positioned at the bottom of the side wall of the inner cavity of the box body (any one of two sides of the box body without the door), and the exhaust fan is positioned at the top of the inner cavity of the box body;
each fan is electrically connected with the control panel.
In order to solve the technical problem, the invention also provides a method for compounding the high-performance fiber spacer fabric with the resin by using the device, which comprises the following steps:
s1, preprocessing:
cutting a spacer fabric to be compounded with resin;
utilizing the stay to prop open the spacing space of the spacing fabric, and placing the spacing fabric on the lower supporting plate;
adjusting the telescopic support columns by using a control panel to enable the upper pressure plate to press the upper surface of the spacer fabric and give a pressure of 1.2-2 MPa to the spacer fabric;
s2, dipping:
the vacuum pump is started by using the control panel, the vacuum pump vacuumizes the box body, and resin in the resin storage is pumped into the spacer fabric through the resin guide pipe I; until the resin completely soaks the fabric, closing a valve at a liquid outlet of the resin storage by using a control panel;
s3, thermosetting:
turning on the heater using the control panel;
in the step S2, the resin-impregnated spacer fabric is heated to 110-130 ℃ at a heating rate of 1-2 ℃/min at room temperature (20-30 ℃) in a vacuum state in the whole process, and is heated for 3-5 hours at the temperature, so that the resin-impregnated spacer fabric is cured and molded to obtain a spacer fabric resin composite fabric;
s4, post-processing: the vacuum pump and the heater are closed through the control panel, and the fan is turned on; and opening the box door, and taking out the composite fabric after the temperature of the inner cavity of the box body is reduced to room temperature.
As a further improvement of the high-performance fiber spacer fabric and resin compounding method of the invention:
and (3) under the condition that the whole process of the spacing fabric impregnated with the resin in the step S3 is kept in a vacuum state, heating the spacing fabric impregnated with the resin to 120 ℃ at the room temperature (20-30 ℃) at the heating rate of 1.5 ℃/min, keeping heating at the temperature for 4 hours, and curing and molding the spacing fabric impregnated with the resin to obtain the spacing fabric resin composite fabric.
As a further improvement of the high-performance fiber spacer fabric and resin compounding method of the invention:
and (S2) after the resin completely soaks the spacer fabric, the redundant resin enters the liquid collecting tank and then enters the resin collector through the emptying hole and the resin conduit II in sequence for recycling.
Compared with the prior art, the invention has the technical advantages that:
1. the invention solves the problems of resin gumming, more product bubbles and uneven resin coating caused by the fact that the existing hand-lay-up method high-performance fiber spacer fabric and resin composite molding is easily influenced by the level, experience and labor attitude of operators. The semi-automation and the vacuum of the composite molding of the high-performance fiber spacer fabric and the resin are realized.
2. The device adopts the clamping assembly to completely open the space structure (space) of the high-performance fiber spacer fabric, so that the resin layer is distributed more uniformly, and meanwhile, the spacer fabric vertical yarns (such as 8-shaped vertical yarns) are endowed with perfect arrangement and mechanical properties;
3. the compounding of the resin and the high-performance fiber spacer fabric adopts a vacuum auxiliary forming system, so that the whole process is in a vacuum state, the problems of uneven distribution of bubbles and resin in the resin and the fabric are effectively solved, and the quality of the final composite material is improved;
4. in the process of resin curing, the high-performance fiber spacer fabric is in a state of high temperature and certain pressure, so that the adhesion of the resin to the high-performance fiber spacer fabric is enhanced, the performance of the composite material is also improved to a certain extent, more importantly, the curing of the resin is accelerated, and the production efficiency is improved;
5. the fan system is used for cooling the box body quickly and improving the production efficiency.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of a high performance spacer fabric and resin composite device according to the present invention;
FIG. 2 is a schematic view of the pressing surface (lower surface) of the upper platen 6 in FIG. 1;
fig. 3 is a schematic diagram illustrating the operation principle of the pressure sensor 14 and the pressure head 15 in fig. 1.
FIG. 4 is a schematic view of the spacer fabric in FIG. 1 in use with struts 7 being open;
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
Example 1, a high performance fiber spacer fabric and resin composite apparatus, as shown in fig. 1-4, includes a box, a clamping assembly, a heating assembly, a resin casting assembly, a blower system, a control panel 13, and a vacuum assisted molding system.
