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可降解颗粒刀叉如何做成的?

可降解颗粒刀叉如何做成的?

来源网址:http://www.swjjkl.com 2019-09-06 20:02:42    

  一次性刀叉和勺子是一次性使用后就扔掉的刀叉和勺子,包括饭盒和筷子。早期对于泡沫塑料制品,没有降解,对环境造成了很大的污染,出现了“白色污染”。一次性餐具中的筷子大多是木制的,这浪费了大量的木材,导致大片的森林被砍伐。一次性汤匙用于PVC制品,不利于健康。后来一次性餐具使用更加广泛,如淀粉,一般是可降解的。

  Disposable knives and forks and spoons are knives and forks and spoons thrown away after disposable use, including lunch boxes and chopsticks. In the early stage, there was no degradation of foamed plastic products, which caused great pollution to the environment, resulting in "white pollution". Chopsticks in disposable tableware are mostly made of wood, which wastes a lot of wood and leads to large areas of forest being cut down. Disposable spoon used in PVC products is not conducive to health. Later disposable tableware was more widely used, such as starch, which was generally degradable.
可降解颗粒
  一次性刀叉和勺子是由生物新材料制成的,这些材料已经广泛应用于医疗领域,如人工关节、牙科植入物和人工心脏瓣膜。可生物降解材料的绿色领袖,淀粉基生物降解塑料,是一种通过改性淀粉制成的塑料制品,嫁接反应并与其他聚合物混合,可取代通用塑料行业,可以用作包装材料,防震材料,塑料薄膜,食品容器,玩具等等。淀粉的性质与淀粉的相对分子量、支链长度和直链淀粉与直链淀粉的比例有关。实验表明,高直链淀粉含量的淀粉更适合塑料的制备,该产品具有良好的机械性能目前淀粉塑料的力学性能已基本实现了传统塑料的标准,但由于淀粉本身具有吸湿性,在潮湿的环境下材料会导致严重的水的力学性能下降,淀粉含量越高,更严重的问题,有些淀粉塑料甚至可以和水混合。
  Disposable knives, forks and spoons are made of new biological materials, which have been widely used in medical fields, such as artificial joints, dental implants and artificial heart valves. The green leader of biodegradable materials, starch-based biodegradable plastics, is a kind of plastic products made from modified starch. Grafting reaction and mixing with other polymers can replace the general plastic industry. It can be used as packaging materials, shock-proof materials, plastic film, food containers, toys and so on. The properties of starch are related to the relative molecular weight of starch, the length of amylopectin and the ratio of amylose to amylose. Experiments show that starch with high amylose content is more suitable for the preparation of plastics. The product has good mechanical properties. At present, the mechanical properties of starch plastics have basically achieved the standard of traditional plastics. However, due to the moisture absorption of starch itself, the mechanical properties of materials in humid environment will lead to serious water degradation, and the more starch content. Higher, more serious problems, some starch plastics can even be mixed with water.
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