CN1238413C - Sunlight film and its making process - Google Patents
Sunlight film and its making process Download PDFInfo
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- CN1238413C CN1238413C CN 03158325 CN03158325A CN1238413C CN 1238413 C CN1238413 C CN 1238413C CN 03158325 CN03158325 CN 03158325 CN 03158325 A CN03158325 A CN 03158325A CN 1238413 C CN1238413 C CN 1238413C
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Abstract
The present invention relates to a sunlight film and a manufacturing method thereof. The sunlight film for greenhouse covering in modern facility horticulture belongs to the field of an agricultural technology. In the method, a concentrated parent material is prepared by mainly adopting and mixing low-density polyethylene, an ethylene-vinyl acetate copolymer, a dripping agent, a light stabilizing agent, a complex antioxidant, a diluting agent and a light converting agent; 10 to 15 wt% of concentrated parent material is taken, uniformly mixed with 85 to 90 wt% of base materials (the low-density polyethylene, linear low-density polyethylene and the ethylene-vinyl acetate copolymer) and put into an extruding machine to obtain the finished product through extrusion film blowing, cooling, shaping, drawing, printing, meter counting and rolling up. The present invention has the advantages of simple manufacturing technology and low cost. The sunlight film integrates no dripping, long life, thermal insulation and light (red light, blue light) conversion. The sunlight film can convert ultraviolet light passing through the sunlight film into the blue light and the red light which are required by plant photosynthesis and can make the light irradiation intensity and the light transmittance in a greenhouse higher than those of other functional greenhouse films so that the greenhouse temperature is raised. The sunlight film performs the action of nutrient element absorption promotion of plants, plant growth promotion and disease prevention.
Description
Technical field:
The present invention relates to a kind of sunlight film and manufacture method thereof, the greenhouse that is used for modern installations gardening covers, and belongs to the farm technology field.
Background technology:
Agriculture greenhouse film is the indispensable important production means a---chamber covering material in the modern installations gardening.Applying of it makes China break away from the epoch of agricultural-food shortage, makes the food and drink food of numerous people more rich and varied, and peasant's income also increases thereupon.Over nearly 20 years, the manufacturing technology of agriculture greenhouse film is constantly development, and prescription is being updated, and has been developed into the Multi-functional green house covered with plastic film film of the s-generation by the common awning film of the first-generation.Be characterized in raw material, adding specific functional agent, thereby be implemented in when the temperature difference is big in the winter-spring season canopy, canopy film internal surface can not form water droplet, thereby increase transmittance, make crop avoid freeze injury, improve temperature of shed, and because the adding of photostabilizer, the life-span of film is prolonged greatly, be that nothing on the market is dripped, long-lived film.Near several next, under the situation of having studied plant growth mechanism, the light-converting film that possesses the light selection function has appearred developing again.Thereby this technology is to add fluorescent agent to make ultraviolet ray by film be transformed into blue light and add the rare earth inorganics to make the ultraviolet ray by film be transformed into ruddiness in polyolefine material.This has just created condition for the appearance of third generation plastic sheeting for farm use.But it is little that this class is changeed light function using value, because the degradation period of light-converting agent short (only some months), the commentaries on classics light intensity is low, along with wearing out rapidly of film, changes also just end of photophase.
Summary of the invention:
The objective of the invention is to overcome above-mentioned weak point, a kind of manufacturing process is simple, low cost of manufacture thereby provide, can make full use of sun power, integrate do not have to drip, longevity, high printing opacity, the high insulation and ultraviolet dual commentaries on classics light performances such as (blue light and ruddiness), can frost damage prevention, and can improve a kind of sunlight film and the manufacture method thereof of crop yield, quality.
Main solution of the present invention is achieved in that
Its composition proportioning (percentage ratio by weight) of sunlight film of the present invention is:
A: concentrate the masterbatch prescription:
1. new LDPE (film grade) 39.8-58.8
2. ethylene-vinyl acetate copolymer 20-25
3. drip agent 10.4-14.4
4. photostabilizer 1.2-2.4
5. composite antioxidant 0.4-0.8
6. sustained release dosage 8-16
7. light-converting agent is got rare-earth europium 1.2-1.6
With plasticating in the above-mentioned prescription input closed plastics processing mill, then plastifying heat material is added forcing machine and extrude bar, cooling, pelletizing are sieved.
B: base material formulation
1. new LDPE (film grade) 33.4-100
2. ethylene-vinyl acetate copolymer 0-33.3
3. LLDPE 0-33.3
Above-mentioned prescription is mixed into base-material.
