CN104231305A - Application of coal ash in improvement of semi-electroconductivity as well as plastic containing coal ash and preparation method of plastic - Google Patents
Application of coal ash in improvement of semi-electroconductivity as well as plastic containing coal ash and preparation method of plastic Download PDFInfo
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- CN104231305A CN104231305A CN201410337825.2A CN201410337825A CN104231305A CN 104231305 A CN104231305 A CN 104231305A CN 201410337825 A CN201410337825 A CN 201410337825A CN 104231305 A CN104231305 A CN 104231305A
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- flyash
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- coal ash
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Abstract
The invention discloses an application of coal ash in improvement of semi-electroconductivity as well as plastic containing coal ash and a preparation method of the plastic. The plastic containing the coal ash is prepared from polystyrene plastic, coal ash and plastic additives, wherein the weight ratio of polystyrene plastic to coal ash is 100: 80 and the plastic additives is one or more of an anti-aging agent, a coupling agent, stearic acid, a heat stabilizer and paraffin. According to the plastic disclosed by the invention, the coal ash is used instead of semi-conductive filler in the polystyrene plastic to prepare polystyrene plastic. The experiment proved that by adding coal ash, except that the semi-electroconductivity is improved, the toughness, the elongation at break and the tensile strength of the polystyrene plastic can be also improved, the elongation and the semi-conductive resistivity of the polystyrene plastic mixed with coal ash are better than those of the conductive material structure; since the coal ash is more cheaper than other conductive materials, the coal ash has great market advantage and the waste is changed into the valuable, and the recycling of resources is achieved.
Description
Technical field
The present invention relates to the applied technical field of flyash in polystyrene plastic, particularly relate to flyash improve semi-conductivity purposes, containing the plastics of flyash and preparation method.
Background technology
Flyash is a kind of industrial residue that fuel-burning power plant pulverized coal firing boiler is discharged, and is to receive to catch the powder got off from the flue gas after coal combustion, and it is the primary solids refuse that power plant discharges.China is main energy sources with coal, and 76% of electric power is produced by coal, and annual with more than 400,000,000 ton, coal, account for 1/3 of national raw coal output, therefore, flyash is one of industrial residue that the current discharge capacity of China is larger.Within 2005, flyash discharge capacity reaches 1.6 tons, becomes waste discharge state the biggest in the world, if a large amount of flyash does not add process, will airborne dust be produced, atmosphere pollution, human body and biology are worked the mischief, and take a large amount of soils, therefore how to recycle the study hotspot that flyash has become current.
Summary of the invention
The object of the present invention is to provide the purposes of coal ash lifting high-polystyrene plastics semi-conductivity, plastic matrix and preparation method thereof containing flyash, to solve the above problems.
The present invention adopts following technical scheme:
The purposes that flyash of the present invention improves semi-conductivity is in the process preparing polystyrene plastic semiconduction masterbatch, adds flyash when broken-(down)rubber in polystyrene plastic.
Plastics containing flyash of the present invention are made up of polystyrene plastic, flyash and plastics additive, and wherein, the weight ratio of polystyrene plastic and flyash is 100:80.
Described plastics additive be following in one or more: anti-aging agent, coupling agent, stearic acid, thermo-stabilizer, paraffin.
Plastics containing flyash of the present invention are made up of the raw material of following weight part: polystyrene plastic 100, flyash 80, anti-aging agent 0.98-1.02, coupling agent 0.98-1.02, stearic acid 0.59-0.61, thermo-stabilizer 2-3, paraffin 3.Preferred polystyrene plastic 100, flyash 80, anti-aging agent 1.02, coupling agent 1.02, stearic acid 0.61, thermo-stabilizer 3, paraffin 3.
Described anti-aging agent is 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer, coupling agent is vinyl three ('beta '-methoxy oxyethyl group) silane, and thermo-stabilizer is the one in tribasic lead sulfate, barium stearate, calcium stearate, tin dilaurate dioctyl tin.
The concrete steps preparing the method for the masterbatch of the plastics containing flyash of the present invention are as follows:
Steps A: by mixing for the flyash of polystyrene plastic and formula ratio half, obtain the product of mixed once;
Step B: add plastics additive and remaining mixture of fly ash in the product of described mixed once, then through twin-screw extrusion plasticizing, obtain final product semiconduction plastic matrix.
Step B obtains final product semiconduction plastic matrix again through twin-screw extrusion, obtains the product that secondary extrudes masterbatch.It is 155-185 DEG C that secondary extrudes plasticating temperature.
