CN1131166A - Controllable light and biological double degradation plastic film and making method - Google Patents
Controllable light and biological double degradation plastic film and making method Download PDFInfo
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- CN1131166A CN1131166A CN 95111274 CN95111274A CN1131166A CN 1131166 A CN1131166 A CN 1131166A CN 95111274 CN95111274 CN 95111274 CN 95111274 A CN95111274 A CN 95111274A CN 1131166 A CN1131166 A CN 1131166A
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Abstract
The low-density polyethylene, linear low-density polyethylene, modified starch, photosensitizer, photosensitization promoter, titanate type coupling agent and liquid paraffin are passed through such processes of mixing, banbury mastication, breaking and granulating to obtain the controllable photoactive and biological double degradation master granules, then the master granules are mixed with polyethylene resin according to a certain mixing proportion and blow-molded into the invented plastic film by using general plastic film blowing unit at 130-180 deg.C. Said production method is simple in production technique, low in cost and its raw materials are easily available.
Description
The present invention relates to a kind of sealed polyethylene plastic and manufacture method, especially relate to a kind of controllable light, bio-degradable sealed polyethylene plastic and manufacture method.
Container depleted plastic garbage environmental pollution problems such as agricultural mulching, shopping bag, refuse bag, food-drink and the makeup of being made by plastics such as polyethylene, polystyrene, polyester become the public hazards in the whole world the sixth of the twelve Earthly Branches.These plastic garbages are imbedded underground, not only account for the soil but also be difficult to for a long time decompose.Burning disposal will be discharged obnoxious flavour and great amount of carbon dioxide such as hydrogenchloride, bring secondary pollution.The plastics of recycling are less than 1% of plastic garbage total amount at present, but it has accounted for the 7-10% of solid refuse unexpectedly.Be faced with serious environmental pollution day by day, domestic and international in recent years relevant department has strengthened the research and development to decomposable plastics.Degradable plastics, bio-degradable plastics comes out one after another, and up-to-date studies show that can carry out photodegradation simultaneously and biodegradable degradability plastics have good prospect." producing the method for controllable light, the two degrading polyethylene plastics mulch films of microorganism " and " biology and light degradation plastic film " have been introduced respectively as Chinese patent CN90105326.0 and Chinese patent CN93111901.4.The advantage of the double degradation plastic film that this class methods are made is, its production technique is simpler, and cost is lower, and starting material are easy to get; Shortcoming is, because the inherent deficiency of its technology own is difficult to overcome the uncompatibility between polarity starch and the nonpolar polyethylene, causes the performance of product and quality to be difficult to guarantee, can't realize industrialized mass production.As simple technology how, cheap cost, make the reliable controllable light of steady quality, biological double degradation plastic film is a great problem that current macromolecular material industry faces.
Purpose of the present invention is exactly the simple production method of technology that a kind of with low cost, the reliable controllable light of steady quality, biological double degradation plastic film will be provided and make this double degradation plastic film.
Controllable light of the present invention, biological two falling are contained polyvinyl resin, starch, low molecular hydrocarbon class, lipid acid, photosensitizers, photosensitive accelerant and titante coupling agent in the plastics film component.Wherein polyvinyl resin is ldpe resin and/or linear low density polyethylene resin.Starch is Tapioca Starch or Semen Maydis powder etc.Low molecular hydrocarbon class such as paraffin.Lipid acid is lauric acid, palmitinic acid, stearic acid, 20 acid etc.Photosensitizers is the transition metal salt of organometallics such as dibutyl dithiocaarbamate etc.Photosensitive accelerant is hard acid ester salt such as Zinc Stearate, calcium stearate etc.Adopt titante coupling agent such as chelating type-100, chelating type-200 etc., be in order to improve the consistency between polarity starch and the nonpolar polyethylene, its effect is to make the starch particulate more be evenly dispersed in the polyvinyl resin, improve the bonding force of starch and polyethylene two-phase interface greatly, and the master batch after being uniformly dispersed is kept relative stability in the course of processing, finally finishing actual blown film is finished product.
