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Regenerated polyethylene composition and preparation method thereof

A technology for recycled polyethylene and composition, which is applied in the field of recycled polyethylene composition and its preparation, can solve the problems of unsatisfactory processing performance, melt strength and elongation at break of recycled polyethylene pipes, and can expand the scope of use, The effect of reducing plastic cost and improving melt strength

Inactive Publication Date: 2017-07-04
ANHUI GUODENG PIPE IND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention utilizes the recycling of waste polyethylene and the preparation of polyethylene pipes in a one-step process. After modification, the materials are directly extruded by the melt pump without cooling to save electric energy. Strength and elongation at break are not ideal

Method used

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  • Regenerated polyethylene composition and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A recycled polyethylene composition is made from the following raw materials in parts by weight:

[0020] 56 parts of PE bottle cap material, 6 parts of PE large hollow material, 24 parts of mica, 12 parts of talcum powder, 3 parts of maleic anhydride grafted polyethylene, 7 parts of polyethylene paraffin and 8 parts of glycerol monostearate.

[0021] The preparation method comprises the following steps:

[0022] 1) Weigh the PE bottle cap material, PE large hollow material, mica, talc powder, maleic anhydride grafted polyethylene, polyethylene paraffin and glycerol monostearate according to the above weight, and put them into a high-speed mixer to stir and mix , the stirring speed is 2000 rpm, the stirring time is 11 minutes, and the stirring temperature is 102° C. to obtain a mixed material;

[0023] 2) Add the uniformly mixed materials into a twin-screw extruder, melt, plasticize, extrude, and granulate at a processing temperature of 216°C to obtain the product.

Embodiment 2

[0025] A recycled polyethylene composition is made from the following raw materials in parts by weight:

[0026] 50 parts of PE bottle cap material, 10 parts of PE large hollow material, 15 parts of mica, 20 parts of talcum powder, 2 parts of maleic anhydride grafted EPDM rubber, 5 parts of polyethylene paraffin and 4 parts of acetyl triethyl citrate .

[0027] The preparation method comprises the following steps:

[0028] 1) Weigh the PE bottle cap material, PE large hollow material, mica, talcum powder, maleic anhydride grafted EPDM rubber, polyethylene paraffin and acetyl triethyl citrate according to the above weight, and put them into high-speed mixing Machine stirring and mixing, the stirring speed is 1500 rpm, the stirring time is 10 minutes, and the stirring temperature is 110°C to obtain a mixed material;

[0029] 2) Put the uniformly mixed material into a twin-screw extruder, melt, plasticize, extrude, and granulate at a processing temperature of 210°C to obtain th...

Embodiment 3

[0031] A recycled polyethylene composition is made from the following raw materials in parts by weight:

[0032] 60 parts of PE bottle cap material, 5 parts of PE large hollow material, 30 parts of mica, 10 parts of talcum powder, 5 parts of maleic anhydride grafted polyethylene, 10 parts of polyethylene paraffin, 4 parts of acetyl triethyl citrate and boric acid 8 parts of ester.

[0033] The preparation method comprises the following steps:

[0034] 1) Weigh the PE bottle cap material, PE large hollow material, mica, talcum powder, maleic anhydride grafted polyethylene, polyethylene paraffin, acetyl triethyl citrate and borate according to the above weight, and put it into the high-speed Stir and mix with a mixer, the stirring speed is 2500 rpm, the stirring time is 16 minutes, and the stirring temperature is 120°C to obtain a mixed material;

[0035] 2) Put the uniformly mixed material into a twin-screw extruder, melt, plasticize, extrude, and granulate at a processing te...

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Abstract

The invention provides a regenerated polyethylene composition and a preparation method thereof. The regenerated polyethylene composition is prepared from the following raw materials in parts by weight: 50 to 60 parts of PE bottle cap material, 5 to 10 parts of PE hollow material, 15 to 30 parts of mica, 10 to 20 parts of talcum powder, 2 to 5 parts of compatibilizer, 5 to 10 parts of polyethylene paraffin, and 4 to 12 parts of plasticizer. The preparation method comprises the following steps: (1) weighing a PE bottle cap material, a PE hollow material, mica, talcum powder, a compatibilizer, polyethylene paraffin, and a plasticizer according to the formula mentioned above, adding the raw materials in to a high speed mixing machine, and stirring and mixing the raw materials for 8 to 16 minutes at a temperature of 100 to 120 DEG C under a rotation speed of 1500 to 2500 r / min to obtain an evenly mixed material; and (2) adding the evenly mixed material into a double screw extruder, melting the evenly mixed material at a temperature of 210 to 230 DEG C, and carrying out plasticizing, extruding, and granulating to obtain the regenerated polyethylene composition. The provided regenerated polyethylene composition has good elongation at break and an excellent processing performance.

Description

technical field [0001] The invention belongs to the technical field of recycling waste plastics, and in particular relates to a recycled polyethylene composition and a preparation method thereof. Background technique [0002] With the rapid development of the plastics industry, polyethylene, as a general-purpose plastic, is widely used in daily necessities, construction, automobile manufacturing and other fields. Especially in the field of pipes, due to the characteristics of good flexibility, corrosion resistance, and easy construction and installation, polyethylene pipes are widely used in municipal and building water supply and drainage, gas, heating, wire and cable threading, agricultural water-saving irrigation and industrial sewage. , Mine mineral transportation and other fields. At present, PE pipe has become the second largest plastic pipe variety in the world after PVC. [0003] With the expansion of polyethylene application fields and the increase of usage, waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L51/04C08K13/02C08K3/34C08K5/103C08K5/11C08K5/12
CPCC08L23/06C08K2201/014C08L2205/025C08L2205/035C08L2205/08C08L2207/20C08L51/04C08K3/34C08K5/103C08L51/003C08K5/11C08K5/12
Inventor 彭燚李娟
Owner ANHUI GUODENG PIPE IND TECH CO LTD
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