China Plastics ›› 2022, Vol. 36 ›› Issue (1): 142-147.DOI: 10.19491/j.issn.1001-9278.2022.01.021

• Standard and Test • Previous Articles     Next Articles

Study on measurement method of gas evolution of foaming agent ADC based on thermogravimetric analysis

WANG Xiaodong1,2,3, HUA Lei1,2(), DONG Aijuan1,2, LUO Lihua4   

  1. 1.Zhejiang College,Tongji University,Jiaxing 314000,China
    2.Jiaxing Key Laboratory of High?performance and Functional Materials in Civil and Environmental Engineering,Jiaxing 314000,China
    3.Jiaxing Bylun Advanced Material Technology Co,Ltd,Jiaxing 314000,China
    4.Zhejiang Joysun Advanced Material Co,Ltd,Jiaxing 314200,China
  • Received:2021-06-30 Online:2022-01-26 Published:2022-01-21

Abstract:

According to the decomposition equation of the first stage of azodicarbon amide(ADC) thermal decomposition in the temperature range of 200 ~ 240 ℃, the functional relationship between ADC decomposition process and gas generation process was established, and the thermal weight loss curve of ADC was transformed into TG gas?generation curve. The results indicated that by comparing the TG gas?generation curve of foaming agent ADC and the gas?generation curve measured by the drainage gas?gathering method, the data of starting temperature, maximum gas?generation?rate temperature, and ending gas?generation temperature of ADC measured by the two methods were very close with each other. The comparison adjusted R?squares between the two curves and the fitting curve were 0.993 7 and 0.915 43, respectively, In the first stage of ADC thermal decomposition, the TG gas?generation curve of ADC can be calculated using a TG gas?generation curve formula, which can replace the gas?generation curve measured by traditional drainage gas?gathering methods.

Key words: foaming agent, azodicarbon amide, gas volume, thermogravimetric analysis, gas evolution curve

CLC Number: