CN104804455A - Plastic degrading material and preparation method thereof - Google Patents
Plastic degrading material and preparation method thereof Download PDFInfo
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- CN104804455A CN104804455A CN201410040896.6A CN201410040896A CN104804455A CN 104804455 A CN104804455 A CN 104804455A CN 201410040896 A CN201410040896 A CN 201410040896A CN 104804455 A CN104804455 A CN 104804455A
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- degradation material
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Abstract
The invention discloses a plastic degrading material and a preparation method thereof. The plastic degrading material comprises 60-75wt% of calcium carbonate, 15-20wt% of a binder, 4-8wt% of a lubricant, 1-4wt% of stearic acid and 5-20wt% of a degrading additive. Calcium carbonate adopted as a base material reacts with water in environment to increase the contact area with oxygen, so the oxidation effect is enhanced, the plastic degrading time is shortened, the use amount of a synthetic polymer is reduced, and the cost is reduced; and the addition of the degrading additive accelerates plastic degradation, and the use amount of the additive is controlled to freely control the plastic product degrading time. The preparation method comprises the steps of directly mixing polyethylene and a modification far infrared transparent agent, and carrying out melt extrusion. The preparation method has the advantages of simple process, low cost, and suitableness for industrial production.
Description
Technical field
The invention belongs to environment-friendly materials technical field, relate to a kind of plastic degradation material and preparation method thereof specifically.
Background technology
Plastics are because its quality is light, intensity is high, the advantage broad development in a lot of fields such as stable chemical performance and cheapness.Plastics industry is very fast, and does not still have appropriate treatment process with the plastics crossed, and plastic garbage just brings serious pollution to physical environment.Abandoning of plastic garbage pollutes the environment, buried can appropriation of land, burning then can polluted air, and the basic method of dealing with problems develops degradable plastics exactly, replaces non-degradable plastics with this; Or the agent of development plastic degradation, degrades " white garbage " that formed.
The current state of the art is adopt the method and the blended production of PE or PS that add starch and photosensitizers mostly, natural degradable macromole such as starch etc. is mixed in petroleum chemistry plastics, although the plastic degradation cycle can be shortened, but the product after fragmentation allows still can not live and still needs to degrade for a long time, add the difficulty reclaimed again, cause secondary pollution; Secondly, this kind of product exceeds more than 30% than conventional plastic product cost, is difficult to promote; Further, the agent of most conventional degradative plastics has following shortcoming: the control of degradation rate is more difficult, and degraded is too slow, and particularly the kind of applicable raw materials for plastics production is very limited.
Up to the present, domestic still do not have can one of percentage hundred degraded, fast degradation and the low plastic degradation agent of price come out.In recent years, along with the raising of living standards of the people, the usage quantity of disposable plastic packing articles increases day by day, the problem of environmental pollution brought thus is also on the rise, for this reason, according to different purposes and envrionment conditions, exploitation controllability environment-degradable plastic, becomes problem demanding prompt solution.
Summary of the invention
The object of the invention is to the above-mentioned deficiency overcoming prior art, provide a kind of and accelerate plastic degradation and the controlled plastic degradation material of degradation speed.
Another object of the present invention is to provide a kind of technique simple plastic degradation material preparation method.
In order to realize foregoing invention object, technical scheme of the present invention is as follows:
A kind of plastic degradation material, comprises the recipe ingredient of following weight percent:
And a kind of preparation method of plastic degradation material, comprises the steps:
Each component is taken respectively according to above-mentioned plastic degradation material prescription;
The each component of above-mentioned plastic degradation material is carried out mixing mixing treatment, melt extrudes, obtain above-mentioned plastic degradation material.
And a kind of application method of plastic degradation material, adds above-mentioned plastic degradation material in raw materials for plastics production and manufactures degredation plastic goods.
Plastic degradation material of the present invention take calcium carbonate as base-material, reaction of moisture in itself and environment is to increase the contact area with oxygen, thus strengthen the degradation time of oxygenizement and shortening plastics, and reduce the consumption of synthesis polymer (such as polypropylene, acrylic resin, linear polyethylene etc.), reduce costs; By adding degradant additive, can plastic degradation being accelerated, by controlling its consumption, freely controlling final plastics degradation time can be reached.
