DF251 Two-component Polyurethane Adhesive is internationally recognized as one of the environment-friendly adhesives, whose formula is solvent-free and odor-free.
Used for binding foam plastic, aluminum honeycomb, paper honeycomb, etc. and metal materials (for instance, iron, aluminum, stainless steel); also can be used for arbitrarily cross-binding among concrete, wood, hard PVC plastic, rubber and plastic, ceramics, rigid foam materials, thermal insulation plate , and various composite plates, etc.
It can be cured at room temperature, also cured with heat; volume do not change before and after curing; after curing it has good strength and tenacity; curing parameters can be adjusted by adding a catalyst; adhesives have good adhesion to a variety of materials, with excellent features of impact resistance, peel resistance, vibration fatigue resistance, wear resistance, oil resistance.
Technical Parameters （25℃）
5 ： 1
Initial setting time (min)
Curing time (hours)
（vary due to substrate, curing conditions） 350-500 g/M sq
Initial adhesion formation
5-8hours (at room temperature)
Eventual adhesion formation
5-7 days (at room temperature); reaches the best strength after the 7th day
aluminum / aluminum, stainless steel / stainless steel, stone / stainless steel
1. The surface of target material should be kept clean and dry, when there is water or oil, the adhesive parameters will change, and bonding strength decrease.
2. First stir component A evenly, then mix component A with component B evenly by 5:1 (weight ratio); control the consumption according to the actual demand.
3. Evenly spread the mixed glue to the target surface with serrated scraper, wait for a while, and cover the glued-surface by evenly pressing; hot-pressing can increase the curing speed.
4. When cold-pressing, keep pressure at 5kg/cm2 for 3-6 hours; when hot-pressing, the temperature shall not exceed 85 ℃.
10/25/250 kg/barrel in plastic or iron barrel
In a dry room, to prevent moisture and frostbite.
Shelf life: 6 months.
The above information is to the best of my knowledge for your reference. Should you have any questions in application, or advice and criticism, please don’t hesitate to contact us and we will be very glad to answer them. Due to the continuous improvement of products, please forgive that such as the technical parameters in this manual are modified without prior notice. Welcome to visit our Website:www.dfchem.com.cn for further products' details.
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