CN112878055A - Preparation method of carbon fiber for building reinforcing carbon cloth - Google Patents
Preparation method of carbon fiber for building reinforcing carbon cloth Download PDFInfo
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- CN112878055A CN112878055A CN202011567461.9A CN202011567461A CN112878055A CN 112878055 A CN112878055 A CN 112878055A CN 202011567461 A CN202011567461 A CN 202011567461A CN 112878055 A CN112878055 A CN 112878055A
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- carbon fiber
- epoxy resin
- carbon
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- cloth
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 76
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 76
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000004744 fabric Substances 0.000 title claims abstract description 39
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000004593 Epoxy Substances 0.000 claims abstract description 28
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims abstract description 24
- 239000000839 emulsion Substances 0.000 claims abstract description 22
- 239000003822 epoxy resin Substances 0.000 claims abstract description 20
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 20
- 238000004513 sizing Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 3
- 239000011347 resin Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000003607 modifier Substances 0.000 claims description 14
- 239000003995 emulsifying agent Substances 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 9
- 239000002243 precursor Substances 0.000 claims description 9
- 238000003763 carbonization Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 6
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 claims description 2
- XUJLWPFSUCHPQL-UHFFFAOYSA-N 11-methyldodecan-1-ol Chemical compound CC(C)CCCCCCCCCCO XUJLWPFSUCHPQL-UHFFFAOYSA-N 0.000 claims description 2
- QXONIHMUSQFKJU-UHFFFAOYSA-N 2-(prop-1-enoxymethyl)oxirane Chemical compound CC=COCC1CO1 QXONIHMUSQFKJU-UHFFFAOYSA-N 0.000 claims description 2
- UUODQIKUTGWMPT-UHFFFAOYSA-N 2-fluoro-5-(trifluoromethyl)pyridine Chemical compound FC1=CC=C(C(F)(F)F)C=N1 UUODQIKUTGWMPT-UHFFFAOYSA-N 0.000 claims description 2
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 claims description 2
- 238000004945 emulsification Methods 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000614 phase inversion technique Methods 0.000 claims description 2
- 229950004959 sorbitan oleate Drugs 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 238000004132 cross linking Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003292 glue Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/55—Epoxy resins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
- D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
- D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/11—Compounds containing epoxy groups or precursors thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/40—Fibres of carbon
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Woven Fabrics (AREA)
Abstract
The invention discloses a preparation method of carbon fiber for building reinforcing carbon cloth. According to the invention, the carbon fiber with high tensile strength, small fuzzing amount, moderate stiffness and good interlaminar shear performance is prepared by improving the formula of the sizing agent on the surface of the fiber, and the carbon fiber is suitable for being applied to carbon cloth in the field of building reinforcement. The sizing agent used in the invention is multi-component waterborne bisphenol A epoxy resin emulsion, and is modified by a multi-functionality epoxy compound, so that the viscosity of the epoxy resin is reduced, and the reaction activity and the crosslinking density are improved; the epoxy equivalent of the solid component of the sizing agent emulsion is 250-500 g/Eq. The carbon fiber prepared by the method has excellent mechanical properties, the tensile strength is larger than or equal to 4500MPa, the modulus is larger than or equal to 230GPa, the fuzzing amount of the carbon fiber is smaller than or equal to 5mg/30m, and the stiffness is between 6 and 12 cm; the carbon fiber building reinforcing cloth is soft and has good resin wettability, the tensile strength of the carbon fiber reinforcing cloth is not less than 3400MPa, the interlaminar shear strength is not less than 45MPa, and the application requirements of the high-strength I-grade carbon fiber building reinforcing cloth are met.
Description
Technical Field
The invention relates to a preparation method of carbon fibers for building reinforcing carbon cloth, belonging to the technical field of preparation of high-performance and functionalized carbon fibers.
