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什么是可降解塑料?

什么是可降解塑料?

来源网址:https://www.swjjkl.com/ 2022-05-19 16:25:00    

什么是可降解塑料?
What is degradable plastic?
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。而可降解塑料和不可降解塑料区别在于,可降解塑料在土壤中,半年内降解为二氧化碳和水,不会造成白色污染。
Degradable plastics refer to a kind of plastics whose properties can meet the use requirements and remain unchanged during the storage period, but can degrade into environmentally harmless substances under natural environmental conditions after use. The difference between degradable plastics and non degradable plastics is that degradable plastics degrade into carbon dioxide and water in soil within half a year, which will not cause white pollution.
新型可降解塑料主要成分:
Main components of new degradable plastics:
新型可降解塑料主要成分:聚乙烯醇+淀粉+光敏剂+其他。
Main components of new degradable plastics: polyvinyl alcohol + starch + photosensitizer + others.
添加聚乙烯醇相对于聚乙烯要更容易降解;
Adding polyvinyl alcohol is easier to degrade than polyethylene;
添加淀粉是能够促进塑料在土壤中生物降解的速度;
The addition of starch can promote the biodegradation of plastics in soil;
添加光敏剂可以通过吸收阳光来加速塑料的降解。
Adding photosensitizers can accelerate the degradation of plastics by absorbing sunlight.
所以,本次研究的这种新型可降解塑料相对于前几种更容易降解,而且它降解后塑料成分分解成碳和水等,简单分子结构的物质也比较环保。
Therefore, this new degradable plastic in this study is easier to degrade than the previous ones, and after degradation, the plastic components are decomposed into carbon and water, and the substances with simple molecular structure are also more environmentally friendly.
可降解塑料种类:
Types of Degradable Plastics:
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。
Photodegradable plastics, biodegradable plastics, light, oxidation \ biodegradable plastics, carbon dioxide based biodegradable plastics, thermoplastic starch resin degradable plastics.
可降解塑料袋配方及生产工艺:
Degradable plastic bag formula and production process:
为了提供一种厚度适中,拉伸强度大,且生产工艺简单,降解时间可调节的可降解塑料袋,我们研究出可降解塑料袋配方及生产工艺。它包括65-80%碳酸钙粉、1-3%无机粉体、1-3%高填充粉和14-35%聚乙烯;其中碳酸钙粉由80%碳酸钙颗粒、15%韧性颗粒、2%消泡剂和3%填充颗粒组成。
In order to provide a degradable plastic bag with moderate thickness, high tensile strength, simple production process and adjustable degradation time, we studied the formula and production process of degradable plastic bag. It includes 65-80% calcium carbonate powder, 1-3% inorganic powder, 1-3% high filling powder and 14-35% polyethylene; Calcium carbonate powder is composed of 80% calcium carbonate particles, 15% ductile particles, 2% defoamer and 3% filled particles.
优点:可降解、耐高温、防燃、无味、卫生;
Advantages: degradable, high temperature resistant, flameproof, tasteless and hygienic;
降解时间:具体的降解时间我们可以根据碳酸钙粉与聚乙烯之间的比例进行调节,其中聚乙烯含量越高,可降解的时间越长,而采用此配方工艺生产的塑料产品与传统塑料包装相比,其快降解的时间为120小时。
Degradation time: the specific degradation time can be adjusted according to the ratio between calcium carbonate powder and polyethylene. The higher the polyethylene content, the longer the degradable time. Compared with traditional plastic packaging, the plastic products produced by this formula process have a fast degradation time of 120 hours.
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