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Enhanced toughening recycled polyethylene material and preparation method thereof

A technology of strengthening and toughening polyethylene, which is applied in the field of preparation of reinforced and toughened recycled polyethylene materials, can solve the problems of excessive cross-linking, poor processing stability, and it is difficult to mix the cross-linking assistant and the matrix resin evenly, and the processing Good stability, improved tensile strength and impact toughness

Inactive Publication Date: 2013-04-24
CHANGZHOU HIGH TECH RES INST OF NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, it is difficult to mix the cross-linking aid and the matrix resin evenly, and local over-cross-linking is prone to occur during processing. The resulting product has a low melt index, poor processing stability, and frequent blockage of the extruder head.

Method used

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  • Enhanced toughening recycled polyethylene material and preparation method thereof
  • Enhanced toughening recycled polyethylene material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A reinforced and toughened recycled polyethylene material according to the present invention, which is made of the following raw materials in parts by mass: 100 parts of recycled polyethylene; 5 parts of cross-linked masterbatch; 0.5 part of antioxidant; 0.1 part of processing aid share.

[0029] The polyethylene recycled material is obtained from garbage plastics purchased from the market through classification compounding, melt blending and granulation, with a filler mass fraction of 20% and a density of 1.085g / cm 3 .

[0030] The cross-linked masterbatch is self-made, DBPH / TAIC / EVA colloidal particles.

[0031] In the above cross-linked masterbatch, the mass fraction of EVA is 96%, the mass fraction of DBPH is 3%, and the mass fraction of TAIC is 1%.

[0032] The antioxidant is a mixture of antioxidant 1010 and antioxidant 168, the ratio (mass ratio) of which is 3 / 1, and the processing aid is liquid paraffin.

[0033] Manufacturing process:

[0034] Preparation o...

Embodiment 2

[0038] A reinforced and toughened recycled polyethylene material according to the present invention, which is made of the following raw materials in parts by mass: 100 parts of recycled polyethylene; 3 parts of cross-linked masterbatch; 3 parts of toughening agent; 0.6 parts of agent; 0.2 parts of processing aid.

[0039] The polyethylene reclaimed material is obtained from garbage plastics purchased from the market through classification compounding, melt blending and granulation, with a filler mass fraction of 30% and a density of 1.118g / cm 3 .

[0040] The cross-linked masterbatch is self-made, DBPH / EGDMA / EVA colloidal particles.

[0041] In the above cross-linked masterbatch, the mass fraction of EVA is 97%, the mass fraction of DBPH is 2.5%, and the mass fraction of EGDMA is 0.5%.

[0042] The toughening agent is EPDM (Japan Mitsui 4045M), the antioxidant is a mixture of antioxidant 1010 and antioxidant 168, the ratio (mass ratio) is 3 / 1, and the processing aid is liqui...

Embodiment 3

[0046] A kind of reinforced and toughened recycled polyethylene material according to the present invention, which is made of the following raw materials in parts by mass: 100 parts of recycled polyethylene; 4 parts of cross-linked masterbatch; 2 parts of toughening agent; 0.8 parts of agent; 0.3 parts of processing aid.

[0047] The polyethylene recycled material is obtained from garbage plastics purchased from the market through classification compounding, melt blending and granulation, with a filler mass fraction of 25% and a density of 1.103g / cm 3 .

[0048] The cross-linked masterbatch is self-made, DBPH / EVA / EGDMA colloidal particles.

[0049] In the above cross-linked masterbatch, the mass fraction of EVA is 95%, the mass fraction of DBPH is 4%, and the mass fraction of EGDMA is 1%.

[0050] The toughening agent is POE (Japan Mitsui DF840), the antioxidant is a mixture of antioxidant 1010 and antioxidant 168, the ratio (mass ratio) is 3 / 1, and the processing aid is ste...

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Abstract

The invention relates to an enhanced toughening recycled polyethylene material. The enhanced toughening recycled polyethylene material is characterized by comprising, by mass, recycled polyethylene 100 parts, crosslinking masterbatch 1part to 5 parts, flexibilizer 0part to 3 parts, antioxygen 0.2 part to 1.5 parts, and processing agent 0.1 part to 0.5 part, wherein the crosslinking masterbatch is ethylene-vinyl acetate copolymer with a substrate as ethylene, a cross-linking agent is dicumyl peroxide and the like, an assistant cross-linking agent is melamine three allyl ester and the like, on the basis of total mass of the crosslinking masterbatch, by mass, a base body is 95%-98%, the cross-linking agent is 2%-5%, and the assistant cross-linking agent is 0%-2%. The tensile strength of the enhanced toughening recycled polyethylene material is 11.3-15.3MPa, the rupture elongation ratio is 220%-380%, the notch impact strength is 10.9-14.5KJ / m2, the melt index is 1.6g-2.9g / 10min, and the processability is good. The invention further discloses and a preparation method of the enhanced toughening recycled polyethylene material.

Description

technical field [0001] The invention relates to a preparation method of reinforced and toughened recycled polyethylene material. Background technique [0002] Plastics have excellent comprehensive properties and are widely used. my country's plastics industry has developed rapidly since the 1980s. The annual output has grown at a rate of more than 10%, and the number of plastic products consumed each year has also increased, resulting in a large amount of waste plastics. If waste plastics cannot be recycled in time, it will not only waste resources , but also cause great harm to the environment. In particular, some general-purpose plastics, such as polyethylene, are difficult to degrade due to their stable chemical properties, and the current recovery rate is low, which has caused serious pollution to the environment. Recycling and reusing waste plastics is the best way to reduce waste of resources, rationally utilize energy, and protect the environment. Especially for pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L23/16C08L33/04C08K5/14C08K5/3492C08K5/12C08K5/01C08K5/103C08J3/22B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/022
Inventor 杨永兵陈强
Owner CHANGZHOU HIGH TECH RES INST OF NANJING UNIV
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