CN114434832A - Impregnation equipment and pultrusion device comprising same - Google Patents
Impregnation equipment and pultrusion device comprising same Download PDFInfo
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- CN114434832A CN114434832A CN202011216844.1A CN202011216844A CN114434832A CN 114434832 A CN114434832 A CN 114434832A CN 202011216844 A CN202011216844 A CN 202011216844A CN 114434832 A CN114434832 A CN 114434832A
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- template
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- 238000005470 impregnation Methods 0.000 title claims abstract description 40
- 239000000835 fiber Substances 0.000 claims abstract description 68
- 238000007598 dipping method Methods 0.000 claims abstract description 40
- 239000011347 resin Substances 0.000 claims abstract description 33
- 229920005989 resin Polymers 0.000 claims abstract description 33
- 239000000805 composite resin Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000003292 glue Substances 0.000 claims description 20
- 239000012530 fluid Substances 0.000 claims description 18
- 239000000428 dust Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 11
- 230000008595 infiltration Effects 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000003365 glass fiber Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 239000002131 composite material Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229920005749 polyurethane resin Polymers 0.000 description 4
- 238000009736 wetting Methods 0.000 description 4
- 125000001931 aliphatic group Chemical group 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 206010027146 Melanoderma Diseases 0.000 description 1
- -1 Polytetrafluoroethylene Polymers 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005009 epoxy-anhydride resin Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
-
- 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
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/525—Component parts, details or accessories; Auxiliary operations
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention relates to a dipping device, a pultrusion device comprising the dipping device and a pultrusion method using the dipping device. The impregnation equipment comprises an impregnation tank and a first preformed template arranged in the impregnation tank, wherein the position of the first preformed template in the impregnation tank is adjustable, and a plurality of first threading positioning holes are formed in the first preformed template. The impregnation equipment can enable the fibers to be unfolded in the impregnation tank, can ensure full impregnation and uniform tension of the fibers, and improves the resin replacement rate. When the pultrusion device is adopted to prepare the fiber reinforced resin composite material, the drafting force is stable, and the obtained finished product has good infiltration.
Description
Technical Field
The invention belongs to the field of composite material processing. In particular, the invention relates to a dipping apparatus and a pultrusion device comprising the same.
Background
The pultrusion process is a composite material forming process, and the basic process is a process of obtaining a section product by dipping, pre-forming template guiding, hot mold curing and cutting into a certain length according to the use requirement for reinforced fiber materials (such as glass fiber roving, glass fiber continuous felt, glass fiber surface felt and the like) under the traction of external force.
At present, the production of thermosetting resin-based composite materials mainly adopts an open impregnation way, namely, after fibers or fabrics or felts pass through an impregnation tank with a compression roller or a compression rod, the fibers impregnated with resin enter a heated mould for curing after being molded and extruded by a pre-forming template. During the impregnation process, the fiber impregnation should be complete and no dry areas should be present, since the presence of dry areas would cause defects in the composite. The viscosity of the resin system, the structure of the gum dipping tank and the gum dipping mode all have great influence on the fiber wetting degree. In the conventional pultrusion process, most of open impregnation tanks are only provided with one or a pair of impregnation rods/rollers, fibers in the tanks are densely distributed and are easy to gather, particularly for a high-viscosity resin system, the full impregnation of the resin system is difficult to ensure, and meanwhile, because the impregnation tracks of each strand of fibers are different and the tension is inconsistent, the instability of traction tension is easily caused, and the continuous production of products is influenced. Especially in high speed pultrusion production process, it is important to ensure stable tension. The dense arrangement of the fibers also causes the contact area with the resin to be reduced, the replacement rate of the resin is reduced, the retention time of redundant resin in a glue tank is too long, on one hand, waste is caused, and on the other hand, the viscosity is increased and even the resin is gelled due to the self reaction of the resin.
If a closed glue injection box glue dipping mode is adopted, on one hand, the soaking effect of fibers is poorer than that of an open type tank body for a high-viscosity system due to the narrow space inside the glue injection box, and on the other hand, the investment needs to be increased in the design of a glue injection machine and the glue injection box.
Due to the limitation of the dipping equipment, for a high-viscosity system, a volatile solvent is added to dilute the system from the perspective of the resin formula, so as to reduce the viscosity, but the problems of Volatile Organic Compound (VOC) emission and high porosity of a finished product are caused.
