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Technology for making water-saving infiltration underground pipe

A technology of seepage irrigation pipe and weight ratio, which is applied to botanical equipment and methods, tubular objects, watering devices, etc., can solve the problems not given in the examples, and achieve the effects of uniform water seepage rate and good aging resistance

Inactive Publication Date: 2003-07-09
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 9710567.1 discloses a technology of "agricultural rubber and plastic seepage irrigation pipe", but the application does not provide an embodiment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Rubber powder: 48, PE: 48; paraffin wax: 0.1; dinitrosopentamethylenetetramine: 0.4; zinc oxide: 0.2; barium stearate: 0.2, magnesium hydroxide: 3.1. The above materials are mixed evenly by a high-speed mixer and then added to a single-screw extruder for extrusion molding. The surface of the extrudate is relatively smooth, can be drawn and formed, and can seep water. The tensile breaking strength of the obtained seepage irrigation pipe is 4.5Mpa, and the elongation at break is 140%. , No cracks when folded in half at low temperature at -30°C, no cracks when freeze-thawed at -40°C, and the distribution range of micropores in the tube wall is 0.01-0.4mm.

Embodiment 2

[0009] Example 2: rubber powder 79, PE: 18.5; liquid paraffin: 0.5; stearic acid: 0.5, azodicarbonamide: 0.05; zinc oxide: 0.45; calcium carbonate: 1.0. When the mixture is extruded, the current of the main machine is relatively large, the surface of the extrudate is rough, it can be drawn and shaped, and it can seep water. The tensile breaking strength of the obtained permeable irrigation pipe is 3.8Mpa, the elongation at break is 80%, and there is no crack when it is folded in half at a low temperature of -30°C. Freeze-thaw at -40°C without cracks, and the micropore diameter distribution range in the tube wall is 0.01-0.3mm.

Embodiment 3

[0011] Rubber powder: 60, PE: 35; paraffin wax: 0.1; N, N'-ethylene bisstearamide: 0.3; 4,4'-oxybisbenzenesulfonyl hydrazide: 0.5; manganese oxide: 0.2; stearic acid Barium: 0.1, calcium carbonate: 3.8. When extruding, the load of the extruder is not large, the surface of the extruded product is relatively rough, can be drawn and shaped, and can seep water. The tensile breaking strength of the obtained permeable irrigation pipe is 3.9Mpa, the elongation at break is 95%, and there is no crack when folded in half at a low temperature of -30°C. Freeze-thaw at -40°C without cracks, and the micropore diameter distribution range in the tube wall is 0.01-0.3mm.

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Abstract

An underground aperture pipe for water-saving infiltrating irrigation is made up of used rubber (48-79 wt.%) and polyethylene (PE) (18.5-48 wt.%) through pulverizing the used rubber, stirring powdered rubber and polyethylene at high stirring speed while heating to 90-100 deg.C, adding lubricant, foamer, foaming promotor and nucleator, feeding to single-screw extruder, extruding out at 145-190 deg.C, shape fixation and cooling. It features 3.8-4.3 MPa of tensile strength, 80-140% of extension at break, no cracking at -30--40 deg.C, and 0.01-0.4 mm of aperture diameter.

Description

technical field [0001] The invention belongs to a preparation method of an underground water-saving seepage irrigation pipe. Background technique [0002] How well all plants grow has a direct and very important relationship with the amount of water in the soil. In our country, flood irrigation is usually used for farmland, fruit trees, greenhouses, urban green spaces, etc., which causes a great waste of water resources. As a result, many new water-saving irrigation technologies have emerged, such as sprinkler irrigation, drip irrigation, micro-spraying, etc. These The technology still belongs to above-ground irrigation. To get enough water for plants, the soil at the roots of the plants must be completely moistened, and this part of water is easily lost or evaporated under the action of the external environment, which will still cause waste of water resources. It will also cause the inorganic salts contained in the water to precipitate on the surface of the soil. Over time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G25/00B29D23/00
Inventor 王国英李壮崔毅黄燕孙淑华田洪英
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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