CN115534456B - Flame-retardant conductive foam and preparation process thereof - Google Patents
Flame-retardant conductive foam and preparation process thereof Download PDFInfo
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- CN115534456B CN115534456B CN202211127517.8A CN202211127517A CN115534456B CN 115534456 B CN115534456 B CN 115534456B CN 202211127517 A CN202211127517 A CN 202211127517A CN 115534456 B CN115534456 B CN 115534456B
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 189
- 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 title claims abstract description 183
- 239000006260 foam Substances 0.000 title claims abstract description 162
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000004744 fabric Substances 0.000 claims abstract description 42
- 229920002545 silicone oil Polymers 0.000 claims abstract description 34
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 26
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 13
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- 239000001257 hydrogen Substances 0.000 claims abstract description 13
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 13
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 12
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
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- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 17
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- 239000000463 material Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 9
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 claims description 6
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- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
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- 229960004887 ferric hydroxide Drugs 0.000 claims description 4
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- QYLFHLNFIHBCPR-UHFFFAOYSA-N 1-ethynylcyclohexan-1-ol Chemical group C#CC1(O)CCCCC1 QYLFHLNFIHBCPR-UHFFFAOYSA-N 0.000 claims description 3
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
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- 239000007788 liquid Substances 0.000 claims description 2
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- 230000000052 comparative effect Effects 0.000 description 12
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- 229920005830 Polyurethane Foam Polymers 0.000 description 2
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- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
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- 238000005507 spraying Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 239000004114 Ammonium polyphosphate Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 1
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- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
- B29C44/321—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed part being a lining, e.g. a film or a support lining
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- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2003/382—Boron-containing compounds and nitrogen
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- C—CHEMISTRY; METALLURGY
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Landscapes
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Abstract
A flame-retardant conductive foam and a preparation process thereof comprise flame-retardant foam and conductive cloth; the outer layer of the flame-retardant foam is coated with conductive cloth; a flame-retardant layer is arranged in the conductive cloth and between the flame-retardant foam cotton; the flame-retardant foam comprises the following components in parts by weight: the flame retardant comprises, by weight, 25-35 parts of 107 silicon rubber, 15-25 parts of hexagonal boron nitride powder, 15-20 parts of a composite flame retardant, 8-10 parts of methyl end-capped hydrogen-containing silicone oil, 5-8 parts of carbon nanotubes, 3-5 parts of vinyl end-capped silicone oil, 3-5 parts of methyl end-capped silicone oil with vinyl groups in side chains, 3-5 parts of fumed silica, 1-3 parts of an inhibitor, 0.5-1 part of an anti-aging agent and 0.5-1 part of a platinum catalyst. The flame-retardant conductive foam and the preparation process thereof have simple structures, the flame-retardant property of the conductive foam is improved by improving the formula of the foam and arranging the flame-retardant layer between the conductive cloth and the flame-retardant foam, and the flame-retardant grade of the prepared conductive foam reaches UL94-HF1.
Description
Technical Field
The invention belongs to the technical field of conductive foam, and particularly relates to flame-retardant conductive foam and a preparation process thereof.
Background
The conductive foam is a gap shielding material which is light in weight, compressible and conductive, and is commonly used for providing conductive connection and shielding at a gap in electronic and electrical equipment. For example, the conductive foam is used to connect the grounding point of the circuit board with the metal housing or component, thereby achieving the uniformity of the system ground potential and reducing the electromagnetic radiation of the circuit board. In addition, the screen and the keyboard of the mobile phone and the notebook computer can also discharge ESD static electricity to the product grounding wire by using conductive foam, so that the antistatic capability of the product is improved.
In order to avoid the huge loss caused by accidents or fires caused by short circuits, besides good conductivity and electromagnetic shielding performance, the conductive foam is required to have good flame retardant performance, so that flame propagation can be effectively prevented, and the core product is protected from being destroyed.
