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Method for improving aging resistance of high-density polyethylene plastic

A high-density polyethylene, aging-resistant technology, applied in the field of improving the aging resistance of high-density polyethylene plastics, to achieve high mechanical stability, aging resistance and mechanical properties improvement, and improve the effect of development and utilization

Inactive Publication Date: 2019-01-04
徐培培
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the existing problems and provide a method for improving the aging resistance of high-density polyethylene plastics, which overcomes the problem of easy aging when used in special environments such as outdoors, and does not cause yellowing, brittleness, Surface cracking and other phenomena, significantly prolonging the service life of high-density polyethylene plastics

Method used

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  • Method for improving aging resistance of high-density polyethylene plastic

Examples

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Effect test

Embodiment 1

[0018] A method for improving the aging resistance of high-density polyethylene plastics, comprising the steps of:

[0019] (1) Mix fine silica aerogels with a particle size between 15-45 nanometers and basalt fibers at a mass ratio of 2.8:1.0, place them in steam at 150°C for 10 minutes under pressure, Then place it in an oven at 70°C and dry it for 8 hours. The dried mixture is put into a preheated muffle furnace for calcination. Processed nanomaterials;

[0020] (2) Dry the titanium dioxide powder in a vacuum oven at 80°C for 2 hours, then add it to a three-necked flask, use ethylenediamine and absolute ethanol as a solvent in a mass ratio of 1:4, and add it to the flask, The mixing mass ratio of material to liquid is 1:12, ultrasonically dispersed for 20 minutes, then heated in a water bath to 55°C, turned on the stirrer to stir, and added graphene oxide accounting for 2.3% of the mass of titanium dioxide powder, and at the same time, added dropwise chlorine that was 1.9 ...

Embodiment 2

[0028] A method for improving the aging resistance of high-density polyethylene plastics, comprising the steps of:

[0029] (1) Mix fine silica airgel with a particle size between 15-45 nanometers and basalt fiber at a mass ratio of 2.9:1.1, place in steam at 165°C for 12 minutes under pressure, Then place it in an oven at 75°C for 9 hours, put the dried mixture into a preheated muffle furnace for calcination. Processed nanomaterials;

[0030] (2) Dry the titanium dioxide powder in a vacuum oven at 82°C for 2.5 hours, then add it to a three-necked flask, use ethylenediamine and absolute ethanol as a solvent in a mass ratio of 1:4.5, and add it to the flask, The mixing mass ratio of material to liquid is 1:13, ultrasonically dispersed for 25 minutes, then heated in a water bath to 58°C, turned on the stirrer to stir, and added graphene oxide accounting for 2.4% of the mass of titanium dioxide powder, and at the same time, added dropwise chlorine that was 1.95 times the volume ...

Embodiment 3

[0038] A method for improving the aging resistance of high-density polyethylene plastics, comprising the steps of:

[0039] (1) Mix fine silica airgel with a particle size between 15-45 nanometers and basalt fiber at a mass ratio of 3.0:1.2, place in steam at 180°C for 14 minutes under pressure, Then place it in an oven at 80°C for 10 hours, put the dried mixture into a preheated muffle furnace for calcination. Processed nanomaterials;

[0040] (2) Dry the titanium dioxide powder in a vacuum oven at 85°C for 3 hours, then add it to a three-necked flask, use ethylenediamine and absolute ethanol as a solvent in a mass ratio of 1:5, and add it to the flask, The mixing mass ratio of material to liquid is 1:14, ultrasonically dispersed for 30 minutes, then heated in a water bath to 60°C, turned on the stirrer to stir, and added graphene oxide accounting for 2.5% of the mass of titanium dioxide powder, and at the same time added dropwise chlorine that was 2.0 times the volume of ti...

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Abstract

The invention relates to the technical field of novel functional materials, and discloses a method for improving the aging resistance of high-density polyethylene plastic. The method has the advantages that prepared surface treatment nanometer materials and modified titanium dioxide are mixed with high-density polyethylene granules, accordingly, light stabilization and ultraviolet absorption effects can be realized, and good synergistic effects can be realized; modified high-density polyethylene master batch can be obtained by means of extrusion and granulation and further can be processed toobtain plastic by means of preparation, accordingly, excellent anti-oxidation effects can be realized, the problem of liability to aging due to use in special environments such as outdoor environmentscan be solved, phenomena such as yellowing, embrittlement and surface crack can be prevented, and the service life of the high-density polyethylene plastic can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of new functional materials, and in particular relates to a method for improving the aging resistance of high-density polyethylene plastics. Background technique [0002] High-density polyethylene, referred to as "HDPE", also known as low-pressure polyethylene, is a translucent shape with high crystallinity and a certain degree of non-polar surface. PE has excellent resistance to most domestic and industrial chemicals. HDPE is a highly crystalline, non-polar thermoplastic resin. High-density polyethylene is a white powder granular product, non-toxic and tasteless, with a density in the range of 0.940-0.976 g / cm3; a crystallinity of 80%-90%, a softening point of 125-135°C, and a service temperature of up to 100 ℃; the melting temperature is 120~160℃. For materials with larger molecules, the recommended melting temperature range is between 200~250℃. It has good heat resistance and cold resistance, good chem...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K9/04C08K9/02C08K3/22C08K3/04C08K9/00C08K7/26C08K7/10C08K13/06
CPCC08K3/042C08K3/22C08K7/10C08K7/26C08K9/00C08K9/02C08K9/04C08K13/06C08K2003/2241C08L2201/08C08L2207/062C08L23/06
Inventor 徐培培
Owner 徐培培
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