CN107839259A - A kind of microwave heating fiber pultrusion production system and production method - Google Patents
A kind of microwave heating fiber pultrusion production system and production method Download PDFInfo
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- CN107839259A CN107839259A CN201711009655.5A CN201711009655A CN107839259A CN 107839259 A CN107839259 A CN 107839259A CN 201711009655 A CN201711009655 A CN 201711009655A CN 107839259 A CN107839259 A CN 107839259A
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- equipment
- solidification equipment
- microwave
- microwave heating
- draw
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Classifications
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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
- B29C70/50—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
- B29C70/526—Pultrusion dies, e.g. dies with moving or rotating parts
-
- 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
- B29C70/528—Heating or cooling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a kind of microwave heating fiber pultrusion production system and production method, including creel, steeping vat, microwave heating equipment, solidification equipment and the draw-gear being arranged in order, fiber is under the draw of draw-gear, after getting off from creel, it is molded successively by steeping vat, microwave heating equipment and solidification equipment solidify afterwards；Wherein, mould is set inside the microwave heating equipment, and the material of mould is ceramic die or the plastic mould of liner quartz ampoule；The solidification equipment uses Electric heating and metal die.Increase microwave heating equipment before solidification equipment in the present invention to pre-process the fiber for being impregnated with resin, not only resin unnecessary in composite can be carried out to strike off recycling, improve the utilization rate of raw material, the gel process of resin can also be promoted, make composite just one-step forming.
Description
Technical field
The present invention relates to fibre reinforced composites forming field, and in particular to a kind of microwave heating fiber pultrusion production system
System and production method.
Technical background
Fibre reinforced composites have many advantages, such as weight is small, performance is high, designability is strong, with the cost of raw material
Decline, the rapid development of nearly more than ten years fibre reinforced composites.Pultrusion is in fibre reinforced composites moulding process
One kind, have the advantages that production efficiency is high, fiber content is high, automaticity is high, can continuous production, therefore in composite
In field, using the composite proportion more and more higher of pultrude process preparation.
Pultrude process is that the fiber after impregnation is pulled in into curing molding in mould, solid after then being carried out in solidify afterwards case
Change, improve the curing degree and performance of composite product.Solidification equipment in pultrude process and solidify afterwards device portion big absolutely at present
Point all it is to take Electric heating, is simple to operate, stable temperature control the advantages of Electric heating, but after to impregnation
When fiber is heating and curing, there is the process of heat transfer, and it is solid the fiber after impregnation is taken place in the curing mold second half section
Change reaction, so in order that solidification is abundant, it is necessary to ensure enough hardening times by reducing pultrusion speed.
A kind of device and method of microwave heating fast pultrusion are disclosed in CN104552989A, the invention can improve pultrusion speed,
But all solidifications use microwave heating in this method, during pultrusion, front half section is resin heat absorption, when resin is inhaled
The heat of receipts starts to solidify after exceeding its activation energy, and most resin solidifications are the processes of an exothermic reaction, product
Size is bigger, and caloric value is bigger, and excessive heat concentrates on interiors of products, can form thermal stress, influences product properties, severe patient
It can make to exist due to gap of ftractureing caused by thermal stress inside product.So for large scale product, if the phase is still after hardening
So heated using microwave, the stability and Modulatory character to microwave heating propose higher requirement, current microwave heating skill
Art and cost can't fully meet the pultrusion production of large scale product.
The content of the invention
For the above-mentioned problems in the prior art, it is an object of the present invention to provide a kind of microwave heating fiber to draw
Production system is squeezed, the mode that the production system is combined using microwave heat pre-treatment with electrical heating solidification, improves pultrusion life
Speed is produced, suitable for the production of large scale product, while production stability and successional requirement can be met.
It is a further object to provide a kind of microwave to heat fiber pultrusion production method, is heated using above-mentioned microwave
Fiber pultrusion production system is produced.
In order to solve the above technical problems, the technical scheme is that：
A kind of microwave heats fiber pultrusion production system, including be arranged in order creel, steeping vat, microwave heating equipment,
Solidification equipment and draw-gear, fiber is under the draw of draw-gear, after getting off from creel, successively by steeping vat,
Microwave heating equipment and the shaping of solidification equipment solidify afterwards；
Wherein, mould is set inside the microwave heating equipment, and the material of mould is ceramic die or liner
The plastic mould of quartz ampoule；The solidification equipment uses Electric heating and metal die.
