ABS塑料低压低温气候环境适应性快速评价方法

目的 研究采用新型低气压环境综合加速试验技术开展ABS塑料低气压低温环境适应性试验的模拟性和加速性.方法 对比开展新型低气压环境综合加速试验与低气压低温自然环境试验,分析ABS塑料在两种环境试验中的老化机理、拉伸强度和简支梁缺口冲击强度变化规律的相似性,进一步采用加速转换因子(ASF)法处理试验数据,分析新型低气压环境...

Rapid Evaluation Method for Climate Environment Adaptability of ABS Plastic at Low Pressure and Low Temperatures

This paper aims to study the simulation and acceleration of the environmental adaptability test of ABS plastics in low air pressure and low-temperature environment by using a new comprehensive accelerated test technology.By comparing the new low air pressure environment comprehensive accelerated test with the low air pressure and low-temperature natural environment test, the aging mechanism, tensile strength and similarity of variation law of notched impact strength of simply supported beams were analyzed. The acceleration switchover factor (ASF) method was used to process the test data, and the acceleration of the new low air pressure environment comprehensive accelerated test technology was analyzed.After the comprehensive accelerated test in the new low air pressure environment, the variation rules of the infrared spectrum, tensile strength and notched impact strength of ABS plastics are the same. Compared with the natural environmental test in the low air pressure and low-temperature environment, the accelerated ratio is in the range of 10 ~ 12.3 times based on the statistics of the change rate of tensile strength of ABS plastics; Based on the change rate of notched impact strength of the simply supported beam, the accelerated ratio is 11. 6 ~ 15.5 times, and the accelerated ratio under the two statistical methods changes with time.Using the new low air pressure environment comprehensive accelerated test technology to evaluate the low pressure and low-temperature environment adaptability test of ABS plastics has good simulation and acceleration.