CN111995878A - Light conversion film and preparation method thereof - Google Patents
Light conversion film and preparation method thereof Download PDFInfo
- Publication number
- CN111995878A CN111995878A CN202010919409.9A CN202010919409A CN111995878A CN 111995878 A CN111995878 A CN 111995878A CN 202010919409 A CN202010919409 A CN 202010919409A CN 111995878 A CN111995878 A CN 111995878A
- Authority
- CN
- China
- Prior art keywords
- parts
- light conversion
- light
- resin
- conversion film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
- A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2400/00—Characterised by the use of unspecified polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention discloses a light conversion film and a preparation method thereof, wherein the formula of the light conversion film comprises 90-93 parts of matrix resin, 3-5 parts of light conversion agent, 0.8-1.5 parts of light stabilizer, 0.3-1 part of antioxidant and 0.8-2 parts of opening agent by weight, and the light conversion film is prepared by adopting a mode of primary mixing and then mixing, and then processing and forming.
Description
Technical Field
The invention belongs to the technical field of light conversion film processing, and particularly relates to a light conversion film and a preparation method thereof.
Background
In the agricultural technical field, a greenhouse film is usually selected for the requirement of crop heat preservation, people often think that light transmission and heat preservation are performed when selecting the greenhouse film, but in continuous cloudy days, the light transmission greenhouse film is also useless, how to increase limited sunlight is achieved, the growth of plants cannot be influenced even in cloudy days, and the seemingly impossible phenomena are solved due to the appearance of the light conversion film.
The greenhouse crops can not grow away from the energy provided by sunlight, the sunlight consists of light with the colors of red, orange, yellow, green, blue and purple, the energy contained in different light is different, the growth effect on the crops is different, particularly the influence on the photosynthesis is different, the blue light is favorable for promoting the growth of leaves, the red light is the favorite chlorophyll and is most effective on the photosynthesis of the leaves, the red light can promote the plants to bloom and bear fruits, and the greenhouse crops are favorable for the formation of fruits and particularly suitable for tomatoes and strawberries.
The light conversion film is a functional film capable of converting light wave length, and can convert some lights which are harmful to plants and can not cause plant photosynthesis into lights capable of causing plant photosynthesis, and the processing of the light conversion film is a greenhouse film made by adding light conversion functional master batch into the materials for producing the common greenhouse film, when sunlight penetrates through the light conversion film, ultraviolet rays (which can burn plant tissues) and green rays (which can be reflected by the plants and lost) in the film are absorbed and converted by the light conversion master batch to release blue light and red light which are beneficial to the growth of the plants, so that the blue and red spectral components in the greenhouse are increased, and the light energy utilization rate is improved.
The existing light conversion film has the functions of high strength, aging resistance, good light transmission, heat preservation and the like, is a novel high-tech functional film, is diversified in formula and processing mode based on the numerous advantages of the light conversion film, and adopts the form of a film body and a light conversion film layer composite film, and also adopts the form of adding a light conversion master batch into raw materials.
Disclosure of Invention
In view of the above problems, the main object of the present invention is to design a light conversion film and a method for making the same, wherein a transparent resin is used in combination with a red resin or a blue resin, which is beneficial to plants, to convert most of the sunlight into colored red light or blue light, and some of the light which cannot be converted is converted by adding a light conversion agent to a matrix resin, so as to convert the sunlight into light which is beneficial to plant growth and flowering and fruiting to the maximum extent.
In order to achieve the purpose, the invention adopts the following technical scheme:
the light conversion film comprises, by weight, 90-93 parts of matrix resin, 3-5 parts of a light conversion agent, 0.8-1.5 parts of a light stabilizer, 0.3-1 part of an antioxidant and 0.8-2 parts of an opening agent.
As a further description of the present invention, the matrix resin includes a transparent resin and a red resin, in parts by weight: 60-70 parts of transparent resin and 20-33 parts of red resin.
As a further description of the present invention, the matrix resin includes a transparent resin and a blue resin, in parts by weight: 60-70 parts of transparent resin and 20-33 parts of blue resin.
In the scheme of the invention, two different matrix resins are adopted, namely the matching of the transparent resin and the red resin and the matching of the transparent resin and the blue resin, and the red light and the blue light are beneficial to the production of plants and promote the blossoming and fruiting of the plants.
