Can be customized accroding to your needs.
Can be customized accroding to your needs.
| Acid and alkali resistant polyurethane encapsulation
Acid and alkali resistant polyurethane encapsulation.
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Created:
2020-12-10 15:03
Polyurethane encapsulation resin is easy to absorb water and deteriorate, so it should be sealed and stored and sealed after use. It is best to have a dehumidifier in the glue workshop, instead of using sticks with moisture such as wooden sticks to stir. The substrate should be dry and avoid using inks containing glycerin. Manual mixing will inevitably introduce bubbles, which requires vacuum deaeration. Hand-dropping PU is slow and requires high environmental humidity. The relative humidity must be between 40 and 60 to prevent foaming. Two-component polyurethane encapsulating resin is currently the most widely used material for manufacturing LED light bars and high-end trademarks. The reason is that its surface is plump, abrasion-resistant, impact-resistant, yellowing resistance, ultraviolet aging resistance, never hardening and Its long-term stability. Two-component polyurethane resin, clear and transparent, UV resistant, suitable for outdoor use. Either manual glue or machine glue is acceptable. Grinding and polishing the polyurethane encapsulation must be thorough, and no residual glue, rust spots, pits and flashes should be left; the metal primer or metal treatment agent must be evenly brushed, dry, and hot air blowing and drying should not be used; brushing Two times, evenly, one-way brush from one direction to the other, to avoid the formation of air bubbles and failure of the encapsulation, each brushing must wait for it to dry before the second brushing, after the second brushing, wait for it to dry. It can be encapsulated; when encapsulating, rolling and beating should be from the middle to both sides, so as not to generate bubbles and cause encapsulation failure; the size of the sealing should be calculated, and there should be no gaps and bulging bubbles.
Can be customized accroding to your needs.
Can be customized accroding to your needs.