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Fire retardant phosphorus-containing epoxy powder composition

A technology of epoxy powder and composition, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems that cannot be applied to powder systems, etc., and achieve the effects of broad market prospects and potential, stable performance indicators, and simple synthesis process.

Active Publication Date: 2008-11-19
天津凯华绝缘材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a flame-retardant phosphorus-containing epoxy powder composition, which uses solid phosphorus-containing epoxy resin, nitrogen-containing curing agent and additive nitrogen-containing flame retardant Cooperate to get, solve the problem in the prior art that the liquid phosphorus-containing epoxy resin cannot be applied to the powder system due to manufacturability requirements, synthesize a solid phosphorus-containing epoxy resin, and apply it to the epoxy powder system, which is the present Halogen antimony flame retardant system provides technical support for switching to non-halogenation

Method used

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  • Fire retardant phosphorus-containing epoxy powder composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Embodiment 1: prepare epoxy powder composition according to following material and ratio thereof:

[0076] Epoxy resin E12 22.75 parts by weight

[0077] Phosphorus-containing epoxy resin A 27.75 parts by weight

[0078] 4.63 parts by weight of phthalic anhydride

[0079] Imidazole 0.10 parts by weight

[0080] Silica powder 35.43 parts by weight

[0081] 9.10 parts by weight of melamine cyanuric acid (MCA)

[0082] Phthalocyanine blue 0.24 parts by weight

[0083] The above-mentioned substances are accurately weighed and added to a small high-speed mixing equipment. After being fully mixed, they are melted and extruded using a twin-screw extruder. The extruded melt is cooled and pressed into tablets, crushed, passed through a 100-mesh screen, and the upper layer of coarse material is discarded to obtain a flame-retardant phosphorus-containing epoxy powder composition. Then, the obtained epoxy powder can be tested for performance. The sample bar of a certain size...

Embodiment 2

[0085] Embodiment 2: prepare epoxy powder composition according to following material and ratio thereof:

[0086] Phosphorus-containing epoxy resin A 47.73 parts by weight

[0087] 6.25 parts by weight of phthalic anhydride

[0088] Imidazole 0.15 parts by weight

[0089] Silica powder 45.68 parts by weight

[0090] Phthalocyanine blue 0.19 parts by weight

[0091] The above materials were mixed and processed according to the operation mode of Example 1 to obtain a flame-retardant phosphorus-containing epoxy powder composition.

[0092] The measured horizontal flow rate of the flame-retardant phosphorus-containing epoxy powder composition is 28%, the gelation time is 53s, and the flame-retardant grade evaluated by the UL94 flame-retardant test is V0 grade.

Embodiment 3、4

[0093] Embodiment 3,4: prepare epoxy powder composition according to following material and ratio thereof:

[0094] Table 1

[0095] Example 3

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Abstract

The invention relates to a fire-retardant phosphoric epoxy powder composition, which is an epoxy powder composition prepared by matching solid phosphoric epoxy resin, general solid epoxy resin, curing agent, pigment, filler, fire retardant and so on. The composition prepared does not contain halogenated and antimonic fire retardant, red phosphorus and so on, can meet the fire-retardant standard of UL94 V0, has superior electroinsulating property, and is widely applied in the electronic component packaging field. The fire-retardant phosphoric epoxy powder composition synthesizes solid phosphoric epoxy resin which is then applied to an epoxy powder system, thereby the problem that liquid phosphoric epoxy resin in the prior art can not be applied to the powder system due to the technological requirements is solved and the technical support is provided for converting the prior halogenated and antimonic fire-retardant system into non-halogenation.

Description

technical field [0001] The invention belongs to the field of packaging of electronic components, in particular to a flame-retardant phosphorus-containing epoxy powder composition. Background technique [0002] Epoxy resin is a widely used thermosetting resin, which has excellent physical and mechanical properties, electrical insulation properties, chemical resistance and low temperature shrinkage, and is widely used in coatings, adhesives and other fields. The epoxy powder composition prepared by solid epoxy resin and curing agent with other appropriate pigments and fillers inherits a series of advantages of epoxy resin, and has excellent heat resistance, adhesion, solvent resistance, and electrical insulation Such excellent process performance and low cost are widely used in the field of encapsulation and protection of electronic devices. [0003] The limiting oxygen index (LOI) of ordinary epoxy resin is about 19.8, and the volume fraction of oxygen in the air is 21%, so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K13/02C08K5/16C08K3/22C08G59/14C09K3/10
Inventor 周庆丰高卫国席小悦
Owner 天津凯华绝缘材料股份有限公司
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