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Astigmatic, light-absorbing, heat-radiation regulating cloth and its preparation method

A technology of thermal radiation and astigmatism, which is applied in the agricultural field, can solve the problems of black light-shielding plastic film without heat insulation function, poor shading rate, and increased ambient temperature, so as to achieve good astigmatism and heat insulation function, good astigmatism coverage, and good cooling The effect of the function

Active Publication Date: 2018-04-10
SHANDONG WEIFANG ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the black light-proof plastic film does not have the function of heat insulation, it can also increase the ambient temperature in high temperature seasons, thus affecting the production and quality of white asparagus
The above-mentioned two kinds of films have poor shielding rate against ultraviolet rays with strong penetrating power, resulting in the red head phenomenon when the white asparagus is unearthed, which seriously affects the quality of the white asparagus

Method used

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  • Astigmatic, light-absorbing, heat-radiation regulating cloth and its preparation method
  • Astigmatic, light-absorbing, heat-radiation regulating cloth and its preparation method
  • Astigmatic, light-absorbing, heat-radiation regulating cloth and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] 1. Astigmatism, light-absorbing, and heat-radiation regulating cloth is composed of three parts: the astigmatism layer, the support layer and the light-absorbing layer.

[0060] The astigmatism layer mainly contains broad-spectrum light-transmitting, low-refractive-index film-forming resin materials and high-refractive-index micropowder materials;

[0061] The support layer is mainly made of synthetic fiber cloth with high breaking strength, smooth surface, poor hygroscopicity and high infrared emissivity;

[0062] The light-absorbing layer mainly contains film-forming resin materials with high infrared absorption rate, good thermal conductivity and heat-conducting micro-powder materials, and broad-spectrum light-absorbing and infrared-emitting micro-powder materials.

[0063] 2. The astigmatism layer can be composed of rutile titanium dioxide with high transparency, good light transmission performance, low far-infrared absorption rate, good film-forming and mechanical ...

Embodiment 2

[0078] 1. Preparation of astigmatism layer:

[0079] 1. Polymers that can be used for astigmatism coating

[0080] Materials that can be used for astigmatism coatings should require low sunlight absorption rate, and the resin used should preferably contain C-O-C, C=C, -OH and other groups as little as possible. At the same time, considering the ability to combine with the support layer (fiber), the available materials are as follows: acrylic resin, polyester resin, polyurethane resin, alkyd resin, polymethacrylic resin.

[0081] Among the above materials, acrylic resin has low film-forming property, adhesiveness, light transmittance and low refractive index, and can be combined with high refractive index micropowder materials to form a high scattering ability. At the same time, the price is relatively low, preferably water-based acrylic resin.

[0082] Mixing method of titanium dioxide and coating material

[0083] There are two ways to mix titanium dioxide and coating mate...

Embodiment 3

[0138] An astigmatism, light-absorbing, heat-radiation regulating cloth and a preparation method thereof, comprising the following steps:

[0139] Step 1: Selection of base cloth

[0140] Select high-strength polyester cloth, its technical indicators are:

[0141] Mass per unit area (g / m 2 ) 200

[0142] Breaking strength (longitudinal) KN / m 6.7

[0143] Breaking strength (lateral direction) KN / m 8.0

[0144] Elongation at break (longitudinal direction)% 88

[0145] Elongation at break (transverse direction)% 82

[0146] CBR bursting strength KN 1.1

[0147] Step 2: Pretreatment of carbon black:

[0148] Use N-110 carbon black with a particle size of 11-19nm, add carbon black to 15% hydrogen peroxide, stir at room temperature, slowly raise the temperature, keep it for a period of time until the solution has no obvious bubbles, and set it aside for use. The specific process parameters are shown in Table 1. :

[0149] Table 1: Carbon black pretreatment process parameter...

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Abstract

The invention discloses light-scattering, light-absorbing and thermal-radiation regulating cloth and a preparation method. The regulating cloth comprises a light-absorbing layer and a light-scattering layer, wherein the light-absorbing layer comprises components as follows: waterborne alkyd resin, carborundum micropowder, pretreated carbon black, a coupling agent and a diluting agent; the light-scattering layer comprises components as follows: waterborne acrylic resin, titanium dioxide and a diluting agent; the light-scattering layer comprises a film-forming resin material and a high-refraction-index micropowder material; a supporting layer is synthetic fiber cloth; the light-absorbing layer comprises a film-forming resin material, a heat-conducting micropowder material as well as a light-absorbing and thermal-radiation micropowder material. The prepared light-scattering, light-absorbing and thermal-radiation regulating cloth has good light-scattering covering and light-absorbing covering functions as well as a light-scattering and thermal-insulating function, a thermal-radiation and cooling function and a light-absorbing and heating function. The cloth is mainly applied to planting of white asparagus and edible fungi having very high environmental requirements for the darkness, the temperature and the humidity and has good economic and social benefits.

Description

technical field [0001] The invention relates to an astigmatism, light-absorbing and heat-radiation regulating cloth and a preparation method thereof. The astigmatism, light-absorbing and heat-radiation regulating cloth is mainly used in the cultivation of white asparagus and edible fungus which have high requirements on the environment of darkness, temperature and humidity, and belongs to the field of agricultural technology. Background technique [0002] Facility agriculture is a facility project that uses artificial technology to change natural light and temperature conditions, create environmental factors that optimize the growth of animals and plants, and enable them to grow around the clock. It is generally divided into four categories: multi-span greenhouses, solar greenhouses, plastic greenhouses, and small arched sheds (shading sheds). At present, the area of ​​my country's facility agriculture has accounted for more than 85% of the world's total area, of which more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/51D06M11/74D06M11/77D06M15/263D06M11/46A01G9/14D06M101/32
CPCY02A40/25
Inventor 魏永阳李田于继庆厉广辉张培张品文
Owner SHANDONG WEIFANG ACADEMY OF AGRICULTURAL SCIENCES
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