水气吸附法评定树脂残碳密实度

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水气吸附法评定树脂残碳密实度
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作者单位:中国兵器工业集团第五三研究所
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Compactness of Residual Char of Resins by Moisture Adsorption Method

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摘要:

通过水气吸附法研究了树脂残碳的密实度,以S-157 酚醛树脂、Q-913 酚醛树脂、硼酚醛环氧树脂体系

等6 种树脂为例进行说明,把6 种固化树脂粉体在氮气气氛中热解成碳,把残碳移入控制温湿度的实验环境内放置,

采用高精度的天平称量残碳不同时刻的质量变化,经过约200 min 的残碳吸附过程分析,获得残碳吸附空气中的水气

达到平衡后,树脂残碳在控制温湿度的环境条件下质量变化率与时间的关系,通过比较残碳的增重对其密实度进行

评定。采用扫描电子显微镜对残碳表面进行观察验证。结果表明:水气吸附能力可反映树脂残碳的密实度,在规定

温湿度环境内吸附平衡时,水气吸附量为残碳密实度的评定依据。

Abstract:

The compactness of resin was studied by the moisture adsorption method in the paper. The research process

was explained by six kinds of resins, including S-157 phenol resin, Q-913 phenol resion and boron modified phenol resin

etc. Six kinds of resins were decomposed to get different residual chars under the protection of nitrogen atmosphere. The re鄄

sidual chars were transferred and placed under a laboratory with the controlled humidity and temperature. The weight chan鄄

ges of several residual chars were weighed up by a balance with the precision of 0.001 milligram. The compactness of resid鄄

ual chars were compared by their increment after adsorption balance of moisture. The relation of the mass change with in鄄

crement of six residual chars was gotten after a interval of 200 minute moisture adsorption. The microscope structure of resid鄄

ual char was observed by electron scanning microscope, and the compactness in microstructure is in accordance with the a鄄

bility of moisture adsorption.

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刘运传.水气吸附法评定树脂残碳密实度[J].宇航材料工艺,2013,43(5).

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在线发布日期: 2016-11-28
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