Background
The carbon fiber has the advantages of high strength, light weight, corrosion resistance and the like, the carbon fiber cloth is formed by selecting small tow carbon filaments and weaving the small tow carbon filaments by a weaving machine, and the carbon fiber cloth is widely applied to reinforcement and reinforcement works as a novel reinforcement material. The carbon fiber cloth with high tensile strength is pre-soaked with epoxy resin to form a composite reinforced material, and an epoxy resin adhesive is adhered to a structure to be reinforced along a stress direction or a direction vertical to a crack (seam), so that the carbon fiber bears tensile stress, and forms a new complex with an original structural material to bear the stress together, and the purpose of improving the bearing capacity of a building structure is achieved.
According to the use characteristics of carbon fibers in the field of building reinforcement, the carbon fibers are required to have less broken filaments, moderate stiffness and good wettability to epoxy resin. If the amount of the filaments and the stiffness are larger, on one hand, the weavability of the fibers is reduced, on the other hand, the construction process performance of the carbon cloth is influenced, the problems of poor (slow) wettability of the carbon cloth resin and bulge of the carbon cloth occur, and certain potential safety hazards are brought to the construction quality.
Disclosure of Invention
The invention provides a preparation method of carbon fiber for building reinforcement carbon cloth, aiming at meeting the requirements of carbon cloth technology and construction performance of the carbon fiber in the field of building reinforcement.
The technical scheme of the invention is realized as follows:
a preparation method of carbon fiber for building reinforcing carbon cloth specifically comprises the following steps:
a) preparing carbon fiber precursor, drafting and spinning through a polymer solution spinneret plate, and obtaining the carbon fiber precursor through washing at 30-50 ℃, water drafting at 60-80 ℃, oiling at 20-30 ℃, drying at 150-200 ℃, drafting by saturated steam at 0.3-0.6 MPa and drying by a hot roller at 120-190 ℃;
b) preparing carbon fibers, namely pre-oxidizing carbon fiber precursors at the temperature of 200-300 ℃, wherein the draft multiple is 0.95-1.0 time; the low-temperature carbonization temperature is 400-800 ℃, and the drafting multiple is 0.95-1.05 times; the high-temperature carbonization temperature is 1100-1500 ℃, and the drafting multiple is 0.95-1.0 times to obtain the carbon fiber.
And carrying out surface sizing treatment on the obtained carbon fiber by adopting multi-component water-based bisphenol A epoxy resin emulsion, wherein the content of a fiber sizing agent is controlled to be 0.6-1.2%.
The multi-component water-based bisphenol A epoxy resin emulsion comprises 100 parts by weight of bisphenol A epoxy resin, 10-35 parts by weight of emulsifier, 5-10 parts by weight of epoxy modifier and 100-300 parts by weight of deionized water.
The bisphenol A type epoxy resin is one or a combination of epoxy resin E51, epoxy resin E44 and epoxy resin E20; the emulsifier is one or more of isotridecanol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether and sorbitan oleate; the epoxy modifier is one or a combination of more of propenyl glycidyl ether, ethylene glycol diglycidyl ether and resorcinol diglycidyl ether.
The multi-component aqueous bisphenol A epoxy resin emulsion has an epoxy equivalent of a solid content of 250 to 500 g/Eq.
The preparation method of the multi-component water-based bisphenol A epoxy resin emulsion comprises the following specific steps:
firstly, 100 parts by weight of bisphenol A type epoxy resin is prepared, 5-10 parts by weight of epoxy modifier is slowly added and mixed, and the mixture is uniformly stirred under the heating condition; then, gradually adding 10-35 parts by weight of an emulsifier, and uniformly mixing and stirring; and finally, slowly pouring 100-300 parts by weight of deionized water for high-speed shearing emulsification, and reacting according to a phase inversion method to obtain the multi-component waterborne epoxy resin emulsion.
Compared with the prior art, the invention has the following remarkable advantages:
1. according to the invention, the adjustment of the epoxy equivalent of the sizing agent emulsion is used for optimally controlling the wool yarn amount and the stiffness of the fiber, and meanwhile, the epoxy compound modifier is introduced, so that the reaction activity and the crosslinking density of the sizing agent are improved; 2. the problems of poor wettability of carbon cloth and epoxy resin and low interlayer strength of carbon fibers in the field of building reinforcement are solved.
