CN101619144A - Multifunctional biodegradable starch-based master batch and production method thereof - Google Patents
Multifunctional biodegradable starch-based master batch and production method thereof Download PDFInfo
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- CN101619144A CN101619144A CN200810064855A CN200810064855A CN101619144A CN 101619144 A CN101619144 A CN 101619144A CN 200810064855 A CN200810064855 A CN 200810064855A CN 200810064855 A CN200810064855 A CN 200810064855A CN 101619144 A CN101619144 A CN 101619144A
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Abstract
The invention discloses a multifunctional biodegradable starch-based master batch and a production method thereof. The starch-based master batch consists of the following raw materials in portion by weight: 60 to 80 portions of starch, 0.5 to 3 portions of composite coupling agent, 1 to 3 portions of metallocene polyolefin, 1 to 5 portions of polyethylene, 1 to 5 portions of polypropylene, 0.3 to 1 portion of lubricant, 5 to 10 portions of moisture absorbent, 0.3 to 1 portion of heat stabilizer, and 0.3 to 1.5 portions of cross linker. Because of stable structure, good heat resistance, controllable viscosity and wide application range, the starch-based master batch after mixing with high-density polyethylene or low-density polyethylene can be subjected to blow-molding film processing; the adding amount of the degradable master batch is far higher than that of the prior method, reaches 35 percent, and is higher than 18 percent prescribed in national standard, so the biodegradable property is more reliable; and the biodegradable starch-based master batch can be widely applied in various plastic processing fields such as extruding-tabletting-suck molding-forming processing, hollow blow-molding forming processing, injection molding processing, and the like.
Description
Technical field:
The present invention relates to a kind of biodegradable starch-based master batch and production method thereof
Background technology:
At present both at home and abroad but the biodegradable material majority of making thermoplasticity processing with starch is starch is handled and then to be carried out and a spot of polymer grafting processing with many alcohols materials or coupling agent, but form the thermoplasticity material processed at last, the material that this method is produced generally can only be used in extrudes the processing of compressing tablet class, and then carry out the secondary plastic uptake and be processed into various goods, the material that this method is produced uses that face is narrow, structural instability, thermotolerance and winter hardiness is poor, easily decompose, variable color.Therefore low owing to starch content, the difficult degraded of the disposable lunch-box that for example adopts biodegradable starch-based grain to produce easily causes environmental pollution; Because starch content is low, polyethylene, polypropylene content height also need to use expensive coupling agent, so cost are higher; The shortcoming that also has complex manufacturing simultaneously.Done multiple effort in order to address these problems people, the patent that one key name is called " a kind of biodegradable starch-based pellet and production method thereof " is disclosed for No. 03114542.6 as Chinese patent, introduced a kind of biodegradable starch-based pellet and production method thereof, this biodegradable starch-based pellet is made of following materials of weight proportions: W-Gum 50-55%, polipropene 25-35%, polyethylene 5-10%, ethylene-vinyl acetate copolymer 9-11%, titanium dioxide 0.1-0.5%, polyethylene wax 0.2-1.5%, upright powder 0.2-1.5%, paraffin 0.3%; Higher, the easy degraded of this invention basal granule material starch content, cost is low and production technique is simple.The problem that exists is that starch content has much room for improvement, the thermotolerance of product and winter hardiness are relatively poor, and application surface need be widened; Addressing this problem becomes urgent need.
The content of invention:
Overcome the deficiencies in the prior art, the thermotolerance and the winter hardiness that design a kind of starch content height, product are good, that the need of wide application are widened is simple in structure, gas producing efficiency is high, working process is pollution-free, the multifunctional biodegradable starch-based master batch of applied range and production method thereof.Multifunctional biodegradable starch-based master batch and production method thereof.This multifunctional biodegradable starch-based master batch is made of the raw material of following weight part: starch 60-80 part, composite coupler 0.5-3 part, metallocene-polyolefin 1-3 part, polyethylene 1-5-part, polypropylene 1-5 part, lubricant 0.3-1 part, moisture adsorbent 5-10 part, thermo-stabilizer 0.3-1 part, linking agent 0.3-1.5 part.Its production method is: drop into starch and composite coupler high-speed mixing when temperature reaches 85 ℃ in high mixer, when temperature reaches 100 ℃, moisture adsorbent, metallocene-polyolefin are dropped into high-speed mixing, when temperature reaches 110 ℃-115 ℃, again polyethylene, polypropylene, lubricant, thermo-stabilizer, linking agent are dropped into together, low speed mixing becomes masterbatch, when temperature reaches 120 ℃-130 ℃, masterbatch is put into cooling tank be cooled to 80 ℃; Masterbatch is placed on extruding pelletization in the twin screw extruder, and this pellet is exactly a multifunctional biodegradable starch-based master batch.Method of the present invention at first adopts mechanical process that starch is carried out structure-type and destroys, with the combined type coupling agent starch is handled then, the moisture that produces during processing is digested by height suction type resin, make starch become biodegradable biological lipid, adopt metallocene-polyolefin to carry out increase-volume then, adding linking agent carries out crosslinked, controlling viscosity by add-on makes the starch-base biodegradation structure of matter stable, thermotolerance improves, improve 25 ℃-30 ℃ than ordinary method, starch content can reach 60%-80%, viscosity can be controlled, winter hardiness is good, can use down at-35 ℃, and is indeformable, not embrittlement.Because Stability Analysis of Structures, good heat resistance, viscosity may command, therefore material of the present invention can be applicable to extrude multiple field of plastics processing such as the processing of compressing tablet plastics sucking moulding, hollow blow molding processing, injection moulding processing; With can carry out blown film processing after high density polyethylene(HDPE) or new LDPE (film grade) mix, its degradable master batch addition is higher than at present existing method far away, reaches 35%, be higher than stipulate in the national standard 18%, make biodegradability more reliable.
