1. The stability of the counterfeit polyurea product is relatively poor, which will seriously shorten the life of the product and cause the product to be scrapped in advance. The inferior polyurea product has poor bonding effect, and there will be a degumming phenomenon at the wire connection, which affects its waterproof, shockproof and dustproof functions.
2. The fake and inferior polyurea product has poor anti-mildew function, and the product will have mildew phenomenon, which will damage the material properties of the adhesive. Poor flame retardant performance, can not resist the spark discharge phenomenon of electronic components, may cause a fire. Poor insulation performance, breakdown occurs in the application of the product, resulting in leakage.
3. The water absorption rate of the fake polyurea product is large, which will lead to the crystallization of the product. It is easy to generate air bubbles, which can not even be vacuumed and damage the performance of the circuit board.
4. The liquidity of the counterfeit polyurea product is not good when it is filled and sealed, and it can not be filled by the potting. There is too much glue in the pouring place and there is no glue around it, which is not easy to operate. Poor bonding, there will be debonding at the wire connection, affecting its waterproof, shockproof and dustproof functions.
5, the fake inferior polyurea product is too soft or too hard after curing, anti-impact or shockproof, poor waterproofing ability. And after curing, it is easy to produce slag, which leads to difficulty in repairing and scrapping.
