Preparation method of building bricks

Abstract

The invention discloses a preparation method of building bricks. The preparation method comprises the following specific steps: (1) weighing the following components in parts by weight: 60-70 parts ofconcentrated sulfuric acid of which the mass percentage is 80-88%, 1-2 parts of sodium nitrate powder and 3-4 parts of graphite powder, putting the weighed components into a three-neck flask, placingthe three-neck flask in a water bath of which the temperature is 0-4 DEG C, performing stirring with a stirrer at the stirring speed being 310-350 r / min for 10-13 min, after stirring and mixing, adding 6-8 parts of the potassium permanganate powder, continuing performing stirring for 10-13 min, then raising the temperature of the water bath to 36-40 DEG C, and performing an isothermal reaction for 30-38 min so as to obtain pitchy liquid. According to the preparation method disclosed by the invention, prepared oxidized graphene metal compounds are introduced into filling bricks, chemical bondsand electronic structures between carbon atoms in graphene are closely relevant, and all the carbon atoms in the graphene are wholly tied onto the same plane, so that the building bricks have ultrahigh intensity and tenacity; besides, after the graphene is oxidized, hydroxyl, carboxyl, other epoxy functional groups and added silicon dioxide hybridized-and-modified-polysiloxane compounds can formnew covalent bonds and other chemical bond resultant force.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a method for preparing building bricks. Background technique [0002] Aerated brick is a lightweight and porous new building material, which has the advantages of light capacity, high thermal insulation performance, good sound absorption, strong shock resistance, strong adaptability, good processing performance, low cost, and environmental protection. It has now become a modern There is an important component of new wall materials. At present, aerated bricks have become the leading product in the building materials industry. The country has gradually banned the use of clay solid bricks, and gradually replaced them with aerated concrete blocks. With the development of the construction industry, buildings are getting taller and people's requirements for quality of life, the requirements for strength, corrosion resistance, shrinkage value, frost resistance an...

AI Technical Summary

Problems solved by technology

However, there are still some defects in the aerated bricks prepared by the prior art: (1) there is a rough and porous sand layer on the surface, which is easy to absorb water and cause water seepage in the wall. Moreover, the existing hollow bricks are made of cement and clay, which consumes a lot of resources; (2) the impermeability and corrosion resistance are generally not high, and they are prone to cracking, even breaking and collapsing under long-term water impact or strong corrosive environments. (3) In the process of use, it will inevitably cause damage to the brick body. After the brick body is broken, uneven distribution of pores and uneven pore size are likely to occur, resulting in aerated bricks. Local stress is uneven and easy to split; (4) The aerated bricks prepared by traditional methods have low strength, poor frost resistance, and the bricks are prone to moisture and mold, and the bricks themselves have poor aging resistance, which greatly shortens the use of bricks. life

Images