As a further description of the invention, the light conversion film comprises 60 parts of transparent resin, 33 parts of red resin, 3 parts of light conversion agent, 0.8 part of light stabilizer, 0.3 part of antioxidant and 0.8 part of opening agent by weight.
As further description of the invention, the light conversion film comprises 65 parts by weight of transparent resin, 26 parts by weight of red resin, 4 parts by weight of light conversion agent, 1.2 parts by weight of light stabilizer, 0.6 part by weight of antioxidant and 1.3 parts by weight of opening agent.
As further description of the invention, the light conversion film comprises 70 parts of transparent resin, 20 parts of red resin, 5 parts of light conversion agent, 1.5 parts of light stabilizer, 1 part of antioxidant and 2 parts of opening agent by weight.
As further description of the invention, the light conversion film comprises 60 parts of transparent resin, 33 parts of blue resin, 3 parts of light conversion agent, 0.8 part of light stabilizer, 0.3 part of antioxidant and 0.8 part of opening agent in parts by weight.
As further description of the invention, the light conversion film comprises 65 parts by weight of transparent resin, 26 parts by weight of blue resin, 4 parts by weight of light conversion agent, 1.2 parts by weight of light stabilizer, 0.6 part by weight of antioxidant and 1.3 parts by weight of opening agent.
As further description of the invention, the light conversion film comprises 70 parts of transparent resin, 20 parts of blue resin, 5 parts of light conversion agent, 1.5 parts of light stabilizer, 1 part of antioxidant and 2 parts of opening agent by weight.
As a further description of the present invention, a method of making a light converting film comprises the steps of:
(1) uniformly mixing the matrix resin, the light conversion agent and the opening agent according to the proportion to form a mixture A;
(2) adding a light stabilizer and an antioxidant into the mixture A, and then fully mixing to form a mixture B;
(3) adding the mixture B into an extruder, heating and melting to extrude a thick sheet, and further forming.
In the scheme, the preparation method of the light conversion film formula is disclosed, the mixing is divided into continuous steps, and the main purpose is to uniformly mix the formula, so that the phenomenon that the color of the light conversion film is not uniform and the converted light is not uniform due to nonuniform color resin mixing is avoided.
Compared with the prior art, the invention has the technical effects that:
the invention provides a light conversion film and a preparation method thereof, which adopts two different matrix resins and adopts an embodiment formed by the two matrix resins, wherein the two matrixes are respectively as follows: the matching of the transparent resin and the red resin and the matching of the transparent resin and the blue resin bring benefits to the growth of plants due to the blue light and the red light, so that most of light in sunlight is converted into the red light or the blue light through the color of the light conversion film, and light which cannot be converted in the sunlight is further converted in a mode of adding the light conversion agent in the matrix resin, so that the sunlight is converted into light favorable for the growth of plants, flowering and fruiting to the maximum extent, and the light conversion efficiency and the light conversion effect of the light conversion film are improved.
Detailed Description
The present invention is described in detail below:
the light conversion film comprises, by weight, 90-93 parts of matrix resin, 3-5 parts of a light conversion agent, 0.8-1.5 parts of a light stabilizer, 0.3-1 part of an antioxidant and 0.8-2 parts of an opening agent.
The light conversion agent in the invention can be the light conversion agent disclosed in the prior art, such as: ca3B5010C 1: eu2+, etc., the light conversion agent functions to convert ultraviolet rays, etc., harmful to plant growth in sunlight, into red orange light, which is advantageous to plant growth.
Light stabilizer: the light degradation and light aging of the high polymer material under light radiation, especially ultraviolet light, can be prevented or slowed down, the service life of the outdoor light conversion film can be greatly prolonged, and zinc oxide, titanium dioxide and the like are generally adopted.
Antioxidant: the resin polymer is prevented from being oxidized in the extruder due to high temperature. Oxidation can cause cross-linking or chain scission of the polymer. Excessive crosslinking can result in an increase in the molecular weight of the polymer, which cannot be melted to form coke lumps or crystal points; chain scission, which results in a decrease in the molecular weight of the polymer and thus a decrease in the performance of the light conversion film, is generally used.