Microwave heating is and caused heat, so in the absence of the process of heat transfer, in solidification equipment by molecular vibration
Front end sets microwave heating equipment, can save the process of solidification heat transfer early stage, and after fiber enters mould, resin begins to add
Thermal gels, subsequently into the solidification equipment at rear portion, it can so improve 1.5-3 times of pultrusion speed.If without the microwave of front portion
Solidification equipment, while ensureing that heat passes to mold center from die edge, also to ensure the fiber after impregnation in a mold
There is time enough curing molding, so require to reduce pultrusion speed, and then reduce production efficiency.
The Electric heating and metal die that solidification equipment uses, start curing exotherm after resin gel, and pulling force increases
Greatly, the heating status for the control product that can be more stablized using Electric heating, bigger drawing can be born using metal die
Power.The hardness of metal die is high, can not only improve the life-span of mould, can also improve the surface quality of product, and what is reached adds
Hot temperature is also higher, is not in quenching rupture and broken situation.
Microwave heating equipment is used in solidification equipment front end, can also improve the recovery utilization rate of resin.Fiber enters in a subtle way
Before the mould of Wave heating device, can at mould mouth by it is unnecessary it is resin extruded come, due in traditional pulltrusion device, mould
Mouth is consistent with the heating-up temperature of mould inside setting, and the resin extruded at mould mouth is heated, so having opened
Begin by heat cure, it is impossible to which recovery uses.And would not exist in the front end of solidification equipment increase microwave heating equipment such
Problem, ceramics and plastics are all the non-conductors of heat, and the temperature at mould mouth is less than the temperature of heating setpoint, so in mould
The resin extruded at mouthful is not heated, is had not occurred solidification phenomenon, can be recycled.
Preferably, the material of the plastic mould is polyethylene, polypropylene, makrolon or polytetrafluoroethylene (PTFE).
Preferably, the solidification equipment includes preceding solidification equipment and solidify afterwards device.
Using preceding solidification equipment and solidify afterwards device, composite is solidified stage by stage, by adjusting each stage
The parameter that is heating and curing, the curing degree and performance of composite can be improved.
It is further preferred that the inner surface of the metal die is coated with coating.
The hardness of metal die inner surface can be improved by way of plating coating, while improving the life-span of mould,
Improve the surface quality of composite product.
Preferably, the curing mold length of the solidification equipment is the 10- of the length of the mould of microwave heating equipment
20 times.
The effect of microwave heating equipment in the present invention is to promote resin unnecessary in resin gel and recovery composite,
Composite is pre-processed, rather than plays main be heating and curing to composite.Through removal Excess resin and
Composite after gel can be heating and curing on the premise of with higher pultrusion speed, improve the recovery profit of resin
With rate and pultrusion production efficiency.
A kind of microwave heats fiber pultrusion production method, comprises the following steps：
Fiber on creel is located in advance by steeping vat impregnation, microwave heating equipment successively under the draw of draw-gear
Manage after being heating and curing with solidification equipment, the composite being molded.
Preferably, the design temperature of the steeping vat is 35-45 DEG C.Under the temperature conditionss, required thermosetting resin
Liquid in good fluidity, and there is good adhesion property, be advantageous to the impregnation to fiber.
Preferably, the heating frequency of the microwave heating equipment is 1000MHZ.Under the heating frequency, it is possible to increase multiple
The curing degree and performance of condensation material.
Preferably, the solidification equipment includes preceding solidification equipment and solidify afterwards device, and preceding solidification equipment is divided into three warm areas,
The temperature of three warm areas is followed successively by 140-155 DEG C, 165-175 DEG C and 185-195 DEG C, and solidify afterwards device is divided into two warm areas, and two
The temperature of individual warm area is followed successively by 195-205 DEG C and 175-185 DEG C.
Preferably, it is 30cm that the length of three warm areas of the preceding solidification equipment, which is followed successively by,；Two of solidify afterwards device
The length of warm area is 120cm.
Preferably, pultrusion speed of the fiber under the draw of draw-gear is 950-1050mm/min.
Due to adding microwave heating equipment in pultrusion system, microwave heating equipment is located in advance to the fiber for being impregnated with resin
Reason, electrical heating solidification equipment are heating and curing to pretreated composite, can not only improve the pultrusion being heating and curing
Speed, the production efficiency of composite is improved, the curing degree and performance of composite can also be improved.
The present invention advantageous effects be：
Increase microwave heating equipment before solidification equipment in the present invention to pre-process the fiber for being impregnated with resin,
Resin unnecessary in composite can not only be carried out striking off recycling, improve the utilization rate of raw material, can also promote
Enter the gel process of resin, make composite just one-step forming.Electrical heating solidification equipment adds to pretreated composite
Heat cure, it is capable of the heating status of stability contorting product, while the inner surface of the metal die in electrical heating solidification equipment is plated and applied
Layer, the hardness on metal die surface is improved, and then improve the quality of product surface.
