Are Australian coins made of polypropylene?
聚丙烯（Polypropylene，简称PP）是一种半结晶的热塑性塑料。聚丙烯具有较高的耐冲击性，机械性质强韧，抗多种有机溶剂和酸碱腐蚀。聚丙烯在工业界有广泛的应用，是平常常见的高分子材料之一。澳大利亚的钱币也使用聚丙烯制作。
Polypropylene (PP) is a semi crystalline thermoplastic. Polypropylene has high impact resistance, strong mechanical properties, and resistance to various organic solvents and acid alkali corrosion. Polypropylene has a wide range of applications in the industry and is one of the commonly used polymer materials. Australian coins are also made of polypropylene.
经查阅，澳大利亚新版塑料钞票是以聚酯材料代替纸张，聚酯材料耐磨、不易折断、不怕揉洗且具有良好防伪特性，我们常说土澳，但是澳大利亚其实有很多创新发明，例如塑料纸币就是其中之一。1988年，世界上第一张流通的塑料纸币在澳大利亚发行。所以，澳大利亚纸币是可以“洗钱”的，就算一不小心跟着衣服一起丢进了洗衣机也完全不用担心！
After consulting, Australia's new polymer banknote are made of polyester material instead of paper. The polyester material is wear-resistant, not easy to break, not afraid of rubbing and washing, and has good anti-counterfeiting properties. We often say that Australia, but Australia actually has many innovations, such as plastic banknotes. In 1988, the world's first circulating plastic banknote was issued in Australia. So, Australian banknotes can be "laundered", even if accidentally thrown into the washing machine with clothes, there's no need to worry!
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