CN102926203A - Sizing agent for emulsion type carbon fibers, a method for preparing the same and application - Google Patents
Sizing agent for emulsion type carbon fibers, a method for preparing the same and application Download PDFInfo
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- CN102926203A CN102926203A CN2012104477699A CN201210447769A CN102926203A CN 102926203 A CN102926203 A CN 102926203A CN 2012104477699 A CN2012104477699 A CN 2012104477699A CN 201210447769 A CN201210447769 A CN 201210447769A CN 102926203 A CN102926203 A CN 102926203A
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- sizing agent
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Abstract
The invention discloses sizing agent for emulsion type carbon fibers, a method for preparing the same and application, wherein the sizing agent is prepared by from 2 to 40% of epoxy resin, from 1 to 20% of carbonic ester, from 0 to 96.5% of water and from 0.5 to 15% of surface active agent. Because the sizing agent contains the carbonic ester, the carbonic ester and polycarbonate matrix resin in a carbon fiber composite have the similar or the same structure units after a carbon fiber polycarbonate (PC) polymer matrix composite is prepared by carbon fibers which are sized by the sizing agent, the carbon fibers and a sizing agent layer and the sizing agent layer and thermoplastic PC resins have strong interface bonding force, and the carbon fibers and the thermoplastic PC resins are effectively combined through a sizing agent transition connection layer to form an organic whole. The sizing agent for the emulsion type carbon fibers increases more than 20% of shear strength between existing carbon fiber composite layers, and guarantees the carbon fiber composite to have high whole performance.
Description
Technical field
The invention belongs to the carbon fiber production field, be specifically related to a kind of emulsion type carbon fiber sizing agent and its production and use.
Background technology
In carbon fibre reinforced composite, for using sizing agent as transition zone between the carbon fiber that strengthens and the matrix resin, sizing agent can connect carbon fiber well, can connect well matrix resin again, make carbon fibre reinforced composite become as a whole, have very strong overall performance.
Patent CN1318686C discloses a kind of carbon fiber sizing agent, this carbon fiber contains with sizing agent, (A) have at least the compound of an epoxy radicals in the molecule, (B) have with ammonium ion as the anionic surfactant to ion, (C) nonionic surface active agent.
But, use the thermoplas tic resin composite (CFRTP) that the carbon fiber after the above-mentioned carbon fiber sizing agent starching is made, epoxy resin in the sizing agent transition articulamentum and the Chemical bonding effect between carbon fiber are stronger, and and a little less than the Chemical bonding effect between the thermoplastic resin matrix, the connection function between carbon fiber and the thermoplastic resin matrix is just not strong yet on the whole.Thereby made thermoplastic carbon fiber resin composite materials interlaminar shear strength is less, and the overall performance of carbon fibre composite has been caused great adverse effect.
Summary of the invention
In order to overcome the less defective of carbon fibre composite interlaminar shear strength made from existing carbon fiber sizing agent, primary and foremost purpose of the present invention is to provide a kind of emulsion type carbon fiber sizing agent, sizing agent of the present invention can greatly improve the interlaminar shear strength of carbon fibre composite, guarantees that carbon fibre composite has higher overall performance.
The emulsion type carbon fiber that another object of the present invention is to provide above-mentioned is with the preparation method of sizing agent.
A further object of the present invention is the emulsion type carbon fiber that the provides above-mentioned purposes of sizing agent.
Purpose of the present invention is achieved through the following technical solutions:
A kind of emulsion type carbon fiber sizing agent, its raw materials comprises the composition of following mass percent:
Epoxy resin: 2-40%
Carbonic acid ester: 1-20%
Water: 0-96.5%
Surfactant: 0.5-15%.
Described epoxy resin refers to contain in the molecule compound of at least one epoxy radicals, a kind of in preferred bisphenol A type epoxy resin, bisphenol f type epoxy resin or the novolac epoxy resin.
