CN113085290A - Conductive fireproof carbon fiber composite board and preparation method thereof - Google Patents
Conductive fireproof carbon fiber composite board and preparation method thereof Download PDFInfo
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- CN113085290A CN113085290A CN202110404533.6A CN202110404533A CN113085290A CN 113085290 A CN113085290 A CN 113085290A CN 202110404533 A CN202110404533 A CN 202110404533A CN 113085290 A CN113085290 A CN 113085290A
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 148
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 148
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 143
- 239000002131 composite material Substances 0.000 title claims abstract description 71
- 238000002360 preparation method Methods 0.000 title claims description 23
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000003063 flame retardant Substances 0.000 claims abstract description 82
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000000835 fiber Substances 0.000 claims abstract description 52
- 239000006185 dispersion Substances 0.000 claims abstract description 33
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 29
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000007822 coupling agent Substances 0.000 claims abstract description 22
- 150000001721 carbon Chemical class 0.000 claims abstract description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 25
- 238000001035 drying Methods 0.000 claims description 23
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000010410 layer Substances 0.000 claims description 15
- 239000002356 single layer Substances 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims description 12
- 238000002791 soaking Methods 0.000 claims description 10
- 238000009987 spinning Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
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- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- 238000009960 carding Methods 0.000 claims description 5
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- 238000001125 extrusion Methods 0.000 claims description 5
- 238000009740 moulding (composite fabrication) Methods 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 3
- 230000009970 fire resistant effect Effects 0.000 claims 3
- 230000003647 oxidation Effects 0.000 abstract description 3
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- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 239000011157 advanced composite material Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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Classifications
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/07—Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
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- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
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- 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/202—Conductive
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
The invention discloses a conductive fireproof carbon fiber composite board, and particularly relates to the technical field of carbon fiber composite boards, wherein the conductive fireproof carbon fiber composite board comprises the following raw materials: the conductive flame-retardant PET composite material comprises modified carbon fibers, conductive flame-retardant fibers, absolute ethyl alcohol, nano nickel, titanium dioxide, conductive carbon black and a coupling agent, wherein the conductive flame-retardant fibers comprise flame-retardant PET and conductive master batches. According to the invention, the compressed carbon fiber is soaked in the dispersion liquid containing nano nickel and titanium dioxide, the nano nickel can enter pores of the carbon fiber to prevent the internal local resistance of the carbon fiber composite board from being higher, so that the conductivity of the carbon fiber composite board is better, the titanium dioxide can be loaded on the carbon fiber to slow down the oxidation of the nano nickel and improve the aging resistance and the strength of the modified carbon fiber, the conductive flame-retardant fiber is prepared from flame-retardant PET and conductive master batches, and the mixture of the conductive flame-retardant fiber and the modified carbon fiber can effectively improve the flame-retardant and fireproof performances of the carbon fiber composite board and enable the carbon fiber composite board to have higher conductivity.
Description
Technical Field
The invention relates to the technical field of carbon fiber composite boards, in particular to a conductive fireproof carbon fiber composite board and a preparation method thereof.
Background
With the rapid development of material science, functional composite materials are more and more concerned by various scholars. Among them, wood composite materials having high performance and high added value have gradually become a research hotspot in this field. In order to meet the requirements of people on various properties of the wood material, the carbon fiber wood composite material is produced at the same time. Carbon fiber is used as an advanced composite material and widely applied to various fields such as aerospace, nuclear energy equipment, transportation, invisible weapons and the like. The carbon fiber not only has a series of excellent performances of high specific strength and specific modulus, low thermal expansion coefficient, high temperature resistance, corrosion resistance, creep resistance, self-lubrication and the like, but also has the characteristics of fiber flexibility, weavability and the like. In order to further enhance other physical and chemical properties of the carbon fiber, the carbon fiber is usually compounded with a plate made of other materials, so as to achieve the purpose of enhancing the performance. The carbon fiber is a carbon fiber formed by carbonizing an organic fiber or a pitch fiber at high temperature in an inert atmosphere, the molecular structure of the fiber is between diamond and graphite, the carbon content of the fiber is more than 90 percent of a polycyclic structure, and the current commercial and military carbon fibers can be divided into three categories according to different raw materials, namely: viscose-based, pitch-based, and polyacrylonitrile-based carbon fibers.
