CN101831152B - Thermoplastic completely biodegradable plastic - Google Patents
Thermoplastic completely biodegradable plastic Download PDFInfo
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- CN101831152B CN101831152B CN2010101535710A CN201010153571A CN101831152B CN 101831152 B CN101831152 B CN 101831152B CN 2010101535710 A CN2010101535710 A CN 2010101535710A CN 201010153571 A CN201010153571 A CN 201010153571A CN 101831152 B CN101831152 B CN 101831152B
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- biodegradable plastic
- modified starch
- coupling agent
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- 229920000704 biodegradable plastic Polymers 0.000 title claims abstract description 31
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 26
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 48
- 239000000843 powder Substances 0.000 claims abstract description 32
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 229920000881 Modified starch Polymers 0.000 claims abstract description 25
- 235000019426 modified starch Nutrition 0.000 claims abstract description 25
- 239000004368 Modified starch Substances 0.000 claims abstract description 22
- 229920001661 Chitosan Polymers 0.000 claims abstract description 15
- 239000010985 leather Substances 0.000 claims abstract description 14
- 239000007822 coupling agent Substances 0.000 claims abstract description 13
- 239000002023 wood Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 10
- 229920001610 polycaprolactone Polymers 0.000 claims description 9
- 239000004632 polycaprolactone Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000001404 mediated effect Effects 0.000 claims description 5
- 238000005453 pelletization Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- 239000004716 Ethylene/acrylic acid copolymer Substances 0.000 claims description 3
- 239000002953 phosphate buffered saline Substances 0.000 claims description 3
- 125000003917 carbamoyl group Chemical class [H]N([H])C(*)=O 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000006731 degradation reaction Methods 0.000 abstract description 5
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 238000003490 calendering Methods 0.000 abstract description 3
- 229920002472 Starch Polymers 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 235000019698 starch Nutrition 0.000 abstract description 2
- 239000008107 starch Substances 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract 1
- 229920006226 ethylene-acrylic acid Polymers 0.000 description 9
- 150000003857 carboxamides Chemical class 0.000 description 7
- 239000004626 polylactic acid Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920002101 Chitin Polymers 0.000 description 2
- 241000219000 Populus Species 0.000 description 2
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000003413 degradative effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000158728 Meliaceae Species 0.000 description 1
- 241000124033 Salix Species 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- MBLBDJOUHNCFQT-LXGUWJNJSA-N aldehydo-N-acetyl-D-glucosamine Chemical compound CC(=O)N[C@@H](C=O)[C@@H](O)[C@H](O)[C@H](O)CO MBLBDJOUHNCFQT-LXGUWJNJSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229920006238 degradable plastic Polymers 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- -1 poly butylene succinate Polymers 0.000 description 1
- 239000004631 polybutylene succinate Substances 0.000 description 1
- 229920002961 polybutylene succinate Polymers 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 235000011888 snacks Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A thermoplastic completely biodegradable plastic is composed of 35-45 parts of PBS, 35-45 parts of modified starch, 5-6 parts of EAA, 4-5 parts of leather powder, 5-7 parts of wood powder, 23 parts of chitosan and 2-3 parts of composite coupling agent, and the preparation method comprises the following steps: mixing the modified starch, the PBS, the EAA, the leather powder, the wood powder, the chitosan and the composite coupling agent by using a high-speed mixer, taking out and cooling, then sending into a kneader to knead for 25-35 minutes, sending the kneaded mixture into a double-screw extruder to melt and granulate, and thus obtaining the thermoplastic completely biodegradable plastic. The invention has simple production process, uses a large amount of starch in the raw materials, saves petroleum resources and has low production cost; the degradation rate reaches more than 68% in 100 days, and white pollution is prevented; the thermoplastic completely biodegradable plastic has good processability, and can be used for injection molding, blown film production and calendered film production.
Description
Technical field
The present invention relates to a kind of degradative plastics, specifically a kind of thermoplastic fully biodegradable plastic.
