CN105330935A - Light-scattering, cooling and thermal-radiation regulating membrane and preparation method - Google Patents
Light-scattering, cooling and thermal-radiation regulating membrane and preparation method Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2423/08—Copolymers of ethene
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Abstract
The invention discloses a light-scattering, cooling and thermal-radiation regulating membrane. The regulating membrane comprises raw materials as follows: a film-forming resin material, a far-infrared micropowder material, a trace light-absorbing micropowder material and a high-refraction-index micropowder material, wherein the thickness of the regulating membrane is 80-150 mu m; the film-forming resin material is LDPE (low-density polyethylene), the high-refraction-index micropowder material is rutile type titanium dioxide, the far-infrared micropowder material is far-infrared ceramic micropowder, and the trace light-absorbing micropowder material is carbon black. With the adoption of the prepared light-scattering, cooling and thermal-radiation regulating membrane, the shading rate of sunlight can be up to 99%, and when agricultural facilities are covered, surface temperatures of the agricultural facilities are 17-25 DEG C lower than those of facilities not covered with the membrane.
Description
Technical field
The present invention relates to a kind of astigmatism cooling thermal radiation regulation and control film and preparation method, belong to agricultural technology field.
Astigmatism cooling thermal radiation regulation and control film mainly contains wide spectrum printing opacity, low-refraction film forming resinous material, high refractivity micropowder material, far infrared rays micropowder material, micro-photoabsorption micropowder material.
Astigmatism cooling thermal radiation regulation and control film be applicable to spring and summer, the autumn in summer high temperature season edible mushrooms, the dark surrounds agriculture production such as white asparagus, the vegetables blanching cultures such as blanched garlic leaves, hotbed chives, celery, livestock-raising temperature regulates and controls, and fruit tree industrialized agriculture such as temperature adjustment ahead of time or when postponing dormancy.
Background technology
The 1950's, the countries such as Japan and America and Europe start by plastic film applications in agriculture production, and the use of this technology brings the change of mode of agriculture and the leap of productivity.Japan all make use of plastic film covering technology on vegetables, flowers, fruit tree.The U.S. is used for keeping a full stand of seedings mainly through plastic film covering.USSR (Union of Soviet Socialist Republics) mainly utilizes membrane covering to come temperature raising, soil moisture conservation.
Covered rearing with plastic film technology was applied to agriculture production in 1978 by China, mainly canopy film and mulch film, was widely used in the covering material of heliogreenhouse, plastic greenhouse and Small plastic shed.At present, China's plastic sheeting for farm use output and usage quantity all occupy first place in the world.
One of Main Patterns of China's industrialized agriculture is plastic greenhouse greenhouse, and canopy film is used for heating, and realizes the off-season cultivation of fruits and vegetables.Mostly select polyethylene (PE) material masking, its molecular weight is higher, side chain number is less, ageing-resistant.
In industrialized agriculture is produced, also need dim light to lower the temperature regulate and control plant growth.Fruit tree off-season cultivation can be filled a hole in the market, and meets consumers demand, remarkable in economical benefits, but needs the natural dormancy of cold condition ahead relieving deciduous fruit tree, and this becomes the main restricting factor of fruit tree off-season cultivation.In the production of white asparagus and edible mushrooms, need suitable humiture and dark surrounds.The vegetables blanching cultures such as blanched garlic leaves, hotbed chives, celery, need suitable temperature, humidity and low light environment.Livestock breeding industry needs summer feels nice and cool growth of animal environment.
From current film applicable cases both at home and abroad, realize the measure of light modulation temperature control and mainly contain reflectance coating reflection and heat insulation technology, sunshade net dim light falling temperature technique etc.Reflectance coating is divided into metallic reflective coating, full dielectric medium reflectance coating and inter metal dielectric reflectance coating.Aluminium film technical maturity, production cost are low, and the wavelength region of work is wide, widespread use in agriculture production.Sunshade net is the novel protected covering material of one promoted over nearly 10 years, has the effect of cooling of being in the light after covering summer.