Furthermore, in conventional pultrusion processes, especially in the open dip mode, the temperature and humidity of the environment have a significant impact on the resin. For example, the conventional epoxy-anhydride resins and polyurethane resins tend to increase in viscosity due to moisture absorption and increase in ambient temperature, and thus have a short working period and a high bubble content in the final product, which may eventually lead to defects in the final product.
Therefore, there is a need in the art to develop a dipping apparatus capable of ensuring the complete wetting of the fiber by the high viscosity resin while reducing the influence of the environment on the resin system.
Disclosure of Invention
An object of the present invention is to provide a dipping apparatus capable of ensuring complete impregnation of fibers with a high viscosity resin while reducing the environmental impact on the resin system.
Another object of the present invention is to provide a pultrusion plant comprising the above impregnation apparatus.
Still another object of the present invention is to provide a pultrusion method using the above impregnation apparatus.
Thus, according to one aspect, the invention provides a gumming apparatus, characterized in that it comprises:
a glue dipping tank; and
the first preforming template is arranged in the glue dipping tank, a plurality of first threading positioning holes are formed in the first preforming template, and the aperture of each first threading positioning hole
4-8mm, and the hole center distance L between two adjacent holes is 8-16 mm.
According to another aspect, the present invention provides a pultrusion apparatus for producing a fiber reinforced resin composite, characterized by comprising:
a fiber frame;
the above-mentioned impregnation apparatus downstream of the fiber frame;
a second pre-forming template at the downstream of the gumming device, wherein a second threading positioning hole is arranged on the second pre-forming template, and the arrangement of the second threading positioning hole on the second pre-forming template is the same as that of the first threading positioning hole on the second pre-forming template;
a curing and forming device downstream of the second pre-forming template; and
a pulling device downstream of the curing and forming device.
According to yet another aspect, the present invention provides a pultrusion method for producing a fiber reinforced resin composite, characterized by comprising the steps of:
i) the fiber is made to pass through a first preforming template in the impregnation device and a second preforming template downstream of the impregnation device from a fiber frame through a first threading positioning hole and a second threading positioning hole in sequence so as to be impregnated by resin in the impregnation device, wherein the fiber enters the first preforming templateThe included angle between the front and rear fibers of the first yarn guide hole
A is in the range of 90-150 ℃;
ii) allowing the resin-impregnated fibers passing through the second pre-forming template to enter a curing device and curing and forming the fibers in the curing device to obtain a fiber reinforced resin composite material; and
iii) pulling the resulting fiber reinforced resin composite material away from the curing apparatus by a pulling apparatus.
The impregnation equipment can enable the fibers to be unfolded in the impregnation tank, can ensure full impregnation and uniform tension of the fibers, and improves the resin replacement rate. When the pultrusion device is adopted to prepare the fiber reinforced resin composite material, the drafting force is stable, and the obtained finished product has good infiltration.
Drawings
The present invention will be described and explained with additional specificity and detail through the use of the accompanying drawings in which like reference numerals refer to like elements throughout.
FIG. 1 is a schematic view of the structure of a gumming apparatus 1 according to an embodiment of the present invention; wherein, 11: a glue dipping tank; 12: a first pre-forming template; 13: a jacket; 14: a dust cover; 141: a vent hole; 142. 143: the end of the dust cover.
FIG. 2 is a schematic view of the first pre-formed template 12 of FIG. 1, wherein 11 is a dip tank; 12: a first pre-forming template; 121: the first threading positioning hole.
FIG. 3 is a schematic view of a composite pultrusion apparatus according to an embodiment of the present invention, wherein 1: infiltrating equipment; 2. 3: a fiber frame; 4: a second pre-forming template; 5: a curing device; 6: a pulling device; 7: a fiber-reinforced resin composite material.
Detailed description of the preferred embodiments
Some specific embodiments of the present invention will now be described for illustrative purposes, but not for limitation, with reference to the accompanying drawings.