Embodiment:
A most preferred embodiment of the present invention is got starch 60kg, composite coupler 3kg, metallocene-polyolefin 3kg, polyethylene 5kg, polypropylene 5kg, lubricant 1kg, moisture adsorbent 10kg, thermo-stabilizer 1kg, linking agent 1.5kg.Its production method is: drop into starch and composite coupler high-speed mixing when temperature reaches 85 ℃ in high mixer, when temperature reaches 100 ℃, moisture adsorbent, metallocene-polyolefin are dropped into high-speed mixing, when temperature reaches 110 ℃-115 ℃, again polyethylene, polypropylene, lubricant, thermo-stabilizer, linking agent are dropped into together, low speed mixing becomes masterbatch, when temperature reaches 120 ℃-130 ℃, masterbatch is put into cooling tank be cooled to 80 ℃; Masterbatch is placed on extruding pelletization in the twin screw extruder, and this pellet is exactly a multifunctional biodegradable starch-based master batch.
Second embodiment of the present invention got starch 80kg, composite coupler 0.5kg, metallocene-polyolefin 1kg, polyethylene 1kg, polypropylene 1kg, lubricant 0.3kg, moisture adsorbent 5kg, thermo-stabilizer 0.3kg, linking agent 0.3kg.Its production method is with embodiment 1.
Claims (2)
1, a kind of multifunctional biodegradable starch-based master batch is characterized in that: the raw material by following weight part constitutes: starch 60-80 part, composite coupler 0.5-3 part, metallocene-polyolefin 1-3 part, polyethylene 1-5-part, polypropylene 1-5 part, lubricant 0.3-1 part, moisture adsorbent 5-10 part, thermo-stabilizer 0.3-1 part, linking agent 0.3-1.5 part.
2, multifunctional biodegradable starch-based master batch as claimed in claim 1, it is characterized in that: its production method is: drop into starch and composite coupler high-speed mixing when temperature reaches 85 ℃ in high mixer, when temperature reaches 100 ℃, moisture adsorbent, metallocene-polyolefin are dropped into high-speed mixing, when temperature reaches 110 ℃-115 ℃, again polyethylene, polypropylene, lubricant, thermo-stabilizer, linking agent are dropped into together, low speed mixing becomes masterbatch, when temperature reaches 120 ℃-130 ℃, masterbatch is put into cooling tank be cooled to 80 ℃; Masterbatch is placed on extruding pelletization in the twin screw extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810064855A CN101619144A (en) | 2008-07-04 | 2008-07-04 | Multifunctional biodegradable starch-based master batch and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810064855A CN101619144A (en) | 2008-07-04 | 2008-07-04 | Multifunctional biodegradable starch-based master batch and production method thereof |
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| CN101619144A true CN101619144A (en) | 2010-01-06 |
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| CN200810064855A Pending CN101619144A (en) | 2008-07-04 | 2008-07-04 | Multifunctional biodegradable starch-based master batch and production method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329446A (en) * | 2011-07-23 | 2012-01-25 | 佛山市衡龙科技有限公司 | Transparent starch-based degradable agricultural mulching film composite material |
| CN110845767A (en) * | 2019-11-08 | 2020-02-28 | 南通龙达生物新材料科技有限公司 | Starch plastic composition and preparation method and application thereof |
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2008
- 2008-07-04 CN CN200810064855A patent/CN101619144A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329446A (en) * | 2011-07-23 | 2012-01-25 | 佛山市衡龙科技有限公司 | Transparent starch-based degradable agricultural mulching film composite material |
| CN102329446B (en) * | 2011-07-23 | 2013-02-27 | 佛山市衡龙科技有限公司 | Transparent starch-based degradable agricultural mulching film composite material |
| CN110845767A (en) * | 2019-11-08 | 2020-02-28 | 南通龙达生物新材料科技有限公司 | Starch plastic composition and preparation method and application thereof |
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Open date: 20100106 |