CN1847291A - Heat insulating mulching - Google Patents
Heat insulating mulching Download PDFInfo
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- CN1847291A CN1847291A CN 200610042691 CN200610042691A CN1847291A CN 1847291 A CN1847291 A CN 1847291A CN 200610042691 CN200610042691 CN 200610042691 CN 200610042691 A CN200610042691 A CN 200610042691A CN 1847291 A CN1847291 A CN 1847291A
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- ethylene
- vinyl acetate
- acetate copolymer
- copolymer resin
- heat insulating
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Abstract
The heat insulating mulching has ethylene-vinyl acetate copolymer resin carrier and is prepared through preparing heat insulating agglomerate with ethylene-vinyl acetate copolymer 40-60 %, inorganic heat insulating agent 20-30 %, solubilizer 10-15 % and dripping agent 10-15 % and through mixing and extruding in a double screw extruder; mixing ethylene-vinyl acetate copolymer resin 10-25 %, linear low density polyethylene 60-80 % and the heat insulating agglomerate 10-15 % and processing with a blow molding machine. The present invention has excellent heat insulating performance and is favorable to crop root system growth and high crop yield and quality.
Description
Technical field
The present invention relates to coating film field, agripast ground, particularly a kind of heat insulating mulching that adopts ethylene-vinyl acetate copolymer.
Background technology
Present widely used agricultural with plastics ground coating film work material mainly with LLDPE (LLDPE) and hp-ldpe (LDPE) on a small quantity, high density polyethylene(HDPE) (HDPE) two or three resin alloy after extrude, blowing processes.There is following shortcoming in it in agricultural production application: because night, face of land heat mainly was to scatter and disappear with the form of infrared radiant heat, its radiation wavelength especially concentrates between the 7-11 μ m at 3-40 μ m.And polyethylene to the infrared light transmitance between the 3-40 μ m between 85-90%.This defective causes that face of land heat scatters and disappears night very easily in a large number in the film, causes under the film soil day and night temperature bigger, has a strong impact on growing of crop root.
Summary of the invention
The objective of the invention is at polyethylene 3-40 μ m infrared light transmitance at 85-90%, and ethylene-vinyl acetate copolymer (EVA) to 3-40 μ m infrared light transmitance in this characteristic below 40%, the EVA resin is introduced the process for processing of surface polyethylene coating film, thereby the corresponding again EVA special-purpose thermal insulation master batch material of special use that cooperates drops to below 50% the film infrared light transmission rate, greatly the heat retaining property of enhanced film, light transmission and snappiness.
The objective of the invention is to be achieved through the following technical solutions:
A kind of heat insulating mulching is a carrier with the ethylene-vinyl acetate copolymer resin, makes by following proportioning raw materials and method:
A, be at first in proportion: ethylene-vinyl acetate copolymer resin 40-60%, inorganic heat preservation agent 20-30%, solubilizing agent 10-15%, drip agent 10-15%, after four kinds of materials are carried out thorough mixing, use the dual-screw pelletizer group to make ethylene-vinyl acetate copolymer resin special-purpose thermal insulation master batch material;
B, then be by weight proportion again: ethylene-vinyl acetate copolymer resin 10-25%, LLDPE 60-80%, ethylene-vinyl acetate copolymer resin special-purpose thermal insulation master batch material 10-15% will obtain finished product by the machine-shaping of blown film unit behind 3 kinds of material mixings.
Described finished product can require to produce according to different areas and crop: all size of fabric width 700-4000mm * thickness 0.008-0.02mm.
Beneficial effect: the present invention to 3-40 μ m infrared light transmitance below 50%, night insulation is better, face of land day and night temperature is less under the film, simultaneously since this film than common ground film transmittance height, dewfall not under the film, compare under the film early with common ground film between surface temperature can improve 1-3 ℃, help the normal growth of farm crop root system, can obviously shorten the plant growth cycle, improve the yield and quality of farm crop.
The warm crop of happiness such as maize planting, watermelon and vegetables in early spring, especially use the EVA heat insulating mulching can make the crop budding time in advance in northwest and southwestern day and night temperature land plateau area, shorten growth cycle, improve the yield and quality of farm crop.In day-light greenhouse is survived the winter in the north, use simultaneously the EVA heat insulating mulching to be used for ground and cover or build that solanberry class crops such as little shed plantation cucumber, eggplant can obviously improve the yield and quality in the canopy, strengthen crop disease-resistant evil ability.
This product processes is simple, and it is convenient to use, and is applicable to the plantation of Different Crop Various Seasonal, and popularizing application prospect is preferably arranged.
Embodiment
Below in conjunction with embodiment the present invention is described in more detail:
Embodiment 1
1, gets ethylene-vinyl acetate copolymer resin 40kg at first in proportion, water-ground limestone 30kg, polyethylene wax and industrial white oil be 15kg, drip agent 15kg altogether, after four kinds of materials are carried out thorough mixing, use the dual-screw pelletizer group to make ethylene-vinyl acetate copolymer resin special-purpose thermal insulation master batch material;
2, get in proportion again: ethylene-vinyl acetate copolymer resin 10kg, LLDPE 80kg, ethylene-vinyl acetate copolymer resin special-purpose thermal insulation master batch material 10kg will obtain finished product by the machine-shaping of blown film unit behind 3 kinds of material mixings.
