CN105885352A - Preparation method of high-strength carbon fiber prepreg - Google Patents
Preparation method of high-strength carbon fiber prepreg Download PDFInfo
- Publication number
- CN105885352A CN105885352A CN201610338104.2A CN201610338104A CN105885352A CN 105885352 A CN105885352 A CN 105885352A CN 201610338104 A CN201610338104 A CN 201610338104A CN 105885352 A CN105885352 A CN 105885352A
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- carbon fiber
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- epoxy resin
- prepreg
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a preparation method of a high-strength carbon fiber prepreg. The high-strength carbon fiber prepreg is prepared by taking epoxy resin, a curing agent, an accelerant, an antifoaming agent, fumed silica and carbon fiber as raw materials; since the rigid nano particles of the fumed silica improve the strength of the epoxy resin, the high-strength carbon fiber prepreg has a perfect strength characteristic in a curing process; and meanwhile, in combination with the high wetting property of a certain amount of antifoaming agent against the carbon fiber and with the assisting synergistic effect of proper curing agent and accelerant, the carbon fiber prepreg shows excellent high strength and good wetting characteristic against the carbon fiber in an application process. Moreover, the preparation method of the high-strength carbon fiber prepreg has the advantages of simplicity, high efficiency, low cost and huge potential in industrial production; the product has good characteristics of low porosity and high strength; and the application range thereof in the product fields with relatively high requirements on strength is expanded.
Description
Technical field
The present invention relates to field of polymer material preparing technology, particularly relate to a kind of high-strength carbon fiber prepreg
Preparation method.
Background technology
Carbon fiber prepreg be also had by carbon fiber yarn, epoxy resin other etc. material, through film, hot pressing,
Cooling, overlay film, the composite of processes such as batch, have another name called carbon fibre initial rinse fabric；Why cry pre-
Leaching cloth is because the preliminary impregnation that this is resin and carbon fiber, is only the edge of final impregnation when formed product
Therefore, carbon fiber prepreg is widely used in the fields such as fishing tackle, sports equipment, sports goods, Aero-Space, mesh
The goods in a lot of fields of its application front are all the highest to its requirement of strength, and especially sports equipment also has Aero-Space
The application in field, existing carbon fiber prepreg cannot meet requirement in this respect.
Therefore, the preparation of a kind of high-strength carbon fiber prepreg is worth research.
Summary of the invention
Goal of the invention: in order to overcome the problem of the high gummosis that carbon fiber prepreg exists, the present invention in prior art
Propose the preparation method of a kind of high-strength carbon fiber prepreg after curing molding with higher intensity.
Technical scheme: in order to solve above-mentioned technical problem, the technical solution adopted in the present invention is:
The preparation method of a kind of high-strength carbon fiber prepreg, with epoxy resin, firming agent, accelerator, froth breaking
Agent, aerosil and carbon fiber are that raw material is prepared from, its epoxy resin by liquid-state epoxy resin and
Solid epoxy resin forms, and epoxy resin is 100:0.5-100:5 with the mass ratio of aerosil, specifically
Preparation process is as follows:
(1) liquid-state epoxy resin, solid epoxy resin and aerosil are stirred at 80-90 DEG C,
After mixing completely, obtain mixed liquor A；
(2) in the mixed liquor A that step (1) obtains, defoamer is added, after stirring at 70-80 DEG C,
Obtaining mixed liquid B, wherein mixed liquor A is 100:1-100:5 with the mass ratio of defoamer；
(3) in the mixed liquid B that step (2) obtains, firming agent is added, after stirring at 70-80 DEG C,
Obtaining mixed liquor C, wherein mixed liquid B is 100:3-100:8 with the mass ratio of firming agent；
(4) in the mixed liquor C that step (3) obtains, accelerator is added, after stirring at 70-80 DEG C,
Obtaining mixed liquor D, wherein mixed liquor C is 100:0.5-100:5 with the mass ratio of accelerator；
(5) above-mentioned mixed liquor D and carbon fiber are obtained high-strength carbon fiber by gluing and with preimpregnated process
Prepreg, wherein the mass ratio of mixed liquor D and carbon fiber is 1:1-1:4.
Being more highly preferred to, described liquid-state epoxy resin is 10:1-5:2 with the mass ratio of solid epoxy resin.
Being more highly preferred to, described liquid-state epoxy resin is bisphenol A-type 128 or E51.
Being more highly preferred to, described solid epoxy is bisphenol A-type 901 or E20.
Being more highly preferred to, described aerosil is R202.