With reference to fig. 1 and 2, according to one aspect, the invention provides a gumming apparatus 1, characterized in that it comprises:
a glue dipping tank 11; and
a first pre-forming template 12 disposed in the glue dipping tank 11, wherein the first pre-forming template 12 is provided with a plurality of first threading positioning holes 121, and the diameter of each first threading positioning hole 121 is equal to the diameter of the corresponding first threading positioning hole 121
4-8mm, and the hole center distance L between two adjacent holes is 8-16 mm.
The dipping tank is in an open design.
Preferably, the body of the dip tank 11 is trapezoidal, and more preferably, is an inverted isosceles trapezoid.
Preferably, the position of the first pre-forming template 12 within the dip tank 11 is adjustable.
For example, the first pre-forming die plate 12 may be moved up and down with respect to the dip tank 11, or may be moved in the fiber traveling direction with respect to the dip tank 11.
Preferably, a gap d of at least 1mm exists between the first pre-forming template 12 and the inner wall of the dip tank 11, so that the glue solution on both sides of the first pre-forming template 12 has better fluidity.
Before the impregnation, the first pre-forming template 12 may be fixed in the impregnation tank 11 by means of positioning bolts.
The first pre-formed template 12 may be made of a material such as Polytetrafluoroethylene (PTFE), High Density Polyethylene (HDPE), stainless steel, and ceramic bushings.
Preferably, the first threading positioning holes 121 are arranged in an i-shape.
In some embodiments, the diameter of the first threading alignment hole 121
5 mm, a transverse hole spacing L1 of 8.5 mm, and a longitudinal hole spacing L2 of 10 mm.
Preferably, the gumming apparatus 1 further comprises:
a jacket 13 disposed outside the dip tank 11 to contain a fluid for adjusting the temperature of the dip tank 11.
The fluid may be water or oil.
In some embodiments, the bottom of the jacket 13 is provided with at least one access passage in communication with the fluid bath to enable circulation of the fluid. The fluid bath may be connected to a temperature control device (not shown) to regulate the temperature of the fluid.
In some embodiments, the jacket 13 may be connected to a temperature control device (not shown) to regulate the temperature of the fluid within the jacket.
The person skilled in the art can control the temperature of the dip tank 11 by adjusting the temperature of the fluid, so as to adjust the viscosity of the glue (i.e. resin) in the dip tank 11, and ensure that the viscosity is appropriate and stable, for example, the viscosity increases during the operating time< 500mPa
s。
Preferably, the gumming apparatus 1 further comprises:
and the dustproof cover 14 is arranged above the impregnation tank 11, a vent hole 141 is arranged on the top or the side of the dustproof cover 14, and two end parts 142 and 143 of the dustproof cover are opened.
The fibres can enter and exit the dip tank 11 via the two ends 142, 143 of the dust cap 14.
Preferably, the dust cover (14) is removable.
When the ambient humidity is high (for example, greater than 60 RH%), the dust cap 14 may be installed, and dry inert gas may be introduced through the vent 141 to ensure that the resin in the dip tank 11 is not affected by moisture in the environment.
The inert gas may be nitrogen, helium, or the like.
Before the dipping step, the resin may be manually fed into the dipping tank 11, or the resin may be injected into the dipping tank 11 by a glue injector.
Referring to fig. 3, according to another aspect, the present invention provides a pultrusion apparatus for preparing a fiber reinforced resin composite, characterized by comprising:
fiber frames 2, 3;
the above-described impregnation apparatus 1 downstream of the fiber frame;
a second pre-forming template 4 at the downstream of the gumming device 1, wherein a plurality of second threading positioning holes 41 are arranged on the second pre-forming template 4, and the arrangement of the second threading positioning holes 41 on the second pre-forming template 4 is the same as that of the first threading positioning holes 121 on the second pre-forming template 12;
a curing and forming device 5 downstream of the second pre-forming template 4; and
a drawing device 6 downstream of the curing and forming device 5.
The pultrusion device of the invention is not only suitable for pultrusion of unidirectional fiber yarns, but also suitable for pultrusion carried out by unidirectional fiber yarns and fiber felts or fabrics. In the case of a fibre mat or fabric, a strip-shaped opening can be provided in the first preforming tool for its passage. The size of the elongated openings suitable for the passage of the fiber mat or fabric may be determined according to the size thereof.
The fibre frames 2,3, the curing and shaping device 5 and the pulling device 6 may be identical to those of pultrusion devices commonly used in the art and, therefore, will not be described in detail here.