C sunlight film formulation
Get concentrated masterbatch: 10-15, base-material: put into forcing machine after 85-90 mixes, extruding blown film, cooling and shaping, traction, mark, metering rolling is finished product.
Production technique of the present invention is as follows: press proportion speed weighing each component:
1. concentrate the production of masterbatch:
Get new LDPE (film grade), ethylene-vinyl acetate copolymer, drip agent, photostabilizer, composite antioxidant, sustained release dosage, dual light-converting agent and get rare-earth europium; pressing said sequence drops in the closed plastics processing mill; under 110-140 ℃ of temperature, plasticated 10-15 minute; then plastifying heat material is added and force in the reinforced extruding granulator; extruder temperature remains on 130-170 ℃; by extruding tie rod; advance the cold water cooling; the pelletizing of material bar is sieved; pellet sucks drying machine; drying machine temperature: 60-80 ℃, dry 45-60 minute, emit the weighing and bagging warehouse-in.
2. the production of base-material:
Get new LDPE (film grade), ethylene-vinyl acetate copolymer, linear low density polyethylene mixes.
3. the production of sunlight film:
Get concentrated masterbatch, base-material is mixed into PP Pipe Compound, PP Pipe Compound is sucked the forcing machine hopper, extruder temperature: 130-170 ℃, central feeding spiral die temperature: 160-190 ℃, the film Guan Jingshuan air channel cooling and shaping of inflation, traction, lettering, metering rolling, test package warehouse-in.
The additive that the present invention selects for use is as follows:
1. drip agent
(1) polyol esters of fatty acids (FWD type)
(2) compound of polyvalent alcohol polyoxyethylene ester and polyoxyethylene alkyl amine (LA, FG)
2. composite antioxidant
1.B-900(168∶1076＝4∶1)
168: tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester
1076: β-(4-hydroxyl 3,5 di-tert-butyl-phenyls) propionic acid octadecyl ester
2 B-215(168∶1010＝2∶1)
168: tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester, 1010: four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters
Because film all is subjected to thermo-oxidative ageing in processing, storing and use, for being worked in coordination with, itself and photostabilizer prevent to wear out, select above-mentioned composite antioxidant for use.
3 photostabilizers
Because the sunlight film tans by the sun in sunlight throughout the year, wherein especially ultraviolet ray can destroy the molecular chain of film, causes agingly, is the hindered amine light stabilizer of selecting excellent property in this this film, and molecular weight is about 2000-3000.
(1) 944: poly-[6-(1,1,3, the 3-tetramethyl butyl)-imino-]-1,3,5-triazines-2,4 two bases]-[2-(2,2,6, the 6-tetramethyl-piperidyl)-amino]-hexylidene-[4-(2,2,6, the 6-tetramethyl-piperidyl)]-imino-
(2) 3346: poly-[(6-morpholino-5-triazine-2,4-two bases) [(2,2,6,6-tetramethyl--4-piperidyl) imido grpup]-pregnancy fork [(2,2,6,6-tetramethyl--4-piperidyl) imido]]
4. sustained release dosage: M-10 Feldspar Powder, superfine talcum powder, ultrafine kaolin
This product is used to adsorb additives such as drip agent, and it is evenly dispersed in the sunlight film, can slowly discharge drip agent equably to precipitate into sunlight film surface, improves surface tension, improves the surface hydrophilic ability, thereby realizes prolonging the drip lasting period.Sustained release dosage is neutral mineral filler, and fineness is about the 2500-3000 order.
5. light-converting agent
UTRB: rare-earth europium
This product can be collaborative with other additive, and major function is a ultraviolet ray that sees through the sunlight film, excites to be transformed into blue light and ruddiness.Nano level rare-earth light conversion agent also helps the raising of other function.
The composition of raw materials that the present invention adopts is market and purchases, and the processing units of employing is a general-purpose equipment.
Compared with the prior art the present invention has the following advantages:
1. do not have and drip, long-lived, insulation, change light (red, blue light) in one;
2. change light function uniqueness, can be transformed into UV-light required blue light of photosynthesis of plant and ruddiness by the sunlight film.
Show according to test result:
1 sunlight film outward appearance is a colorless and transparent film, under the 254-365nm UV-irradiation, presents the reddish blue fluorescence that is invisible to the naked eye;
2 under the effect of 240nm excitation wavelength, in 400-500nm, 600-68nm wavelength region, all produces the fluorescent emission bands of a spectrum.∧ em=450,590,612,650,700nm, primary front ∧ em=450,613nm.The above results explanation sunlight film has UV-light and converts blue light and the dual commentaries on classics photoeffect of ruddiness to.
