CN101717543A - Preparation of conductive plastic comprising asphalt base carbon fibers - Google Patents
Preparation of conductive plastic comprising asphalt base carbon fibers Download PDFInfo
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- CN101717543A CN101717543A CN200910311708A CN200910311708A CN101717543A CN 101717543 A CN101717543 A CN 101717543A CN 200910311708 A CN200910311708 A CN 200910311708A CN 200910311708 A CN200910311708 A CN 200910311708A CN 101717543 A CN101717543 A CN 101717543A
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- base carbon
- carbon fiber
- asphalt base
- conductive plastics
- conductive
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Abstract
The invention relates to a preparation of conductive plastic comprising asphalt base carbon fibers, which belongs to the field of methods for preparing the conductive plastics. Active carbon fibers are obtained by adopting a processing method of oxidizing first and then coupling, and then the active carbon fibers are filled and blended in a plastic substrate to prepare the conductive plastics comprising the asphalt base carbon fibers. The conductive plastics can overcome the defects of large filling quantity of conductive fillers, poor consistency of the fillers and the plastic substrate, high cost and the like of the conventional antistatic and electromagnetic shielding plastic composite material. The conductive plastic comprising the asphalt base carbon fibers, which is provided by the method, has excellent combination property, anti-static property and anti-electromagnetic interference property. The novel method for preparing the conductive plastic can utilize the common blending device to prepare a novel material, and has convenient processing and low manufacturing cost. For the prepared novel conductive plastic, the used asphalt base carbon fibers are short fibers, have excellent processing liquidity and the enhancement effect on the plastics, thereby being hopeful to be used as the antistatic material and the electromagnetic shielding material and applied to various high-tech fields.
Description
Technical field
The present invention relates to a kind of preparation of bituminous base carbon fibre conductive plastics, it belongs to the preparation method field of conductive plastics.
Background technology
Existing conductive plastics matrix material various high conductive carbon blacks, metal-powder or PAN-based carbon fiber (macrofiber) and the plastic blends of adopting prepare more.Shortcomings such as prepared material exists that loading level is big, processing difficulties, cost height, complicated process of preparation,, material over-all properties poor with manufacturability be lower sometimes.
Asphalt base carbon fiber is the carbon fiber novel material that China introduces the nineties, be a kind of high performance staple fibers strongthener, have many excellent properties such as high strength, high-modulus, high temperature resistant, wear-resisting, corrosion-resistant, antifatigue, creep resistance, conduction, heat conduction and far-infrared radiation.Asphalt base carbon fiber is compared with PAN-based carbon fiber, has better electroconductibility, and its monofilament conductive capability can be worked as with metallographic phase, its price advantage especially, and the price of asphalt base carbon fiber approximately is 1/10 of a PAN-based carbon fiber.So people begin one's study and adopt cheap asphalt base carbon fiber to substitute PAN-based carbon fiber manufacturing conductive plastics.
Pertinent literature and practical application prove, it is that the two consistency is poor that asphalt base carbon fiber is filled into key in the plastic substrate, must carry out surface treatment and become activity by inertia, thereby change the consistency of asphalt base carbon fiber and plastic substrate.Traditional method is to adopt strong oxidizers such as nitric acid, potassium permanganate, with the surface portion oxidation of asphalt base carbon fiber, forms hydroxyl, carboxyl etc., has certain activity.This method can not solve the surfactivity problem of asphalt base carbon fiber fully, can not be compatible with non-polar plastic well.So greatly limited the application of asphalt base carbon fiber in plastics composite.
Summary of the invention
The objective of the invention is to utilize the excellent specific property of asphalt base carbon fiber, the conductive filler material loading level that solves existing anti-electrostatic, electromagnetic shielding plastic is big, the consistency of filler and plastic substrate is poor, shortcomings such as cost height, provide a kind of high comprehensive performance, anti-electrostatic, anti-electromagnetic interference, cheap, conductive plastics easy to process.
Technical scheme of the present invention is as follows: a kind of bituminous base carbon fibre conductive plastics is made up of plastic substrate, active asphalt base carbon fiber, expanding material and oxidation inhibitor, and the mass percent of each component is: 60～80%: 10～30%: 0～10%: 0.1～0.2%.
The preparation of described bituminous base carbon fibre conductive plastics may further comprise the steps:
1. with asphalt base carbon fiber in concentration is 20%～60% strong oxidizer, in 70～110 ℃, oxide treatment 1～6 hour;
2. with the asphalt base carbon fiber after the oxidation with 1%～3% coupling agent, carry out coupling processing at 30～100 ℃;
3. will be through the asphalt base carbon fiber of peroxidation-coupling processing, under 50～90 ℃, ultrasonication 30～120 minutes makes active asphalt base carbon fiber;
4. active asphalt base carbon fiber and plastic substrate, expanding material, oxidation inhibitor are mixed,, obtain conductive plastics providing blend can simultaneously plastic substrate be heated to melting mixing in the equipment more than the fusing point again.
