99久久精品国产一区二区三区_欧美vv_91视频啪啪_国产韩国精品一区二区三区_av日韩一区_亚洲国产精品aa在线看

186-5350-6629
Company News
當(dāng)前位置:

Analyze the deterioration of tetrabromobisphenol A

  來源:www.eastyoung.cn
In the process of system operation, various ion exchanges will often change the original performance of tetrabromobisphenol A. There are two reasons: the essence has changed and the chemical structure has been destroyed. Contaminated by foreign impurities.
At present, many fireproof materials in China are mainly used: expanded polystyrene board (eps), extruded polystyrene board (xps), polyurethane (pu), powdered polystyrene particles, inorganic thermal insulation mortar, bromine fire retardant and other series.
During the operation of the system, the structure is seriously damaged due to oxidation or degradation reaction, which is an irreversible deterioration, also known as deterioration.
In the application of tetrabromobisphenol A, the main reason for deterioration is that the material has oxidant. When the temperature is too high, the corrosion is more serious. If there are heavy metal ions, they will accelerate the deterioration due to catalysis. After oxidation, the color becomes lighter, the volume becomes larger, the friability and the volume exchange capacity decrease, but the mass exchange capacity changes little.
Strong alkalinity is used after being placed in a positive state. It is oxidized by liquid dissolved oxygen. During regeneration, the oxidant contained in the alkali is oxidized, and the strong alkaline quaternary ammonium group is degraded gradually, but the skeleton chain will not be broken. In chemical desalting, the degradation of strong alkalinity shows that the decomposition capacity of neutral salts, especially the exchange capacity, decreases.
With the development of society and the prosperity of economy, more and more high-rise buildings have been found in numerous large cities, and many problems have followed. The key factor in the fire resistance and fire prevention of high-rise buildings is the selection of tetrabromobisphenol A, and materials play a vital role in fire prevention.
China's investment in research on thermal insulation materials, thermal insulation systems, building energy conservation and fire protection performance is still far from enough, and research efforts are insufficient. There are few original things, and few people deeply analyze problems.
Edit: R
上一條:沒有了
下一條:沒有了
主站蜘蛛池模板: 成人午夜视频网站 | 在线观看国产免费高清不卡 | 日韩免费在线视频 | 成人九色 | 性69式视频在线观看免费 | 亚洲日本中文字幕 | 葫芦娃短视频下载 | 永久精品 | 国产精品免费一级在线观看 | 操免费视频 | 在线成人 | 日韩欧美一区二区三区四区 | 日韩视频在线播放 | 成人情趣视频 | 天天色天天射天天操 | www黄色大片| 欧美成人26uuu欧美毛片 | 波多野结衣亚洲一区 | 丁香婷婷成人 | 日韩在线播放第一页 | 男女激情爱爱 | 伊人伊人 | 可以免费看黄色 | 一区二区中文字幕 | 日韩一区二区在线视频 | 老色鬼久久AV综合亚洲健身 | 日韩不卡高清 | 久久免费播放视频 | 99国产精品2018视频全部 | 男人的天堂亚洲 | 成人久久精品一区二区三区 | 久爱视频www在线播放 | 欧美a级成人淫片免费看 | 香蕉久久久久久 | 国产亚洲精品国产一区 | 精品国产九九 | 亚洲成a人v大片在线观看 | 亚洲综合精品一区二区三区中文 | 毛片免费在线观看 | 成年人福利 | 国产欧美一区二区三区另类精品 |