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可降解塑料的优势有哪些?

可降解塑料的优势有哪些?

来源网址:https://www.swjjkl.com/ 2021-12-06 18:24:48    

可降解塑料有多种新型塑料:光降解型塑料、生物降解型塑料、光、氧化\生物降解性塑料、二氧化碳基生物降解塑料、热塑性淀粉树脂降解塑料。

There are many new types of Degradable Plastics: photodegradable plastics, biodegradable plastics, light, oxidation \ biodegradable plastics, carbon dioxide based biodegradable plastics and thermoplastic starch resin degradable plastics.
聚合物的可降解塑料是指因化学和物理因素引起的聚合的大分子链断裂的过程。聚合物曝露于氧、水、射线、化学品、污染物质、机械力、昆虫等动物以及微生物等环境条件下的大分子链断裂的降解过程被称为环境降解。降解使聚合物分子量下降,聚合物材料物性降低,直到聚合物材料丧失可使用性,这种现象也被称为聚合物材料的老化降解。
Polymer degradable plastics refer to the process of polymeric macromolecular chain fracture caused by chemical and physical factors. The degradation process of macromolecular chain breaks when polymers are exposed to environmental conditions such as oxygen, water, radiation, chemicals, pollutants, mechanical forces, insects and microorganisms is called environmental degradation. Degradation reduces the molecular weight of polymer and the physical properties of polymer materials until the polymer materials lose their usability. This phenomenon is also called aging degradation of polymer materials.
聚合物的老化可降解塑料和聚合物的稳定性有直接关系。聚合物的老化降解缩短塑料的使用寿命。为此,自塑料问世以来,科学家就致力于对这类材料的防老,即稳定化的研究,以制得高稳定性的聚合物材料,而各国的科学家也正利用聚合物的老化降解行为竞相开发环境降解塑料。
The aging of polymers is directly related to the stability of degradable plastics. The aging degradation of polymers shortens the service life of plastics. Therefore, since the advent of plastics, scientists have been committed to the study of anti-aging, i.e. stabilization, of such materials in order to prepare high stability polymer materials. Scientists from various countries are also competing to develop environmentally degradable plastics by using the aging and degradation behavior of polymers.
可降解塑料的主要应用领域有:农用地膜、各类塑料包装袋、垃圾袋、商场购物袋以及一次性餐饮具等。
The main application fields of degradable plastics include agricultural plastic film, various plastic packaging bags, garbage bags, shopping bags in shopping malls and disposable tableware.
可降解塑料原理:环境降解塑料的降解过程主要涉及生物降解,光降解和化学降解,这三种主要降解过程相互间具有增效、协同和连贯作用。例如,光降解与氧化物降解常同时进行并互相;生物降解更易发生在光降解过程之后。
Principle of Degradable Plastics: the degradation process of environmental degradable plastics mainly involves biodegradation, photodegradation and chemical degradation. These three main degradation processes have synergistic, synergistic and coherent effects on each other. For example, photodegradation and oxide degradation often occur simultaneously and interact with each other; Biodegradation is more likely to occur after the photodegradation process.
可降解塑料的优点分析:
Analysis of advantages of Degradable Plastics:
实用性:具有与同类普通塑料相当或相近的应用性能和卫生性能。
Practicability: it has the application performance and hygienic performance equivalent to or similar to that of similar ordinary plastics.
降解性:在完成使用功能后,能在自然环境条件下较快降解,成为易被环境利用的碎片或碎末,Z终回归自然。
Degradability: after completing the use function, it can degrade rapidly under the natural environmental conditions, become fragments or debris that are easy to be used by the environment, and finally return to nature.
安性:降解过程中产生和降解后残留的物质对环境无害或无潜在危害。
Safety: substances generated during degradation and remained after degradation are harmless or have no potential harm to the environment.
经济性:价格与同类普通塑料持平或略高。
Economy: the price is the same as or slightly higher than that of similar ordinary plastics.
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