The opening agent is also called slipping agent, anti-blocking agent, etc., the opening agent has good solubility with resin, keeps the high gloss of the film, and is divided into organic opening agent and inorganic opening agent, the organic opening agent is mainly oleamide, the inorganic opening agent is mainly talcum powder, diatomite, silicon dioxide, etc., and the largest amount of silicon dioxide is used.
The matrix resin comprises transparent resin and red resin, and the weight parts are as follows: 60-70 parts of transparent resin and 20-33 parts of red resin.
In addition, the matrix resin can be prepared by other methods, such as: blue light is also beneficial to the growth of plants, so the matrix resin comprises a transparent resin and a blue resin, and the weight parts of the matrix resin are as follows: 60-70 parts of transparent resin and 20-33 parts of blue resin.
In the scheme of the invention, two different matrix resins are adopted, namely the matching of the transparent resin and the red resin and the matching of the transparent resin and the blue resin, and the red light and the blue light are beneficial to the production of plants and promote the blossoming and fruiting of the plants.
In the scheme disclosed by the invention, the preparation method of the light conversion film comprises the following steps:
(1) uniformly mixing the matrix resin, the light conversion agent and the opening agent according to the proportion to form a mixture A;
(2) adding a light stabilizer and an antioxidant into the mixture A, and then fully mixing to form a mixture B;
(3) adding the mixture B into an extruder, heating and melting to extrude a thick sheet, and further forming.
In the scheme, the preparation method of the light conversion film formula is disclosed, the mixing is divided into continuous steps, and the main purpose is to uniformly mix the formula, so that the phenomenon that the color of the light conversion film is not uniform and the converted light is not uniform due to nonuniform color resin mixing is avoided.
Of course, the colored resin includes red and blue resins, but is not limited to red and blue resins, and other colored resins that are beneficial to plant growth can be used.
The invention provides a light conversion film and a preparation method thereof, which adopts two different matrix resins and adopts an embodiment formed by the two matrix resins, wherein the two matrixes are respectively as follows: the matching of the transparent resin and the red resin and the matching of the transparent resin and the blue resin bring benefits to the growth of plants due to the blue light and the red light, so that most of light in sunlight is converted into the red light or the blue light through the color of the light conversion film, and light which cannot be converted in the sunlight is further converted in a mode of adding the light conversion agent in the matrix resin, so that the sunlight is converted into light favorable for the growth of plants, flowering and fruiting to the maximum extent, and the light conversion efficiency and the light conversion effect of the light conversion film are improved.
In the scheme of the invention, the method is specifically divided into a plurality of examples according to different matrix resins adopted in the formula, and the detailed formula of the examples is as follows:
example 1:
the light converting film is prepared with transparent resin 60 weight portions, red resin 33 weight portions, light converting agent 3 weight portions, light stabilizer 0.8 weight portions, antioxidant 0.3 weight portions, and opening agent 0.8 weight portions.
Example 2:
the light converting film is prepared with transparent resin 65 weight portions, red resin 26 weight portions, light converting agent 4 weight portions, light stabilizer 1.2 weight portions, antioxidant 0.6 weight portions and opening agent 1.3 weight portions.
Example 3:
the light converting film is prepared with transparent resin 70 weight portions, red resin 20 weight portions, light converting agent 5 weight portions, light stabilizer 1.5 weight portions, antioxidant 1 weight portion and opening agent 2 weight portions.
Example 4:
the light converting film is prepared with transparent resin 60 weight portions, blue resin 33 weight portions, light converting agent 3 weight portions, light stabilizer 0.8 weight portions, antioxidant 0.3 weight portions, and opening agent 0.8 weight portions.
Example 5:
the light converting film is prepared with transparent resin 65 weight portions, blue resin 26 weight portions, light converting agent 4 weight portions, light stabilizer 1.2 weight portions, antioxidant 0.6 weight portions and opening agent 1.3 weight portions.
Example 6:
the light converting film is prepared with transparent resin 70 weight portions, blue resin 20 weight portions, light converting agent 5 weight portions, light stabilizer 1.5 weight portions, antioxidant 1 weight portion and opening agent 2 weight portions.
Through the formula of the light conversion film disclosed in the embodiment, the prepared light conversion film is compared through the temperature speed in the greenhouse after a greenhouse test is carried out, and the comparison effect is as follows:
normal sunny winter (normal morning 0 ℃, 10 ℃ at noon for example):
example 1: at 9 am, 26 pm two o' clock and 13 pm at night.
