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什么才是可降解塑料的原材料呢?

什么才是可降解塑料的原材料呢?

来源网址:https://www.swjjkl.com/ 2021-06-07 16:11:01    

可降解塑料是指一类其制品的各项性能可满足使用要求,在保存期内性能不变,而使用后在自然环境条件下能降解成对环境无害的物质的塑料。通过优化选择生产原料和制作工艺,可降解塑料在数天或几个月的日晒雨淋及微生物的共同作用下,能逐步分 解成碎片,全部降解。可降解材料一般可分为光降解塑料、生物降解塑料、光-生物降解塑料和水降解塑料等四大类。在全球“禁塑”,环保意识增强的形势下,被视为传统一次性塑料的替代品。

Degradable plastics refer to a kind of plastics whose properties can meet the requirements of use, whose properties remain unchanged during the storage period, and can degrade into environmentally friendly substances under natural environmental conditions after use. By optimizing the selection of raw materials and production process, the degradable plastics can be gradually decomposed into fragments and completely degraded under the combined action of several days or months of sunlight, rain and microorganisms. Generally, degradable materials can be divided into four categories: Photo degradable plastics, biodegradable plastics, photo biodegradable plastics and water degradable plastics. In the situation of global "plastic ban" and enhanced environmental awareness, it is regarded as a substitute for traditional disposable plastics.
可降解塑料颗粒
根据可降解塑料的性质,其下游应用包括农林渔业、包装业、体育用品、卫生用品等领域。可降解塑料在农林渔业的应用包括地膜,保水材料,育苗钵,苗床,绳网,农药和农肥缓释材料等;可降解塑料在包装业的应用包括购物袋,垃圾袋,堆肥袋,一次性餐盒,方便面碗,缓冲包装材料等;可降解塑料在体育用品的应用包括高尔夫球场球钉和球座等;可降解塑料在卫生用品的应用包括妇女卫生用品,婴儿尿布,医用褥垫,一次性胡刀等。可降解塑料比传统高分子塑料更容易被自然环境分解,具有实用性、降解性和安全性。
According to the properties of degradable plastics, its downstream applications include agriculture, forestry and fishery, packaging industry, sporting goods, health products and other fields. The application of degradable plastics in agriculture, forestry and fishery includes plastic film, water retaining material, seedling bowl, seedbed, rope net, pesticide and slow-release material of agricultural fertilizer, etc; The application of degradable plastics in packaging industry includes shopping bags, garbage bags, composting bags, disposable lunch boxes, instant noodles bowls, cushioning packaging materials, etc; The application of degradable plastics in sporting goods includes golf course studs and tee; The application of degradable plastics in sanitary products includes women's sanitary products, baby diapers, medical mattresses, disposable Hu Dao, etc. Degradable plastics are more easily decomposed by the natural environment than traditional polymer plastics, and have practicability, degradability and safety.
可降解塑料即便意外进入自然环境,也不至于产生大的危害,并且可以间接有助于收集更多的有机废物,同时降低有机废物对塑料废物机械回收的影响。按照降解方式分类,可降解材料一般可分为光降解塑料、生物降解塑料、光-生物降解塑料和水降解塑料等四大类。
Even if degradable plastics enter the natural environment accidentally, it will not cause great harm, and can indirectly help to collect more organic waste, and reduce the impact of organic waste on the mechanical recovery of plastic waste. According to the types of degradation, degradable materials can be divided into four categories: photodegradable plastics, biodegradable plastics, photo biodegradable plastics and water degradable plastics.
这些可降解材料的定义分别为:(1)光降解塑料指被光照射后能发生降解的塑料。制品一旦埋入土中,失去光照,降解过程则停止。(2)生物降解塑料是由自然界存在的微生物如细菌、霉菌(真菌)和藻类的作用而引起降解的塑料。(3)水降解塑料在塑料中添加吸水性物质,用完后弃于水中即能溶解掉。(4)光-生物降解塑料是一种比较理想的降解塑料,是对光降解塑料的光降解机理以及生物降解塑料的生物降解机理的结合应用。至有一些劣质产品还会助燃。
These degradable materials are defined as: (1) photodegradable plastics are plastics that can degrade after being irradiated by light. Once the product is buried in the soil, the degradation process will stop when the light is lost( 2) Biodegradable plastics are plastics degraded by natural microorganisms such as bacteria, fungi and algae( 3) Water degradable plastics add water absorbent materials to the plastics, which can be dissolved when discarded in water( 4) Photodegradable plastics is a kind of ideal degradable plastics, which is the combination of photodegradation mechanism of photodegradable plastics and biodegradation mechanism of biodegradable plastics. Even some inferior products will support combustion.