Preparation method of acid-corrosion-resistant enamel glass glaze
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A technology of acid corrosion resistance and glass glaze, which is applied in the field of materials, can solve the problem that the enamel coating cannot meet the long-term work, and achieve the effect of improving compactness and acid corrosion resistance, improving the cladding structure, and improving the compactness strength
Inactive Publication Date: 2019-06-07
雷春艳
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[0006] The technical problem to be solved by the present invention: Aiming at the problem that the conventional enamel coating cannot meet the long-term work under the condition of strong acid gas, a preparation method of acid corrosion-resistant enamel glass glaze is provided
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[0026] Take attapulgite and grind it, pass through a 200-mesh sieve and weigh 45-50 parts of deionized water, 3-5 parts of manganese nitrate and 10-15 parts of attapulgite particles in a beaker , stirred and mixed and kept at 65-75°C for 2-3 hours. The reaction solution was obtained and dried at 100-110°C until constant weight was obtained. The dried particles were collected and heated to 280-300°C at a rate of 5°C / min. After calcination for 3 to 5 hours, the calcined particles were collected and ground through a 1000-mesh sieve to obtain calcined modified particles; the magnesium bars were taken and ground and pulverized, and passed through a 200-mesh sieve to obtain magnesium bar particles. Stir and mix the particles with methanol and place them in a three-necked flask, pass nitrogen to remove the air and control the rate of nitrogen introduction to 45-50mL / min, place it at 75-85°C for 1-2 hours, collect the reaction liquid and mix it according to the mass ratio of 1 : 10, t...
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Abstract
The invention relates to a preparation method of an acid-corrosion-resistant enamel glass glaze, belonging to the technical field of materials. A technical scheme of that invention adopts the size effect, antimony oxide is compounded with alumina and nano alumina power is added into that an enamel ground glaze, the crystals in the transition zone between metal and enamel glaze are refined, and theconcentration gradient of elements in the transition zone changes gently, so that the adhesion of the two kinds of ground glaze can be improved effectively, the density strength of the material can be improved, thus the acid corrosion resistance of the material can be improved effectively. In a technical solution of the present invention, fluoride-containing gel is prepared by sol-gel method andadded to that glaze surface material as binder and compactor, fluoride can promote crystal growth and slow down the dissolution of minerals in the enamel, as a temporary barrier to acid attack, the acid is neutralized during acid attack, so that the enamel surface reaches neutral pH value. Meanwhile, the free material produced by fluoride dissolution forms coating film effectively, which improvesthe coating structure of the material and improves the compactness and acid corrosion resistance of the material.
Description
technical field [0001] The invention relates to a preparation method of acid corrosion-resistant enamel glass glaze, which belongs to the field of material technology. Background technique [0002] Enamel is a composite material composed of a metal matrix and an inorganic porcelain layer. At present, the commonly used substrate materials are low carbon steel, cast iron, aluminum, titanium alloy and so on. According to different uses, the specific composition and dosage of enamel glaze are not the same, but in general, the raw materials of enamel can be divided into matrix agent, cosolvent, adhesive agent, colorant, etc. The commonly used matrix agent is SiO 2 , Al2O 3 , B2O 3 etc. Commonly used co-solvents are Na 2 O, K 2 O, etc., commonly used adhesives are Co 2 o 3 , NiO, etc., commonly used colorants are MnO 2 , Fe 2 o 3 Wait. Determined by raw materials, enamel materials have good physical and chemical properties, such as corrosion resistance and high temperat...
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