The carbon fiber plate is widely used due to light weight, good flexibility, convenient construction and quality guarantee, but the existing carbon fiber composite plate has insufficient conductivity in the using process, cannot meet the use of power equipment, and has poor flame retardant effect.
Disclosure of Invention
In order to overcome the above defects in the prior art, embodiments of the present invention provide a conductive fireproof carbon fiber composite board and a preparation method thereof, and the problems to be solved by the present invention are: how to improve the electric conductivity and the fire-proof performance of the carbon fiber composite board and meet the use requirement of the carbon fiber composite board in power equipment.
In order to achieve the purpose, the invention provides the following technical scheme: the conductive fireproof carbon fiber composite board comprises the following raw materials in parts by weight: 40-60 parts of modified carbon fiber, 5-10 parts of conductive flame-retardant fiber, 1-5 parts of absolute ethyl alcohol, 2-6 parts of nano nickel, 2-6 parts of titanium dioxide, 1-5 parts of conductive carbon black and 0.5-1.5 parts of coupling agent, wherein the conductive flame-retardant fiber comprises flame-retardant PET and conductive master batch.
In a preferred embodiment, the feed comprises the following raw materials in parts by weight: 45-55 parts of modified carbon fiber, 6-8 parts of conductive flame-retardant fiber, 2-4 parts of absolute ethyl alcohol, 3-5 parts of nano nickel, 3-5 parts of titanium dioxide, 2-4 parts of conductive carbon black and 0.8-1.2 parts of coupling agent, wherein the conductive flame-retardant fiber comprises flame-retardant PET and conductive master batch.
In a preferred embodiment, the feed comprises the following raw materials in parts by weight: 50 parts of modified carbon fiber, 7 parts of conductive flame-retardant fiber, 3 parts of absolute ethyl alcohol, 4 parts of nano nickel, 4 parts of titanium dioxide, 3 parts of conductive carbon black and 1 part of coupling agent, wherein the conductive flame-retardant fiber comprises flame-retardant PET and conductive master batch.
In a preferred embodiment, the titanium dioxide is nano-scale titanium dioxide, the conductive carbon black is nano-scale conductive carbon black, the coupling agent is a silane coupling agent, and the mass ratio of the flame-retardant PET to the conductive master batch is 1: (4-6).
The invention also provides a preparation method of the conductive fireproof carbon fiber composite board, which comprises the following specific preparation steps:
the method comprises the following steps: preparing modified carbon fibers, namely adding nano nickel into absolute ethyl alcohol to form a dispersion liquid for later use, compressing the carbon fibers in a hot press, then putting the compressed carbon fibers into the dispersion liquid, heating the dispersion liquid to soak the carbon fibers in the heated dispersion liquid for 1-2 hours, then putting titanium dioxide into the dispersion liquid, continuing soaking for 2-3 hours, taking out the carbon fibers after soaking is finished, putting the carbon fibers into an oven for drying, and obtaining the modified carbon fibers after drying is finished;
step two: preparing conductive flame-retardant fibers, namely drying the weighed flame-retardant PET and conductive master batches respectively, performing melt extrusion respectively after drying, stirring and mixing the melt-extruded flame-retardant PET and the conductive master batches uniformly, and performing spinning, cooling and forming to obtain the conductive flame-retardant fibers;
step three: putting the modified carbon fibers obtained in the step one and the conductive flame-retardant fibers obtained in the step two into a mixing tank, adding a coupling agent and conductive carbon black into the mixing tank, uniformly stirring and mixing, then introducing into a carding machine to card into a net to form a single-layer net, and then overlapping and laying the single-layer net into a plurality of layers to form a multi-layer net;
step four: placing the multilayer net obtained in the third step in a needle machine for primary needling treatment, performing secondary needling treatment after the primary needling treatment, and obtaining a carbon fiber composite felt plate after the secondary needling treatment;
step five: and (4) placing the carbon fiber composite felt board obtained in the fourth step on a heating plate of a hot press for preheating, and performing hot press molding by using the hot press after preheating is completed to obtain the conductive fireproof carbon fiber composite board.
In a preferred embodiment, the temperature of the carbon fiber in the first step is 50-60 ℃ during compression, the compression rate of the carbon fiber is 30-40%, the heating temperature of the dispersion is 40-50 ℃, the temperature of the oven in the first step is 50-60 ℃, and the modified carbon fiber is dried until the water content is 10-15%.