Although reflectance coating, sunshade net are used widely at agriculture field, because of its technology and textural factor, modern agricultural production demand can't be met.One is reflectance coating at agriculturally big area reflection ray, can form the bright rolling white bright pollution that bright, dizzy eye is brilliant in vain.Two is that sunshade net is limited to sunlight covering effect, can not meet the requirement of agriculture production completely.Three is that reflectance coating light loss is large, reflectivity is not high, does not have thermal radiation emissive power; Sunshade net absorbs sunlight and produces a large amount of heat energy, promotes net ambient air temperature, produce far infrared rays can two-way emission of thermal radiation, indirectly increase temperature.The two cooling-down effect is not remarkable.
Therefore, desirable astigmatism cooling regulation and control film is not also had in agriculture production.At transformation mode of agriculture, under improving the background of agricultural performance and energy-saving and emission-reduction, be badly in need of a kind of novel astigmatism cooling adjusting function film.
There is following defect in prior art: (1) covering effect is poor, low to the hiding rare of sunlight; (2) metallic membrane easily produces light pollution and heavy metal contamination; (3) lower the temperature, effect of heat insulation is not good; (4) function singleness, shading, heat insulation, cooling and thermal resistance can not possess simultaneously.
Summary of the invention
The problem to be solved in the present invention is for above deficiency, provides a kind of astigmatism cooling thermal radiation regulation and control film and preparation method, realizes following goal of the invention:
(1) prepare astigmatism cooling thermal radiation regulation and control film, make it have good covering function.When full sun, this film has very high astigmatism covering effect and a small amount of extinction covering effect to visible ray, infrared rays and ultraviolet, makes sunlight hiding rare reach 99%.
(2) prepare astigmatism cooling thermal radiation regulation and control film, make it have good heat insulating function.This film to visible ray, ultraviolet scattered power reaches 97%, reaches 93% near infrared scattering of light rate, cuts off sunlight to the irradiation of agricultural facility, reduce sun power and conducted to agricultural facility by film.
(3) prepare astigmatism cooling thermal radiation regulation and control film, make it have good cooling function.This film is by far-infrared material thermal radiation cooling own temperature, and in full sun situation, the agricultural facility surface temperature covering this film is than without the low 17-25 DEG C of this film temperature.
(4) prepare astigmatism cooling thermal radiation regulation and control film, make it have thermal resistance function.In full sun situation, after this film is lowered the temperature by thermal radiation, the 3-6 DEG C of temperature difference can be formed at plane of illumination and shady face.
For achieving the above object, by the following technical solutions:
A kind of astigmatism cooling thermal radiation regulation and control film, the raw material of described regulation and control film comprises: film forming resinous material.
Below the further improvement to technique scheme:
Described regulation and control film, with parts by weight, comprises following feed composition:
LDPE37-320 part
LLDPE14-183 part
TPU0.9-9 part
Rutile type Titanium Dioxide 41.5-426 part
PE wax 2.7-27 part
Amine hydroxybenzene 1.2-13 part
Far infrared ceramic powder 2.4-20 part
Carbon black 0.3-2 part.
Described regulation and control film, with parts by weight, comprises following feed composition:
LDPE31 part
LLDPE13 part
EVA7 part
TPU0.8 part
Rutile type Titanium Dioxide 42 parts
2.7 parts, PE wax
Amine hydroxybenzene 1.3 parts
Far infrared ceramic powder 1.9 parts
Carbon black 0.3 part.
Described regulation and control film, with parts by weight, comprises following feed composition:
LDPE32 part
LLDPE12 part
PVC4 part
Rutile type Titanium Dioxide 43 parts
2.7 parts, PE wax
Amine hydroxybenzene 1.4 parts
Far infrared ceramic powder 2.7 parts
Carbon black 0.2 part.
Described film forming resinous material is one or more in PVC, HDPE, LDPE, LLDPE.
The raw material of described regulation and control film also comprises: far infrared rays micropowder material, micro-photoabsorption micropowder material, high refractivity micropowder material.
Described far infrared rays micropowder material is one or more in white carbon black, charcoal micro mist, tourmalinite micro mist, far-infrared ceramic micropowder;
Described micro-photoabsorption micropowder material is carbon black;
Described high refractivity micropowder material is one or more in Rutile type Titanium Dioxide, anatase thpe white powder, zinc sulphide micro mist, weisspiessglanz micro mist, zinc oxide ultra_fine powders, zinc sulfide white.