Above-mentioned performance specification sunlight film drips in original nothing, long-lived, high heat preservation performance basic on, increase photochromic effect again, specifically increased following function again:
1, light temperature effect: intensity of illumination and transmittance all are higher than other functional greenhouse film in the sunlight film canopy, thereby the canopy temperature is increased.Visible light transmittance rate increases 3-4%, 1-3 ℃ of canopy temperature rise;
2, biological effect: the sunlight film of rare-earth light-converting can promote the absorption of crop to nutrient nitrogen, phosphorus, potassium, improves leaf area and the expansions degree of plant, and increase plant plant height and petiole are long, can increase the chlorophyll content of blade, makes in the blade photosynthesis abundant; Solubility sugar, starch, protein, Vitamin C content raise;
3 yield increasing effects: with the contrast of general utility functions film, the sunlight film can promote crop yield in the canopy, and particularly early spring, the stubble amount of increase in production was bigger, can make crop shift to an earlier date listing in 5-7 days;
4, economic benefits: solar film all can increase production for leaf vegetables, melon or fruit type crops, and sunlight film and normal film, sunlight film are following table with there not being its input-output ratio of long-lived film of dripping:
| The name of an article | Sunlight film and general film ratio | The sunlight film drips a long-lived film ratio with nothing |
| Eggplant | 1∶2.8 | 1∶3.9 |
| Tomato | 1∶7.6 | 1∶4.35 |
| Cucumber | 1∶11.3 | 1∶4.13 |
| Strawberry | 1∶16 | 1∶7.15 |
5, product mass effect: crop in the canopy that the sunlight film covers, vitamins C in the fruit and sugar part content all are higher than control film, can also make the percentage of fertile fruit height of melon and fruit, and fruit deformation rate is low, and the fruitlet rate reduces;
6, disease resistance effect: in the canopy that the sunlight film covers, owing to reduced ultraviolet ray transmissivity, diseases such as the leaf blight of crop, verticillium can reduce about 2% for this reason.
The development and operation of sunlight film, significant for China's modernization Agricultural Development, outwardness has made full use of this inexhaustible energy of sun power, and the quality of life that improves the people is made contributions again.
Description of drawings:
Fig. 1 concentrates the masterbatch process flow sheet for the present invention:
Fig. 2 is a PP Pipe Compound process flow sheet of the present invention:
Fig. 3 is a sunlight membrane process schema of the present invention:
Embodiment:
Following the present invention is further described the combined process schema to the present invention:
Its composition and proportioning are pressed (weight percentage) among the present invention:
Embodiment one:
1 at first carries out process for processing to concentrating masterbatch
Get new LDPE (film grade) (LDPE) 39.8, ethylene-vinyl acetate copolymer (EVA) 25, drip agent are got polyol esters of fatty acids (FWD type) 14.4, photostabilizer is got poly-[(the 6-morpholino-5-triazine-2 of 3346{, 4-two bases) [(2,2,6,6-tetramethyl--4-piperidyl) imido grpup]-pregnancy fork [(2,2,6,6-tetramethyl--4-piperidyl) imido]] 2.4, oxidation inhibitor is got B-900[(168: 1076=4: 1) 168: tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester; 1076: β-(4-hydroxyl-3,5 di-tert-butyl-phenyl) propionic acid octadecyl ester] 0.8, sustained release dosage is got ultrafine kaolin 16, and light-converting agent is got UTRB: rare-earth europium 1.6 or other organic coordination compound.Above-mentioned auxiliary agent and base-material weighing are fed intake in order; put into the closed plastics processing mill, under 110-140 ℃ of temperature, plasticated 10-15 minute, plastifying heat material is added force in the reinforced extruding granulator then; extruder temperature remains on 130-170 ℃; by extruding tie rod, advance the cold water cooling, the pelletizing of material bar is sieved; pellet sucks drying machine and dries; the drying machine temperature is 60-80 ℃, and oven dry is 45-60 minute in drying machine, carries out weighing at last, packing warehouse-in is standby.
2. base-material is processed:
Get new LDPE (film grade) (LDPE) 33.4, ethylene-vinyl acetate copolymer (EVA) 33.3, linear low density polyethylene (LLDPE) 33.3 carries out behind the uniform mixing standby.
