CN103304947A - Anti-oxidation PTC (Positive Temperature Coefficient) macromolecular heating material and preparation method thereof - Google Patents
Anti-oxidation PTC (Positive Temperature Coefficient) macromolecular heating material and preparation method thereof Download PDFInfo
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- CN103304947A CN103304947A CN2013101973973A CN201310197397A CN103304947A CN 103304947 A CN103304947 A CN 103304947A CN 2013101973973 A CN2013101973973 A CN 2013101973973A CN 201310197397 A CN201310197397 A CN 201310197397A CN 103304947 A CN103304947 A CN 103304947A
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Abstract
The invention discloses an anti-oxidation PTC (Positive Temperature Coefficient) macromolecular heating material. The anti-oxidation PTC macromolecular heating material is prepared from the following raw materials in parts by weight: 8-10 parts of polymethyl methacrylate, 80-85 parts of low-density polyethylene, 5-8 parts of titanium carbide, 12-16 parts of conductive carbon black, 8-10 parts of aluminum nitride, 20-25 parts of maifanite powder, 4-6 parts of vinyl trimethoxysilane, 4-6 parts of titanium diboride, 12-14 parts of calcium carbonate, 4-6 parts of trimethylolpropane triacrylate, 4-6 parts of 3-aminopropyl trimethoxysilane, 1-2 parts of antioxidant 1010, 3-4 parts of calcium stearate, 5-7 parts of acetyl triethyl citrate and 1-2 parts of imidazoline. The anti-oxidation PTC macromolecular heating material and the preparation method thereof have the advantages that the PTC strength and PTC stability of the material are improved greatly, the resistance is stable, the temperature is uniform, the PTC characteristic is stable, the material has oxidation resistance, and the service life of the material is prolonged.
Description
Technical field
The invention belongs to polymeric material field, be specifically related to a kind of high molecular based PTC exothermic material and preparation method thereof.
Background technology
The PTC polymer heating material as overheated, overcurrent protection be widely used in communicating by letter from the temperature control heating material, in the various fields such as computer, automobile, Industry Control, household electrical appliance.Problems such as present organic PTC material is conductive filler material with graphite and carbon black mainly, mainly has the room temperature resistance wider distribution, and PTC intensity is little, stability is lower.
Summary of the invention
The purpose of this invention is to provide a kind of anti-oxidant PTC polymer heating material, possess low room temperature resistivity, long-term through-flow stable performance, high PTC intensity and high PTC stability, good in oxidation resistance.
Technical solution of the present invention is as follows:
Anti-oxidant PTC polymer heating material is characterized in that: the raw material by following weight part is made: polymethylmethacrylate 8-10, Low Density Polyethylene 80-85, titanium carbide 5-8, conductive carbon black 12-16, aluminium nitride 8-10, medical stone powder 20-25, vinyltrimethoxy silane 4-6, TiB2 4-6, calcium carbonate 12-14, Viscoat 295 4-6,3-aminopropyl trimethoxysilane 4-6, antioxidant 1010 1-2,
Calcium stearate 3-4,Acetyl triethyl citrate 5-7, tetrahydroglyoxaline 1-2.
Described anti-oxidant PTC polymer heating material, it is characterized in that: may further comprise the steps: titanium carbide is added the water stirring make suspension, add vinyltrimethoxy silane again, after high speed dispersion 10-15 minute, add conductive carbon black, medical stone powder, Paris white again, be heated to 50-60 ℃, adding acetyl triethyl citrate, tetrahydroglyoxaline stir, be ground to slurry, spraying drying obtains powder; Low Density Polyethylene, TiB2, Viscoat 295 were descended mixing 20-30 minute at 90-110 ℃, obtain compound; Polymethylmethacrylate is heated to 90-155 ℃, adds gained powder and compound and other remaining excess material, mixed 10-15 minute, extruding pelletization obtains.
PTC polymer heating material of the present invention is pressed into sheet material, again at sheet surface compacting lead, namely obtains PTC heating sheet.
The present invention adopts conductive carbon black
AddMedical stone powder, Paris white, vinyltrimethoxy silane grind, and increase the molecular network lattice structure between it, have to strengthen heat-resisting, anti-stream, the withstand voltage and effect that improves resistance change stability; Low Density Polyethylene of the present invention, TiB2, Viscoat 295 are carried out a batch mixing, having increased each raw material forms dispersed, through behind the rerolling, increased the compatibility between each material composition, conductive network structure more firm, improved PTC intensity of the present invention and high PTC stability greatly, resistance stabilization, temperature is even, ptc characteristics is stable, increase work-ing life of material.
Embodiment
Anti-oxidant PTC polymer heating material, made by the raw material of following weight part (kilogram): polymethylmethacrylate 8, Low Density Polyethylene 85, titanium carbide 8, conductive carbon black 16, aluminium nitride 8, medical stone powder 25, vinyltrimethoxy silane 6, TiB2 6, calcium carbonate 14, Viscoat 295 6,3-aminopropyl trimethoxysilane 6, antioxidant 1010 2,
Calcium stearate 4,Acetyl triethyl citrate 7, tetrahydroglyoxaline 1.
Described anti-oxidant PTC polymer heating material, may further comprise the steps: titanium carbide is added the water stirring make suspension, add vinyltrimethoxy silane again, after high speed dispersion 10-15 minute, add conductive carbon black, medical stone powder, Paris white again, be heated to 50-60 ℃, adding acetyl triethyl citrate, tetrahydroglyoxaline stir, be ground to slurry, spraying drying obtains powder; Low Density Polyethylene, TiB2, Viscoat 295 were descended mixing 20-30 minute at 90-110 ℃, obtain compound; Polymethylmethacrylate is heated to 90-155 ℃, adds gained powder and compound and other remaining excess material, mixed 10-15 minute, extruding pelletization obtains.
