Special light-curing waterproofing materials for enameled wires

2024-02-18 13:53:47

Special light-curing waterproofing materials for enameled wires

Proportion of raw materials
The waterproof coating for enameled wire enamels consists of the following components by weight: polyurethane modified acrylate light-curing resin 20-45%, polyurethane resin 20-60%, fluorocarbon waterproofing function diluent 14-30%, light-curing cross-linking agent 5-10% % diluent, and 1-5% photoinitiator. Light-curing waterproof coating is prepared by pre-mixing and pre-curing the components at a temperature of 20-25 °C.

Advantages
Enameled wire surface treatment with light-curing waterproof coating can meet the requirements of fracture strength and waterproofing: breakdown voltage ≥ 3.5 kv, the coating in the underwater stretching, bending or underwater kneading does not produce air holes, no holes in the general salt water. ≤ 1, with light curing method to solve the problem Existing enameled wire coating is characterized by high energy consumption, environmental risks, to the production of enterprises to bring convenience and affordability.

Waterproof coating has efficient water-repellent function.

How to make waterproof coating for enameled wire?
(1) Photosensitive polyurethane modified polyacrylate resin and polyurethane resin are prepared proportionally and obtained by high-speed mixing.
(2) Add water-repellent fluorocarbon functional diluent and photosensitive bridging diluent into the reactor slowly and stir until mixed;
(3) Slowly add the photoinitiator while stirring, stirring evenly and sealing to obtain the light-curing coating.
Preferably, said preparation method is carried out at 20-25°C.