In the prior art, in order to improve the flame retardant performance of the conductive foam, a flame retardant layer is generally arranged between the conductive cloth and the foam body. For example, chinese patent application No. CN201710896641.3 discloses a multilayer conductive foam with fire retardant performance, including foam body and conductive cloth, conductive cloth wraps up the surface at the foam body, the foam body includes first conductive glue layer, foam layer, metal layer, the second conductive glue layer that from bottom to top set gradually, the foam layer includes the cotton layer of multilayer components of a whole that can function independently bubble, is equipped with the enhancement layer between two adjacent components of a whole that can function independently bubble cotton layers, and the outside of conductive cloth is equipped with insulating layer and fire-retardant layer from inside to outside in proper order, the insulating layer is formed by the thermal-insulated coating spraying, and the fire-retardant layer is formed by the fire-retardant coating spraying, utilizes insulating layer and fire-retardant layer to reach fire-retardant and prevent the purpose of fire source to diffusion all around.
The flame-retardant layer arranged between the conductive cloth and the foam body can play a flame-retardant role on the conductive foam, but there are problems that, for example, the flame-retardant layer may reduce the conductivity of the conductive layer, and the flame-retardant layer may fall off along with the change of vibration and working temperature. Therefore, it is necessary to develop a flame-retardant conductive foam and a preparation process thereof, and under the premise of ensuring conductivity, the flame-retardant property of the conductive foam is improved by improving the formula of the foam and arranging a flame-retardant layer between the conductive cloth and the flame-retardant foam, and the flame-retardant grade of the prepared conductive foam reaches UL94-HF1.
Disclosure of Invention
The invention aims to: in order to overcome the defects, the invention aims to provide the flame-retardant conductive foam and the preparation process thereof, the flame-retardant conductive foam has a simple structure, the flame-retardant property of the conductive foam is improved by improving the formula of the foam and arranging the flame-retardant layer between the conductive cloth and the flame-retardant foam, the flame-retardant grade of the prepared conductive foam reaches UL94-HF1, and the flame-retardant conductive foam has a wide application prospect.
The invention aims at realizing the following technical scheme:
A flame-retardant conductive foam comprises flame-retardant foam and conductive cloth; the outer layer of the flame-retardant foam is coated with conductive cloth; a flame-retardant layer is arranged in the conductive cloth and between the flame-retardant foam cotton;
Wherein, the flame-retardant foam comprises the following components in parts by weight: 25-35 parts of 107 silicon rubber, 15-25 parts of hexagonal boron nitride powder, 15-20 parts of composite flame retardant, 8-10 parts of methyl end-capped hydrogen-containing silicone oil, 5-8 parts of carbon nano tube, 3-5 parts of vinyl end-capped silicone oil, 3-5 parts of methyl end-capped silicone oil with vinyl in side chain, 3-5 parts of fumed silica, 1-3 parts of inhibitor, 0.5-1 part of anti-aging agent and 0.5-1 part of platinum catalyst; the flame-retardant layer is prepared by coating flame-retardant liquid on the outer surface of the flame-retardant foam in a layer-by-layer self-assembly manner.
The flame-retardant conductive foam disclosed by the invention is simple in structure, the flame retardant property of the conductive foam is improved by improving the formula of the foam and arranging the flame retardant layer between the conductive cloth and the flame-retardant foam, and the flame retardant grade of the prepared conductive foam reaches UL94-HF1.
The flame-retardant foam is prepared by compounding 107 silicon rubber serving as a raw material, hexagonal boron nitride powder and a carbon nano tube serving as a heat-conducting filler, a composite flame retardant serving as a flame retardant, methyl-terminated hydrogen-containing silicone oil and vinyl-terminated silicone oil containing vinyl in side chains serving as a cross-linking agent, gas-phase white carbon black, an inhibitor, an anti-aging agent and a platinum catalyst auxiliary agent, and has the advantages of rapid foaming, a closed-pore structure, uniform cell size, uniform distribution, flame retardant grade reaching UL94-HF1, heat conductivity higher than 0.3/W (m.K) -1, excellent mechanical property and buffering, flame retardance and heat conduction.
Further, the flame-retardant conductive foam comprises the following components in parts by weight: 50-60 parts of flame retardant Exolit AP, 25-35 parts of aluminum hydroxide powder and 45-15 parts of flame retardant Exolit RP 6145.
According to the invention, the flame retardant Exolit AP, the aluminum hydroxide powder and the flame retardant Exolit RP are compounded, the flame retardant ExolitAP is a non-halogen additive flame retardant based on ammonium polyphosphate, the effect is exerted through the synergistic effect of phosphorus and nitrogen, the aluminum hydroxide powder can not fully burn conductive foam for energy-saving flame retardance through water loss and heat absorption and temperature reduction, the flame retardant Exolit RP is red phosphorus with high phosphorus content, so that the flame retardance is good, and the flame retardant is synergistic with the aluminum hydroxide powder.