Described Rutile type Titanium Dioxide: be made up of Du Pont titanium dioxide R-103, R-105, R-900, R-931, the weight ratio of described component is 3:2:2:1; Specific refractory power is 2.73;
Described far-infrared ceramic micropowder: all-wave radiant ratio is greater than 0.9, density is 1.2-2g/cm
3, median size is less than 0.5 μm;
Described carbon black: median size is 0.021-0.025 μm, specific area is 150 ㎡/more than g.
A preparation method for astigmatism cooling thermal radiation regulation and control film,
Comprise raw material to prepare, prepare master batch and blended blown film step.
Described blended blown film step: the film thickness of preparation is 80-140 μm;
Described prepares master batch step: comprise and raw material is added single screw extrusion machine melting, sizing, cooling, traction, cutting action;
The helix angle of described single screw extrusion machine is 17 °;
In described refrigerating work procedure, coolant water temperature is 28 DEG C.
Compared with prior art, technical solution of the present invention has following beneficial effect:
(1) the astigmatism cooling thermal radiation regulation and control film that prepared by the present invention has good covering function, have very high astigmatism covering effect and a small amount of extinction covering effect to visible ray, infrared rays and ultraviolet, when full sun, this film sunlight hiding rare can reach 99%.
(2) the astigmatism cooling thermal radiation regulation and control film prepared of the present invention, to the heat insulation rate of sun heat radiation more than 80%, can be reduced sun power and be conducted to agricultural facility by film.
(3) the astigmatism cooling thermal radiation that prepared by the present invention regulates and controls film, lowers the temperature, and absorb agricultural facility heat by thermal radiation mode to self.In full sun situation, the agricultural facility surface temperature covering this film is than without the low 17-25 DEG C of this film temperature.
(4) the astigmatism cooling thermal radiation that prepared by the present invention regulates and controls film, has good thermal resistance effect.In full sun situation, this film forms the 3-6 DEG C of temperature difference at plane of illumination and shady face.
embodiment 1 one kinds of astigmatism cooling thermal radiation regulation and control films
The described film forming resinous material of a kind of astigmatism cooling thermal radiation regulation and control film mainly containing wide spectrum printing opacity, low-refraction, high refractivity micropowder material, far infrared rays micropowder material, micro-photoabsorption micropowder material.
(1) the wide spectrum printing opacity described in, the film forming resinous material of low-refraction:
Film-forming resin can select the resins such as PVC, HDPE, LDPE, LLDPE.Preferred Low Density Polyethylene (LDPE), density is in 0.915-0.940g/cm
3between, specific refractory power is 1.51, high in the far infrared rays transmissivity of 7.0 ~ 13.0 mu m wavebands, is approximate far infrared rays light penetrating object.
(2) the high refractivity micropowder material described in:
Rutile type Titanium Dioxide (specific refractory power 2.73), anatase thpe white powder (specific refractory power 2.55), zinc sulphide micro mist (specific refractory power 2.37), weisspiessglanz micro mist (specific refractory power 2.09-2.25), zinc oxide ultra_fine powders (specific refractory power 2.02), zinc sulfide white (specific refractory power 1.84) can be selected.
Preferred Rutile type Titanium Dioxide, specific refractory power is 2.73, density is 4.26g/cm
3, median size is less than 0.6 μm, and maximum particle diameter is not more than 1 μm.
(3) the far infrared rays micropowder material described in:
The conventional material that can produce far infrared rays has: white carbon black, charcoal micro mist, tourmalinite micro mist, far-infrared ceramic micropowder.
Preferred far-infrared ceramic micropowder is superfine white powder (Al
2o
3, MgO, ZnO, SiO
2, ZrO
2and the mixture of rare earth oxide), density: 1.2-2g/cm
3, median size is less than 0.5 μm, and all-wave radiant ratio is greater than 0.9, is 0.95 in 8-14um wave band radiant ratio.
(4) the micro-photoabsorption micropowder material described in:
Preferred carbon black, median size is 0.021-0.025 μm, and specific area is 150 ㎡/more than g.Be 0.95 at 8.0-14 mu m waveband far infrared transmissivity.
Described Rutile type Titanium Dioxide is evenly dispersed in LDPE film-forming resin.This film to the relatively little visible ray of wavelength, ultraviolet scattered power can reach 97%; Can 93% be reached to the relatively large near infrared scattering of light rate of wavelength.This film, to the efficient scattering process of light, makes solar radiation obtain scattering to the energy major part on film, instead of by film absorption.
