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A method of recycling drip irrigation tape

A technology of drip irrigation tape and content, applied in the direction of plastic recycling, recycling technology, etc., can solve the problems of polyethylene molecular weight reduction, failure to meet actual needs, performance degradation, etc., to improve performance, improve processing flow performance, and improve performance. Effect

Active Publication Date: 2016-05-11
GANSU DAYU WATER SAVING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drip irrigation tape is generally produced by extruding polyethylene as a raw material, and its use is generally exposed to the natural environment. Due to the influence of the external environment (such as heat, light, oxygen, microorganisms, etc.), photo-oxidative degradation, thermal oxygen, etc. will occur. Degradation and microbial degradation reduce the molecular weight of polyethylene, resulting in a decline in its performance, so that it cannot meet actual needs
In addition, the drip irrigation belt will bear the corresponding pressure when irrigating, and its performance will decrease with the extension of use time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 A kind of novel method of drip irrigation tape recovery, comprises the following steps:

[0015] (1) Wash and break the recovered waste drip irrigation tape to obtain the broken material of the drip irrigation tape;

[0016] (2) Send the drip irrigation belt crushed material, silane coupling agent KH-550, dicumyl peroxide, polyethylene black masterbatch, and PPA processing aid into the mixer, and mix well to obtain the raw material;

[0017] (3) Feed the raw materials into the single-screw extrusion granulator, the temperature of the first stage is 165°C, the temperature of the second stage is 180°C, the temperature of the third stage is 190°C, the temperature of the fourth stage is 205°C, the temperature of the head Granulate under the condition of 200°C, that is to say, the content of the broken material of the drip irrigation belt is 100phr, the content of the silane coupling agent KH-550 is 0.05phr, the content of dicumyl peroxide is 0.05phr, and the co...

Embodiment 2

[0019] Embodiment 2 A kind of novel method of drip irrigation tape recovery, comprises the following steps:

[0020] (1) Wash and break the recovered waste drip irrigation tape to obtain the broken material of the drip irrigation tape;

[0021] (2) Send the drip irrigation belt crushed material, silane coupling agent KH-550, dicumyl peroxide, polyethylene black masterbatch, and PPA processing aid into the mixer, and mix well to obtain the raw material;

[0022] (3) Feed the raw materials into the single-screw extrusion granulator, the temperature of the first stage is 175°C, the temperature of the second stage is 190°C, the temperature of the third stage is 200°C, the temperature of the fourth stage is 210°C, the temperature of the head Granulate under the condition of 210°C, that is, the content of the broken material of the drip irrigation belt is 100phr, the content of the silane coupling agent KH-550 is 0.1phr, the content of dicumyl peroxide is 0.1phr, and the content of ...

Embodiment 3

[0024] Embodiment 3 A kind of novel method of drip irrigation tape recovery, comprises the following steps:

[0025] (1) Wash and break the recovered waste drip irrigation tape to obtain the broken material of the drip irrigation tape;

[0026] (2) Send the drip irrigation belt crushed material, silane coupling agent KH-550, dicumyl peroxide, polyethylene black masterbatch, and PPA processing aid into the mixer, and mix well to obtain the raw material;

[0027] (3) Feed the raw materials into the single-screw extrusion granulator, the temperature of the first section is 170°C, the temperature of the second section is 185°C, the temperature of the third section is 195°C, the temperature of the fourth section is 208°C, the temperature of the head The granulation is carried out under the condition of 205°C, that is, the content of the broken material of the drip irrigation belt is 100phr, the content of the silane coupling agent KH-550 is 0.08phr, the content of dicumyl peroxide ...

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PUM

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Abstract

The invention relates to a method for recovering a drip irrigation tape. The method comprises the following steps of (1) cleaning and breaking recovered waste drip irrigation tape to obtain a drip irrigation tape broken material; (2) sending the drip irrigation tape broken material, a silane coupling agent KH-550, dicumyl peroxide, polyethylene black master batches and a PPA processing aid into a mixer and mixing the above materials uniformly to obtain a raw material; (3) sending the raw material into a single-screw extruding granulator and granulating to obtain a drip irrigation tape regenerated material; and (4) sending the drip irrigation tape regenerated material into a drip irrigation tape production extruder and producing the irrigation tape by a biaxial stretching orientation process, and thus the novel drip irrigation tape can be obtained. The method provided by the invention is simple, has high production efficiency, can not only increase and recover polyethylene molecular weight in the recovered material but also improve the performances of the drip irrigation tape.

Description

technical field [0001] The invention relates to the field of water-saving irrigation, in particular to a new method for recycling drip irrigation belts. Background technique [0002] Plastics have excellent properties, and the number, function and application range of modern industrial materials are expanding rapidly. In many fields, plastics have largely replaced traditional materials such as metal, wood, and paper. It is precisely because of the widespread use of plastics that the impact of waste plastics on the environment and human health has become a serious problem that people have to face. As a recyclable plastic, thermoplastics can reduce their environmental impact by recycling them. At the same time, the energy consumed in the recycling process of plastics is far less than the consumption of manufacturing new materials. At present, plastics with good recycling performance and degradable plastics are generally regarded as green and environmentally friendly material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C69/02B29C55/12B29C47/00B29B9/06B29B17/00
CPCY02P70/10Y02W30/62
Inventor 张国祥王飞殷益明
Owner GANSU DAYU WATER SAVING