Plastic degradation material is directly respectively organized mixed melting and is extruded by the preparation method of plastic degradation material of the present invention, and this preparation method's technique is simple, with low cost, is suitable for suitability for industrialized production.
Plastic degradation material of the present invention, owing to having above-mentioned premium properties, is added in raw materials for plastics production and is manufactured degredation plastic goods.
Embodiment
In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiments provide and a kind ofly accelerate plastic degradation and the controlled plastic degradation material of degradation speed.This plastic degradation material, comprises the recipe ingredient of following weight percent:
In a preferred embodiment of the invention, above-mentioned plastic degradation material, comprises the recipe ingredient of following weight percent:
In another preferred embodiment of the invention, above-mentioned plastic degradation material, comprises the recipe ingredient of following weight percent:
Particularly, above-mentioned degradant additive comprises the recipe ingredient of following weight percent: poly butyric ester 10 ~ 60%, organic nitrogen 20 ~ 60%, alcohols 10 ~ 30%, cellulose family 10 ~ 20%.This degradant additive is the important component of plastic degradation material of the present invention, applies plastics degraded that it makes thoroughly, the waste toxicological harmless of its goods, still capable of using as feed, fertilizer after recovery, and then forms the benign cycle of physical resources.
In another preferred embodiment of the present invention, above-mentioned degradant additive comprises the recipe ingredient of following weight percent: starch-based polymer 0 ~ 100%, cellulose-based polymer 0 ~ 100%; Wherein, starch-based polymer is selected from least one in W-Gum, wheat starch, potato starch, rice starch, and cellulose-based polymer is selected from cellulose and its derivates.The important component of this plastic degradation material, under the effect of light, oxygen, heat and microorganism, has the characteristic of multiple degrading; Especially degrade under aerobic environment, final main generation carbonic acid gas and water, can not cause secondary pollution after entering air and soil; And degradation process is after inductive phase, and it can lose original using function, and mechanical property sharply declines, and is then degraded into fragment and powder, final and environment assimilates.
Above-mentioned calcium carbonate is preferably light calcium carbonate, and the reaction of moisture in this light calcium carbonate and environment to increase the contact area with oxygen, thus strengthens oxygenizement and shortens the degradation time of plastics; This light calcium carbonate can also increase the snappiness of product, during for the manufacture of plastic film or plastics bag, product can be made fluffy, have good transmittance, ductility and flexibility.And by adding light calcium carbonate, greatly reduce the consumption of synthesis polymer (polypropylene, acrylic resin or or linear polyethylene), prepare through rational processing condition, not only increase quality product, also under the prerequisite ensureing degradation effect, make cost reduce 60%.
Particularly, above-mentioned binding agent is at least one in polypropylene, carboxymethyl cellulose, Xylo-Mucine, in polypropylene, is preferably polypropylene; This preferred polypropylene for increasing the cohesive force between each component to promote the granulation of plastic degradation material.Above-mentioned lubricant is preferably the whiteruss of 50 ~ 58%, promotes the mobility in forcing machine between the granulation stage that this lubricant can increase plastic degradation material.Above-mentioned stearic acid comprises autoxidisable unsaturated group, and it is for promoting the incipient degradation of plastic waste material.
The plastic degradation material of the embodiment of the present invention take calcium carbonate as base-material, reaction of moisture in itself and environment is to increase the contact area with oxygen, thus strengthen the degradation time of oxygenizement and shortening plastics, and reduce the consumption of synthesis polymer (such as polypropylene, acrylic resin, linear polyethylene etc.), reduce costs; By adding degradant additive, can plastic degradation being accelerated, by controlling its consumption, freely controlling final plastics degradation time can be reached.And by acting synergistically with binding agent, lubricant, stearic acid, make the plastic degradation material character of the embodiment of the present invention stable, not easily broken.
Correspondingly, embodiments provide the preparation method of plastic degradation material above, the method comprises the steps:
S01, takes recipe ingredient: take each component respectively according to above-mentioned plastic degradation material prescription;
S02, obtains plastic degradation material: each component of above-mentioned plastic degradation material carries out mixing mixing treatment, melt extrudes, and obtains above-mentioned plastic degradation material.