The angle between the fibres before and after entering the first wire guiding hole 121 of the first pre-forming template 12 can be adjusted by adjusting the positions of the fibre holders 2,3, the first pre-forming template 12 and the second pre-forming template 4
A is in the range of 90-150 ℃.
Still referring to fig. 3, according to yet another aspect, the present invention provides a pultrusion method for producing a fiber reinforced resin composite characterized by the steps of:
i) the fibers are impregnated with the resin in the impregnation apparatus 1 by passing the fibers from the fiber frames 2,3 through a first preforming mold 12 in the impregnation apparatus 1 and a second preforming mold 4 downstream of the impregnation apparatus 1 via a first threading positioning hole 121 and a second threading positioning hole 41 in order, wherein an angle between the fibers before and after entering the first guiding hole 121 of the first preforming mold 12
A is in the range of 90-150 ℃;
ii) the resin impregnated fibers passing through the second pre-forming template 4 enter the curing device 5 and are cured and formed therein to obtain a fiber reinforced resin composite material 7; and
iii) pulling the resulting fibre reinforced resin composite material 7 away from the curing device 5 by means of a pulling device 6.
The process parameters in the individual steps can be adjusted by the person skilled in the art depending on the fibres and resins used.
When the ambient humidity is high (e.g., greater than 60 RH%), a dry inert gas (e.g., nitrogen or helium) may be introduced through the vent 141 to ensure that the resin in the dip tank 11 is not affected by the moisture in the environment.
When the viscosity of the resin is high, the temperature of the resin may be increased by the fluid in the jacket 13, thereby reducing the viscosity of the resin.
The descriptions of the various features in this application may be combined without contradiction to each other and fall within the scope of the claims of this application.
The terms "comprising" and "including" as used herein encompass the case where other elements not explicitly mentioned are also included or included and the case where they consist of the mentioned elements.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In the event that a definition of a term in this specification conflicts with a meaning commonly understood by those skilled in the art to which the invention pertains, the definition set forth herein shall govern.
Unless otherwise indicated, all numbers expressing quantities of ingredients, processing parameters, and so forth used in the specification and claims are to be understood as being modified by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth herein are approximations that can vary depending upon the desired properties to be obtained.
Examples
The conception, specific structure, and technical effects of the present invention will be further described with reference to the following embodiments so that those skilled in the art can fully understand the objects, features, and effects of the present invention. Those skilled in the art will appreciate that the embodiments herein are for illustrative purposes only and that the scope of the present invention is not so limited.
Example 1
Referring to fig. 1, the impregnation apparatus 1 includes:
a glue dipping tank 11;
a first pre-forming template 12 arranged in the glue dipping tank 11, wherein the position of the first pre-forming template 12 in the glue dipping tank 11 is adjustable and a plurality of first threading positioning holes 121 (aperture) arranged in an I shape are arranged on the first pre-forming template 12
5 mm, a transverse hole spacing L1 of 8.5 mm, a longitudinal hole spacing L2 of 10 mm);
a jacket 13 disposed outside the dip tank 11 to contain a fluid for adjusting the temperature of the dip tank 11, wherein the bottom of the jacket 13 is provided with at least one access passage (not shown) communicated with a fluid bath (not shown) for circulating the fluid, and the fluid bath is connected with a temperature control device (not shown) for adjusting the temperature of the fluid; and
and a dust cover 14 disposed above the dip tank 11, wherein a vent hole 141 is provided at the top of the dust cover 14, and both ends 142, 143 thereof are open.
Example 2
Referring to fig. 3, a pultrusion apparatus for preparing a fiber reinforced resin composite includes:
fiber frames 2, 3;
a dipping apparatus 1 downstream of the fibre frames 2,3, the dipping apparatus 1 being as described in example 1;
in the second preforming mold plate 4 downstream of the dipping apparatus 1, a plurality of second threading positioning holes 41 are provided on the second preforming mold plate 4, and the arrangement of the second threading positioning holes 41 on the second preforming mold plate 4 is the same as the arrangement of the first threading positioning holes 121 on the second preforming mold plate 12;
a curing and forming device 5 downstream of the second pre-forming template 4; and
a drawing device 6 downstream of the curing and forming device 5.
