Black halogen-free epoxy resin composition and covering film prepared from same

A halogenated epoxy resin and epoxy resin technology, which is applied in the field of black halogen-free epoxy resin composition and the cover film prepared by using the same, can solve the problems of immature price and high cost, and achieve excellent dimensional stability and good mechanical properties. Performance, effect of high peel strength
CN101851390AInactive Publication Date: 2010-10-06GUANGDONG SHENGYI SCI TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGDONG SHENGYI SCI TECH
Publication Date
2010-10-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a black halogen-free epoxy resin composition and a covering film prepared from the same. The black halogen-free epoxy resin composition comprises epoxy resin, CTBR (Carboxyl Terminated Butadiene Rubber), acrylic ester modified epoxy resin, a curing agent, a curing accelerator, carbon black powder, titanium dioxide, a phosphorus flame retardant, inorganic fillers and an organic solvent. The covering film prepared from the composition comprises a polyimide insulated film, a black halogen-free epoxy resin composition coating coated on the polyimide insulated film and release paper covered on the black halogen-free epoxy resin composition coating. The resin composition does not contain halogens, is black by adopting less carbon black powder to play the shading effect and adopts titanium dioxide to enhance the shading effect. Meanwhile, the acrylic ester modified epoxy resin is used so that a resin system reaches fire retardance and keeps favorable mechanical performance. The covering film prepared from the composition reaches the standards of surface resistance and volume resistivity, reaches a flame retardance level of UL 94 V-0 and has high peeling strength and excellent size stability, flexibility and processing performance.
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Description

technical field

[0001] The invention relates to a halogen-free epoxy resin composition, in particular to a black halogen-free epoxy resin composition and a covering film prepared by using the same. Background technique

[0002] The cover film for flexible printed circuit (FPCB) not only acts as a solder mask, but also protects FPCB from dust, moisture, and chemicals, and reduces the stress during bending. The cover film is coated with a layer of adhesive on the polyimide (PI) film, then baked to remove the solvent, and then compounded with the release paper. Commonly used adhesives include epoxy resin, acrylate, polyester, etc., such as JP-A-2004-137437, WO2008 / 136096, CN 1847352A, CN 1670107A, etc. Among them, there are mainly two types of acrylate and epoxy resin. , both have their advantages and disadvantages. The acrylate-based cover film has a long storage period and good adhesion, but its heat resistance is poor; the epoxy resin system has excellent heat resistance, b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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