CN108017796A - A kind of prepreg and its manufacture method - Google Patents
A kind of prepreg and its manufacture method Download PDFInfo
- Publication number
- CN108017796A CN108017796A CN201610935630.7A CN201610935630A CN108017796A CN 108017796 A CN108017796 A CN 108017796A CN 201610935630 A CN201610935630 A CN 201610935630A CN 108017796 A CN108017796 A CN 108017796A
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- Prior art keywords
- resin
- prepreg
- glued membrane
- viscosity
- method described
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The present invention provides a kind of method for preparing prepreg, including：Resin is prepared, makes resin that there is the first viscosity and the first gel time；Resin is maintained second viscosity by heating, and resin is applied as resin glued membrane；Positive and negative two surfaces of resin glued membrane are contained and are dipped into fiber, by controlling impregnation temperature resin glued membrane is maintained the 3rd viscosity, and complete impregnation by heating roll-in, prepreg is made, the method provided by the invention that prepreg is prepared using non-autoclave curing, in the tow sides of resin glued membrane prepreg is prepared using fibre reinforcement, ways and means are impregnated with by improving, make obtained prepreg surface rich in fiber vent cap, discharge gas is easier in the curing process, reduce the porosity of product after being molded, improve the mechanical property of prepreg, and it can be molded in the case where vacuumizing oven conditions, processing cost can be greatly reduced, improve product quality.
Description
Technical field
The present invention relates to field of compound material, in particular to a kind of prepreg and its manufacture method.
Background technology
Prepreg with good mechanical property and chemical stability and with the prospect of good industrialized production, because
This, it is widely used in the field that electronic device etc. needs high reliability, particularly in absorbing material field.Prepreg is
With resin under conditions of stringent control impregnating continuous fibres or fabric, resin matrix and the composition of reinforcement is made, is system
Make the intermediate materials of composite material.
Powder prepreg method, refers to that toner is attached on fiber, by fusing, formed resin is discontinuous, fiber not
A kind of prepreg being thoroughly impregnated by resin.The method of other manufacture prepregs also has solution dipping method, refers to dissolve resin
In solvent, certain density solution is become, it is then that fibre bundle or fabric is molten by resin matrix at a predetermined rate
Liquid, makes it soak quantitative resin matrix, removes solvent by the method for heating again thereafter, ultimately forms prepreg.It is existing
The method for curing prepreg generally uses autoclave molding, but its is with high costs and limited by tank body size.
The content of the invention
A kind of method for manufacturing prepreg provided by the invention, solve existing prepreg is caused using non-autoclave curing
Porosity it is higher, the problem of mechanical property is relatively low.
A kind of method for manufacturing prepreg provided by the invention, including：Resin is prepared, makes resin that there is the first viscosity and the
One gel time；Resin is maintained second viscosity by heating, and resin is applied as resin glued membrane；By resin glued membrane just
Anti- two surfaces containing being dipped into fiber, by controlling impregnation temperature resin glued membrane is maintained the 3rd viscosity, and pass through heating
Impregnation is completed in roll-in, and prepreg is made.
In the above-mentioned methods, resin is prepared, it is 30~150Pa.s to make first viscosity of the resin at 70~80 DEG C, and
The first gel time at 120~140 DEG C is 60~180min.
In the above-mentioned methods, resin is heated to 50~100 DEG C, resin is maintained the second viscosity of 50~100Pa.s.
In the above-mentioned methods, using gluing machine, under the coating speed of 1~10m/s, implement resin being applied as resin glue
The step of film.
In the above-mentioned methods, by controlling rubber roller gap, the thickness control of resin glued membrane is made in the scope of 0.1mm to 2mm
It is interior.
In the above-mentioned methods, will impregnation temperature control in the range of 50 DEG C to 100 DEG C, make resin glued membrane maintain 10~
The 3rd viscosity of 50Pa.s.
In the above-mentioned methods, in step is impregnated with, the pressure for heating roll-in is 0.05MPa, 1~15m/s of impregnation.
In the above-mentioned methods, in obtained prepreg, the weight of resin is the 30%~50% of prepreg gross weight.
In the above-mentioned methods, resin includes epoxy resin, polyester resin, phenolic resin, cyanate ester resin, bismaleimide
Polyimide resin, melamine resin, furane resins, organic siliconresin or the one or more of polybutadiene kind combine.
In the above-mentioned methods, fiber include superhigh molecular weight polyethylene fibers, quartz fibre, aramid fiber, glass fibre,
One or more combinations in carbon fiber, polypropylene fibre, polyacrylonitrile fibre.
The prepreg that the above method is prepared.