Described plastic substrate is new LDPE (film grade) or linear low density polyethylene, high density polyethylene(HDPE), polypropylene, acrylonitrile butadiene-styrene copolymer (ABS), or the mixture of the two wherein.
The model that described asphalt base carbon fiber is selected for use is: P-100, P-800,, P-1600, P-3200, C-10, C-12.
Described asphalt base carbon fiber is carried out the strong oxidizer that oxidation selects for use comprise nitric acid and potassium permanganate.
The coupling agent that described asphalt base carbon fiber surface modification is used comprises silane coupling agent, titanate coupling agent.
Described expanding material is selected maleic anhydride grafted polyethylene or glycidyl methacrylate graft polyethylene for use.
The guiding theory of technique scheme is: high molecular resistivity of material such as common plastics are 10
12-17Ω cm uses as insulating material, and most cases is resistivity 10
3Plastics about Ω cm are also referred to as conducting polymer composite as conductive plastics.The characteristic of conducting polymer composite mainly is: have good electrical conductivity and keep the characteristics of original macromolecular material, and have antistatic, anti-interference, shielding effect.Carbon fiber has shown the performance that it is superior as the filler of electro-conductive material.It is a kind of novel high strength, high modulus material, has good conductivity.When carbon fiber content 20～30% the time, the volume specific resistance of this matrix material is 10
1-4Ω cm has shield effectiveness.Regulate the carbon fiber specification dosage, can satisfy different requirements.In addition, carbon fiber surface plating plated metal is succeedd, and its electroconductibility can improve 50～100 times.But because relatively difficulty is promoted in costing an arm and a leg of carbon fiber.Asphalt base carbon fiber is compared with PAN-based carbon fiber, at first is price advantage, and the former only is the latter's 1/10, secondly is that staple fibre is particularly suitable for the manufacturing complex shapes goods.So people pay attention to the development and use of asphalt base carbon fiber in recent years.
The present invention utilizes the excellent specific property of asphalt base carbon fiber, utilize professional technique to solve the asphalt base carbon fiber surfactivity and overcome existing conductive plastics with the plastic substrate compatibility problem, anti-electrostatic, the conductive filler material loading level of electromagnetic shielding plastic is big, the consistency of filler and plastic substrate is poor, shortcomings such as cost height, prepare a kind of high comprehensive performance, has good electroconductibility, wear-resisting, corrosion-resistant, antifatigue, the conductive plastics of performances such as creep resistance, can be used as stealth material, the electromagnetic damping material, antistatic material, electromagnetic shielding material is expected to be applied in weapon, space flight, submarine, in the multiple high-tech area such as electromechanics.Utilized the electroconductibility of carbon fiber in the space industry.The carbon fiber compound conductive plastic will occupy certain seat in fields such as electronics, electric, space flight, aviations.
The invention has the beneficial effects as follows: asphalt base carbon fiber can improve the consistency of itself and plastic substrate after the oxidative coupling activation treatment, shows as breaking tenacity and increases; Active asphalt base carbon fiber filled plastics prepare conductive plastics and can reduce loading level, and the loading level of this conductive plastics medium pitch base carbon fibre is 10%～30%.
Embodiment
Embodiment one:
Be in 40% the nitric acid with 200 kilograms C-12 asphalt base carbon fiber working concentrations, at 110 ℃, oxide treatment 2 hours.Use 4 kilograms of titanate coupling agents again, handled 20 minutes down at 80 ℃.After the taking-up, under 80 ℃, ultrasonication 60 minutes makes activated carbon fiber.With whole materials such as activated carbon fiber and 755 kilograms of polypropylene, 45 kilograms of glycidyl methacrylate graft polyethylene expanding materials, 1.1 kilograms of oxidation inhibitor, mix standby.With the standby material that has mixed, progressively add in the twin screw extruder, carry out extruding pelletization, thereby make the conductive plastics of bituminous base carbon fibre.The volume specific resistance of prepared conductive plastics is 10
2～10
3Ohmcm, breaking tenacity improves 32%.
