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Graphene oxide high-barrier composite film and preparation method thereof

A graphene composite and composite film technology, applied in the fields of electronic packaging and food, can solve the problems of damage and the decrease of the barrier performance of the oxygen absorber-containing film, and achieve the effect of avoiding agglomeration, increasing the oxygen barrier performance, and improving the oxygen barrier performance.

Active Publication Date: 2021-06-29
宜兴博雅新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the existence of the oxygen absorbing agent, some crystallization and orientation structures existing in the original matrix polymer will be destroyed, and the interaction between the molecular chains in the matrix polymer will also be reduced to produce a larger free volume. The incompatibility of the polymer matrix can lead to the presence of some voids in the film, resulting in a decrease in the barrier properties of the film containing the oxygen absorber

Method used

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  • Graphene oxide high-barrier composite film and preparation method thereof
  • Graphene oxide high-barrier composite film and preparation method thereof
  • Graphene oxide high-barrier composite film and preparation method thereof

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Effect test

Embodiment 1

[0029] A graphene oxide high-barrier composite film and a preparation method thereof. The preparation raw materials are, in parts by mass, 92 parts of PET, 8 parts of oxygen-absorbing graphene oxide composite particles, and 0.08 parts of cobalt neodecanoate. The raw materials of the oxygen-absorbing graphene oxide composite particles are 10 parts by mass of 1,4-butene diol and 90 parts of graphene oxide.

[0030] The preparation method is:

[0031] (1) Dissolve 0.5g of graphene oxide in 500ml of ethanol, and ultrasonicate for 30min at 25°C until a uniform brown solution is obtained; at the same time, dissolve 0.5g of 1,4-butenediol (oxygen absorber) in 50ml of ethanol, Sonicate at room temperature for 15 minutes until 1,4-butenediol is completely dissolved. Mix the two solutions in a certain ratio (the ratio of mass parts is 1,4-butene diol: graphene oxide = 1:9), mechanically stir at 40°C for more than 4 hours, ultrasonicate the reaction solution for 30 minutes, and then ref...

Embodiment 2

[0034] The proportioning ratios of Example 2, Example 3, and Comparative Examples 1-4 are shown in Table 1, and the preparation method refers to Example 1.

[0035] Table 1 Formula table of graphene oxide high barrier PET composite film

[0036]

[0037]

Embodiment 4-5

[0038] Embodiment 4-5, comparative example 5-6, the formula of reference example 2, 95 parts of PET resins, 5 parts of oxygen-absorbing type graphene oxide composite particles, 0.05 part of catalysts, wherein the oxygen-absorbing type graphene oxide composite particles absorb The ratio of oxygen agent and graphene oxide is shown in Table 2.

[0039] Table 2 Formula table of oxygen-absorbing graphene oxide composite particles

[0040] experiment oxygen absorber Graphene oxide Example 2 10 90 Example 4 6 94 Example 5 20 80 Comparative example 5 50 50 Comparative example 6 70 30

[0041]For Comparative Example 7 and Examples 7-9, PEN resin was selected, and the preparation method refers to Example 1, and the specific formula is shown in Table 3.

[0042] Table 3 Graphene oxide high barrier PEN composite film formula table

[0043]

[0044]

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Abstract

The invention relates to a graphene oxide high-barrier composite film and a preparation method thereof, belonging to the technical field of food and electronic packaging. The graphene oxide high-barrier composite film comprises the following raw material components by mass: 92-97 parts of polyester resin, 3-8 parts of oxygen-absorbing graphene oxide composite particles and 0.03-0.08 part of a catalyst, wherein the oxygen-absorbing graphene oxide composite particle is prepared from the following raw materials in parts by mass: 6 to 20 parts of an oxygen absorbent, namely 1, 4-butylene glycol and 80 to 94 parts of graphene oxide. According to the invention, the oxygen absorbent is combined with hydroxyl graphene through a hydrogen bond, and then a film is formed through a double-drawing process, so layered hydroxyl graphene is subjected to two-dimensional orientation and can be uniformly distributed in the film in a layered manner, the length of an oxygen passage is increased, and oxygen entering the passage can be further absorbed through the oxygen absorbent on the surface of graphene oxide; and therefore, a better oxygen barrier effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of food and electronic packaging, and in particular relates to a graphene oxide high-barrier composite film, which can be reliably applied to an anaerobic packaging window, especially for packaging of food and electronic components. Background technique [0002] At present, polymer high barrier materials are mainly used in food and pharmaceutical packaging, electronic device packaging, solar cell packaging, and OLED packaging. Food and pharmaceutical packaging is currently the most widely used field of high barrier materials. The main reason is to prevent the oxygen in the air from entering the packaging and deteriorating food and medicines, which greatly reduces their shelf life. For food and pharmaceutical packaging, the barrier requirements are generally not particularly high, and the oxygen transmission rate of the barrier material is required to be lower than 100cm 3 / m 2 / day. [0003] With the rap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K9/12C08K9/04C08K3/04C08K5/053C08J5/18
CPCC08J5/18C08J2367/02C08K9/12C08K9/04C08K3/042C08K5/053
Inventor 刘振国陈妍慧宫蕾罗亚平王川彬
Owner 宜兴博雅新材料科技有限公司
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