Microgravity infiltrating irrigation tube, its preparation process and application in greenhouse

A technology for greenhouses and infiltration irrigation pipes is applied in the fields of application, botanical equipment and methods, horticulture, etc., and can solve the problems of restricting the development of crop roots, inconvenient field operations of equipment, and easy clogging of irrigation equipment. The effect of low production cost and strong practicability

Inactive Publication Date: 2005-11-09
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the water-saving irrigation technologies used in my country's farmland are pipe irrigation and micro-sprinkler irrigation. The maintenance cost is high, among which, the easy blockage of the irrigation equipment in the micro and sprinkler irrigation is the biggest problem
The use of micro-spray irrigation in farmland can also easily cause salt accumulation and limit the development of crop roots, especially in the flowering period of melons, fruits and vegetables, which will affect pollination and reduce production

Method used

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  • Microgravity infiltrating irrigation tube, its preparation process and application in greenhouse
  • Microgravity infiltrating irrigation tube, its preparation process and application in greenhouse
  • Microgravity infiltrating irrigation tube, its preparation process and application in greenhouse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Raw material components and weight percentages of microgravity irrigation pipe: recycled rubber powder (particle size ≤0.25mm) 65% (w / w), high-pressure polyethylene 23% (w / w), low-pressure polyethylene 5 % (w / w), polyester 3.5% (w / w), blowing agent 0.7% (w / w), polyethylene wax 0.3% (w / w), barium stearate 0.3% (w / w) , carbon black 0.2% (w / w), calcium carbide 2%;

[0039] Such as figure 1 The schematic diagram of the microgravity permeation irrigation pipe production equipment shown in the figure, the above ingredients are put into the mixing tank 1 of the mixer according to the proportion and stirred evenly, the temperature is raised to 90°C, preheated and plasticized, continuously stirred for 30 minutes, and the temperature is lowered to 80°C The following materials are fed into the extruder 4 from the hopper 3, controlled by the power box 2, and melted and plasticized at 210°C, extruded through the mold 6, inflated by the air pump 5, exhausted by the air pump 7, and c...

Embodiment 2

[0041] The difference from Example 1 is:

[0042] Take 70% (w / w) of regenerated rubber powder (particle size is about ≤0.25mm), 20% (w / w) of high-pressure polyethylene, 4% (w / w) of low-pressure polyethylene, 2.5% (w / w) of polyester w), AC foaming agent 1% (w / w), paraffin wax 0.2% (w / w), stearic acid 0.1% (w / w), carbon black 0.2% (w / w), manganese oxide 0.5% ( w / w), calcium carbide 1.5%; put the above ingredients into a mixer in proportion, stir and heat up to 100°C, preheat and plasticize, continue stirring for 20 minutes, stir and cool down to below 80°C, discharge, and melt at 200°C After plasticizing, it is extruded through the mold, cooled, pulled, and rolled to form a product. The outer diameter of the infiltration irrigation pipe is 20mm, the wall thickness of the pipe is 3.0mm, the distribution range of the micropores in the pipe wall is 0.1-0.3mm, and the water permeability 40-50L / h·m.

Embodiment 3

[0044] The difference from Example 1 is:

[0045] Take regenerated rubber powder (particle size is ≤0.177mm) 60% (w / w), high pressure polyethylene 27% (w / w), low pressure polyethylene 7% (w / w), blowing agent 0.7% (w / w), paraffin 0.3% (w / w), manganese oxide 0.2% (w / w), barium stearate 0.3% (w / w), carbon black 0.2% (w / w), magnesium hydroxide 0.3% ( w / w), calcium carbide 4%; put the above ingredients into the mixer in proportion, stir and heat up to 95°C, preheat and plasticize, continue stirring for 15 minutes, stir and cool down to below 80°C, discharge, and melt at 190°C After plasticizing, it is extruded through the mold, cooled, pulled, and rolled to form a product. The outer diameter of the infiltration irrigation pipe is 10mm, the wall thickness of the pipe is 2.0mm, and the distribution range of micropores in the pipe wall is 0.02-0.1mm. 10-30L / h·m.

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Abstract

The present invention discloses a microgravity percolation-irrigating pipe, its preparation method and application in greenhouse. The composition of raw material components for making said microgravity percolation-irrigating pipe includes (wt%) 45-70% of rubber powder, 18-48% of high-pressure polyethylene, 3-8% of low pressure polyethylene, 0-5% of polyester, 0.1-1% of lubricating agent, 0.05-1% of foaming agent, 0.01-0.05% of initiator, 1-5% of forming agent and 0.1-0.3% of colouring agent. Its preparation method includes the following steps: uniformly stirring above-mentioned raw material at normal temp., heating to 90-100 deg.C, making prethermoplastification, continuously stirring for 10-30 min, cooling to below 80 deg.C, discharging material, melting and plasticizing at 145-210 deg.C, feeding said material into mould, extruding, cooling, drawing so as to obtain the invented product. Said invention also provides its application method.

Description

technical field [0001] The invention relates to seepage irrigation technology, in particular to a microgravity seepage irrigation pipe and its preparation process and application in greenhouses. Background technique [0002] At present, the technologies used in my country's farmland water-saving irrigation are mostly pipe irrigation and micro-sprinkler irrigation water-saving technology. The one-time investment of pipe irrigation and micro-spray irrigation used in farmland is large, and the equipment used in the field is inconvenient, easy to damage, The maintenance cost is high, and among them, the easy blockage of the irrigation equipment in the micro and sprinkler irrigation is the biggest problem. The use of micro-spray irrigation in farmland can also easily cause salt accumulation and limit the development of crop roots, especially in the flowering period of melons, fruits and vegetables, which will affect pollination and reduce production. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G25/02C08L21/00F16L9/12
Inventor 蔡崇光刘作新尹光华李桂芳王振营
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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