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High-density polyethylene resin-based nanocomposite material and preparation method thereof

A technology of high-density polyethylene and nano-composite materials, which is applied in the field of composite materials of high-density polyethylene materials, can solve the problems of not being able to give full play to the excellent performance of graphene, easy agglomeration, and reducing the performance of matrix resins, and achieve excellent mechanical properties and Effects of thermal properties, promotion of dispersion, and excellent performance

Active Publication Date: 2019-03-01
XIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the nano-size effect and high specific surface energy of graphene and its derivatives, it is easy to agglomerate in the HDPE matrix, which not only cannot give full play to the excellent performance of graphene, but also reduces the performance of the matrix resin.

Method used

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  • High-density polyethylene resin-based nanocomposite material and preparation method thereof
  • High-density polyethylene resin-based nanocomposite material and preparation method thereof
  • High-density polyethylene resin-based nanocomposite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Preparation of graphite oxide: Add 115mL of 98% concentrated sulfuric acid into a dry beaker, cool it to below 4°C with an ice-water bath, add 5gNGP and 2.5gNaNO under vigorous stirring 3 mixture, and then slowly add 15g of KMnO 4 , and control the temperature of the reaction system below 20°C, continue to stir the reaction for 5 minutes, then raise the temperature of the system to 35±3°C, stir at constant temperature for 30 minutes, then add 230mL of deionized water under vigorous stirring. Transfer the above system into a heated oil bath, keep the system reaction temperature at 98°C for 15 minutes, then add 355mL of hot deionized water for high-temperature hydrolysis, add 30mL of H 2 o 2 Neutralize the unreacted strong oxidant, suction filter while it is hot, wash thoroughly with 5% hydrochloric acid and deionized water, and dry in a vacuum oven at 90°C for 24 hours to obtain graphite oxide. Graphene oxide is obtained by ultrasonically dispersing graphite oxide.

...

Embodiment 2

[0057] The preparations of ethylenediamine-grafted graphene oxide and acidified carbon nanotubes were the same as in Example 1. In the preparation process of high-density polyethylene resin-based nanocomposites, the mixture of 0.075g of ethylenediamine grafted graphene oxide and acidified carbon nanotubes and 14.925g of HDPE-g-MAH were subjected to the same process as in Example 1 After melt blending, a high-density polyethylene resin-based nanocomposite material with a filler mass content of 0.5% was obtained.

[0058] The test sample preparation and test conditions of the high-density polyethylene resin-based nanocomposite are the same as in Example 1, and the tensile and impact test results are shown in Table 1. It can be seen that compared with pure HDPE-g-MAH, the tensile strength and impact strength of the HDPE resin-based nanocomposites using ethylenediamine-grafted graphene oxide and acidified carbon nanotube mixtures as fillers are improved, respectively up 16.1% and...

Embodiment 3

[0064] The preparations of ethylenediamine-grafted graphene oxide and acidified carbon nanotubes were the same as in Example 1. In the preparation process of high-density polyethylene resin-based nanocomposites, the mixture of 0.1125g of ethylenediamine grafted graphene oxide and acidified carbon nanotubes and 14.8875g of HDPE-g-MAH were subjected to the same process as in Example 1 After melt-blending, a high-density polyethylene resin-based nanocomposite material with a filler mass content of 0.75% was obtained.

[0065] The test sample preparation and test conditions of the high-density polyethylene resin-based nanocomposite are the same as in Example 1, and the tensile and impact test results are shown in Table 1. It can be seen that the tensile strength and impact strength of the HDPE resin-based nanocomposites using a mixture of ethylenediamine-grafted graphene oxide and acidified carbon nanotubes are improved, respectively, compared with pure HDPE-g-MAH 11.9% and 20%. ...

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Abstract

The invention relates to a high density polyethylene composite material and in particular relates to a high density polyethylene resin-based nano composite material and a preparation method thereof. The high density polyethylene resin-based nano composite material is prepared by performing melt blending on the following components in parts by mass: 0.25-1 part of fillers and 99-99.75 parts of high density polyethylene grafting maleic anhydride resin, wherein the fillers comprise graphene and carbon nano tubes. The nano composite material is low in cost, simple in preparation method, easy to operate and wide in practicability; a synergistic effect of the graphene and carbon nano tubes is fully exerted, and an obvious synergistic enhancement and toughening effect is achieved on an HDPE matrix, and the obtained nano composite material has excellent performance during single filler modification; and moreover, the high density polyethylene resin-based nano composite material has excellent mechanical property and thermal properties, the performance requirement is met, and the amount of the needed fillers is small.

Description

technical field [0001] The invention relates to a composite material of high-density polyethylene material, especially a high-density polyethylene resin-based nanocomposite material and a preparation method thereof. Background technique [0002] High-density polyethylene (HDPE) is one of the five general-purpose plastics. It is widely used in fields such as films, pipes, and packaging because of its low price, high chemical stability, and easy processing and molding. However, the low tensile strength, insufficient hardness and poor heat resistance stability of HDPE limit its application in some fields. In order to broaden the application field of HDPE and increase the added value of HDPE, the modification of HDPE is the main research direction of HDPE at present. Among them, melt blending has simple technology and is suitable for large-scale industrial production, so it has become the main technical method of HDPE modification. Among the many HDPE melt blending methods, ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/06C08K9/04C08K9/02C08K3/04C08K7/24
CPCC08K3/04C08K7/24C08K9/02C08K9/04C08K2201/011C08L2201/08C08L51/06
Inventor 卞军王刚蔺海兰周醒王正君
Owner XIHUA UNIV
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