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Modified thermosetting resin and preparation method thereof

A technology of thermosetting and curing resin, applied in the field of modified thermosetting resin and its preparation, can solve the problem of not involving dielectric properties, etc., and achieve the effects of not harsh molding conditions, good toughness, and simple and easy process

Active Publication Date: 2016-02-17
太湖华强科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As mentioned above, low dielectric constant is an important performance index of high-performance resins used in the fields of electronic information, electrical insulation, etc. However, in the research on block copolymer modified thermosetting resins, the prior art has not yet involved its dielectric properties

Method used

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  • Modified thermosetting resin and preparation method thereof
  • Modified thermosetting resin and preparation method thereof
  • Modified thermosetting resin and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] (1) Fluorinated polyimide -b- Preparation of polysiloxane block copolymer copolymer

[0039] N 2 Under protection, at 25°C, 0.6726g of 4,4'-diaminodiphenyl ether was dissolved in 15mL of N,N'-dimethylacetamide to obtain solution A; 1.5927g of hexafluorodianhydride was added to solution A, and then the temperature Raise to 150°C, and keep it warm for 2 hours to obtain solution B; 2 / g) dissolved in 2mL N,N'-dimethylacetamide to obtain solution C; at 150°C, add solution C dropwise to solution B, and then add 3mL toluene; heat up to 180°C and react for 4h to obtain reaction System D: lower the temperature of reaction system D to 25°C, slowly pour it into 100mL of methanol and stir, and precipitate a powdery product, which is dried to obtain crude product E. The crude product E was dissolved in 10 mL of dichloromethane and precipitated with 80 mL of methanol. After drying at 120°C for 5h and at 80°C for 10h, a fluorine-containing polyimide was obtained -b- Polysiloxane...

Embodiment 2

[0047] (1) Fluorinated polyimide -b- Preparation of Polysiloxane Block Copolymer

[0048] N 2 Under protection, at 25°C, 0.5381g of 4,4'-diaminodiphenyl ether was dissolved in 13mL of N,N'-dimethylacetamide to obtain solution A; 1.3439g of hexafluorodianhydride was added to solution A; then the temperature Raise to 150°C, and keep it warm for 2 hours to obtain solution B; 2 / g) was dissolved in 3mL N, N'-dimethylacetamide to obtain solution C. At 150°C, add solution C dropwise to solution B, then add 2.5mL toluene, raise the temperature to 180°C, and react for 4 hours to obtain reaction system D; lower the temperature of reaction system D to 25°C, and slowly pour it into 80mL In methanol and stirring, the powdery product precipitated out, and after drying, the crude product E was obtained, which was dissolved in 8 mL of dichloromethane, and precipitated with 65 mL of methanol again. After drying at 120° C. for 5 hours and at 80° C. for 10 hours, a fluorine-containing polyi...

Embodiment 3

[0053] (1) Fluorinated polyimide -b- Preparation of Polysiloxane Block Copolymer

[0054] N 2 Under protection, at 25°C, dissolve 0.4484g of 4,4'-diaminodiphenyl ether in 10mL of N,N'-dimethylacetamide to obtain solution A; add 1.1945g of hexafluorodianhydride to solution A; Afterwards, the temperature was raised to 150°C, and the reaction was kept for 2 hours to obtain solution B; 2 / g) was dissolved in 4mL N, N'-dimethylacetamide to obtain solution C. At 150°C, add solution C dropwise to solution B, then add 2mL of toluene, raise the temperature to 180°C, react for 4 hours, and obtain reaction system D; lower the temperature of reaction system D to 25°C, and slowly pour it into 70mL of methanol With stirring, the powdery product precipitated out, and after drying, the crude product E was obtained, which was dissolved in 7 mL of dichloromethane and precipitated again with 50 mL of methanol. After drying at 120° C. for 5 hours and at 80° C. for 10 hours, a fluorine-contain...

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Abstract

The invention discloses modified thermosetting resin and a preparation method thereof. 100 parts of molten state thermosetting resin and 1-20 parts of fluorine-containing-polyimide-b-polysiloxane rigid-flexible segmented copolymer with amino end groups are evenly mixed and undergo a curing and postprocessing process to obtain fluorine-containing-polyimide-b-polysiloxane rigid-flexible segmented copolymer modified thermosetting resin. The modified thermosetting resin has high heat resistance, high toughness, low dielectric constant and good curing manufacturability. The method for preparing the modified thermosetting resin is simple and practical, no solvent is used, and the modified thermosetting resin undergoes large-scale and cleaning production easily.

Description

technical field [0001] The invention relates to a modified thermosetting resin and a preparation method thereof, in particular to a fluorine-containing polyimide-polysiloxane block copolymer modified thermosetting resin and a preparation method thereof. Background technique [0002] The rapid development of electronic information, electrical insulation, new energy, aerospace and other cutting-edge industries has put forward more and higher performance requirements for their common key basic materials - thermosetting resins, which mainly include high heat resistance, Excellent toughness, low dielectric constant and excellent curing process, etc. [0003] In order to meet the requirements of high-performance thermosetting resins, the modification research is generally carried out on the basis of heat-resistant thermosetting resins. "Brittleness" is a prominent problem inherent in thermosetting resins. How to achieve toughness without sacrificing the excellent performance of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08L79/04C08L83/10C08G77/455C08G73/10
CPCC08G73/106C08G77/455C08L79/04C08L79/085C08L2205/02C08L83/10
Inventor 梁国正叶雅仪顾嫒娟袁莉
Owner 太湖华强科技有限公司
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