Described carbonic acid ester refers to carbonic acid (H
2CO
3) two hydroxyls in the molecule (compound after the hydrogen atom OH) is partly or entirely replaced by alkyl (R, R '), its structure is suc as formula shown in I or the formula II; The preferred dimethyl carbonate of described carbonic acid ester and/or diphenyl carbonate.
Surfactant is the effect of playing emulsification, and described surfactant is anion surfactant and/or non-ionic surface active agent;
Described anion surfactant is organic ammonium (ammonia) salt and/or aminated compounds, and it contains suc as formula 1, the hydrophobic grouping shown in formula 2, formula 3 or the formula 4:
Formula 1
Formula 2
Formula 3
Formula 4
In formula 1, formula 2, formula 3 and the formula 4, R
1, R
2, R
3Be H or C
1-C
3The chain alkyl; R
4Be the divalent aliphatic alkyl; M is 1～3 integer.
Described non-ionic surface active agent is the polyalkylene oxide Addition on ethylene thing of senior alcohol ether type, the polyalkylene oxide Addition on ethylene thing of higher fatty acids type, polyalkylene oxide Addition on ethylene thing or the PO/EO block type polyethers of alkyl phenyl ether type, preferred polyethylene oxide alkyl ethers, polyethylene glycol oxide alkyl phenylate, polyoxyethylene fatty acid esters, polyethylene glycol oxide aliphatic acid amino ethers, polyol fatty acid ester, polyethylene glycol oxide polyol fatty acid ester, sucrose fatty ester, alkylolamides or polyoxygenated alkyl block virtue polymers.
The above-mentioned emulsion type carbon fiber preparation method of sizing agent may further comprise the steps:
Get surfactant and be added to the water, stir evenly; Add again epoxy resin, carbonic acid ester, stir 60-100min under the 500-1000r/min; Then under 5000-10000r/min, stir emulsification pretreatment 15-35min; Under 500-1000r/min, stir 15-25min at last, obtain the emulsion type carbon fiber sizing agent;
Above operation all is to carry out under 40-80 ℃.
Above-mentioned emulsion type carbon fiber can be used in the carbon fibre composite with sizing agent, connects carbon fiber and resin matrix as transition zone.
A kind of carbon fiber contains above-mentioned emulsion type carbon fiber sizing agent, and emulsion type carbon fiber is the 0.1-5% of carbon fiber gross mass with the quality of sizing agent.
A kind of carbon fibre composite contains above-mentioned carbon fiber;
Described carbon fibre composite optimization polycarbonate resin-based carbon fiber composite.
The present invention has following advantage and effect with respect to prior art:
With the carbon fiber after the sizing agent starching of the present invention, after making carbon fiber Merlon (PC) based composites, owing to containing carbonic acid ester in the sizing agent, these carbonic acid esters have similar or identical construction unit with matrix resin Merlon in the carbon fibre composite, thereby between carbon fiber and the sizing agent layer and between sizing agent layer and the thermoplasticity PC matrix resin stronger interface binding power is arranged all, carbon fiber is combined with thermoplasticity PC matrix resin effectively by sizing agent transition articulamentum, formed an organic whole, improved more than 20% with respect to existing its interlaminar shear strength of carbon fibre composite, guaranteed that carbon fibre composite has higher overall performance.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment, but embodiments of the present invention are not limited to this.
Embodiment 1
A kind of emulsion type carbon fiber sizing agent is prepared by following steps:
The surfactant of 0.5g (Japanese emulsifying agent company/Nikon you 707-SF) is added in the deionized water of 96.5g, and agitation as appropriate mixes it; Add the bisphenol A type epoxy resin of 2g, the dimethyl carbonate of 1g, the rotating speed with 1000r/min under 40 ℃ stirs 100min again; Then under 40 ℃ with the rotating speed high speed shear emulsification 35min of 10000r/min; Rotating speed with 1000r/min stirs 25min under 40 ℃ at last, namely gets the emulsion type carbon fiber sizing agent.
