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Diffuse scattering film, preparation method thereof and use thereof

A diffuse scattering and thin film technology, which is applied in the direction of botanical equipment and methods, applications, climate change adaptation, etc., can solve the problem of not fully reflecting the effect of diffuse scattering film, ineffective light uniformity and sun protection, film light transmittance and fog Low light intensity and other problems, to achieve the effect of reducing the intensity of direct light, reducing the focal edge phenomenon, and improving the haze of the film

Active Publication Date: 2018-09-25
JIANGSU YONGXIN MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the light transmittance and haze of the film obtained by this method are low, which directly affects the temperature in the greenhouse and the light received by the plants, which is not conducive to the growth of crops.
However, the low haze cannot effectively scatter direct light, so it cannot effectively uniform light and prevent sun damage, and cannot fully reflect the proper function of the diffuse scattering film.

Method used

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  • Diffuse scattering film, preparation method thereof and use thereof
  • Diffuse scattering film, preparation method thereof and use thereof
  • Diffuse scattering film, preparation method thereof and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This embodiment discloses a diffuse scattering film with a thickness of 80 μm. The components of the diffuse scattering film and the contents of each component are as follows:

[0050]

[0051] The above-mentioned polyethylene is a film-grade high-transparency polyethylene grade: 2420D, produced by CNOOC Shell, with a refractive index of 1.45; the above-mentioned organic light scattering particles are made of polysiloxane (specifically, silicone elastomer) with a particle size of 2.0 μm, which is Dow Chemical company product, grade: 30-424, refractive index 1.41.

[0052] The specific production method is as follows: first mix 2 parts of organic light scattering particles 30-424 with 8 parts of film-grade high-transparency polyethylene 2420D and 0.5 parts of light stabilizer and antioxidant, and then make light-scattering masterbatch through a screw extruder. Then add the light-scattering masterbatch to the remaining film-grade high-transparency polyethylene and mix ...

Embodiment 2

[0054] This embodiment discloses a diffuse scattering film with a thickness of 60 microns. The composition and ratio of the diffuse scattering film are as follows:

[0055]

[0056] The above-mentioned polyethylene is a film-grade high-transparency polyethylene grade: 1018CA, produced by ExxonMobil Corporation of the United States, with a refractive index of 1.45; the above-mentioned organic light-scattering particles are polysiloxane with a particle size of 1.66 microns (specifically, polymethylsilsesquioxane Alkanes) material, Momentive products, grade: Tospeal 120, refractive index 1.43.

[0057] The specific production method is: first mix 2 parts of organic light scattering particles Tospeal 120 with 8 parts of film-grade high-transparency polyethylene 1018CA and 0.5 parts of light stabilizer and antioxidant, and extrude through a screw extruder to obtain light scattering masterbatch , and then add the light-scattering masterbatch to the remaining film-grade high-trans...

Embodiment 3

[0059] This embodiment discloses a diffuse scattering film with a thickness of 60 microns. The composition and ratio of the diffuse scattering film are as follows:

[0060]

[0061] The above-mentioned polyethylene is a film-grade high-transparency polyethylene grade: 1018CA, produced by ExxonMobil Corporation of the United States, with a refractive index of 1.45; the above-mentioned organic positive spherical light-scattering particles are polysiloxane with a particle size of 1.66 microns (specifically polymethyl sesqui Silicone) material, Momentive products, brand: Tospeal 120, refractive index 1.43. The inorganic powder is talcum powder product of Liaoning Xinda Company, brand name: SD-9689, particle size: 4.0 microns.

[0062] The specific production method is: first mix 1 part of organic light scattering particles Tospeal 120, 1 part of talcum powder SD-9689, 8 parts of film-grade high-transparency polyethylene 1018CA, and 0.5 parts of light stabilizer and antioxidant,...

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Abstract

The present invention provides a diffuse scattering film, a preparation method thereof and use thereof. The film includes a transparent polymer and organic light scattering particles uniformly distributed in the transparent polymer. The mass of the organic light scattering particles is not more than 5 wt% of the mass of the transparent polymer. The diffuse scattering film can effectively prevent leaves of crops in a greenhouse from being burnt when the light is too strong while maintaining high light transmittance and maintaining excellent illumination, and can ensure that the back of leaves can receive diffused light emitted by the film, thus increasing the photosynthesis efficiency of crops.

Description

technical field [0001] The invention relates to the field of optics, in particular to a diffuse scattering film and its preparation method and application. Background technique [0002] Most of the films in the prior art focus on high light transmission and overemphasize the luminous flux of direct light. High luminous flux certainly helps to increase the temperature in the greenhouse and is good for the growth of crops, but this tendency ignores the side effects of direct light , also ignores the benefits of diffuse light to crops. Diffuse scattering films are widely used in areas with developed agriculture, such as Israel, and have a high penetration rate in Europe. However, it has just started in China, and more and more film experts and film companies are gradually realizing the importance of diffuse scattering films. [0003] The high-quality diffuse scattering film can effectively prevent the leaves of the crops in the greenhouse from being burned when the light is to...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L27/06C08L83/04C08L25/06C08K3/34C08K3/26C08J5/18A01G9/14
CPCA01G9/1438C08J5/18C08J2323/06C08J2323/08C08J2327/06C08J2423/08C08J2425/06C08J2483/04C08K3/34C08K2003/265Y02A40/25
Inventor 姜文
Owner JIANGSU YONGXIN MATERIAL TECH CO LTD
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