Detailed Description
The contents and technical solutions of the present invention are further illustrated by the following specific examples, which should not be construed as limiting the present invention. It is within the scope of the present invention to make simple modifications or alterations to the methods, procedures or conditions of the present invention without departing from the spirit of the invention.
The method is realized by the following steps:
step 1: preparing carbon fiber precursor, drafting and spinning through a polymer solution spinneret plate, washing with water at 35 ℃, water-drafting at 70 ℃, oiling at 25 ℃, drying at 175 ℃, drafting by saturated steam at 0.5MPa, and drying by hot rollers at 180 ℃ to obtain the carbon fiber precursor.
Step 2: preparing carbon fibers, namely pre-oxidizing carbon fiber precursors at 200-300 ℃, wherein the draft multiple is 0.95 times; the low-temperature carbonization temperature is 400-800 ℃, and the drafting multiple is 1.02 times; and obtaining the carbon fiber under the conditions that the high-temperature carbonization temperature is 1100-1500 ℃ and the drafting multiple is 0.98.
Example 1: 100 parts of bisphenol A epoxy resin, 20 parts of emulsifier, 5 parts of epoxy modifier and 125 parts of deionized water by weight, and the multi-component aqueous bisphenol A epoxy resin emulsion is prepared, wherein the epoxy equivalent of the solid component is 346 g/Eq. The carbon fiber contains 0.75 percent of glue, the tensile strength of the carbon fiber is 4756MPa, the tensile modulus is 232GPa, the fluffing amount is 2.5mg/30m, and the stiffness is 8.5 cm. The tensile strength of the carbon fiber reinforced cloth is 3834MPa, and the interlaminar shear strength is 47 MPa.
Example 2: 100 parts of bisphenol A epoxy resin, 25 parts of emulsifier, 10 parts of epoxy modifier and 135 parts of deionized water by weight, and the multi-component aqueous bisphenol A epoxy resin emulsion is prepared, wherein the epoxy equivalent of the solid component is 312 g/Eq. The carbon fiber contains 0.91 percent of glue, the tensile strength of the carbon fiber is 4889MPa, the tensile modulus is 231GPa, the fluffing amount is 1.8mg/30m, and the stiffness is 9 cm. The tensile strength of the carbon fiber reinforced cloth is 3976MPa, and the interlaminar shear strength is 48 MPa.
Example 3: 100 parts of bisphenol A epoxy resin, 20 parts of emulsifier, 10 parts of epoxy modifier and 130 parts of deionized water by weight, and the multi-component aqueous bisphenol A epoxy resin emulsion is prepared, wherein the epoxy equivalent of the solid component is 297 g/Eq. The carbon fiber contains 0.65 percent of glue, the tensile strength of the carbon fiber is 4823MPa, the tensile modulus is 231GPa, the fluffing amount is 3.1mg/30m, and the stiffness is 7 cm. The tensile strength of the carbon fiber reinforced cloth is 3878MPa, and the interlaminar shear strength is 50 MPa.
Comparative example 1: 100 parts of bisphenol A epoxy resin, 40 parts of emulsifier and 140 parts of deionized water by weight, and the multi-component aqueous bisphenol A epoxy resin emulsion is prepared, wherein the epoxy equivalent of the solid component is 532 g/Eq. The carbon fiber contains 1.11 percent of glue, the tensile strength of the carbon fiber is 4642MPa, the tensile modulus is 232GPa, the fluffing amount is 1.8mg/30m, and the stiffness is 13 cm. The tensile strength of the carbon fiber reinforced cloth is 3677MPa, and the interlaminar shear strength is 43 MPa.
