CN102329435B - Composite fully degradable agricultural mulching film material and preparation process thereof - Google Patents
Composite fully degradable agricultural mulching film material and preparation process thereof Download PDFInfo
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- CN102329435B CN102329435B CN201110207079.1A CN201110207079A CN102329435B CN 102329435 B CN102329435 B CN 102329435B CN 201110207079 A CN201110207079 A CN 201110207079A CN 102329435 B CN102329435 B CN 102329435B
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Abstract
The invention discloses a composite fully degradable agricultural mulching film material and a preparation process thereof. The material is characterized by comprising the following components in parts by weight: 55-65 parts of corn starch, 15-25 parts of polyvinyl alcohol, 13-18 parts of glycerin, 2-4 parts of urea and 1-3 parts of organo-montmorillonite. The material disclosed by the invention has good dispersibility, maintains the original longitudinal and lateral tension properties, and has good promotion value.
Description
Technical field
The present invention relates to agricultural mulching technical field, relate in particular the compound fully degraded agricultural mulching film material of a kind of starch/PVA.
Background technology
Polyvinyl alcohol (PVA), is important industrial chemicals, for the manufacture of polyvinyl acetal, resistance to gasoline pipeline and vinylon synthon, fabric-treating agent, emulsifying agent, paper coating, tackiness agent etc.In this year, research finds take starch, polyvinyl alcohol as basic raw material, and formaldehyde is linking agent, and glycerine is softening agent, can prepare polyvinyl alcohol-starch biodegradation mould material with teeming practice after PVC hydrophobization processing.But proportioning raw materials, hydrophobization processing have important impact to film properties.Starch content increases, and has improved biodegradability and the elongation of material, but tensile strength declines; Hydrophobization is processed and has obviously been improved wet tenacity, soaks and within 16 days, still have higher intensity (untreated film is soaked and within several minutes, just lost intensity completely in water) in water; With PE film contrast, better mechanical property, transmittance, heat retaining property are suitable, and oxygen transmission rate is lower slightly, owing to having good water absorbability, forms fine mist, thereby improved preventing disease and pest function in film.For this reason, how to develop a kind of degradable agricultural mulching film material and become the problem that people are worth discussion.
Summary of the invention
Object of the present invention is exactly the deficiency in order to solve prior art and the not only favorable dispersity of one that provides, and vertical lateral pull keeps original performance, and the compound fully degraded agricultural mulching film material of environmental protection.
Another object of the present invention is to provide a kind of preparation technology of compound fully degraded agricultural mulching film material.
The present invention adopts following technical solution to realize above-mentioned purpose: a kind of compound fully degraded agricultural mulching film material, it is characterized in that, and its component and part by weight umber ratio comprise:
W-Gum 55-65 part
Polyvinyl alcohol 15-25 part
Glycerine 13-18 part
Urea 2-4 part
Organo montmorillonite 1-3 part.
As further illustrating of such scheme: the component of described agricultural mulching film material and part by weight umber are preferred:
60 parts of W-Gums
20 parts of polyvinyl alcohol
15 parts of glycerine
3 parts, urea
2 parts of organo montmorillonites.
A preparation technology for compound fully degraded agricultural mulching film material, is characterized in that, it comprises the steps:
A, first by W-Gum at horizontal high-speed mixing machine, heating middling speed mix 25-35 minute;
B, add polyvinyl alcohol, high-speed mixing 10-20 minute;
C, the mass transport mixing arrive screw discharging kneader;
D, glycerol adding and urea are entered, the mixing plasticizing of high speed;
E, add organo montmorillonite;
F, extruding pelletization;
G, finished product packing.
In described processing step a process, described mixed powder water content <2%, heating middling speed is mixed 30 minutes.
In the high-speed mixing process of described processing step b, high-speed mixing 15 minutes.
The beneficial effect that the present invention adopts above-mentioned technical solution to reach is:
1, matrix material of the present invention, on blown film machine, by original LDPE production technique, is completely normally produced.
2, favorable dispersity, vertical lateral pull keeps original performance.
3, reach environment-friendly function.
Embodiment
A kind of compound fully degraded agricultural mulching film material of the present invention, its component and part by weight umber ratio comprise:
W-Gum 55-65 part
Polyvinyl alcohol 15-25 part
Glycerine 13-18 part
Urea 2-4 part
Organo montmorillonite 1-3 part.
The present embodiment is preferred, 60 parts of W-Gums
20 parts of polyvinyl alcohol
15 parts of glycerine
3 parts, urea
2 parts of organo montmorillonites.
The preparation technology of compound fully degraded agricultural mulching film material, its processing step is as follows:
1, first by W-Gum at horizontal high-speed mixing machine, heating middling speed mix 30 minutes, reach combination drying effect, water content <2%.
2, add polyvinyl alcohol, high-speed mixing 10 minutes, each component distributes and mixes.
3, the mass transport mixing is to screw discharging kneader.
4, glycerol adding and urea are entered, the mixing plasticizing of high speed.
5, add organo montmorillonite, toughening modifying.
6, extruding pelletization.
7, finished product packing.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (1)
1. a preparation method for compound fully degraded agricultural mulching film material, is characterized in that, it comprises the steps:
A, by weight proportion umber first by W-Gum 55-65 part at horizontal high-speed mixing machine, heating middling speed mix 25-35 minute;
B, add polyvinyl alcohol 15-25 part, high-speed mixing 10-20 minute;
C, the mass transport mixing arrive screw discharging kneader;
D, glycerol adding 13-18 part and urea 2-4 part are entered, the mixing plasticizing of high speed;
E, add organo montmorillonite 1-3 part;
F, extruding pelletization;
G, finished product packing.
