伴隨著大家對塑料包裝的日益青睞，可降解材料的需求慢慢提升。大家逐漸尋找并開發(fā)一些可持續(xù)發(fā)展或可綠色生態(tài)循環(huán)的環(huán)境友好材料，生物可降解塑料當是其中為環(huán)境保護、具備發(fā)展前途的綠色材料之一，接下來我們就來了解一下常用的生物降解塑料。

With the increasing popularity of plastic packaging, the demand for degradable materials is slowly increasing. We are gradually looking for and developing some environmentally friendly materials that can achieve sustainable development or green ecological cycle. Biodegradable plastics should be one of the promising green materials for environmental protection. Next, let's learn about the commonly used biodegradable plastics.

在規(guī)定自然環(huán)境標準下，通過一段時間和包括一個或大量步驟，造成材料化學構造的明顯變化而損失某些特性（如完整性、分子量、構造或機械強度）和/或產(chǎn)生破碎的塑料。應使用能體現(xiàn)特性變化的標準實驗方法開展檢測，并按溶解方式和使用周期時間明確其類別。降解塑料依照其設計的Z終溶解方式分為生物降解塑料、可堆肥塑料、光降解塑料、熱氧降解塑料生物降解塑料。

Under the specified natural environment standards, plastic that causes obvious changes in the chemical structure of the material over a period of time and includes one or a large number of steps, resulting in the loss of certain properties (such as integrity, molecular weight, structure or mechanical strength) and / or the generation of broken plastics. The standard test method that can reflect the change of characteristics shall be used for detection, and its category shall be determined according to the dissolution method and service cycle time. Degradable plastics can be divided into biodegradable plastics, Compostable Plastics, photodegradable plastics, thermooxidative degradable plastics and biodegradable plastics according to the designed z-final dissolution method.

在大自然如土壤或沙土等標準下，或特殊條件如堆肥化標準下或厭氧消化標準下或水性培養(yǎng)液中，由大自然存在的微生物如細菌、霉菌和海藻等功效引起溶解，并Z終完全溶解變?yōu)槎趸迹–O2）或/和甲烷（CH4）、水（H2O）以及所含元素的礦化碳酸鹽以及新的生物質的塑料。也就是通常所說的生物降解塑料。

Under natural standards such as soil or sandy soil, or under special conditions such as composting standards or anaerobic digestion standards or in aqueous culture medium, the microorganisms existing in nature such as bacteria, molds and algae will cause dissolution, and Z will eventually be completely dissolved into carbon dioxide (CO2) or / and methane (CH4), water (H2O), mineralized carbonate containing elements and plastic of new biomass. That is commonly referred to as biodegradable plastics.

生物降解顆粒降解塑料主要的市場定位是塑料包裝制品塑料薄膜、農用塑料薄膜、一次性包裝袋和一次性塑料餐具。對比傳統(tǒng)塑料包裝制品材料，新型降解材料成本費稍高。但是伴隨著環(huán)境保護意識的增強，人們愿意為保護生態(tài)環(huán)境而使用稍高的新型降解材料，環(huán)境保護意識的增強給生物降解新材料行業(yè)帶來了很大的發(fā)展機遇。

The main market positioning of biodegradable granular degradable plastics is plastic packaging products plastic film, agricultural plastic film, disposable packaging bags and disposable plastic tableware. Compared with traditional plastic packaging materials, the cost of new degradable materials is slightly higher. However, with the enhancement of environmental protection awareness, people are willing to use new biodegradable materials with slightly higher prices to protect the ecological environment. The enhancement of environmental protection awareness has brought great development opportunities to the biodegradable new materials industry.

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