Controllable light provided by the invention.The manufacture method of biological double degradation plastic film is:
1, becomes polyvinyl resin master batch carrier with the linear low density polyethylene melt blending with new LDPE (film grade);
2, starch obtains modified starch after lipid acid and low molecular hydrocarbon class and titante coupling agent modification processing;
3, with polyvinyl resin master batch carrier, modified starch, and photosensitizers, photosensitive accelerant is simple mix after, controlled temperature is at 120-150 ℃, in Banbury mixer mixing 5-10 minute, can be made into promptly after pulling-on piece, fragmentation, granulation that quality is even, outward appearance moist, controllable light of uniform size, bio-degradable polyethylene master batch.It is mixing to adopt the adding pressure type Banbury mixer to carry out, and produces the intensive shearing force in the dependence Banbury mixer starch particulate and photosensitizers can more be evenly dispersed in the master batch, simultaneously the dispersion state of starch particulate and photosensitizers is kept relative stability.
4, with polyvinyl resin with after two degradation master batchs mix, in 130-180 ℃ scope, be blow molded into controllable light, biological double degradation plastic film finished product with common blown film unit.
Used titante coupling agent in the formula for a product of the present invention; in manufacturing processed, abandoned common use twin screw straight forming and made master batch or mixing with double roller plastic-making device; the technology of extrusion moulding granulation again after the fragmentation; adopt distinctive adding pressure type mixer mixing; under in Banbury mixer, acting in shearing force and the titanate coupling agent; make the modified starch content of the two degradation master batchs in the production process of the present invention can be up to 75%; the finished films color and luster is even; modified starch and photosensitizers are uniformly dispersed stable; can make the degraded controllability of degradable film more reliable like this; film can decompose voluntarily by the enzyme change effect of photoaging and microorganism after using.The present invention uses art potato powder or Semen Maydis powder to be starch material, and the source is abundant, cheap; Manufacturing approach craft of the present invention is simple, and mature and reliable is convenient to grasp.The appearance of the controllable light that the inventive method and prescription are made, the plastics film of bio-degradable has been opened up a reality valid approach for solving current domestic and international plastic garbage pollution environment for human survival.
Further specify the present invention below in conjunction with embodiment.
Embodiment 1, packing film and manufacture method
With 100 parts of Tapioca Starchs, 0.1 part in paraffin, 0.2 part of stearic acid, coupling agent chelating type-100 0.4 part, grind after simple the mixing and make modified starch, again with 24.5 parts of linear low density polyethylenes, 0.3 part of dibutyl dithiocaarbamate iron, 0.2 part of Zinc Stearate, 75 parts of modified starches, pressurization is mixing 8 minutes in 140 ℃ of following Banbury mixeies, and two degradation master batchs are made in broken, granulation.Two degradation master batchs and linear low density polyethylene, new LDPE (film grade) are pressed 35: 50: 15 proportionings, and controllable light, bio-degradable film are made in blowing.Wherein linear low density polyethylene and new LDPE (film grade) melt index are respectively 2.43 and 2.06.The relevant performance of film sees Table 1 and table 2.
Embodiment 2: farmland mulch film and manufacture method
With 100 parts of Semen Maydis powder, 0.2 part in paraffin, 0.3 part of lauric acid, coupling agent chelating type-200 0.2 part, grind after simple the mixing and make modified starch, again with 12.25 parts of linear low density polyethylenes, 12.25 parts of new LDPE (film grade)s, 0.3 part of dibutyl dithiocaarbamate iron, 0.4 part of Zinc Stearate, 75 parts of modified starches, pressurization is mixing 8 minutes in 140 ℃ of following Banbury mixeies, and two degradation master batchs are made in broken, granulation.Two degradation master batchs and new LDPE (film grade) are pressed 70: 30 proportionings, and controllable light, bio-degradable film are made in blowing.Wherein linear low density polyethylene and new LDPE (film grade) melt index are respectively 2.43 and 2.06.The relevant performance of film sees Table 1 and table 2.