Embodiment two:
Be in 60% the nitric acid with 300 kilograms P-800 asphalt base carbon fiber working concentrations, 80 ℃, oxide treatment 4 hours.Use 4.8 kilograms of silane coupling agents again, handled 30 minutes down at 90 ℃.After the taking-up, under 70 ℃, ultrasonication 90 minutes makes activated carbon fiber.With whole materials such as activated carbon fiber and 210 kilograms of linear low density polyethylenes, 420 kilograms of new LDPE (film grade)s, 70 kilograms of maleic anhydride grafted polyethylene expanding materials, 1.3 kilograms of oxidation inhibitor, mix standby.The standby material that has mixed is progressively joined in the twin screw extruder, extruding pelletization, thus make the conductive plastics of bituminous base carbon fibre.
The volume specific resistance of prepared conductive plastics is 10
2～10
3Ohmcm, breaking tenacity increase and improve 22%.
Embodiment three:
Be in 5% the potassium permanganate with the P-3200 asphalt base carbon fiber working concentration of 120 kg, 85 ℃, oxide treatment 1 hour.Use 1.5 kilograms of titanate coupling agents again, handled 15 minutes down at 60 ℃.After the taking-up, under 90 ℃, ultrasonication 30 minutes makes activated carbon fiber.All mixing of materials are evenly standby with the activated carbon fiber that makes and 800 kilograms of ABS, 80 kilograms of glycidyl methacrylate graft polyethylene expanding materials, 2 kilograms of oxidation inhibitor etc.The standby base-material that has mixed is progressively joined in the twin screw extruder, extruding pelletization, thus make the conductive plastics of bituminous base carbon fibre.The volume specific resistance of prepared conductive plastics is 10
2～10
4Ohmcm, breaking tenacity improves 19%.
Claims (7)
1. bituminous base carbon fibre conductive plastics, it is characterized in that: described conductive plastics is made up of plastic substrate, active asphalt base carbon fiber, expanding material and oxidation inhibitor, and the mass percent of each component is: 60～80%: 10～30%: 0～10%: 0.1～0.2%.
2. according to the preparation of the described bituminous base carbon fibre of claim 1 conductive plastics, it is characterized in that: may further comprise the steps:
1. with asphalt base carbon fiber in concentration is 20%～60% strong oxidizer, in 70～110 ℃, oxide treatment 1～6 hour;
2. with the asphalt base carbon fiber after the oxidation with 1%～3% coupling agent, carry out coupling processing at 30～100 ℃;
3. will be through the asphalt base carbon fiber of oxidative coupling processing, under 50～90 ℃, ultrasonication 30～120 minutes makes active asphalt base carbon fiber;
4. active asphalt base carbon fiber and plastic substrate, expanding material, oxidation inhibitor are mixed,, obtain conductive plastics providing blend can simultaneously plastic substrate be heated to melting mixing in the equipment more than the fusing point again.
3. according to the preparation of the described bituminous base carbon fibre of claim 2 conductive plastics, it is characterized in that: described plastic substrate is new LDPE (film grade) or linear low density polyethylene, high density polyethylene(HDPE), polypropylene, acrylonitrile butadiene styrene terpolymers, or the mixture of the two wherein.
4. according to the preparation of the described bituminous base carbon fibre of claim 2 conductive plastics, it is characterized in that: the model that described asphalt base carbon fiber is selected for use is: P-100, P-800,, P-1600, P-3200, C-10, C-12.
5. according to the preparation of the described bituminous base carbon fibre of claim 2 conductive plastics, it is characterized in that: described asphalt base carbon fiber is carried out the strong oxidizer that oxidation selects for use comprise nitric acid and potassium permanganate.
6. according to the preparation of the described bituminous base carbon fibre of claim 2 conductive plastics, it is characterized in that: the coupling agent that described asphalt base carbon fiber surface modification is used comprises silane coupling agent, titanate coupling agent.
7. according to the preparation of the described bituminous base carbon fibre of claim 2 conductive plastics, it is characterized in that: described expanding material is selected maleic anhydride grafted polyethylene or glycidyl methacrylate graft polyethylene for use.
