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High density polyethylene (HDPE)-PA66 composite barrier material and preparation method thereof

A barrier material and resin technology, applied in the field of HDPE-PA66 composite barrier material and its preparation, can solve the problem that the barrier performance of the blend cannot be improved, so as to reduce fuel leakage, ensure integrity and uniformity , Improve the effect of barrier performance

Active Publication Date: 2012-07-18
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the blending process, if the barrier resin is not stretched enough and is distributed in the matrix resin in the form of larger particles, or the barrier resin is broken into particles due to excessive shearing and does not form a sheet, The barrier properties of the blends were not improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Prepare materials according to the following components and contents:

[0027] Commercially available high-density polyethylene resin 50kg, nylon 66 flat yarn 40kg, maleic anhydride graft compatibilizer 10kg;

[0028] (2) melting the high-density polyethylene resin at 190° C. to obtain a high-density polyethylene resin melt;

[0029] (3) Lead out the nylon 66 (PA66) flat yarn from the creel, adjust the tension through the tension roller, enter the melt impregnation die, and use the compatibilizer and the melt of high-density polyethylene resin in the die to make nylon 66 flat yarn Disperse and infiltrate the filaments so that the nylon 66 flat filaments are completely infiltrated;

[0030] (4) the nylon 66 flat wire that obtains soaking completely is cooled and is cut into the pellet of corresponding length;

[0031] (5) Send the pellets into a hollow blow molding machine, and blow molding can obtain a HDPE-PA66 composite single-layer barrier oil tank.

Embodiment 2

[0033] (1) Prepare materials according to the following components and contents:

[0034] Commercially available high-density polyethylene resin 70kg, nylon 66 flat yarn 25kg, maleic anhydride graft compatibilizer 5kg;

[0035] (2) melting the high-density polyethylene resin at 180° C. to obtain a high-density polyethylene resin melt;

[0036] (3) Lead out the nylon 66 flat yarn from the creel, adjust the tension through the tension roller, enter the melt impregnation die, and disperse the nylon 66 flat yarn in the die using a compatibilizer and a melt of high-density polyethylene resin and infiltration, so that the nylon 66 flat wire is completely infiltrated;

[0037] (4) the nylon 66 flat wire that obtains soaking completely is cooled and is cut into the pellet of corresponding length;

[0038] (5) Send the pellets into a hollow blow molding machine, and blow molding can obtain a HDPE-PA66 composite single-layer barrier oil tank.

Embodiment 3

[0040] (1) prepare 88kg, nylon 66 flat yarn 10kg, maleic anhydride graft compatibilizer 2kg according to the following components and contents;

[0041] (2) melting the high-density polyethylene resin at 170° C. to obtain a high-density polyethylene resin melt;

[0042] (3) Lead out the nylon 66 flat yarn from the creel, adjust the tension through the tension roller, enter the melt impregnation die, and disperse the nylon 66 flat yarn in the die using a compatibilizer and a melt of high-density polyethylene resin and infiltration, so that the nylon 66 flat wire is completely infiltrated;

[0043] (4) the nylon 66 flat wire that obtains soaking completely is cooled and is cut into the pellet of corresponding length;

[0044] (5) Send the pellets into a hollow blow molding machine, and blow molding can obtain a HDPE-PA66 composite single-layer barrier oil tank.

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Abstract

The invention relates to a high density polyethylene (HDPE)-PA66 composite barrier material and a preparation method thereof. The material comprises the following components by weight: 50 to 90 parts of high density polyethylene resin, 10 to 40 parts of nylon 66 ribbon-like filament and 0 part to 10 parts of compatilizer. Compared with the prior art, the nylon 66 resin for isolation in the product exists in the formation of the slice-shaped ribbon-like filament from beginning to end, maintains continuity and dispersibility of the nylon 66 ribbon-like filament as an isolation material in the particle material, and ensures completeness and evenness of the nylon 66 ribbon-like filament in a single-layer oil tank and obtained through the following blow molding process. Therefore, fuel oil can meet large resistance when penetrating through the wall of the oil tank due to the nylon 77 ribbon-like filament, so that fuel oil leakage of the fuel oil tank is reduced, and the isolation performance of the fuel oil tank is improved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a HDPE-PA66 composite barrier material and a preparation method thereof. Background technique [0002] As a commonly used packaging material, high-density polyethylene (HDPE) has many advantages: high stiffness, strength, hardness, creep resistance, gloss and moisture permeability resistance, good impact toughness, electrical insulation Sex, tear resistance, low temperature resistance, etc., but the resistance of HDPE O 2 , CO 2 And oil resistance and permeability are very poor, so it needs to be modified to meet the requirements of higher barrier performance of packaging materials. [0003] At present, the methods used to improve the barrier properties of high-density polyethylene mainly include: surface treatment technologies such as fluorination, sulfonation or spraying on the plastic surface; multi-layer co-extrusion technology such as polyethylene layer, adhesive l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L77/06C08L51/06C08L51/00
Inventor 肖玲玲
Owner HEFEI GENIUS NEW MATERIALS
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