Stable finished warm-mix rubber-modified asphalt and preparation method thereof
A rubber modified and stabilized technology, which is applied in building insulation materials, building components, buildings, etc., can solve the problems of poor aging resistance, unstable performance of rubber powder modified asphalt, and high price, and achieve the effect of wide application prospects
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Embodiment 1
[0030] The stable finished warm-mix rubber-modified asphalt of the present invention is composed of various components in mass fraction, 76% of 50# matrix asphalt, 1% of powdered styrene-butadiene rubber, 16% of 30-mesh desulfurized rubber powder, and 1% of stable Agent, 3% liquid polybutadiene rubber toughening agent and 3% solid oil-compatible warm mixing agent. Wherein the stabilizer is composed of the following components in mass fraction, 2% sulfur, 2% divinylbenzene and 96% furfural oil.
[0031] The preparation process steps are as follows:
[0032] (1) Soak 30-mesh desulfurized waste rubber powder in 50# matrix asphalt at 140°C for 25 minutes to make it initially disperse and swell, and heat it in an oil bath;
[0033] (2) First use three-dimensional frequency conversion pre-shearing for homogenization treatment, and then use a high-speed shearing emulsifier to shear and refine the 50# matrix asphalt mixed with waste rubber powder. The shearing speed is 3500rpm and th...
Embodiment 2
[0036] The stable finished warm-mix rubber-modified asphalt of the present invention is composed of various components in mass fraction, 78% of 50# base asphalt, 1% of powdered styrene-butadiene rubber, 16% of 30 mesh desulfurized rubber powder, and 1% of stable Agent, 2% liquid polybutadiene rubber toughening agent and 2% solid oil-compatible warm mixing agent. Wherein the stabilizer is composed of the following components in mass fraction, 1.5% sulfur, 1.5% divinylbenzene and 97% furfural oil.
[0037] The preparation process steps are as follows:
[0038] (1) Soak 30-mesh desulfurized waste rubber powder in 50# matrix asphalt at 140°C for 25 minutes to make it initially disperse and swell, and heat it in an oil bath;
[0039] (2) First use three-dimensional frequency conversion pre-shearing for homogenization treatment, and then use a high-speed shearing emulsifier to shear and refine the 50# matrix asphalt mixed with waste rubber powder. The shearing speed is 4000rpm and th...
Embodiment 3
[0042] The stable finished warm-mix rubber-modified asphalt of the present invention is composed of various components in mass fraction, 76% of 50# matrix asphalt, 0.5% of powdered styrene-butadiene rubber, 16% of 30-mesh desulfurized rubber powder, and 1.5% of stable Agent, 3% liquid polybutadiene rubber toughening agent and 3% solid oil-compatible warm mixing agent. Wherein the stabilizer is composed of the following components in mass fraction, 1% sulfur, 2% divinylbenzene and 97% furfural oil.
[0043] The preparation process steps are as follows:
[0044] (1) Soak 40-mesh desulfurized waste rubber powder in 50# matrix asphalt at 150°C for 30 minutes to make it initially disperse and swell, and heat it in an oil bath;
[0045] (2) First use three-dimensional frequency conversion pre-shearing for homogenization treatment, and then use a high-speed shearing emulsifier to shear and refine the 50# matrix asphalt mixed with waste rubber powder. The shearing speed is 3500rpm an...
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