The heating assembly is positioned in the inner cavity of the box body and used for heating the inner cavity of the box body and accelerating the curing of resin. The heating assembly comprises at least two heaters 2 which correspond up and down, each heater 2 is electrically connected with the control panel 13, and the control panel 13 controls the heating temperature of the heaters 2. In the embodiment, 4 heaters 2 are arranged in the box body, two heaters 2 are fixed at the top of the inner cavity of the box body, and the rest two heaters 2 are arranged at the bottom of the inner cavity of the box body.
The fan system is located the box inner chamber for box rapid cooling, improve production efficiency. The fan system comprises at least 2 fans 5, each fan 5 is electrically connected with a control panel 13, and the control panel 13 controls the fans 5 to be switched on and off.
The blower system at least comprises a blower and an exhaust fan, the blower is positioned at the bottom of the side surface of the inner cavity of the box body (any one of two sides of the box body without the door), and the exhaust fan is positioned at the top of the inner cavity of the box body. The air inlet of the blower is communicated with the outdoor environment, the air outlet of the blower is communicated with the inner cavity of the box body, the air outlet of the exhaust fan is communicated with the outdoor environment, the air inlet of the exhaust fan is communicated with the inner cavity of the box body, and the blower and the exhaust fan can accelerate heat dissipation after thermosetting work is finished. In this embodiment, 4 fans 5, i.e., two exhaust fans and two exhaust fans, are provided.
The vacuum auxiliary forming system is used for enabling the inner cavity of the box body to be in a vacuum state in the working process, and solving the problem that air bubbles in resin and spacer fabric and the resin are not uniformly distributed, so that the quality of the final composite material is improved; the vacuum auxiliary forming system comprises at least 1 vacuum pump 11, wherein the air inlet of each vacuum pump 11 penetrates through the box body and is communicated with the inner cavity of the box body, and the air outlet is communicated with the external environment. Each vacuum pump 11 is electrically connected to a control panel 13, and the control panel 13 controls on/off of the vacuum pump 11. In this embodiment a vacuum pump 11 is provided.
The resin pouring component comprises a resin storage 4 and a resin collector 10, wherein the resin storage 4 is provided with at least one resin conduit I31 communicated with the resin storage, and the resin collector 10 is provided with at least one resin conduit II 32 communicated with the resin collector. A liquid outlet is arranged on the resin storage 4, a valve is arranged at the liquid outlet, and the liquid outlet is communicated with the resin conduit I31 through the valve. The valve is electrically connected with a control panel 13, and the control panel 13 controls on/off of the valve. In this embodiment, the resin reservoir 4 is provided with 4 resin conduits I31 communicated therewith, and the resin collector 10 is provided with 4 resin conduits II 32 communicated therewith.
The clamping assembly comprises an upper pressing plate 6, a lower supporting plate 8, a pressure sensor 14, a stay 7, a fixed support 9 and a telescopic support 1; the number of the stay 7, the fixed stay 9 and the telescopic stay 1 is at least 2, the number of the telescopic stays 1 and the fixed stay 9 is 4 in the embodiment, the number of the stay 7 is 2, and the specific working content of each telescopic stay 1, the fixed stay 9 and the stay 7 is the same, so the invention is described in detail only for one telescopic stay 1, one fixed stay 9 and one stay 7.
The telescopic strut 1 is positioned at the top of the inner cavity of the box body, the upper end of the telescopic strut 1 is fixedly connected with the box body, and the lower end of the telescopic strut 1 is fixedly connected with the upper surface of the upper pressure plate 6; the fixed support 9 is positioned at the bottom of the inner cavity of the box body, the lower end of the fixed support 9 is fixedly connected with the box body, and the upper end of the fixed support is fixedly connected with the lower surface of the lower supporting plate 8; lower pallet 8 is located directly below upper platen 6. The telescopic support column 1 is electrically connected with a control panel 13, and the control panel 13 controls the telescopic support column 1 to stretch and retract so as to push the upper pressure plate 6 to move up and down along with the telescopic support column 1. The lower supporting plate 8 and the upper pressing plate 6 enclose to form a placing cavity 100, and the lower supporting plate 8 is used for supporting a whole piece of spacer fabric, namely, the spacer fabric is placed on the upper surface of the lower supporting plate 8 and is positioned at the bottom of the placing cavity 100.
