Product Description
MT-85B one-component primer is a one-component polyurethane primer. MT-85B one-component primer cures by reacting in moist air to form a tough coating with corrosion and wear resistance. MT-85B one-component primer can thoroughly penetrate porous and water-permeable surfaces and has high adhesion to concrete surfaces. MT-85B one-component primer is one of the ideal primers for polyurea and polyurethane elastomer coatings.
Typical performance
| Solid content | 40% |
| Touch-free time | 1 hour (24℃ RH 5%) |
| Curing time | 12 hours (24℃ RH 5%) |
| Flexibility | 1/8 inch shaft bending at -20℃ |
| Service temperature limit | -45℃℃–93℃℃ |
| Adhesion | >2.5MPa with concrete |
| Viscosity | 150cps |
| Color | Light brown transparent |
Surface treatment
All surfaces must be clean and dry.
All previous paints, coatings or lacquers on the substrate must be completely removed unless they are strong and tightly adhered.
Packaging and mixing
Supply form: MT-85B one-component primer is a one-component paint, packed in 200-liter barrels, 200 kg per barrel.
Smaller packages (20 liter and 50 liter packages) can also be configured as needed.
From the time of transportation, the storage period is 6 months, and the storage conditions are: storage in a ventilated room at 5-35℃.
Before use, do not open the lid. Open the lid and use it.
Construction
MT-85B single-component primer should be applied by brush or roller. It can also be applied by single-component spraying.
For mortar base surface, it is generally necessary to apply one coat of MT-85B single-component primer at a coating rate of 0.2-0.25kg/square meter, and then proceed with subsequent construction.
MT-85B single-component primer should be topcoated within 12-48 hours after construction. If the topcoat construction cannot be completed within 48 hours, it is recommended to re-apply MT-85B single-component primer.
After painting, it should not rain within 24 hours. If it rains, it is necessary to check the curing of the coating film and re-apply the primer if necessary.
Restrictions and Warnings
MT-85B one-component primer is susceptible to moisture and must be protected from moisture contamination. Keep sealed. Containers must be sealed with a volatile gas to prevent contamination. After opening, if all components have not been used up, fill with nitrogen or dry gas and seal with wax.
MT-85B one-component primer in the can is flammable. Use only in well-ventilated areas. Avoid heat, fire, flames and fireworks. Use explosion-proof construction equipment. Avoid prolonged or repeated inhalation of vapors or sprays. Applicators should wear approved gas masks. Avoid contact with eyes and skin.
