LOW DIALECTRIC COMPOSITE MATERIAL AND LAMINATE AND PRINTED CIRCUIT BOARD THEREOF

摘要

The present invention belongs to the technical field of resin composite materials, in particular relates to a low dielectric composite material and a laminate and printed circuit board prepared therefrom. The composite material is obtained by adhering a low dielectric resin composition with phosphorus-containing flame retardant onto a substrate; the composition comprises the following components: (A) phosphorus-containing flame retardant; (B) vinyl compound. The phosphorus-containing flame retardant has a structure as shown in formula (I).;;In the present invention, diphenylphosphine oxide is derivatized, and prepared a phosphorus-containing flame retardant, which has no reactive functional groups, has better dielectric properties, and has high melting point, and upon combining with a vinyl compound, a resin composition is obtained, and a composite material having low thermal expansion ratio, high heat resistance, high glass transition temperature, and low dielectric constant and dissipation factor, can be made from the resin composition, and a laminate and printed circuit board having the properties of high glass transition temperature, low dielectric properties, halogen-free flame retardancy, low thermal expansion coefficient of the laminate, etc., can be made from the composite material.

主权项

1. A low dielectric composite material made from a low dielectric resin composition with phosphorus-containing flame retardant and a substrate;
The low dielectric resin composition with phosphorus-containing flame retardant, comprises the following components: (A) phosphorus-containing flame retardant; (B) vinyl compound; wherein, the phosphorus-containing flame retardant has a structure as shown in formula (I) wherein, A is a covalent bond, C6—C12 arylene, C3—C12 cycloalkylene, C6—C12 cycloalkenylene, methylene or C2—C12 alkylene; R1 and R2 are the same or different, and are each a H, alkoxy, aryloxy, alkyl, aryl or silyl, respectively; R3 and R4 are the same or different, and are each a H, hydroxyl, and C1—C6 alkyl, respectively, or one and only one of R3 and R4 forms a carbonyl with a C; each of n is a positive integer of 1˜6 independently.