PUR Reactive Hot Melt Adhesive Glass Metal Plastic Tablet Computer Smart Home Appliance Adhesive
Description:
KL-21 PUR hot melt adhesive is a single-component polyurethane hot melt adhesive with 100% solid content. The product is solid at room temperature. After gluing is completed, the product will react with the moisture of the surrounding environment to produce a strong bonding, and no additional heating is required during the reaction process.
1. High initial adhesion, long opening time, suitable for large area bonding
2. Can bond ABS, PBT, PVC, nylon, glass fiber, glass, metal and materials with low surface energy.
3. Good heat resistance and solvent resistance.
4. Good impact resistance.
1.Bonding plastic shell and metal parts of electronic equipment.
2. Large area bonding field.
Technical Parameters before curing:
Appearence: | White solid, transparent in molten state |
Solid content: | 100% |
Viscosity: | 4200±500CPS(110℃) |
Open time: | 1-6 mins |
Sizing temperature: | 110-120℃ |
Technical Parameters after curing:
Thermal expansion | 168.6μm/mk |
Thermal Conductivity | 0.36W/mk |
Specific heat | 2.7KJ/(Kg.K) |
Elongation | >400% |
Shore hardness | 24D |
Elasticity modulus | >200MPa |
Tensile strength | |
Tensile shear strength(PMMA&PMMA) | 9.1MPa |
Curing condition 25℃ | 50%-70%RH,Full cure 7 days |
Curing rate curve:

Curing condition 25℃; 50%-70%RH;
Test substrate PC&PC;
Processing:
1. The sizing surface should be clean, dry and oil-free. Since the surface of the plastic material often has residual release agent components, such as the bonding of the plastic material is not strong enough, it is recommended to use solvent wiping or polishing and other surface treatment methods on the plastic surface.
2. The substrate temperature should not be lower than 20℃ Too low application temperature will shorten the opening time, resulting in weak bonding. If necessary, the substrate can be pre-heated.
3. Please use special melting equipment for melting and coating. Pay attention to prevent burns during use. If the equipment is temporarily shut down for a long time, reduce the temperature of the equipment; otherwise, the glue viscosity will increase
Packaging:
30ml/PCS or 310ml/PCS
Shelf life for 12 months, stored at 0-25℃ dry place, away from fire, light and heat.
FAQ:
Q1. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the plastic tooling and fixtures.
Q2. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q3. How do you guarantee the quality?
A: We have a strict quality inspection system certificate, ISO 9001 certification. From raw materials to finished products, the whole process must be check signed by QC department.
Q4.What kinds of adhesive do you have?
A: We offer kinds of different glue to meet your request. Such as Cyanoacrylate adhesive (super glue), Modified hot melt adhesive, Tape primer, Adhesion promoter and so on.