Melting temperature in steps A is 75-85 DEG C.
Plasticating temperature of extruding in step B is 155-185 DEG C.
Positively effect of the present invention is as follows:
The present invention uses the semiconduction filler in coal ash instead polystyrene plastic for the preparation of polystyrene plastic.Prove through test, after interpolation flyash except improving semi-conductivity, flyash can also improve polystyrene plastic toughness, elongation at break and tensile strength, and flyash and the mixed elongation of polystyrene plastic, semiconduction resistivity are better than the structure of electro-conductive material; And much lower than other electro-conductive material price of flyash, there is the very large market advantage, and also achieve and turn waste into wealth, the recycling of resource.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope (SEM) photograph of flyash under 15999X in the embodiment of the present invention.
Fig. 2 is the scanning electron microscope (SEM) photograph of flyash under 7999X in the embodiment of the present invention.
Embodiment
The following examples describe in further detail of the present invention.
Embodiment one
Present embodiments provide the purposes of a kind of novelty teabag-raising semi-conductivity of flyash, its embody rule method is: in the process preparing polystyrene (PS) plastic matrix, in mixing, extruding, add flyash.Wherein, by weight, every 100 parts of PS plastics add 80 parts of flyash.
By means of above conductivity, flyash can conductive filler material in substituted for plastic, thus provides a brand-new direction for the recycling of flyash.In addition, prove through test, except improving electroconductibility, the toughness that flyash can also improve, elongation at break and tensile strength, flyash mixes the elongation extruding rear masterbatch with plastics, conductive resistance rate is higher than special conducting material structure; And much lower than special electro-conductive material price of flyash, there is the very large market advantage.
After testing, as shown in table 1, the main component of flyash be silicon, aluminium, iron, calcium, magnesium, sodium, oxide compound, there is potential chemically reactive.Because flyash is microfine, fineness reaches 3500 orders, largest particle is 6 μm, and granulated glass sphere is formed in pyroprocess, therefore the many globulates of fly ash grain, pass through broken classification again, be comparatively advise the sheet structure of selecting through scanning electron microscope analysis result, be better than special conducting material structure, the character of sheet structure has possessed the condition being applied to macromolecular material.(Fig. 1 is the result of amplifying 15999X to the structure of flyash under scanning electron microscope as illustrated in fig. 1 and 2, Fig. 2 is the result of amplifying 7999X), picture display flyash is silicate sheet structure, more regular shape, there are high activity and adsorptivity, there is good consistency with polymer, possessed kaolinic characteristic.
The chemical constitution of table 1 flyash
| Chemical composition | Content (weight percent) |
| Igloss | 2.44 |
| Aluminium sesquioxide | 36.11 |
| Silicon-dioxide | 47.69 |
| Ferric oxide | 5.60 |
| Calcium oxide | 4.90 |
| Magnesium oxide | 0.85 |
| Potassium oxide | 0.41 |
| Sodium oxide | 0.01 |
| Titanium dioxide | 1.51 |
Above the insulation applications of flyash be may be used for the plastics proprietary material preparing Multiple Type.
Embodiment two
On above basis, present embodiments provide a kind of PS plastic matrix containing flyash, it is made up of PS plastics, flyash and plastics additive; Wherein, by weight, every 100 parts of PS plastics add 80 parts of flyash.
This PS plastics toughness, elongation at break and the tensile strength that with the addition of flyash is all significantly improved, and can be applied in PS Plastic conductive plate of material, extraordinary chip shaft collar conduction.Wherein plastics additive can adopt following in one or more: anti-aging agent (prevent plastics aging in life-time service), coupling agent (caking agent of plastics, improve the bonding force of plastics and other material), stearic acid (lubricant and steady agent), paraffin are that profit is lived agent, more preferably, the flyash obtained plastics performance of following additive of arranging in pairs or groups more has excellence: 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer (i.e. RD, as anti-aging agent), vinyl three ('beta '-methoxy oxyethyl group) silane (i.e. coupling agent 172).
Embodiment three
Advantageous embodiment is made on the basis of embodiment two, and obtain the conductive plastics containing flyash that performance is more excellent, it consists of the following composition:
By weight, 100 parts, PS plastics, 80 parts, flyash, anti-aging agent 0.98-1.02 part, coupling agent 0.98-1.02 part, stearic acid 0.59-0.61 part, thermo-stabilizer 2-3 part, 3 parts, paraffin.
Each composition more than in formula all can adopt any part within the scope of its number.
