CN105778425A - Preparation method for carbon fiber prepreg with low resin content - Google Patents
Preparation method for carbon fiber prepreg with low resin content Download PDFInfo
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- CN105778425A CN105778425A CN201610338427.1A CN201610338427A CN105778425A CN 105778425 A CN105778425 A CN 105778425A CN 201610338427 A CN201610338427 A CN 201610338427A CN 105778425 A CN105778425 A CN 105778425A
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- carbon fiber
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- mixed liquor
- resin content
- fiber 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
-
- 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 for carbon fiber prepreg with low resin content. The carbon fiber prepreg is prepared by taking epoxy resin, a curing agent, an accelerant, a defoaming agent and carbon fibers as raw materials. Low-viscosity and high-infiltration resin has very good infiltration characteristic on carob fibers; meanwhile, the defoaming agent is combined for further enhancing the high infiltration of the carbon fibers, and proper synergistic effect of the curing agent and the accelerant is supplemented, so that the resin content of the carbon fiber prepreg is reduced; and moreover, the preparation method for the carbon fiber prepreg with low resin content is simple, is high in efficiency, is low in cost, and is great in industrial production potential; and the carbon fiber prepreg has low resin content characteristic.
Description
Technical field
The present invention relates to field of polymer material preparing technology, the preparation method particularly relating to a kind of low resin content carbon fiber prepreg.
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 making prepreg cloth be because this is that resin is impregnated with the preliminary of carbon fiber, the reason of final impregnation it is only when formed product, carbon fiber prepreg is widely used in the fields such as fishing tackle, sports equipment, sports goods, Aero-Space, its modulus is all required that higher and resin content requires low by the goods in a lot of fields of its application at present, especially the application on fishing tackle and some sports goods, existing carbon fiber prepreg cannot meet requirement in this respect.
Therefore, the preparation of a kind of low resin content 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 preparation method that the present invention proposes a kind of low resin content carbon fiber prepreg after curing molding with relatively low resin content in prior art.
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 low resin content carbon fiber prepreg, it is prepared from epoxy resin, firming agent, defoamer, accelerator and carbon fiber for raw material, its epoxy resin is made up of liquid-state epoxy resin and solid epoxy resin, and concrete preparation process is as follows:
(1) liquid-state epoxy resin and solid epoxy resin are stirred at 80-90 DEG C, after mixing completely, obtain mixed liquor A；
(2) adding defoamer in the mixed liquor A obtained to step (1), after stirring, obtain mixed liquid B at 70-80 DEG C, wherein mixed liquor A is 100:1-100:5 with the mass ratio of defoamer；
(3) adding firming agent in the mixed liquid B obtained to step (2), after stirring, obtain mixed liquor C at 70-80 DEG C, wherein mixed liquid B is 100:3-100:8 with the mass ratio of firming agent；
(4) adding accelerator in the mixed liquor C obtained to step (3), after stirring, obtain mixed liquor D at 70-80 DEG C, 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 being obtained low resin content carbon fiber prepreg by gluing and with preimpregnated process, after preparation, at 35 DEG C, standing can use for 2-5 days, and wherein the mass ratio of mixed liquor D and carbon fiber is 1:1-1:5.
Further, described liquid-state epoxy resin is 10:1-5:2 with the mass ratio of solid epoxy resin.
Further, described liquid-state epoxy resin is bisphenol A-type 128 or E51.
Further, described solid epoxy is bisphenol A-type 901 or E20.
Further, described carbon fiber is T300 or T700.
Further, described firming agent is the one in dicyandiamide 100S, 100SF and DDA-5.
Further, described accelerator is the one in two ureas U-24M, UR300, UR500.
Further, the viscosity of described mixed liquor D is 1000-10000cps.
Further, gluing and preimpregnated process in described step (5) are specially and are placed in glue spreader by mixed liquor D, the thickness of glued membrane or the surface density of glued membrane is detected by infrared ray instrument, by coldplate reduce glued membrane temperature, reduce its state of cure, prepare glued membrane used by prepreg；Again above-mentioned glued membrane is drawn from the upper and lower glued membrane roller of prepreg machine, and form sandwich structure with high modulus carbon fiber, pass sequentially through several groups of hot-pressing rollers, resin matrix is made to melt, in fiber embedded resin matrix, cooling reduces prepreg temperature, finally carries out trimming, covers PE film, rolling, prepares low resin content carbon fiber prepreg.
Beneficial effect: the preparation method of a kind of low resin content carbon fiber prepreg provided by the invention, with epoxy resin, firming agent, accelerator, defoamer and carbon fiber are that raw material is prepared from, based on low viscosity, carbon fiber is had the characteristic of well infiltration by high infiltration resin itself, use in combination with defoamer further enhancing the high wetting property to carbon fiber, it is aided with suitable firming agent and accelerator synergism again, this composite is made in use to show the imbibition characteristic that carbon fiber is good, the carbon fiber prepreg of low resin content can be prepared, and the preparation method of the low resin content carbon fiber prepreg of the present invention is simple, efficiency is high, cost is low, industrial production potential is huge, its goods have the characteristic of low resin content.
