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Regeneration high-density polyethylene (HDPE) particle used for tubings and manufacture method thereof

A manufacturing method and particle technology, applied in the direction of pipes, pipes/pipe joints/pipes, rigid pipes, etc., can solve the problems of recycling HDHE melt index, tensile strength physical properties that do not meet the requirements of pipes, and reduce the amount of materials used. cost, improved toughness, and environmental benefits

Inactive Publication Date: 2010-08-18
马鞍山支点高分子材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the physical properties such as the melt index and tensile strength of recycled HDHE cannot meet the requirements of pipes, there is no use and patent report of using recycled HDPE materials to make pipes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Dosing in the following components: Recycled HDPE (raw material from shampoo bottles, fruit baskets, etc.): 98%; Vinyltrimethoxysilane: 0.6%; DCP (dioctyl phthalate): 0.4%; Hydroquinone: 0.8%; black masterbatch: 0.2%.

[0023] Stir vinyltrimethoxysilane, DCP (dioctyl phthalate), tert-butyl hydroquinone and color masterbatch with a mixer at a speed of 200r / m for two hours at 50°C and then recycle HDPE material Add them together to the feed port of the extruder.

[0024] Use the extruder to extrude the mixture at a speed of 100rpm. The subsection temperatures of the extruder head are: 140, 140, 140, 160, 160, 180, 180, 200, and cut into certain sizes with a granulator. Dry after granulation.

[0025] The performance comparison of the HDPE material before regeneration and after regeneration in this example is shown in Table 1.

[0026] Table I:

[0027] performance

Embodiment 2

[0029] Dosing in the following components: Recycled HDPE (raw material from shampoo bottles, fruit baskets, etc.): 97.8%; Vinyltriethoxysilane: 0.8%; DCP: 0.4%; tert-butylhydroquinone: 0.8% ; Black masterbatch: 0.2%.

[0030] Stir vinyltrimethoxysilane, DCP, tert-butylhydroquinone and color masterbatch with a mixer at a speed of 200r / m for two hours at 50°C and then feed them into the feed port of the extruder together with recycled HDPE materials .

[0031] Use the extruder to extrude the mixture at a speed of 100rpm. The subsection temperatures of the extruder head are: 140, 140, 140, 160, 160, 180, 180, 200, and cut into certain sizes with a granulator. Dry after granulation.

[0032] In this example, the performance comparison of the HDPE material before regeneration and after regeneration is shown in Table 2.

[0033] Table II:

[0034] performance

Embodiment 3

[0036] Dosing according to the following components: recycled HDPE (raw material comes from the caps of bottles such as drinking water): 97.8%; vinyltriethoxysilane: 0.8%; DCP: 0.4%; diaryl secondary amine: 0.8%; black Parent: 0.2%.

[0037] Stir vinyltriethoxysilane, DCP, secondary diarylamine and color masterbatch with a stirrer at a speed of 200r / m at 50°C for two hours, and then feed them into the feed port of the extruder together with recycled HDPE materials.

[0038] Use the extruder to extrude the mixture at a speed of 100rpm. The subsection temperatures of the extruder head are: 140, 140, 140, 160, 160, 180, 180, 200, and cut into certain sizes with a granulator. Dry after granulation.

[0039] The performance comparison of the HDPE material before regeneration and after regeneration in this example is shown in Table 3.

[0040] Table three:

[0041] performance

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Abstract

The invention discloses a regeneration high-density polyethylene (HDPE) particle used for tubings and a manufacture method thereof. The method comprises the following steps: firstly, drying a cross-linking agent, an antioxidant and a color masterbatch; then evenly stirring 0.1 to 2 percent of cross-linking agent, 0.1 to 1 percent of antioxidant and 0.1 to 0.2 percent of color masterbatch; then adding to the charging opening of a plastic extruder together with 96.8 to 99.7 percent of dried and recovered HDPE; then extruding materials by the extruder at the speed of 80 to 150rpm, and cutting the materials into particles by a cutting machine and then drying to obtain the regeneration HDPE particle. In the invention, the parameter of the melt index and the like of the recovered HDPE is changed by crosslinking to enable the HDPE to be beneficial to extrusion molding, and the mechanical properties of toughness, tensile strength and the like of the recovered HDPE are improved so that the regeneration HDPE particle can be used for tubing manufacture, thereby reducing the material costs of the HDPE tubes and being beneficial to the environmental protection.

Description

【Technical field】 [0001] The present invention relates to recycled HDPE particles for pipes and a method for their manufacture. 【Background technique】 [0002] HDPE pipes are becoming more and more popular due to their excellent properties such as corrosion resistance, temperature resistance, wear resistance, no pollution to the transmission medium, long service life, and low manufacturing and installation costs. They are used in gas transmission, water supply, heating, and construction Water supply and drainage and other fields have been widely used, and the consumption has increased rapidly in recent years. At present, the use of HDPE pipes in plastic pipes has ranked second, second only to PVC pipes. Gas pipes and water pipes with small and medium diameters have an absolute advantage in plastic pipes, with a market share of over 90%. Others such as corrugated pipes, upper and lower water pipes, oil and gas pipes, mining pipes and agricultural drip irrigation pipes are a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K5/5425C08K5/12C08J3/24B29B9/06B29C47/92F16L9/12B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 吴驰飞许海燕姜亮靓
Owner 马鞍山支点高分子材料研究院有限公司
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