A preparation method of astigmatism cooling thermal radiation protection net

A heat radiation and protective net technology, applied in the agricultural field, can solve the problems of harsh environmental requirements, shading, heat insulation, cooling can not be taken into account at the same time, single function, etc., to reduce investment and use costs, reduce the incidence of diseases and insect pests, improve quality and Yield effect

Active Publication Date: 2017-10-10
SHANDONG WEIFANG ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual agricultural production, due to the technical and structural constraints of the black sunshade net, its shading and cooling effects cannot meet the needs of modern agricultural production at the same time.
For example, spinach is a cold-resistant and heat-resistant plant. Summer planting has strict environmental requirements. Using traditional sunshade nets to achieve cooling requires a high shading rate to meet the cooling needs. However, too much sunshade net shading will affect the normal photosynthesis of spinach. function, affecting the accumulation of nutrients in plants
[0004] In short, the existing sunshade net technology has the following defects: (1) under sunlight, the heat transfer is fast, and the temperature of the sunshade net itself is very high; (2) ordinary sunshade nets exchange more heat with the air or surrounding objects; it is easy to increase the air temperature around the net; (3) The far-infrared radiation produced by the surface of the black sunshade net is high; (4) The function is single, and shading, heat insulation, and cooling cannot be taken into account at the same time
[0005] Therefore, there is no ideal thermal radiation protection net in agricultural production.

Method used

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  • A preparation method of astigmatism cooling thermal radiation protection net

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Example 1 A thermal radiation protection net for astigmatism and cooling

[0056] The raw materials for the preparation of the astigmatism cooling thermal radiation protection net mainly include: film-forming resin materials, high refractive index micropowder materials, and far-infrared micropowder materials.

[0057] (1) The broad-spectrum light-transmitting, low-refractive-index resin material:

[0058] Film-forming resin materials can be selected from PVC, HDPE, LDPE, LLDPE and other resins;

[0059] Low-density polyethylene (LDPE) is preferred, with a density of 0.915-0.940g / cm 3 , the refractive index is 1.51, and the far-infrared transmittance in the 7.0~13.0μm band is high, which is similar to the far-infrared light-transmitting body.

[0060] (2) The high refractive index micropowder material:

[0061] Rutile titanium dioxide (refractive index 2.73), anatase titanium dioxide (refractive index 2.55), zinc sulfide fine powder (refractive index 2.37), antimony o...

Embodiment 2

[0066] Example 2 A preparation method of astigmatism cooling thermal radiation protection net

[0067] Step 1. Prepare masterbatch

[0068] (1) Masterbatch formula

[0069] The weight ratio of the masterbatch raw materials of the astigmatism cooling thermal radiation protection net is:

[0070] Rutile Titanium Dioxide 426 copies

[0071]LDPE 299 parts

[0072] LLDPE 212 parts

[0073] Oleamide 13 parts

[0074] PE wax 27 parts

[0075] Far-infrared ceramic powder 22 parts

[0076] Silane coupling agent 1 part

[0077] The rutile titanium dioxide in the masterbatch formula of the above-mentioned astigmatism cooling thermal radiation protection net is: DuPont titanium dioxide R-103, R-105, R-900, R-931 mixed in a weight ratio of 3:2:2:1 .

[0078] (2) Preparation of astigmatism masterbatch

[0079] Weigh LDPE, LLDPE, rutile titanium dioxide, PE wax, oleic acid amide, and silane coupling agent according to the masterbatch formula of the astigmatism cooling heat radia...

Embodiment 3

[0092] Example 3 A preparation method of astigmatism cooling thermal radiation protection net

[0093] Step 1. Prepare masterbatch

[0094] (1) Masterbatch formula

[0095] The weight ratio of the masterbatch raw materials of the astigmatism cooling thermal radiation protection net is as follows:

[0096] LDPE 24.8 parts

[0097] EVA 5 parts

[0098] LLDPE 21 parts

[0099] TPU 0.8 parts

[0100] 42 parts of rutile titanium dioxide

[0101] PE wax 2.7 parts

[0102] Oleic acid amide 1.3 parts

[0103] Far-infrared ceramic powder 2.2 parts

[0104] Silane coupling agent 0.2 parts

[0105] The rutile titanium dioxide in the masterbatch formula of the above-mentioned astigmatism cooling thermal radiation protection net is: DuPont titanium dioxide R-103, R-105, R-900, R-931 mixed in a weight ratio of 3:2:2:1 .

[0106] (2) Preparation of astigmatism masterbatch

[0107] Weigh LDPE, LLDPE, rutile titanium dioxide, PE wax, oleic acid amide, EVA, TPU, silane coupling agen...

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Abstract

The invention discloses a preparation method of an astigmatism cooling thermal radiation protection net. The preparation method includes the step of preparing a masterbatch, and also includes a fiber preparation step and a drawing molding step. The masterbatch of the protective net includes components: rutile titanium dioxide, LDPE, LLDPE, oleic acid amide, PE wax, far-infrared ceramic powder, and silane coupling agent. The astigmatism cooling thermal radiation protective net prepared by the invention has its own temperature lower by 5-32 DEG C. than that of the commonly used black sunshade net under the condition of full sunshine.

Description

technical field [0001] The invention relates to a preparation method of an astigmatism cooling heat radiation protection net. The astigmatism cooling heat radiation protection net is suitable for shading and cooling agricultural production such as summer vegetable cultivation, flower planting, forest fruit seedling cultivation, and animal husbandry, and belongs to the field of agricultural technology. Background technique [0002] Shade net, also known as shading net, is a new type of protection covering material for agriculture, forestry, animal husbandry and fishery that has been promoted in my country for more than 10 years. After covering in summer, it can play a certain role in blocking light, rain, moisturizing and cooling. There is also a certain effect of heat preservation and humidification after covering in winter and spring. At present, the agricultural sunshade net is made of polyolefin as the main raw material, which is woven by wire drawing. When manufacturing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/06D01F8/16D01F1/10
Inventor 魏永阳邓树娥林云弟高静
Owner SHANDONG WEIFANG ACADEMY OF AGRICULTURAL SCIENCES
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