Further, the flame-retardant conductive foam is characterized in that the conductive cloth is made of polyimide conductive fabric, and the polyimide conductive fabric is plain weave fabric made of polyimide fibers along the radial direction of the conductive foam and metal-plated polyimide fibers along the circumferential direction of the cross section of the conductive foam; the metal-plated polyimide fiber is any one of copper plating, nickel, silver and gold plating of the polyimide fiber, and the thickness of a metal layer of the metal-plated polyimide fiber is 0.1-2.0 mu m.
The conductive layer is made of polyimide conductive fabric and is made of polyimide fibers and metal-plated polyimide fibers, the LOI of the polyimide fibers can reach more than 45%, the polyimide fibers are not burnt, the polyimide fibers can shrink and carbonize rapidly under the flame of more than 300 ℃, certain strength can be kept, the metal-plated polyimide fibers have excellent conductive performance, and the conductive performance of the conductive fabric is ensured, the consumption of the metal-plated polyimide fibers is reduced, and the cost is reduced through the orientation of the polyimide fibers and the metal-plated polyimide fibers.
Further, in the flame-retardant conductive foam, the viscosity of the 107 silicon rubber is 10000-20000 mPa.s; the active hydrogen mole fraction of the methyl end-capped hydrogen-containing silicone oil is 0.8-1.6%; the viscosity of the vinyl-terminated silicone oil is 10000-20000 mPas, and the vinyl mole fraction is 0.5-1.0%; the viscosity of the methyl end-capped silicone oil with vinyl groups in the side chains is 10000-20000 mPas, and the molar fraction of the vinyl groups is 0.3-0.8%; the average grain diameter of the hexagonal boron nitride powder is 5-10 mu m; the average grain diameter of the carbon nano tube is 5-10nm; the fumed silica adopts fumed silica A380; the inhibitor is ethynyl cyclohexanol; the anti-aging agent is anti-aging agent BHT; the platinum catalyst is KE-808.
Further, the flame-retardant conductive foam is characterized in that a plurality of accommodating holes for accommodating the buffer columns are uniformly formed in the flame-retardant foam, and the buffer columns are arranged in the accommodating holes.
Further, in the flame-retardant conductive foam, the buffer column is in a trapezoid round table or trapezoid prismatic table structure, and the accommodating hole is in an inverted trapezoid round table or inverted trapezoid prismatic table structure.
The buffer damping capacity of the conductive foam can be improved through the matching design of the accommodating holes and the buffer columns, the shapes of the accommodating holes and the buffer columns are easy to mechanically operate during manufacturing, and the self structure stability can be maintained when the conductive foam is stressed.
The invention also relates to a preparation process of the flame-retardant conductive foam, which comprises the following steps:
(1) Preparing flame-retardant foam: adding 107 silicon rubber, vinyl-terminated silicone oil and methyl-terminated silicone oil with vinyl-terminated side chains into a stirrer for stirring, sequentially adding hexagonal boron nitride powder, a composite flame retardant, a carbon nano tube, fumed silica, an inhibitor and an anti-aging agent, continuously stirring until uniformly mixed, sequentially adding methyl-terminated hydrogen-terminated silicone oil and a platinum catalyst, continuously stirring until uniformly mixed, vacuumizing at the same time, removing air, finally coating the mixed material on the surface of a PET release film at 20 ℃, placing the mixed material in the air for 10-15min, and gradually foaming and forming the mixed material to obtain flame-retardant foam;
(2) Preparation of the flame retardant layer: soaking the flame-retardant foam in 0.1M nitric acid solution for 5-10min, washing with deionized water for 1-3min, and soaking the flame-retardant foam in 1% PAA solution for 1-3min; sequentially and alternately immersing the flame-retardant foam into a polyethyleneimine solution, a beta-ferric oxide hydroxide solution and a sodium alginate solution for layer-by-layer self-assembly, wherein each immersing process lasts for 1-3min, then washing for 1-3min by adopting deionized water, wringing to remove excessive water, and obtaining a layer of self-assembly, and the number of layers of the layer-by-layer self-assembly is 3-5; when the number of layers required is reached, placing the flame-retardant foam in an oven at 400-700 ℃ for drying overnight;
(3) Preparing conductive foam: and (3) compounding and forming the conductive cloth and the flame-retardant foam with the flame-retardant layer to obtain the conductive foam.
