Wear Resistant Repair Polyurea

1. Basic level processing: must ensure that the original dry completely at the grass-roots level, the original structure with manual grinding machine grinding surface prominent flat, low-lying point based on cement mortar filling flat, rear can construction being dry, cracks more than 30 mm...

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Product Introduction

Basic level processing: must ensure that the original dry completely at the grass-roots level, the original structure with manual grinding machine grinding surface prominent flat, low-lying point based on cement mortar filling flat, rear can construction being dry, cracks more than 30 mm cement was used to repair, the base material with polymer cement putty sag, caves and cracks on the surface of the bridge, to ensure that the base surface roughness, surface error control in 2 mm, with Yin and Yang Angle parts with cement mortar as the rounded corners of R = 30-50 mm; Polish and clean the base base according to the requirements, according to the construction requirements of the grooving parts, after the grooving and the treatment of the base surface cleaning.

Primer construction: the two-component reaction type of primer material with a blender to fully stir, primer coating to achieve the role of sealing, primer to achieve uniform closure under the premise of thin, it is strictly prohibited to appear primer accumulation, foaming phenomenon. Apply the primer with brush, roller or spray evenly, wait for the primer to dry (generally 24 hours) before carrying out polyurea spraying.

Polyurethane spraying: feeding: first of all must fully confirm the accurate placement of A, B, and test the moisture content of A, B, the moisture content must be less than 1%, or can not be used. Only after confirming the accuracy can start the operation. After normal spraying starts, pay close attention to the pressure difference between A and B, mainly to see the deviation of the swing range of the pressure gauge needle, the pressure difference is more than 500, observe the film formation of the discharge, the pressure difference is more than 800 need to stop the gun, and close the pressure pump at the same time. After the overhaul of the gun, the pressure must be relieved to make A, B material pressure consistent, and then began to pressure spraying. Spray gun must be used to stop the gun immediately lock insurance, maintenance must close the manual valve. Observe the solidification state before spraying.

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