Rutile type Titanium Dioxide is evenly dispersed in LDPE film-forming resin.
Described Rutile type Titanium Dioxide is formulated by weight 3:2:2:1 by Du Pont titanium dioxide R-103, R-105, R-900, R-931, and median size controlled at 0.6 μm, maximum particle diameter is not more than 1 μm, effectively can take into account the scattering efficiency of different wavelengths of light; LDPE resin and Rutile type Titanium Dioxide weight concentration per-cent are pressed 50:40 prepare, the thickness of preparation is 100-140 μm of astigmatism cooling thermal radiation regulation and control film, and sunlight scattering hiding rare can reach 95%.
Carbon black is joined equably in astigmatism cooling thermal radiation regulation and control film.
Add the carbon black that particle diameter is little, specific area is large of trace, can increase the absorption number of times of carbon black to sunlight particularly nearly red line, strengthen extinction film covering power further, the total hiding rare of sunlight reaches 99%.
Far-infrared ray ceramic micro mist is evenly joined in astigmatism cooling thermal radiation regulation and control film.
The thermal energy of film is far infrared rays by far infrared ceramic powder, with far-infrared heat radiation form to the space lunch close to zero absolute temperature, achieves film self cooling.
In astigmatism cooling thermal radiation regulation and control film prepared by the present invention, LDPE is high in the far infrared rays transmissivity of 7.0 ~ 13.0 mu m wavebands, is approximate far infrared rays light penetrating object; Far infrared ceramic powder is 0.95 in 8-14 mu m waveband radiant ratio.
In astigmatism cooling thermal radiation regulation and control film prepared by the present invention, far-infrared ceramic micropowder median size is less than 0.5 μm; Carbon black median size is 0.021-0.025 μm; Rutile type Titanium Dioxide, median size is less than 0.6 μm, and maximum particle diameter is not more than 1 μm.It is about 90% at 8-13 mu m waveband that far-infrared ceramic micropowder launches far-infrared thermal radiation.Far-infrared thermal radiation wavelength is about 13 times of above-mentioned micropowder material median size, and the micropowder material in film is very little to far infrared rays hiding rare, far infrared rays by diffraction mode to spatial emission.
In astigmatism cooling thermal radiation regulation and control film prepared by the present invention, astigmatism cooling thermal radiation regulation and control film thickness is at 80-150 μm, high refractivity micropowder material thermal conductivity about 6.5W/m.K in film, LDPE film-forming resin thermal conductivity about 0.3W/m.K, it is fine that ceramic coefficient is about 1.5W/m.K three's heat-proof quality, blocked heat energy and conducted to agricultural facility by film.In full sun situation, this film is lowered the temperature by thermal radiation, can form the 3-6 DEG C of temperature difference at plane of illumination and shady face.
the formula of embodiment 2 astigmatism cooling thermal radiation regulation and control film
The composition of raw materials of astigmatism cooling thermal radiation regulation and control film:
Formula one:
The parts by weight of raw materials proportioning of described astigmatism cooling thermal radiation regulation and control film is:
Rutile type Titanium Dioxide 426 parts
LDPE320 part
LLDPE183 part
TPU9 part
Amine hydroxybenzene 13 parts
Cured 27 parts of PE
Far infrared ceramic powder 20 parts
Carbon black 2 parts
Formula two:
The parts by weight of raw materials proportioning of described astigmatism cooling thermal radiation regulation and control film is:
LDPE31 part
LLDPE13 part
EVA7 part
TPU0.8 part
Rutile type Titanium Dioxide 42 parts
2.7 parts, PE wax
Amine hydroxybenzene 1.3 parts
Far infrared ceramic powder 1.9 parts
Carbon black 0.3 part
Formula three:
The parts by weight of raw materials proportioning of described astigmatism cooling thermal radiation regulation and control film is:
LDPE32 part
LLDPE12 part
PVC4 part
Rutile type Titanium Dioxide 43 parts
2.7 parts, PE wax
Amine hydroxybenzene 1.4 parts
Far infrared ceramic powder 2.7 parts
Carbon black 0.2 part
Formula four:
The parts by weight of raw materials proportioning of described astigmatism cooling thermal radiation regulation and control film is:
LDPE37 part
LLDPE14 part
TPU0.9 part
Rutile type Titanium Dioxide 41.5 parts
2.7 parts, PE wax
Amine hydroxybenzene 1.2 parts
Far infrared ceramic powder 2.4 parts
Carbon black 0.3 part
Rutile type Titanium Dioxide in the formula of above-mentioned astigmatism cooling thermal radiation regulation and control film is: Du Pont titanium dioxide R-103, R-105, R-900, R-931 mix by weight 3:2:2:1.