According to the invention, a three-component assembly method is adopted to assemble the flame-retardant layer, in this way, the polyethyleneimine, the beta-hydroxy ferric oxide and the sodium alginate are combined together through electrostatic adsorption force, particularly, the mutual diffusion effect between a polyethyleneimine molecular chain and a sodium alginate molecular chain can be achieved, the charge density of the surface of the beta-hydroxy ferric oxide can be increased, so that the adsorption force of the beta-hydroxy ferric oxide is enhanced, the beta-hydroxy ferric oxide can be embedded and well distributed in a polymer coating formed by the polyethyleneimine/the sodium alginate, so that the beta-hydroxy ferric oxide can be well dispersed on the surface of the flame-retardant foam, a closely-stacked reticular structure is formed, the reticular structure can well play a blocking effect, release of combustible gas generated during combustion is delayed, the flame-retardant effect is good, and the structure of the conductive foam itself cannot be damaged.
Further, the preparation process of the flame-retardant conductive foam, the preparation of the flame-retardant layer 3, further comprises the following steps:
(1) Polyethyleneimine solution: adding polyethylenimine into deionized water, adjusting the pH value to 8.5-9.5 by using 1M hydrochloric acid or sodium hydroxide, and stirring for 24 hours to prepare a polyethylenimine solution with the concentration of 5-10 mg/mL;
(2) Beta-iron oxyhydroxide solution: dispersing beta-ferric hydroxide powder into deionized water, regulating the pH value to 8.5-9.5 by sodium hydroxide, and stirring for 24 hours to prepare 8-13mg/mL polyethyleneimine solution;
(3) Sodium alginate solution: dispersing sodium alginate in deionized water, and stirring to dissolve to obtain sodium alginate solution of 2-5 mg/mL.
Compared with the prior art, the invention has the following beneficial effects:
(1) The flame-retardant conductive foam disclosed by the invention is simple in structure, the flame retardant property of the conductive foam is improved by improving the formula of the foam and arranging the flame retardant layer between the conductive cloth and the flame-retardant foam, and the flame retardant grade of the prepared conductive foam reaches UL94-HF1;
(2) The invention discloses flame-retardant conductive foam, which is prepared by compounding 107 silicon rubber serving as a raw material, hexagonal boron nitride powder and carbon nano tubes serving as heat conducting fillers, a composite flame retardant serving as a flame retardant, methyl-terminated hydrogen-containing silicone oil and vinyl-terminated silicone oil with vinyl-terminated side chains serving as a cross-linking agent, gas-phase white carbon black, an inhibitor, an anti-aging agent and a platinum catalyst auxiliary agent, and has the advantages of quick foaming, closed-pore structure, uniform cell size, uniform distribution, flame retardant grade reaching UL94-HF1, thermal conductivity of more than 0.3/W (m.K) -1 and excellent mechanical property;
(3) The flame-retardant conductive foam disclosed by the invention has the advantages that the conductive layer is made of polyimide conductive fabric and is made of polyimide fibers and metal-plated polyimide fibers, the flame retardance is good, the conductive performance of the conductive fabric is ensured, the consumption of the metal-plated polyimide fibers is reduced, and the cost is reduced by the orientation of the polyimide fibers and the metal-plated polyimide fibers;
(4) The preparation process of the flame-retardant conductive foam is simple, the flame-retardant layer is assembled by adopting a three-component assembly method, and the flame-retardant conductive foam is green and environment-friendly, and in the mode, the polyethyleneimine, the beta-ferric oxide hydroxide and the sodium alginate are combined together through electrostatic adsorption force to form a closely-stacked reticular structure, so that the reticular structure can well play a blocking effect, delay the release of combustible gas generated during combustion, have a better flame-retardant effect and can not destroy the structure of the conductive foam.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment 1 of a flame retardant conductive foam according to the present invention;
FIG. 2 is a schematic cross-sectional view of example 2 of the flame retardant conductive foam of the present invention;
fig. 3 is a schematic structural view of a buffer column of embodiment 2 of the flame retardant conductive foam of the present invention;
in the figure: the flame-retardant foam 1, the buffer posts 11, the accommodating holes 12, the conductive cloth 2 and the flame-retardant layer 3.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely by referring to fig. 1-3, examples 1-2, example 3 and comparative examples 1-3, example 4, example 5, and by referring to specific experimental data, it is apparent that the described embodiments are only some, but not all, embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Examples 1-2 below provide a flame retardant conductive foam.