In a preferred embodiment, the stirring rate of the stirring and mixing in the second step is 1000-1400 rpm, the stirring time is 20-40 minutes, and the spinning temperature in the second step is 25 ℃.
In a preferred embodiment, the gram weight of the single-layer net in the step three is 60-100 g, and the gram weight of the multi-layer net is 3000-8000g/m2。
In a preferred embodiment, the needling density of the primary needling treatment in the fourth step is 60-80 needles/cm3The needling depth is 60-80mm, and the needling density of the secondary needling treatment is 50-60 needles/cm3The depth of the needle penetration is 40-60 mm.
In a preferred embodiment, the temperature for preheating in the fifth step is 150-.
The invention has the technical effects and advantages that:
1. the conductive fireproof carbon fiber composite board prepared by adopting the raw material formula is prepared by adopting a mixture of modified carbon fibers, conductive flame-retardant fibers and conductive carbon black, the carbon fibers are modified by nano-nickel and nano-titanium dioxide, the compressed carbon fibers are soaked in a dispersion liquid containing the nano-nickel and the nano-titanium dioxide, the nano-nickel can enter pores of the carbon fibers, the density, the hardness and the elastic modulus of the carbon fibers can be effectively improved, the high local resistance in the carbon fiber composite board can be prevented, the conductive performance of the carbon fiber composite board is better, the titanium dioxide can be loaded on the carbon fibers, the oxidation of the nano-nickel can be slowed down, the aging resistance and the strength of the modified carbon fibers are improved, the conductive flame-retardant fibers are prepared by adopting flame-retardant PET and conductive master batches, and the conductive flame-retardant fibers and the modified carbon fibers are mixed, so that, the carbon fiber composite board can have higher conductivity, so that the carbon fiber composite board can meet the use requirement of power equipment;
2. the conductive carbon black is added, so that the conductive performance of the carbon fiber composite board can be effectively improved, the multilayer net is subjected to primary needling treatment and secondary needling treatment and then is subjected to hot press molding, the processing technology is simple, and the processing efficiency of the carbon fiber composite board can be effectively improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides a conductive fireproof carbon fiber composite board which comprises the following raw materials in parts by weight: 40 parts of modified carbon fiber, 5 parts of conductive flame-retardant fiber, 1 part of absolute ethyl alcohol, 2 parts of nano nickel, 2 parts of titanium dioxide, 1 part of conductive carbon black and 0.5 part of coupling agent, wherein the conductive flame-retardant fiber comprises flame-retardant PET and conductive master batch.
In a preferred embodiment, the titanium dioxide is nano-scale titanium dioxide, the conductive carbon black is nano-scale conductive carbon black, the coupling agent is a silane coupling agent, and the mass ratio of the flame-retardant PET to the conductive master batch is 1: 5.
the invention also provides a preparation method of the conductive fireproof carbon fiber composite board, which comprises the following specific preparation steps:
the method comprises the following steps: preparing modified carbon fibers, namely adding nano nickel into absolute ethyl alcohol to form a dispersion liquid for later use, compressing the carbon fibers in a hot press, then putting the compressed carbon fibers into the dispersion liquid, heating the dispersion liquid to soak the carbon fibers in the heated dispersion liquid for 2 hours, then putting titanium dioxide into the dispersion liquid, continuing soaking for 2.5 hours, taking out the carbon fibers after soaking is finished, putting the carbon fibers into an oven for drying, and obtaining the modified carbon fibers after drying is finished;
step two: preparing conductive flame-retardant fibers, namely drying the weighed flame-retardant PET and conductive master batches respectively, performing melt extrusion respectively after drying, stirring and mixing the melt-extruded flame-retardant PET and the conductive master batches uniformly, and performing spinning, cooling and forming to obtain the conductive flame-retardant fibers;
step three: putting the modified carbon fibers obtained in the step one and the conductive flame-retardant fibers obtained in the step two into a mixing tank, adding a coupling agent and conductive carbon black into the mixing tank, uniformly stirring and mixing, then introducing into a carding machine to card into a net to form a single-layer net, and then overlapping and laying the single-layer net into a plurality of layers to form a multi-layer net;
step four: placing the multilayer net obtained in the third step in a needle machine for primary needling treatment, performing secondary needling treatment after the primary needling treatment, and obtaining a carbon fiber composite felt plate after the secondary needling treatment;
step five: and (4) placing the carbon fiber composite felt board obtained in the fourth step on a heating plate of a hot press for preheating, and performing hot press molding by using the hot press after preheating is completed to obtain the conductive fireproof carbon fiber composite board.