Table 1 double degradable package film, two degradative plastic film and polyethylene normal film performance are relatively
| Project | Unit | The PE control film | PE double degradable package film | The two degraded of PE field plastic sheeting for farm use |
| Density air transmission coefficient (25 ℃) light transmittance oxygen permeability coefficient tensile load in length and breadth elongation at break right-angle tearing is in length and breadth in length and breadth | ????????9/cm ?????9·m/m·Pa·s ?????????％ ???????mm/m·Pa·s ?????????N ?????????N ?????????％ ?????????％ ?????????N ?????????N | ??????0.9110 ???3.90×10 -14??????88.7 ???1.37×10 11??????≥1.0 ??????≥1.0 ??????≥100 ??????≥100 ??????≥0.5 ??????≥0.5 | ?????0.8964 ???1.03×10 -11??????84.2 ???1.88×10 -11???????1.6 ???????1.6 ???????124 ???????427 ???????1.1 ???????1.1 | ???????0.8931 ?????1.02×10 -13????????84.4 ?????1.83×10 -11?????????1.5 ?????????1.5 ?????????115 ?????????415 ?????????1.0 ?????????1.0 |
Table 2 contains the photodegradation experiment of two degradative membranes of 0.3 ‰ photosensitizerss
(illumination power 1000W)
| Light application time (hour) | [η] limiting viscosity | M (molecular weight) |
| ????????0 ???????24 ???????72 ???????96 ??????176 | ????72.10 ????73.27 ????34.69 ????10.37 ????1.206 | ????2.21×10 4????2.28×10 4????8.03×10 2????1.43×10 3 |
Claims (2)
1, contains polyvinyl resin, starch, low molecular hydrocarbon class, lipid acid, photosensitizers, the controllable light of photosensitive accelerant, biological double degradation plastic film in a kind of component, it is characterized in that also containing in the component titante coupling agent.
2, controllable light as claimed in claim 1, biological two manufacture method of falling plastics film is characterized in that:
1) becomes polyvinyl resin master batch carrier with the linear low density polyethylene melt blending with new LDPE (film grade);
2) starch obtains modified starch after lipid acid and low molecular hydrocarbon class and titante coupling agent modification processing;
3) with polyvinyl resin master batch carrier, after modified starch and photosensitizers, the simple mixing of photosensitive accelerant, controlled temperature is at 120-150 ℃, and is mixing in Banbury mixer, makes controllable light, the two degrading polyethylene master batches of microorganism;
4) with polyvinyl resin with after two degradation master batchs mix, on common blown film unit, make controllable light, biological double degradation plastic film finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 95111274 CN1131166A (en) | 1995-03-13 | 1995-03-13 | Controllable light and biological double degradation plastic film and making method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 95111274 CN1131166A (en) | 1995-03-13 | 1995-03-13 | Controllable light and biological double degradation plastic film and making method |
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| CN1131166A true CN1131166A (en) | 1996-09-18 |
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| CN 95111274 Pending CN1131166A (en) | 1995-03-13 | 1995-03-13 | Controllable light and biological double degradation plastic film and making method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1129638C (en) * | 1999-03-19 | 2003-12-03 | 北京清大亚太科技研究中心 | Degradeable resin composition and its preparation and application |
| CN101921422A (en) * | 2010-07-30 | 2010-12-22 | 王丽红 | Ecologically degradable plastic garbage bags |
| CN101747481B (en) * | 2008-12-02 | 2011-06-01 | 成都市飞龙水处理技术研究所 | Method for preparing biodegradable maize starch polymer resin |
| CN102796285A (en) * | 2011-05-27 | 2012-11-28 | 上海杰事杰新材料(集团)股份有限公司 | Double-degradation starch masterbatch and preparation method thereof |
