CN109504019B - Cable filling strip with anti-electromagnetic interference function and excellent thermal conductivity and preparation method thereof - Google Patents
Cable filling strip with anti-electromagnetic interference function and excellent thermal conductivity and preparation method thereof Download PDFInfo
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- CN109504019B CN109504019B CN201811219429.4A CN201811219429A CN109504019B CN 109504019 B CN109504019 B CN 109504019B CN 201811219429 A CN201811219429 A CN 201811219429A CN 109504019 B CN109504019 B CN 109504019B
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- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
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Abstract
A cable filler strip having an anti-electromagnetic interference function and excellent thermal conductivity, comprising the following components in parts by weight: thermoplastic elastomer, petroleum resin, graphite powder, filter material, flame retardant and auxiliary agent. The cable filling strip with the anti-electromagnetic interference function and the excellent heat conduction performance can absorb most of electromagnetic waves projected on the surface of the cable filling strip by adopting the electromagnetic wave absorption material, converts the electromagnetic energy into heat energy or energy in other forms through the electric or magnetic loss of the material to be consumed, has small reflection, scattering and transmission, can have excellent anti-electromagnetic interference performance while meeting the requirements of the traditional cable filling strip on flame retardant performance, heat conduction performance and physical and mechanical properties, and avoids the problem of signal crosstalk among leads caused by larger fractional capacitance and mutual inductance among core wires.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and relates to a cable filling strip with an anti-electromagnetic interference function and excellent thermal conductivity and a preparation method thereof.
Background
In electronic devices and systems, various cables are indispensable connection links for signal transmission, and the cables are major factors causing various electromagnetic compatibility (EMC) problems. The parallel transmission distance of the wires in the cable is long, so that large subsection capacitance and mutual inductance exist between core wires, which can cause signal crosstalk between the wires and also can cause unnecessary electromagnetic pollution to the surrounding environment. In the production process of the cable, in order to ensure the roundness of the cable and avoid the mutual friction between the core wires, a cable filling strip is generally required to be added between the core wires. The filling material commonly used at present for preparing the cable filling strip comprises a halogen-containing flame-retardant material, a non-flammable glass fiber material or a flame-retardant rock wool rope and the like, the requirements of the filling material on flame retardance and various physical properties are met, but a corresponding solution is not provided for the anti-electromagnetic interference problem, meanwhile, the heat dissipation performance of the traditional filling material is poor, in the transmission process, the cable can emit heat outwards, and the transmission capacity of the cable and the loss of rated current in conductors with the same cross section can be influenced.
At present, the traditional cable filling strip is usually designed by adopting glass fiber materials, halogen-containing flame retardant materials or flame retardant rock wool ropes and other materials, whether the flame retardant performance and the physical and mechanical performance of the traditional cable filling strip meet the requirements or not is mainly considered, a corresponding solution is not provided for the problem of electromagnetic interference resistance, meanwhile, the traditional filling material is poor in heat dissipation performance, and in the transmission process, the cable can emit heat outwards, so that the transmission capacity of the cable and the loss of rated current in conductors with the same cross section can be influenced.
The disadvantages and reasons of the prior art cable filler strip are as follows:
1) for the problem of crosstalk of signals between wires, the anti-electromagnetic interference capability is not provided effectively;
2) the heat conduction and heat dissipation performance of the filler strip made of the traditional filler material is poor;
3) the production process is relatively complex and tedious.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention aims to provide a cable filling strip with an anti-electromagnetic interference function and excellent thermal conductivity and a method for preparing the cable filling with the anti-electromagnetic interference function and excellent thermal conductivity.
The technical scheme is as follows: the invention provides a cable filling strip with an anti-electromagnetic interference function and excellent thermal conductivity, which comprises the following components in parts by weight: 20-100 parts of thermoplastic elastomer, 20-100 parts of petroleum resin, 20-80 parts of graphite powder, 10-50 parts of filter material, 10-50 parts of flame retardant and 10-50 parts of auxiliary agent. The cable filling strip with the anti-electromagnetic interference function and the excellent heat conduction performance can absorb most of electromagnetic waves projected on the surface of the cable filling strip by adopting an electromagnetic wave absorbing material (called a filter material for short), converts the electromagnetic energy into heat energy or energy in other forms through the electric or magnetic loss of the material to be consumed, has very small reflection, scattering and transmission, can meet the requirements of the traditional cable filling strip on flame retardant performance, heat conduction performance and physical and mechanical properties, has excellent anti-electromagnetic interference performance, and avoids the problem of signal crosstalk among leads caused by larger fractional capacitance and mutual inductance among core wires.