In a preferred embodiment, the temperature of the carbon fiber in the first step is 55 ℃ during compression, the compression rate of the carbon fiber is 35%, the heating temperature of the dispersion is 45 ℃, and the temperature of the oven in the first step is 55 ℃ during drying until the water content of the modified carbon fiber is 13%.
In a preferred embodiment, the stirring rate of the stirring and mixing in the second step is 1200 rpm, the stirring time is 30 minutes, and the spinning temperature in the second step is 25 ℃.
In a preferred embodiment, the grammage of the single-layer web in step three is 80 grams, and the grammage of the multi-layer web is 6000g/m2。
In a preferred embodiment, the needling density of the primary needling treatment in the fourth step is 70 needles/cm3The needling depth is 70mm, and the needling density of the secondary needling treatment is 55 needles/cm3The depth of the needle penetration is 50 mm.
In a preferred embodiment, the preheating temperature in the fifth step is 180 ℃, the preheating time is 3 minutes, the pressure in the hot press molding is 18MPa, and the hot press molding time is 45 seconds.
Example 2:
different from the embodiment 1, the conductive fireproof carbon fiber composite board comprises the following raw materials in parts by weight: 50 parts of modified carbon fiber, 7 parts of conductive flame-retardant fiber, 3 parts of absolute ethyl alcohol, 4 parts of nano nickel, 4 parts of titanium dioxide, 3 parts of conductive carbon black and 1 part of coupling agent, wherein the conductive flame-retardant fiber comprises flame-retardant PET and conductive master batch.
Example 3:
different from the embodiments 1-2, the conductive fireproof carbon fiber composite board comprises the following raw materials in parts by weight: 60 parts of modified carbon fiber, 10 parts of conductive flame-retardant fiber, 5 parts of absolute ethyl alcohol, 6 parts of nano nickel, 6 parts of titanium dioxide, 5 parts of conductive carbon black and 1.5 parts of coupling agent, wherein the conductive flame-retardant fiber comprises flame-retardant PET and conductive master batch.
Example 4:
the conductive fireproof carbon fiber composite board comprises the following raw materials in parts by weight: 40 parts of modified carbon fiber, 5 parts of conductive flame-retardant fiber, 1 part of absolute ethyl alcohol, 2 parts of nano nickel, 2 parts of titanium dioxide, 1 part of conductive carbon black and 0.5 part of coupling agent, wherein the conductive flame-retardant fiber comprises flame-retardant PET and conductive master batch.
In a preferred embodiment, the titanium dioxide is nano-scale titanium dioxide, the conductive carbon black is nano-scale conductive carbon black, the coupling agent is a silane coupling agent, and the mass ratio of the flame-retardant PET to the conductive master batch is 1: 4.
the invention also provides a preparation method of the conductive fireproof carbon fiber composite board, which comprises the following specific preparation steps:
the method comprises the following steps: preparing modified carbon fibers, namely adding nano nickel into absolute ethyl alcohol to form a dispersion liquid for later use, compressing the carbon fibers in a hot press, then putting the compressed carbon fibers into the dispersion liquid, heating the dispersion liquid to soak the carbon fibers in the heated dispersion liquid for 2 hours, then putting titanium dioxide into the dispersion liquid, continuing soaking for 2.5 hours, taking out the carbon fibers after soaking is finished, putting the carbon fibers into an oven for drying, and obtaining the modified carbon fibers after drying is finished;
step two: preparing conductive flame-retardant fibers, namely drying the weighed flame-retardant PET and conductive master batches respectively, performing melt extrusion respectively after drying, stirring and mixing the melt-extruded flame-retardant PET and the conductive master batches uniformly, and performing spinning, cooling and forming to obtain the conductive flame-retardant fibers;
step three: putting the modified carbon fibers obtained in the step one and the conductive flame-retardant fibers obtained in the step two into a mixing tank, adding a coupling agent and conductive carbon black into the mixing tank, uniformly stirring and mixing, then introducing into a carding machine to card into a net to form a single-layer net, and then overlapping and laying the single-layer net into a plurality of layers to form a multi-layer net;
step four: placing the multilayer net obtained in the third step in a needle machine for primary needling treatment, performing secondary needling treatment after the primary needling treatment, and obtaining a carbon fiber composite felt plate after the secondary needling treatment;
step five: and (4) placing the carbon fiber composite felt board obtained in the fourth step on a heating plate of a hot press for preheating, and performing hot press molding by using the hot press after preheating is completed to obtain the conductive fireproof carbon fiber composite board.