Comparative example 2: 100 parts of bisphenol A epoxy resin, 40 parts of emulsifier, 3 parts of epoxy modifier and 143 parts of deionized water by weight, and the multi-component aqueous bisphenol A epoxy resin emulsion is prepared, wherein the epoxy equivalent of the solid component is 453 g/Eq. The carbon fiber contains 0.92 percent of glue, the tensile strength of the carbon fiber is 4542MPa, the tensile modulus is 232GPa, the fluffing amount is 3.8mg/30m, and the stiffness is 12 cm. The tensile strength of the carbon fiber reinforced cloth is 3623MPa, and the interlaminar shear strength is 43 MPa.
Comparative example 3: 100 parts of bisphenol A epoxy resin, 20 parts of emulsifier, 20 parts of epoxy modifier and 140 parts of deionized water by weight, and the multi-component aqueous bisphenol A epoxy resin emulsion is prepared, wherein the epoxy equivalent of the solid component is 224 g/Eq. The carbon fiber contains 0.83 percent of glue, the tensile strength of the carbon fiber is 4511MPa, the tensile modulus is 231GPa, the fluffing amount is 5.4mg/30m, and the stiffness is 5 cm. The tensile strength of the carbon fiber reinforced cloth is 3597MPa, and the interlaminar shear strength is 45 MPa.
As can be seen from the above examples and comparative examples, the epoxy equivalent of the solid content of the multi-component aqueous bisphenol A-type epoxy resin emulsion sizing agent has an important influence on the fiber fuzzing amount and stiffness, for example, the epoxy equivalent is increased, the fuzzing amount of the fiber is decreased, and the stiffness is increased. The epoxy modifier has an influence on the layer shearing strength of the carbon fiber reinforced cloth, and is beneficial to improving the wettability of epoxy resin on the carbon fiber reinforced cloth and improving the layer shearing performance to a certain extent.
In conclusion, the invention discloses a preparation method of carbon fiber for building reinforcing carbon cloth. According to the invention, the adjustment of the epoxy equivalent of the sizing agent emulsion is used for optimally controlling the wool yarn amount and the stiffness of the fiber, and the epoxy compound modifier is introduced, so that the reaction activity and the crosslinking density of the sizing agent are improved, and the problems of poor wettability of carbon cloth and epoxy resin and low interlayer strength of carbon fiber in the field of building reinforcement are solved.
Claims (8)
1. A preparation method of carbon fiber for building reinforcing carbon cloth is characterized by comprising the following steps: the method comprises the following steps:
a) preparing carbon fiber precursor, drafting and spinning through a polymer solution spinneret plate, and obtaining the carbon fiber precursor through washing at 30-50 ℃, water drafting at 60-80 ℃, oiling at 20-30 ℃, drying at 150-200 ℃, drafting by saturated steam at 0.3-0.6 MPa and drying by a hot roller at 120-190 ℃;
b) preparing carbon fibers, namely pre-oxidizing carbon fiber precursors at the temperature of 200-300 ℃, wherein the draft multiple is 0.95-1.0 time; the low-temperature carbonization temperature is 400-800 ℃, and the drafting multiple is 0.95-1.05 times; obtaining carbon fiber under the conditions that the high-temperature carbonization temperature is 1100-1500 ℃ and the drafting multiple is 0.95-1.0 times;
the obtained carbon fiber for the building reinforcing carbon cloth has tensile strength of more than or equal to 4500MPa, modulus of more than or equal to 230GPa and elongation at break of more than or equal to 1.8 percent; the fuzzing amount of the carbon fibers is less than or equal to 5mg/30m, and the stiffness is between 6 and 12 cm; the carbon fiber resin has good wettability, the tensile strength of the carbon fiber reinforced cloth is not less than 3400MPa, the interlaminar shear strength is not less than 45MPa, and the application requirements of the high-strength I-grade carbon fiber building reinforced cloth are met.
2. The method for preparing the carbon fiber for the building reinforcing carbon cloth according to claim 1, which is characterized in that: the carbon fiber is subjected to surface sizing treatment by adopting multi-component water-based bisphenol A epoxy resin emulsion, and the content of a fiber sizing agent is controlled to be 0.6-1.2%.
