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HDPE double-wall corrugated pipe and preparation method thereof

A double-wall corrugated pipe and ultrasonic technology, applied to chemical instruments and methods, pipes, rigid pipes, etc., can solve the problems of high brittleness of double-wall corrugated pipes, achieve good flexibility, good impact resistance, and improve impact resistance Effect

Inactive Publication Date: 2017-05-31
浙江全球管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first purpose of the present invention is to provide a HDPE double-wall corrugated pipe, which solves the problem of high brittleness of the double-wall corrugated pipe prepared from pure HDPE recycled materials, and has the effect of improving the toughness of the HDPE double-wall corrugated pipe

Method used

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  • HDPE double-wall corrugated pipe and preparation method thereof
  • HDPE double-wall corrugated pipe and preparation method thereof
  • HDPE double-wall corrugated pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0025] Embodiment 1-4: the preparation of HDPE return material, wherein the content of each component is as shown in Table 1:

[0026] A1: Select HDPE waste and cut off the heavily polluted part;

[0027] A2: Break the HDPE waste into 2-3mm particles, use ethanol as the medium, clean and remove the oil on the surface of HDPE in an ultrasonic cleaner with a power of 68kHZ, control the temperature of ultrasonic cleaning at 60-80°C, and rinse with water for 2-3 all over;

[0028] A3: After drying the HDPE waste, weigh the following raw materials according to the formula: HDPE waste, POE and HDPE new resin, and stir evenly;

[0029] A4: Put the uniformly stirred raw materials in A3 into the extruder to granulate to obtain HDPE regrind.

[0030] Wherein POE is ethylene-butene copolymer, wherein the proportion of butene segment is 30-35%.

[0031] Table 1: Composition Table in Embodiment 1-4

[0032]

Embodiment 5-20

[0033] Example 5-20: Prepare a double-walled corrugated pipe of HDPE according to the following steps. For the content of each component in Example 5-20, see Table 2, wherein HDPE return number 1 represents the component content as shown in Example 1 As mentioned above, HDPE return number 2 represents the component content as described in Example 2, and so on.

[0034] A kind of preparation of HDPE double-wall corrugated pipe:

[0035] S1: Take the HDPE return material of the formula amount, pour it into the stirring device and stir;

[0036] S2: Add the filler under the condition of stirring, stir for 2 minutes after the addition, then add the color masterbatch and defoamer, stir for 4-5 minutes until uniform, put the evenly mixed mixture into the suction cylinder for standby;

[0037] S3: Turn on the power of the main engine, then turn on the single-screw extruder to heat, raise the temperature to 100-120°C at a rate of 5°C / min, then keep it warm for 2 hours, then raise the...

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Abstract

The invention discloses a HDPE double-wall corrugated pipe which comprises an outer wall and an inner wall, wherein the outer wall consists of the following raw materials in parts by weight: 80-90 parts of a recycled HDPE material, 50-60 parts of a filling material, 5-8 parts of color master batch and 4-8 parts of a defoaming agent; the inner wall consists of the following raw materials in parts by weight: 70-80 parts of the recycled HDPE material, 50-60 parts of the filling material, 2-4 parts of color master batch and 4-8 parts of the defoaming agent; the recycled HDPE material is prepared by the following steps: A1, selecting a waste HDPE material, crushing the waste HDPE material into granules of 2-3mm, by taking ethanol as a medium, washing in an ultrasonic washing machine to remove oil stain on the surface of the HDPE, and further washing with water for 2-3 times; A2, drying the waste HDPE material, weighing the following raw materials in percentage by weight: 70% of the waste HDPE material, 10-25% of POE and the balance of unused HDPE resin, and mixing the raw materials together; A3, putting the raw material of the step A2 into an extruder, and performing pelleting, thereby obtaining the recycled HDPE material. An effect of improving the toughness of the HDPE double-wall corrugated pipe can be achieved.

Description

technical field [0001] The invention relates to the technical field of corrugated pipe preparation, in particular to an HDPE double-wall corrugated pipe and a preparation method thereof. Background technique [0002] In the past, reinforced concrete pipes, cast iron pipes, clay pipes, and masonry pipes were often used in the field of buried drainage. Since the above-mentioned pipes are all rigid pipes, the foundation is also rigid. The damage of the pipes, the pipes are rotten, and the leakage of the joints is extremely serious. Water seepage and leakage often occur, which will affect the surrounding environment. With the development of material technology, new polymer materials such as HDPE pipes are gradually applied to urban drainage systems. The roughness coefficient of these materials is generally much smaller than that of traditional reinforced concrete pipes, which not only reduces head loss and increases drainage capacity, but also Increased pipeline capacity. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K3/04C08K3/26F16L9/12B32B27/32B32B27/20B29C47/92B29L23/00B29C48/92
CPCB29C48/09B29C48/92B29C2948/92704B29L2023/22B32B1/08B32B27/20B32B27/32B32B2597/00C08L23/06C08L2203/18C08L2205/025C08L2205/03C08L2207/062F16L9/12C08L23/0815C08K3/04C08K2003/265Y02P70/10
Inventor 李永明
Owner 浙江全球管业有限公司
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