Example 3
In this example, a fiber reinforced resin composite was prepared using the pultrusion apparatus in example 2.
Referring to fig. 1 and 3, the dust cap 14 is not installed and the jacket 13 does not contain a fluid for adjusting the temperature of the dip tank.
Leading 194 bundles (2400tex) of glass fiber yarns out of the creels 2,3, sequentially passing the glass fiber yarns through a first threading positioning hole 121 and a second threading positioning hole 41 in the impregnation equipment 1 and a second preforming template 4 downstream of the impregnation equipment 1, and adjusting the positions of the first preforming template 12 and the second preforming template 4 so that the included angle between the fibers before and after entering the first threading positioning hole 121
A is 120 ℃. The dipping tank 11 was filled with an aliphatic polyurethane resin (Desmocomp AP200 from Corseka Corp., viscosity 3000 mPa)
s。
The resin-impregnated fibers passing through the second pre-form 4 are then introduced into the curing and molding apparatus 5 and cured therein to obtain the fiber reinforced resin composite material 7. The temperature of the curing and molding device 5 from the inlet to the outlet is controlled as follows: 105 ℃/200 ℃/220 ℃/220 ℃.
Finally, the obtained fiber reinforced resin composite material 7 is pulled away from the curing and molding apparatus 5 by a pulling apparatus 6 at a speed of 1m/min, and the obtained glass fiber reinforced resin composite material is cut into a desired length by a cutting device (not shown). It was observed that the finished product had a smooth surface, no dry yarn area and no black spot wetting well after the cross section was cut, the draft force of the tractor was stable, and the draft force value fluctuation was less than 10%.
Example 4
Referring to FIGS. 1 and 3 and to example 3, except that a dust cap 14 was installed on the dip tank 11 and an external circulating oil bath (not shown) was opened to feed oil into the jacket 13.
Leading 194 bundles (2400tex) of glass fiber yarns out of the creels 2,3, sequentially passing the same through a first pre-forming template 12 in the dipping apparatus 1 and a second pre-forming template 4 downstream of the dipping apparatus 1 via one end (mark 142) of the dust cover 14, a first threading positioning hole 121, one end (mark 143) of the dust cover 14, and a second threading positioning hole 41, and adjusting the positions of the first pre-forming template 12 and the second pre-forming template 4 such that the included angle between the fibers before and after entering the first threading positioning hole 121 of the first pre-forming template 12 is adjusted
A is 120 ℃. The temperature of the dipping tank 11 is increased to 50 ℃ by heating oil, and the viscosity of the aliphatic polyurethane resin in the dipping equipment 1 is 1000mPa
And s. The air vent 141 of the dust cover 14 is connected to a nitrogen source (not shown), and nitrogen is fed into the dip tank 11 through the air vent 141 to prevent the resin from contacting moisture in the air.
The resin impregnated fibers passing through the second pre-form template 4 are then fed into the curing and forming device 5 and cured therein to obtain the fiber reinforced resin composite material 7. The temperature of the curing device 5 from the inlet to the outlet is controlled as follows: 105 ℃/200 ℃/220 ℃/220 ℃.
Finally, the resulting fiber-reinforced resin composite material 7 was pulled away from the curing apparatus 5 by a pulling apparatus 6 at a speed of 1m/min, and the resulting glass fiber-reinforced resin composite material was cut into a desired length by a cutting device (not shown). The finished product was observed to have a smooth surface, no dry yarn area and no black spots after the cross section was cut, indicating good wetting, stable draw force of the tractor, and a draft value fluctuation of less than 10%.
Comparative example 1
This comparative example was conducted with reference to example 3, except that the first pre-form mold 12 provided in the dipping tank 11 was replaced with a presser bar, and the glass fiber yarn was dipped into the aliphatic polyurethane resin in the dipping tank 11 by the presser bar.
In the pultrusion process, the fibers are not fully soaked after leaving the gum dipping tank, so that the finished product is easy to be poorly soaked, and peeling and white spots occur.
The foregoing describes exemplary embodiments or examples of the present invention and is not intended to limit the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present application.
