www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

Global EditionASIA 中文雙語Fran?ais
China
Home / China / Innovation

Across China: Chinese researchers develop new frost-resistant sand-control agent

Xinhua | Updated: 2025-02-19 14:58
Share
Share - WeChat

LANZHOU -- A Chinese research team has developed a chemical sand-fixation material suitable for use in cold desert regions, which is expected to serve as a new tool for sand control and desertification prevention in such areas.

The application of chemical materials to stabilize shifting sands is one of the primary methods of desertification control. This approach involves the use of adhesive chemical substances to bind loose sand particles together, thereby mitigating encroachment by wind-blown sand.

However, conventional chemical sand-fixation materials have been mainly designed for hot and arid regions. In colder, high-altitude or high-latitude desert regions, such as the Qinghai-Xizang Plateau and the Mongolian Plateau, which are located in Northwest, Southwest and North China, cooler temperatures often render traditional methods of sand control ineffective.

Researchers from the Northwest Institute of Eco-Environment and Resources (NIEER), under the Chinese Academy of Sciences, modified cellulose acetate-based waterborne polyurethane sand-fixing agents by incorporating glycerol triglycidyl ether and glycerin to enhance frost resistance.

Notably, cellulose acetate can be produced from the cellulose extracted from crop straw.

Experiments have demonstrated that this novel frost-resistant sand-fixation agent exhibits excellent degradability, with the primary volatile substances released during thermal degradation being water vapor, ammonia and carbon dioxide -- ensuring no environmental pollution.

In addition, under low-temperature conditions of minus 20 degrees Celsius, the consolidation strength of this sand-fixation agent remains stable, a critical feature necessary for high-altitude and high-latitude desert regions.

Field applications in Gonghe county, Northwest China's Qinghai province, have proven that this agent not only effectively stabilizes shifting sands but also promotes plant growth, thus providing robust support for ecological restoration in desert areas.

"The environmental conditions in cold desert regions are extremely harsh. Sand-fixation materials must not only possess strong low-temperature resistance but also exhibit excellent oxygen permeability and hydrophilic antifreeze properties -- all without hindering the germination of plant seeds," said Liu Benli, a researcher from the NIEER.

Industrialization of this scientific research achievement will also promote the development of the environmentally friendly sand-fixation materials industry, Liu added.

Top
BACK TO THE TOP
English
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: chineseoldman色老头videos | 清纯唯美综合网 | 久久99久久99精品观看 | 视频在线二区 | 韩国美女爽快一级毛片黄 | 99久久精品毛片免费播放 | 免费看男女做好爽好硬视频 | 99久久99这里只有免费费精品 | 国产免费怡红院视频 | 成人公开免费视频 | 91香蕉国产亚洲一区二区三区 | 中文无线乱码二三四区 | 亚洲国产精品久久久久 | 韩日黄色 | 日韩精品福利视频一区二区三区 | 新体操真 | 欧美色黄毛片 | 免费嗨片 | 日韩视频中文字幕 | 精品国产高清久久久久久小说 | 精品在线99 | 国产亚洲欧美成人久久片 | 欧美日本韩国一区二区 | 91国内精品久久久久免费影院 | 麻豆国产视频 | 成人全黄三级视频在线观看 | 国产在线观看精品 | 男女同床爽爽视频免费 | 国产一精品一aⅴ一免费 | 成人中文字幕在线 | 午夜性刺激免费视频观看不卡专区 | www.91久久 | 成人免费福利片在线观看 | 成人亚州 | 欧美私人网站 | 91久久精品国产一区二区 | 国产精品99久久久 | 在线人成精品免费视频 | 亚洲欧美日韩另类精品一区二区三区 | 狠狠澡夜夜澡人人爽 | 九九在线精品视频播放 |