The method provided by the invention for preparing prepreg, can be cured using non-autoclave, positive and negative the two of resin glued membrane
Face prepares prepreg using fibre reinforcement, and ways and means are impregnated with by improving, and makes obtained prepreg surface rich in fine
Vent cap is tieed up, is easier discharge gas in the curing process, reduces the porosity of product after shaping, improves the power of prepreg
Performance is learned, and can be molded in the case where vacuumizing oven conditions, processing cost can be greatly reduced, improves product quality.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the flow chart for being used to manufacture the method for prepreg according to embodiments of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's all other embodiments obtained, belong to what the present invention protected
Scope.
The method for manufacturing prepreg
The present invention proposes a kind of method for preparing prepreg, can be cured using non-autoclave, and Fig. 1 is real according to the present invention
Apply the flow chart for being used to manufacture the method for prepreg of example.
As shown in the step S101 of Fig. 1, resin is prepared, makes resin that there is the first viscosity and the first gel time.In the step
In rapid, resin includes epoxy resin, polyester resin, phenolic resin, cyanate ester resin, bimaleimide resin, melamine
Formaldehyde resin, furane resins, organic siliconresin or the one or more of polybutadiene kind combine.In this step, pass through
The formula of resin is adjusted, makes first viscosity with 30~150Pa.s of the resin at 70~80 DEG C and at 120~140 DEG C
There is down the first gel time of 60~180min.In this step, it can be added in resin formula and account for the 5% of resin quality
~10% curing agent, can also add some other processing aids as needed.
As shown in the step S103 of Fig. 1, resin is set to maintain second viscosity by heating, and resin is applied as resin glue
Film.In a preferred embodiment, resin is heated to 50~100 DEG C, resin is maintained the second viscosity of 50~100Pa.s, with
And using gluing machine, under the coating speed of 1~10m/s, resin is applied as resin glued membrane.In coating overshoots, pass through glue
Roller clearance control coating thickness makes its surface density meet the glue content requirement of prepreg, specifically, by controlling rubber roller gap to make
The thickness control of resin glued membrane is in the range of 0.1mm to 2mm.
As shown in the step 105 of Fig. 1, by positive and negative two surfaces of resin glued membrane containing being dipped into fiber, contained by control
Leaching temperature makes resin glued membrane maintain the 3rd viscosity, and completes impregnation by heating roll-in, and prepreg is made.Fiber is enhancing
Body, can include superhigh molecular weight polyethylene fibers, quartz fibre, aramid fiber, glass fibre, carbon fiber, polypropylene fibre,
One or more combinations in polyacrylonitrile fibre.In a preferred embodiment, model of the temperature control at 50 DEG C to 100 DEG C will be impregnated with
In enclosing, resin glued membrane is maintained the 3rd viscosity of 10~50Pa.s, and pressure be 0.05MPa, impregnation be 1~15m/
Under conditions of s, impregnation is completed by heating roll-in.In this step, it is pre- by controlling the ratio of resin glued membrane and fiber to control
The glue content of material is soaked, is made in final obtained prepreg, the weight of resin is the 30%~50% of prepreg gross weight.After winding
Obtain that the cured prepreg of non-autoclave mode can be used.Obtained prepreg surface is curing rich in fiber vent cap
During be easier discharge gas, reduce shaping after product porosity, can be molded in the case where vacuumizing oven conditions, Ke Yiji
The earth reduces processing cost, improves product quality.Solve existing prepreg using non-autoclave cure caused by porosity compared with
The problem of height, mechanical property is relatively low.
The method provided by the invention for preparing prepreg, can be cured using non-autoclave, positive and negative the two of resin glued membrane
Face prepares prepreg using fibre reinforcement, and ways and means are impregnated with by improving, and makes obtained prepreg surface rich in fine
Vent cap is tieed up, is easier discharge gas in the curing process, reduces the porosity of product after shaping, improves the power of prepreg
Performance is learned, and can be molded in the case where vacuumizing oven conditions, processing cost can be greatly reduced, improves product quality.
Embodiment 1
The content of epoxy resin, polyester resin and corresponding curing agent is adjusted, resin is had 90 at 70~80 DEG C
The first viscosity of~150Pa.s and first gel time at 120~140 DEG C with 60~100min, wherein curing agent
Content is the 5% of resin content.Resin is heated to 70~100 DEG C, resin is maintained the second viscosity of 50~70Pa.s, with
And using gluing machine, under the coating speed of 1m/s, resin is applied as resin glued membrane, by controlling rubber roller gap to make resin glue
The thickness control of film is in 0.1mm.By positive and negative two surfaces of resin glued membrane containing being dipped into quartz fibre, temperature control will be impregnated with
In the range of 50 DEG C, resin glued membrane is set to maintain the 3rd viscosity of 10~30Pa.s, and be 0.05MPa, be impregnated with speed in pressure
Spend under conditions of 8m/s, to complete impregnation by heating roll-in, prepreg being made, wherein, the weight of resin is prepreg gross weight
The 30% of amount.
