CN104582031A - Low-resistance type automatic-temperature-limited polymer heat tracing cable - Google Patents
Low-resistance type automatic-temperature-limited polymer heat tracing cable Download PDFInfo
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- CN104582031A CN104582031A CN201310483334.4A CN201310483334A CN104582031A CN 104582031 A CN104582031 A CN 104582031A CN 201310483334 A CN201310483334 A CN 201310483334A CN 104582031 A CN104582031 A CN 104582031A
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Abstract
The invention discloses a low-resistance type automatic-temperature-limited polymer heat tracing cable. A PTC (positive temperature coefficient) material adopts a polymer based PTC composite material, wherein high density polyethylene, ethylene- methacrylate ionomer and polyester acrylate oligomer at the weight ratio of (5:2:1)-(4:2:1) jointly form a polymer material matrix; the weight percentages of carbon black, carbon fiber, zinc oxide, tetra-pentaerythritol ester and dicumyl peroxide added to the polymer material matrix is 14%-17%, 6%-12%, 0.3%-0.6%, 0.06%-0.08% and 0.005%-0.01%, and the weight ratio of 2-methyl-1-(4-(methylthio)phenyl)-2-morpholine-1-propanon and carbon black is 0.05-0.2. According to the low-resistance type automatic-temperature-limited polymer heat tracing cable, performance of the heat tracing cable is optimized, the structure is simple, the low-temperature resistivity is low, and the PTC strength is high.
Description
Technical field
The present invention relates to accompanying-heat cable technical field, particularly relate to a kind of low resistance type high polymer self-limiting temperature accompanying-heat cable.
Background technology
Accompanying-heat cable is widely used in many fields, need to prevent the liquid substance in pipeline or tank from solidifying/slow the place of flowing velocity as mainly utilized in industrial aspect in oil, chemical industry, cogeneration power plant etc., in communal facility, be mainly used in companion's heat of fire protection pipeline, can be used in civilian heating of house and winter yard piping antifreeze in.The core of accompanying-heat cable is its structure and makes the PTC(PositiveTemperature Coefficient of its electrothermal part) material.A kind of thermo-sensitive material that the resistance value of material that refers to ptc material rises with the rising of temperature, namely substantially remain unchanged when the resistance of material or resistivity are in a certain specific temperature range or only have the change of small quantity, and time near certain specific knee pointy temperature that temperature reaches material, the resistivity of material can be undergone mutation in the narrow temperature range of several years or tens degree, and resistivity increases 10 rapidly
3-10
9the order of magnitude.
Ptc material is mainly divided into ceramic base ptc material and high molecular based PTC material two type.Wherein, high molecular based PTC material demonstrates huge using value owing to having the advantages such as easy processing, manufacturing cost is lower, conductive extensions is large.But in prior art, also there is the defects such as low-temperature resistivity is higher, PTC intensity is lower in high molecular based PTC material and macromolecule accompanying-heat cable.
Summary of the invention
In order to solve the technical problem existed in background technology, the present invention proposes a kind of low resistance type high polymer self-limiting temperature accompanying-heat cable, achieving the performance optimization to accompanying-heat cable, its structure is simple, and low-temperature resistivity is low, and PTC intensity is high.
A kind of low resistance type high polymer self-limiting temperature accompanying-heat cable that the present invention proposes, comprise PTC core ribbon, PTC core ribbon is made up of two heating-wires be arranged in parallel and the ptc layer be coated on outside it, at PTC core ribbon outer coated insulation layer, metal screen layer and wear-resistance protective sleeve layer successively, described ptc material adopts high molecular based PTC composite material, described high molecular based PTC composite material is by high density polyethylene (HDPE), carbon black, ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer, carbon fiber, tetrapentaerythritol fat, zinc oxide, cumyl peroxide, 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone is made, wherein, high density polyethylene (HDPE), ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer forms macromolecular material matrix jointly, and the percentage by weight of three is 5:2:1-4:2:1, the addition of carbon black in macromolecular material matrix is 14-17%wt, the addition of carbon fiber in macromolecular material matrix is 6-12%wt, the addition of zinc oxide in macromolecular material matrix is 0.3-0.6%wt, the addition of tetrapentaerythritol fat in macromolecular material matrix is 0.06-0.08%wt, the addition of cumyl peroxide in macromolecular material matrix is 0.005-0.01%wt, the weight ratio of 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone and carbon black is 0.05-0.2.
