35results about How to "Improve acid corrosion resistance" patented technology

The invention relates to a blank material and glaze material of a jade-imitated Longquan celadon and a preparation method of the product. The jade-imitated Longquan celadon comprises a glaze and a blank; the glaze material is composed of a component A and a component B; the component A comprises, by weight, 35-45% of potassium feldspar, 15-21% of quartz, 20-28% of talc, 6-10% of calcium borate, 2-6% of bone ash, and 3-7% of bentonite; the component B is a color glaze material and comprises, by weight, 40-60% of feldspar, 7-13% of quartz , 7-13% of glaze paste, 5-10% of dolomite, 10-20% of limestone, 4-12% of strontium carbonate, and 0.5-1.5% of CuO. The blank of the jade-imitated Longquan celadon is prepared from the following blank material by weight: 30-50% of Longquan porcelain clay, 40-60% of Longyan kaolin, and 5-15% of limestone. The product is a Longquan celadon product which is sintered in a 1200 DEG C oxidation atmosphere, presents calm and steady color and luster and greasy texture and is similar to jades but superior to jades.

The invention relates to a low-temperature low-alkali metal lead-free glaze and a preparation process thereof, mainly comprising the following components and parts by weight: 20-24 parts of potassium feldspar, 7-9 parts of quartz, and 45-54 parts of low-temperature lead-free glass powder , 9‑10 parts of talc, 10‑12 parts of limestone; the low-temperature lead-free glass powder is ZnO–B 2 o 3 – SiO 2 Glass, including ZnO 30-55%, B 2 o 3 18-22%, SiO 2 17~30%, Al 2 o 3 5~10%, BaO 4~6%, TiO 2 0~3%. The present invention adds ZnO-B in the glaze 2 o 3 – SiO 2 Glass is used to replace lead-containing flux and alkali metal oxides. When the content of alkali metals is less than 3%, the acid corrosion resistance of the glaze is greatly improved, and the strength and wear resistance of the glaze are better. It can ensure that the sintering temperature is below 800°C, and it can also reduce the thermal expansion coefficient of the glaze, and at the same time, it will not precipitate heavy metals such as lead and cadmium, which meets the requirements of health and environmental protection. In addition, the invention also effectively reduces the viscosity of the glaze by adding talc and limestone, and improves the fluidity and gloss of the glaze.

The invention discloses an anti-blue light sulfonated organic film and a preparation method thereof. The anti-blue light sulfonated organic film takes a blue light flexible material as a matrix, wherein the blue light flexible material is specifically a polyester optical thin film which is 0.03 to 0.05 mm in thickness and is subjected to hydrogen hardening after stable modification; a rosinyl polyester acrylate film layer which is 0.01 to 0.02 mm in thickness and is subjected to ultraviolet curing and stable modification is also formed on the surface of the matrix. The anti-blue light sulfonated organic film disclosed by the invention adopts the polyester optical thin film as a base material, has the advantages of disposable machine shaping, stable chemical property, strong ageing resistance, surface scratch resistance and long service life, and is capable of reducing the damage of high-energy blue light to human eyes.

The invention discloses a preparation method of low-fluorine silicone rubber used for a ceramic composite insulator. The preparation method comprises weighing 100 parts of methyl vinyl fluorosilicone rubber, 6-9 parts of precipitated silica, 18-25 parts of a fire retardant, 3-7 parts of zinc stearate, 2-6 parts of activated magnesium oxide and 2-5 parts of ferric oxide powder according to a ratio, and uniformly mixing in a double-roller mixing mill so as to prepare a uniform master batch, performing banburying on the master batch in a kneader at 170 DEG C at a vacuum degree of -0.09 MPa for 10-20 min, then adding 0.1-0.3 part of dicumyl peroxide, again performing banburying at 200 DEG C for 3-5 h, and leaving overnight, so as to prepare the low-fluorine silicone rubber. The prepared low-fluorine silicone rubber possesses excellent performances of fluorosilicone rubber, overcomes problems of silicon rubber, is resistant to ageing, possesses excellent acid and alkali resistance, is strong in hydrophobicity, is affordable, and helps to effectively save cost.

The invention discloses a protective material, which is prepared by mixing 100 parts of Portland cement, 100-250 parts of natural fine sand, 0.15-0.20 parts of durafiber, 5 parts of moisture migration inhibitor, and 3-8 parts of metakaolin The present invention also discloses the application of the protective material as a protective layer on the surface of a building and repairing a corroded part of a building. The protection material of the present invention has few types of raw materials, scientific and reasonable raw material ratio and particle size distribution, outstanding waterproof effect, and can effectively prevent corrosion of concrete buildings caused by water quality. At the same time, when used as a repair material, the construction is convenient. The difficulty of construction is greatly reduced.

The invention discloses a gas shielded welding stainless steel welding wire with high hardness and strong acid corrosion resistance and its preparation method and application. The welding wire includes the following elements in mass percentage: C≤0.03%, Mn 0.6-1.5%, Si 0.5~1.2%, Cr 14.0~19.0%, Ni 4.0~8.0%, Mo 2.0~3.0%, Cu 2.0~5.0%, B 0.5~2.5%, Nb 0.2~0.7%, V 0.2~0.5%, S≤0.03 %, P≤0.03%, and the balance is Fe. The billet of this kind of welding wire is precisely smelted under vacuum and inert gas atmosphere. The welding wire of the present invention aims to solve the technical problem of requiring the deposited metal to have high hardness and strong acid corrosion resistance at the same time.

The invention discloses high-temperature vulcanized modified silicon rubber which is mainly prepared from the following base materials: 110-1 methyl vinyl silicone rubber, 110-2 methyl vinyl silicone rubber and 110-3 methyl vinyl silicone rubber at the weight ratio of (1-2):(2-5):(1-3). The high-temperature vulcanized modified silicon rubber has the advantages of all excellent property of high-temperature vulcanized silicon rubber and better ultraviolet resistant property and acid etching resistant property. According to the IEC62217 standard, after the high-temperature vulcanized modified silicon rubber is aged through ultraviolet light (xenon-arc method) for 1500 hours, the material is intact; after the high-temperature vulcanized modified silicon rubber is soaked in a 65% nitric acid solution for 45 minutes, the material is intact.

The invention discloses an ultrafine cristobalite in-situ wrapped type γ-Ce 2 S 3 The preparation method of the bright red material is firstly to introduce the cerium source and the silicon source into the microemulsion system, and after the precipitation reaction, centrifuge, wash and dry to obtain the wrapped color material precursor powder, and then carry out vulcanization treatment and high-temperature calcination to produce Obtained ultra-fine cristobalite in-situ wrapped type γ~Ce 2 S 3 Big red material. In addition, the product prepared by the above-mentioned preparation method is also disclosed. The invention synchronously synthesizes the inner color agent γ-Ce through a simple and controllable preparation process 2 S 3 Pigment particles and cristobalite coating layer crystals are wrapped in situ to form the core colorant γ~Ce 2 S 3 The pigment particles are evenly stacked and embedded in the cristobalite coating layer, which is like a pomegranate seed coating structure, which greatly improves the high temperature stability and acid corrosion resistance of the pigment, thereby greatly expanding its application field.