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 low resin content carbon fiber prepreg, is prepared from epoxy resin, firming agent, accelerator, defoamer and carbon fiber for raw material, and its epoxy resin is made up of liquid-state epoxy resin and solid epoxy resin, and concrete preparation process is as follows:
(1) 80kg liquid-state epoxy resin bisphenol A-type 128 and 20kg solid epoxy resin bisphenol A-type 901 are placed in the reactor with vacuum equipment of 500L, at 80-90 DEG C, stir 30min, after mixing completely, obtain mixed liquor A；
(2) mixed liquor A obtained to step (1) adds 2kg defoamer A530, at 70-80 DEG C, stir 30min, after stirring, obtain mixed liquid B；
(3) mixed liquid B obtained to step (2) adds 5kg firming agent 100S, after stirring 30min at 70-80 DEG C, obtain mixed liquor C；
(4) adding 0.8kg accelerator UR500 in the mixed liquid B obtained to step (3), after stirring 10min, obtain mixed liquor D at 70-80 DEG C, the viscosity of mixed liquor D is 1000-10000cps；
(5) taking above-mentioned mixed liquor D sample and carry out mechanical strength test, sample casts in and carries out on stainless steel mould, and 160 DEG C solidify one hour, the bending strength obtaining epoxy resin poured body after the demoulding reaches 120Mpa, hot strength 65Mpa, mechanical strength is qualified, can carry out next step technique:
Mixed liquor D is placed in glue spreader, is detected the surface density of the thickness of glued membrane or glued membrane by infrared ray instrument, by coldplate reduce glued membrane 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 form sandwich structure with carbon fiber T700, wherein the mass ratio of mixed liquor D and carbon fiber is 1:1-1:5, pass sequentially through several groups of hot-pressing rollers, resin matrix is made to melt, in carbon fiber T700 embedded resin matrix, cooling reduces prepreg temperature, finally carry out trimming, cover PE film, rolling, prepare the carbon fiber prepreg of 20% resin content, just the carbon fiber prepreg resin viscosity of the low resin content of preparation is too low, easily touch with one's hand and be not easy to operative, within 4-5 days, can use it is thus desirable to stand at 35 DEG C.
Embodiment 2:
The preparation method of a kind of low resin content carbon fiber prepreg, is prepared from epoxy resin, firming agent, accelerator, defoamer and carbon fiber for raw material, and its epoxy resin is made up of liquid-state epoxy resin and solid epoxy resin, and concrete preparation process is as follows:
(1) 80kg liquid-state epoxy resin bisphenol A-type 128 and 20kg solid epoxy resin bisphenol A-type 901 are placed in the reactor with vacuum equipment of 500L, at 80-90 DEG C, stir 30min, after mixing completely, obtain mixed liquor A；
(2) mixed liquor A obtained to step (1) adds 2kg defoamer A530, at 70-80 DEG C, stir 30min, after stirring, obtain mixed liquid B；
(3) mixed liquid B obtained to step (2) adds 5kg firming agent 100S, after stirring 30min at 70-80 DEG C, obtain mixed liquor C；
(4) adding 2kg accelerator UR500 in the mixed liquid B obtained to step (3), after stirring 10min, obtain mixed liquor D at 70-80 DEG C, the viscosity of mixed liquor D is 1000-10000cps；
(5) taking above-mentioned mixed liquor D sample and carry out mechanical strength test, sample casts in and carries out on stainless steel mould, and 160 DEG C solidify one hour, the bending strength obtaining epoxy resin poured body after the demoulding reaches 122Mpa, hot strength 66Mpa, mechanical strength is qualified, can carry out next step technique:
Mixed liquor D is placed in glue spreader, is detected the surface density of the thickness of glued membrane or glued membrane by infrared ray instrument, by coldplate reduce glued membrane 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 form sandwich structure with carbon fiber T700, wherein the mass ratio of mixed liquor D and carbon fiber is 1:1-1:5, pass sequentially through several groups of hot-pressing rollers, resin matrix is made to melt, in carbon fiber T700 embedded resin matrix, cooling reduces prepreg temperature, finally carry out trimming, cover PE film, rolling, prepare the carbon fiber prepreg of 20% resin content, just the carbon fiber prepreg resin viscosity of the low resin content of preparation is too low, easily touch with one's hand and be not easy to operative, within 2-3 days, can use it is thus desirable to stand at 35 DEG C.
The present embodiment, relative to adding the consumption of accelerator UR500 in embodiment 1 to reduce solidification temperature, shortens hardening time, improves production efficiency.