As shown in fig. 3, the upper press plate 6 is provided with a pressing head 15 at one end/both ends, and the top of the pressing head 15 is fixed on the lower surface of the upper press plate 6. The pressure sensor 14 is a telescopic pressure sensor and is fixed on the upper surface of the lower supporting plate 8 and is positioned right below the pressure head 15. The height of the telescopic pressure sensor is adjusted to be consistent with the height of the spacer fabric, namely, the top end of the telescopic pressure sensor is adjusted to be flush with the top end of the spacer fabric. When the upper pressing plate 6 moves downwards to be in contact with the spacing fabric placed on the upper surface of the lower supporting plate 8, the pressure head 15 is in contact with the telescopic pressure sensor, and when the upper pressing plate 6 starts to press downwards, the pressure head 15 is also pressed on the telescopic pressure sensor, so that the telescopic pressure sensor is compressed by the pressure head 15 in the process that the upper pressing plate 6 slowly presses downwards, and the pressure of the upper pressing plate 6 is measured; the pressure sensor 14 is connected to the control panel 13 for feeding back the pressure to the control panel 13. When the pressure reaches the required pressure value, the control panel 13 controls the telescopic prop 1 to stop extending outwards.
As shown in fig. 2, the upper press plate 6 is provided with at least one flow guide hole 61 penetrating through the upper press plate 6, and the lower surface (i.e., the pressing surface) of the upper press plate 6 is further provided with at least one flow guide groove 62; in this embodiment, the upper press plate 6 is provided with 4 diversion holes 61 respectively located at 4 corners of the upper press plate 6, and 7 diversion grooves 62 are provided as diversion members for the resin.
The flow guide holes 61 are correspondingly connected with the resin guide pipes I31 one by one; in this embodiment, the liquid outlet of the resin reservoir 4 is respectively communicated with the 4 resin conduits i 31 through valves, the 4 resin conduits i 31 are respectively communicated with the 4 diversion holes 61 in a one-to-one correspondence manner, and at this time, the liquid outlet of the resin reservoir 4 is communicated with the placement cavity 100 through the valves, the resin conduits i 31 and the diversion holes 61 in sequence.
As shown in fig. 3, the stay 7 is a strip-shaped plate adapted to the spacer fabric, and is used for spreading the space between the spacer fabric, and the weft yarns of the spacer fabric are left with lengths of about 1cm on both sides of the spacer fabric during weaving, and the part is not used for weaving and is called a selvedge (as shown in a part h in fig. 3); the stay 7 is placed in the interval between the upper and lower selvedges on both sides of the spacer fabric, and the height of the stay 7 is determined by the interval height of the spacer fabric.
The lower supporting plate 8 is a flat box body without a cover, and the area of the lower supporting plate is slightly larger than that of the upper pressing plate 6; the lower supporting plate 8 consists of a lower supporting plate bottom plate and 4 lower supporting plate side walls; the bottom plate of the lower supporting plate is provided with a liquid collecting groove 101, and the bottom of the liquid collecting groove 101 is provided with a drain hole 81 penetrating through the bottom plate of the lower supporting plate. The evacuation hole 81 communicates with the resin collector 10 through the resin conduit II 32. In this embodiment, the bottom plate of the lower supporting plate is fixedly and hermetically connected with the side wall of the lower supporting plate, and the bottom plate of the lower supporting plate is provided with a flow guide inclined plane, that is, the outer wall of the bottom plate of the lower supporting plate is a downward inclined plane, and the inclined plane and the inner wall of the side wall of the lower supporting plate enclose to form a liquid collecting tank 101; redundant resin flows into the liquid collecting tank 101 along the diversion inclined plane in the working process, and then sequentially enters the resin collector 10 through the emptying hole 81 and the resin guide pipe II 32, so that the redundant resin is recycled, the working cost is effectively reduced, and the resources are saved.
The resin storage device 4 is positioned at the top of the box body and hermetically penetrates through the box body to enter the inner cavity of the box body; the resin collector 10 is positioned at the bottom of the inner cavity of the box body; in the actual working process, the resin stored in the resin storage 4 flows into the placing cavity 100 from the diversion hole 61 through the resin conduit I31, and is rapidly diffused to the spacing fabric on the lower supporting plate 8 through the diversion groove 62; after entering the liquid collecting tank 101 along the diversion inclined plane, the redundant resin enters the resin collector 10 through the emptying hole 81 and the resin conduit II 32 in sequence.
The specific working process of the forming process of the spacer fabric composite material by utilizing the high-performance fiber spacer fabric and resin composite device is as follows:
note: the spacer fabric used was a glass fiber spacer fabric.
1. Pretreatment:
1.1, cutting a glass fiber spacer fabric; a release agent is applied to upper platen 6, stay 7, and lower blade 8.