In a preferred embodiment, the temperature of the carbon fiber in the first step is 55 ℃ during compression, the compression rate of the carbon fiber is 35%, the heating temperature of the dispersion is 45 ℃, and the temperature of the oven in the first step is 55 ℃ during drying until the water content of the modified carbon fiber is 13%.
In a preferred embodiment, the stirring rate of the stirring and mixing in the second step is 1200 rpm, the stirring time is 30 minutes, and the spinning temperature in the second step is 25 ℃.
In a preferred embodiment, the grammage of the single-layer web in step three is 80 grams, and the grammage of the multi-layer web is 6000g/m2。
In a preferred embodiment, the needling density of the primary needling treatment in the fourth step is 70 needles/cm3The needling depth is 70mm, and the needling density of the secondary needling treatment is 55 needles/cm3The depth of the needle penetration is 50 mm.
In a preferred embodiment, the preheating temperature in the fifth step is 180 ℃, the preheating time is 3 minutes, the pressure in the hot press molding is 18MPa, and the hot press molding time is 45 seconds.
Example 5:
the utility model provides a conductive fire prevention carbon fiber composite sheet, a conductive fire prevention carbon fiber composite sheet includes the raw materials of following parts by weight: 40 parts of modified carbon fiber, 5 parts of conductive flame-retardant fiber, 1 part of absolute ethyl alcohol, 2 parts of nano nickel, 2 parts of titanium dioxide, 1 part of conductive carbon black and 0.5 part of coupling agent, wherein the conductive flame-retardant fiber comprises flame-retardant PET and conductive master batch.
In a preferred embodiment, the titanium dioxide is nano-scale titanium dioxide, the conductive carbon black is nano-scale conductive carbon black, the coupling agent is a silane coupling agent, and the mass ratio of the flame-retardant PET to the conductive master batch is 1: 6.
the invention also provides a preparation method of the conductive fireproof carbon fiber composite board, which comprises the following specific preparation steps:
the method comprises the following steps: preparing modified carbon fibers, namely adding nano nickel into absolute ethyl alcohol to form a dispersion liquid for later use, compressing the carbon fibers in a hot press, then putting the compressed carbon fibers into the dispersion liquid, heating the dispersion liquid to soak the carbon fibers in the heated dispersion liquid for 2 hours, then putting titanium dioxide into the dispersion liquid, continuing soaking for 2.5 hours, taking out the carbon fibers after soaking is finished, putting the carbon fibers into an oven for drying, and obtaining the modified carbon fibers after drying is finished;
step two: preparing conductive flame-retardant fibers, namely drying the weighed flame-retardant PET and conductive master batches respectively, performing melt extrusion respectively after drying, stirring and mixing the melt-extruded flame-retardant PET and the conductive master batches uniformly, and performing spinning, cooling and forming to obtain the conductive flame-retardant fibers;
step three: putting the modified carbon fibers obtained in the step one and the conductive flame-retardant fibers obtained in the step two into a mixing tank, adding a coupling agent and conductive carbon black into the mixing tank, uniformly stirring and mixing, then introducing into a carding machine to card into a net to form a single-layer net, and then overlapping and laying the single-layer net into a plurality of layers to form a multi-layer net;
step four: placing the multilayer net obtained in the third step in a needle machine for primary needling treatment, performing secondary needling treatment after the primary needling treatment, and obtaining a carbon fiber composite felt plate after the secondary needling treatment;
step five: and (4) placing the carbon fiber composite felt board obtained in the fourth step on a heating plate of a hot press for preheating, and performing hot press molding by using the hot press after preheating is completed to obtain the conductive fireproof carbon fiber composite board.
In a preferred embodiment, the temperature of the carbon fiber in the first step is 55 ℃ during compression, the compression rate of the carbon fiber is 35%, the heating temperature of the dispersion is 45 ℃, and the temperature of the oven in the first step is 55 ℃ during drying until the water content of the modified carbon fiber is 13%.