Example 1
As shown in fig. 1, the flame-retardant conductive foam comprises flame-retardant foam 1 and conductive cloth 2; the outer layer of the flame-retardant foam 1 is coated with conductive cloth 2; a flame-retardant layer 3 is arranged in the conductive cloth 2 and between the flame-retardant foam 1.
Example 2
As shown in fig. 2 and 3, the flame-retardant conductive foam of the invention is provided with a plurality of containing holes 12 for containing the buffer columns 11 uniformly in the flame-retardant foam 1, the buffer columns 11 are arranged in the containing holes 12, the buffer columns 11 are of a trapezoid pyramid structure, and the containing holes 12 are of an inverted trapezoid pyramid structure. The matching design of the accommodating hole 12 and the buffer column 11 can improve the buffering and damping capacity of the conductive foam, and the shapes of the accommodating hole 12 and the buffer column 11 are easy to mechanically operate during manufacturing, and can maintain the self structural stability when the conductive foam is stressed.
The following example 3 and comparative example 1 provide a foam.
Example 3
The flame-retardant foam 1 comprises the following components in parts by weight: the flame retardant comprises, by weight, 32 parts of 107 silicon rubber, 17 parts of hexagonal boron nitride powder, 15 parts of a composite flame retardant, 9 parts of methyl-terminated hydrogen-containing silicone oil, 6 parts of carbon nanotubes, 4 parts of vinyl-terminated silicone oil, 4 parts of methyl-terminated silicone oil with vinyl-containing side chains, 4 parts of fumed silica, 2 parts of an inhibitor, 0.6 part of an anti-aging agent and 0.8 part of a platinum catalyst. The composite flame retardant comprises the following components in parts by weight: 750 parts of flame retardant Exolit AP, 25 parts of aluminum hydroxide powder and 614 parts of flame retardant Exolit RP 10.
Wherein the viscosity of the 107 silicon rubber is 16000 mPa.s; the active hydrogen mole fraction of the methyl end-capped hydrogen-containing silicone oil is 1.5%; the viscosity of the vinyl-terminated silicone oil is 20000 mPas, and the vinyl mole fraction is 0.8%; the viscosity of the methyl end-capped silicone oil with the vinyl group at the side chain is 18000 mPas, and the molar fraction of the vinyl group is 0.6%; the average grain diameter of the hexagonal boron nitride powder is 6 mu m; the average particle diameter of the carbon nano tube is 6nm; the fumed silica adopts fumed silica A380; the inhibitor is ethynyl cyclohexanol; the anti-aging agent is anti-aging agent BHT; the platinum catalyst is KE-808. The raw materials are all common raw materials in the commercial foam industry.
Preparation of the flame-retardant foam 1: adding the 107 silicon rubber, vinyl-terminated silicone oil and methyl terminated silicone oil with vinyl-terminated side chains into a stirrer together for stirring, sequentially adding hexagonal boron nitride powder, a composite flame retardant, a carbon nano tube, fumed silica, an inhibitor and an anti-aging agent, continuously stirring until uniformly mixed, sequentially adding methyl terminated hydrogen-containing silicone oil and a platinum catalyst, continuously stirring until uniformly mixed, vacuumizing simultaneously, removing air, finally coating the mixed material on the surface of a PET release film at 20 ℃, placing the mixed material in the air for 15min, and gradually foaming and forming the mixed material to obtain the flame-retardant foam 1.
Comparative example 1
Comparative example 1 is polyurethane foam DW30 from Jiangsu green materials, inc.
Comparative example 2
Comparative example 2 is PE foam from Suzhou industrial park ark plastic packaging company, inc.
Comparative example 3
Comparative example 3 is PP foam from the soviet industrial park ark plastic package company, inc.
The following example 4 provides a flame retardant foam 1 with a flame retardant layer 3.
