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Preparation method of high-barrier and high density polyethylene plastic

A high-density polyethylene and high-barrier technology, which is applied in the field of plastic product preparation, can solve the problems of not being able to use high-barrier packaging and poor organic vapor barrier performance.

Inactive Publication Date: 2017-01-25
ZHEJIANG MODERN TEXTILE IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main packaging characteristics of high-density polyethylene: good water and moisture resistance, but poor gas and organic vapor resistance, so it cannot be used in high-barrier packaging

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: A kind of preparation method of high-barrier high-density polyethylene plastic adopts the following steps:

[0028] A) According to the number of parts by mass, take 0.1 parts of aluminum borate whiskers with a diameter of 0.5 μm and a length of 10 μm, 0.2 parts of concave-convex rod crystals with a length of 0.5 μm and a width of 0.01 μm, and 3.0 parts of characterization parameters with a diameter of 0.5 μm and a length of Calcium carbonate whiskers of 5 μm, 0.4 parts of laurylamine polyoxyethylene ether, 3.0 parts of muscovite flakes with a thickness of 1 μm and 250 meshes, 6.0 parts of 20% sodium bicarbonate aqueous solution by mass fraction, and 0.2 parts of nanoscale talcum powder are mixed. 140°C superheated steam reaction kettle with stirring and steaming reaction for 45min, vacuum microwave radiation at 300°C for 2h, then soak in 80 parts of sulfamic acid solution with a mass fraction of 30% for vacuum moisture absorption treatment, and heat to 60°...

Embodiment 2

[0032] Embodiment 2: A kind of preparation method of high-barrier high-density polyethylene plastic, adopts following steps:

[0033] A) Take 0.2 parts by mass of aluminum borate whiskers with a diameter of 0.75 μm and a length of 15 μm, 0.3 parts of a concave-convex rod crystal with a length of 2.5 μm and a width of 0.05 μm, and 4.0 parts of characterization parameters with a diameter of 1.5 μm and a length of Calcium carbonate whiskers of 15 μm, 0.6 parts of laurylamine polyoxyethylene ether, 4.0 parts of muscovite flakes with a thickness of 2 μm and 300 meshes, 7.0 parts of aqueous sodium bicarbonate solution with a mass fraction of 20-30%, and 0.3 parts of nanoscale talc powder , stirred and steamed in a superheated steam reactor at 150°C for 50min, irradiated with vacuum microwave at 350°C for 3h, then immersed in 100 parts of sulfamic acid solution with a mass fraction of 30% for vacuum moisture absorption treatment, and heated to 75°C after absorption Ultrasonic dispers...

Embodiment 3

[0037] Embodiment 3: A kind of preparation method of high-barrier high-density polyethylene plastic, adopts following steps:

[0038] A) According to the number of parts by mass, take 0.3 parts of aluminum borate whiskers with a diameter of 1 μm and a length of 20 μm, 0.4 parts of a concave-convex rod crystal with a length of 5 μm and a width of 0.10 μm, and 5.0 parts of carbonate with a diameter of 3 μm and a length of 20 μm. Calcium whiskers, 0.8 parts of laurylamine polyoxyethylene ether, 5.0 parts of muscovite flakes with a thickness of 3 μm and 350 meshes, 8.0 parts of 30% sodium bicarbonate aqueous solution with a mass fraction of 0.4 parts of nanoscale talc powder, and overheated at 160 ° C Stir and steam in the steam reactor for 60 minutes, irradiate with vacuum microwave at 400°C for 4h, then immerse in 120 parts of sulfamic acid solution with a mass fraction of 30% for vacuum moisture absorption treatment, heat it to 95°C and ultrasonically disperse for 1.5h after abs...

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Abstract

The invention relates to a preparation method of high-barrier and high density polyethylene (HDPE) plastic, and belongs to the technical field of preparation of plastic products. The preparation method comprises the following steps: mixing and stirring aluminum borate whiskers, attapulgite crystals, isinglass, a sodium hydrogen carbonate solution and talcum powder to obtain a mixture, performing microwave radiation, soaking the mixture into a sulfamic acid solution for heating and dispersion, performing ultrasonic treatment on suspensions, filtering, washing and drying the suspensions on the upper layer, mixing and stirring an obtained material with silicon dioxide, polyisobutylene colloidal particles, stearic acid, organic montmorillonite, HDPE-g-MAH and a silane coupling agent, drying, then adding HDPE plastic powder, performing blending and extrusion through two screw rods to obtain high-barrier HDPE plastic particles, and melting the particles to obtain the high-barrier HDPE plastic. Compared with the prior art, barrier materials such as the isinglass are added into the HDPE, so that the prepared HDPE has the characteristics of high barrier and high intensity, and can be used for high-barrier packaging of thin films, bottled and canned foods, medicines, daily necessities and the like.

Description

technical field [0001] The invention relates to a preparation method of high-barrier high-density polyethylene plastic, belonging to the technical field of plastic product preparation. Background technique [0002] High Density Polyethylene (High Density Polyethylene, referred to as "HDPE") macromolecule has a straight-chain linear structure, the molecular structure is tight, the crystallinity is as high as 85%-95%, and the relative density is 0.941-0.960. , non-polar thermoplastic resin, has good rheology and ductility, and is very suitable for making films, sheets, and thin-walled plastic products. High-density polyethylene is a non-toxic, tasteless, odorless white material with a melting point of about 130°C and a specific gravity lighter than water. It has good heat resistance and cold resistance, which is the same at room temperature or even at a low temperature of -40F. It also has high rigidity and toughness, good mechanical strength, acid and alkali resistance, orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/20C08L51/06C08K13/06C08K9/02C08K9/08C08K9/00C08K9/06C08K3/36C08K7/08C08K7/00C08K3/34
CPCC08L23/06C08J5/18C08J2323/06C08J2423/22C08K2201/003C08K2201/004C08K2201/011C08K2201/014C08L2201/14C08L2203/16C08L2205/02C08L2205/035C08L2207/062C08L23/22C08L51/06C08K13/06C08K9/02C08K9/08C08K9/00C08K9/06C08K3/36C08K7/08C08K7/00C08K3/34C08K3/346
Inventor 陈聪
Owner ZHEJIANG MODERN TEXTILE IND RES INST
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