CN103304872A - High-density polyvinyl PTC high molecular exothermic material and preparation method thereof - Google Patents
High-density polyvinyl PTC high molecular exothermic material and preparation method thereof Download PDFInfo
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- CN103304872A CN103304872A CN 201310197483 CN201310197483A CN103304872A CN 103304872 A CN103304872 A CN 103304872A CN 201310197483 CN201310197483 CN 201310197483 CN 201310197483 A CN201310197483 A CN 201310197483A CN 103304872 A CN103304872 A CN 103304872A
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Abstract
The invention discloses a high-density polyvinyl PTC (Positive Temperature Coefficient) high molecular exothermic material. The high-density polyvinyl PTC high molecular exothermic material is characterized by being prepared from the following raw materials in parts by weight: 60-70 parts of high-density polyethylene, 10-15 parts of maleic anhydride grafted polyethylene, 4-5 parts of polymethyl methacrylate, 10-15 parts of carbon fibers, 20-30 parts of nickel powder, 5-8 parts of zinc oxide, 3-5 parts of aluminium nitride powder, 6-9 parts of emery powder, 3-8 parts of silicon dioxide, 25-30 parts of attapulgite, 1-2 parts of dilauryl thiodipropionate, 4-6 parts of vinyltriethoxysilane, 2-4 parts of zinc stearate, 1-2 parts of polyethylene wax, 2-3 parts of phthalate and 1-2 parts of dimethicone. The high-density polyvinyl PTC high molecular exothermic material is characterized in that the carbon fibers and the nickel powder are taken as conductive composite materials, the nickel powder and the attapulgite powder are added with the aluminium nitride powder, the vinyltriethoxysilane and the zinc stearate and ground so that the molecular grid structure therebetween can be enhanced, and the effects of enhancing heat resistance, current resistance and voltage resistance and improving resistance change stability are achieved.
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 is as in overheated, the various fields such as overcurrent protection is widely used in communicating by letter with the temp auto-controlled heating material, computer, automobile, Industry Control, household electrical appliance.Mainly take graphite and carbon black as conductive filler material, mainly there is the room temperature resistance wider distribution in present organic PTC material, the problem such as PTC intensity is little, stability is lower.
Summary of the invention
The purpose of this invention is to provide a kind of PTC polymer heating material that possesses low room temperature resistivity, long-term through-flow stable performance, high PTC intensity and high PTC stability and preparation method thereof.
Technical solution of the present invention is as follows:
A kind of high-density polyethylene thiazolinyl PTC polymer heating material, it is characterized in that: the raw material by following weight part is made: the polyethylene 10-15 of high density polyethylene(HDPE) 60-70, maleic anhydride graft, polymethylmethacrylate 4-5, carbon fiber 10-15, nickel powder 20-30, zinc oxide 5-8, aluminum nitride powder 3-5, lapis amiridis 6-9, silicon-dioxide 3-8,
Attapulgite 25-30,Tyox B 1-2, vinyltriethoxysilane 4-6, Zinic stearas 2-4, polyethylene wax 1-2, phthalic ester 2-3, dimethyl silicone oil 1-2.
The preparation method of described high-density polyethylene thiazolinyl PTC polymer heating material is characterized in that: may further comprise the steps:
(1), will
AttapulgiteAdd the water stirring and make suspension, add nickel powder, aluminum nitride powder, lapis amiridis again, after high speed dispersion 15-30 minute, be heated to 70-75 ℃, add vinyltriethoxysilane, Zinic stearas again, stir and ground 2-3 hour, to slurry, spraying drying obtains powder;
(2), with polymethylmethacrylate, silicon-dioxide, phthalic ester, dimethyl silicone oil 180-245 ℃ lower mixing 10-15 minute, obtain compound;
(3), the polyethylene with high density polyethylene(HDPE), maleic anhydride graft, gained powder mix with compound and other surplus stock, is heated to 170-240 ℃, mixing 10-15 minute, extruding pelletization obtained.
Maleic anhydride grafting ratio is 5-8% in the polyethylene of maleic anhydride graft;
PTC polymer heating material of the present invention is pressed into sheet material, at sheet surface compacting wire, namely obtains the PTC fever tablet again.
The present invention adopts carbon fiber and nickel powder as conducing composite material, nickel powder with
Attapulgite powder addsAluminum nitride powder, vinyltriethoxysilane, Zinic stearas 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; Polymethylmethacrylate of the present invention, silicon-dioxide, phthalic ester, dimethyl silicone oil 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, greatly improved PTC intensity of the present invention and high PTC stability, resistance stabilization, temperature is even, ptc characteristics is stable, the work-ing life of increase material.
Embodiment
High-density polyethylene thiazolinyl PTC polymer heating material, made by the raw material of following weight part (kilogram): the polyethylene 15 of high density polyethylene(HDPE) 60, maleic anhydride graft, polymethylmethacrylate 4, carbon fiber 15, nickel powder 20, zinc oxide 8, aluminum nitride powder 5, lapis amiridis 9, silicon-dioxide 8,
Attapulgite 30,Tyox B 1, vinyltriethoxysilane 6, Zinic stearas 4, polyethylene wax 1, phthalic ester 3, dimethyl silicone oil 1.The preparation method may further comprise the steps:
(1), will
AttapulgiteAdd the water stirring and make suspension, add nickel powder, aluminum nitride powder, lapis amiridis again, high speed dispersion was heated to 70-75 ℃ after 30 minutes, added vinyltriethoxysilane, Zinic stearas again, stirred and ground 2 hours, and to slurry, spraying drying obtains powder;
(2), with polymethylmethacrylate, silicon-dioxide, phthalic ester, dimethyl silicone oil 180-245 ℃ lower mixing 15 minutes, obtain compound;
(3), the polyethylene with high density polyethylene(HDPE), maleic anhydride graft, gained powder mix with compound and other surplus stock, is heated to 190-240 ℃, mixing 10-15 minute, extruding pelletization obtained.
