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Degradable polyethylene modified material and preparation method thereof

A polyethylene modification and polyethylene technology, which is applied in the field of degradable polyethylene modification materials and their preparation, can solve the problems of adding a water-absorbing core layer and increasing costs, and achieves the effects of avoiding pollution, long-bearing state, and not easily broken.

Active Publication Date: 2015-05-06
江西缘至家实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the increase of the water-absorbing core layer leads to an increase in cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: a kind of preparation method of degradable polyethylene modified material

[0016] A preparation method of degradable polyethylene modified material, comprising the following steps:

[0017] , adding high-density polyethylene, calcium carbonate, konjac glucomannan, corn starch and foaming agent into the mixer and mixing evenly to obtain a polyethylene mixture; the high-density polyethylene, calcium carbonate, konjac glucomannan, The weight percentages of cornstarch and foaming agent and polyethylene mixture are 49.8%, 30%, 10%, 10% and 0.2%, respectively;

[0018] 2. Add the polyethylene mixture obtained in step 1 into a twin-screw extruder with a rotational speed of 300 to 350 rpm for kneading, and set the extrusion temperature of the first and second sections of the twin-screw extruder to be 180° C. , the extrusion temperature of other sections is 200℃;

[0019] 3. Cool the material extruded in step 2 to room temperature and cut into pel...

Embodiment 2

[0021] Embodiment 2: a kind of preparation method of degradable polyethylene modified material

[0022] A preparation method of degradable polyethylene modified material, comprising the following steps:

[0023] , adding high-density polyethylene, calcium carbonate, konjac glucomannan, corn starch and foaming agent into the mixer and mixing evenly to obtain a polyethylene mixture; the polyethylene, calcium carbonate, konjac glucomannan, corn starch and the weight percentages of foaming agent and polyethylene mixture are 69.8%, 20%, 9%, 1% and 0.2% respectively;

[0024] 2, adding the polyethylene mixture obtained in step 1 into a twin-screw extruder with a rotational speed of 300 to 350 rpm for kneading, and the extrusion temperature of the first and second sections of the twin-screw extruder is 170°C, The extrusion temperature of other sections is 210℃;

[0025] 3. Cool the material extruded in step 2 to room temperature and cut into pellets.

[0026] Th...

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Abstract

The invention relates to a degradable polyethylene modified material and a preparation method thereof. The degradable polyethylene modified material is mainly applied to the production of a disposable degradable plastic bag and is mainly prepared from high-density polyethylene, calcium carbonate, konjac glucomannan, corn starch and a foaming agent. Due to the water retentivity of the konjac glucomannan, the disposable degradable plastic bag prepared from the degradable polyethylene modified material can be maintained in a relative drying state, so that the deterioration and the smelliness of food wastes contained in the disposable degradable plastic bag are difficult to occur. Meanwhile, the disposable degradable plastic bag has stronger toughness due to the addition of the konjac glucomannan, so that the disposable degradable plastic bag is difficult to break. The disposable degradable plastic bag is easy to degrade by taking the konjac glucomannan as a raw material, so that the environment pollution is avoided. The plastic bag commonly used in the existing market is prepared from a single plastic polymer, so that character writing or printing on the plastic bag cannot be carried out. The disposable degradable plastic bag provided by the invention is molded in a blowing manner by using a foaming technique, so that the character writing or the pattern printing on the disposable degradable plastic bag can be carried out.

Description

technical field [0001] The invention relates to a polyethylene material and a preparation method thereof, in particular to a degradable polyethylene modified material and a preparation method thereof. Background technique [0002] Plastic is a polymer material, a series of macromolecular polymers that can be obtained from petroleum. For example, polyethylene, polypropylene, polyvinyl chloride. The plastic bags currently used are made of many materials, of which high molecular polymers (or synthetic resins) are the main components of plastics. In addition, in order to improve the performance of plastics, various auxiliary materials are added to the polymers. , such as fillers, plasticizers, lubricants, stabilizers, colorants, etc., can become plastics with good performance. 1. Synthetic resin Synthetic resin is the main component of plastic, and its content in plastic is generally 40% to 100%. Most plastics need to add other substances in addition to the main component resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L5/02C08L3/02C08K3/26C08J9/04C08J9/08B29B9/06B29C47/92B29C48/92
CPCB29C48/022
Inventor 庞杰胡聪赵菲王洁张以盼潘娟孙中琦
Owner 江西缘至家实业有限公司
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