Halogen-free resin composition, and prepreg and laminated boards which are prepared from halogen-free resin composition

Abstract

The invention relates to a halogen-free resin composition, and a prepreg and laminated boards which are prepared from the halogen-free resin composition. The halogen-free resin composition comprises following ingredients, by weight, 5 to 45 parts of epoxy resin, 10 to 80 parts of benzoxazine resin, 0.5 to 25 parts of a curing agent, and 1 to 15 parts of a fire retardant. The invention also provides the prepreg, the laminated boards, and printed circuit-used the laminated boards which are prepared from the halogen-free resin composition. According to a preparation method, two kinds of benzoxazine resins are combined at a certain ratio, so that excellent heat and humidity resistance of the halogen-free resin composition is ensured, and resin composition roughness is increased effectively; and dielectric properties and machining properties of the prepreg, the laminated boards, and the printed circuit-used the laminated boards are excellent.

Description

technical field [0001] The invention relates to the technical field of laminated boards, in particular to a resin composition, in particular to a halogen-free resin composition and prepregs and laminated boards for printed circuits made of the same. Background technique [0002] With the implementation of the European Union's Restriction of Hazardous Substances (RoHS) and Greenpeace's efforts to promote the greening of the electronics industry, the halogen-free electronic materials have become the focus of evaluation in the industry after 2007. Compared with bromine-containing flame-retardant resins or flame retardants, phosphorus-based flame-retardant products have relatively less pollution after incineration, and have achieved rapid development in recent years. [0003] In order to achieve bromine-free flame retardancy, phosphorus-containing resins or flame retardants are usually used in the industry, and nitrogen-containing resins or flame retardants are used to achieve p...

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Problems solved by technology

The Chinese patent CN102504532A proposes that the combination of the preferred epoxy resin and benzoxazine can achieve excellent electrical properties, and at the same time, the performance of moisture and heat resistance and reliability can be taken into account; sex had a bad effect

Chinese patent CN103724997A discloses that benzoxazine and trifunctional epoxy resin with special structure achieve better comprehensive performance, but because trifunctional epoxy resin is easy to burn, the water absorption rate is high, and in view of its benzoxazine The characteristics of the resin, and its composition has certain limitations in terms of glass transition temperature, humidity and heat resistance reliability, etc.

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