Background technology
In order to alleviate the petrochemicals contradiction that demand exceeds supply, elimination " white pollution ", our country successfully works out the working method of multiple complete biodegradable plastics.More than ten kinds such as poly-lactic acid ester (PLA), PVA, PVB are wherein arranged.Like the poly-lactic acid ester complete biodegradable plastics be: with the W-Gum saccharification, process high density lactic acid, process POLYACTIC ACID then.The one, complex process, production cost are higher; The 2nd, PLA can not with PE, PP congruent melting, the reclaiming material is difficult, has limited use range; The PVA complete biodegradable plastics, water-fast film-forming properties is poor, and the PVB completely degradable plastic is the PVA aqueous solution to be added aldehyde material be reacted into prepolymer, forms through atomization drying then, thereby has changed the water tolerance of PVB complete biodegradable plastics.But at present because domestic this kind drying plant does not also reach technical requirements, not large-scale production so far.Other complete biodegradable plastics can only be used for injection moulding, disposable snack box, can not produce the film article of all size.
Summary of the invention
Technical problem to be solved by this invention provides a kind of thermoplastic fully biodegradable plastic, has the degradation rate height, and production technique is simple, production cost is low, can injection moulding again can blowing, the advantage of calendered film.
The deficiency that the present invention solves the problems of the technologies described above; The technical scheme that is adopted is: a kind of thermoplastic fully biodegradable plastic; Be made up of PBS, modified starch, EAA, leather powder, wood powder, chitosan and composite coupler, wherein each raw materials in part by weight and additional proportion are: PBS 35-45 part, modified starch 35-45 part, EAA 5-6 part, leather powder 4-5 part, wood powder 5-7 part, chitosan 2-3 part, composite coupler 2-3 part.
Described modified starch is made up of W-Gum, composite coupler, USP Kosher, carboxamide and polycaprolactone, and wherein each raw materials in part by weight and additional proportion are: W-Gum 60-65%, composite coupler 2-3%, USP Kosher 16-20%, carboxamide 6-8%, polycaprolactone 8-12%.
Described modified starch, its water ratio is less than 12%.
Described composite coupler is made up of silane coupling agent, white oil and titanate coupling agent, and its parts by weight and additional proportion are silane coupling agent 1-2%, white oil 45-52% and titanate coupling agent 46-54%.
The present invention, a kind of preparation method of thermoplastic fully biodegradable plastic comprises the steps:
(1), modified starch is joined in the high-speed mixer, start high-speed mixer, it is heated with 250-300 rev/min rotation speed operation and to the material in the high-speed mixer;
(2), in the high-speed mixer operation process, add composite coupler, treat to add EAA when the mixture temperature rises to 75-85 ℃ in the high-speed mixer, add PBS, leather powder, wood powder and chitosan when continuing to be mixed to 100-110 ℃ of mixture temperature; When continuing to be mixed to the mixture temperature recovery to 105-115 ℃, the rotating speed of adjustment mixing machine is to 700-800 rev/min, during material to be mixed temperature rise to 120 ℃; Stop to mix; Mixture is taken out, leave standstill cooling 24 hours, subsequent use;
(3), the cooled mixture of step (2) is sent into kneader, start running and to the mixture heating, the mixture temperature rises to 100-110 ℃ of continued and mediated 25-35 minute, mediates the back and takes out mixture, and is subsequent use;
(4), the mixture of step (3) after mediating send into twin screw extruder, melt pelletization under 135-165 ℃ temperature is promptly processed thermoplastic fully biodegradable plastic.
The invention has the beneficial effects as follows: 1, production technique is simple, and a large amount of starch that use have been practiced thrift petroleum resources in raw material, and two tons of thermoplastic fully biodegradable plastics of every production can be practiced thrift one ton of oil, and production cost is low; 2, the goods of thermoplastic fully biodegradable plastic production of the present invention use discarded back self degraded, and degradation rate reached more than 68% in 100 days, had surpassed national standard, can purify social environment, and prevented " white pollution "; 3, thermoplastic fully biodegradable plastic processibility of the present invention is good, both can be used for injection moulding, can be used to produce blown film and calendered film again.
Embodiment
A kind of thermoplastic fully biodegradable plastic; Be made up of PBS, modified starch, EAA, leather powder, wood powder, chitosan and composite coupler, wherein each raw materials in part by weight and additional proportion are: PBS 35-45 part, modified starch 35-45 part, EAA 5-6 part, leather powder 4-5 part, wood powder 5-7 part, chitosan 2-3 part, composite coupler 2-3 part.
