75 results about "Hexafluorotitanic acid" patented technology

The invention discloses a rare-earth modified Ti-Zr chemical passivation solution for surface treatment of aluminium profiles and a using method of the rare-earth modified Ti-Zr chemical passivation solution. The rare-earth modified Ti-Zr chemical passivation solution is characterized in that the passivation solution is a main salt for auxiliary film-formation, which takes rare-earth compounds as a Ti-Zr passivation treatment solution, and a passivation film is light yellow in appearance and has field judgement property on the quality of a formed film. A formula of the rare-earth modified Ti-Zr chemical passivation solution is as follows: each litre of solution contains 0.5g.L<-1>-10g.L<-1> of potassium fluotitanate (hexafluorotitanic acid), 0.5g.L<-1>-10g.L<-1> of potassium fluozirconate (fluozirconic acid), 0.5g.L<-1>-5g.L<-1> of cerium nitrate (ceric sulfate and ammonium ceric nitrate), 2g.L<-1>-10g.L<-1> of potassium nitrate, 0.5g.L<-1>-3g.L<-1> of sodium fluoride (potassium fluoride), 0.5g.L<-1>-1g.L<-1> of sodium dodecyl benzene sulfonate or OP-10, 0.2mL-5mL.L<-1> of nitric acid and 1g.L<-1>-5g.L<-1> of boric acid. The using method of the rare-earth modified Ti-Zr chemical passivation solution comprises the following steps of: (1) clearing dirt, such as dirt attached to an aluminium alloy; (2) pretreating the surface of the aluminium alloy; (3) carrying out passivating treatment on the surface of the aluminium alloy by using the rare-earth modified Ti-Zr chemical passivation solution; and (4) washing the aluminium alloy by using water and drying the aluminium alloy. The rare-earth modified Ti-Zr chemical passivation solution disclosed by the invention has the advantages of light yellow appearance, high film formation speed, simple process, uniformity in film layer, strong corrosion resistance, low environment pollution and the like.

The invention relates to an addition product that can be produced from hexafluorosilicic acid, hexafluorotitanic acid, and / or hexafluorozirconic acid by an acid-base reaction with one or several organic bases and a method for production and use thereof. The addition products according to the invention guarantee a rapid and lasting inhibition of corrosion processes; they are in particular suitable for inhibiting the corrosion of light metals.

A method for preparing insulated iron powder used by soft magnetic composite materials belongs to the technical field of magnetic function materials and powder metallurgy. The process is that a cladding process includes: adding high-purity iron powder with concentration of 0.1-5g / ml for industrialized production into hexafluorotitanic acid or hexafluorozirconic acid cladding solution with concentration of 0.002-0.05g / ml, stirring for 5-60 minutes for reacting at temperature of 20-70 DEG C, filtering and washing, and drying at 50-120 DEG C to obtain insulated iron powder. The method for preparing insulated iron powder used by soft magnetic composite materials has the advantages of being simple in preparing process, high in efficiency and complete in cladding. An insulated cladding layer onthe surface of the iron powder can effectively reduce magnetic loss of powder cores of the soft magnetic composite materials, and comprehensive performance of the powder cores can be regulated by controlling thickness of the insulated layer.

The invention discloses an antibacterial and mouldproof aluminum alloy chromium-free passivation agent. The antibacterial and mouldproof aluminum alloy chromium-free passivation agent is prepared by the following raw materials in parts by weight: 5-10 of 30-40% hexafluorotitanic acid, 5-10 of 40-45% hexafluorozirconic acid, 0.1-0.2 of borax, 1-2 of sodium fluoride, 1-2 of 65-70% nitric acid, 0.5-1 of coconut diethanolamide, 1-2 of sodium benzoate, 0.3-0.5 of chitosan, 5-10 of ethylenediaminetetraacetic acid disodium salt, 50-100 of film coalescing aid, and 800-1000 of water. The aluminum alloy passivation agent can form a compact film having a netty structure on the surface of an aluminum alloy, is excellent in strength, toughness, adhesive ability and corrosion resistance, has antibacterial and mouldproof effects, can prevent the moulding of the aluminum alloy to guarantee the surface smoothness and the color durability of the aluminum alloy, can reduce the environmental pollution, and is excellent in economic benefit and social benefit.