| CN103951851A (en) * | 2014-05-15 | 2014-07-30 | 达州市金地塑料有限公司 | Mulching film and preparation method thereof |
| CN104031302A (en) * | 2013-03-04 | 2014-09-10 | 中国科学院过程工程研究所 | Controllable oxidative-biological degradation plastic master batch and preparation method thereof |
| CN105075751A (en) * | 2015-07-27 | 2015-11-25 | 陆海荣 | Double-degradable environmental protecting mulching film and manufacturing method thereof |
| CN105694189A (en) * | 2015-09-18 | 2016-06-22 | 安徽义林塑业有限公司 | Production process for photodegradable plastic film |
| CN106220945A (en) * | 2016-07-28 | 2016-12-14 | 芜湖凯奥尔环保科技有限公司 | A kind of master batch of photodegradable plastics particle |
| CN106279960A (en) * | 2016-08-25 | 2017-01-04 | 太仓市鸿运包装材料有限公司 | A kind of biodegradable antibacterial food packaging film and preparation method thereof |
| CN107033394A (en) * | 2017-05-18 | 2017-08-11 | 聂超 | A kind of biodegradable agricultural mulching new material and preparation method thereof |
| CN112795072A (en) * | 2021-01-19 | 2021-05-14 | 洛阳绿之汇塑料降解科技有限公司 | Natural light-microorganism dual-degradation master batch and preparation method thereof |
| CN114591582A (en) * | 2022-03-18 | 2022-06-07 | 深圳市明星盛包装集团有限公司 | Photo-biodegradable plastic film and preparation method thereof |
-
1995
- 1995-03-13 CN CN 95111274 patent/CN1131166A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1129638C (en) * | 1999-03-19 | 2003-12-03 | 北京清大亚太科技研究中心 | Degradeable resin composition and its preparation and application |
| CN101747481B (en) * | 2008-12-02 | 2011-06-01 | 成都市飞龙水处理技术研究所 | Method for preparing biodegradable maize starch polymer resin |
| CN101921422A (en) * | 2010-07-30 | 2010-12-22 | 王丽红 | Ecologically degradable plastic garbage bags |
| CN101921422B (en) * | 2010-07-30 | 2012-09-19 | 王丽红 | Ecologically degradable plastic garbage bags |
| CN102796285B (en) * | 2011-05-27 | 2016-04-06 | 上海杰事杰新材料(集团)股份有限公司 | A kind of two degraded starch master batch and preparation method thereof |
| CN102796285A (en) * | 2011-05-27 | 2012-11-28 | 上海杰事杰新材料(集团)股份有限公司 | Double-degradation starch masterbatch and preparation method thereof |
| CN104031302A (en) * | 2013-03-04 | 2014-09-10 | 中国科学院过程工程研究所 | Controllable oxidative-biological degradation plastic master batch and preparation method thereof |
| CN104031302B (en) * | 2013-03-04 | 2016-07-06 | 中国科学院过程工程研究所 | A kind of controllable oxidization biodegradable plastic master batch and preparation method thereof |
| CN103951851A (en) * | 2014-05-15 | 2014-07-30 | 达州市金地塑料有限公司 | Mulching film and preparation method thereof |
| CN103951851B (en) * | 2014-05-15 | 2016-08-17 | 达州市金地塑料有限公司 | A kind of mulch film and preparation method thereof |
| CN105075751A (en) * | 2015-07-27 | 2015-11-25 | 陆海荣 | Double-degradable environmental protecting mulching film and manufacturing method thereof |
| CN105694189A (en) * | 2015-09-18 | 2016-06-22 | 安徽义林塑业有限公司 | Production process for photodegradable plastic film |
| CN106220945A (en) * | 2016-07-28 | 2016-12-14 | 芜湖凯奥尔环保科技有限公司 | A kind of master batch of photodegradable plastics particle |
| CN106279960A (en) * | 2016-08-25 | 2017-01-04 | 太仓市鸿运包装材料有限公司 | A kind of biodegradable antibacterial food packaging film and preparation method thereof |
| CN107033394A (en) * | 2017-05-18 | 2017-08-11 | 聂超 | A kind of biodegradable agricultural mulching new material and preparation method thereof |
| CN112795072A (en) * | 2021-01-19 | 2021-05-14 | 洛阳绿之汇塑料降解科技有限公司 | Natural light-microorganism dual-degradation master batch and preparation method thereof |
| CN114591582A (en) * | 2022-03-18 | 2022-06-07 | 深圳市明星盛包装集团有限公司 | Photo-biodegradable plastic film and preparation method thereof |
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