Embodiment four to ten
For more clearly describing the present invention, provided hereinafter embodiment four to ten.
Table 2
In upper table, anti-aging agent is 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer, and coupling agent is vinyl three ('beta '-methoxy oxyethyl group) silane, and thermo-stabilizer is tin dilaurate dioctyl tin.
Embodiment 11
The plastics containing flyash that foregoing embodiments is mentioned all can adopt the preparation method of the present embodiment, and it comprises the following steps:
Steps A: by PS plastics and flyash mixing, obtain the product of mixed once.
Step B: add plastics additive and flyash mixing is plasticated in the product of mixed once material, more hot-extrudable, obtain final product.
Each operation in above-mentioned preparation method can also be improved further, such as:
Mixing temperature in steps A is 75-85 DEG C; And/or the melting temperature in the first step of steps A is 75-85 DEG C; And/or, step B second and/or, the plasticizing extrusion temperature 145-175 DEG C in the second step of step.
Embodiment 12
The PS plastics containing flyash that foregoing embodiments is mentioned can also adopt the preferred preparation method of the present embodiment, and it comprises:
Steps A: first plastics are closed flyash through mixing machine mixing (mixing machine temperature 75-85 DEG C) 8min, after add, stearic acid, coupling agent mixing (namely mixing in mixing machine) 5min, add flyash one half-sum paraffin again, remix 6min, namely completes mixing.
Further mixing mixes, and obtains end product.
Be final product in step B technique twin-screw extrusion masterbatch.
In addition, before interpolation flyash, pre-treatment can also be done to flyash, to improve the quality and performance of rubber.Such as, first fly ash surface modification process is changed into hydrophobicity by wetting ability: flyash is lyophilic powder, poor with plastic compatible, by flyash modified for surface hydrophobicity (being namely modified as lipophilicity material), make itself and rubber have better consistency, improve use properties and the result of use of plastics.
Embodiment 13
The performance comparison test of PS plastics of the present invention and other plastics
Contrasted with the plastics containing other conductive filler material by PS plastics containing flyash of the present invention, detect the thickness of these plastics, tensile strength, elongation at break and volume conduction resistivity, result is as shown in table 3.Wherein, the title of plastics replaces, except flyash with " title of PS+ conductive filler material ", the additive all identical (all adopting the proportioning of embodiment six) that often kind of plastics are used, preparation method is identical, cure conditions identical (being 160 DEG C, 16min).For PS plastics+flyash, prepared by its formula according to embodiment six, and all the other plastics are all that the flyash in " PS plastics+flyash " plastics is replaced (such as, flyash being replaced with conductive copper powder, aluminium powder carbon black etc.).
The performance of table 3 rubber of the present invention and other rubber
The method detected: tensile strength, special tensilon, elongation at break is completed by special tensilon, and the measuring method of conductive resistance rate is completed by special resistance instrument.
As seen from the results in Table 3, the intensity of the PS plastics containing flyash of the present invention and elongation conductive resistance rate all exceed the index of copper powder, aluminium powder, carbon black materials, formula masterbatch, and intensity and elongation at break are all higher than the plastics with other formula.Flyash is in being conductive resistance rate with the most excellent performance in plastic formula, and the excellent properties of other material of elongation, strength ratio performance is equal.Significantly material cost is reduced than other material in black plastic formula.
In a word, allotment party's material of other material mixture ratio compared with the plastic matrix made in conventional art, PS plastic matrix of the present invention has following advantage: 1, the raising of conductive resistance rate excellence and elongation at break; 2, resources advantage: flyash belongs to resource comprehensive utilization of waste materials; 3, price advantage: other electro-conductive material 4500-12000 yuan/ton, 500-650 yuan/ton after flyash comprehensive process.Significantly reducing the cost of PS plastic matrix. flyash is turned waste into wealth, and reduce topsoil, improving economic attached value, is the technological gap in a world.
The material (copper powder, aluminium powder) that middle PS plastic material of the present invention is worth through the special semiconduction noble quality dosed in coal ash instead PS plastics, flyash is that 1/5th these formulation costs of of (copper powder, aluminium powder) price are low, for country saves large quantities of copper and aluminium, flyash also can improve the toughness of PS plastics, turns waste into wealth.
Add PS masterbatch material that flyash formula makes through Testing index result:
National standard: semiconduction resistance 10
5-9
Enterprise's examination criteria: semiconduction resistance 10
5-9
Country's plastics detected: semiconduction resistance 10
5-8
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. flyash improves the purposes of semi-conductivity, it is characterized in that: in the process preparing polystyrene plastic semiconduction masterbatch, adds flyash when broken-(down)rubber in polystyrene plastic.
