CN103571175A - Degradable TPU (thermoplastic polyurethane) mulch - Google Patents
Degradable TPU (thermoplastic polyurethane) mulch Download PDFInfo
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- CN103571175A CN103571175A CN201310470819.XA CN201310470819A CN103571175A CN 103571175 A CN103571175 A CN 103571175A CN 201310470819 A CN201310470819 A CN 201310470819A CN 103571175 A CN103571175 A CN 103571175A
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Abstract
The invention discloses a TPU (thermoplastic polyurethane) mulch which can be completely degraded. The TPU mulch comprises the following components in parts by mass: 40-80 parts of TPU particles, 0.05-2 parts of antioxidant, 0.05-3 parts of ultraviolet light absorber, 0.5-50 parts of calcium carbonate, 0.5-20 parts of diatomite, 0-2 parts of calcium stearate, 0-1.8 parts of stearic acid and 0-0.5 part of black colour masterbatch. The TPU mulch effectively overcomes the defect that the traditional PE (polyethylene) mulch can not be degraded and also solves the problem that a biological degradable mulch can not be completely degraded. The TPU mulch can guarantee physical properties while extremely low thickness is realized, so that production cost is effectively reduced.
Description
Technical field
The present invention relates to agricultural mulching, be specifically related to a kind of TPU mulch film that can be degradable and preparation method thereof.
Background technology
Arid Problem is a problem extremely severe in China's agriculture production.In agriculture production, membrane covering not only can keep soil moisture, improve efficiency of water application, and can improve the growing environment of farm crop, improves output and the agriculture benefit of farm crop, be one of effective way of world food and cash crop volume increase, therefore application is very extensive.According to statistics, agricultural mulching annual consumption reaches 1,600,000 tons now.Yet, traditional agricultural PE mulch film non-degradable, discarded plastic row high-volume at least reaches more than 1,000 ten thousand tons.Film-mulching technique when bringing great economic benefit to agricultural production and income, also severe contamination soil.Discarded mulch film is cumulative last formation barrier layer in soil, reduces the ventilation property of soil, and deteriorated soil, causes serious " white pollution ".Long-run development is gone down, and film-mulching technique will play negative effect to agriculture development.Therefore, it is very necessary developing degradable agricultural mulching, is also very significant.
At present, the research work of extensively carrying out both at home and abroad, is mainly to have Biodegradable mulch, photodegradation film, light/Biodegradable mulch, plant fiber mulch, liquid film, the Multifunctional agricultural thin film etc. of spraying.What domestic research and development were more is the two degradative plastic films of Biodegradable mulch, photodegradation film and light/life.Yet the cost of these mulch films is high, the thickness of film can not be too thin, the performances such as its high water-repellancy, water vapour permeability, windproof, cold-proof, warming, uvioresistant and energy release are low, degrade also incomplete, the fragment remaining in soil can not, by soil microbial degradation, can not be absorbed by farm crop.
Summary of the invention
The object of the invention is to: for the above-mentioned defect of prior art, provide a kind of TPU mulch film that can be degradable.When this TPU mulch film can guarantee physicals, reach very thin thickness, effectively reduce costs.
Technical scheme provided by the invention is as follows:
A kind of TPU mulch film that can be degradable is provided, in mass parts, consists of:
TPU particle 40-80 part
Antioxidant 0.05-2 part
UV light absorber 0.05-3 part
Calcium carbonate 0.5-50 part
Diatomite 0.5-20 part
Calcium stearate 0-2 part
Stearic acid 0-1.8 part
Black look female 0-0.5 part
Component and the part by weight umber of the above-mentioned TPU mulch film of TPU mulch film described in forming that can be degradable are preferred:
70 parts of TPU particles
0.3 part of antioxidant
0.5 part of UV light absorber
28 parts, calcium carbonate
0.5 part of calcium stearate
0.5 part of stearic acid
0.2 part of black look female
Calcium carbonate particle diameter 0.02 μ m-5 μ m described in above-mentioned TPU mulch film that can be degradable.
The thickness of above-mentioned TPU mulch film that can be degradable can be selected between 0.001-10mm.
Above-mentioned TPU mulch film that can be degradable can one side brushing weedicide.
