Unlock instant, AI-driven research and patent intelligence for your innovation.

Halogen-free flame retardant epoxy resin composition and high-flexibility coating film prepared by same

A technology of epoxy resin and flexible epoxy resin, which is applied in the direction of synthetic resin layered products, layered products, chemical instruments and methods, etc., which can solve the problem of poor mechanical properties of the covering film, poor flexibility of the covering film, and affecting subsequent use, etc. problems, to achieve excellent dimensional stability, excellent softness, and enhanced compatibility

Active Publication Date: 2012-07-25
GUANGDONG SHENGYI SCI TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the addition of a large amount of phosphorus-based flame retardants and other inorganic fillers, the mechanical properties of the cover film may be poor, the water absorption is high, and there is a danger of small molecule fillers oozing or migrating to the surface during processing or subsequent use; at the same time, due to the use of ordinary Structured epoxy resin, the prepared cover film has poor flexibility, which affects subsequent use

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Halogen-free flame retardant epoxy resin composition and high-flexibility coating film prepared by same
  • Halogen-free flame retardant epoxy resin composition and high-flexibility coating film prepared by same
  • Halogen-free flame retardant epoxy resin composition and high-flexibility coating film prepared by same

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] The above composition is used for the preparation of the cover film: use an organic solvent to mix the required components to form a black liquid dispersion of the composition of the present invention, and use a coating device to coat the dispersion on the polyimide insulating film; Make the insulating film coated with the dispersion pass through an online drying oven, heat at 80-160° C. for 2 to 8 minutes, thereby removing the mechanical solvent and drying the composition to form a layer containing the composition in a semi-cured state, and then Composite with release paper at 80-100°C and wind up to get a highly flexible, halogen-free cover film.

[0048] For the highly flexible halogen-free cover film produced above, its glue overflow, flexibility, heat resistance, flame retardancy and peel strength were tested, and the following examples are further illustrated and described in detail.

[0049] The embodiments of the present invention are described in detail as foll...

Embodiment 1

[0051] Flexible epoxy resin (product model EXA-4816, epoxy equivalent 403g / eq, manufactured by Dainippon Ink Co., Ltd.) 10.0 parts by weight; biphenyl epoxy resin NC-3000 40.0 parts by weight; synthetic rubber (product model Nipol 1072CG, propylene Nitrile content 27% by mass, manufactured by Zeon Corporation) 25.0 parts by weight; Rubber-modified epoxy resin (product model Hypox RF928, elastomer content 20% by mass, CVC Specialty Chemicals Inc., manufactured) 25.0 parts by weight; Diaminodiphenylsulfone 6.05 parts by weight; 0.2 parts by weight of 1-cyanoethyl-2-ethyl-4-methylimidazole (2E4MZ-CN); antioxidant (product model DNP, manufactured by Kaiyuan Fine Chemical Factory, Qujiang District, Quzhou City, Zhejiang Province) 0.3 parts by weight; 12.0 parts by weight of phosphorus-containing flame retardant (product model OP-930, manufactured by Clariant, Germany); 20.0 parts by weight of aluminum hydroxide (average particle size is 1 to 5 μm, purity above 99%). The solid conte...

Embodiment 2

[0053] Flexible epoxy resin (product model EXA-4816, epoxy equivalent 403g / eq, manufactured by Dainippon Ink Co., Ltd.) 20.0 parts by weight; biphenyl epoxy resin NC-3000 30.0 parts by weight; synthetic rubber (product model Nipol 1072CG, propylene Nitrile content 27% by mass, manufactured by Zeon Corporation) 25.0 parts by weight; Rubber-modified epoxy resin (product model Hypox RF928, elastomer content 20% by mass, CVC Specialty Chemicals Inc., manufactured) 25.0 parts by weight; Diaminodiphenylsulfone 5.69 parts by weight; 0.2 parts by weight of 1-cyanoethyl-2-ethyl-4-methylimidazole (2E4MZ-CN); antioxidant (product model DNP, manufactured by Kaiyuan Fine Chemical Factory, Qujiang District, Quzhou City, Zhejiang Province) 0.3 parts by weight; 12.0 parts by weight of phosphorus-containing flame retardant (product model OP-930, manufactured by Clariant, Germany); 20.0 parts by weight of aluminum hydroxide (average particle size is 1 to 5 μm, purity above 99%). The solid conte...

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
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a halogen-free flame retardant epoxy resin composition and a high-flexibility coating film prepared by same. The halogen-free flame retardant epoxy resin composition comprises flexible epoxy resin, special epoxy resin, synthetic rubber, rubber modified epoxy resin, an aromaticamine curing agent, an imidazole curing accelerator, an antioxidant, a phosphorus-containing flame retardant, a filler, and an organic solvent. The high-flexibility coating film prepared by the composition comprises a polyimide insulating film, a halogen-free flame retardant epoxy resin composition coating coated on the polyimide insulating film, and a piece of release paper coated on the halogen-free flame retardant epoxy resin composition coating. The halogen-free flame retardant epoxy resin composition of the invention does not contain halogen, and can keep better mechanical property and flexibility while the resin system achieves the flame retardance. The high-flexibility coating filmprepared by the composition has flame retardance achieving UL94V-0 level, high peel strength, excellent flexibility, and excellent size stability, ion migration resistance and processing performance.

Description

technical field [0001] The invention relates to a flame-retardant epoxy resin composition, in particular to a halogen-free flame-retardant epoxy resin composition and a highly flexible covering film prepared by using the composition. Background technique [0002] Halogen-free cover film has become a trend. Ordinary cover films use brominated resins with high bromine content or bromine-containing flame retardants to achieve flame retardant purposes. Although they have good flame retardant effects, they will cause corrosion during combustion. And highly toxic hydrogen halide gas, and the amount of smoke is large, there may be a hidden danger of carcinogenic dioxins when the combustion is incomplete. In order to meet the green environmental protection trend of "lead-free process" and "halogen-free materials", the entire industry chain is actively responding. Some large-scale electronic product manufacturers claim to switch to halogen-free materials in an all-round way. For flex...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L9/02C08L13/00C08K13/02C08K5/18C08K5/41C08K5/3445B32B27/10B32B27/28
Inventor 刘生鹏茹敬宏伍宏奎
Owner GUANGDONG SHENGYI SCI TECH