Electronic potting silicone perspective

Electronic products can be seen everywhere in life, then electronic potting material is produced in one of these products, there are common types of electronic potting LED electronic potting, economical electronic potting. 　　Well, first take a look at LED electronic potting, generally this type of two-component RTV silicone rubber, can be used in direct contact with the metal as an insulating material, can also be used in electronic and communications equipment。 instrumentation casting, sealing, as insulation, shockproof, moisture-proof packaging materials. LED electronic potting productions to note the following details, 　　1 base polymer of choice in the preparation of RTV silicone rubber on low molar mass must be strictly controlled to avoid the situation in the open or closed near the electrical contacts when the semi-enclosed electrical equipment used, the contact failure occurs. The choice of additives required pure as possible, so that the electrical resistance of vulcanized rubber can be guaranteed; 　　2 base material and the curing agent according to strictly proportions, time and materials may be used including complete curing time; Generally, the curing agent after mixing the base material, can be stored at 5 degrees Celsius Dafen longer time, heating may cause vulcanization , the heating temperature should not exceed 80 ° C, the surface of the plastic material in order to avoid cross-linking agent led to the phenomenon of stickiness. Incidentally remind you that if you want to shorten the curing time, and want to save sulfide material, it can increase the ambient temperature and increase humidity to increase the cure rate. 　　3 The last point is its electrical properties and this is some of the general characteristics of electronic potting, dielectric constant and dielectric loss tangent and other dielectric properties are smaller than other materials, and the frequency and temperature stability than love, oh flowers, corona resistant and arc. Add that the vulcanization process, using Bo layer potting potting or layered, can be resolved after the initial curing hair volume resistivity lows phenomenon. 　　Economical electronic potting and what features Precautions 　　General economical electronic potting impact resistance, weather resistance for complex electronic accessories, LED outdoor display, logo screens and other LED lamps denser distribution of electronic products watering. Although economical electronic potting a relatively good heat resistance, but in the heat sublimation to pay attention problems and corresponding solutions: 　　1 reversion phenomenon, the sealing state is heated by the action of residual catalyst, resulting in the curing agent to soften or become liquid. Also note that the thermal expansion coefficient of vulcanized rubber, and volume expansion coefficient of linear expansion coefficient. 　　2 layered on the perfusion process, each filled with 10 to 15mm thickness, the flow loss of a favorite place one hour after the infusion or filled, can be solved to produce condensation crosslinking played a volatile alcohol and excess residual crosslinking agent, the curing agent causes the expansion of cracking. 　　Want to know more silicone products, you can click the red 叶杰官 network users and dealers are welcome to negotiate, expert advice hotline :: 400 - 779 - 4008 or you can email us info@szrl.net.