Wherein, raw materials such as polyethyleneimine, hydrochloric acid, sodium hydroxide, beta-ferric hydroxide powder, sodium alginate, nitric acid and the like are all common raw materials in the market industry.
Example 4
The preparation of the flame-retardant foam 1 with the flame-retardant layer 3 comprises the following steps:
(1) Adding polyethylenimine into deionized water, regulating the pH value to about 9 by using 1M hydrochloric acid or sodium hydroxide, and stirring for 24 hours to prepare 8mg/mL polyethylenimine solution; beta-iron oxyhydroxide solution: dispersing beta-ferric hydroxide powder into deionized water, regulating the pH value to about 9 by using sodium hydroxide, and stirring for 24 hours to prepare a 12mg/mL polyethyleneimine solution; dispersing sodium alginate in deionized water, and stirring until the sodium alginate is dissolved to prepare a sodium alginate solution with the concentration of 4 mg/mL;
(2) Soaking the flame-retardant foam of the embodiment 3 in 0.1M nitric acid solution for 5-10min, washing with deionized water for 1-3min, and soaking the flame-retardant foam in 1% PAA solution for 2min; sequentially and alternately immersing the flame-retardant foam into a polyethyleneimine solution, a beta-ferric oxide hydroxide solution and a sodium alginate solution for layer-by-layer self-assembly, wherein each immersing process lasts for 3min, then washing for 1-3min by adopting deionized water, wringing to remove excessive water, and obtaining a layer of self-assembly, wherein the number of layers of the layer-by-layer self-assembly is 4; when the number of layers required is reached, the flame retardant foam is placed in an oven at 650 ℃ and dried overnight to give flame retardant foam 1 with flame retardant layer 3.
Example 5 below provides a conductive foam.
Example 5
The conductive foam is obtained by compounding and molding the conductive cloth 2 and the flame-retardant foam 1 with the flame-retardant layer 3 in the embodiment 4. The conductive cloth 2 is a polyimide conductive fabric, the polyimide conductive fabric is a plain weave fabric (the surface density is 180g/m 2) which is prepared from polyimide fibers (50 wt%) along the radial direction of conductive foam and silver-plated polyimide fibers (50 wt%) along the circumferential direction of the cross section of the conductive foam, and the thickness of silver-plated layers of the silver-plated polyimide fibers is 1.0 mu m.
And (3) effect verification:
The foam of example 3 and comparative examples 1 to 3 was subjected to a flame retardant UL94 foam horizontal burning test according to Standard "GB/T8332-2008 foam burning property test method horizontal burning method", and the test results are shown in Table 1.
TABLE 1 flame retardant Property test results
| Flame retardant rating | |
| Example 3 | UL94-HF1 |
| Comparative example 1 | UL94-HF2 |
| Comparative example 2 | UL94-HF2 |
| Comparative example 3 | UL94-HF2 |
As can be obtained from Table 1, the flame retardant foam prepared by the invention has better flame retardant property than polyurethane foam DW30, PE foam and PP foam commonly used in the prior art.
The mechanical properties of the flame retardant foam of example 3 and the flame retardant foam 1 with flame retardant layer 3 of example 4 were then carried out according to the standard GB/T15048-1994 rigid foam compression creep test method, the test results being shown in Table 2.
TABLE 2 mechanical test results
| Compressive strength (MPa) | Modulus of elasticity (Mpa) | |
| Example 3 | 1.13 | 32.41 |
| Example 4 | 1.12 | 32.38 |
As can be seen from table 2, the mechanical properties of the flame retardant foam are not affected by the flame retardant layer prepared by coating the outer surface of the flame retardant foam layer by layer self-assembly.
Then, the thermal stability of the flame retardant foam of example 3 and the flame retardant foam 1 with flame retardant layer 3 of example 4 was examined using a TGA 5500 analyzer, comprising transferring 5-8mg of sample powder into a platinum pan, performing a test at a heating rate of 10 ℃/min under a nitrogen flow, and raising the test temperature from room temperature to 800 ℃ to obtain mass loss at 300 ℃ and 500 ℃ and the test results are shown in table 3.