Embodiment 2
The content of epoxy resin, polyester resin and corresponding curing agent is adjusted, resin is had 30 at 70~80 DEG C
The first viscosity of~90Pa.s and first gel time at 120~140 DEG C with 100~180min, wherein curing agent
Content is the 5% of resin content.Resin is heated to 50~70 DEG C, resin is maintained the second viscosity of 70~100Pa.s, with
And using gluing machine, under the coating speed of 10m/s, resin is applied as resin glued membrane, by controlling rubber roller gap to make resin
The thickness control of glued membrane is in 2mm.By positive and negative two surfaces of resin glued membrane containing being dipped into quartz fibre, temperature control will be impregnated with
In the range of 100 DEG C, resin glued membrane is set to maintain the 3rd viscosity of 30~50Pa.s, and be 0.05MPa, be impregnated with speed in pressure
Spend under conditions of 12m/s, to complete impregnation by heating roll-in, prepreg being made.Wherein, the weight of resin is prepreg gross weight
The 50% of amount.
Embodiment 3
The content of epoxy resin, polyester resin and corresponding curing agent is adjusted, resin is had 30 at 70~80 DEG C
The first viscosity of~90Pa.s and first gel time at 120~140 DEG C with 100~180min, wherein curing agent
Content is the 5% of resin content.Resin is heated to 50~70 DEG C, resin is maintained the second viscosity of 70~100Pa.s, with
And using gluing machine, under the coating speed of 5m/s, resin is applied as resin glued membrane, by controlling rubber roller gap to make resin glue
The thickness control of film is in 1mm.By positive and negative two surfaces of resin glued membrane containing being dipped into quartz fibre, impregnation temperature control is existed
In the range of 80 DEG C, make resin glued membrane maintain 30~50Pa.s the 3rd viscosity, and pressure for 0.05MPa, impregnation
Under conditions of 10m/s, impregnation is completed by heating roll-in, prepreg is made.Wherein, the weight of resin is prepreg gross weight
35%.
Embodiment 4
The content of epoxy resin, polyester resin and corresponding curing agent is adjusted, resin is had 30 at 70~80 DEG C
The first viscosity of~90Pa.s and first gel time at 120~140 DEG C with 100~180min, wherein curing agent
Content is the 5% of resin content.Resin is heated to 50~70 DEG C, resin is maintained the second viscosity of 70~100Pa.s, with
And using gluing machine, under the coating speed of 7m/s, resin is applied as resin glued membrane, by controlling rubber roller gap to make resin glue
The thickness control of film is in 1.5mm.By positive and negative two surfaces of resin glued membrane containing being dipped into quartz fibre, temperature control will be impregnated with
In the range of 60 DEG C, resin glued membrane is set to maintain the 3rd viscosity of 30~50Pa.s, and be 0.05MPa, be impregnated with speed in pressure
Spend under conditions of 15m/s, to complete impregnation by heating roll-in, prepreg being made.Wherein, the weight of resin is prepreg gross weight
The 40% of amount.
Embodiment 5
The content of epoxy resin, polyester resin and corresponding curing agent is adjusted, resin is had 30 at 70~80 DEG C
The first viscosity of~90Pa.s and first gel time at 120~140 DEG C with 100~180min, wherein curing agent
Content is the 10% of resin content.Resin is heated to 50~70 DEG C, resin is maintained the second viscosity of 70~100Pa.s,
And using gluing machine, under the coating speed of 4m/s, resin is applied as resin glued membrane, by controlling rubber roller gap to make resin
The thickness control of glued membrane is in 0.8mm.By positive and negative two surfaces of resin glued membrane containing being dipped into quartz fibre, temperature control will be impregnated with
System makes resin glued membrane maintain the 3rd viscosity of 30~50Pa.s, and be 0.05MPa, be impregnated with pressure in the range of 70 DEG C
Under conditions of speed is 1m/s, impregnation is completed by heating roll-in, prepreg is made.Wherein, the weight of resin is total for prepreg
The 30% of weight.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (11)
- A kind of 1. method for manufacturing prepreg, it is characterised in that including：Resin is prepared, makes the resin that there is the first viscosity and the first gel time；The resin is maintained second viscosity by heating, and the resin is applied as resin glued membrane；By positive and negative two surfaces of the resin glued membrane containing being dipped into fiber, by controlling impregnation temperature to make the resin glued membrane The 3rd viscosity is maintained, and impregnation is completed by heating roll-in, prepreg is made.
- 2. according to the method described in claim 1, it is characterized in that, prepare the resin, make the resin at 70~80 DEG C The first viscosity be 30~150Pa.s, and the first gel time at 120~140 DEG C is 60~180min.
