Polyester resin composition used for flexible flat cables

Abstract

The invention discloses a polyester resin composition used for flexible flat cables. The composition comprises, by mass: 42wt% of unsaturated polyester resin, 38wt% of a flame retardant, 13wt% of an inorganic filler, 3wt% of an anti-aging agent, 3wt% of a thickening agent, 0.5wt% of a viscosity reducer, and 0.5wt% of a normal temperature curing agent. The flame retardant is a halogen flame retardant, i.e. decabromodiphenylethane. The inorganic filler is titanium dioxide. The anti-aging agent is a plastic anti-aging agent. The thickening agent is matt powder. The viscosity reducer is an ME viscosity reducer. The normal temperature curing agent is methyl ethyl ketone peroxide or cyclohexanone peroxide. The composition not only has a stronger adhesive force to a metal conductor and an insulating layer, but also has good flame resistance and ageing resistance. The flexible flat cables prepared with the composition provided by the invention as an adhesive have excellent electric use performance.

Description

technical field [0001] The invention relates to a polyester resin adhesive, in particular to a polyester resin composition used for bonding metal conductors and insulating films in flexible flat cables. Background technique [0002] Flexible flat cable is a flat data cable component used for signal transmission. It has the advantages of arbitrary flexibility, high-speed signal transmission, and the number and spacing of wires can be selected arbitrarily, which makes the connection convenient, greatly reduces the volume of electronic products, and reduces production. Cost, improve production efficiency; widely used in computers, printers, mobile phones, liquid crystal displays and other electronic products between the mobile parts and the main board connection, in modern electrical equipment, almost everywhere. [0003] The flexible flat cable mainly includes three parts: a metal conductor, an insulating film layer and a reinforcing plate. Most of the metal conductors are mad...

AI Technical Summary

Problems solved by technology

Most of the existing flexible cable adhesives use unsaturated polyester resin as the adhesive. Although unsaturated polyester resin has excellent process performance and can be molded and cured under normal temperature and pressure, unsaturated polyester resin is used as flexible cable. There are still many deficiencies: firstly, due to the large shrinkage rate of the unsaturated polyester resin during curing, and the thickness of the metal conductor surface coating and the inter-conductor coating in the flexible cable, or the uneven texture of the unsaturated polyester resin, It is easy to cause inconsistent adhesion everywhere in the flexible cable, and the adhesive layer is easy to crack and deform

In addition, unsaturated polyester resin has good transparency, and it is prone to photocorrosion under the action of light, especially ultraviolet rays. In addition, under the combined effects of light, temperature changes and bending stress stimulation, the flexible cable is easy to form aging. Affect the service life of flexible cable

In addition, the flame retardancy and chemical corrosion resistance of unsaturated polyester resin are not suitable for the use requirements of today's flexible cables.