Further, the cable filler strip with electromagnetic interference resistance and excellent thermal conductivity comprises one or more of styrene (SBS, SIS, SEBS, SEPS), olefin (TP0, TPV, APAO), diene (TPB, TPI), vinyl chloride (TPVC, TCPE), urethane (TPU), ester (TPEE), amide (TPAE), organic fluorine (TPF), silicone and vinyl.
Further, the cable filler strip with anti-electromagnetic interference function and excellent thermal conductivity comprises petroleum resin (including one or more of aliphatic resin (C5), cycloaliphatic resin (DCPD), aromatic resin (C9), aliphatic/aromatic copolymer resin (C5/C9), hydrogenated petroleum resin, C5 hydrogenated petroleum resin and C9 hydrogenated petroleum resin.
Furthermore, the cable filler strip with the anti-electromagnetic interference function and the excellent thermal conductivity comprises ferrite, metal micro powder, barium titanate, silicon carbide, graphite and conductive fibers.
Further, the cable filling strip with the anti-electromagnetic interference function and the excellent heat conductivity comprises a halogen flame retardant, a phosphorus flame retardant, a nitrogen flame retardant, a phosphorus-halogen flame retardant and a phosphorus-nitrogen flame retardant. The flame retardant may be selected from halogen flame retardants, phosphorus flame retardants, nitrogen flame retardants, phosphorus-halogen flame retardants, phosphorus-nitrogen flame retardants, and the like, as required. Among these, there are alkyl phosphates: tributyl phosphate, tris (2-ethylhexyl) phosphate, tris (2-chloroethyl) phosphate, tris (2, 3-dichloropropyl) phosphate, tris (2, 3-dibromopropyl) phosphate, Pyrol99, and the like; aryl phosphate ester: toluene-diphenyl phosphate, tricresyl phosphate, triphenyl phosphate, 2-ethylhexyl-diphenyl phosphate, and the like. Dicyclopentadiene group: chlordanic anhydride, etc.; aliphatic bromides: aromatic bromides such as dibromomethane, trichlorobromomethane, dichlorobromomethane, octabromodiphenyl oxide, pentabromoethylbenzene, tetrabromobisphenol A, and other halogenated compounds. And also tris (dibromopropyl) phosphate, and halogenated cyclohexane and derivatives thereof, decabromodiphenyl ether and derivatives thereof. Examples of the inorganic flame retardant include tellurium compounds, aluminum hydroxide, magnesium hydroxide, and borates.
The flame retardant is preferably an organic nitrogen flame retardant, for example, triazine and derivatives thereof, melamine and other nitrogen flame retardants are melamine and phosphorus compounds thereof, mainly melamine, melamine cyanuric acid and melamine phosphate. The nitrogen-based flame retardant is generally white crystalline fine powder, has a particle size of 10 to 50 μm, and is easily dispersible. The density is 1.5 cm-1.7 g/cm. Nitrogen-based flame retardants have many advantages: high-efficiency flame retardance; no halogen; no corrosion effect is caused, so that the problem that the machine is corroded is reduced; ultraviolet illumination resistance; the electrical property is good, and the advantages are most obvious in electronic and electrical products; the color is not faded and frost is not sprayed; can be recycled.
Furthermore, the cable filling strip with the anti-electromagnetic interference function and the excellent thermal conductivity comprises naphthenic oil, an antioxidant, a defoaming agent, a plasticizer and a foaming agent.
Further, the cable filler strip with the anti-electromagnetic interference function and the excellent thermal conductivity comprises the metal micro powder including Fe-Si metal micro powder, FeNi permalloy metal micro powder, Sendust metal micro powder, FeSiCr iron silicon chromium metal micro powder, FeCuB metal micro powder, FeCuSiBCo metal micro powder, FeCuBNi metal micro powder and FeCuSiBCV metal micro powder. The metal micro powder can be selected according to requirements, belongs to a magnetic loss type absorbent, absorbs electromagnetic noise by means of magnetic hysteresis loss, eddy current loss, residual loss and other polarization mechanisms, and has the characteristics of strong absorption, good effect, thin thickness, wide working frequency band, light weight, high bonding strength and the like.