Embodiment 3
a kind of preparation method of astigmatism cooling thermal radiation regulation and control film
Step 1, raw material prepare
(1) far infrared ceramic powder, carbon black select commodity Masterbatch, weigh according to the composition of raw materials of astigmatism cooling thermal radiation regulation and control film and the effective constituent of two kinds of Masterbatchs, for subsequent use.
(2) other raw material is weighed according to the composition of raw materials of astigmatism cooling thermal radiation regulation and control film, for subsequent use.
Step 2, prepare master batch
Joined in single screw extrusion machine by raw material beyond load weighted for step 1 far infrared ceramic powder and carbon black and carry out fusion plastification, the material extruded from machine head port mould passes through sizing, cooling, traction, cutting action, obtains light scattering layer master batch;
The helix angle of described single screw extrusion machine is 17 °;
In described refrigerating work procedure, coolant water temperature is 28 DEG C.
Step 3, blended blown film
By master batch prepared by far infrared ceramic powder Masterbatch, carbonarius master batch and step 2, add in twin screw extruder, blended blown film, obtain astigmatism cooling thermal radiation regulation and control film; The astigmatism cooling thermal radiation regulation and control film thickness obtained is 80-140 μm.
the finished film of preparation is tested:
Carry out 780nm laser penetration test and 390nm laser penetration test to finished product astigmatism cooling thermal radiation regulation and control film prepared by the present invention, with Greece PEP black and white film for control material, test result is respectively in table 1 and table 2;
Table 1780nm laser penetration test result
From table 1, astigmatism cooling thermal radiation regulation and control film prepared by the present invention: the transmitance of 780nm laser is starkly lower than control material, and transmitance is 0.9%.
Table 2390nm laser penetration test result
From table 2, astigmatism cooling thermal radiation regulation and control film prepared by the present invention: the transmitance of 780nm laser is starkly lower than control material, and transmitance is 0.91%.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an astigmatism cooling thermal radiation regulation and control film, is characterized in that: the raw material of described regulation and control film comprises: film forming resinous material.
2. a kind of astigmatism cooling thermal radiation regulation and control film according to claim 1, is characterized in that:
Described regulation and control film, with parts by weight, comprises following feed composition:
LDPE37-320 part
LLDPE14-183 part
TPU0.9-9 part
Rutile type Titanium Dioxide 41.5-426 part
PE wax 2.7-27 part
Amine hydroxybenzene 1.2-13 part
Far infrared ceramic powder 2.4-20 part
Carbon black 0.3-2 part.
3. a kind of astigmatism cooling thermal radiation regulation and control film according to claim 1, is characterized in that:
Described regulation and control film, with parts by weight, comprises following feed composition:
LDPE31 part
LLDPE13 part
EVA7 part
TPU0.8 part
Rutile type Titanium Dioxide 42 parts
2.7 parts, PE wax
Amine hydroxybenzene 1.3 parts
Far infrared ceramic powder 1.9 parts
Carbon black 0.3 part.
4. a kind of astigmatism cooling thermal radiation regulation and control film according to claim 1, is characterized in that:
Described regulation and control film, with parts by weight, comprises following feed composition:
LDPE32 part
LLDPE12 part
PVC4 part
Rutile type Titanium Dioxide 43 parts
2.7 parts, PE wax
Amine hydroxybenzene 1.4 parts
Far infrared ceramic powder 2.7 parts
Carbon black 0.2 part.
5. a kind of astigmatism cooling thermal radiation regulation and control film according to claim 1, is characterized in that:
Described film forming resinous material is one or more in PVC, HDPE, LDPE, LLDPE.
6. a kind of astigmatism cooling thermal radiation regulation and control film according to claim 1, is characterized in that: the raw material of described regulation and control film also comprises: far infrared rays micropowder material, micro-photoabsorption micropowder material, high refractivity micropowder material.