2., containing plastics for flyash, it is characterized in that: described plastics are made up of polystyrene plastic, flyash and plastics additive, wherein, the weight ratio of polystyrene plastic and flyash is 100:80.
3. the plastics containing flyash as claimed in claim 2, is characterized in that: described plastics additive be following in one or more: anti-aging agent, coupling agent, stearic acid, thermo-stabilizer, paraffin.
4. the plastics containing flyash as claimed in claim 2, is characterized in that: described plastics are made up of the raw material of following weight part: polystyrene plastic 100, flyash 80, anti-aging agent 0.98-1.02, coupling agent 0.98-1.02, stearic acid 0.59-0.61, thermo-stabilizer 2-3, paraffin 3.
5. the plastics containing flyash as claimed in claim 4, it is characterized in that: described anti-aging agent is 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer, coupling agent is vinyl three ('beta '-methoxy oxyethyl group) silane, and thermo-stabilizer is the one in tribasic lead sulfate, barium stearate, calcium stearate, tin dilaurate dioctyl tin.
6. prepare a method for the masterbatch of the plastics containing flyash as claimed in claim 2, it is characterized in that: the concrete steps of described method are as follows:
Steps A: by mixing for the flyash of polystyrene plastic and formula ratio half, obtain the product of mixed once;
Step B: add plastics additive and remaining mixture of fly ash in the product of described mixed once, then through twin-screw extrusion plasticizing, obtain final product semiconduction plastic matrix.
7. method as claimed in claim 6, is characterized in that: step B obtains final product semiconduction plastic matrix again through twin-screw extrusion, obtains the product that secondary extrudes masterbatch.
8. method as claimed in claim 6, is characterized in that: the melting temperature in steps A is 75-85 DEG C.
9. method as claimed in claim 6, is characterized in that: the plasticating temperature of extruding in step B is 155-185 DEG C.
10. method as claimed in claim 7, is characterized in that: it is 155-185 DEG C that secondary extrudes plasticating temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410337825.2A CN104231305A (en) | 2014-07-15 | 2014-07-15 | Application of coal ash in improvement of semi-electroconductivity as well as plastic containing coal ash and preparation method of plastic |
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|---|---|---|---|
| CN201410337825.2A CN104231305A (en) | 2014-07-15 | 2014-07-15 | Application of coal ash in improvement of semi-electroconductivity as well as plastic containing coal ash and preparation method of plastic |
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Citations (4)
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| CN1306033A (en) * | 2000-11-27 | 2001-08-01 | 中国科学院长春应用化学研究所 | Plasticizing and calender method for producing composite products of used plastics and powdered coal ash |
| CN101798404A (en) * | 2010-03-16 | 2010-08-11 | 陈利 | Flexible non-metallic conducting material |
| WO2010140908A2 (en) * | 2009-06-03 | 2010-12-09 | Moszczanski Janusz | Method and system for producing composite materials from the waste of thermoplastic plastics |
| CN103252952A (en) * | 2013-05-29 | 2013-08-21 | 淮南市亿兴塑胶制品有限公司 | Special-shaped panel prepared from thermoplastic plastics filled with mixture of wheat straw fibers and powder coal ash as well as preparation method of special-shaped panel |
-
2014
- 2014-07-15 CN CN201410337825.2A patent/CN104231305A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306033A (en) * | 2000-11-27 | 2001-08-01 | 中国科学院长春应用化学研究所 | Plasticizing and calender method for producing composite products of used plastics and powdered coal ash |
| WO2010140908A2 (en) * | 2009-06-03 | 2010-12-09 | Moszczanski Janusz | Method and system for producing composite materials from the waste of thermoplastic plastics |
| CN101798404A (en) * | 2010-03-16 | 2010-08-11 | 陈利 | Flexible non-metallic conducting material |
| CN103252952A (en) * | 2013-05-29 | 2013-08-21 | 淮南市亿兴塑胶制品有限公司 | Special-shaped panel prepared from thermoplastic plastics filled with mixture of wheat straw fibers and powder coal ash as well as preparation method of special-shaped panel |
Non-Patent Citations (2)
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| 固体物料分选理论与工艺;张一敏;《固体物料分选理论与工艺》;冶金工业出版社;20071031;第409页 * |
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Application publication date: 20141224 |