Furthermore, the cable filler strip with the anti-electromagnetic interference function and the excellent thermal conductivity is characterized in that the filter material is a carbon nano tube. The invention selects the carbon nano tube as the filter material preferably, the carbon nano tube is used as the novel one-dimensional hexagonal nano material, the novel one-dimensional hexagonal nano material has various excellent physical properties such as light weight, high strength, good toughness, excellent heat conducting property and the like, and simultaneously, the carbon nano tube has stronger broadband microwave absorption property due to the special structure of the dielectric property, electromagnetic waves emitted to the surface of the material are absorbed, no reflection is generated, and the performance is excellent.
The invention also provides a preparation method of the cable filling strip with the anti-electromagnetic interference function and the excellent heat conductivity, which comprises the following steps:
1) adding the thermoplastic elastomer, the petroleum resin, the flame retardant and the auxiliary agent into a kneader, controlling the temperature in a kettle at 100-200 ℃ and the rotating speed at 40-80r/min, and kneading at low speed to obtain a flame-retardant mixed colloid A;
2) then adding graphite powder into a kneader uniformly, adjusting the rotating speed to 100-200r/min, carrying out high-speed dispersion and mixing, and mixing and stirring for 60-180min to obtain a graphite composite flame-retardant mixed colloid B;
3) adding the filtering material into the mixed colloid B, and performing high-speed dispersion and mixing at the rotating speed of 100-200r/min for 360min to obtain a composite flame-retardant mixed colloid C in which the filtering material and graphite are dispersed;
4) and transferring the obtained mixed colloid C into a high-temperature extrusion device at the temperature of 120-160 ℃, and cooling, solidifying and molding after extrusion to obtain the cable filling strip with the anti-electromagnetic interference function and the excellent heat conductivity.
The preparation method of the cable filling strip with the anti-electromagnetic interference function and the excellent heat conduction and radiation performance is reasonable, the preparation process is simple, the large-scale production is facilitated, the prepared product is compared with the filling strip made of traditional materials, and the anti-electromagnetic interference performance and the heat conduction and radiation performance of a target product are improved by respectively adding the filter material and the graphite powder through a unique formula design.
The technical scheme shows that the invention has the following beneficial effects: the cable filling strip with the anti-electromagnetic interference function and the excellent heat conduction performance, disclosed by the invention, adopts the filtering material, can provide effective anti-electromagnetic interference performance for a target product, and the heat conduction and heat dissipation performance of the target product can be improved by adding the graphite powder. The raw materials are sequentially added into a kneader to be mixed, the temperature and the rotating speed are controlled, the mixed colloid is obtained after uniform dispersion, and the target product can be obtained after extrusion molding of a high-temperature extruder. Compared with the traditional cable filling strip, the cable filling strip has the following advantages:
1. due to the addition of the filter material, the effective anti-electromagnetic interference capability of a target product can be improved;
2. the heat conduction and radiation performance is good;
3. the production process is simple.
Detailed Description
The following detailed description of embodiments of the invention, which are to be construed as illustrative and not limitative, is given by way of illustration and example only.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1
A cable filler strip having an anti-electromagnetic interference function and excellent thermal conductivity, comprising the following components in parts by weight: 20 parts of SBS thermoplastic elastomer, 20 parts of hydrogenated petroleum resin, 20 parts of graphite powder, 10 parts of ferrite filter material, 10 parts of tributyl phosphate flame retardant and 10 parts of auxiliary agent.
The preparation method of the cable filling strip with the anti-electromagnetic interference function and the excellent heat conduction performance comprises the following steps:
1) adding the thermoplastic elastomer, the hydrogenated petroleum resin, the flame retardant and the auxiliary agent into a kneader, controlling the temperature in a kettle at 100 ℃ and the rotating speed at 40r/min, and kneading at low speed to obtain a flame-retardant mixed colloid A;
2) uniformly adding graphite powder into a kneader, adjusting the rotating speed to 100r/min, carrying out high-speed dispersion and mixing, and mixing and stirring for 60min to obtain a graphite composite flame-retardant mixed colloid B;
3) adding the filter material into the mixed colloid B, and dispersing and mixing at a high speed of 100r/min for 120min to obtain a composite flame-retardant mixed colloid C dispersed with the filter material and graphite;
4) and transferring the obtained mixed colloid C into a high-temperature extrusion device, extruding at 120 ℃, cooling, solidifying and forming to obtain the cable filling strip with the anti-electromagnetic interference function and the excellent heat conductivity.
Example 2
A cable filler strip having an anti-electromagnetic interference function and excellent thermal conductivity, comprising the following components in parts by weight: 100 parts of TPB thermoplastic elastomer, 100 parts of DCPD, 80 parts of graphite powder, 50 parts of carbon nanotube filter material, 50 parts of hydroxyl aluminum flame retardant and 50 parts of auxiliary agent.