1.2, the stay 7 coated with the release agent is placed in the interval between the selvedges on both sides of the cut glass fiber spacer fabric, and the space of the glass fiber spacer fabric is spread (as shown in fig. 3).
1.3, flatly placing the glass fiber spacer fabric with the stretched space structure obtained in the step 1.2 on a lower supporting plate 8 coated with a release agent; and adjust the telescopic prop 1 through the control panel 13, make the upper pressing plate 6 coated with release agent press on the spacer fabric steadily, at this moment, the upper pressing plate 6 is hugged closely with the upper surface of the spacer fabric of glass fiber, the bottom plate 8 is hugged closely with the lower surface of the spacer fabric of glass fiber, and the space of the spacer fabric of glass fiber is opened completely. And closing the box body door.
The pressing degree is controlled according to the pressing pressure of the upper pressing plate 6, the pressing pressure of the spacer fabric with different thicknesses during pressing is obtained through multiple pressing experiments, then the control panel 13 is recorded, and the control panel 13 is used for selecting the corresponding pressing pressure of the spacer fabric thickness in the actual working process; the pressure sensor 14 sends the detected pressure signal to the control panel 13, the pressure sensor 14 detects the pressure of the pressing head 15, namely the pressure of the pressing of the upper pressing plate 6, and when the pressure reaches the pressure set by the spacer fabric with the thickness, the control panel 13 controls the telescopic support 1 to stop moving, so that the upper pressing plate 6 stops pressurizing.
Note: the pressing force at the time of flattening means that the upper press plate 6 is pressed down, so that the upper press plate 6 gives a pressure to the upper surface of the spacer fabric (while the lower support plate 8 gives a pressure to the lower surface of the spacer fabric), thereby completely opening the space therebetween;
the spacing space is completely opened: the vertical yarns of the spacer fabric are straightened and do not have wrinkles or incline to a certain side, continuous holes among the vertical yarns are clear, the space between the holes is equal, and the whole binding yarns are vertical to the upper surface layer and the lower surface layer.
According to actual needs, the upper pressing plate 6 can give 1.2-2 MPa pressure to the spacer fabric, so that the space between the upper pressing plate and the spacer fabric is completely opened, in the embodiment, the upper pressing plate 6 gives 1.2MPa pressure to the upper surface of the glass fiber spacer fabric, and the lower supporting plate 8 gives 1.2MPa pressure to the lower surface of the glass fiber spacer fabric, so that the space between the glass fiber spacer fabric is completely opened.
2. And (3) dipping:
2.1, the vacuum pump 11 is opened through the control panel 13, the vacuum pump 11 vacuumizes the box body, and the whole working process is guaranteed to keep a vacuum state in the box.
Note: the vacuuming is used for draining the resin, so that the resin is not remained in gaps among the vertical yarns, and air bubbles in the spacer fabric are reduced, so that the resin infusion and infiltration quality is improved.
The vacuumizing only needs to realize the functions of draining the resin and reducing bubbles in the spacer fabric, the vacuum degree is 0.1MPa in the embodiment,
2.2, a valve at the liquid outlet of the resin storage 4 is opened through the control panel 13, the resin in the resin storage 4 sequentially passes through the valve, the resin conduit I31 and the diversion hole 61 to enter the placing cavity 100 under the action of pressure and gravity, and at the moment, the resin is rapidly diffused to the glass fiber spacer fabric on the lower supporting plate 8 through the diversion groove 62. When the resin completely soaks the spacing fabric and flows to the resin collector 10 from the resin conduit II 32, the valve at the liquid outlet of the resin storage 4 is closed.
In the process of infiltrating the glass fiber spacer fabric with the resin, vacuumizing not only assists the resin in infiltrating the glass fiber spacer fabric, but also enables the glass fiber spacer fabric to be in a vacuum state, so that air bubbles in the finally prepared composite fabric are effectively reduced; the resin is diffused through the flow guide grooves 62, and is recycled by the resin collector 10 after being completely soaked in the glass fiber spacer fabric, so that the problem that the resin coating is uneven due to the fact that the resin is manually coated in the prior art is solved, resources are saved, and the working cost is reduced.
Note: after entering the liquid collecting tank 101 along the diversion inclined plane, the redundant resin enters the resin collector 10 through the emptying hole 81 and the resin conduit II 32 in sequence.
The spacer fabric is only impregnated with resin and cured to form a composite material having stiffness.
Full-impregnation refers to resin impregnation of the upper fabric, lower fabric, and intermediate veils of the spacer fabric. The invention ensures that the resin flows rapidly by vacuumizing, thereby fully infiltrating the spacer fabric.