Particularly, in above-mentioned steps S01, take each component of above-mentioned plastic degradation material in proportion respectively with electronic scale (precision is 1.0%), wherein the proportioning of each component as described above, in order to save length, do not repeat them here.
Particularly, in above-mentioned steps S02, each component of plastic degradation material taken by step S01 adds in high-speed mixer and mixes, then mixture being placed in dual-screw-stem machine, through melt extruding, granulation, obtaining above-mentioned plastic degradation material, its diameter is 2mm, and long is 3-4mm, in cylinder shape.
Further, in this step S02, wherein, the temperature melt extruded is 110 ~ 170 DEG C, and pressure is 10 ~ 20Mpa, and the time is 1 ~ 2 minute; The parallel double-screw granulation unit (specification: screw slenderness ratio is 44:1, rotating speed is 30 ~ 500rpm) that the granulating equipment used is model is TE-65.
Further, in this step S02, the concrete technology condition melt extruded is: screw slenderness ratio is 28 ~ 44, one district's temperature 110 ~ 130 DEG C, two district's temperature 120 ~ 140 DEG C, three district's temperature 130 ~ 160 DEG C, four district's temperature 120 ~ 150 DEG C, head temperature is 135 ~ 170 DEG C, and the barrel residence time is 1 ~ 2 minute, melt pressure 10 ~ 20MPa; Above-mentioned processing condition are preferably: screw slenderness ratio is 40:1, district's temperature 120 DEG C, two district's temperature 130 DEG C, three district's temperature 140 DEG C, four district's temperature 130 DEG C, and head temperature is 150 DEG C, and the barrel residence time is 1.5 minutes, and melt pressure is 15MPa.
Each for plastic degradation material component mixed melting is directly extruded by the preparation method of above-mentioned plastic degradation material, and this preparation method's technique is simple, with low cost, is suitable for suitability for industrialized production.
Correspondingly, embodiments provide a kind of application method of plastic degradation material, above-mentioned plastic degradation material is added the plastics of manufacture class degraded in raw materials for plastics production.Wherein, can conventionally for being blow molded into agricultural mulching, packing film, food bag, freshness protection package, refuse bag etc.; Optionally and can need at blowing mulch film or packing film master batch consumption, in synthesis high molecule plastic, add degradable starch-based plastic masterbatch 30wt% of the present invention, adopt common film blowing device, blow under temperature is 160 DEG C of-200 DEG C of conditions.The mulch film blown or packing film any surface finish, be uniformly dispersed, transmittance >=70%.After testing, prepared mulch film or the degradation cycle of packing film can be controlled in about 3 months, start degraded after 3 months, degradable rear without any residual.
Now in conjunction with specific examples, saturating far infrared composite of the embodiment of the present invention and preparation method thereof is further elaborated.
Embodiment 1
A kind of plastic degradation material, comprises the recipe ingredient of following weight percent:
The preparation method of this plastic degradation material is as follows:
S11, takes recipe ingredient: take each component respectively according to above-mentioned plastic degradation material prescription;
S12, obtain plastic degradation material: each component of plastic degradation material taken by step S11 adds in high-speed mixer carries out mixing mixing treatment, and then mixture is placed in dual-screw-stem machine and melt extrudes, the temperature melt extruded is 110 DEG C, pressure is 10Mpa, and the time is 1 minute; Granulation, obtains above-mentioned plastic degradation material.
Embodiment 2
A kind of plastic degradation material, comprises the recipe ingredient of following weight percent:
The preparation method of this plastic degradation material is as follows:
S21, takes recipe ingredient: take each component respectively according to above-mentioned plastic degradation material prescription;
S22, obtain plastic degradation material: each component of plastic degradation material taken by step S21 adds in high-speed mixer carries out mixing mixing treatment, and then mixture is placed in dual-screw-stem machine and melt extrudes, the temperature melt extruded is 170 DEG C, pressure is 20Mpa, and the time is 2 minutes; Granulation, obtains above-mentioned plastic degradation material.