Described modified starch is made up of 60-65% W-Gum, 2-3% composite coupler, 16-20% USP Kosher, 6-8% carboxamide and 8-12% polycaprolactone.Its preparation method is: according to aforementioned proportion, 120 purpose W-Gums are joined in the high-speed mixer, start mixing machine with 300 rev/mins rotation speed operation; To the W-Gum water ratio less than 12% o'clock, add composite coupler; Continue to be mixed to when mixture temperature is 80 ℃ in the mixing machine, add USP Kosher; Continue to be mixed to when mixture temperature is 100 ℃ in the mixing machine, add carboxamide and polycaprolactone; When continuing to be mixed to mixture temperature and being 110 ℃, adjustment mixing machine rotating speed to 800 rev/min; When continuing to be mixed to mixture temperature and being 120 ℃, close mixing machine, take out compound, leave standstill cooling 12 hours, promptly make modified starch.
Described modified starch, its water ratio is less than 12%.
The used composite coupler of preparation degradative plastics is with to prepare the composite coupler that modified starch uses identical; Described composite coupler is made up of silane coupling agent, white oil and titanate coupling agent, and its parts by weight and additional proportion are silane coupling agent 1-2%, white oil 45-52% and titanate coupling agent 46-54%.Its compound method is: according to above-mentioned ratio of weight and number, silane coupling agent is joined in the white oil, stir, process the liquid material, with the titanate coupling agent uniform mixing, promptly become composite coupler then.Raw material can be selected silane 550 and titanate coupling agent A150 for use.
Described chitosan, its preparation method is: with shrimp shell or crab shell is raw material, makes chitin earlier, using pH value then is 14 concentrated base, under 80 ℃ condition, makes the part of chitin remove ethanoyl, obtains to remove the chitosan product of ethanoyl more than 80%.Its molecular weight is 3 * 10
5
Described leather powder, according to weight proportion, its protein contnt is more than 50%, its fineness is the 80-100 order.
Described wood powder can be selected pure poplar powder, elm powder, willow powder or mahogany powder for use, and its fineness is the 100-300 order.
Described EAA, promptly ethylene acrylic acid co polymer adopts U.S. import 1420-1 product.
Described PBS, promptly poly butylene succinate is a kind of commercially available biological degradation plastics.Illustrate present technique scheme (the following umber of getting is parts by weight):
Embodiment 1
A kind of preparation method of thermoplastic fully biodegradable plastic comprises the steps:
(1), 40 portions of modified starches are joined in the high-speed mixer, start high-speed mixer, it is heated with 250 rev/mins rotation speed operation and to the material in the high-speed mixer;
(2), in the high-speed mixer operation process, add 2 parts of composite couplers, treat to add 5 parts of EAA when the mixture temperature rises to 75 ℃ in the high-speed mixer, add 39 parts of PBS, 4 parts of leather powder, 7 parts of wood powders and 3 parts of chitosans when continuing to be mixed to 100 ℃ of mixture temperature; When continuing to be mixed to mixture temperature recovery to 105 ℃, the rotating speed to 700 of adjustment mixing machine rev/min is during material to be mixed temperature rise to 120 ℃; Stop to mix; Mixture is taken out, leave standstill cooling 24 hours, subsequent use;
(3), the cooled mixture of step (2) is sent into kneader, start running and to the mixture heating, the mixture temperature rises to 100 ℃ of continued and mediated 25 minutes, mediates the back and takes out mixture, and is subsequent use;
(4), the mixture of step (3) after mediating send into twin screw extruder, melt pelletization under 135 ℃ temperature is promptly processed thermoplastic fully biodegradable plastic.
Wherein, described modified starch is processed by 63% W-Gum, 2% composite coupler, 18% USP Kosher, 7% carboxamide and 10% polycaprolactone.
Described composite coupler is made up of 1% silane coupling agent, 49% white oil and 50% titanate coupling agent.