Due to the resin on composite in microwave heating equipment gel, after the gel and first composite wood of one-step forming
After material enters solidification equipment, pultrusion speed can be improved, and then improve production efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Wherein, 1- creels；2- steeping vats；3- microwave heating equipments；Solidification equipment before 4-；5- solidify afterwards devices；6- is drawn
Device.
Embodiment
With reference to specific embodiment, the invention will be further described.
As shown in figure 1, a kind of microwave heating fiber pultrusion production system, including the creel 1, steeping vat 2, micro- being arranged in order
Wave heating device 3, solidification equipment and draw-gear 6, fiber is under the draw of draw-gear 6, after getting off from creel 1,
Successively by steeping vat 2, microwave heating equipment 3 and the shaping of solidification equipment solidify afterwards；
Wherein, the inside of microwave heating equipment 3 sets mould, and the material of mould is ceramic die or liner
The plastic mould of quartz ampoule；Electrical heating block and metal die are set inside the solidification equipment.The material of the plastic mould is
Polyethylene, polypropylene, makrolon or polytetrafluoroethylene (PTFE).
The solidification equipment includes preceding solidification equipment 4 and solidify afterwards device 5, inside preceding solidification equipment 4 and solidify afterwards device 5
Electrical heating block and metal die are provided with, and coating is coated with the inner surface of metal die.Can be with by way of plating coating
The hardness of metal die inner surface is improved, improves the surface quality of composite product.
The length of the metal die of preceding solidification equipment 4 can select in the range of 600-1200mm, solidify afterwards device 5
The length of metal die can select in the range of 1000-1400mm, but should ensure that preceding solidification equipment 4 and solidify afterwards device
5 total length should be 10-20 times of the die length of microwave heating equipment 3.
Embodiment 1
By taking the carbon fiber reinforced epoxy resin-based composite core rod for producing 19mm diameters as an example, carbon fiber is that platform moulds 12k T700
Carbon fiber, epoxy-resin systems are E51 and anhydride curing agent forms.
Producing equipment such as Fig. 1 is rearranged, and 40 DEG C of 2 design temperature of steeping vat, the length of microwave heating equipment 3 is 60mm, Gu
It is 900mm that 4 length are put in makeup, and the length of solidify afterwards device 5 is 1200mm.
Immersed after carbon fiber is arranged under the traction of draw-gear 6 in steeping vat 2, subsequently into microwave heating equipment
Heated gel in 3, subsequently into curing molding in solidification equipment 4, enter back into and solidify afterwards are carried out in solidify afterwards device 5, improve multiple
The curing degree and performance of condensation material, microwave heating frequency are that 1000MHz solidification equipments are divided into three warm areas, the temperature of three warm areas
Respectively 150 DEG C, 170 DEG C and 190 DEG C, solidify afterwards device are divided into two warm areas, the temperature of two warm areas be respectively 200 DEG C and
180℃.Pultrusion speed is 1000mm/min.
Comparative example 1
Difference with embodiment 1 is, microwave heating equipment 3, other and embodiment 1 are not provided with comparative example 1
It is identical, pultrusion speed 600mm/min.
Comparative example 2
Difference with embodiment 1 is, electrically heated solidification equipment is replaced with into microwave in comparative example 1 is heating and curing dress
Put, the frequency of microwave heating is 2000MHz, same as Example 1, the pultrusion speed 500mm/min of others.If all use
Microwave heats, and after resin gel, although the frequency of microwave heating, power can control, resin structure heats with microwave
Bad control is shaken, easily produces the harmful effects such as overheat.
Above-mentioned although the embodiment of the present invention is described with reference to accompanying drawing, not to invention protection domain
Limitation, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not required to
Pay various modifications that creative work can make or deformation is still within the scope of the present invention.
Claims (10)
1. a kind of microwave heats fiber pultrusion production system, it is characterised in that：Including the creel, steeping vat, microwave being arranged in order
Heater, solidification equipment and draw-gear, fiber is under the draw of draw-gear, after getting off from creel, passes through successively
Cross steeping vat, microwave heating equipment and the shaping of solidification equipment solidify afterwards；
Wherein, mould is set inside the microwave heating equipment, and the material of mould is ceramic die or liner quartz
The plastic mould of pipe；The solidification equipment uses Electric heating and metal die.
2. microwave according to claim 1 heats fiber pultrusion production system, it is characterised in that：The material of the plastic mould
Matter is polyethylene, polypropylene, makrolon or polytetrafluoroethylene (PTFE).
