Urgent!!! Floor anti-corrosion. I would like to ask those with more experience: which type of primer can be used as a substitute for epoxy E-44?
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The process involves: two coats of epoxy E-44 primer + three layers of fiberglass reinforced plastic made with epoxy E-44 + granite lining made with furan resin. Due to the extremely tight schedule, the moisture content in the substrate did not meet the specified requirements; therefore, at the client’s request, an aqueous epoxy is being used as the primer. This type of primer has lower requirements regarding moisture content, and its strength and adhesion properties are fairly similar to those of epoxy E-44. ) Please, senior colleagues, share your opinions on which primer to use. Manufacturer, relevant data, experience with similar projects, etc. Urgent need! ! Thank you.
This post was last edited by ljchb on 2010-6-22 at 13:56. The focus is not on the resin, but on the curing agent. The T31 curing agent, which is widely used today, can be applied to wet surfaces, provided there is no visible water; more importantly, it is essential that the underlying surface be properly cured. Areas below the groundwater level must be made waterproof. The advantage of water-based coatings is their environmental friendliness, but the performance of current water-based coatings, including water-based epoxy coatings, still falls short of that of solvent-based coatings. Therefore, it is not recommended to use water-based coatings in corrosion protection projects unless their viability has been proven through rigorous testing and long-term application.
Reply to 2# ljchb: When constructing the floor in civil engineering, geotextile membranes were used as a layer beneath the concrete. Then, the floor has been under maintenance for over 28 days so far. However, during the maintenance period, water seeped into the floor on multiple occasions. Can this condition also be used with E-44 (T-31 curing agent) as a primer?
Is the water seeping out from beneath the floor? The waterproofing isn’t done properly, I guess. Coordinate with the client to ensure that the civil engineering team addresses the water seepage issue before carrying out the anti-corrosion treatment; otherwise, if delamination or peeling occurs after the treatment is done, it will be difficult to explain.
Reply to 4# ljchb: The initial rainproof measures were not adequate, which led to water seeping into the concrete base layer. If it doesn’t rain in the next one or two days, I plan to apply a primer first; I think there shouldn’t be any major problems. Thank you very much for your advice. I hope we’ll have the opportunity to work together.
Generally speaking, this kind of situation can be resolved entirely with polymer composite materials. Thanks to their oil resistance, water resistance, resistance to acid and alkali corrosion, wear resistance, and ease of use (a single coating is sufficient to protect the floor), these materials are well-suited for protecting floors in harsh environments. I have examples of floor protection projects using my Haichuan Space products; I hope they will be useful to you!
Reply to 1# tangzl: The overall performance of water-based epoxy floors is now no worse than that of solvent-based epoxy floors. Moreover, their advantage lies in their resistance to moisture in the underlying surface, making them very suitable for use on concrete surfaces that are humid.