Intrinsic flame-retardant epoxy resin and preparation method thereof

A technology of epoxy resin and intrinsic type, which is applied in the field of intrinsic flame-retardant epoxy resin and its preparation, can solve the problems of epoxy resin flammability and other problems, achieve good compatibility, high efficiency, and simple preparation method Effect

Inactive Publication Date: 2021-09-03
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of epoxy resin flammability, provide a kind of intrinsic flame retardant epoxy resin and preparation method thereof

Method used

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  • Intrinsic flame-retardant epoxy resin and preparation method thereof
  • Intrinsic flame-retardant epoxy resin and preparation method thereof
  • Intrinsic flame-retardant epoxy resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 100 parts by weight of epoxy resin and 2.5 parts by weight of phosphorus-containing triazole compound were reacted at 100°C for 20 minutes; then 25 parts by weight of 4,4'-diaminodiphenylmethane were added and stirred until a uniform epoxy solution was obtained; After the epoxy solution is evacuated to remove air bubbles, it is poured into a preheated mold for thermal curing; after curing, it is naturally cooled to room temperature and demolded to obtain an intrinsic flame retardant epoxy resin material.

[0024] The prepared epoxy resin samples were subjected to limiting oxygen index test and vertical burning test. The size of the limiting oxygen index test sample is 120mm×6mm×3.2mm; the size of the vertical combustion sample is 130mm×13mm×3.2mm. The test results are shown in Table 1.

Embodiment 2

[0026] 100 parts by weight of epoxy resin and 2.5 parts by weight of phosphorus-containing triazole compound were reacted at 120°C for 15 minutes; then 25 parts by weight of 4,4'-diaminodiphenylmethane were added and stirred until a uniform epoxy solution was obtained; After the epoxy solution is evacuated to remove air bubbles, it is poured into a preheated mold for thermal curing; after curing, it is naturally cooled to room temperature and demolded to obtain an intrinsic flame retardant epoxy resin material.

[0027] The prepared epoxy resin samples were subjected to limiting oxygen index test and vertical burning test. The size of the limiting oxygen index test sample is 120mm×6mm×3.2mm; the size of the vertical combustion sample is 130mm×13mm×3.2mm. The test results are shown in Table 1.

Embodiment 3

[0029] 100 parts by weight of epoxy resin and 2.5 parts by weight of phosphorus-containing triazole compound were reacted at 140°C for 10 minutes; then 25 parts by weight of 4,4'-diaminodiphenylmethane were added and stirred until a homogeneous epoxy solution was obtained; After the epoxy solution is evacuated to remove air bubbles, it is poured into a preheated mold for thermal curing; after curing, it is naturally cooled to room temperature and demolded to obtain an intrinsic flame retardant epoxy resin material.

[0030] The prepared epoxy resin samples were subjected to limiting oxygen index test and vertical burning test. The size of the limiting oxygen index test sample is 120mm×6mm×3.2mm; the size of the vertical combustion sample is 130mm×13mm×3.2mm. The test results are shown in Table 1.

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Abstract

The invention discloses intrinsic flame-retardant epoxy resin and a preparation method thereof. The preparation method comprises the following steps: reacting epoxy resin with a reactive flame retardant at a certain temperature for a period of time; then adding a hardening agent, and stirring until a uniform solution is obtained; vacuumizing the epoxy solution to remove bubbles, and pouring the epoxy solution into a preheated mold for thermocuring; and after curing, naturally cooling to room temperature to obtain the intrinsic flame-retardant epoxy resin material. The intrinsic flame-retardant epoxy resin prepared by the method has excellent flame retardance, when the dosage of the reactive flame retardant in the epoxy resin is 2.5%, the oxygen index can reach 31.6%, and when the dosage of the reactive flame retardant in the epoxy resin is 5%, the vertical combustion grade can pass the UL-94 V-0 grade, and compared with pure epoxy resin, the flame retardance is obviously improved.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to an intrinsic flame-retardant epoxy resin and a preparation method thereof. Background technique [0002] Epoxy resin (epoxy resin, EP) is widely used in daily life, because of its small shrinkage during the curing reaction, and epoxy resin has good electrical insulation, heat resistance and corrosion resistance. Used in high-tech fields such as aerospace and transportation, it has become an important thermosetting polymer material and one of the indispensable materials in industry. However, epoxy resin is a kind of flammable material, which burns rapidly after being ignited and releases a large amount of heat. , which poses a huge threat to people's lives and property safety, which greatly limits the application and development of epoxy resins, so it is necessary to improve the flame retardant properties of epoxy resins. [0003] At present, the types of flame retard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/14C08G59/50C08L63/00
CPCC08G59/1488C08G59/5033C08L63/00C08L2201/02
Inventor 简荣坤何玲香刘鑫铎郑贤庭董瑛琦
Owner FUJIAN NORMAL UNIV
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