Being more highly preferred to, described firming agent is the one in dicyandiamide 100S, 100SF and DDA-5.
Being more highly preferred to, described accelerator is the one in two ureas U-24M, UR300, UR500.
Being more highly preferred to, the viscosity of described mixed liquor D is 3000-30000cps.
Being more highly preferred to, gluing and preimpregnated process in described step (5) are specially and are placed in by mixed liquor D
In glue spreader, by thickness or the surface density of glued membrane of infrared ray instrument detection glued membrane, reduce glued membrane by coldplate
Temperature, reduce its state of cure, prepare glued membrane used by prepreg；Again by above-mentioned glued membrane from prepreg machine,
Lower glued membrane roller is drawn, and forms sandwich structure with high modulus carbon fiber, pass sequentially through several groups of hot-pressing rollers, make tree
Aliphatic radical body melts, and in fiber embedded resin matrix, cooling reduces prepreg temperature, finally carries out trimming, covers
PE film, rolling, prepare high-strength carbon fiber prepreg.
Being more highly preferred to, described carbon fiber is T700.
Beneficial effect: the preparation method of a kind of high-strength carbon fiber prepreg that the present invention provides, with epoxy resin,
Firming agent, accelerator, defoamer, aerosil and carbon fiber are that raw material is prepared from, based on gas phase
The raising to the intensity of epoxy resin of the rigidity nanoparticle of silicon dioxide, itself has very during solidification
Good strength characteristics, in combination with the consumption of the defoamer high wetting property to carbon fiber, then is aided with the most solid
Agent and accelerator synergism, make carbon fiber prepreg in use show excellence high intensity and
The imbibition characteristic good to carbon fiber, and the preparation method of the high-strength carbon fiber prepreg of the present invention is simple,
Efficiency height, low cost, industrial production potential are huge, and its goods have the excellent spy of low porosity, high intensity
Property, expand its range of application at the product scope higher to requirement of strength.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1:
The preparation method of a kind of high-strength carbon fiber prepreg, with epoxy resin, firming agent, accelerator, froth breaking
Agent, aerosil and carbon fiber are that raw material is prepared from, its epoxy resin by liquid-state epoxy resin and
Solid epoxy resin forms, and concrete preparation process is as follows:
(1) by 33kg liquid-state epoxy resin bisphenol A-type 128 and 67kg solid epoxy resin bisphenol A-type 901
And 1kg aerosil R202 is placed in the reactor with vacuum equipment of 500L, at 80-90 DEG C
Lower stirring 30min, after mixing completely, obtains mixed liquor A；
(2) in the mixed liquor A that step (1) obtains, add 2kg defoamer A530, stir at 70-80 DEG C
Mix 30min, after stirring, obtain mixed liquid B；
(3) in the mixed liquid B that step (2) obtains, add 5kg firming agent 100S, stir at 70-80 DEG C
After mixing 30min, obtain mixed liquor C；
(4) in the mixed liquid B that step (3) obtains, 0.8kg accelerator UR500 is added, at 70-80 DEG C
After lower stirring 10min, obtaining mixed liquor D, the viscosity of mixed liquor D is 300-30000cps；
(5) taking above-mentioned mixed liquor D sample and carry out mechanical strength test, it is enterprising that sample casts in stainless steel mould
OK, 160 DEG C solidify one hour, and the bending strength obtaining high strength epoxy resin pour mass after the demoulding reaches
140Mpa, hot strength 80Mpa, mechanical strength is qualified, can carry out next step technique:
Mixed liquor D is placed in glue spreader, by thickness or the surface density of glued membrane of infrared ray instrument detection glued membrane,
By coldplate reduce glued membrane temperature, reduce its state of cure, prepare glued membrane used by prepreg；Again by upper
State glued membrane to draw from prepreg machine upper and lower glued membrane roller, and form sandwich structure with carbon fiber T700, wherein
The mass ratio of mixed liquor D and carbon fiber is 1:1-1:4, passes sequentially through several groups of hot-pressing rollers, makes resin matrix melt,
In carbon fiber T700 embedded resin matrix, cooling reduce prepreg temperature, finally carry out trimming, cover PE film,
Rolling, prepares high-strength carbon fiber prepreg, and the intensity after the solidification of its carbon fiber prepreg has reached 5000MPa
Above.
