Zibo ShiNaite anti - corrosion Technology Co., Ltd
Contact: Wang Zhong
mobiles: 17663023308 15589303703
Address: Zibo City, Shandong Province Linzi District Qilu International Plastic City fine plasticized area 11-1
Due to the emergence of acid and alkali anti-corrosion equipment to solve the various sectors of the equipment easy to corrosion conditions, we are doing acid and alkali anti-corrosion coating coating operations, should pay attention to the following requirements? Zibo Shi Naite anti-corrosion Technology Co., Ltd. to introduce your construction methods:
1, matrix treatment
Metal matrix: before painting, should remove the surface of the oil, residual rust, foreign body and so on. Sand blasting to Sa2.5 local repair when the manual rust to St3 level that is used to remove residual paint brush, residual rust, oxide and so on. Concrete matrix: the surface should be dry, solid, solid, should not have sand, cracks, loose and other defects. No dirt, tartic acid, oil and release agent and other pollutants attached. If found to have the above attachments, the application of blade, wire brush, etc. to remove, and then rinse with water, dry before painting.
According to the weight ratio; the main agent: curing agent = 9: 1 (subject to the product specification, the ratio will be adjusted with different conditions) mixed, should continue to stir the main agent in the case, slowly into the curing agent Its full mixing evenly. Mixed with a good paint for 20min, with 60-80 mesh screen filter, and poured into another container in the spare. After the mixing of the coating is valid for 8 hours, please use according to the construction schedule.
3, environmental conditions
Spraying operations should be carried out as soon as possible after the matrix treatment, generally not more than 8 hours. The substrate surface temperature and ambient temperature is generally not less than 10 ℃, the surface temperature should be at least higher than the dew point of 3 ℃ above the air relative humidity of not more than 85%.
The coating can be applied using brush, airless spray and air assisted spray. After the first pass coating dry, the second time coating.
Under normal circumstances the paint does not require thinner, when the ambient temperature is too low can be used to adjust the viscosity and cleaning tools. Should be used, xylene: n-butanol: ethyl acetate = 5: 3: 2; or xylene: n-butanol = 7: 3 as the paint thinner.
Acid and alkali anti-corrosion coating by strong acid and alkali and alternating under the action of metal and non-metallic matrix corrosion series of heavy anti-corrosion protective coating. In the beginning of the design of paint formulations, based on the application of sub-areas, taking into account the comprehensive anti-corrosion coating paint performance, both to meet the protection requirements in corrosive environments, but also to meet the performance requirements of alternating performance fatigue, not due to internal stress Or thermal stress leaving the coating to be destroyed.