TABLE 3 thermal stability test results
| Mass loss at 300 ℃ (%) | Loss of mass at 500 ℃ (%) | |
| Example 3 | 24 | 50 |
| Example 4 | 20 | 48 |
As can be seen from table 3, the flame retardant foam 1 with the flame retardant layer 3 of example 4 has better thermal stability than the flame retardant foam of example 3, mainly because the polyethyleneimine- β -iron oxyhydroxide-sodium alginate network structure formed on the surface of the flame retardant foam 1 has a blocking effect on volatile gases generated by cracking the flame retardant foam 1 during the anoxic thermal degradation process, thereby improving thermal stability.
Then, according to the test of the volume resistivity of the conductive foam of the embodiment 5 of GB/T22042-2008 garment antistatic property surface resistivity test method, the test result is that the volume resistivity is 38Ω & cm, which indicates that the conductive foam of the embodiment 5 has better conductive property.
There are many ways in which the invention may be practiced, and what has been described above is merely a preferred embodiment of the invention. It should be noted that the above examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that modifications may be made without departing from the principles of the invention, and such modifications are intended to be within the scope of the invention.
Claims (7)
1. The flame-retardant conductive foam is characterized by comprising flame-retardant foam (1) and conductive cloth (2); the outer layer of the flame-retardant foam (1) is coated with conductive cloth (2); a flame-retardant layer (3) is arranged in the conductive cloth (2) and between the flame-retardant foam (1);
Wherein, the flame-retardant foam (1) comprises the following components in parts by weight: 25-35 parts of 107 silicon rubber, 15-25 parts of hexagonal boron nitride powder, 15-20 parts of composite flame retardant, 8-10 parts of methyl end-capped hydrogen-containing silicone oil, 5-8 parts of carbon nano tube, 3-5 parts of vinyl end-capped silicone oil, 3-5 parts of methyl end-capped silicone oil with vinyl in side chain, 3-5 parts of fumed silica, 1-3 parts of inhibitor, 0.5-1 part of anti-aging agent and 0.5-1 part of platinum catalyst; the flame-retardant layer (3) is prepared by coating flame-retardant liquid on the outer surface of the flame-retardant foam (1) in a layer-by-layer self-assembly manner;
The preparation process of the flame-retardant conductive foam comprises the following steps:
(1) Preparing flame-retardant foam: adding 107 silicon rubber, vinyl-terminated silicone oil and methyl-terminated silicone oil with vinyl-terminated side chains into a stirrer for stirring, sequentially adding hexagonal boron nitride powder, a composite flame retardant, a carbon nano tube, fumed silica, an inhibitor and an anti-aging agent, continuously stirring until uniformly mixed, sequentially adding methyl-terminated hydrogen-terminated silicone oil and a platinum catalyst, continuously stirring until uniformly mixed, vacuumizing at the same time, removing air, finally coating the mixed material on the surface of a PET release film at 20 ℃, placing the mixed material in the air for 10-15min, and gradually foaming and forming the mixed material to obtain flame-retardant foam;
(2) Preparation of the flame retardant layer: soaking the flame-retardant foam in 0.1M nitric acid solution for 5-10min, washing with deionized water for 1-3min, and soaking the flame-retardant foam in 1% PAA solution for 1-3min; sequentially and alternately immersing the flame-retardant foam into a polyethyleneimine solution, a beta-ferric oxide hydroxide solution and a sodium alginate solution for layer-by-layer self-assembly, wherein each immersing process lasts for 1-3min, then washing for 1-3min by adopting deionized water, wringing to remove excessive water, and obtaining a layer of self-assembly, and the number of layers of the layer-by-layer self-assembly is 3-5; when the number of layers required is reached, placing the flame-retardant foam in an oven at 400-700 ℃ for drying overnight;
(3) Preparing conductive foam: and (3) compounding and forming the conductive cloth (2) and the flame-retardant foam (1) with the flame-retardant layer (3) to obtain the conductive foam.
2. The flame-retardant conductive foam according to claim 1, wherein the composite flame retardant comprises the following components in parts by mass: 50-60 parts of flame retardant Exolit AP, 25-35 parts of aluminum hydroxide powder and 5-15 parts of flame retardant Exolit RP 614.