The preparation method of the cable filling strip with the anti-electromagnetic interference function and the excellent heat conduction performance comprises the following steps:
1) adding the thermoplastic elastomer, the DCPD, the flame retardant and the auxiliary agent into a kneader, controlling the temperature in a kettle at 200 ℃ and the rotating speed at 40r/min, and kneading at a low speed to obtain a flame-retardant mixed colloid A;
2) uniformly adding graphite powder into a kneader, adjusting the rotating speed to 200r/min, carrying out high-speed dispersion and mixing, and mixing and stirring for 180min to obtain a graphite composite flame-retardant mixed colloid B;
3) adding the filter material into the mixed colloid B, and dispersing and mixing at a high speed of 200r/min for 360min to obtain a composite flame-retardant mixed colloid C dispersed with the filter material and graphite;
4) and transferring the obtained mixed colloid C into a high-temperature extrusion device, extruding at 160 ℃, cooling, solidifying and forming to obtain the cable filling strip with the anti-electromagnetic interference function and the excellent heat conductivity.
Example 3
A cable filler strip having an anti-electromagnetic interference function and excellent thermal conductivity, comprising the following components in parts by weight: 60 parts of TPEE thermoplastic elastomer, 80 parts of C5 hydrogenated petroleum resin, 50 parts of graphite powder, 15 parts of FeCuSiBCV metal micro powder filter material, 30 parts of melamine cyanuric acid flame retardant and 25 parts of auxiliary agent.
The preparation method of the cable filling strip with the anti-electromagnetic interference function and the excellent heat conduction performance comprises the following steps:
1) adding the thermoplastic elastomer, the petroleum resin, the flame retardant and the auxiliary agent into a kneader, controlling the temperature in a kettle at 150 ℃ and the rotating speed at 60r/min, and kneading at a low speed to obtain a flame-retardant mixed colloid A;
2) uniformly adding graphite powder into a kneader, adjusting the rotating speed to 180r/min, carrying out high-speed dispersion and mixing, and mixing and stirring for 90min to obtain a graphite composite flame-retardant mixed colloid B;
3) adding the filter material into the mixed colloid B, and dispersing and mixing at a high speed of 180r/min for 150min to obtain a composite flame-retardant mixed colloid C dispersed with the filter material and graphite;
4) and transferring the obtained mixed colloid C into a high-temperature extrusion device, extruding at the temperature of 150 ℃, cooling, solidifying and forming to obtain the cable filling strip with the anti-electromagnetic interference function and the excellent heat conductivity.
Example 4
A cable filler strip having an anti-electromagnetic interference function and excellent thermal conductivity, comprising the following components in parts by weight: 20 parts of TPAE thermoplastic elastomer, 100 parts of C9 hydrogenated petroleum resin, 40 parts of graphite powder, 30 parts of barium titanate filter material, 50 parts of tricresyl phosphate flame retardant and 10 parts of auxiliary agent.
The preparation method of the cable filling strip with the anti-electromagnetic interference function and the excellent heat conduction performance comprises the following steps:
1) adding the thermoplastic elastomer, the petroleum resin, the flame retardant and the auxiliary agent into a kneader, controlling the temperature in a kettle at 100 ℃, the rotating speed at 80r/min, and kneading at a low speed to obtain a flame-retardant mixed colloid A;
2) uniformly adding graphite powder into a kneader, adjusting the rotating speed to 200r/min, carrying out high-speed dispersion and mixing, and mixing and stirring for 80min to obtain a graphite composite flame-retardant mixed colloid B;
3) adding the filter material into the mixed colloid B, and dispersing and mixing at a high speed of 200r/min for 360min to obtain a composite flame-retardant mixed colloid C dispersed with the filter material and graphite;
4) and transferring the obtained mixed colloid C into a high-temperature extrusion device, extruding at 120 ℃, cooling, solidifying and forming to obtain the cable filling strip with the anti-electromagnetic interference function and the excellent heat conductivity.
Example 5
Polyolefin thermoplastic elastomer APAO, C5 petroleum resin, carbon nano tube, graphite, organic nitrogen flame retardant and other functional additives are sequentially added into a kneader according to the method steps in the embodiment 1, mixed and dispersed evenly, the obtained colloid is transferred to a high-temperature extruder, cooled, solidified and molded to obtain the target product.
The following proportions of the components were confirmed:
the transmission loss was measured on a uniform basis (test standard: GB/T32596-2016) using a sample having a length of 50mm, a width of 10mm and a thickness of 5mm, and the results are shown below:
from the above test results, it can be seen that the higher the ratio of the carbon nanotubes, the higher the transmission loss, and the better the anti-electromagnetic interference performance.