Embodiment 3
A kind of plastic degradation material, comprises the recipe ingredient of following weight percent:
The preparation method of this plastic degradation material is as follows:
S31, takes recipe ingredient: take each component respectively according to above-mentioned plastic degradation material prescription;
S32, obtain plastic degradation material: each component of plastic degradation material taken by step S31 adds in high-speed mixer carries out mixing mixing treatment, and then mixture is placed in dual-screw-stem machine and melt extrudes, the temperature melt extruded is 150 DEG C, pressure is 15Mpa, and the time is 1 minute; Granulation, obtains above-mentioned plastic degradation material.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a plastic degradation material, comprises the recipe ingredient of following weight percent:
2. plastic degradation material as claimed in claim 1, is characterized in that plastic degradation material comprises the recipe ingredient of following weight percent:
3. plastic degradation material as claimed in claim 1, it is characterized in that, described plastic degradation material, comprises the recipe ingredient of following weight percent:
4. the plastic degradation material as described in claims 1 to 3, is characterized in that, described degradant additive comprises the recipe ingredient of following weight percent:
5. the plastic degradation material as described in claims 1 to 3, is characterized in that, described degradant additive comprises the recipe ingredient of following weight percent:
Starch-based polymer 0 ~ 100%
Cellulose-based polymer 0 ~ 100%.
6. the plastic degradation material as described in claims 1 to 3, is characterized in that, described binding agent is at least one in polypropylene, carboxymethyl cellulose, Xylo-Mucine.
7. the plastic degradation material as described in claims 1 to 3, is characterized in that, described lubricant is the whiteruss of 50 ~ 58%.
8. a preparation method for plastic degradation material, comprises the steps:
Each component is taken respectively according to the arbitrary described plastic degradation material prescription of claim 1 ~ 7;
The each component of described plastic degradation material is carried out mixing mixing treatment, melt extrudes, obtain described plastic degradation material.
9. a preparation method for plastic degradation material, is characterized in that, described in the temperature that melt extrudes be 110 ~ 170 DEG C, pressure is 10 ~ 20Mpa, and the time is 1 ~ 2 minute.
10. an application method for plastic degradation material, adds the plastic degradation material that preparation method described in the plastic degradation material described in claim 1 ~ 7 and claim 8 ~ 9 obtains in raw materials for plastics production and manufactures degredation plastic goods.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114872222A (en) * | 2022-04-18 | 2022-08-09 | 苏州银锐环保材料有限公司 | Edible plastic agent production system and production method |
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| CN1242395A (en) * | 1998-07-21 | 2000-01-26 | 沈阳绿环生物降解技术开发有限公司 | Full degradable additive and full degradable plastic products |
| CN1590449A (en) * | 2003-08-14 | 2005-03-09 | 韩国见喜株式会社 | Additive composition for promoting degradation of plastics |
| CN101525487A (en) * | 2009-03-31 | 2009-09-09 | 武汉华丽生物材料有限公司 | Composite material degraded by environment and preparation method thereof |
| CN101760037A (en) * | 2008-12-23 | 2010-06-30 | 金发科技股份有限公司 | Completely degraded plant powder modified thermoplastics composite material and preparation method thereof |
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2014
- 2014-01-28 CN CN201410040896.6A patent/CN104804455A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1242395A (en) * | 1998-07-21 | 2000-01-26 | 沈阳绿环生物降解技术开发有限公司 | Full degradable additive and full degradable plastic products |
| CN1590449A (en) * | 2003-08-14 | 2005-03-09 | 韩国见喜株式会社 | Additive composition for promoting degradation of plastics |
| CN101760037A (en) * | 2008-12-23 | 2010-06-30 | 金发科技股份有限公司 | Completely degraded plant powder modified thermoplastics composite material and preparation method thereof |
| CN101525487A (en) * | 2009-03-31 | 2009-09-09 | 武汉华丽生物材料有限公司 | Composite material degraded by environment and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114872222A (en) * | 2022-04-18 | 2022-08-09 | 苏州银锐环保材料有限公司 | Edible plastic agent production system and production method |
| CN114872222B (en) * | 2022-04-18 | 2023-09-26 | 苏州银锐环保材料有限公司 | Plastic eating agent production system and production method |
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