能自我修复的材料 Making Materials That Heal Themselves

未能成功加载,请稍后再试
0/0

When things break, you throw them out.

Whether it's your cheap plastic Tupperware or your pricy prescription glasses, it's not going to fix itself, right?

But what if it could?

Scientists are inventing materials that repair themselves, or "self-heal" so that someday all kinds of thingsfrom tires to tools to sidewalkswill be able to last indefinitely.

One kind of material that's being developed is a kind of rubber that can stitch itself back together.

If you cut into it, hold the two pieces together, they'll reattach! Eventually.

Scientists at Germany's Leibniz Institute of Polymer Research created this technology in 2015, in the hopes of inventing car and truck tires that can fix themselves.

And they did it by making one pretty simple switch in the chemistry of the tires we currently use.

Tires, it turns out, aren't just pure rubber.

Instead, sulfur is usually added to the rubber, to make its molecular bonds stronger.

下载全新《每日英语听力》客户端,查看完整内容