Claims (10)
1. A gumming apparatus (1), characterized in that it comprises:
a glue dipping tank (11); and
a first pre-forming template (12) arranged in the glue dipping tank (11), wherein a plurality of first threading positioning holes (121) are arranged on the first pre-forming template (12), and the aperture of each first threading positioning hole (121)
4-8mm, and the hole center distance L between two adjacent holes is 8-16 mm.
2. Gumming plant (1) as in claim 1, characterized in that said gumming tank (11) is trapezoidal.
3. Gumming plant (1) according to claim 1, characterized in that the position of said first preformed template (12) inside said gumming bath (11) is adjustable.
4. Gumming plant (1) according to claim 1, characterized in that a gap of at least 1mm exists between said first pre-shaped template (12) and the inner wall of the gumming bath (11).
5. The impregnation plant (1) according to any one of claims 1 to 3, further comprising:
a jacket (13) arranged outside the dip tank (11) to contain a fluid for adjusting the temperature of the dip tank (11).
6. Impregnation plant (1) according to claim 5, characterized in that the bottom of said jacket (13) is provided with at least one access passage communicating with a fluid bath to enable the circulation of the fluid.
7. The impregnation plant (1) according to any one of claims 1 to 3, further comprising:
the dust cover (14) is arranged above the glue dipping tank (11), the top or the side edge of the dust cover (14) is provided with a vent hole (141), and two end parts (142, 143) of the dust cover are open.
8. Gumming apparatus (1) as in claim 7, characterized in that said dust cover (14) is removable.
9. A pultrusion device for producing fiber-reinforced resin composite materials, characterized by comprising:
a fibre frame (2, 3);
a gumming apparatus (1) according to any one of claims 1 to 8 downstream of a fiber rack (2, 3);
a second pre-forming template (4) at the downstream of the gumming device (1), wherein a plurality of second threading positioning holes (41) are arranged on the second pre-forming template (4), and the arrangement of the second threading positioning holes (41) on the second pre-forming template (4) is the same as that of the first threading positioning holes (121) on the second pre-forming template (12);
-a curing and forming device (5) downstream of said second pre-forming template (4); and
a pulling device (6) downstream of the curing and forming device (5).
10. A pultrusion method for producing a fibre reinforced resin composite, characterised by the steps of:
i) the fibers are made to pass through a first preforming template (12) in the dipping device (1) and a second preforming template (4) at the downstream of the dipping device (1) from fiber frames (2,3) sequentially through a first threading positioning hole (121) and a second threading positioning hole (41) so as to be impregnated by resin in the dipping device (1), wherein an included angle between the fibers before and after entering a first wire guide hole (121) of the first preforming template (12)
A is in the range of 90-150 ℃;
ii) the resin impregnated fiber passing through the second pre-forming template (4) enters a curing device (5) and is cured and formed therein to obtain a fiber reinforced resin composite material (7); and
iii) pulling the resulting fibre-reinforced resin composite (7) away from the curing device (5) by means of a pulling device (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011216844.1A CN114434832A (en) | 2020-11-04 | 2020-11-04 | Impregnation equipment and pultrusion device comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011216844.1A CN114434832A (en) | 2020-11-04 | 2020-11-04 | Impregnation equipment and pultrusion device comprising same |
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| CN114434832A true CN114434832A (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011216844.1A Pending CN114434832A (en) | 2020-11-04 | 2020-11-04 | Impregnation equipment and pultrusion device comprising same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467110A (en) * | 2022-09-22 | 2022-12-13 | 浙江联洋先进材料有限公司 | Device and method for improving fiber wettability of pultruded composite material |
| TWI804438B (en) * | 2022-09-23 | 2023-06-01 | 安能複材科技股份有限公司 | Pultrusion mechanism for pultruding fiber sheet |
-
2020
- 2020-11-04 CN CN202011216844.1A patent/CN114434832A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467110A (en) * | 2022-09-22 | 2022-12-13 | 浙江联洋先进材料有限公司 | Device and method for improving fiber wettability of pultruded composite material |
| CN115467110B (en) * | 2022-09-22 | 2023-12-15 | 浙江联洋先进材料有限公司 | Device and method for improving fiber wettability by pultrusion of composite material |
| TWI804438B (en) * | 2022-09-23 | 2023-06-01 | 安能複材科技股份有限公司 | Pultrusion mechanism for pultruding fiber sheet |
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