2
.the preparation method of a kind of compound fully degraded agricultural mulching film material according to claim 1, is characterized in that, in described processing step a process, described mixed powder heating middling speed is mixed 30 minutes.
3
.the preparation method of a kind of compound fully degraded agricultural mulching film material according to claim 2, is characterized in that, in the high-speed mixing process of described processing step b, and high-speed mixing 15 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110207079.1A CN102329435B (en) | 2011-07-23 | 2011-07-23 | Composite fully degradable agricultural mulching film material and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110207079.1A CN102329435B (en) | 2011-07-23 | 2011-07-23 | Composite fully degradable agricultural mulching film material and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102329435A CN102329435A (en) | 2012-01-25 |
| CN102329435B true CN102329435B (en) | 2014-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110207079.1A Expired - Fee Related CN102329435B (en) | 2011-07-23 | 2011-07-23 | Composite fully degradable agricultural mulching film material and preparation process thereof |
Country Status (1)
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| CN (1) | CN102329435B (en) |
Families Citing this family (17)
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| CN104892990A (en) * | 2015-04-24 | 2015-09-09 | 安徽颍美彩印包装有限公司 | Anti-static full degradable film and preparation method thereof |
| CN104893198A (en) * | 2015-04-24 | 2015-09-09 | 安徽颍美彩印包装有限公司 | Artemisia argyi powder-containing full degradable film and preparation method thereof |
| CN104892992A (en) * | 2015-04-24 | 2015-09-09 | 安徽颍美彩印包装有限公司 | Fire retardant full degradable film and preparation method thereof |
| CN104892996A (en) * | 2015-04-24 | 2015-09-09 | 安徽颍美彩印包装有限公司 | Tea-fragrant fully-degradable film and preparation method thereof |
| CN104892997A (en) * | 2015-04-24 | 2015-09-09 | 安徽颍美彩印包装有限公司 | Tear resistant full degradable film and preparation method thereof |
| CN104892993A (en) * | 2015-04-24 | 2015-09-09 | 安徽颍美彩印包装有限公司 | Ageing-resistant full degradable film and preparation method thereof |
| CN104892995A (en) * | 2015-04-24 | 2015-09-09 | 安徽颍美彩印包装有限公司 | Antibacterial type full degradable film and preparation method thereof |
| CN104892994A (en) * | 2015-04-24 | 2015-09-09 | 安徽颍美彩印包装有限公司 | Banana skin-based fully-degradable film and preparation method thereof |
| CN104892991A (en) * | 2015-04-24 | 2015-09-09 | 安徽颍美彩印包装有限公司 | High strength full degradable film and preparation method thereof |
| CN104893012A (en) * | 2015-04-24 | 2015-09-09 | 安徽颍美彩印包装有限公司 | Full degradable film with insect repellent efficacy and preparation method thereof |
| CN105001568B (en) * | 2015-07-01 | 2017-12-12 | 柳州蔚园塑料彩印包装有限责任公司 | A kind of degradable mulch and preparation method thereof |
| CN106117618A (en) * | 2016-06-23 | 2016-11-16 | 桐城市华猫软膜有限公司 | A kind of agricultural mulching and preparation method thereof |
| CN106117619A (en) * | 2016-06-23 | 2016-11-16 | 桐城市华猫软膜有限公司 | A kind of production technology of degradable agricultural film |
| CN106366358A (en) * | 2016-08-31 | 2017-02-01 | 迁安市隆赓塑料制品有限公司 | Multifunctional polyethylene photo-biodegradable mulching film |
| CN107383436A (en) * | 2017-06-22 | 2017-11-24 | 陕西理工大学 | A kind of Biodegradable mulch |
| CN108611761A (en) * | 2018-05-06 | 2018-10-02 | 玉溪活源科技发展有限公司 | A kind of mulch degradable nonwoven fabrics |
| CN113234258A (en) * | 2021-06-02 | 2021-08-10 | 李明会 | Biodegradable agricultural mulching film and production process thereof |
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| US5665152A (en) * | 1995-11-29 | 1997-09-09 | Midwest Grain Products | Biodegradable grain protein-based solid articles and forming methods |
| CN1357563A (en) * | 2001-12-29 | 2002-07-10 | 中国科学院长春应用化学研究所 | Prepn of biodegradable film of ternary starch-PVA-polyester system material |
| CN1618851A (en) * | 2004-10-15 | 2005-05-25 | 天津大学 | Preparation method of thermoplastic starch material |
| CN101205314A (en) * | 2006-12-19 | 2008-06-25 | 河南科技大学 | Method for preparing thermoplastic starch material |
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2011
- 2011-07-23 CN CN201110207079.1A patent/CN102329435B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5665152A (en) * | 1995-11-29 | 1997-09-09 | Midwest Grain Products | Biodegradable grain protein-based solid articles and forming methods |
| CN1357563A (en) * | 2001-12-29 | 2002-07-10 | 中国科学院长春应用化学研究所 | Prepn of biodegradable film of ternary starch-PVA-polyester system material |
| CN1618851A (en) * | 2004-10-15 | 2005-05-25 | 天津大学 | Preparation method of thermoplastic starch material |
| CN101205314A (en) * | 2006-12-19 | 2008-06-25 | 河南科技大学 | Method for preparing thermoplastic starch material |
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| CN102329435A (en) | 2012-01-25 |
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Granted publication date: 20140416 Termination date: 20200723 |