In a preferred embodiment, the stirring rate of the stirring and mixing in the second step is 1200 rpm, the stirring time is 30 minutes, and the spinning temperature in the second step is 25 ℃.
In a preferred embodiment, the grammage of the single-layer web in step three is 80 grams, and the grammage of the multi-layer web is 6000g/m2。
In a preferred embodimentWherein the needling density of the primary needling treatment in the fourth step is 70 needles/cm3The needling depth is 70mm, and the needling density of the secondary needling treatment is 55 needles/cm3The depth of the needle penetration is 50 mm.
In a preferred embodiment, the preheating temperature in the fifth step is 180 ℃, the preheating time is 3 minutes, the pressure in the hot press molding is 18MPa, and the hot press molding time is 45 seconds.
The conductive fireproof carbon fiber composite boards prepared in the above embodiments 1 to 5 are respectively used as an experimental group 1, an experimental group 2, an experimental group 3, an experimental group 4 and an experimental group 5, and the conventional carbon fiber composite boards are used as a control group for testing, and the flame retardance, the mechanics and the conductivity of the selected products are respectively tested. The measurement results are shown in the table I:
| flame retardancy/mm/min | Tensile strength/MPa | Flexural Strength/MPa | Resistivity/ohm/cm | |
| Experimental group 1 | 32 | 122 | 140 | 1.0E+4 |
| Experimental group 2 | 28 | 132 | 148 | 1.0E+2 |
| Experimental group 3 | 31 | 127 | 143 | 1.0E+3 |
| Experimental group 4 | 30 | 123 | 137 | 1.0E+4 |
| Experimental group 5 | 31 | 120 | 135 | 1.0E+2 |
| Control group | 56 | 65 | 100 | 1.0E+15 |
Watch 1
It can be seen from table one that, compared with the traditional carbon fiber cloth, the conductive fireproof carbon fiber composite board produced by the present invention has higher flame retardant property, higher electrical conductivity and better mechanical property, in examples 4 and 5, the content of the conductive master batch in the conductive flame retardant fiber is respectively changed, and the conductive effect of the carbon fiber composite board is better along with the increase of the conductive master batch, which indicates that the carbon fiber is modified by the nano nickel and the nano titanium dioxide, the compressed carbon fiber is soaked into the dispersion liquid containing the nano nickel and the titanium dioxide, the nano nickel can enter the pores of the carbon fiber, the density, the hardness and the elastic modulus of the carbon fiber composite board can be effectively improved, and the internal local resistance of the carbon fiber can be prevented from being higher, so that the conductive property of the carbon fiber composite board is better, and the titanium dioxide can be loaded on the carbon fiber, the oxidation of, the anti-aging performance and the strength of the modified carbon fibers are improved, the conductive flame-retardant fibers are made of flame-retardant PET and conductive master batches, the conductive flame-retardant fibers and the modified carbon fibers are mixed, the flame-retardant fireproof performance of the carbon fiber composite board can be effectively improved, the carbon fiber composite board can be enabled to have higher conductive performance, and the carbon fiber composite board can be used for being satisfied with power equipment.
And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a conductive fire prevention carbon fiber composite sheet which characterized in that: the feed comprises the following raw materials in parts by weight: 40-60 parts of modified carbon fiber, 5-10 parts of conductive flame-retardant fiber, 1-5 parts of absolute ethyl alcohol, 2-6 parts of nano nickel, 2-6 parts of titanium dioxide, 1-5 parts of conductive carbon black and 0.5-1.5 parts of coupling agent, wherein the conductive flame-retardant fiber comprises flame-retardant PET and conductive master batch.
2. The electrically conductive and fire resistant carbon fiber composite panel of claim 1, wherein: the feed comprises the following raw materials in parts by weight: 45-55 parts of modified carbon fiber, 6-8 parts of conductive flame-retardant fiber, 2-4 parts of absolute ethyl alcohol, 3-5 parts of nano nickel, 3-5 parts of titanium dioxide, 2-4 parts of conductive carbon black and 0.8-1.2 parts of coupling agent, wherein the conductive flame-retardant fiber comprises flame-retardant PET and conductive master batch.
