Pipeline or pipe fitting provided with silicon carbide ceramic abrasion-resisting and corrosion-resisting liner and preparation method thereof
A silicon carbide ceramic, ceramic layer technology, applied in ceramic products, pipes/pipe joints/pipes, pipe protection, etc., can solve the problems of short service life and low reliability, reduce production costs, extend service life, extend The effect of using the cycle
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Embodiment 1
[0055] In this embodiment, the method for preparing a wear-resistant and corrosion-resistant pipe or pipe fitting with dual ceramic linings includes the following steps:
[0056] (1) According to the mass ratio, phenolic resin: silicon carbide particles (average diameter 10μm): hexamethylenetetramine=100:140:5, mix the above raw materials, and ball mill for 1 hour to obtain powder. The materials are evenly mixed without obvious agglomeration;
[0057] (2) Prepare liquid thin slurry with the mass ratio of the powder obtained in (1): powder: alcohol=100:200, and then fully soak the foam with a thickness of 5mm in the slurry and squeeze the excess slurry. Air dry at 120°C. After air drying, the sample is immersed in the slurry again, and the excess slurry between the holes is blown off, and then air dried at a high temperature of 120°C. Repeat the above steps 5 times to obtain the required foam ceramic layer precursor;
[0058] (3) The material powder obtained in (1) is prepared in a...
Embodiment 2
[0064] In this embodiment, the method for preparing a wear-resistant and corrosion-resistant pipe or pipe fitting with dual ceramic linings includes the following steps:
[0065] (1) According to the mass ratio, epoxy resin: silicon carbide particles: citric acid = 100:50:5 ratio of mixing the above raw materials, ball milling for 2 hours to obtain a slurry; the particle size of the silicon carbide particles is 2 microns;
[0066] (2) Prepare a liquid thin slurry with the material powder obtained in (1) at a mass ratio (material powder: alcohol = 100: 250), and then fully soak the foam with a thickness of 5 mm in the slurry and squeeze the excess slurry. Air dry at 120°C. After air drying, the sample is immersed in the slurry again, and the excess slurry between the holes is blown off, and then air dried at a high temperature of 120°C. Repeat the above steps 5 times to obtain the required foam ceramic layer precursor;
[0067] (3) The material powder obtained in (1) is prepared in ...
Embodiment 3
[0073] In this embodiment, the method for preparing a wear-resistant and corrosion-resistant pipe or pipe fitting with dual ceramic linings includes the following steps:
[0074] (1) According to the mass ratio, phenolic resin: silicon carbide particles: p-toluenesulfonic acid = 100:50:5 ratio is mixed with the above raw materials, ball milled for 2 hours to obtain slurry; the silicon carbide particles have a particle size of 2 microns.
[0075] (2) Prepare a liquid thin slurry with the material powder obtained in (1) in a mass ratio (material powder: alcohol = 100: 300), and then fully soak the foam with a thickness of 5 mm in the slurry and squeeze the excess slurry. Air dry at 120°C. After air drying, the sample is immersed in the slurry again, and the excess slurry between the holes is blown off, and then air dried at a high temperature of 120°C. Repeat the above steps 5 times to obtain the required foam ceramic layer precursor;
[0076] (3) The material powder obtained in (1) ...
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