Embodiment 2
A kind of preparation method of thermoplastic fully biodegradable plastic comprises the steps:
(1), 45 portions of modified starches are joined in the high-speed mixer, start high-speed mixer, it is heated with 300 rev/mins rotation speed operation and to the material in the high-speed mixer;
(2), in the high-speed mixer operation process, add 2 parts of composite couplers, treat to add 6 parts of EAA when the mixture temperature rises to 80 ℃ in the high-speed mixer, add 35 parts of PBS, 5 parts of leather powder, 5 parts of poplar powder and 2 parts of chitosans when continuing to be mixed to 110 ℃ of material temperature; When continuing to be mixed to mixture temperature recovery to 110 ℃, the rotating speed to 800 of adjustment mixing machine rev/min is during material to be mixed temperature rise to 120 ℃; Stop to mix; Mixture is taken out, leave standstill cooling 24 hours, subsequent use;
(3), the cooled mixture of step (2) is sent into kneader, start running and to the mixture heating, the mixture temperature rises to 110 ℃ of continued and mediated 30 minutes, mediates the back and takes out mixture, and is subsequent use;
(4), the mixture of step (3) after mediating send into twin screw extruder, melt pelletization under 150 ℃ temperature is promptly processed thermoplastic fully biodegradable plastic.
Wherein, described modified starch is processed by 60% W-Gum, 2% composite coupler, 20% USP Kosher, 6% carboxamide and 12% polycaprolactone.
Described composite coupler is made up of 2% silane coupling agent, 52% white oil and 46% titanate coupling agent.
Embodiment 3
A kind of preparation method of thermoplastic fully biodegradable plastic comprises the steps:
(1), 35 portions of modified starches are joined in the high-speed mixer, start high-speed mixer, it is heated with 280 rev/mins rotation speed operation and to the material in the high-speed mixer;
(2), in the high-speed mixer operation process, the modified starch water ratio is reduced to 12% and is added 3 parts of composite couplers when following, treats to add when the mixture temperature rises to 85 ℃ in the high-speed mixer 5 parts of EAA; Continue to be mixed to and add 45 parts of PBS, 4 parts of leather powder, 6 parts of wood powders and 2 parts of chitosans when expecting warm 105 ℃; When continuing to be mixed to mixture temperature recovery to 115 ℃, the rotating speed to 750 of adjustment mixing machine rev/min is during material to be mixed temperature rise to 120 ℃; Stop to mix; Mixture is taken out, leave standstill cooling 24 hours, subsequent use;
(3), the cooled mixture of step (2) is sent into kneader, start running and to the mixture heating, the mixture temperature rises to 105 ℃ of continued and mediated 28 minutes, closes kneader after the kneading, takes out mixture, and is subsequent use;
(4), the mixture of step (3) after mediating send into twin screw extruder, melt pelletization under 165 ℃ temperature is promptly processed thermoplastic fully biodegradable plastic.
Wherein, described modified starch is processed by 65% W-Gum, 3% composite coupler, 16% USP Kosher, 8% carboxamide and 8% polycaprolactone.
Described composite coupler is made up of 1% silane coupling agent, 45% white oil and 54% titanate coupling agent.
The thermoplastic fully biodegradable plastic degradation rate that uses the present technique scheme to process is high, can effectively reduce white pollution, helps environment protection.
Claims (4)
1. thermoplastic fully biodegradable plastic; It is characterized in that: be made up of PBS, modified starch, EAA, leather powder, wood powder, chitosan and composite coupler, wherein each raw materials in part by weight and additional proportion are: PBS 35-45 part, modified starch 35-45 part, EAA 5-6 part, leather powder 4-5 part, wood powder 5-7 part, chitosan 2-3 part, composite coupler 2-3 part;
Described modified starch is made up of W-Gum, composite coupler, USP Kosher, carboxamide and polycaprolactone, and wherein each raw materials in part by weight and additional proportion are: W-Gum 60-65%, composite coupler 2-3%, USP Kosher 16-20%, carboxamide 6-8%, polycaprolactone 8-12%.
2. a kind of thermoplastic fully biodegradable plastic as claimed in claim 1 is characterized in that: described modified starch, its water ratio is less than 12%.
3. a kind of thermoplastic fully biodegradable plastic as claimed in claim 1; It is characterized in that: described composite coupler is made up of silane coupling agent, white oil and titanate coupling agent, and its parts by weight and additional proportion are silane coupling agent 1-2%, white oil 45-52% and titanate coupling agent 46-54%.
