Asphalt modifier and preparation process thereof
An asphalt modifier and preparation technology, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of poor dispersion of modifiers, no dust and easy cleaning, and insignificant improvement of asphalt anti-aging performance, to achieve improved Stability, improve compatibility, improve anti-oxidative aging effect
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Embodiment 1
[0027] The invention provides an asphalt modifier, comprising the following raw materials in parts by weight: 20 parts of graphene, 10 parts of carbon nanotubes, 4 parts of dopamine, 15 parts of vegetable oil polyols, 30 parts of polytetrafluoroethylene fiber and 1 part stabilizer.
[0028] Wherein, the stabilizer is sulfur.
[0029] The graphene has been pretreated, specifically:
[0030] S1, disperse the graphene in the ethanol solution, control the mass concentration of the graphene to 0.3 mg / mL, and obtain a colloidal solution after ultrasonic treatment for 2 hours;
[0031] S2, add surfactant in colloidal solution, stir colloidal solution under the stirring velocity of 1000r / min and carry out foaming 40min, obtain foam suspension, wherein the weight ratio of the add-on of surfactant and graphene in colloidal solution is 0.03 :1;
[0032] S3. Freeze-drying and pulverizing the foam suspension to obtain pretreated graphene.
[0033] The surfactant in step S2 is sodium do...
Embodiment 2
[0040] The invention provides an asphalt modifier, comprising the following raw materials in parts by weight: 30 parts of graphene, 15 parts of carbon nanotubes, 8 parts of dopamine, 25 parts of vegetable oil polyols, 40 parts of polytetrafluoroethylene fiber and 3 parts stabilizer.
[0041] Wherein, the stabilizer is sulfur.
[0042] The graphene has been pretreated, specifically:
[0043] S1, disperse graphene in ethanol solution, control the mass concentration of graphene to be 0.7mg / mL, after ultrasonic treatment for 2.5h, obtain colloidal solution;
[0044]S2, add surfactant in colloidal solution, stir colloidal solution under the stirring speed of 1500r / min and carry out foaming 60min, obtain foam suspension, wherein the weight ratio of the add-on of surfactant and graphene in colloidal solution is 0.1 :1;
[0045] S3. Freeze-drying and pulverizing the foam suspension to obtain pretreated graphene.
[0046] The surfactant in step S2 is sodium dodecylsulfonate.
[00...
Embodiment 3
[0053] The invention provides an asphalt modifier, comprising the following raw materials in parts by weight: 25 parts of graphene, 13 parts of carbon nanotubes, 6 parts of dopamine, 20 parts of vegetable oil polyols, and 35 parts of polytetrafluoroethylene fiber and 2 parts stabilizer.
[0054] Wherein, the stabilizer is sulfur.
[0055] The graphene has been pretreated, specifically:
[0056] S1, disperse the graphene in the ethanol solution, control the mass concentration of the graphene to 0.5 mg / mL, and obtain a colloidal solution after ultrasonic treatment for 2.3 hours;
[0057] S2, add surfactant in colloidal solution, stir colloidal solution under the stirring speed of 1300r / min and carry out foaming 50min, obtain foam suspension, wherein the weight ratio of the add-on of surfactant and graphene in colloidal solution is 0.07 :1;
[0058] S3. Freeze-drying and pulverizing the foam suspension to obtain pretreated graphene.
[0059] The surfactant in step S2 is sodiu...
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