The heat conductivity of the alloy is tested in the same ratio (test standard: GB/T29313-2012), and the test result is as follows:
from the above test results, it can be seen that the higher the proportion of graphite powder, the better the heat conductivity.
Therefore, the cable filling strip can be adjusted according to the performance requirements, the cable filling strips with different performance requirements can be obtained, and the flexibility and the adaptability are good.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (1)
1. The utility model provides a cable filler strip with anti-electromagnetic interference function and good heat conductivity ability which characterized in that: the cable filling strip comprises the following components in parts by weight: 50 parts of polyolefin thermoplastic elastomer, 60 parts of C5 petroleum resin, 40 parts of carbon nano tube, 40 parts of graphite powder, 30 parts of organic nitrogen flame retardant and 23-35 parts of auxiliary agent;
the preparation method of the cable filling strip with the anti-electromagnetic interference function and the excellent heat conduction performance comprises the following steps:
1) adding a polyolefin thermoplastic elastomer, C5 petroleum resin, an organic nitrogen flame retardant and an auxiliary agent into a kneading machine, controlling the temperature in a kettle at 100 ℃, the rotating speed at 40r/min, and kneading at a low speed to obtain a flame-retardant mixed colloid A;
2) uniformly adding graphite powder into a kneader, adjusting the rotating speed to 100r/min, carrying out high-speed dispersion and mixing, and mixing and stirring for 60min to obtain a graphite composite flame-retardant mixed colloid B;
3) adding the carbon nano tube into the mixed colloid B, and dispersing and mixing at a high speed of 100r/min for 120min to obtain a composite flame-retardant mixed colloid C in which the carbon nano tube and the graphite are dispersed;
4) and transferring the obtained mixed colloid C into a high-temperature extrusion device, extruding at 120 ℃, cooling, solidifying and forming to obtain the cable filling strip with the anti-electromagnetic interference function and the excellent heat conductivity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811219429.4A CN109504019B (en) | 2018-10-19 | 2018-10-19 | Cable filling strip with anti-electromagnetic interference function and excellent thermal conductivity and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811219429.4A CN109504019B (en) | 2018-10-19 | 2018-10-19 | Cable filling strip with anti-electromagnetic interference function and excellent thermal conductivity and preparation method thereof |
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| CN109504019A CN109504019A (en) | 2019-03-22 |
| CN109504019B true CN109504019B (en) | 2021-06-04 |
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| WO2005045852A1 (en) * | 2003-10-28 | 2005-05-19 | 3M Innovative Properties Company | Cable filling materials |
| DE102005013930A1 (en) * | 2005-03-26 | 2006-09-28 | Nordenia Deutschland Gronau Gmbh | Use as adhesive tape, cling film or surface-protective film, of chlorine-free uncoated film with adhesive outer layers containing styrene block copolymer, polypropylene copolymer and amorphous polyolefin |
| CN101887774A (en) * | 2010-06-29 | 2010-11-17 | 河南省电力公司济源供电公司 | Cable filler strip and preparation method thereof |
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| CN104559021A (en) * | 2014-12-31 | 2015-04-29 | 东莞市技塑塑胶科技有限公司 | Anti-electromagnetic-interference thermoplastic elastomer wire material and preparation method thereof |
| CN104715830A (en) * | 2015-03-11 | 2015-06-17 | 上海军信船舶科技有限公司 | Water sealing hot melt adhesive for cable and application thereof |
| CN105679438A (en) * | 2014-08-30 | 2016-06-15 | 吴俊� | Cable with improved structure and manufacturing method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005045852A1 (en) * | 2003-10-28 | 2005-05-19 | 3M Innovative Properties Company | Cable filling materials |
| DE102005013930A1 (en) * | 2005-03-26 | 2006-09-28 | Nordenia Deutschland Gronau Gmbh | Use as adhesive tape, cling film or surface-protective film, of chlorine-free uncoated film with adhesive outer layers containing styrene block copolymer, polypropylene copolymer and amorphous polyolefin |
| CN101887774A (en) * | 2010-06-29 | 2010-11-17 | 河南省电力公司济源供电公司 | Cable filler strip and preparation method thereof |
| CN103996451A (en) * | 2014-06-05 | 2014-08-20 | 华迅工业(苏州)有限公司 | CAT8 symmetrical data cable for Ethernet |
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|---|---|
| CN109504019A (en) | 2019-03-22 |
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