Graphene oxide reinforced carbonized hardened composite material and preparation method thereof
A composite material and graphene technology, which is applied in the field of carbonization hardening composite material preparation, can solve problems such as insufficient mechanical properties, and achieve the effect of reducing porosity, obvious effect, and reducing production cost.
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[0016] The first aspect of the present invention provides a kind of preparation method of graphene oxide reinforced carbonization hardening composite material, comprises the steps:
[0017] S1 Mix the carbonized cementitious material with graphene oxide and water evenly to obtain the target mixture. Wherein, the mass ratio of the carbonized gelling material to the graphene oxide is 100:(0.010-0.090). If the amount of graphene oxide is too much, since the effect of graphene oxide on performance improvement tends to be stable, excessive graphene oxide will not make the strength continue to increase significantly, and will increase the cost; if graphene oxide is added If the amount is too small, the performance will not be significantly improved. The mass ratio of the total mass of carbonized gelling material and graphene oxide to water is 1: (0.06-0.30), and too much or too little water is not conducive to improving the mechanical properties.
[0018] S2 Pour the target mixtur...
Embodiment 1～4
[0040] Examples 1-4 use 10 mg / mL graphene oxide solution to make graphene oxide reinforced carbonized hardening composite materials with a mass ratio of carbonized gelling material and graphene oxide of 100:0.030. The specific preparation process is as follows:
[0041] Take 10 mL of graphene oxide solution with a mass concentration of 10 mg / mL, add water to dilute to 50 mL, and prepare a 2 mg / mL graphene oxide solution;
[0042] Take 10g of carbonized cementitious material powder and 1.5g of diluted graphene oxide solution (2mg / mL) and mix evenly to obtain a mixture; put the mixture into a mold and hold the pressure at 30MPa for 2min to press molding, and put it into the air pressure after demolding 0.3MPa, volume concentration of 99% of the carbon dioxide atmosphere for 24h (carbonization temperature of 25 ℃, relative humidity of 60%), you can get graphene oxide reinforced carbon hardening composite material specimens.
Embodiment 5～8
[0044] Examples 5-8 use powdered graphene oxide to make a carbonized hardened composite material with a mass ratio of carbonized cementitious material to graphene oxide of 100:0.015. The specific preparation process is as follows:
[0045] According to the mass ratio of carbonized gelling material and graphene oxide as 100:0.015, weigh a certain mass of carbonized gelling material and graphene oxide powder and mix them in a mixer for 2 hours to obtain a uniform mixture;
[0046] Take 10g of the mixture and 1.5g of water, mix it evenly, put it into the mold, keep the pressure at 30MPa for 2min, and press it for molding. ℃, the relative humidity is 60%), and the graphene oxide reinforced carbonized hardened composite material specimen can be obtained.
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