When the resin flows to the resin collector 10 from the resin conduit II 32, the interval fabric can be judged to be soaked by the resin, and in the actual working process, the valve at the liquid outlet of the resin storage device 4 can be closed after the resin is continuously collected for 1-2 minutes as required, so that the interval fabric is ensured to be completely soaked, bubbles in the resin can be fully eliminated, and the product quality is improved.
3. Thermosetting step:
the heater 2 is turned on by the control panel 13.
In this embodiment, 4 heaters 2 are used, two of which are located at the top of the box body and two of which are located at the bottom of the box body, so that the resin-impregnated glass fiber spacer fabric obtained in step 2.2 is heated. The heating process specifically comprises the following steps:
the glass fiber space fabric impregnated with the resin is heated to 120 ℃ at room temperature (25 ℃) at the heating rate of 1.5 ℃/min under the condition that the whole process is kept in a vacuum state (0.1MPa), and is kept heated for 4 hours at the temperature, so that the glass fiber space fabric impregnated with the resin is cured and molded, and the space fabric resin composite fabric (hereinafter referred to as composite fabric) is obtained.
Note: the glass fiber spacer fabric is in a high-temperature and high-pressure state in the resin curing process, so that the adhesion of the resin to the fabric is enhanced, the composite material is endowed with excellent mechanical property, the curing of the resin is accelerated, and the production efficiency is improved.
The high pressure refers to the pressure of the upper press plate 6 on the glass fiber spacer fabric.
4. And (3) post-treatment: the vacuum pump 11 and the heater 2 are turned off through the control panel 13, and the fan 5 is turned on; and opening the box door, and taking out the composite fabric after the temperature of the inner cavity of the box body is reduced to room temperature.
Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (4)
1. The high-performance fiber spacer fabric and resin compounding method by using the high-performance fiber spacer fabric and resin compounding device is characterized in that:
the high-performance fiber spacer fabric and resin composite device comprises a box body with a front door and a back door; a vacuum auxiliary forming system is arranged on the box body and comprises a vacuum pump (11);
a clamping assembly and a heating assembly are arranged in the inner cavity of the box body;
the box body is also provided with a resin pouring component and a control panel (13);
the control panel (13) is electrically connected with the clamping assembly, the heating assembly, the resin pouring assembly and the vacuum pump (11) respectively;
an air inlet of the vacuum pump (11) penetrates through the box body and is communicated with the inner cavity of the box body, and an air outlet of the vacuum pump is communicated with the external environment;
the clamping assembly comprises an upper pressure plate (6), a lower supporting plate (8), a fixed support column (9) and a telescopic support column (1);
the telescopic strut (1) is positioned at the top of the inner cavity of the box body, the upper end of the telescopic strut (1) is connected with the box body, and the lower end of the telescopic strut is connected with the upper surface of the upper pressure plate (6);
the fixed support (9) is positioned at the bottom of the inner cavity of the box body, the lower end of the fixed support (9) is connected with the box body, and the upper end of the fixed support is connected with the lower surface of the lower supporting plate (8);
the lower supporting plate (8) is positioned right below the upper pressing plate (6);
the lower supporting plate (8) is used for placing spacing fabrics, the upper pressing plate (6) and the lower supporting plate (8) are enclosed to form a placing cavity (100), and the spacing fabrics are located in the placing cavity (100);
the resin pouring component is communicated with the placing cavity (100);
a pressure sensor (14) is arranged on the upper surface of the lower supporting plate (8);
the pressure sensor (14) and the telescopic support column (1) are electrically connected with the control panel (13);
the clamping assembly also comprises a stay (7) matched with the spacing height of the spacing fabric and used for expanding the spacing space of the spacing fabric;
the resin pouring assembly comprises a resin storage device (4) and a resin collector (10), wherein the resin storage device (4) is provided with at least one resin conduit I (31) communicated with the resin storage device, and the resin collector (10) is provided with at least one resin conduit II (32) communicated with the resin collector;
a liquid outlet is arranged on the resin storage device (4), a valve is arranged at the liquid outlet, and the liquid outlet is communicated with the resin conduit I (31) through the valve;
the valve is electrically connected with the control panel (13);
the heating assembly comprises at least two heaters (2), one heater is positioned at the top of the inner cavity of the box body, and the other heater is positioned at the bottom of the inner cavity of the box body; each heater (2) is electrically connected with the control panel (13);