The preparation method of above-mentioned TPU mulch film that can be degradable, comprises the following steps:
1) according to proportioning, take each component, mix;
2) the dry 3-5 hour of material in dehumidifying heat pump, step 1) being mixed, drying temperature is 80-90 ℃, then through feed system, delivers in casting machine and extrude.Wherein, each zone temperatures of casting machine arranges as follows: barrel temperature is 150-200 ℃, filter screen temperature 170-190 ℃, die head temperature 170-200 ℃;
3) be pressed into the film thickness of requirement, through drawing, get wheel, introduce cooling section, be cooled to normal temperature, with surface reel, divide and be rolled into quantitative finished product.
Tool of the present invention has the following advantages:
As everyone knows, TPU material has that intensity is high, good toughness, the feature such as wear-resisting, cold-resistant, ageing-resistant, also has the function of many excellences such as high water-repellancy, water vapour permeability, windproof, cold-proof, warming, uvioresistant and energy release simultaneously.TPU film is a kind of important application form of TPU material.TPU film product molecular structure simple (only containing C, H, O, N), without atmospheric pollution, is embedded in soil because of being subject to humidity and microbial process the interior natural decomposition of 3-5 while incinerating burning.
The invention provides a kind of TPU mulch film that can be degradable, effectively overcome the shortcoming that conventional P E mulch film can not be degraded, also overcome simultaneously Biodegradable mulch can not be degradable problem.When this TPU mulch film can guarantee physicals, reach very thin thickness, effectively reduced production cost.
Embodiment
A kind of TPU mulch film that can be degradable is provided, in mass parts, consists of:
TPU particle 40-80 part
Antioxidant 0.05-2 part
UV light absorber 0.05-3 part
Calcium carbonate 0.5-50 part
Diatomite 0.5-20 part
Calcium stearate 0-2 part
Stearic acid 0-1.8 part
Black look female 0-0.5 part
Component and the part by weight umber of the above-mentioned TPU mulch film of TPU mulch film described in forming that can be degradable are preferred:
70 parts of TPU particles
0.3 part of antioxidant
0.5 part of UV light absorber
28 parts, calcium carbonate
0.5 part of calcium stearate
0.5 part of stearic acid
0.2 part of black look female
Calcium carbonate particle diameter 0.02 μ m-5 μ m described in above-mentioned TPU mulch film that can be degradable.
The thickness of above-mentioned TPU mulch film that can be degradable can be selected between 0.001-10mm.
Above-mentioned TPU mulch film that can be degradable can one side brushing weedicide.
The preparation method of above-mentioned TPU mulch film that can be degradable, comprises the following steps:
1) according to proportioning, take each component, mix;
2) the dry 3-5 hour of material in dehumidifying heat pump, step 1) being mixed, drying temperature is 80-90 ℃, then through feed system, delivers in casting machine and extrude.Wherein, each zone temperatures of casting machine arranges as follows: barrel temperature is 150-200 ℃, filter screen temperature 170-190 ℃, die head temperature 170-200 ℃;
3) be pressed into the film thickness of requirement, through drawing, get wheel, introduce cooling section, be cooled to normal temperature, with surface reel, divide and be rolled into quantitative finished product.
Claims (6)
1. a TPU mulch film that can be degradable, in mass parts, consists of:
TPU particle 40-80 part
Antioxidant 0.05-2 part
UV light absorber 0.05-3 part
Calcium carbonate 0.5-50 part
Diatomite 0.5-20 part
Calcium stearate 0-2 part
Stearic acid 0-1.8 part
Black look female 0-0.5 part.
2. TPU mulch film that can be degradable according to claim 1, is characterized in that: component and the part by weight umber of described TPU mulch film are preferred:
70 parts of TPU particles
0.3 part of antioxidant
0.5 part of UV light absorber
28 parts, calcium carbonate
0.5 part of calcium stearate
0.5 part of stearic acid
0.2 part of black look female.
3. TPU mulch film that can be degradable according to claim 1 and 2, is characterized in that: described calcium carbonate particle diameter 0.02 μ m-5 μ m.
4. according to claim 1 can degradable TPU mulch film, it is characterized in that: the thickness of described degradable TPU mulch film can be selected between 0.001-10mm.
5. according to claim 1 can degradable TPU mulch film, it is characterized in that: described degradable TPU mulch film can one side brushing weedicide.