3. microwave according to claim 1 heats fiber pultrusion production system, it is characterised in that：The solidification equipment includes
Preceding solidification equipment and solidify afterwards device.
4. microwave according to claim 1 heats fiber pultrusion production system, it is characterised in that：The metal die it is interior
Surface is coated with coating.
5. microwave according to claim 1 heats fiber pultrusion production system, it is characterised in that：The solidification equipment is consolidated
Change the length for the mould that die length is microwave heating equipment 10-20 times.
6. a kind of microwave heats fiber pultrusion production method, it is characterised in that：Comprise the following steps：
Fiber on creel under the draw of draw-gear successively by steeping vat impregnation, microwave heating equipment pretreatment and
After solidification equipment is heating and curing, the composite that is molded.
7. production method according to claim 6, it is characterised in that：The heating frequency of the microwave heating equipment is
1000MHZ。
8. production method according to claim 6, it is characterised in that：The solidification equipment is solid including preceding solidification equipment and afterwards
Makeup is put, and preceding solidification equipment is divided into three warm areas, and the temperature of three warm areas is followed successively by 140-155 DEG C, 165-175 DEG C and 185-
195 DEG C, solidify afterwards device is divided into two warm areas, and the temperature of two warm areas is followed successively by 195-205 DEG C and 175-185 DEG C.
9. production method according to claim 6, it is characterised in that：The length of three warm areas of the preceding solidification equipment according to
Secondary is 30cm, 30cm, 30cm；The length of two warm areas of solidify afterwards device is followed successively by 120cm, 120cm.
10. production method according to claim 6, it is characterised in that：Drawing of the fiber under the draw of draw-gear
It is 950-1050mm/min to squeeze speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009655.5A CN107839259A (en) | 2017-10-25 | 2017-10-25 | A kind of microwave heating fiber pultrusion production system and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009655.5A CN107839259A (en) | 2017-10-25 | 2017-10-25 | A kind of microwave heating fiber pultrusion production system and production method |
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| CN107839259A true CN107839259A (en) | 2018-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711009655.5A Pending CN107839259A (en) | 2017-10-25 | 2017-10-25 | A kind of microwave heating fiber pultrusion production system and production method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111558957A (en) * | 2020-06-18 | 2020-08-21 | 广州威的科技有限公司 | Razor head and razor |
| CN111572064A (en) * | 2020-04-27 | 2020-08-25 | 江苏神马电力股份有限公司 | Pultrusion device and technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1393756A (en) * | 1971-09-29 | 1975-05-14 | Koppers Co Inc | Tandem rf and die curing in pultrusion |
| CN1730270A (en) * | 2005-08-02 | 2006-02-08 | 中材科技股份有限公司 | Pultrusion method for thermoplastic composite material and forming die thereof |
| CN101935388A (en) * | 2010-09-16 | 2011-01-05 | 中国人民解放军国防科学技术大学 | Resin composite and application thereof in preparing composite material core |
| CN104552989A (en) * | 2015-01-23 | 2015-04-29 | 南京航空航天大学 | Equipment and method for preparing glass fiber composite material Z-Pin by virtue of microwave heating and quick pull-extrusion |
| CN105003209A (en) * | 2015-07-21 | 2015-10-28 | 山东大学 | Sucker rod with composite spiral abrasion-resistant layer, manufacturing device and manufacturing method |
-
2017
- 2017-10-25 CN CN201711009655.5A patent/CN107839259A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1393756A (en) * | 1971-09-29 | 1975-05-14 | Koppers Co Inc | Tandem rf and die curing in pultrusion |
| CN1730270A (en) * | 2005-08-02 | 2006-02-08 | 中材科技股份有限公司 | Pultrusion method for thermoplastic composite material and forming die thereof |
| CN101935388A (en) * | 2010-09-16 | 2011-01-05 | 中国人民解放军国防科学技术大学 | Resin composite and application thereof in preparing composite material core |
| CN104552989A (en) * | 2015-01-23 | 2015-04-29 | 南京航空航天大学 | Equipment and method for preparing glass fiber composite material Z-Pin by virtue of microwave heating and quick pull-extrusion |
| CN105003209A (en) * | 2015-07-21 | 2015-10-28 | 山东大学 | Sucker rod with composite spiral abrasion-resistant layer, manufacturing device and manufacturing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111572064A (en) * | 2020-04-27 | 2020-08-25 | 江苏神马电力股份有限公司 | Pultrusion device and technology |
| CN111558957A (en) * | 2020-06-18 | 2020-08-21 | 广州威的科技有限公司 | Razor head and razor |
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