the high-performance fiber spacer fabric and resin compound device also comprises a fan system;
the fan system comprises at least 2 fans (5), one fan is a blower, the other fan is an exhaust fan, the blower is positioned at the bottom of the side wall of the inner cavity of the box body, and the exhaust fan is positioned at the top of the inner cavity of the box body;
each fan (5) is electrically connected with the control panel (13);
the compounding method comprises the following steps:
s1, preprocessing:
cutting a spacer fabric to be compounded with resin;
utilizing a stay (7) to expand the spacing space of the spacing fabric, and placing the spacing fabric on a lower supporting plate (8);
adjusting the telescopic support column (1) by using a control panel (13) to enable the upper pressure plate (6) to press the upper surface of the spacer fabric and apply a pressure of 1.2-2 MPa to the spacer fabric;
s2, dipping:
a vacuum pump (11) is started by using a control panel (13), the vacuum pump (11) vacuumizes the box body, and resin in the resin storage (4) is pumped into the spacer fabric through a resin guide pipe I (31); until the resin completely soaks the spacing fabric, a valve at a liquid outlet of the resin storage (4) is closed by using a control panel (13);
s3, thermosetting:
turning on the heater (2) by means of a control panel (13);
in the step S2, heating the resin-impregnated spacer fabric to 110-130 ℃ at a heating rate of 1-2 ℃/min at room temperature under the condition that the whole process of the resin-impregnated spacer fabric is kept in a vacuum state, keeping heating at the temperature for 3-5 hours, and curing and molding the resin-impregnated spacer fabric to obtain a spacer fabric resin composite fabric;
s4, post-processing: the vacuum pump (11) and the heater (2) are closed through the control panel (13), and the fan (5) is turned on; and opening the box door, and taking out the composite fabric after the temperature of the inner cavity of the box body is reduced to room temperature.
2. The method of claim 1, wherein the high performance fiber spacer fabric is compounded with resin by:
and (3) under the condition that the whole process of the spacing fabric impregnated with the resin in the step S3 is kept in a vacuum state, heating to 120 ℃ at the room temperature at the heating rate of 1.5 ℃/min, keeping heating at the temperature for 4 hours, and curing and molding the spacing fabric impregnated with the resin to obtain the spacing fabric resin composite fabric.
3. The method of claim 2, wherein the high performance fiber spacer fabric is compounded with resin, and wherein:
the upper pressing plate (6) is provided with at least one flow guide hole (61) penetrating through the upper pressing plate (6), and the lower surface of the upper pressing plate (6) is also provided with at least one flow guide groove (62);
a resin conduit I (31) communicated with the resin storage (4) passes through the diversion hole (61) and is communicated with the placing cavity (100);
the lower supporting plate (8) is a flat box body without a cover and consists of a lower supporting plate bottom plate and 4 lower supporting plate side walls; the bottom plate of the lower supporting plate is provided with a liquid collecting groove (101), and the bottom of the liquid collecting groove (101) is provided with a drain hole (81) penetrating through the bottom plate of the lower supporting plate;
a resin conduit II (32) communicated with the resin collector (10) passes through the emptying hole (81) and is communicated with the placing cavity (100);
and in the step S2, after the resin completely soaks the spacer fabric, the redundant resin enters the liquid collecting tank (101) and then enters the resin collector (10) through the emptying hole (81) and the resin conduit II (32) in sequence for recycling.
4. The method for compounding the high-performance fiber spacer fabric with the resin as claimed in any one of claims 1 to 3, wherein:
the pressure sensor (14) is a telescopic pressure sensor which is matched with the height of the spacer fabric;
a pressure head (15) which is matched with the pressure sensor (14) to work is arranged on the lower surface of the upper pressure plate (6);
the top of the pressure head (15) is fixedly connected with the lower surface of the upper pressure plate (6), and the bottom of the pressure head (15) is opposite to the pressure sensor (14).
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| CN201810470558.4A CN108749039B (en) | 2018-05-17 | 2018-05-17 | High-performance fiber spacer fabric and resin compounding device and method |
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| CN201810470558.4A CN108749039B (en) | 2018-05-17 | 2018-05-17 | High-performance fiber spacer fabric and resin compounding device and method |
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| CN108749039B true CN108749039B (en) | 2020-06-05 |
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| CN107253336A (en) * | 2011-08-30 | 2017-10-17 | 约翰逊控制技术公司 | A kind of method and a kind of decorative components for vehicle interior for being used to manufacture vehicle decorative component |
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| CN108749039A (en) | 2018-11-06 |
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