3. the process for processing of sunlight film:
Get above-mentioned stand-by concentrated masterbatch 10, base-material 90 adds the spice machine and stirred 4-6 minute, send into the forcing machine hopper by transfer roller then, extruder temperature is controlled at 130-170 ℃, central feeding spiral die temperature is at 160-190 ℃, the extruder screw diameter is 150mm, length-to-diameter ratio 1: 28, band mixing refining head.Extrusion die diameter 1.2M adopts upper blowing method, and the film pipe of inflation is through the vane cooling of two air channels, and the herringbone clamping plate are guided, take off roll traction, lettering, metering, rolling, check, weighing, packing warehouse-in.
In the present embodiment, through forcing machine be blow molded into that collection do not have to drip, the sunlight film of long-lived, high insulation, dual commentaries on classics light (blue light and ruddiness).When film thickness between 0.08-0.01mm its ageing-resistant life-span at 12-18 month.
Embodiment two:
1. concentrate the process for processing of masterbatch
Equally get new LDPE (film grade) (LDPE) 49.3 with above-mentioned embodiment 1, ethylene-vinyl acetate copolymer (EVA) 22.5, drip agent get polyvalent alcohol oxygen vinyl acetate and poly-seedling vinyl alkyl ammonia compound (LA, FG) 12.2, photostabilizer is got 944{, and poly-[6-(1,1,3, the 3-tetramethyl butyl)-imino-]-1,3,5-triazine-2,4 two bases]-[2-(2,2,6, the 6-tetramethyl-piperidyl)-amino]-hexylidene-[4-(2,2,6, the 6-tetramethyl-piperidyl)]-imino-} 1.8, composite antioxidant is got B-900[(168: 1076=4: 1) 168: tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester; 1076: β-(4-hydroxyl-3,5 di-tert-butyl-phenyl) propionic acid octadecyl ester] 0.6, sustained release dosage is got ultrafine kaolin 12, and light-converting agent is got rare-earth europium 1.4.It is standby that working method among above-mentioned base-material and the auxiliary agent employing embodiment one is made concentrated masterbatch.
2. the process for processing of base-material:
Get new LDPE (film grade) (LDPE) 66.6, ethylene-vinyl acetate copolymer (EVA) 16.2 linear low density polyethylenes (LDPE) 17.2, mix standby,
3. the process for processing of sunlight film:
Get and concentrate masterbatch 12.5, base-material 87.5 mixing and stirring, adopt manufacturing process among the embodiment 1, through forcing machine be blow molded into collection do not have drip, long-lived, high insulation, dual commentaries on classics light is in the sunlight film of one.The thickness of film is between 0.12-0.14mm, and its ageing-resistant life-span can be at 24-36 month.
Embodiment three:
1. concentrate the processing of masterbatch:
Get new LDPE (film grade) (LDPE) 58.8, ethylene-vinyl acetate copolymer (EVA) 20, drip agent is got polyol esters of fatty acids (FWD type) 10.4, photostabilizer is got 944{, and poly-[6-(1,1,3, the 3-tetramethyl butyl)-and imino-]-1,3,5-triazine-2,4 two bases }-[2-(2,2,6, the 6-tetramethyl-piperidyl)-amino]-hexylidene-[4-(2,2,6, the 6-tetramethyl-piperidyl)]-and imino-} 1.2, composite antioxidant is got B-900[(168: 1076=4: 1) 168: tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester; 1076: β-(4-hydroxyl-3,5 di-tert-butyl-phenyl) propionic acid octadecyl ester] 0.4, sustained release dosage is got superfine talcum powder 8, and light-converting agent is got rare-earth europium 1.2.It is standby that production method among the above-mentioned prescription employing embodiment one, two is made the concentrated masterbatch that meets quality index.
2. to the processing of base-material:
Get new LDPE (film grade) (LDPE) 100 and be the base-material of present embodiment.
3. the process for processing of sunlight film:
Get and concentrate masterbatch 15, base-material 85 mixing and stirring, manufacturing process makes among the employing embodiment 1,2, meets the dual commentaries on classics light of quality index, and the collection nothing is dripped, long-lived, height insulation, in the sunlight film of one.