7. a kind of astigmatism cooling thermal radiation regulation and control film according to claim 1, is characterized in that: described far infrared rays micropowder material is one or more in white carbon black, charcoal micro mist, tourmalinite micro mist, far-infrared ceramic micropowder;
Described micro-photoabsorption micropowder material is carbon black;
Described high refractivity micropowder material is one or more in Rutile type Titanium Dioxide, anatase thpe white powder, zinc sulphide micro mist, weisspiessglanz micro mist, zinc oxide ultra_fine powders, zinc sulfide white.
8., according to a kind of astigmatism cooling thermal radiation regulation and control film of claim 2-4 described in one of them, it is characterized in that:
Described Rutile type Titanium Dioxide: be made up of Du Pont titanium dioxide R-103, R-105, R-900, R-931, the weight ratio of described component is 3:2:2:1; Specific refractory power is 2.73;
Described far-infrared ceramic micropowder: all-wave radiant ratio is greater than 0.9, density is 1.2-2g/cm
3, median size is less than 0.5 μm;
Described carbon black: median size is 0.021-0.025 μm, specific area is 150 ㎡/more than g.
9. a preparation method for astigmatism cooling thermal radiation regulation and control film, is characterized in that:
Comprise raw material to prepare, prepare master batch and blended blown film step.
10. the preparation method of a kind of astigmatism cooling thermal radiation regulation and control film according to claim 9, is characterized in that:
Described blended blown film step: the film thickness of preparation is 80-140 μm;
Described prepares master batch step: comprise and raw material is added single screw extrusion machine melting, sizing, cooling, traction, cutting action;
The helix angle of described single screw extrusion machine is 17 °;
In described refrigerating work procedure, coolant water temperature is 28 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510788167.3A CN105330935B (en) | 2015-11-17 | 2015-11-17 | A kind of astigmatism cooling heat radiation regulation and control film and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510788167.3A CN105330935B (en) | 2015-11-17 | 2015-11-17 | A kind of astigmatism cooling heat radiation regulation and control film and preparation method |
Publications (2)
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| CN105330935A true CN105330935A (en) | 2016-02-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109265807A (en) * | 2018-11-22 | 2019-01-25 | 重庆瑞霆塑胶有限公司 | The feed particles formula and production method of PE film |
| CN111923536A (en) * | 2020-09-18 | 2020-11-13 | 宁波瑞凌新能源科技有限公司 | Radiation refrigeration film, method of manufacture, and article |
| CN117946470A (en) * | 2024-01-05 | 2024-04-30 | 嘉兴萃膜农业科技有限公司 | Shed film with light selectivity and preparation method thereof |
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| CN103832035A (en) * | 2014-03-11 | 2014-06-04 | 浙江德清高远塑料薄膜有限公司 | Special shading and cooling greenhouse film for culturing edible fungi |
| CN104072844A (en) * | 2014-06-17 | 2014-10-01 | 中国科学院广州能源研究所 | Diffusion agricultural film |
| CN104558765A (en) * | 2014-12-22 | 2015-04-29 | 山东农业大学 | Special light-dimming green master batch for ginger mulching film and preparation method of master batch |
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| WO1995013918A1 (en) * | 1993-11-16 | 1995-05-26 | Baxter International Inc. | Multi-layered polymer based film structure for medical grade products |
| CN103832035A (en) * | 2014-03-11 | 2014-06-04 | 浙江德清高远塑料薄膜有限公司 | Special shading and cooling greenhouse film for culturing edible fungi |
| CN104072844A (en) * | 2014-06-17 | 2014-10-01 | 中国科学院广州能源研究所 | Diffusion agricultural film |
| CN104558765A (en) * | 2014-12-22 | 2015-04-29 | 山东农业大学 | Special light-dimming green master batch for ginger mulching film and preparation method of master batch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109265807A (en) * | 2018-11-22 | 2019-01-25 | 重庆瑞霆塑胶有限公司 | The feed particles formula and production method of PE film |
| CN111923536A (en) * | 2020-09-18 | 2020-11-13 | 宁波瑞凌新能源科技有限公司 | Radiation refrigeration film, method of manufacture, and article |
| CN117946470A (en) * | 2024-01-05 | 2024-04-30 | 嘉兴萃膜农业科技有限公司 | Shed film with light selectivity and preparation method thereof |
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| CN105330935B (en) | 2017-08-25 |
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