日本高清色视频在线视频在,国产香蕉97碰碰视频碰碰看,丰满少妇av无码区,精品无码专区在线,久久无码专区免费看,四虎欧美精品永久地址99,亚洲色无码一区二区三区

 
 
 

Plastic for 3D Printers May Become Eco-friendly

VOA 2016-04-22 14:39

分享到

 

Get Flash Player

As if we didn’t have enough of it, the new must-have gadget - the consumer-grade 3-D printer - works with plastic. Researchers in Belgium say they have developed a new environmentally-friendly plastic, suitable not only for 3-D printers, but also for medicinal use.

Since the early 1980s, 3-D printers have evolved from highly sophisticated lab instruments into affordable consumer items, enabling their owners to create their own increasingly complex designs.

Some futurologists see this as the beginning of the third industrial revolution, but environmentalists fear that the last thing the world needs is more nearly immortal plastic objects in landfills and oceans.

The main culprit is non-biodegradable petroleum-based plastic. There are environmentally friendly alternatives like polylactic acid plastic, or PLA, based on sugar from maize and sugarcane -- but they are more expensive.

Michiel Dusselier, a researcher at the University of Leuven, said scientists have found a way to manufacture PLA faster and cheaper than before.

“Instead of a two-step process currently, it's a one-step process. Our process runs about 100 degrees centigrade lower in temperature and our productivities, which is kind of how much product can you make per volume of reactor per hour, are much higher and our product is also much cleaner, so we don't make side products,” said Dusselier.

PLA is one of the few types of plastic suitable not only for 3-D printers but for some biodegradable medical items such as suture threads.

“I think there will now be much more players in the market giving you the product at much lower prices and I think this will maybe really be the start of the PLA into the bio-plastic business,” said Bert Sels, a professor at the University of Leuven.

Although PLA is not suitable for all applications, a petrochemical company is already developing the new process for mass production, raising hopes that more plastic products will soon be made of biodegradable chemicals.

Vocabulary

non-biodegradable; 不可生物降解的

(來源:VOA 編輯:Julie)

 

分享到

中國日報(bào)網(wǎng)英語點(diǎn)津版權(quán)說明:凡注明來源為“中國日報(bào)網(wǎng)英語點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國日報(bào)網(wǎng)簽署英語點(diǎn)津內(nèi)容授權(quán)協(xié)議的網(wǎng)站外,其他任何網(wǎng)站或單位未經(jīng)允許不得非法盜鏈、轉(zhuǎn)載和使用,違者必究。如需使用,請與010-84883561聯(lián)系;凡本網(wǎng)注明“來源:XXX(非英語點(diǎn)津)”的作品,均轉(zhuǎn)載自其它媒體,目的在于傳播更多信息,其他媒體如需轉(zhuǎn)載,請與稿件來源方聯(lián)系,如產(chǎn)生任何問題與本網(wǎng)無關(guān);本網(wǎng)所發(fā)布的歌曲、電影片段,版權(quán)歸原作者所有,僅供學(xué)習(xí)與研究,如果侵權(quán),請?zhí)峁┌鏅?quán)證明,以便盡快刪除。

中國日報(bào)網(wǎng)雙語新聞

掃描左側(cè)二維碼

添加Chinadaily_Mobile
你想看的我們這兒都有!

中國日報(bào)雙語手機(jī)報(bào)

點(diǎn)擊左側(cè)圖標(biāo)查看訂閱方式

中國首份雙語手機(jī)報(bào)
學(xué)英語看資訊一個都不能少!

關(guān)注和訂閱

本文相關(guān)閱讀
人氣排行
熱搜詞
 
 
精華欄目
 

閱讀

詞匯

視聽

翻譯

口語

合作

 

關(guān)于我們 | 聯(lián)系方式 | 招聘信息

Copyright by chinadaily.com.cn. All rights reserved. None of this material may be used for any commercial or public use. Reproduction in whole or in part without permission is prohibited. 版權(quán)聲明:本網(wǎng)站所刊登的中國日報(bào)網(wǎng)英語點(diǎn)津內(nèi)容,版權(quán)屬中國日報(bào)網(wǎng)所有,未經(jīng)協(xié)議授權(quán),禁止下載使用。 歡迎愿意與本網(wǎng)站合作的單位或個人與我們聯(lián)系。

電話:8610-84883645

傳真:8610-84883500

Email: languagetips@chinadaily.com.cn

<strong id="xdwva"><div id="xdwva"></div></strong>
<label id="xdwva"></label>

<thead id="xdwva"></thead>
    <label id="xdwva"></label>

  1. 日本高清色视频在线视频在,国产香蕉97碰碰视频碰碰看,丰满少妇av无码区,精品无码专区在线,久久无码专区免费看,四虎欧美精品永久地址99,亚洲色无码一区二区三区