Preparation of Rubber Asphalt Based on MOFs Materials and its Smoke Suppression Effect Research
Environmental-friendly rubber asphalt was prepared by modifying rubber asphalt with MOFs material.The effects of the ratio of MOFs material and rubber asphalt on the rheological properties,low-temperature properties and VOCs inhibition of environmental-friendly rubber asphalt were ana-lyzed.The spectral characteristics of VOCs were identified by gas chromatography-mass spectrometry(GC-MS).The results show that the complex modulus of UiO-66 with 0.2wt％,0.4wt％and 0.6wt％is 17.2％,30.5％and 36.6％higher than that without UIO-66 at 30℃.Taking the content of 0.6wt％as an example,at-6℃,-12℃,-18℃ and-24℃,the S value of the rubber asphalt was increased by 5.12％,18.73％,7.86％and 6.51％respectively.When the content of UiO-66 was 0.6wt％,the number of VOCs decreased sharply from 118 to 62.The total emission concentration of VOCs from rubber asphalt decreased by 48.1％,from 1043.2 mg/m3to 501.9 mg/m3.In addition,UiO-66 has a significant inhibitory effect on a class of carcinogens,which can reduce the concentration of 1,3-butadiene by as much as 71.2％,which indicates that UiO-66 has a significant inhibitory effect on rubber asphalt VOCs.
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