- 3. according to the method described in claim 1, it is characterized in that, the resin is heated to 50~100 DEG C, make the resin Maintain the second viscosity of 50~100Pa.s.
- 4. according to the method described in claim 1, it is characterized in that, use gluing machine, under the coating speed of 1~10m/s, reality Apply the step of resin is applied as the resin glued membrane.
- 5. according to the method described in claim 4, it is characterized in that, by controlling rubber roller gap, make the thickness of the resin glued membrane Degree control is in the range of 0.1mm to 2mm.
- 6. according to the method described in claim 1, it is characterized in that, by the scope of the impregnation temperature control at 50~100 DEG C It is interior, the resin glued membrane is maintained the 3rd viscosity of 10~50Pa.s.
- 7. according to the method described in claim 1, it is characterized in that, it is impregnated with described in step, the pressure of the heating roll-in For 0.05MPa, 1~15m/s of impregnation.
- 8. according to the method described in claim 1, it is characterized in that, in the obtained prepreg, the weight of the resin For the 30%~50% of the prepreg gross weight.
- 9. according to the method described in claim 1, it is characterized in that, the resin includes epoxy resin, polyester resin, phenolic aldehyde tree Fat, cyanate ester resin, bimaleimide resin, melamine resin, furane resins, organic siliconresin or polybutadiene One or more combinations of resin kind.
- 10. according to the method described in claim 1, it is characterized in that, the fiber includes superhigh molecular weight polyethylene fibers, stone One or more combinations in English fiber, aramid fiber, glass fibre, carbon fiber, polypropylene fibre, polyacrylonitrile fibre.
- A kind of 11. prepreg that method according to any one of claim 1 to 10 is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610935630.7A CN108017796A (en) | 2016-11-01 | 2016-11-01 | A kind of prepreg and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610935630.7A CN108017796A (en) | 2016-11-01 | 2016-11-01 | A kind of prepreg and its manufacture method |
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| Publication Number | Publication Date |
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| CN108017796A true CN108017796A (en) | 2018-05-11 |
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| CN201610935630.7A Pending CN108017796A (en) | 2016-11-01 | 2016-11-01 | A kind of prepreg and its manufacture method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181903A (en) * | 2019-06-06 | 2019-08-30 | 江门建滔电子发展有限公司 | A kind of high-frequency high-speed copper-clad plate and preparation method thereof |
| CN110561648A (en) * | 2019-07-26 | 2019-12-13 | 中国航空工业集团公司济南特种结构研究所 | Preparation method of non-autoclave molding medium-temperature curing prepreg |
| CN110653965A (en) * | 2018-06-28 | 2020-01-07 | 山东江山纤维科技有限公司 | Manufacturing equipment and manufacturing process of continuous fiber reinforced prepreg yarns |
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| US20040062858A1 (en) * | 2001-12-18 | 2004-04-01 | Tetsuro Sato | Prepreg production method and prepeg production device and prepreg obtained by the production method and production method for insulating layer attached copper foil and insulating layer attached copper foil obtained by the production method |
| CN104842619A (en) * | 2015-05-06 | 2015-08-19 | 江苏恒神股份有限公司 | Prepreg manufacturing process of high-tenacity multilayer structure |
| CN105109068A (en) * | 2015-09-02 | 2015-12-02 | 江苏恒神股份有限公司 | Method for preparing presoak materials for forming non-hot-pressing tank |
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2016
- 2016-11-01 CN CN201610935630.7A patent/CN108017796A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040062858A1 (en) * | 2001-12-18 | 2004-04-01 | Tetsuro Sato | Prepreg production method and prepeg production device and prepreg obtained by the production method and production method for insulating layer attached copper foil and insulating layer attached copper foil obtained by the production method |
| CN104842619A (en) * | 2015-05-06 | 2015-08-19 | 江苏恒神股份有限公司 | Prepreg manufacturing process of high-tenacity multilayer structure |
| CN105109068A (en) * | 2015-09-02 | 2015-12-02 | 江苏恒神股份有限公司 | Method for preparing presoak materials for forming non-hot-pressing tank |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110653965A (en) * | 2018-06-28 | 2020-01-07 | 山东江山纤维科技有限公司 | Manufacturing equipment and manufacturing process of continuous fiber reinforced prepreg yarns |
| CN110181903A (en) * | 2019-06-06 | 2019-08-30 | 江门建滔电子发展有限公司 | A kind of high-frequency high-speed copper-clad plate and preparation method thereof |
| CN110561648A (en) * | 2019-07-26 | 2019-12-13 | 中国航空工业集团公司济南特种结构研究所 | Preparation method of non-autoclave molding medium-temperature curing prepreg |
| CN110561648B (en) * | 2019-07-26 | 2021-10-15 | 中国航空工业集团公司济南特种结构研究所 | Preparation method of non-autoclave molding medium-temperature curing prepreg |
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