3. The electrically conductive and fire resistant carbon fiber composite panel of claim 1, wherein: the feed comprises the following raw materials in parts by weight: 50 parts of modified carbon fiber, 7 parts of conductive flame-retardant fiber, 3 parts of absolute ethyl alcohol, 4 parts of nano nickel, 4 parts of titanium dioxide, 3 parts of conductive carbon black and 1 part of coupling agent, wherein the conductive flame-retardant fiber comprises flame-retardant PET and conductive master batch.
4. The electrically conductive and fire resistant carbon fiber composite panel of claim 1, wherein: the titanium dioxide is nano-scale titanium dioxide, the conductive carbon black is nano-scale conductive carbon black, the coupling agent is a silane coupling agent, and the mass ratio of the flame-retardant PET to the conductive master batch is 1: (4-6).
5. The method for preparing the conductive fireproof carbon fiber composite board according to any one of claims 1 to 4, wherein the method comprises the following steps: the preparation method comprises the following specific steps:
the method comprises the following steps: preparing modified carbon fibers, namely adding nano nickel into absolute ethyl alcohol to form a dispersion liquid for later use, compressing the carbon fibers in a hot press, then putting the compressed carbon fibers into the dispersion liquid, heating the dispersion liquid to soak the carbon fibers in the heated dispersion liquid for 1-2 hours, then putting titanium dioxide into the dispersion liquid, continuing soaking for 2-3 hours, taking out the carbon fibers after soaking is finished, putting the carbon fibers into an oven for drying, and obtaining the modified carbon fibers after drying is finished;
step two: preparing conductive flame-retardant fibers, namely drying the weighed flame-retardant PET and conductive master batches respectively, performing melt extrusion respectively after drying, stirring and mixing the melt-extruded flame-retardant PET and the conductive master batches uniformly, and performing spinning, cooling and forming to obtain the conductive flame-retardant fibers;
step three: putting the modified carbon fibers obtained in the step one and the conductive flame-retardant fibers obtained in the step two into a mixing tank, adding a coupling agent and conductive carbon black into the mixing tank, uniformly stirring and mixing, then introducing into a carding machine to card into a net to form a single-layer net, and then overlapping and laying the single-layer net into a plurality of layers to form a multi-layer net;
step four: placing the multilayer net obtained in the third step in a needle machine for primary needling treatment, performing secondary needling treatment after the primary needling treatment, and obtaining a carbon fiber composite felt plate after the secondary needling treatment;
step five: and (4) placing the carbon fiber composite felt board obtained in the fourth step on a heating plate of a hot press for preheating, and performing hot press molding by using the hot press after preheating is completed to obtain the conductive fireproof carbon fiber composite board.
6. The preparation method of the conductive fireproof carbon fiber composite board according to claim 5, wherein the preparation method comprises the following steps: the temperature of the carbon fiber in the first step is 50-60 ℃ when the carbon fiber is compressed, the compression rate of the carbon fiber is 30-40%, the heating temperature of the dispersion liquid is 40-50 ℃, the temperature of the oven in the first step is 50-60 ℃, and the modified carbon fiber is dried until the water content of the modified carbon fiber is 10-15%.
7. The preparation method of the conductive fireproof carbon fiber composite board according to claim 5, wherein the preparation method comprises the following steps: the stirring speed of stirring and mixing in the second step is 1000-1400 rpm, the stirring time is 20-40 minutes, and the spinning temperature in the second step is 25 ℃.
8. The preparation method of the conductive fireproof carbon fiber composite board according to claim 5, wherein the preparation method comprises the following steps: the gram weight of the single-layer net in the step three is 60-100 g, and the gram weight of the multi-layer net is 3000-8000g/m2。
9. The preparation method of the conductive fireproof carbon fiber composite board according to claim 5, wherein the preparation method comprises the following steps: the needling density of the primary needling treatment in the fourth step is 60-80 needles/cm3The needling depth is 60-80mm, and the needling density of the secondary needling treatment is 50-60 needles/cm3The depth of the needle penetration is 40-60 mm.
10. The preparation method of the conductive fireproof carbon fiber composite board according to claim 5, wherein the preparation method comprises the following steps: the temperature during preheating in the fifth step is 150-.
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| CN106113215A (en) * | 2016-07-25 | 2016-11-16 | 志邦厨柜股份有限公司 | A kind of fire-retardant carbon fiber wood composite fibre board and preparation method thereof |
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