Preferably, the percentage by weight of high density polyethylene (HDPE), ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer is 9:4:2.
Preferably, the addition of carbon black in macromolecular material matrix is 17%wt.
Preferably, the addition of carbon fiber in macromolecular material matrix is 12%wt.
Preferably, the addition of zinc oxide in macromolecular material matrix is 0.5%wt.
Preferably, the addition of tetrapentaerythritol fat in macromolecular material matrix is 0.06%wt, cumyl peroxide 0.01%wt.
Preferably, the weight ratio of 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone and carbon black is 0.1.
Prepare a method for high molecular based PTC composite material in low resistance type high polymer self-limiting temperature accompanying-heat cable, comprise the following steps:
S1 takes high density polyethylene (HDPE), ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer by weight percentage; With reference to the amount of taking of above-mentioned three, take carbon black, carbon fiber, zinc oxide by addition, and in mixer, carry out mixing 16-20 minute by above-mentioned six;
S2 is with reference to the amount of taking of step S1 medium high density polyethylene, ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer, tetrapentaerythritol fat, cumyl peroxide is taken by addition, with reference to the amount of taking of carbon black in step S1, take 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone by weight percentage;
The each component taken in the mixture mixed in step S1 and step S2 is put into mixing roll and is carried out mixing by S3, and melting temperature is 160-168 DEG C, and mixing time is 16-20min, mixing rear cooling, pelletizing.
In the present invention, interpolation carbon black and carbon fiber is adopted to form two conductive filler, carbon fiber forms conductive network in the base, remote conductive ability is provided, carbon black particle provides short range conductive capability and can play bridge joint effect for the overlap joint of adjacent carbons fiber, and the interaction achieved between two conductive filler coordinates, simultaneously, substantially increase the interpolation threshold value of conductive filler in matrix, greatly promote accompanying-heat cable conductive capability at low ambient temperatures; When temperature raises gradually, distance between carbon black particle increases, when short range conduction is damaged, because the draw ratio of carbon fiber is larger, the remote conductive ability of carbon fiber is still maintained, thus compensates being increased the conductivity decline caused by carbon black particle distance, make before PTC transition temperature, the conductance change of accompanying-heat cable is mild, promotes the stability of accompanying-heat cable; And when reaching PTC transition temperature, due to the volumetric expansion of macromolecule matrix, the remote conductive that carbon fiber and carbon black particle produce and short range are conducted electricity and are all damaged, thus produce huge PTC effect, and the PTC transition region that can narrow, improve the PTC intensity of accompanying-heat cable; Cumyl peroxide is as the interpolation as carbon black graft thing of the interpolation of macromolecule matrix crosslink material agent and 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone, improve gelling and the dispersiveness of carbon black particle in macromolecule matrix material of macromolecule matrix material, thus promote the PTC intensity of accompanying-heat cable further.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of low resistance type high polymer self-limiting temperature accompanying-heat cable that the present invention proposes;
Fig. 2 is a kind of schematic flow sheet preparing the method for high molecular based PTC composite material in low resistance type high polymer self-limiting temperature accompanying-heat cable that the present invention proposes.
Embodiment
As shown in Figure 1, Fig. 1 is the structural representation of a kind of low resistance type high polymer self-limiting temperature accompanying-heat cable that the present invention proposes.
