Preparation method of electrostatic-assist nano-titanium polymer coated by graphene intercalation

Abstract

The invention discloses a preparation method of an electrostatic-assist nano-titanium polymer coated by graphene intercalation, and belongs to the field of polymer preparation. The method includes the steps of 1, blending graphite powder with titanium powder according to a certain mass proportion in an electrostatic mode; 2, putting the powder material blended well in the step 1 with epoxy resin E44, low-molecular polysiloxane, DPM-30, epoxy-group siloxane and solvent into a stainless steel reaction still for reaction, then finishing the preparation of the electrostatic-assist nano-titanium polymer coated by graphene intercalation. The obtained electrostatic-assist nano-titanium polymer coated by graphene intercalation has the advantages of being able to substantially improve the formation of steady covalent bonding and molecular bonding on the surfaces of steel and concrete base materials, thereby substantially enhancing the adhesive force of coatings and the adhesive force of wet films, uprating the comprehensive property of coatings, and meanwhile, reducing the content of dissociative nano-particles and preventing the occurrence of galvanic corrosion to aggravate corrosion when the coatings are abnormally damaged.

Description

technical field [0001] The invention belongs to the field of polymer preparation, and more specifically relates to a method for preparing an electrostatically assisted graphene intercalation-coated titanium nanometer polymer. Background technique [0002] At present, the two popular products of high-performance acid, alkali and salt heavy-duty anti-corrosion coatings are mainly epoxy coatings added with graphene or titanium alloys and titanium nanopolymers. Improve the electrical properties or use the superconductivity of graphene to reduce the electrical conductivity of the coating, thereby reducing the amount of zinc powder added to the coating. [0003] It is difficult to prepare graphene. The existing methods mainly include: epitaxial growth, vapor deposition, mechanical exfoliation, redox and other methods. The preparation process is complicated, the output is small, and the cost is high, which is not conducive to large-scale application. It is still a single-layer str...

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Problems solved by technology

[0004] Titanium nanopolymers are made by using high-energy mechanical ball milling, using specific formulas and processes to refine metal titanium or titanium alloy powders, and at the same time form chemical crosslinks with polymer hydroxyl groups, epoxy groups, amino groups, etc. to form a network In this way, the nano-network structure can be used to improve the compactness of the coating, and the organic-inorganic hybrid polymerization and structure can be used to improve the mechanical strength of the coating, thereby greatly improving the acid, alkali and salt resistance of the coating. However, the current titanium The preparation of nano-polymers requires closed reaction under the protection of vacuum or inert gas. The reaction time is generally 6 hours, and the output of a single machine is not high. In addition, during the crushing process of titanium nano-polymers, the surface area of ​​nano-scale titanium can reach 20m 2 Above, the existing technology uses epoxy resin or acrylic resin to bond the surface of titanium nanometers, because these resins have large molecular weight, long molecular chain, large steric hindrance, and limited number of functional groups, so they cannot be completely compatible with nanoscale The titanium surface is cross-linked and grafted, and more titanium nanometers are only dissociated in the polymer material and act as fine fillers, which greatly reduces the effect, and the dissociated titanium is conductive, and the electrode potential is higher than that of iron. When the coating When abnormal damage occurs, galvanic corrosion of large cathode and small anode is very likely to occur, which intensifies the corrosion

[0005] The existing graphene-modified titanium nanopolymer is divided into two steps. First, a graphene dispersion is prepared, and then a titanium nanoslurry is prepared. The two are combined to obtain a graphene-modified titanium nanopolymer. This physical It is difficult to really intersperse the graphene flake layer structure in the titanium nanopolymer gap, which plays a limited role.

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