Example 2: ten o ' clock in the morning, 23 o ' clock in the afternoon and 15 o ' clock in the evening.
Example 3: ten o ' clock in the morning, 25 o ' clock in the afternoon and seven o ' clock in the evening at 14 ℃.
Example 4: at 11 deg.C in the morning, 27 deg.C in the afternoon, and 10 deg.C in the evening.
Example 5: 12 ℃ in the morning, 24 ℃ in the afternoon and seven ℃ in the evening.
Example 6: at 7 am, 22 pm two o' clock and 10 m.p..
The existing light conversion film: ten o ' clock in the morning, 18 o ' clock in the afternoon and seven o ' clock in the evening, 8 ℃.
According to the analysis, compared with the existing greenhouse film, the light conversion film prepared by the formula disclosed by the invention can maximally utilize and convert sunlight, has a better light conversion effect than the existing light conversion film, and is more suitable for planting plants in winter.
The above embodiments are only for illustrating the technical solutions of the present invention and are not limited, and other modifications or equivalent substitutions made by the technical solutions of the present invention by the ordinary skilled person in the art are included in the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A light conversion film and a preparation method thereof are characterized in that: the light conversion film comprises, by weight, 90-93 parts of matrix resin, 3-5 parts of a light conversion agent, 0.8-1.5 parts of a light stabilizer, 0.3-1 part of an antioxidant and 0.8-2 parts of an opening agent.
2. A light conversion film and a method for producing the same according to claim 1, characterized in that: the matrix resin comprises transparent resin and red resin, and the weight parts are as follows: 60-70 parts of transparent resin and 20-33 parts of red resin.
3. A light conversion film and a method for producing the same according to claim 1, characterized in that: the matrix resin comprises transparent resin and blue resin, and the weight parts are as follows: 60-70 parts of transparent resin and 20-33 parts of blue resin.
4. A light conversion film and a method for producing the same according to claim 2, characterized in that: the formula of the light conversion film comprises, by weight, 60 parts of transparent resin, 33 parts of red resin, 3 parts of light conversion agent, 0.8 part of light stabilizer, 0.3 part of antioxidant and 0.8 part of opening agent.
5. A light conversion film and a method for producing the same according to claim 2, characterized in that: the formula of the light conversion film comprises 65 parts by weight of transparent resin, 26 parts by weight of red resin, 4 parts by weight of light conversion agent, 1.2 parts by weight of light stabilizer, 0.6 part by weight of antioxidant and 1.3 parts by weight of opening agent.
6. A light conversion film and a method for producing the same according to claim 2, characterized in that: the formula of the light conversion film comprises, by weight, 70 parts of transparent resin, 20 parts of red resin, 5 parts of light conversion agent, 1.5 parts of light stabilizer, 1 part of antioxidant and 2 parts of opening agent.
7. A light conversion film and a method for producing the same according to claim 3, characterized in that: the light conversion film comprises, by weight, 60 parts of transparent resin, 33 parts of blue resin, 3 parts of light conversion agent, 0.8 part of light stabilizer, 0.3 part of antioxidant and 0.8 part of opening agent.
8. A light conversion film and a method for producing the same according to claim 3, characterized in that: the formula of the light conversion film comprises 65 parts of transparent resin, 26 parts of blue resin, 4 parts of light conversion agent, 1.2 parts of light stabilizer, 0.6 part of antioxidant and 1.3 parts of opening agent by weight.
9. A light conversion film and a method for producing the same according to claim 3, characterized in that: the formula of the light conversion film comprises, by weight, 70 parts of transparent resin, 20 parts of blue resin, 5 parts of light conversion agent, 1.5 parts of light stabilizer, 1 part of antioxidant and 2 parts of opening agent.
