Preparation and characterization of pavement materials with phase-change temperature modulation |
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Authors: | Bai Gang Fan Qinzhen Song Xi-Ming |
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Affiliation: | 1.College of Chemistry, Liaoning University, Shenyang, 110036, People’s Republic of China ;2.PetroChina Fushun Petrochemical Company, Fushun, 113008, People’s Republic of China ; |
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Abstract: | A kind of pavement crack repairing material with temperature regulation property was successfully prepared through one-step method, in which the paraffin was incorporated into the polyurethane/epoxy resin-interpenetrating polymer networks. Differential scanning calorimeter results indicated that the phase-change latent heat of sample A was 14.4 kJ kg?1, and the phase transition temperature was ??0.3 °C. FTIR and thermogravimetry measurements verified that the paraffin was successfully incorporated into the interpenetrating polymer network without leakage and reacted with the carrier, which exhibited high thermal stability above 300 °C. After 1 year of road test, there was no breakage for the repairing pavement with paraffin–polyurethane/epoxy resin-interpenetrating polymer networks, and there was almost no change for the accumulated attenuation of phase-change latent heat. Therefore, the materials of paraffin–polyurethane/epoxy resin-interpenetrating polymer networks have good chemical stability and thermal stability. |
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