Dynamically Determined High‐Pressure Compressibilities of Three Epoxy Resin Systems
Dynamically Determined High‐Pressure Compressibilities of Three Epoxy Resin Systems
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DOI：
10.1063/1.1661315
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发表时间：
1972-03
影响因子：
3.2
通讯作者：
D. Munson;R. May
中科院分区：
文献类型：
--
作者：
D. Munson;R. May
在平板冲击实验中对玻璃化转变温度有显著变化的三种Epon 828环氧树脂体系进行动态测试，以获得其压力-体积响应。硬化剂的选择通过交联度和结构变化决定了体系的转变温度。对于本研究，使用的硬化剂是间苯二胺、Z和D。三个系统的动态"平衡“压缩曲线在实验不确定性范围内是相同的，并且由Z系统冲击-速度-粒子-速度结果U=2.64+1.66u（mm/μsec）; ρ0=1.194 g/cm 3充分表示。通过使用Gruneisen方程和适当的热力学量，可以将动态结果简化为等温条件。这些动态等温线进行比较，静态压缩通过其他调查使用活塞装置。虽然静态结果显示压缩性随加工条件的显著变化，但这并未得到证实。
Three Epon 828 epoxy systems which had significant variation in glass transition temperatures were tested dynamically in plate impact experiments to obtain their pressure‐volume response. The choice of hardener determines the transition temperature of the system through the degree of crosslinking and structural changes. For this study, the hardeners used were metaphenylenediamine, Z and D. The dynamic ``equilibrium'' compression curves for the three systems are identical within experimental uncertainty and are adequately represented by the Z system shock‐velocity‐particle‐velocity results of U=2.64+1.66u(mm/μsec); ρ0=1.194 g/cm3. The dynamic results may be reduced to isothermal conditions through the use of the Gruneisen equation and appropriate thermodynamic quantities. These dynamic isotherms are compared to static compressibilities obtained by other investigations using piston apparatus. While the static results show marked variation of compressibility with processing conditions, this was not confirmed...