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

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 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.