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|---|---|---|---|
| CN200910311708A CN101717543A (en) | 2009-12-18 | 2009-12-18 | Preparation of conductive plastic comprising asphalt base carbon fibers |
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| CN200910311708A CN101717543A (en) | 2009-12-18 | 2009-12-18 | Preparation of conductive plastic comprising asphalt base carbon fibers |
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| CN102250416A (en) * | 2011-05-25 | 2011-11-23 | 佛山市顺德区高怡新塑料有限公司 | Electromagnetic shielding composite material capable of heating and preparation method thereof |
| CN102250415A (en) * | 2011-05-25 | 2011-11-23 | 佛山市顺德区高怡新塑料有限公司 | Plastic-based composite material capable of conducting electricity and shielding electromagnetic waves and preparation method thereof |
| CN102250414A (en) * | 2011-05-25 | 2011-11-23 | 佛山市顺德区高怡新塑料有限公司 | Plastic-based composite material with electricity conducting and electromagnetic shielding functions and preparation method thereof |
| CN103709510A (en) * | 2013-12-16 | 2014-04-09 | 宁波博利隆复合材料科技有限公司 | Carbon fiber reinforced polypropylene composite material and preparation method thereof |
| CN106192407A (en) * | 2016-07-29 | 2016-12-07 | 郑州峰泰纳米材料有限公司 | Carbon fiber surface modification processing method |
| CN106245318A (en) * | 2016-07-29 | 2016-12-21 | 郑州峰泰纳米材料有限公司 | Carbon fiber coating layer modification processing method |
| CN107163394A (en) * | 2017-06-28 | 2017-09-15 | 太仓清宇特种塑料有限公司 | A kind of low-resistance composite electromagnetic screen plastics |
| CN108192207A (en) * | 2017-12-28 | 2018-06-22 | 聚威工程塑料(上海)有限公司 | A kind of high-performance conductive PP composite material and preparation method |
| CN110564127A (en) * | 2019-08-27 | 2019-12-13 | 珠海格力电器股份有限公司 | Anti-static composite material, preparation method, anti-static shell and purifier |
| CN111279246A (en) * | 2017-07-28 | 2020-06-12 | Smr专利有限公司 | Camera device, rearview device and motor vehicle |
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- 2009-12-18 CN CN200910311708A patent/CN101717543A/en active Pending
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| CN102250416A (en) * | 2011-05-25 | 2011-11-23 | 佛山市顺德区高怡新塑料有限公司 | Electromagnetic shielding composite material capable of heating and preparation method thereof |
| CN102250415A (en) * | 2011-05-25 | 2011-11-23 | 佛山市顺德区高怡新塑料有限公司 | Plastic-based composite material capable of conducting electricity and shielding electromagnetic waves and preparation method thereof |
| CN102250414A (en) * | 2011-05-25 | 2011-11-23 | 佛山市顺德区高怡新塑料有限公司 | Plastic-based composite material with electricity conducting and electromagnetic shielding functions and preparation method thereof |
| WO2012159317A1 (en) * | 2011-05-25 | 2012-11-29 | 佛山市顺德区高怡新塑料有限公司 | Plastic-based composite material capable of conducting electricity and shielding electromagnetic wave and preparation method thereof |
| CN102250414B (en) * | 2011-05-25 | 2013-03-13 | 广东高怡新工程塑料有限公司 | Plastic-based composite material with electricity conducting and electromagnetic shielding functions and preparation method thereof |
| CN102250415B (en) * | 2011-05-25 | 2013-03-13 | 广东高怡新工程塑料有限公司 | Plastic-based composite material capable of conducting electricity and shielding electromagnetic waves and preparation method thereof |
| US20140061552A1 (en) * | 2011-05-25 | 2014-03-06 | Bin Zeng | Plastic-based composite material capable of conducting electricity and shielding electromagnetic wave and preparation method thereof |
| CN103709510A (en) * | 2013-12-16 | 2014-04-09 | 宁波博利隆复合材料科技有限公司 | Carbon fiber reinforced polypropylene composite material and preparation method thereof |
| CN106192407A (en) * | 2016-07-29 | 2016-12-07 | 郑州峰泰纳米材料有限公司 | Carbon fiber surface modification processing method |
| CN106245318A (en) * | 2016-07-29 | 2016-12-21 | 郑州峰泰纳米材料有限公司 | Carbon fiber coating layer modification processing method |
| CN107163394A (en) * | 2017-06-28 | 2017-09-15 | 太仓清宇特种塑料有限公司 | A kind of low-resistance composite electromagnetic screen plastics |
| CN111279246A (en) * | 2017-07-28 | 2020-06-12 | Smr专利有限公司 | Camera device, rearview device and motor vehicle |
| CN111279246B (en) * | 2017-07-28 | 2022-08-16 | Smr专利有限公司 | Camera device, rearview device and motor vehicle |
| CN108192207A (en) * | 2017-12-28 | 2018-06-22 | 聚威工程塑料(上海)有限公司 | A kind of high-performance conductive PP composite material and preparation method |
| CN110564127A (en) * | 2019-08-27 | 2019-12-13 | 珠海格力电器股份有限公司 | Anti-static composite material, preparation method, anti-static shell and purifier |
| CN110564127B (en) * | 2019-08-27 | 2020-11-13 | 珠海格力电器股份有限公司 | Anti-static composite material, preparation method, anti-static shell and purifier |
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Open date: 20100602 |