6. preparation method that can degradable TPU mulch film according to claim 1, comprises the following steps:
1) according to proportioning, take each component, mix;
2) the dry 3-5 hour of material in dehumidifying heat pump, step 1) being mixed, drying temperature is 80-90 ℃, then through feed system, delivers in casting machine and extrude;
Wherein, each zone temperatures of casting machine arranges as follows: barrel temperature is 150-200 ℃, filter screen temperature 170-190 ℃, die head temperature 170-200 ℃;
3) be pressed into the film thickness of requirement, through drawing, get wheel, introduce cooling section, be cooled to normal temperature, with surface reel, divide and be rolled into quantitative finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310470819.XA CN103571175A (en) | 2013-10-11 | 2013-10-11 | Degradable TPU (thermoplastic polyurethane) mulch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310470819.XA CN103571175A (en) | 2013-10-11 | 2013-10-11 | Degradable TPU (thermoplastic polyurethane) mulch |
Publications (1)
| Publication Number | Publication Date |
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| CN103571175A true CN103571175A (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310470819.XA Pending CN103571175A (en) | 2013-10-11 | 2013-10-11 | Degradable TPU (thermoplastic polyurethane) mulch |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105104036A (en) * | 2015-07-22 | 2015-12-02 | 苏州市雄林新材料科技有限公司 | TPU thin film with controllable degradation time and preparation method thereof |
| CN105274863A (en) * | 2015-09-16 | 2016-01-27 | 广州钰鑫环保塑胶有限公司 | Solvent-free environmentally friendly TPU artificial leather and preparation method |
| CN111844829A (en) * | 2020-07-28 | 2020-10-30 | 昆山红苹果塑胶新材料有限公司 | Method for manufacturing black shading film |
| CN115975391A (en) * | 2022-11-21 | 2023-04-18 | 广东人参果农业科技有限公司 | Mulching film special for ginseng fruits |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1226266A (en) * | 1996-07-26 | 1999-08-18 | 沃尔夫瓦尔斯罗德有限公司 | Monoaxially stretched, biodegradable and compostable foil with improved properties |
| US5961906A (en) * | 1995-05-11 | 1999-10-05 | Bayer Aktiengesellschaft | Biodegradable and compostable plastic articles, including flat-shaped articles |
| CN102964808A (en) * | 2012-12-04 | 2013-03-13 | 福建思嘉环保材料科技有限公司 | Environment-friendly thermoplastic polyurethane (TPU) film and preparation method thereof |
-
2013
- 2013-10-11 CN CN201310470819.XA patent/CN103571175A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5961906A (en) * | 1995-05-11 | 1999-10-05 | Bayer Aktiengesellschaft | Biodegradable and compostable plastic articles, including flat-shaped articles |
| CN1226266A (en) * | 1996-07-26 | 1999-08-18 | 沃尔夫瓦尔斯罗德有限公司 | Monoaxially stretched, biodegradable and compostable foil with improved properties |
| CN102964808A (en) * | 2012-12-04 | 2013-03-13 | 福建思嘉环保材料科技有限公司 | Environment-friendly thermoplastic polyurethane (TPU) film and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105104036A (en) * | 2015-07-22 | 2015-12-02 | 苏州市雄林新材料科技有限公司 | TPU thin film with controllable degradation time and preparation method thereof |
| CN105274863A (en) * | 2015-09-16 | 2016-01-27 | 广州钰鑫环保塑胶有限公司 | Solvent-free environmentally friendly TPU artificial leather and preparation method |
| CN111844829A (en) * | 2020-07-28 | 2020-10-30 | 昆山红苹果塑胶新材料有限公司 | Method for manufacturing black shading film |
| CN115975391A (en) * | 2022-11-21 | 2023-04-18 | 广东人参果农业科技有限公司 | Mulching film special for ginseng fruits |
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Address after: 523000 Guangdong city in Dongguan Province town of Kau Ya Village Industrial Zone Applicant after: Dongguan Xionglin New Material Technology Co., Ltd. Address before: 523000 Guangdong city in Dongguan Province town of Kau Ya Village Industrial Zone Applicant before: Dongguan Xionglin New Material Technology Co., Ltd. |
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Application publication date: 20140212 |