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        applications more

        • Bitumen modification use APAO
        • Hot melt adhesive and pressure sensitive adhesive use APAO
        • Sealing material use APAO
        • Polymer modification use APAO

        application

        Serving for the following industries, QIDA®APAO exhibits the advantages of APAO are shown as follows:

        As a bitumen modifier (waterproofing membranes, road pavement...), APAO shows:

        1. Excellent high temperature property;
        2. Good low temperature flexibility;
        3. Good water resistance;
        4. Good anti-oxidation and UV stability;
        5. Superior compatibility with nearly all kinds of asphalts;
        6. Good compatibility with SBS, EVA, EPDM, PE, IPP...

        The above all features allow APAO to be used in modified bitumen waterproofing membranes (APP, SBS, EPDM, EVA types of waterproofing membranes). Meanwhile, APAO also could be used for road pavement and maintenance. The prominent high temperature property endowsAPAO a wide application in regions of hot weather.

         

        About how APAO is used for bitumen modification
        Preparation of APAO modified asphalt

        Mix as usual at around 170±5°C(no need to use special equipments);
        Stop mixing when the modifer has been well dispersed (Around 1 -2hr).

        Bitumen modifier APAO By-product APP SBS
        Price Medium Low High
        Solubility in bitumen Good and quick solubility Normally with high moisture contents and solvent, dissolving time varies. Molecular weight is relatively high, dissolving time is long is not in powder; Powders tend to blocking.
        Mixing rate 15-25% 20-30%,homo and block APP copolymer are required together. 10-15%
        Mixing equipment Normal mixer for bitumen Normal mixer for bitumen Mixer with shearing force
        Stability No double bond, stable Similar to APAO, but APP usually contains catalyst residual, unexpectable aging happens With double bond,so aging and cross link tends to occur, which causes molecular weight and viscosity raise, hard to process.
        High temperature property Excellent, no flow or distortion when less than 60 °C Similar to APAO, but APP usually has no stable property Bad, distortion and precipitation occur when 50-60°C
        Low temperature property -15°C Similar to APAO, but APP usually has no stable property -20~-30°C
        Anti aging property Good durability to UV and heat aging(~250°C) Similar to APAO, but APP usually has no stable property and contains impurity, so durability is not good. Bad durability to UV and heat aging(~250°C), tend to become tough.

         

         

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