The structure of surfactant is as follows:
Japan emulsifying agent company/Nikon that 707-SF
Embodiment 2
A kind of emulsion type carbon fiber sizing agent is prepared by following steps:
With the surfactant of 1.5g (0.75g mitsubishi rayon/BPEO20SON, 0.75g mitsubishi rayon/SPEO120SON) add in the deionized water of 91g, agitation as appropriate mixes it; Add the bisphenol f type epoxy resin of 5g, the diphenyl carbonate of 2.5g, the rotating speed with 750r/min under 60 ℃ stirs 80min again; Then under 60 ℃ with the rotating speed high speed shear emulsification 25min of 7500r/min; Rotating speed with 750r/min stirs 20min under 60 ℃ at last, namely gets the emulsion type carbon fiber sizing agent.
The structure of surfactant is as follows:
Mitsubishi rayon/BPEO20SON
Mitsubishi rayon/SPEO120SON
Embodiment 3
A kind of emulsion type carbon fiber sizing agent is prepared by following steps:
The surfactant (1.5g polyethylene oxide alkyl ethers, 2.0g polyethylene glycol oxide alkyl phenylate) of 3.5g is added in the deionized water of 81.5g, and agitation as appropriate mixes it; Add the novolac epoxy resin of 10g, the carbonic acid ester of 5g (2.5g dimethyl carbonate, 2.5g diphenyl carbonate), the rotating speed with 500r/min under 60 ℃ stirs 60min again; Then under 60 ℃ with the rotating speed high speed shear emulsification 15min of 5000r/min; Rotating speed with 500r/min stirs 15min under 60 ℃ at last, namely gets the emulsion type carbon fiber sizing agent.
Embodiment 4
A kind of emulsion type carbon fiber sizing agent is prepared by following steps:
The surfactant (4g polyoxyethylene fatty acid esters, 4g polyethylene glycol oxide aliphatic acid amino ethers) of 8.0g is added in the deionized water of 62g, and agitation as appropriate mixes it; Add the bisphenol A type epoxy resin of 20g, the diphenyl carbonate of 10g, the rotating speed with 500r/min under 80 ℃ stirs 60min again; Then under 80 ℃ with the rotating speed high speed shear emulsification 15min of 5000r/min; Rotating speed with 500r/min stirs 15min under 80 ℃ at last, namely gets the emulsion type carbon fiber sizing agent.
Embodiment 5
A kind of emulsion type carbon fiber sizing agent is prepared by following steps:
The surfactant (6g Mitsui NPES3030P, 6g polyol fatty acid ester) of 12g is added in the deionized water of 43g, and agitation as appropriate mixes it; Add the bisphenol f type epoxy resin of 30g, the diphenyl carbonate of 15g, the rotating speed with 750r/min under 40 ℃ stirs 100min again; Then under 40 ℃ with the rotating speed high speed shear emulsification 35min of 7500r/min; Rotating speed with 750r/min stirs 25min under 40 ℃ at last, namely gets the emulsion type carbon fiber sizing agent.
The structure of surfactant is as follows:
Mitsui NPES3030P
Embodiment 6
A kind of emulsion type carbon fiber sizing agent is prepared by following steps:
The surfactant (5g Japan emulsifying agent company/Nikon you 723-SF, 5g produce chemical industrial company/FO180EO6SON, 5g polyethylene glycol oxide polyol fatty acid ester daily) of 15g is added in the deionized water of 25g, and agitation as appropriate mixes it; Add the bisphenol A type epoxy resin of 40g, the diphenyl carbonate of 20g, the rotating speed with 1000r/min under 80 ℃ stirs 80min again; Then under 80 ℃ with the rotating speed high speed shear emulsification 25min of 10000r/min; Rotating speed with 1000r/min stirs 20min under 80 ℃ at last, namely gets the emulsion type carbon fiber sizing agent.