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, at sheet surface compacting wire, namely obtain the PTC fever tablet again.
Detect performance:
Room temperature (25 ℃) zero power resistance is 16m Ω, PTC intensity reaches more than 8.8, with its after thermal cycling between-20 ℃ and 140 ℃ 200 times its room temperature resistance still below 30m Ω, and the changing conditions of resistance is stable in thermal cycling, has long-term through-flow through-current capability greater than 100A.Generated heat 36 hours continuously at 200 times, without burning 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 95%, rate of temperature change 98% in 15 minutes.
Claims (2)
1. high-density polyethylene thiazolinyl PTC polymer heating material, it is characterized in that: the raw material by following weight part is made: the polyethylene 10-15 of high density polyethylene(HDPE) 60-70, maleic anhydride graft, polymethylmethacrylate 4-5, carbon fiber 10-15, nickel powder 20-30, zinc oxide 5-8, aluminum nitride powder 3-5, lapis amiridis 6-9, silicon-dioxide 3-8,
Attapulgite 25-30,Tyox B 1-2, vinyltriethoxysilane 4-6, Zinic stearas 2-4, polyethylene wax 1-2, phthalic ester 2-3, dimethyl silicone oil 1-2.
2. the preparation method of high-density polyethylene thiazolinyl PTC polymer heating material according to claim 1 is characterized in that: may further comprise the steps:
(1), will
AttapulgiteAdd the water stirring and make suspension, add nickel powder, aluminum nitride powder, lapis amiridis again, after high speed dispersion 15-30 minute, be heated to 70-75 ℃, add vinyltriethoxysilane, Zinic stearas again, stir and ground 2-3 hour, to slurry, spraying drying obtains powder;
(2), with polymethylmethacrylate, silicon-dioxide, phthalic ester, dimethyl silicone oil 180-245 ℃ lower mixing 10-15 minute, obtain compound;
(3), the polyethylene with high density polyethylene(HDPE), maleic anhydride graft, gained powder mix with compound and other surplus stock, is heated to 170-240 ℃, mixing 10-15 minute, extruding pelletization obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310197483 CN103304872A (en) | 2013-05-24 | 2013-05-24 | High-density polyvinyl PTC high molecular exothermic material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201310197483 CN103304872A (en) | 2013-05-24 | 2013-05-24 | High-density polyvinyl PTC high molecular exothermic material and preparation method thereof |
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| CN103304872A true CN103304872A (en) | 2013-09-18 |
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| CN 201310197483 Pending CN103304872A (en) | 2013-05-24 | 2013-05-24 | High-density polyvinyl PTC high molecular exothermic material and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104072845A (en) * | 2014-06-20 | 2014-10-01 | 裴秀琴 | Environmental-friendly polyethylene plastic |
| CN104582031A (en) * | 2013-10-15 | 2015-04-29 | 安邦电气集团有限公司 | Low-resistance type automatic-temperature-limited polymer heat tracing cable |
| CN104582028A (en) * | 2013-10-15 | 2015-04-29 | 安邦电气集团有限公司 | Composite polymer heat tracing cable capable of realizing automatic temperature limitation |
| CN109000075A (en) * | 2018-08-10 | 2018-12-14 | 芜湖市旭辉电工新材料有限责任公司 | A kind of antifreeze heating tape of uniform cloth heat of water supply line |
| CN112111093A (en) * | 2020-09-23 | 2020-12-22 | 芜湖科阳新材料股份有限公司 | PTC conductive composite material for heat tracing band and preparation method thereof |
-
2013
- 2013-05-24 CN CN 201310197483 patent/CN103304872A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582031A (en) * | 2013-10-15 | 2015-04-29 | 安邦电气集团有限公司 | Low-resistance type automatic-temperature-limited polymer heat tracing cable |
| CN104582028A (en) * | 2013-10-15 | 2015-04-29 | 安邦电气集团有限公司 | Composite polymer heat tracing cable capable of realizing automatic temperature limitation |
| CN104582028B (en) * | 2013-10-15 | 2016-06-22 | 安邦电气集团有限公司 | A kind of composite high-molecular self limiting temperature accompanying-heat cable |
| CN104072845A (en) * | 2014-06-20 | 2014-10-01 | 裴秀琴 | Environmental-friendly polyethylene plastic |
| CN109000075A (en) * | 2018-08-10 | 2018-12-14 | 芜湖市旭辉电工新材料有限责任公司 | A kind of antifreeze heating tape of uniform cloth heat of water supply line |
| CN112111093A (en) * | 2020-09-23 | 2020-12-22 | 芜湖科阳新材料股份有限公司 | PTC conductive composite material for heat tracing band and preparation method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130918 |
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| WD01 | Invention patent application deemed withdrawn after publication |