With reference to Fig. 1, a kind of low resistance type high polymer self-limiting temperature accompanying-heat cable that the present invention proposes, comprise the PTC core ribbon of flat belt-like, PTC core ribbon is made up of two heating-wires be arranged in parallel 1 and the ptc layer 2 be coated on outside it, at PTC core ribbon outer coated insulation layer 3, metal screen layer 4 and wear-resistance protective sleeve layer 5 successively; Described ptc material adopts high molecular based PTC composite material.
In one embodiment, high molecular based PTC composite material is by high density polyethylene (HDPE), carbon black, ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer, carbon fiber, tetrapentaerythritol fat, zinc oxide, cumyl peroxide, 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone is made, wherein, high density polyethylene (HDPE), ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer forms macromolecular material matrix jointly, and the percentage by weight of three is 9:4:2, the addition of carbon black in macromolecular material matrix is 17%wt, the addition of carbon fiber in macromolecular material matrix is 12%wt, the addition of zinc oxide in macromolecular material matrix is 0.5%wt, the addition of tetrapentaerythritol fat in macromolecular material matrix is 0.06%wt, the addition of cumyl peroxide in macromolecular material matrix is 0.01%wt, the weight ratio of 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone and carbon black is 0.1.
In another kind of embodiment, high molecular based PTC composite material is by high density polyethylene (HDPE), carbon black, ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer, carbon fiber, tetrapentaerythritol fat, zinc oxide, cumyl peroxide, 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone is made, wherein, high density polyethylene (HDPE), ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer forms macromolecular material matrix jointly, and the percentage by weight of three is 5:2:1, the addition of carbon black in macromolecular material matrix is 14%wt, the addition of carbon fiber in macromolecular material matrix is 10%wt, the addition of zinc oxide in macromolecular material matrix is 0.3%wt, the addition of tetrapentaerythritol fat in macromolecular material matrix is 0.06%wt, the addition of cumyl peroxide in macromolecular material matrix is 0.005%wt, the weight ratio of 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone and carbon black is 0.05.
In another embodiment, high molecular based PTC composite material is by high density polyethylene (HDPE), carbon black, ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer, carbon fiber, tetrapentaerythritol fat, zinc oxide, cumyl peroxide, 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone is made, wherein, high density polyethylene (HDPE), ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer forms macromolecular material matrix jointly, and the percentage by weight of three is 4:2:1, the addition of carbon black in macromolecular material matrix is 16%wt, the addition of carbon fiber in macromolecular material matrix is 6%wt, the addition of zinc oxide in macromolecular material matrix is 0.6%wt, the addition of tetrapentaerythritol fat in macromolecular material matrix is 0.07%wt, the addition of cumyl peroxide in macromolecular material matrix is 0.08%wt, the weight ratio of 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone and carbon black is 0.2.
In the present invention, interpolation carbon black and carbon fiber is adopted to form two conductive filler, carbon fiber forms conductive network in the base, remote conductive ability is provided, carbon black particle provides short range conductive capability and can play bridge joint effect for the overlap joint of adjacent carbons fiber, and the interaction achieved between two conductive filler coordinates, simultaneously, substantially increase the interpolation threshold value of conductive filler in matrix, greatly promote accompanying-heat cable conductive capability at low ambient temperatures; When temperature raises gradually, distance between carbon black particle increases, when short range conduction is damaged, because the draw ratio of carbon fiber is larger, the remote conductive ability of carbon fiber is still maintained, thus compensates being increased the conductivity decline caused by carbon black particle distance, make before PTC transition temperature, the conductance change of accompanying-heat cable is mild, promotes the stability of accompanying-heat cable; And when reaching PTC transition temperature, due to the volumetric expansion of macromolecule matrix, the remote conductive that carbon fiber and carbon black particle produce and short range are conducted electricity and are all damaged, thus produce huge PTC effect, and the PTC transition region that can narrow, improve the PTC intensity of accompanying-heat cable; Cumyl peroxide is as the interpolation as carbon black graft thing of the interpolation of macromolecule matrix crosslink material agent and 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone, improve gelling and the dispersiveness of carbon black particle in macromolecule matrix material of macromolecule matrix material, thus promote the PTC intensity of accompanying-heat cable further.