Should be understood that, above detailed description of the invention is merely to illustrate the present invention rather than restriction the scope of the present invention, after having read the present invention, the amendment of the various equivalent form of values of the present invention is all fallen within the application claims limited range by those skilled in the art.
Claims (9)
1. the preparation method of one kind low resin content carbon fiber prepreg, it is characterized in that being prepared from epoxy resin, firming agent, defoamer, accelerator and carbon fiber for raw material, its epoxy resin is made up of liquid-state epoxy resin and solid epoxy resin, and concrete preparation process is as follows:
(1) liquid-state epoxy resin and solid epoxy resin are stirred at 80-90 DEG C, after mixing completely, obtain mixed liquor A；
(2) adding defoamer in the mixed liquor A obtained to step (1), after stirring, obtain mixed liquid B at 70-80 DEG C, wherein mixed liquor A is 100:1-100:5 with the mass ratio of defoamer；
(3) adding firming agent in the mixed liquid B obtained to step (2), after stirring, obtain mixed liquor C at 70-80 DEG C, wherein mixed liquid B is 100:3-100:8 with the mass ratio of firming agent；
(4) adding accelerator in the mixed liquor C obtained to step (3), after stirring, obtain mixed liquor D at 70-80 DEG C, 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 being obtained low resin content carbon fiber prepreg by gluing and with preimpregnated process, after preparation, at 35 DEG C, standing can use for 2-5 days, and wherein the mass ratio of mixed liquor D and carbon fiber is 1:1-1:5.
2. the preparation method of low resin content carbon fiber prepreg according to claim 1, it is characterised in that: the mass ratio of described liquid-state epoxy resin and solid epoxy resin is 10:1-5:2.
3. the preparation method of low resin content carbon fiber prepreg according to claim 1, it is characterised in that: described liquid-state epoxy resin is bisphenol A-type 128 or E51.
4. the preparation method of low resin content carbon fiber prepreg according to claim 1, it is characterised in that: described solid epoxy is bisphenol A-type 901 or E20.
5. the preparation method of low resin content carbon fiber prepreg according to claim 1, it is characterised in that: described carbon fiber is T300 or T700.
6. the preparation method of low resin content carbon fiber prepreg according to claim 1, it is characterised in that: described firming agent is the one in dicyandiamide 100S, 100SF and DDA-5.
7. the preparation method of low resin content carbon fiber prepreg according to claim 1, it is characterised in that: described accelerator is the one in two ureas U-24M, UR300, UR500.
8. the preparation method of low resin content carbon fiber prepreg according to claim 1, it is characterised in that: the viscosity of described mixed liquor D is 1000-10000cps.
9. the preparation method of low resin content carbon fiber prepreg according to claim 1, it is characterized in that: gluing and preimpregnated process in described step (5) are specially and are placed in glue spreader by mixed liquor D, the thickness of glued membrane or the surface density of glued membrane is detected by infrared ray instrument, by coldplate reduce glued membrane temperature, reduce its state of cure, prepare glued membrane used by prepreg；Again above-mentioned glued membrane is drawn from the upper and lower glued membrane roller of prepreg machine, and form sandwich structure with high modulus carbon fiber, pass sequentially through several groups of hot-pressing rollers, resin matrix is made to melt, in fiber embedded resin matrix, cooling reduces prepreg temperature, finally carries out trimming, covers PE film, rolling, prepares low resin content carbon fiber prepreg.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338427.1A CN105778425A (en) | 2016-05-20 | 2016-05-20 | Preparation method for carbon fiber prepreg with low resin content |
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| CN201610338427.1A CN105778425A (en) | 2016-05-20 | 2016-05-20 | Preparation method for carbon fiber prepreg with low resin content |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112358633A (en) * | 2020-10-23 | 2021-02-12 | 广州市聚欣盈复合材料科技有限公司 | Carbon cloth-epoxy resin composite material and preparation method and application thereof |
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| 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 |
| CN102464861A (en) * | 2010-11-18 | 2012-05-23 | 中国石油天然气集团公司 | Pipeline repairing carbon fiber composite material system and application 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 |
-
2016
- 2016-05-20 CN CN201610338427.1A patent/CN105778425A/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 |
| CN102464861A (en) * | 2010-11-18 | 2012-05-23 | 中国石油天然气集团公司 | Pipeline repairing carbon fiber composite material system and application 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112358633A (en) * | 2020-10-23 | 2021-02-12 | 广州市聚欣盈复合材料科技有限公司 | Carbon cloth-epoxy resin composite material and preparation method and application thereof |
| CN112358633B (en) * | 2020-10-23 | 2022-05-10 | 广州市聚欣盈复合材料科技股份有限公司 | Carbon cloth-epoxy resin composite material and preparation method and application thereof |
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Application publication date: 20160720 |
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