3. The method for preparing the carbon fiber for the building reinforcing carbon cloth according to claim 2, which is characterized in that: the multi-component water-based bisphenol A epoxy resin emulsion comprises 100 parts by weight of bisphenol A epoxy resin, 10-35 parts by weight of emulsifier, 5-10 parts by weight of epoxy modifier and 100-300 parts by weight of deionized water.
4. The method for preparing the carbon fiber for the building reinforcing carbon cloth according to claim 3, which is characterized in that: the bisphenol A type epoxy resin is one or a combination of epoxy resin E51, epoxy resin E44 and epoxy resin E20; the emulsifier is one or more of isotridecanol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether and sorbitan oleate; the epoxy modifier is one or a combination of more of propenyl glycidyl ether, ethylene glycol diglycidyl ether and resorcinol diglycidyl ether.
5. The method for preparing carbon fiber for building reinforcement carbon cloth according to any one of claims 2 to 4, characterized in that: the multi-component water-based bisphenol A epoxy resin emulsion has the epoxy equivalent range of solid content of 250-500 g/Eq.
6. The method for preparing carbon fiber for building reinforcement carbon cloth according to any one of claim 5, characterized in that: and carrying out surface sizing treatment on the obtained carbon fiber by adopting multi-component water-based bisphenol A epoxy resin emulsion, wherein the content of a fiber sizing agent is controlled to be 0.6-1.2%.
7. The method for preparing the carbon fiber for the building reinforcing carbon cloth according to claim 3, which is characterized in that:
the preparation method of the multi-component water-based bisphenol A epoxy resin emulsion comprises the following specific steps:
firstly, 100 parts by weight of bisphenol A type epoxy resin is prepared, 5-10 parts by weight of epoxy modifier is slowly added and mixed, and the mixture is uniformly stirred under the heating condition; then, gradually adding 10-35 parts by weight of an emulsifier, and uniformly mixing and stirring; and finally, slowly pouring 100-300 parts by weight of deionized water for high-speed shearing emulsification, and reacting according to a phase inversion method to obtain the multi-component waterborne epoxy resin emulsion.
8. A carbon fiber for construction reinforcing carbon cloth prepared based on the method of any one of claims 1 to 7.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112519193A (en) * | 2020-11-13 | 2021-03-19 | 上海卫星装备研究所 | Satellite composite material truss glue joint, reinforcing structure and reinforcing method thereof |
| CN113388230A (en) * | 2021-06-30 | 2021-09-14 | 南京晓庄学院 | Glass fiber reinforced plastic composite material and preparation method thereof |
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2020
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| CN104479109A (en) * | 2014-12-22 | 2015-04-01 | 北京化工大学 | High-modulus resin mixture as well as preparation method and application thereof |
| CN105332285A (en) * | 2015-11-30 | 2016-02-17 | 广东工业大学 | Water-borne sizing agent for carbon fiber and preparation method and sizing method thereof |
| CN106626439A (en) * | 2016-12-27 | 2017-05-10 | 长春工业大学 | Preparation method of low-cost and large-tow 48K carbon fiber preimpregnated cloth and composite material thereof |
| CN111139555A (en) * | 2019-12-26 | 2020-05-12 | 中复神鹰碳纤维有限责任公司 | High-heat-resistance oil agent and preparation method of polyacrylonitrile carbon fiber |
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| CN112519193A (en) * | 2020-11-13 | 2021-03-19 | 上海卫星装备研究所 | Satellite composite material truss glue joint, reinforcing structure and reinforcing method thereof |
| CN113388230A (en) * | 2021-06-30 | 2021-09-14 | 南京晓庄学院 | Glass fiber reinforced plastic composite material and preparation method thereof |
| CN113388230B (en) * | 2021-06-30 | 2024-06-28 | 南京晓庄学院 | Glass fiber reinforced plastic composite material and preparation method thereof |
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