PTC polymer heating material of the present invention is pressed into sheet material, prepares the bar shaped sample of long 100mm, wide 6.5mm, thick 2mm, again at sheet surface compacting lead, namely obtain PTC heating sheet.
Detect performance:
Room temperature (25 ℃) zero power resistance is 19m Ω, PTC intensity reaches more than 8.6, its room temperature resistance is still below 30m Ω after thermal cycling between-20 ℃ and 140 ℃ 200 times with it, and the changes in resistance situation is stable in thermal cycling, has long-term through-flow through-current capability greater than 100A.Generated heat 36 hours continuously at 200 times, do not have and burn phenomenon.The PTC polymer heating material life-span: energising in 15 minutes was once cut off the power supply once circulation in 30 minutes, break-make 5000 times, power variation rate 94%, rate of temperature change 98% in 15 minutes.
Claims (2)
1. anti-oxidant PTC polymer heating material, it is characterized in that: the raw material by following weight part is made: polymethylmethacrylate 8-10, Low Density Polyethylene 80-85, titanium carbide 5-8, conductive carbon black 12-16, aluminium nitride 8-10, medical stone powder 20-25, vinyltrimethoxy silane 4-6, TiB2 4-6, calcium carbonate 12-14, Viscoat 295 4-6,3-aminopropyl trimethoxysilane 4-6, antioxidant 1010 1-2,
Calcium stearate 3-4,Acetyl triethyl citrate 5-7, tetrahydroglyoxaline 1-2.
2. the preparation method of anti-oxidant PTC polymer heating material according to claim 1, it is characterized in that: may further comprise the steps: titanium carbide is added the water stirring make suspension, add vinyltrimethoxy silane again, after high speed dispersion 10-15 minute, add conductive carbon black, medical stone powder, Paris white again, be heated to 50-60 ℃, adding acetyl triethyl citrate, tetrahydroglyoxaline stir, be ground to slurry, spraying drying obtains powder; Low Density Polyethylene, TiB2, Viscoat 295 were descended mixing 20-30 minute at 90-110 ℃, obtain compound; Polymethylmethacrylate is heated to 90-155 ℃, adds gained powder and compound and other remaining excess material, mixed 10-15 minute, extruding pelletization obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310197397.3A CN103304947B (en) | 2013-05-24 | 2013-05-24 | Anti-oxidant PTC polymer heating material and preparation method thereof |
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| CN201310197397.3A CN103304947B (en) | 2013-05-24 | 2013-05-24 | Anti-oxidant PTC polymer heating material and preparation method thereof |
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| CN103304947A true CN103304947A (en) | 2013-09-18 |
| CN103304947B CN103304947B (en) | 2016-03-02 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106751088A (en) * | 2016-12-20 | 2017-05-31 | 宁波爱克创威新材料科技有限公司 | A kind of temp auto-controlled PTC electric heating materials and preparation method thereof |
| CN108034178A (en) * | 2017-12-28 | 2018-05-15 | 林雀萍 | The preparation method of environmentally friendly composite materials |
| CN108178895A (en) * | 2017-12-28 | 2018-06-19 | 林雀萍 | The preparation method of flame-resistant resin environment-friendly composite material |
| CN108178896A (en) * | 2017-12-28 | 2018-06-19 | 林雀萍 | The preparation method of cloth waste and the composite material of resin compounded |
| CN108192253A (en) * | 2017-12-28 | 2018-06-22 | 林雀萍 | The preparation method of the composite material of high frictional behaviour |
| CN110078999A (en) * | 2019-05-06 | 2019-08-02 | 宁波昕科工贸有限公司 | A kind of environmental protection macromolecule exothermic material and preparation method thereof |
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| US20060231807A1 (en) * | 2002-05-29 | 2006-10-19 | Tdk Corporation | PTC composition, method of making the same, and thermistor body obtained therefrom |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106751088A (en) * | 2016-12-20 | 2017-05-31 | 宁波爱克创威新材料科技有限公司 | A kind of temp auto-controlled PTC electric heating materials and preparation method thereof |
| CN108034178A (en) * | 2017-12-28 | 2018-05-15 | 林雀萍 | The preparation method of environmentally friendly composite materials |
| CN108178895A (en) * | 2017-12-28 | 2018-06-19 | 林雀萍 | The preparation method of flame-resistant resin environment-friendly composite material |
| CN108178896A (en) * | 2017-12-28 | 2018-06-19 | 林雀萍 | The preparation method of cloth waste and the composite material of resin compounded |
| CN108192253A (en) * | 2017-12-28 | 2018-06-22 | 林雀萍 | The preparation method of the composite material of high frictional behaviour |
| CN110078999A (en) * | 2019-05-06 | 2019-08-02 | 宁波昕科工贸有限公司 | A kind of environmental protection macromolecule exothermic material and preparation method thereof |
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| CN103304947B (en) | 2016-03-02 |
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Address after: 239300 Anhui city of Chuzhou province Tianchang Tianye Road No. 288 Patentee after: Anbang Electric Co., Ltd. Address before: 239300 Anhui city of Chuzhou province Tianchang Tianye Road No. 288 Patentee before: Anbang Electrical Group Co., Ltd. |