Chromium-free conversion coating treatment solutions and processes for depositing a colored layer on zinc or galvanized steel, aluminum, magnesium or their alloys, are provided comprising: hexafluorotitanate and / or hexafluorozirconate ions; molybdate and / or tungstate ions; one or more chelating complex formers; and a copolymer of alkylene phosphonic or alkylene phosphinic acid and one or more unsaturated carboxylic acids.

The invention provides an environment-friendly low-cost metal surface treatment agent. The treatment agent is composed of the following raw materials, by weight, 10-20 parts of 3-aminopropyl triethoxysilane, 10-20 parts of dispersed nano-silica, 10-40 parts of hexafluorozirconic acid, 0-25 parts of hexafluorotitanic acid, 5-10 parts of oxalic acid, 8-15 parts of hydrogen peroxide, 887-950 parts of water and 2-5 parts of ammoniacal liquor. In comparison with traditional phosphatization, the invention has advantages of environmental protection property (no toxic heavy metal ion), low energy consumption (use at normal temperature), low use-cost (handling capacity per kilogram is 5-8 times higher than common phosphatization), no slag and the like.

The invention discloses an abrasion-resistant and scraping-resistant aluminum alloy chromium-free passivating agent and a preparation method thereof. The passivating agent is prepared from, by weight, 5-10 parts of 30-40% hexafluorotitanic acid, 5-10 parts of 40-45% hexafluorozirconic acid, 1-2 parts of polyepoxysuccinic acid, 4-6 parts of sodium gluconate, 1-2 parts of sodium fluoride, 1-2 parts of 65-70% nitric acid, 1-2 parts of Turkey red oil, 1-2 parts of simethicone, 50-100 parts of 40-50% polyethylene wax emulsion, 50-100 parts of coalescing agents and 800-1000 parts of water. According to the aluminum alloy passivating agent, a compact film of a net structure can be formed on the surface of aluminum alloy, excellent strength, tenacity and adhesive capacity are achieved, and the corrosion resistance is good; meanwhile, good abrasion resistance is achieved, abrasion and scraping on the surface of the aluminum alloy can be reduced, environment pollution can be reduced, and good economic benefits and social benefits are achieved.

The invention discloses an aluminum alloy natural color chromate-free passivation treatment agent. The aluminum alloy natural color chromate-free passivation treatment agent is prepared from, by weight percentage, 5-10% of potassium persulfate, 1-5% of sorbitol, 0.5-1.5% of ammonium metavanadate, 0.1-0.5% of sodium diisobutyl naphthyl sulfonate, 0.1-0.5% of potassium zirconium carbonate, 0.05-0.08% of polyoxyethylene 10 lauryl ether, 0.01-0.05% of sodium pyrrolidone carboxylate, 0.05-0.1% of cerium salt, 3-10% of inorganic acid, 0.5-2% of organic acid and the balance water. The cerium salt isone or a mixture of cerium oxalate, cerium zincate, cerium formate and cerium acetate. The inorganic acid is one of hexafluorozirconic acid and hexafluorotitanic acid or a mixture of both. The organicacid is one of formic acid, acetic acid and oxalic acid. According to the chromate-free passivation treatment agent, a chromate-free passivation film formed on the surface of aluminum alloy is colorless and transparent, and the natural color of the aluminum alloy is not changed; and after treatment is conducted through the aluminum alloy natural color chromate-free passivation treatment agent, the corrosion resistance of the aluminum alloy is greatly improved, and the treatment agent can be applied to occasions without surface coating.

The invention relates to a method for synthesizing pyrroloquinoline quinone. By the method, ethyl pyruvate is used as a starting synthesizing raw material to prepare the pyrroloquinoline quinone. In the synthesizing method, a step of synthesizing a compound 4 into a compound 5 is a key step of the synthesizing route, in the key step (5), Lewis acid ionic liquid such as hexafluoroantimonate ionic liquid, hexafluorotitanate ionic liquid and hexafluoroborate ionic liquid is creatively used, the ionic liquid has functions of a reaction medium and a catalyst, and therefore, the reaction speed and yield of the steps can be increased. In addition, [BMIm]SbF6 ionic liquid is used optimally, [BMIm]SbF6 ionic liquid and Sc(OTf)3 can form [Sc(OTf)3-x][SbF6] with high catalytic activity, the reactionefficiency can be greatly improved, the solubility of the obtained reaction product in the [BMIm]SbF6 ionic liquid is low, the reaction product precipitates out easily, and therefore, the reaction yield (which can reach 96%) is improved.