10. A method for producing a light conversion film according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
(1) uniformly mixing the matrix resin, the light conversion agent and the opening agent according to the proportion to form a mixture A;
(2) adding a light stabilizer and an antioxidant into the mixture A, and then fully mixing to form a mixture B;
(3) adding the mixture B into an extruder, heating and melting to extrude a thick sheet, and further forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010919409.9A CN111995878A (en) | 2020-09-04 | 2020-09-04 | Light conversion film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010919409.9A CN111995878A (en) | 2020-09-04 | 2020-09-04 | Light conversion film and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111995878A true CN111995878A (en) | 2020-11-27 |
Family
ID=73468365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010919409.9A Pending CN111995878A (en) | 2020-09-04 | 2020-09-04 | Light conversion film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111995878A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418094A (en) * | 2008-12-05 | 2009-04-29 | 严涛 | Reversible thermochromic multifunctional agricultural plastic film at normal temperature and production method thereof |
| CN107556611A (en) * | 2017-09-01 | 2018-01-09 | 杭州异客科技有限公司 | It is a kind of suitable for conversion film of vegetables greenhouse cultivation and preparation method thereof |
| CN109385025A (en) * | 2018-09-25 | 2019-02-26 | 广东华科新材料研究院有限公司 | A kind of agricultural double-energy light-converting film and preparation method thereof |
-
2020
- 2020-09-04 CN CN202010919409.9A patent/CN111995878A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418094A (en) * | 2008-12-05 | 2009-04-29 | 严涛 | Reversible thermochromic multifunctional agricultural plastic film at normal temperature and production method thereof |
| CN107556611A (en) * | 2017-09-01 | 2018-01-09 | 杭州异客科技有限公司 | It is a kind of suitable for conversion film of vegetables greenhouse cultivation and preparation method thereof |
| CN109385025A (en) * | 2018-09-25 | 2019-02-26 | 广东华科新材料研究院有限公司 | A kind of agricultural double-energy light-converting film and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王建书等: "《施农业知识读本》", 28 February 2010, 中国社会出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102250410A (en) | Shed film special for ginger | |
| CN112840915B (en) | Coating type light-dimming dustproof high-heat-preservation long-acting dripping fog-dissipation greenhouse film and preparation method thereof | |
| CN104558798B (en) | A kind of special red master batch of anti-aging light modulation of solanaceous vegetables canopy film and preparation method thereof | |
| CN102161249A (en) | Light-splitting spectrum greenhouse film and preparation method thereof | |
| CN118120500B (en) | Method for regulating and controlling growth of capsicum plants by utilizing light quality combination | |
| CN104558799B (en) | A kind of special green master batch of anti-aging light modulation of ginger canopy film and preparation method thereof | |
| CN111621077A (en) | Light conversion master batch, preparation method thereof and light conversion agricultural film prepared from light conversion master batch | |
| CN111995878A (en) | Light conversion film and preparation method thereof | |
| CN115517125B (en) | Coating type polyolefin light-conversion dustproof high-heat-preservation long-acting drip defogging greenhouse film and preparation method thereof | |
| CN110112128A (en) | A kind of preparation and application of full spectrum intelligence plant lamp | |
| CN102585340B (en) | Production method of plastic greenhouse film with heat insulating function | |
| CN112921435A (en) | Agricultural light conversion sunshade net and preparation method thereof | |
| CN104082069A (en) | Light blue film for grape cultivation | |
| CN115895095B (en) | Aggregation-induced emission light conversion material and preparation method and application thereof | |
| CN208080006U (en) | A kind of three-layer co-extruded polyethylene longevity stream drop high-strength insulation awning film | |
| CN112358641B (en) | Heat-insulation greenhouse film and preparation method thereof | |
| CN106633295A (en) | Master batch with light conversion function for preparing Chinese chive greenhouse thin film | |
| CN107828230A (en) | It is a kind of to turn light transparent plastic canopy film and preparation method thereof for green cucumber | |
| CN105332091B (en) | A kind of preparation method of astigmatism cooling heat radiation prevention net | |
| CN110256755B (en) | Greenhouse colored film based on plant growth characteristics | |
| CN103214725B (en) | The long-acting mulch film of a kind of special resistance to oxidation of sugarcane | |
| CN107722330B (en) | Preparation method of efficient heat-preservation agricultural plastic greenhouse film | |
| CN1300235C (en) | Agricultural mulching film of multifunctional interlaced color combination | |
| KR100761942B1 (en) | Optically active inorganic additive for light transforming greenhouse film and the greenhouse film comprising the additive | |
| CN113580613A (en) | Preparation method of novel agricultural light conversion film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201127 |