3. The flame retardant conductive foam according to claim 1, wherein the conductive cloth (2) is a polyimide conductive fabric, and the polyimide conductive fabric is a plain weave fabric made of polyimide fibers along the radial direction of the conductive foam and metal-plated polyimide fibers along the circumferential direction of the cross section of the conductive foam; the metal-plated polyimide fiber is any one of copper plating, nickel, silver and gold plating of the polyimide fiber, and the thickness of a metal layer of the metal-plated polyimide fiber is 0.1-2.0 mu m.
4. The flame retardant conductive foam according to claim 1, wherein the viscosity of the 107 silicone rubber is 10000-20000 mPa-s; the active hydrogen mole fraction of the methyl end-capped hydrogen-containing silicone oil is 0.8-1.6%; the viscosity of the vinyl-terminated silicone oil is 10000-20000 mPas, and the vinyl mole fraction is 0.5-1.0%; the viscosity of the methyl end-capped silicone oil with vinyl groups in the side chains is 10000-20000 mPas, and the molar fraction of the vinyl groups is 0.3-0.8%; the average grain diameter of the hexagonal boron nitride powder is 5-10 mu m; the average grain diameter of the carbon nano tube is 5-10nm; the fumed silica adopts fumed silica A380; the inhibitor is ethynyl cyclohexanol; the anti-aging agent is anti-aging agent BHT; the platinum catalyst is KE-808.
5. Flame-retardant conductive foam according to claim 1, characterized in that a plurality of accommodating holes (12) for accommodating buffer columns (11) are uniformly arranged in the flame-retardant foam (1), and the buffer columns (11) are arranged in the accommodating holes (12).
6. The flame-retardant conductive foam according to claim 5, wherein the buffer column (11) is a trapezoid round table or trapezoid prismatic table structure, and the accommodating hole (12) is an inverted trapezoid round table or inverted trapezoid prismatic table structure.
7. The process for preparing the flame-retardant conductive foam according to claim 1, characterized in that the preparation of the flame-retardant layer (3) further comprises the following steps:
(1) Polyethyleneimine solution: adding polyethylenimine into deionized water, adjusting the pH value to 8.5-9.5 by using 1M hydrochloric acid or sodium hydroxide, and stirring for 24 hours to prepare a polyethylenimine solution with the concentration of 5-10 mg/mL;
(2) Beta-iron oxyhydroxide solution: dispersing beta-ferric hydroxide powder into deionized water, regulating the pH value to 8.5-9.5 by sodium hydroxide, and stirring for 24 hours to prepare 8-13mg/mL polyethyleneimine solution;
(3) Sodium alginate solution: dispersing sodium alginate in deionized water, and stirring to dissolve to obtain sodium alginate solution of 2-5 mg/mL.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109575605A (en) * | 2018-12-18 | 2019-04-05 | 广德艾森新材料科技有限公司 | A kind of flame retardant silica gel foam and preparation method thereof |
| CN111016349A (en) * | 2019-11-26 | 2020-04-17 | 深圳市象形科技有限公司 | Flame-retardant weather-resistant conductive foam |
| CN217160362U (en) * | 2022-03-01 | 2022-08-09 | 苏州旺顺源光电科技有限公司 | Composite flame-retardant conductive foam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003096223A (en) * | 2001-09-21 | 2003-04-03 | Dow Corning Toray Silicone Co Ltd | Silicone rubber sponge-forming composition, silicone rubber sponge and process for producing same |
| JP2019172903A (en) * | 2018-03-29 | 2019-10-10 | 積水化学工業株式会社 | Thermally conductive foam and thermally conductive foam adhesive sheet |
| CN109679352A (en) * | 2018-12-28 | 2019-04-26 | 深圳德邦界面材料有限公司 | A kind of conducting foam and preparation method thereof |
| CN111057378A (en) * | 2019-12-26 | 2020-04-24 | 肇庆皓明有机硅材料有限公司 | Foamed silicone rubber foam and preparation method and application thereof |
| CN111417295A (en) * | 2020-03-06 | 2020-07-14 | 南昌欧菲生物识别技术有限公司 | Conductive foam, ultrasonic fingerprint module, display screen assembly and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111016349A (en) * | 2019-11-26 | 2020-04-17 | 深圳市象形科技有限公司 | Flame-retardant weather-resistant conductive foam |
| CN217160362U (en) * | 2022-03-01 | 2022-08-09 | 苏州旺顺源光电科技有限公司 | Composite flame-retardant conductive foam |
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