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Plastic pipe with micropore structure and application thereof

A technology of microporous structure and plastic pipe, which is applied in applications, other household appliances, household appliances, etc., can solve the problem of flexible microporous tube structure, poor ability of the tube body to withstand pressure, flexible microporous tubes, etc. Insufficient tube strength and other problems, to achieve the effect of increasing biodegradation efficiency, easy density, increasing diffusion rate and absorption efficiency

Inactive Publication Date: 2009-10-28
佛山市南海大颖塑材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese patent ZL 01279439.2 discloses a continuous microporous aerator. The aerator is composed of a rigid support tube, a flexible microporous tube, a pipe collar and a head. The rigid support tube is covered with flexible micropores. tube, the inner diameter of the rigid support tube is 60-1000 mm, and the length is 30-100000 mm; the flexible microporous tube is made of rubber or rubber-plastic material, but the patent does not disclose the specific preparation method of the flexible microporous tube, the flexible microporous tube The structure of the porous tube and the specific material composition; moreover, the above-mentioned flexible microporous tube is not strong enough to be used alone
Although this patent application discloses many embodiments, the micropore diameter distribution in the pipe wall is in the range of 0.01-0.4mm. Tubes are only suitable for dispensing liquids such as water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Get 10 parts by weight (parts by weight, the same below) polyvinyl chloride (PVC) plastic powder, 4 parts of dioctyl phthalate (DOP) and 6 parts of powdered rubber (VP-101), in rubber-plastic kneader or high-speed mixer Stir evenly in medium, heat to 95°C, add 0.5 parts of stabilizer (lead salt composite stabilizer), 0.3 parts of foaming agent (p-toluenesulfonylsemicarbazide), 10 parts of inorganic filler (calcium carbonate), and continue stirring for about 20 Minutes, a uniform mixture is formed, the temperature is lowered while stirring, and the material is discharged when the temperature is lowered to 60°C.

[0048] The mixture formed in a rubber-plastic kneader or a high-speed mixer is fed into a single-screw extruder, which is equipped with a suitable molding head, extruded at about 165 ° C, then cooled and shaped to obtain a micro Hole structure of the plastic tube.

[0049] The inner diameter of the above-mentioned plastic pipe is 14 mm, the outer diameter is 19...

Embodiment 2

[0051] Prepare the plastic pipe with microporous structure by the same method as in Example 1, but adopt 8 parts of PVC plastic powder, 6 parts of DOP and 8 parts of powdered rubber (VP-201), 0.2 part of stabilizer, 0.2 part of blowing agent, inorganic 6 parts of filler (magnesium hydroxide). The average pore diameter of micropores in the microporous structure of the obtained plastic pipe is about 0.007-0.02 mm, and the distribution density of micropores on the pipe wall is 8-20 / mm 2 .

Embodiment 3

[0053] Prepare the plastic pipe with microporous structure by the same method as in Example 1, but adopt 12 parts of PVC plastic powder, 2 parts of DOP and 3 parts of powdered rubber (VP-101), 0.9 part of stabilizer, 0.5 part of blowing agent, inorganic Filler (calcium carbonate) 11 parts. The average pore diameter of micropores in the microporous structure of the obtained plastic pipe is about 0.02-0.05 mm, and the distribution density of micropores on the pipe wall is 25-40 / mm 2 .

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PUM

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Abstract

The invention discloses a plastic pipe with a microporous structure, the plastic pipe is flexible or rigid, and the pipe wall of the plastic pipe has a microporous structure irregularly distributed, and the microporous structure is formed on the plastic pipe Formed in the process, or formed by applying pressure on the plastic pipe; the pores of the microporous structure are straight or curved, the length of the microporous structure is equal to or greater than the wall thickness of the plastic pipe, and the microporous structure is The diameter of the micropores is uniform or irregular along the axial or radial direction of the plastic pipe, and the size of the diameter changes with the change of the internal pressure applied to the plastic pipe. The plastic pipe of the invention has the advantages of anti-silting, high-pressure resistance, etc., and can be used in many fields such as crop planting, aquaculture, and sewage treatment.

Description

technical field [0001] The invention relates to a plastic pipe with a microporous structure and its application, more specifically, the invention relates to a plastic pipe with an irregularly distributed microporous structure and its application. Background technique [0002] In modern agriculture, aquaculture, environmental protection and chemical industries, it is often necessary to add some kind of liquid or gas into a certain environment, for example, when planting crops and maintaining flowers and plants, it is necessary to continuously increase the water required for plant growth in the soil, When raising fish and shrimp, it is necessary to continuously increase the air or oxygen needed for the growth and survival of fish and shrimp in the breeding waters. During sewage treatment, it is necessary to continuously inject air or oxygen into the sewage treatment devices such as aeration tanks. In the chemical reactor Dispersion of gaseous or liquid reactive species into ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D23/00B29K105/04
Inventor 曾三郎
Owner 佛山市南海大颖塑材有限公司
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