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| Introduction | 2K inorganic zinc silicate shop primer comprising alkyl silicate, zinc powder and additives, etc. |
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| Applications | Applicable to the steel pretreating line for shipbuilding, heavy-duty machinery plant and steel structure processing, used as primer. |
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| Properties | Zinc powder shows good cathodic protection and rust resistance, additionally, shows good thermal resistance up to 400 ℃ and maintenance period within 6~9 months when the dry film thickness (DFT) is 20μm, small area ruined upon welding or cutting, excellent low temperature curing performance, solvent resistance, impact resistance, wearability and moderate flexibility. |
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| Film thickness and spreading rate |
DFT：20μm Theoretical spreading rate：90g/ m2 WFT: 53μm |
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| Physical performance |
Appearance：matt and gray Volume solid：38±3%（after blending） Flash point(Part A and Part B)： 13℃ Viscosity: 25~45 s |
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| Surface pretreatment |
Sandblasting to Sa2.5 as described in ISO standard, and surface roughness between 40-70μm; or St2 for surface treatment is required if using power tool. |
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| Application parameters |
ratio: A: B =2:1 (by weight) Coating method Airless spraying: recommended conditions: inlet pressure: 4~5kgf/ cm 2, compression ratio: 1:65, Type of nozzle: flow / spraying width --special nozzle Brushing : A precoating or small area of painting is recommended, but the dry film thickness must meet the specified requirements. Roller coating: Can be used in a small area of painting, but the dry film thickness must meet the specified requirements. Thinner: thinner JL107 Pot life : 30℃/8h Recommended coating layer(s): 1 layer, with its DFT 15~20μm Drying process |
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| Substrate temperature |
Touch dry | Hard dry （ heating at 120℃） |
recoating interval | ||
| shortest | longest | ||||
| 5℃ | 30min | 2-5 min | 24h | — | |
| 20℃ | 8 min | 2-5 min | 16h | — | |
| 30℃ | 5 min | 2-5 min | 8h | — | |
| Application conditions |
The substrate temperature≥ 5℃ and at least 3℃ higher than the dew point of the air temperature; The temperature and relative humidity shall be measured nearby the substrate to be coated; relative humidity ≤ 85%;Good ventilation is required useful for film drying process. |
| Typical coating compatibility |
Good compatibility with other coatings system based on chlorinated rubber, epoxy, epoxy asphalt, polyurethane and ethylene; avoid matching with coatings based on oil, alkyd, polyester. |
| Storage | The product must be stored under standard conditions as described by related state regulations, wherein the environment must be dry, cool, well ventilated and away from heat and/or fire. The packaging containers must be kept sealed. |
| Load and unload |
Cautious operation; Stir well before use. |
| Packaging specifications |
A (zinc paste) 20L/20kg B (main agent) 10L/10kg |
| Health and safety | Please note the warning logo labeled on packaging container and operate in a circumstance with good ventilation, avoid swallowing or inhaling paint mist, avoid skin contact or use suitable detergent, soap and water to clean immediately if the paint splashed on the skin, and use flowing clean water to rinse eyes if splashed, or carry on medical care immediately. For more details about health and safety as well as the cautions of the product, please refer to our "product safety manual" MSDS. |
| Claim | The information given on this product manual is derived from experiments and practical applications. We only guarantee the quality of the said product since conditions of use are beyond the , manufacture s control. We reserve the rights to revise the specifications of the product without prior notice. |
Coating intervals
at least 8 h for the shortest coating interval, Prior to coating, it is required to use wiping cloth dipped in JL107 thinner to scrub the JL704 film surface to determine whether completely cured or not. If zinc powder dissolved in cloth, it is indicated the film has not cured completely and must be driedcontinuously. If the relative humidity is lower than 70%, water should be sprayed on the surface of film, helpful for further curing and drying till the wiping cloth shows no color change subject to the film, indicating a complete cure, then the next layer can be followed. No limit is for the longest coating interval, but zinc salt must be removed from the surface before recoating.