4. the preparation method of a kind of thermoplastic fully biodegradable plastic as claimed in claim 1 is characterized in that: comprise the steps:
(1), modified starch is joined in the high-speed mixer, start high-speed mixer, it is heated with 250-300 rev/min rotation speed operation and to the material in the high-speed mixer;
(2) in the high-speed mixer operation process, add composite coupler, treat to add EAA when the mixture temperature rises to 75-85 ℃ in the high-speed mixer, add PBS, leather powder, wood powder and chitosan when continuing to be mixed to 100-110 ℃ of mixture temperature; When continuing to be mixed to the mixture temperature recovery to 105-115 ℃, the rotating speed of adjustment mixing machine is to 700-800 rev/min, during material to be mixed temperature rise to 120 ℃; Stop to mix; Mixture is taken out, leave standstill cooling 24 hours, subsequent use;
(3), the cooled mixture of step (2) is sent into kneader, start running and to the mixture heating, the mixture temperature rises to 100-110 ℃ of continued and mediated 25-35 minute, mediates the back and takes out mixture, and is subsequent use;
(4), the mixture of step (3) after mediating send into twin screw extruder, melt pelletization under 135-165 ℃ temperature is promptly processed thermoplastic fully biodegradable plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101535710A CN101831152B (en) | 2010-04-23 | 2010-04-23 | Thermoplastic completely biodegradable plastic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101535710A CN101831152B (en) | 2010-04-23 | 2010-04-23 | Thermoplastic completely biodegradable plastic |
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| Publication Number | Publication Date |
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| CN101831152A CN101831152A (en) | 2010-09-15 |
| CN101831152B true CN101831152B (en) | 2012-05-02 |
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| CN2010101535710A Expired - Fee Related CN101831152B (en) | 2010-04-23 | 2010-04-23 | Thermoplastic completely biodegradable plastic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924885A (en) * | 2012-11-23 | 2013-02-13 | 宁夏青林盛华科技有限公司 | Nano cyclic phenyl hydroxide modified starch/PBS biology base degradation dedicated material and preparation method thereof |
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| CN104530487A (en) * | 2014-12-23 | 2015-04-22 | 江苏省农业科学院 | Full-degradable particles and preparation method thereof |
| CN104497511B (en) * | 2014-12-28 | 2016-04-27 | 张小芳 | The preparation method of modification polycaprolactone biodegradable plastic |
| CN104774347A (en) * | 2015-04-17 | 2015-07-15 | 柳州市乾阳机电设备有限公司 | Preparation method of biodegradable plastic |
| CN104788922A (en) * | 2015-04-17 | 2015-07-22 | 柳州市乾阳机电设备有限公司 | Degradable plastic |
| CN104774438A (en) * | 2015-04-17 | 2015-07-15 | 柳州市乾阳机电设备有限公司 | Preparation method of degradable plastic |
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| CN110183829A (en) * | 2019-06-11 | 2019-08-30 | 陕西科技大学 | A kind of discarded skin powder and complete biodegradable groundmass composite material and preparation method thereof |
| CN111363207A (en) * | 2020-05-14 | 2020-07-03 | 深圳市通产丽星科技集团有限公司 | Environment-friendly plasticizing system, thermoplastic chitosan material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040260318A1 (en) * | 2003-05-23 | 2004-12-23 | Angiotech International Ag | Anastomotic connector devices |
| AU2007253694A1 (en) * | 2006-05-19 | 2007-11-29 | The Scripps Research Institute | Treatment of protein misfolding |
| CN101284922A (en) * | 2008-05-20 | 2008-10-15 | 安徽德琳环保发展（集团）有限公司 | Biological degradation plastic with high starch content for blowing molding and method for preparing same |
| CN101323678A (en) * | 2008-07-30 | 2008-12-17 | 石家庄普莱斯环保材料科技有限公司 | Full biological degradable plastic film |
| CN101591467A (en) * | 2009-06-24 | 2009-12-02 | 西安工业大学 | A kind of polylactic wood/plastic composite material and preparation method thereof |
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2010
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924885A (en) * | 2012-11-23 | 2013-02-13 | 宁夏青林盛华科技有限公司 | Nano cyclic phenyl hydroxide modified starch/PBS biology base degradation dedicated material and preparation method thereof |
| CN102924885B (en) * | 2012-11-23 | 2015-01-21 | 宁夏青林盛华科技有限公司 | Nano cyclic phenyl hydroxide modified starch/PBS biology base degradation dedicated material and preparation method thereof |
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| CN101831152A (en) | 2010-09-15 |
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