Embodiment 2
1, gets ethylene-vinyl acetate copolymer resin 60kg at first in proportion, kaolin 20kg, stearic acid and polyethylene wax be 10kg, drip agent 10kg altogether, four kinds of materials are carried out thorough mixing after, use the dual-screw pelletizer group to make ethylene-vinyl acetate copolymer resin special-purpose thermal insulation master batch material;
2, get in proportion again: ethylene-vinyl acetate copolymer resin 25kg, LLDPE 60kg, ethylene-vinyl acetate copolymer resin special-purpose thermal insulation master batch material 15kg will obtain finished product by the machine-shaping of blown film unit behind 3 kinds of material mixings.
Embodiment 3
1, gets ethylene-vinyl acetate copolymer resin 45kg at first in proportion; sericite 15kg; titanate coupling agent and stearic acid be 15kg, drip agent 25kg altogether, four kinds of materials are carried out thorough mixing after, use the dual-screw pelletizer group to make ethylene-vinyl acetate copolymer resin special-purpose thermal insulation master batch material:
2, get in proportion again: ethylene-vinyl acetate copolymer resin 25kg, LLDPE 60kg, ethylene-vinyl acetate copolymer resin special-purpose thermal insulation master batch material 15kg will obtain finished product by the machine-shaping of blown film unit behind 3 kinds of material mixings.
Claims (5)
1, a kind of heat insulating mulching is characterized in that with the ethylene-vinyl acetate copolymer resin being carrier, makes by following proportioning raw materials and method:
A, be at first in proportion: ethylene-vinyl acetate copolymer resin 40-60%, inorganic heat preservation agent 20-30%, solubilizing agent 10-15%, drip agent 10-15%, after 4 kinds of materials are carried out thorough mixing, use the dual-screw pelletizer group to make ethylene-vinyl acetate copolymer resin special-purpose thermal insulation master batch material;
B, then be by weight proportion again: ethylene-vinyl acetate copolymer resin 10-25%, LLDPE 60-80%, ethylene-vinyl acetate copolymer resin special-purpose thermal insulation master batch material 10-15% will obtain finished product by the machine-shaping of blown film unit behind 3 kinds of material mixings.
2, a kind of heat insulating mulching according to claim 1, it is characterized in that the described proportioning raw materials of making ethylene-vinyl acetate copolymer resin special-purpose thermal insulation master batch material is: ethylene-vinyl acetate copolymer resin 45%, inorganic heat preservation agent 15%, solubilizing agent 15%, drip agent 25%.
3, a kind of heat insulating mulching according to claim 1 and 2 is characterized in that described solubilizing agent is: one or both in polyethylene wax, chlorinatedpolyethylene wax, industrial white oil, titanate coupling agent, the stearic acid.
4, a kind of heat insulating mulching according to claim 1 and 2 is characterized in that described inorganic heat preservation agent is a kind of in water-ground limestone, kaolin, sericite, the talcum powder.
5, a kind of heat insulating mulching according to claim 1 is characterized in that described finished product can require to produce according to different areas and crop: all size of fabric width 700-4000mm * thickness 0.008-O.02mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610042691 CN1847291A (en) | 2006-04-14 | 2006-04-14 | Heat insulating mulching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610042691 CN1847291A (en) | 2006-04-14 | 2006-04-14 | Heat insulating mulching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1847291A true CN1847291A (en) | 2006-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610042691 Pending CN1847291A (en) | 2006-04-14 | 2006-04-14 | Heat insulating mulching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1847291A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571021A (en) * | 2012-07-19 | 2014-02-12 | 中国石油天然气股份有限公司 | Polyolefin long-acting anti-fogging film master batch |
| CN103571024A (en) * | 2012-07-19 | 2014-02-12 | 中国石油天然气股份有限公司 | Long-acting polyolefin anti-fogging film master batch |
| CN105602150A (en) * | 2016-02-02 | 2016-05-25 | 安徽恒昊科技有限公司 | Sericite-modified ultraviolet-resistant high-polymer master batch and composite material thereof |
| CN105754181A (en) * | 2016-03-31 | 2016-07-13 | 太仓市新华粮食生产专业合作社 | Agricultural film capable of insulating heat and preserving heat |
-
2006
- 2006-04-14 CN CN 200610042691 patent/CN1847291A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571021A (en) * | 2012-07-19 | 2014-02-12 | 中国石油天然气股份有限公司 | Polyolefin long-acting anti-fogging film master batch |
| CN103571024A (en) * | 2012-07-19 | 2014-02-12 | 中国石油天然气股份有限公司 | Long-acting polyolefin anti-fogging film master batch |
| CN103571021B (en) * | 2012-07-19 | 2015-11-18 | 中国石油天然气股份有限公司 | Polyolefin long-acting anti-fogging film master batch |
| CN103571024B (en) * | 2012-07-19 | 2015-11-18 | 中国石油天然气股份有限公司 | Long-acting polyolefin anti-fogging film master batch |
| CN105602150A (en) * | 2016-02-02 | 2016-05-25 | 安徽恒昊科技有限公司 | Sericite-modified ultraviolet-resistant high-polymer master batch and composite material thereof |
| CN105754181A (en) * | 2016-03-31 | 2016-07-13 | 太仓市新华粮食生产专业合作社 | Agricultural film capable of insulating heat and preserving heat |
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