脱模剂是压铸生产工艺中必不可少的辅助用剂，选用不当会造成压铸件出现表面质量问题和缺陷。 因此， 在上机使用前，合适的性能测试非常必要。选取生产中常用的两种商用水基脱模剂(A型、B型)，研究了脱模剂典型性能 指标的测试方法。 通过黏度、粒径、热重、气相色谱质谱联用、接触角和表面张力及室温稳定性测试，对两种脱模剂的脱 模性、热稳定性、涂附性、室温稳定性进行综合评估分析，结果表明，A型脱模剂较B型脱模剂的热稳定性好、脱模效果 好、气体挥发量少、不易产生气泡等。

Release agents are indispensable auxiliary agents in the high-pressure die casting production process. Improper selection of the release agent will cause surface quality problems and defects in the casting. Therefore, it is necessary to conduct appropriate performance testing of the release agent prior to its machine application. Two commercial water-based release agents (type A and type B) commonly used in aluminium alloy die-casting production enterprises were selected to study the testing methods for typical performance indicators of release agents. Through viscosity tests, particle size tests, thermogravimetric tests, gas chromatography-mass spectrometry tests, contact angle and surface tension tests, and room temperature stability tests, the demolding performance, thermal stability, adhesion performance and room temperature stability of the two release agents were comprehensively evaluated and analysed. The results show that the type A release agent has better thermal stability and demolding performance than the type B release agent does. Moreover, the gas volatilization of the type A release agent is lower, effectively avoiding the generation of bubble defects in die castings.