Embodiment 2:
The preparation method of a kind of high-strength carbon fiber prepreg, with epoxy resin, firming agent, accelerator, froth breaking
Agent, aerosil and carbon fiber are that raw material is prepared from, its epoxy resin by liquid-state epoxy resin and
Solid epoxy resin forms, and concrete preparation process is as follows:
(1) by 33kg liquid-state epoxy resin bisphenol A-type 128 and 67kg solid epoxy resin bisphenol A-type 901
And 1kg aerosil R202 is placed in the reactor with vacuum equipment of 500L, at 80-90 DEG C
Lower stirring 30min, after mixing completely, obtains mixed liquor A；
(2) in the mixed liquor A that step (1) obtains, add 2kg defoamer A530, stir at 70-80 DEG C
Mix 30min, after stirring, obtain mixed liquid B；
(3) in the mixed liquid B that step (2) obtains, add 5kg firming agent 100S, stir at 70-80 DEG C
After mixing 30min, obtain mixed liquor C；
(4) in the mixed liquid B that step (3) obtains, 2kg accelerator UR500 is added, at 70-80 DEG C
After stirring 10min, obtaining mixed liquor D, the viscosity of mixed liquor D is 300-30000cps；
(5) taking above-mentioned mixed liquor D sample and carry out mechanical strength test, it is enterprising that sample casts in stainless steel mould
OK, 160 DEG C solidify one hour, and the bending strength obtaining high strength epoxy resin pour mass after the demoulding reaches
138Mpa, hot strength 79Mpa, mechanical strength is qualified, can carry out next step technique:
Mixed liquor D is placed in glue spreader, by thickness or the surface density of glued membrane of infrared ray instrument detection glued membrane,
By coldplate reduce glued membrane temperature, reduce its state of cure, prepare glued membrane used by prepreg；Again by upper
State glued membrane to draw from prepreg machine upper and lower glued membrane roller, and form sandwich structure with carbon fiber T700, wherein
The mass ratio of mixed liquor D and carbon fiber is 1:1-1:4, passes sequentially through several groups of hot-pressing rollers, makes resin matrix melt,
In carbon fiber T700 embedded resin matrix, cooling reduce prepreg temperature, finally carry out trimming, cover PE film,
Rolling, prepares high-strength carbon fiber prepreg, and the intensity after the solidification of its carbon fiber prepreg has reached 5000MPa
Above.
The present embodiment relative to embodiment 1 adding the consumption of accelerator UR500 to reduce solidification temperature, contracting
Short hardening time, improve production efficiency.
The preparation method of a kind of high-strength carbon fiber prepreg that the present invention provides, based on aerosil firm
Property the nanoparticle raising to the intensity of epoxy resin, itself there is during solidification good intensity special
Property, in combination with the consumption of the defoamer high wetting property to carbon fiber, then is aided with suitable firming agent and promotion
Agent synergism, makes carbon fiber prepreg in use show the high intensity and good to carbon fiber of excellence
Good imbibition characteristic, and the preparation method of the high-strength carbon fiber prepreg of the present invention is simple, efficiency is high, one-tenth
This is low, industrial production potential is huge, and its goods have the good characteristic of low porosity, high intensity, expand
It is in the range of application of the product scope higher to requirement of strength.
It should be pointed out that, that above detailed description of the invention is merely to illustrate the present invention rather than limits the model of the present invention
Enclosing, after having read the present invention, the amendment of the various equivalent form of values of the present invention is all fallen by those skilled in the art
In the application claims limited range.
Claims (10)
1. the preparation method of a high-strength carbon fiber prepreg, it is characterised in that with epoxy resin, firming agent,
Accelerator, defoamer, aerosil and carbon fiber are that raw material is prepared from, and its epoxy resin is by liquid
State epoxy resin and solid epoxy resin composition, epoxy resin with the mass ratio of aerosil is
100:0.5-100:5, concrete preparation process is as follows:
(1) liquid-state epoxy resin, solid epoxy resin and aerosil are stirred at 80-90 DEG C,
After mixing completely, obtain mixed liquor A；
(2) in the mixed liquor A that step (1) obtains, defoamer is added, after stirring at 70-80 DEG C,
Obtaining mixed liquid B, wherein mixed liquor A is 100:1-100:5 with the mass ratio of defoamer；
(3) in the mixed liquid B that step (2) obtains, firming agent is added, after stirring at 70-80 DEG C,
Obtaining mixed liquor C, wherein mixed liquid B is 100:3-100:8 with the mass ratio of firming agent；
(4) in the mixed liquor C that step (3) obtains, accelerator is added, after stirring at 70-80 DEG C,
Obtaining mixed liquor D, wherein mixed liquor C is 100:0.5-100:5 with the mass ratio of accelerator；
(5) above-mentioned mixed liquor D and carbon fiber are obtained high-strength carbon fiber by gluing and with preimpregnated process
Prepreg, wherein the mass ratio of mixed liquor D and carbon fiber is 1:1-1:4.
