chemlok 205tw

Wide range of uses - can be used as a base coat in conjunction with various Chemlok top coat adhesives, such as Chemlok230 series, Chemlok250 series or Chemlok6000 series adhesives.
Simple coating - simple coating method, brushing, spraying, dipping or rolling; suitable for existing production lines. Strong durability - used in conjunction with Chemlok topcoat adhesive, high tear strength and excellent environmental resistance. Easy to use - It can be used as a single-dose adhesive to bond some NBR to hard substrates through the vulcanization process.

SURFACE PREPARATION - Thoroughly clean metal surfaces before applying adhesive. Use a solvent-based degreaser or alkaline cleaner to degrease metal surfaces. Choose the appropriate chemical cleaning or mechanical cleaning method to remove rust spots and oxide layers on the metal surface.

• chemical cleaning

  The chemical treatment process can be adjusted at any time for automated metal treatment and color coating lines. Chemical treatments can also be used on metal parts that would be deformed by blasting or where very tight dimensional tolerances are required. Phosphating is a common treatment method for steel, while aluminum is usually treated with a chemical film.

• mechanical cleaning
  Sandblasting is the most common method of mechanical cleaning. In addition, mechanical cleaning methods include steel brush cleaning, grinding or machining. Use steel grit to blast clean steel, cast iron or other ferrous metals. Stainless steel, aluminum, brass, zinc and other non-ferrous metals are treated with aluminum oxide, sand or other non-ferrous metal grit.

Stirring - Before coating Chemlok205TW, please stir thoroughly and evenly. During use, it also needs to be fully stirred to keep the solid content in a uniform state. Agitate as recommended below for pack size to ensure an even blend and a consistent appearance.
Chemlok 205TW generally does not need to be thinned when applied by brush, dip and roller. When spraying, thin the primer to a viscosity of 18 -20 seconds measured with a Zahn Viscosity Cup No. 2. Chemlok 205TW primer can be diluted with ketone solvents, such as MIBK or \MEK. Please add thinner slowly to base coat while stirring. Dilution will accelerate precipitation, please pay special attention to stirring. For more information, see Chemlok Adhesive Application Guide.

Application - Chemlok 205TW may be applied by brushing, dipping, rolling or spraying or any process that will provide a uniform coating. Typically the dry film thickness of Chemlok 205TW primer should be 5.1-10.2 micron (0.2-0.4 mil). If Chemlok 205TW is used on sandblasted substrates, used in conjunction with Chemlok220 series adhesives, or used as NBR adhesives, the dry film thickness of Chemlok 205TW should be controlled at the upper limit of the aforementioned film thickness range, for all For other applications (such as forged or smooth substrates), the dry film thickness of Chemlok 205TW should be controlled at the lower limit of the aforementioned film thickness range.

Drying/Vulcanization - Parts coated with Chemlok 205TW should be thoroughly dried prior to application of topcoat adhesive. Reaching this requirement takes about 30-45 minutes at room temperature. The forced drying temperature is best controlled at 65°C - 93°C and sufficient circulating air is provided, and hot air at 149°C can be used for drying in a short time. Usually the drying effect of low temperature and high ventilation is the best. After the workpiece is dry, apply the top coat adhesive in the same way. Chemlok 205TW coating film is non-tacky after drying, so coated objects can be stacked in trays for subsequent processing. Clean gloves should be worn when handling coated objects, and a cover should be added to the tray to prevent contamination. If the object is properly protected, it can be stored for at least one month after the coating is completed before applying the top coat adhesive.

Clean Up - Clean up spills with a rag dampened with MEK.