Epoxy resin fire retardant and preparation method thereof, as well as epoxy resin composition prepared from fire retardant

A technology of epoxy resin and flame retardant, which is applied in the field of epoxy resin composition, epoxy resin flame retardant and its preparation, can solve problems such as environmental pollution, reduction of material mechanical properties, migration and precipitation of flame retardant, and achieve Solve environmental pollution problems, good synergies, good environmental effects
CN107759979AActive Publication Date: 2018-03-06WANHUA CHEM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WANHUA CHEM GRP CO LTD
Publication Date
2018-03-06

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Abstract

The invention discloses an epoxy resin fire retardant and a preparation method thereof, as well as an epoxy resin composition prepared from the fire retardant. The fire retardant structurally comprises CNT (carbon nano tube)-nitrogen-phosphorus which is combined by chemical bonds. Not only can the fire retardant in a process of being heated and decomposing generate a large number of wormlike expansion carbon layers which are inlaid with one other so as to reduce thermal conductivity, but also can release phosphorus-containing strong acid and nitrogen-containing inert gas which can be respectively used for promoting an anti-flamed base material to dehydrate into carbon and reducing oxygen concentration. By a chemical reaction method, the fire retardant can be introduced into an epoxy cross-linking structure, because of the existence of the strong-polar chemical bonds, the fire retardant is prevented from migrating to the surface of a material, the epoxy resin composition is suitable forelectric and electrical engineering fields, the service life of the material is prolonged, and the safety of the material is improved.
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Description

technical field

[0001] The invention belongs to the field of epoxy resin, and in particular relates to an epoxy resin flame retardant, a preparation method thereof, and an epoxy resin composition prepared by using the flame retardant. Background technique

[0002] Epoxy resin has excellent mechanical properties, electrical insulation, chemical corrosion resistance, heat resistance and adhesiveness after curing, and is widely used in many fields such as the automobile industry, electronics and electricity. Since epoxy resin is mainly composed of C, H, O and other elements, it has high flammability and continues to burn after leaving the fire, which is easy to cause fire. This shortcoming makes epoxy resin composite materials a great safety hazard.

[0003] The limiting oxygen index (LOI) of unmodified epoxy resin is only about 19%. It can continue to burn in the air and belongs to flammable products. The flame retardancy of epoxy resin has become the focus of its application....

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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