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A method for continuously preparing rubber-plastic blended microporous irrigation pipes with a multi-stage extruder

The technology of extruder and infiltration irrigation pipe is applied in the field of preparing rubber-plastic blended microporous infiltration irrigation pipe and multi-stage extruder to prepare rubber-plastic blended microporous infiltration irrigation pipe, which can solve the problem of discontinuity and water seepage in the process section. The problems of low uniformity and long time can achieve the effect of improving the uniformity of water seepage and solving the low uniformity of water seepage.

Active Publication Date: 2021-01-05
北京润泽润丰应用技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the discontinuous process section, long time, low efficiency, high production cost, low water seepage uniformity, poor mechanical properties and strong odor existing in the current rubber-plastic blended microporous permeable irrigation pipe preparation method. Large product performance problems, providing a new method for continuous and efficient preparation of low-cost high-performance rubber-plastic blended microporous irrigation pipes with multi-stage extruders

Method used

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  • A method for continuously preparing rubber-plastic blended microporous irrigation pipes with a multi-stage extruder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: A conical co-rotating twin-screw extruder with an aspect ratio of 20:1 and an average screw diameter of 60mm is used for the co-rotating twin-screw extruder 1; a side feeder 4 is selected with an aspect ratio of 24:1 and a rotor A single-rotor machine with a diameter of 40mm; Extruder 5 with a length-to-diameter ratio of 20:1 and an average screw diameter of 70mm is a conical counter-rotating twin-screw extruder, and the head adopts a double head. Co-rotating twin-screw extruder 1, the number of barrels in the activation section is 2, the temperature is 100°C, 120°C, the number of barrels in the mixing section is 2, the temperature is 150°C, 160°C, the number of barrels in the discharge section It is 1 section, the temperature is 140°C; the side feeder 4 has 6 heating zones, the temperature is 130°C, 150°C, 170°C, 170°C, 170°C, 160°C; the extruder 5 has 6 There are three heating zones, the temperature is 120°C, 130°C, 150°C, 150°C, 150°C, 130°C. After the...

Embodiment 2

[0023]Example 2: A parallel co-rotating twin-screw extruder with an aspect ratio of 36:1 and a screw diameter of 30mm is selected for the co-rotating twin-screw extruder 1; a side feeder 4 is selected with an aspect ratio of 10:1 and a rotor diameter of 20mm One set of double-rotor machine; the extruder 5 for extruding and shaping adopts one set of single-screw extruder with length-to-diameter ratio of 12:1 and screw diameter of 40mm, and the head adopts a single head. Co-rotating twin-screw extruder 1 has 3 barrels in the activation section, and the temperatures are 100°C, 110°C, and 110°C, and the mixing section has 5 barrels, and the temperatures are 130°C, 140°C, 145°C, 145°C and 140°C, the number of barrels in the discharge section is 1 section, and the temperature is 130°C; the side feeder 4 has 2 heating zones, and the temperatures are 130°C and 150°C; the extruder 5 has 4 There are three heating zones, the temperature is 120°C, 140°C, 140°C, 130°C in sequence. After t...

Embodiment 3

[0025] Example 3: A parallel co-rotating twin-screw extruder with an aspect ratio of 28:1 and a screw diameter of 75mm is used for the co-rotating twin-screw extruder 1; a side feeder 4 is selected with an aspect ratio of 16:1 and a rotor diameter of 50mm One double-rotor machine; the extruder 5 for extruding and shaping is selected as a single-screw extruder with a length-to-diameter ratio of 16:1 and a screw diameter of 90mm, and the head adopts multiple heads. Co-rotating twin-screw extruder 1 has 2 barrels in the activation section, and the temperatures are 100°C and 120°C in sequence; the number of barrels in the mixing section is 4, and the temperatures are 150°C, 165°C, 165°C, and 150°C in sequence. The number of barrels in the discharge section is 1 section, and the temperature is 140°C; the side feeder 4 has 4 heating zones, and the temperatures are 140°C, 170°C, 180°C, and 170°C; the extrusion setting extruder 5 has 5 One heating zone, the temperature is 120°C, 140°C...

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Abstract

The invention relates to a method for continuously and efficiently producing a low-cost high-performance rubber-plastic blending microporous infiltration irrigation pipe by a multi-stage extruder andbelongs to the recycling of waste rubber. By using an equidirectional two-screw extruder, one or two side feeders, an extrusion shaping extruder, a cooling water tank, a tractor and a winder, rubber powder activated by an activation section of the equidirectional two-screw extruder, plastic melted and plasticized by the side feeder(s) and a compatibilizing modifier are continuously mixed in a mixing section of the equidirectional two-screw extruder and then extruded, cooled and shaped, and are finally packaged by the tractor and the winder to obtain a product. The method solves the problems ofincomplete desulfurization of high-temperature rubber powder, incomplete melting of low-temperature plastic, poor mechanical properties and large odor existing in simultaneous processing of the rubber powder and the plastic, and the problems of long mixing time, discontinuity and product poor water seepage uniformity caused by intermittent mixing, and also saves additives. The method has the advantages of continuity, high efficiency, low cost, good water seepage uniformity, enhanced mechanical properties, small odor and blocking resistance.

Description

Technical field: [0001] The invention relates to a new method for preparing a rubber-plastic blended microporous irrigation pipe, in particular to a method for preparing a rubber-plastic blended microporous irrigation pipe with a multi-stage extruder, which belongs to waste rubber recycling and agricultural irrigation Water saving field. Background technique: [0002] my country is facing the dual problems of the world's largest annual output of waste tires and extremely limited per capita fresh water resources. Among them, agricultural irrigation water accounts for 50% of the total water consumption, but the effective utilization coefficient of farmland irrigation water in my country is only 0.50. Therefore, efficient and environmentally friendly utilization It is of great significance to use waste tire rubber to solve the problem of water conservation in agricultural irrigation. Compared with drip irrigation pipes and other irrigation facilities, rubber-plastic blended mic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C48/40B29C48/92B29C48/68B29C48/625B29K105/00B29L23/00
CPCB29K2105/0005B29L2023/00
Inventor 任冬云刘晓博汪冯新王杰胡强伍社毛张珠珠田森林王访
Owner 北京润泽润丰应用技术研究院有限公司