The structure of surfactant is as follows:
Japan emulsifying agent company/Nikon that 723-SF
Daily output chemical industrial company/FO180EO6SON
Comparative Examples 1
A kind of emulsion type carbon fiber sizing agent is prepared by following steps:
The surfactant of 0.5g (Japanese emulsifying agent company/Nikon you 707-SF) is added in the deionized water of 96.5g, and agitation as appropriate mixes it; The bisphenol A type epoxy resin that adds again 2g, the rotating speed with 1000r/min under 40 ℃ stirs 100min; Then under 40 ℃ with the rotating speed high speed shear emulsification 35min of 10000r/min; Rotating speed with 1000r/min stirs 25min under 40 ℃ at last, namely gets the emulsion type carbon fiber sizing agent.
Comparative Examples 2
A kind of emulsion type carbon fiber sizing agent is prepared by following steps:
With the surfactant of 1.5g (0.75g mitsubishi rayon/BPEO20SON, 0.75g mitsubishi rayon/SPEO120SON) add in the deionized water of 91g, agitation as appropriate mixes it; The bisphenol f type epoxy resin that adds again 5g, the rotating speed with 750r/min under 60 ℃ stirs 80min; Then under 60 ℃ with the rotating speed high speed shear emulsification 25min of 7500r/min; Rotating speed with 750r/min stirs 20min under 60 ℃ at last, namely gets the emulsion type carbon fiber sizing agent.
Comparative Examples 3
A kind of emulsion type carbon fiber sizing agent is prepared by following steps:
The surfactant (1.5g polyethylene oxide alkyl ethers, 2.0g polyethylene glycol oxide alkyl phenylate) of 3.5g is added in the deionized water of 81.5g, and agitation as appropriate mixes it; The novolac epoxy resin that adds again 10g, the rotating speed with 500r/min under 60 ℃ stirs 60min; Then under 60 ℃ with the rotating speed high speed shear emulsification 15min of 5000r/min; Rotating speed with 500r/min stirs 15min under 60 ℃ at last, namely gets the emulsion type carbon fiber sizing agent.
Comparative Examples 4
A kind of emulsion type carbon fiber sizing agent is prepared by following steps:
The surfactant (4g polyoxyethylene fatty acid esters, 4g polyethylene glycol oxide aliphatic acid amino ethers) of 8.0g is added in the deionized water of 62g, and agitation as appropriate mixes it; The bisphenol A type epoxy resin that adds again 20g, the rotating speed with 500r/min under 80 ℃ stirs 60min; Then under 80 ℃ with the rotating speed high speed shear emulsification 15min of 5000r/min; Rotating speed with 500r/min stirs 15min under 80 ℃ at last, namely gets the emulsion type carbon fiber sizing agent.
Comparative Examples 5
A kind of emulsion type carbon fiber sizing agent is prepared by following steps:
The surfactant (6g Mitsui NPES3030P, 6g polyol fatty acid ester) of 12g is added in the deionized water of 43g, and agitation as appropriate mixes it; The bisphenol f type epoxy resin that adds again 30g, the rotating speed with 750r/min under 40 ℃ stirs 100min; Then under 40 ℃ with the rotating speed high speed shear emulsification 35min of 7500r/min; Rotating speed with 750r/min stirs 25min under 40 ℃ at last, namely gets the emulsion type carbon fiber sizing agent.
Comparative Examples 6
A kind of emulsion type carbon fiber sizing agent is prepared by following steps:
The surfactant (5g Japan emulsifying agent company/Nikon you 723-SF, 5g produce chemical industrial company/FO180EO6SON, 5g polyethylene glycol oxide polyol fatty acid ester daily) of 15g is added in the deionized water of 25g, and agitation as appropriate mixes it; The bisphenol A type epoxy resin that adds again 40g, the rotating speed with 1000r/min under 80 ℃ stirs 80min; Then under 80 ℃ with the rotating speed high speed shear emulsification 25min of 10000r/min; Rotating speed with 1000r/min stirs 20min under 80 ℃ at last, namely gets the emulsion type carbon fiber sizing agent.