Claims (6)
1, a kind of sunlight film, feature be its form proportioning by weight percentage ratio be:
A: concentrate the masterbatch prescription:
(1), new LDPE (film grade) 39.8-58.8
(2), ethylene-vinyl acetate copolymer 20-25
(3), drip agent 10.4-14.4
(4), photostabilizer 1.2-2.4
(5), composite antioxidant 0.4-0.8
(6), sustained release dosage 8-16
(7), rare-earth europium 1.2-1.6
Above-mentioned prescription dropped into out in the closed plastics processing mill plasticate, then plastifying heat material is added forcing machine and extrude bar, cooling, pelletizing are sieved;
B: the prescription of base-material
(1), new LDPE (film grade) 33.4-100
(2), ethylene-vinyl acetate copolymer 0-33.3
(3), LLDPE 0-33.3
Above-mentioned prescription is mixed into base-material;
The prescription of C sunlight film:
Get concentrated masterbatch: 10-15, base-material: put into forcing machine after 85-90 mixes, extruding blown film, cooling and shaping, traction, lettering, metering rolling is finished product.
2, sunlight film according to claim 1 is characterized in that described drip agent adopts the compound of aliph polyols fat and polyvalent alcohol polyoxyethylene ester and polyoxyethylene alkyl amine.
3, the described sunlight film of claim 1, it is characterized in that described oxidation inhibitor adopts tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester and β-(4-hydroxyl 3,5 di-tert-butyl-phenyls) compound of propionic acid octadecyl ester and tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) compound of ester and four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
4, sunlight film according to claim 1 is characterized in that described photostabilizer adopts that poly-[6-(1,1,3, the 3-tetramethyl butyl)-imino-]-1,3,5-triazines-2,4 two bases]-[2-(2,2,6, the 6-tetramethyl-piperidyl)-amino]-hexylidene-[4-(2,2,6, the 6-tetramethyl-piperidyl)]-imino-and poly-[(6-morpholino-5-triazine-2,4-two bases) [(2,2,6,6-tetramethyl--4-piperidyl) imido grpup]-pregnancy fork [(2,2,6,6-tetramethyl--4-piperidyl) imido]].
5, sunlight film according to claim 1 is characterized in that described sustained release dosage adopts Feldspar Powder, superfine talcum powder or ultrafine kaolin.
6, sunlight film according to claim 1 is characterized in that adopting following processing condition:
(1), concentrate the production of masterbatch:
Get in new LDPE (film grade), ethylene-vinyl acetate copolymer, drip agent, photostabilizer, composite antioxidant, sustained release dosage, the rare-earth europium input closed plasticator, under 110-140 ℃ of temperature, plasticated 10-15 minute, then plastifying heat material is added and force in the reinforced extruding granulator, extruder temperature remains on 130-170 ℃, by extruding tie rod, advance the cold water cooling, the pelletizing of material bar is sieved, pellet sucks drying machine, drying machine temperature: 60-80 ℃, dry 45-60 minute, emit the weighing and bagging warehouse-in;
(2), the production of base-material:
Getting new LDPE (film grade), ethylene-vinyl acetate copolymer, LLDPE mixes;
(3), the production of sunlight film:
Get concentrated masterbatch, base-material is mixed into PP Pipe Compound, PP Pipe Compound is sucked the forcing machine hopper, extruder temperature: 130-170 ℃, central feeding spiral membrane head temperature: 160-190 ℃, the film pipe of inflation is through extrusion-blown modling, cooling and shaping, traction, lettering, metering rolling, test package warehouse-in.
Priority Applications (1)
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| CN 03158325 CN1238413C (en) | 2003-09-20 | 2003-09-20 | Sunlight film and its making process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03158325 CN1238413C (en) | 2003-09-20 | 2003-09-20 | Sunlight film and its making process |
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| CN1526757A CN1526757A (en) | 2004-09-08 |
| CN1238413C true CN1238413C (en) | 2006-01-25 |
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| CN 03158325 Expired - Fee Related CN1238413C (en) | 2003-09-20 | 2003-09-20 | Sunlight film and its making process |
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| CN103435894B (en) * | 2013-09-10 | 2015-08-19 | 江南大学 | A kind of slow release type food oxydating resistance packing film and preparation method thereof |
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| CN109749101A (en) * | 2019-02-12 | 2019-05-14 | 优矿塑新材料科技(芜湖)有限公司 | A kind of hydrophobic type polyethylene master batch and its application on plastic greenhouse film |
| CN110903767B (en) * | 2019-11-08 | 2021-09-10 | 华南农业大学 | Ultraviolet curing adhesive with light conversion function and preparation method thereof |
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2003
- 2003-09-20 CN CN 03158325 patent/CN1238413C/en not_active Expired - Fee Related
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