What is the role of antioxidants in BOPP colored synthetic paper?

The main function of antioxidants in BOPP colored synthetic paper is to prevent material oxidation and degradation, maintain its excellent performance, and extend its service life. Here is a detailed explanation:

1、 Overview of BOPP color synthetic paper

BOPP color thermal sensitive synthetic paper is a special paper that combines BOPP (biaxially oriented polypropylene film) substrate and thermal sensing technology. It uses BOPP film as the substrate and is coated with a colored heat sensitive material containing a heat sensitive agent. This type of paper, through thermal printing technology, can quickly produce color images or text when heated, without the need for ink or ribbon, and has a fast and instant printing effect.

2、 The mechanism of action of antioxidants

Antioxidants are a type of chemical substance that, when present in small amounts in polymer systems, can delay or inhibit the oxidation process of polymers, thereby preventing their aging and extending their service life. They are also known as "anti-aging agents". Antioxidants can effectively inhibit or reduce the thermal oxidation reaction rate of plastic macromolecules in polymer materials such as plastics, synthetic fibers, and rubber, and delay the thermal and oxidative degradation process of plastic resins. The specific mechanism of action includes:

Eliminating free radicals: Antioxidants can eliminate newly generated free radicals, thereby preventing the chain reaction of free radicals from occurring. This helps prevent the breakage and degradation of polymer molecular chains.

Decomposing hydrogen peroxide: Antioxidants can also decompose hydrogen peroxide to generate stable inactive products, thereby avoiding the generation of more free radicals during the decomposition of hydrogen peroxide and further delaying the oxidation process of polymers.

3、 Application of antioxidants in BOPP color synthetic paper

During the production, storage, and use of BOPP colored synthetic paper, polypropylene materials may deteriorate due to the influence of heat, light, and oxygen conditions, resulting in reduced physical properties, poor appearance, and other issues. To address these issues, it is possible to improve and maintain the excellent properties of the original polypropylene material by adding antioxidants.

Improving heat resistance: Antioxidants can significantly enhance the heat resistance of BOPP colored synthetic paper, enabling it to maintain stable performance even in high temperature environments.

Extended service life: By delaying the oxidation process, antioxidants can extend the service life of BOPP colored synthetic paper, reducing performance degradation and damage caused by aging.

Keep colors bright: Antioxidants can also protect color sensitive materials from oxidation, thereby maintaining the color brightness and clarity of BOPP color synthetic paper.

In summary, antioxidants play an important role in BOPP colored synthetic paper, effectively preventing material oxidation and deterioration, maintaining its excellent performance, and extending its service life.