Use respectively the carbon fiber after the sizing agent starching of embodiment, Comparative Examples to make the Merlon base carbon fiber composite material, measure the interlaminar shear strength (ILSS) of gained carbon fibre composite, list in the table 1.The detection method of composite interlayer shear strength is that JC/T 773-2010 fibre reinforced plastics short beam method is measured interlaminar shear strength.
Table 1 carbon fibre composite interlaminar shear strength
| The embodiment sequence number | 1 | 2 | 3 | 4 | 5 | 6 |
| Interlaminar shear strength/MPa | 88.35 | 87.63 | 87.85 | 88.92 | 88.61 | 88.55 |
| The Comparative Examples sequence number | 1 | 2 | 3 | 4 | 5 | 6 |
| Interlaminar shear strength/MPa | 71.35 | 70.27 | 70.78 | 71.86 | 71.65 | 71.48 |
All added carbonic acid ester among all embodiment, and all do not added in the Comparative Examples, all the other component ratios are identical.Can find out by table 1, add the sizing agent of carbonic acid ester, the Merlon base carbon fiber composite material that uses the carbon fiber after its starching to make, the mechanical properties such as its interlaminar shear strength have great increase.
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. emulsion type carbon fiber sizing agent, be characterised in that: its raw materials comprises the composition of following mass percent:
Epoxy resin: 2-40%
Carbonic acid ester: 1-20%
Water: 0-96.5%
Surfactant: 0.5-15%.
2. emulsion type carbon fiber sizing agent according to claim 1 is characterized in that: described epoxy resin is a kind of in bisphenol A type epoxy resin, bisphenol f type epoxy resin or the novolac epoxy resin.
3. emulsion type carbon fiber sizing agent according to claim 1, it is characterized in that: the structure of described carbonic acid ester is suc as formula shown in I or the formula II;
4. emulsion type carbon fiber sizing agent according to claim 1, it is characterized in that: described carbonic acid ester is dimethyl carbonate and/or diphenyl carbonate.
5. emulsion type carbon fiber sizing agent according to claim 1, it is characterized in that: described surfactant is anion surfactant and/or non-ionic surface active agent.
6. each described emulsion type carbon fiber of claim 1-5 is characterized in that may further comprise the steps with the preparation method of sizing agent:
Get surfactant and be added to the water, stir evenly; Add again epoxy resin, carbonic acid ester, stir 60-100min under the 500-1000r/min; Then under 5000-10000r/min, stir emulsification pretreatment 15-35min; Under 500-1000r/min, stir 15-25min at last, obtain the emulsion type carbon fiber sizing agent.
7. each described emulsion type carbon fiber sizing agent application in carbon fibre composite of claim 1-5.
8. carbon fiber, it is characterized in that: contain each described emulsion type carbon fiber sizing agent of claim 1-5, emulsion type carbon fiber is the 0.1-5% of carbon fiber gross mass with the quality of sizing agent.
9. a carbon fibre composite is characterized in that: contain carbon fiber claimed in claim 8.
10. carbon fibre composite according to claim 9, it is characterized in that: described carbon fibre composite is the polycarbonate resin base carbon fiber composite material.
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Cited By (1)
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| CN103161072A (en) * | 2013-03-26 | 2013-06-19 | 金发科技股份有限公司 | Sizing agent for emulsion type carbon fibers as well as preparation method and application thereof |
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Effective date of registration: 20151216 Address after: 510555 Guangdong city of Guangzhou province in the new Guangzhou knowledge city construction by nine Buddha Street No. 18 room 210 Patentee after: GUANGZHOU KINGFA CARBON FIBER NEW MATERIAL DEVELOPMENT CO., LTD. Address before: Ke Feng Lu Science City high tech Industrial Development Zone of Guangzhou City, Guangdong Province, No. 33 510663 Patentee before: Kingfa Technology Co., Ltd. Patentee before: Shanghai Kingfa Science and Technology Development Co., Ltd. |