The preparation method of high-strength carbon fiber prepreg the most according to claim 1, it is characterised in that:
Described liquid-state epoxy resin is 10:1-5:2 with the mass ratio of solid epoxy resin.
The preparation method of high-strength carbon fiber prepreg the most according to claim 1, it is characterised in that:
Described liquid-state epoxy resin is bisphenol A-type 128 or E51.
The preparation method of high-strength carbon fiber prepreg the most according to claim 1, it is characterised in that:
Described solid epoxy is bisphenol A-type 901 or E20.
The preparation method of high-strength carbon fiber prepreg the most according to claim 1, it is characterised in that:
Described aerosil is R202.
The preparation method of high-strength carbon fiber prepreg the most according to claim 1, it is characterised in that:
Described firming agent is the one in dicyandiamide 100S, 100SF and DDA-5.
The preparation method of high-strength carbon fiber prepreg the most according to claim 1, it is characterised in that:
Described accelerator is the one in two ureas U-24M, UR300, UR500.
The preparation method of high-strength carbon fiber prepreg the most according to claim 1, it is characterised in that:
The viscosity of described mixed liquor D is 3000-30000cps.
The preparation method of high-strength carbon fiber prepreg the most according to claim 1, it is characterised in that:
Gluing and preimpregnated process in described step (5) are specially and are placed in glue spreader by mixed liquor D, by red
The outside line instrument detection thickness of glued membrane or the surface density of glued membrane, by coldplate reduce glued membrane temperature, reduce it
State of cure, prepares glued membrane used by prepreg；Again above-mentioned glued membrane is drawn from prepreg machine upper and lower glued membrane roller,
And form sandwich structure with high modulus carbon fiber, pass sequentially through several groups of hot-pressing rollers, make resin matrix melt, fiber
In embedded resin matrix, cooling reduces prepreg temperature, finally carries out trimming, covers PE film, rolling, prepares
High-strength carbon fiber prepreg.
The preparation method of high-strength carbon fiber prepreg the most according to claim 1, it is characterised in that:
Described carbon fiber is T700.
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| CN201610338104.2A CN105885352A (en) | 2016-05-20 | 2016-05-20 | Preparation method of high-strength carbon fiber prepreg |
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| CN201610338104.2A CN105885352A (en) | 2016-05-20 | 2016-05-20 | Preparation method of high-strength carbon fiber prepreg |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403043A (en) * | 2018-09-25 | 2019-03-01 | 石狮市鸿兴文体器材有限公司 | A kind of modified epoxy and preparation method thereof and carbon fibre initial rinse fabric |
| CN111793325A (en) * | 2020-06-08 | 2020-10-20 | 安徽福斯特渔具有限公司 | Preparation method of high-performance fiber composite material pre-impregnation liquid |
Citations (3)
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| CN101948609A (en) * | 2010-09-11 | 2011-01-19 | 汕头市骏码凯撒有限公司 | Black rubber and preparation method thereof |
| CN104945856A (en) * | 2015-07-14 | 2015-09-30 | 江苏兆鋆新材料股份有限公司 | High-transparency anti-yellowing epoxy resin composite material preparing method and application thereof |
| CN104974470A (en) * | 2015-07-14 | 2015-10-14 | 江苏兆鋆新材料股份有限公司 | Preparation method of high-heat-resistance high-strength epoxy resin composite material |
-
2016
- 2016-05-20 CN CN201610338104.2A patent/CN105885352A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948609A (en) * | 2010-09-11 | 2011-01-19 | 汕头市骏码凯撒有限公司 | Black rubber and preparation method thereof |
| CN104945856A (en) * | 2015-07-14 | 2015-09-30 | 江苏兆鋆新材料股份有限公司 | High-transparency anti-yellowing epoxy resin composite material preparing method and application thereof |
| CN104974470A (en) * | 2015-07-14 | 2015-10-14 | 江苏兆鋆新材料股份有限公司 | Preparation method of high-heat-resistance high-strength epoxy resin composite material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403043A (en) * | 2018-09-25 | 2019-03-01 | 石狮市鸿兴文体器材有限公司 | A kind of modified epoxy and preparation method thereof and carbon fibre initial rinse fabric |
| CN111793325A (en) * | 2020-06-08 | 2020-10-20 | 安徽福斯特渔具有限公司 | Preparation method of high-performance fiber composite material pre-impregnation liquid |
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Application publication date: 20160824 |