As shown in Figure 2, Fig. 2 is a kind of schematic flow sheet preparing the method for high molecular based PTC composite material in low resistance type high polymer self-limiting temperature accompanying-heat cable that the present invention proposes.
With reference to Fig. 2, the invention allows for a kind of method preparing high molecular based PTC composite material in low resistance type high polymer self-limiting temperature accompanying-heat cable, comprise the following steps:
S1, take high density polyethylene (HDPE), ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer by weight percentage; With reference to the amount of taking of above-mentioned three, take carbon black, carbon fiber, zinc oxide by addition, and in mixer, carry out mixing 20 minutes by above-mentioned six;
The amount of taking of S2, reference step S1 medium high density polyethylene, ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer, tetrapentaerythritol fat, cumyl peroxide is taken by addition, with reference to the amount of taking of carbon black in step S1, take 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone by weight percentage;
S3, each component taken is put into mixing roll carry out mixing in step S1 in the mixture mixed and step S2, melting temperature is 160 DEG C, and mixing time is 20min, mixing rear cooling, pelletizing.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (8)
1. a low resistance type high polymer self-limiting temperature accompanying-heat cable, comprises PTC core ribbon, and PTC core ribbon is made up of two heating-wires be arranged in parallel and the ptc layer be coated on outside it, at PTC core ribbon outer coated insulation layer, metal screen layer and wear-resistance protective sleeve layer successively, it is characterized in that, described ptc material adopts high molecular based PTC composite material, described high molecular based PTC composite material is by high density polyethylene (HDPE), carbon black, ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer, carbon fiber, tetrapentaerythritol fat, zinc oxide, cumyl peroxide, 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone is made, wherein, high density polyethylene (HDPE), ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer forms macromolecular material matrix jointly, and the percentage by weight of three is 5:2:1-4:2:1, the addition of carbon black in macromolecular material matrix is 14-17%wt, the addition of carbon fiber in macromolecular material matrix is 6-12%wt, the addition of zinc oxide in macromolecular material matrix is 0.3-0.6%wt, the addition of tetrapentaerythritol fat in macromolecular material matrix is 0.06-0.08%wt, the addition of cumyl peroxide in macromolecular material matrix is 0.005-0.01%wt, the weight ratio of 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone and carbon black is 0.05-0.2.
2. low resistance type high polymer self-limiting temperature accompanying-heat cable according to claim 1, is characterized in that, the percentage by weight of high density polyethylene (HDPE), ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer is 9:4:2.
3. low resistance type high polymer self-limiting temperature accompanying-heat cable according to claim 1, is characterized in that, the addition of carbon black in macromolecular material matrix is 17%wt.
4. low resistance type high polymer self-limiting temperature accompanying-heat cable according to claim 1, is characterized in that, the addition of carbon fiber in macromolecular material matrix is 12%wt.
5. low resistance type high polymer self-limiting temperature accompanying-heat cable according to claim 1, is characterized in that, the addition of zinc oxide in macromolecular material matrix is 0.5%wt.
6. low resistance type high polymer self-limiting temperature accompanying-heat cable according to claim 1, is characterized in that, the addition of tetrapentaerythritol fat in macromolecular material matrix is 0.06%wt, cumyl peroxide 0.01%wt.
7. low resistance type high polymer self-limiting temperature accompanying-heat cable according to claim 1, is characterized in that, the weight ratio of 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone and carbon black is 0.1.
