色精品一区二区三区-色久阁-色久影院-色久综合大榴莲-国产成人精品亚洲一区-国产成人精品一区

ChineseEnglish Hotline:0571-86062609
Industry information current location:Home  > News > Industry information
Aerogel Click rate: Release time:2023-11-13 Information sources:Hangzhou Qiyao New Material Co.,Ltd.

The nanoscale particles and pores of Si02 aerogel, as well as the continuous spatial network structure, make it have very low thermal conductivity. The heat conduction of the material is mainly realized through convection, radiation and heat conduction, so it is necessary to reduce its thermal conductivity from the heat transfer path of the material.

Convection: When the diameter of the porosity in the aerogel material is less than 70nm, the air molecules in the porosity lose the ability to flow freely, and are relatively attached to the porosity wall, then the material is in an approximate vacuum state, and it is impossible to carry out thermal convection.

Radiation: Because the pores in the material are nanoscale pores and the material itself is very low volume density, so that the material internal stomata wall tends to be "infinite" for a few days, for every one of the stomata wall has the role of shielding hot plate, thus producing an effect close to "infinite shielding hot plate", so that the thermal radiation is minimized.

Heat conduction: The density of aerogel is very low, larger than the surface and the volume skeleton is loose, due to the existence of nearly infinite nanopore, heat flow in the solid can only be transmitted along the pore wall, and the nearly infinite pore wall constitutes the "infinite path" effect, making the ability of solid heat conduction drop to close to the minimum limit.

Copyright ? 2017 qiyaomaterial.com All Rights Reserved Copyright·Hangzhou Qiyao New Material Co.,Ltd. Zhejiang ICP No. 17034714-1
主站蜘蛛池模板: 性欧美极品另类 | 俄罗斯小屁孩cao大人免费 | 久久婷婷色一区二区三区 | 俄罗斯毛片基地 | 新天堂网| 久久99热精品 | 下农村女人一级毛片 | 三级理论手机在线观看视频 | 激情五月五月婷婷 | 色成人亚洲 | 大香伊人网 | 欧美天天性 | 亚洲精品成人久久久影院 | 在线免费黄色网址 | 成年人毛片网站 | 天天操天天干天天玩 | 天天色天天操天天射 | 六月婷婷精品视频在线观看 | 亚洲天堂最新地址 | 男女刺激性视频大片 | 亚洲人成毛片线播放 | 国产精品女仆装在线播放 | 一本到中文字幕高清不卡在线 | 精品一区二区三区在线视频 | 一级aaaaaa片毛片在线播放 | 72种姿势欧美久久久久大黄蕉 | 久久2017| 欧美性妇 | 免费一看一级毛片全播放 | 国产看片视频 | 日本人zzzwww色视频 | 久久福利青草精品资源 | 亚洲色图久久 | 欧美精品成人久久网站 | 男女性接交无遮挡免费看视频 | 国产欧美日韩综合精品无毒 | 日日夜夜爽 | 国产成人精品怡红院 | 免费成人黄色 | 国产欧美日韩电影 | 婷婷激情亚洲 |