日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Innovation

Chinese scientists develop fireproof, waterproof paper

By CHENG YINGQI | China Daily | Updated: 2017-01-06 07:34

Chinese scientists develop fireproof, waterproof paper

In January 2015, a fire in one of Russia's largest university libraries damaged more than 1 million historical documents, an incident which some media described as a "cultural Chernobyl".

Important documents of our age can probably avoid the same fate in the future thanks to a new fire-resistant paper developed by a team of scientists at the Shanghai Institute of Ceramics affiliated to the Chinese Academy of Sciences.

Zhu Yingjie, a researcher from the institute, and his team developed a set of methods to produce paper with a new material, hydroxyapatite, the inorganic constituent of tooth enamel and bone.

The invention was reported on ACS Applied Materials and Interfaces, a peer-reviewed scientific journal of the American Chemical Society.

The inorganic material is both fire resistant and water resistant.

"Traditionally, paper is made of plant fibers, which are easily destroyed by liquid. Previous research attempts to produce waterproof paper found it was difficult to achieve fire retardancy and water repellency at the same time," Zhu said.

In 2013, a doctorate student of Zhu was preparing hydroxyapatite nanowires. While he wanted to filter out the water and continue the experiment, he found that instead of getting hydroxyapatite powder on the filter paper, a film formed on the paper.

The discovery inspired Zhu. He conducted more experiments to improve the material's physical properties.

"Traditional papermaking damages natural woods and damages the environment. Hydroxyapatite nanowires are an ideal building material for paper," Zhu said.

The newly published paper shows that the inorganic material behaves like paper, but with excellent thermal stability and with astonishing mechanical wear resistance, according to an anonymous referee of a peer reviewer of ACS Applied Materials and Interfaces, which was provided to China Daily.

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 色综合久久网 | 91久久久久久久久久 | 亚洲激情在线 | 一级特黄特色的免费大片视频 | 国产91精品一区二区 | 亚洲视频在线观看 | 国产亚洲精品久久久久久无几年桃 | 国产精品成人一区 | 亚洲午夜激情 | 亚洲国产精品久久久久 | 中文字幕久久久 | 在线免费观看成年人视频 | 黄色特一级片 | 美女一区二区视频 | h片在线免费看 | 中文在线观看视频 | 午夜成人影片 | 黄色高潮视频 | www麻豆| 国产成人午夜高潮毛片 | 精品视频区 | 国产日韩中文字幕 | 亚洲国产精品久久久久久久 | 美国黄色大片 | 波多野结衣一区二区三区高清 | 亚洲欧美日韩天堂 | 热久久国产精品 | 一级片在线观看免费 | 欧美精品一区二区三区四区 | 生猴子在线观看免费视频 | 丁香花五月激情 | 久草精品在线 | 黄色影院在线观看 | 亚洲久久在线 | 日本大片在线 | 欧美激情天堂 | 经典三级在线视频 | 四虎永久免费网站 | 中文天堂在线观看 | 婷婷激情四射网 | 欧美区在线观看 |