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Halogen-free flame retardant epoxy resin prepreg and preparation method thereof

A technology of epoxy resin and prepreg

Inactive Publication Date: 2017-10-20
JIANGSU ZHAOJUN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Halogen-free high flame-retardant epoxy / glass fiber prepregs are widely used in sports equipment, sporting goods, aerospace and other fields. At present, composite products have higher and higher requirements for flame retardancy. The halogen content in the halogen flame retardant prepreg needs to be further reduced, and the intermediate materials of the existing composite materials cannot meet the requirements in this regard
[0003] In addition, general inorganic flame retardants often need to be added in large quantities to make the material have better flame retardancy, but at the same time, the addition of inorganic fillers makes the performance of the product significantly lower, which cannot meet the requirements of the overall performance of the material

Method used

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  • Halogen-free flame retardant epoxy resin prepreg and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: 20kg liquid bisphenol A epoxy resin 1821, 20kg novolac epoxy resin 638 and 30Kg solid bisphenol A epoxy resin 303L, 10kg1200 purpose aluminum hydroxide are placed in the reactor with vacuum device of 500L, Stir at 90°C for 30min, after mixing completely, get mixed solution A; add 4kg of curing agent 100S to mixed solution A, stir at 80°C for 30min, after stirring evenly, get mixed solution B; add 0.7 kg Accelerator UR500, after stirring at 80°C for 10 minutes, the mixed solution C is obtained, the viscosity of the mixed solution C is 20000-30000cps; the mixed solution C is placed in the glue applicator, and the thickness or film thickness of the film is detected by an infrared instrument reduce the temperature of the film to room temperature through the cooling plate to obtain the film used for the prepreg; then draw the above film from the upper and lower film rolls of the prepreg machine, and mix it with 150g of 70kg glass fiber cloth / m 2 The sandwich ...

Embodiment 2

[0031] Embodiment 2: 20kg liquid bisphenol A epoxy resin 1821, 20kg novolac epoxy resin 638 and 40Kg solid bisphenol A epoxy resin 303L, 9kg1200 purpose aluminum hydroxide are placed in the reactor with vacuum device of 500L, Stir at 80°C for 30min, after mixing completely, get mixed solution A; add 3kg of curing agent EQ14 to mixed solution A, stir at 70°C for 30min, after stirring evenly, get mixed solution B; add 0.5 kg accelerator UR300, after stirring at 70°C for 10 minutes, a mixed solution C is obtained. The viscosity of the mixed solution C is 10000-20000cps; the mixed solution C is placed in the glue applicator, and the thickness or thickness of the film is detected by an infrared instrument reduce the temperature of the film to room temperature through the cooling plate to obtain the film used for the prepreg; then draw the above film from the upper and lower film rollers of the prepreg machine, and mix it with 100kg glass fiber cloth 200g / m 2 The sandwich structur...

Embodiment 3

[0032] Embodiment 3: 30kg liquid bisphenol A epoxy resin 1821, 30kg novolac epoxy resin 638 and 50Kg solid bisphenol A epoxy resin 303L, 30kg1200 purpose aluminum hydroxide are placed in the reactor with vacuum device of 500L, Stir at 80°C for 30min, after mixing completely, get mixed solution A; add 8kg curing agent DDA-5 to mixed solution A, stir at 80°C for 30min, after stirring evenly, get mixed solution B; add to mixed solution B Add 5kg of accelerator EQ-20, and stir at 70°C for 10 minutes to obtain a mixed solution C, the viscosity of which is 50000-60000cps; put the mixed solution C in a glue applicator, and use an infrared instrument to detect the thickness of the film Or the surface density of the film, reduce the temperature of the film to room temperature through the cooling plate, reduce its curing degree, and prepare the film used for the prepreg; then lead the above film from the upper and lower film rollers of the prepreg machine , and 350kg glass fiber cloth 2...

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Abstract

The invention discloses a halogen-free flame retardant epoxy resin prepreg and a preparation method thereof. The halogen-free flame retardant epoxy resin prepreg mainly comprises, by weight, 70-110 parts of epoxy resin, 3-8 parts of a curing agent, 0.5-5 parts of a promoter, 9-30 parts of aluminum hydroxide and 70-350 parts of a glass fiber cloth. The preparation method has the advantages of simple process, and saving of the production cost. The above composite material has the advantages of good mechanical performances, excellent flame retardation property, and realization of no-pollution preparation. The preparation method of the halogen-free flame retardant epoxy resin prepreg has the advantages of simplicity, high efficiency, low cost, and realization of large-scale production.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to a halogen-free flame-retardant epoxy resin prepreg and a preparation method thereof. Background technique [0002] Commonly used halogen-free flame retardant prepregs are composite materials made of glass fiber cloth, epoxy resin, and other materials, which are processed by coating, hot pressing, cooling, laminating, and coiling. fiber prepreg. Halogen-free means that the content of halogen in the material is lower than a certain content. Lead (Pb), mercury (Hg), six Chromium (Cr 6+ ), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), the maximum allowable content is 0.1% (1000ppm), cadmium (cd) is 0.01% (100ppm). In addition, according to the regulations of the International Electrotechnical Commission IEC61249-2-2003, the bromine in the printed circuit board (PCB) substrate should not exceed 900ppm, the chlorine should not exceed 900...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/04C08K7/14C08K3/22C08G59/50C08G59/68C08J5/24
CPCC08L63/00C08G59/504C08G59/686C08J5/24C08J2363/00C08J2463/04C08K2003/2227C08K2201/003C08L2201/02C08L2205/02C08L2205/025C08L2205/03C08L63/04C08K7/14C08K3/22
Inventor 鲁平才杨智明
Owner JIANGSU ZHAOJUN NEW MATERIAL CO LTD