Method for evaluating flame retardant for inhibiting asphalt thermal cracking to generate volatile organic compounds
A technology for volatile organic compounds and pyrolysis products, which is used in the field of evaluating flame retardants to inhibit the thermal cracking of asphalt to generate volatile organic compounds, which can solve the problems of difficulty in collecting asphalt smoke, inability to specifically evaluate the inhibitory effect of flame retardants, and achieve accurate analysis results. Effect
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[0013] The present invention is a method for evaluating flame retardants to inhibit thermal cracking of asphalt to produce volatile organic compounds, and the specific implementation steps are as follows:
[0014] (1) Prepare asphalt and flame-retardant modified asphalt samples respectively, weigh 4 mg of asphalt and flame-retardant modified asphalt samples, install them in a tube furnace cracker for cracking, set the temperature of the cracker inlet to 220 ° C, and adjust the cracker The pressure is 12psi, and the cracking time is 28s;
[0015] (2) Set the temperature program of the cracker, the initial temperature is 40°C, the holding time is 5min, the temperature is raised to 270°C at 5°C / min, the holding time is 5min, and then the temperature is raised to the final temperature of pyrolysis at 550°C at 5°C / min;
[0016] (3) Lead the cracked asphalt and flame-retardant modified asphalt pyrolysis product into the high-efficiency capillary column connected to it for separation...
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