CNT/PDMS composite membranes for H 2 and CH 4 gas separation

由 ty10086 提交于 周四, 08/26/2021 - 13:36
文章英文标题
CNT/PDMS composite membranes for H 2 and CH 4 gas separation
正文
Abstract(#br)Polydimethylsiloxane (PDMS) composites with different weight amounts of multi-walled carbon nanotubes (MWCNT) were synthesised as membranes to evaluate their gas separation properties. The selectivity of the membranes was investigated for the separation of H 2 from CH 4 gas species. Membranes with MWCNT concentrations of 1% increased the selectivity to H 2 gas by 94.8%. Furthermore, CH 4 permeation was almost totally blocked through membranes with MWCNT concentrations greater than 5%. Vibrational spectroscopy and X-ray photoelectron spectroscopy techniques revealed that upon the incorporation of MWCNT a decrease in the number of available Si–CH 3 and Si–O bonds as well as an increase in the formation of Si–C bonds occurred that initiated the reduction in CH 4 permeation. As a result, the developed membranes can be an efficient and low cost solution for separating H 2 from larger gas molecules such as CH 4 .
文章内容（英文）
Abstract(#br)Polydimethylsiloxane (PDMS) composites with different weight amounts of multi-walled carbon nanotubes (MWCNT) were synthesised as membranes to evaluate their gas separation properties. The selectivity of the membranes was investigated for the separation of H 2 from CH 4 gas species. Membranes with MWCNT concentrations of 1% increased the selectivity to H 2 gas by 94.8%. Furthermore, CH 4 permeation was almost totally blocked through membranes with MWCNT concentrations greater than 5%. Vibrational spectroscopy and X-ray photoelectron spectroscopy techniques revealed that upon the incorporation of MWCNT a decrease in the number of available Si–CH 3 and Si–O bonds as well as an increase in the formation of Si–C bonds occurred that initiated the reduction in CH 4 permeation. As a result, the developed membranes can be an efficient and low cost solution for separating H 2 from larger gas molecules such as CH 4 .
来源出处
Journal|[J]International Journal of Hydrogen EnergyVolume 38, Issue 25. 2013. PP 10494-10501
DOI
https://doi.org/10.1016/j.ijhydene.2013.05.162

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PDMS臻品推荐

PDMS-微流控基质材料-PDMS/道康宁SYLGARD184-聚二甲基硅氧烷/0.5KG(组)

产品说明书PDF自助在线看：http://www.pdmshub.com/sih

信息更新：

美国总工厂生产的0.5KG原始包装的PDMS延期至2021年9月16日后才能交货，默认我们将发国内库存的进口分装产品（02085925-0.5KG）；另受制于有机硅大幅涨价潮影响，2021年9月1日后将上调销售价格，另行通知。Dow Corning=道康宁=Dow SiL=陶氏，都是同一家公司。 2021.09.01更新

美国总工厂生产的0.5KG包装的PDMS恢复正常进口，合法正规，质量金标准，欢迎订购使用。并承诺从我司购买的皆为原厂包装,100%未开封,附带技术手册,非国产灌装仿制、非分装、非仿冒外包装产品,可以放心使用。大量订购更有优惠。2021.04.01更新

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此链接为PDMS-微流控芯片/PDMS/道康宁SYLGARD184/小桶0.5KG装的链接。

一般性的产品性能参数表参考以下小桶装的参数：

微流控芯片/PDMS/道康宁SYLGARD184；微流控芯片/PDMS/道康宁SYLGARD184；微流控芯片/PDMS/道康宁SYLGARD184；

品牌型号：道康宁SYLGARD184

包装规格：0.5KG/罐[含有45.4g固化剂，总重量为0.5KG]

产品颜色：保质期限：36个月

存放环境说明：室温,阴凉处保存

备注说明：

美国道康宁道康宁SYLGARD 184硅橡胶是由液体组分组成的双组分套件产品，包括基本组分与固化剂。基本组分与固化剂按10:1重量比完全混合，中等粘度混合液的稠度与SAE 40机油相似。无论厚薄，混合液将固化成为具有韧性的透明弹性体，最适用于电子／电气方面的封装与灌封应用。 道康宁SYLGARD 184硅橡胶在25~150℃的温度范围内固化，无放热现象，无需二次固化。固化过程完成后，可立即在-55~200℃的温度范围内使用。 产品特性：低毒性，在常规的工业操作中，无特别的注意事项； 无溶剂或固化副产物， 固化时不放热；无需特殊的通风条件，不会产生腐蚀；固化时，收缩量小； 固化后， 透明具有弹性；抗震与减缓机械震动；振动的传递性能小；元件可裸视检查与易修补性； 环保性能；低吸水性，良好的耐辐射性能；高真空状态下的低漏气性； 优异的电性能；较大温度范围内的稳定性， 抗解聚；在-55~200℃范围内，甚至在密闭状态下保持弹性与柔韧性，性能稳定； 阻燃性，UL可燃性分级为94 V-1，温度等级：130℃ 产品用途： 道康宁SYLGARD 184硅橡胶在电气／电子的封装与灌封方面有广泛的应用。