8. prepare a method for high molecular based PTC composite material in the low resistance type high polymer self-limiting temperature accompanying-heat cable as described in any one of claim 1-7, it is characterized in that, comprise the following steps:
S1, take high density polyethylene (HDPE), ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer by weight percentage; With reference to the amount of taking of above-mentioned three, take carbon black, carbon fiber, zinc oxide by addition, and in mixer, carry out mixing 16-20 minute by above-mentioned six;
The amount of taking of S2, reference step S1 medium high density polyethylene, ethylene-methyl methacrylate fat ionomer, polyester acrylic oligomer, tetrapentaerythritol fat, cumyl peroxide is taken by addition, with reference to the amount of taking of carbon black in step S1, take 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone by weight percentage;
S3, each component taken is put into mixing roll carry out mixing in step S1 in the mixture mixed and step S2, melting temperature is 160-168 DEG C, and mixing time is 16-20min, mixing rear cooling, pelletizing.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105924732A (en) * | 2016-06-07 | 2016-09-07 | 安邦电气股份有限公司 | Safe self-controlled temperature type heat tracing cable |
| CN105968498A (en) * | 2016-06-07 | 2016-09-28 | 安邦电气股份有限公司 | Polymer-based conductive heat tracing cable with high heat stability |
| CN105985572A (en) * | 2016-07-05 | 2016-10-05 | 安徽吉安特种线缆制造有限公司 | High-electric-stability self-regulation cable material |
| CN106046480A (en) * | 2016-06-13 | 2016-10-26 | 安徽和信科技发展有限责任公司 | Waterproof moisture-proof self-limiting temperature heat tracing cable |
| CN106147021A (en) * | 2016-07-05 | 2016-11-23 | 安徽吉安特种线缆制造有限公司 | The self limiting temperature accompanying-heat cable material that a kind of liter of high-temperature is fast |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001060908A1 (en) * | 2000-02-16 | 2001-08-23 | Samsung General Chemicals Co., Ltd. | Incombustible polyolefin resin composition |
| CN102573154A (en) * | 2012-02-02 | 2012-07-11 | 西安盖沃热能科技有限公司 | Self temperature limiting heat tracing strip of PTC (positive temperature coefficient) high polymer conductive composite material and preparation method thereof |
| CN103304872A (en) * | 2013-05-24 | 2013-09-18 | 安邦电气集团有限公司 | High-density polyvinyl PTC high molecular exothermic material and preparation method thereof |
-
2013
- 2013-10-15 CN CN201310483334.4A patent/CN104582031A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001060908A1 (en) * | 2000-02-16 | 2001-08-23 | Samsung General Chemicals Co., Ltd. | Incombustible polyolefin resin composition |
| CN102573154A (en) * | 2012-02-02 | 2012-07-11 | 西安盖沃热能科技有限公司 | Self temperature limiting heat tracing strip of PTC (positive temperature coefficient) high polymer conductive composite material and preparation method thereof |
| CN103304872A (en) * | 2013-05-24 | 2013-09-18 | 安邦电气集团有限公司 | High-density polyvinyl PTC high molecular exothermic material and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105924732A (en) * | 2016-06-07 | 2016-09-07 | 安邦电气股份有限公司 | Safe self-controlled temperature type heat tracing cable |
| CN105968498A (en) * | 2016-06-07 | 2016-09-28 | 安邦电气股份有限公司 | Polymer-based conductive heat tracing cable with high heat stability |
| CN106046480A (en) * | 2016-06-13 | 2016-10-26 | 安徽和信科技发展有限责任公司 | Waterproof moisture-proof self-limiting temperature heat tracing cable |
| CN105985572A (en) * | 2016-07-05 | 2016-10-05 | 安徽吉安特种线缆制造有限公司 | High-electric-stability self-regulation cable material |
| CN106147021A (en) * | 2016-07-05 | 2016-11-23 | 安徽吉安特种线缆制造有限公司 | The self limiting temperature accompanying-heat cable material that a kind of liter of high-temperature is fast |
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Application publication date: 20150429 |