Polyimide resin composition and molded article
The polyimide resin composition formed by mixing a specific ratio of polyimide resin and a polyetherimide sulfone resin to solve the shortcomings of the thermoplastic polyimide resin in terms of tensile characteristics, and achieves higher toughness and impact resistance.
CN114867788BActive Publication Date: 2025-03-18MITSUBISHI GAS CHEM CO INC
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Patent Information
- Application Number
- CN202080089536.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2019-12-23
- Filing Date
- 2020-11-30
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2040-11-30
AI Technical Summary
Technical Problem
The tensile properties of existing thermoplastic polyimide resins, especially toughness, still have room for improvement, affecting their impact resistance and vibration control.
Method used
The polyimide resin composition is formed by mixing a combination of polyimide resin and a polyetherimide sulfone resin in a specific ratio, wherein the polyimide resin contains a specific repeating structural unit and the polyetherimide sulfone resin has a high glass transition temperature.
Benefits of technology
While maintaining heat resistance and bending characteristics, the composition significantly improves the tensile modulus and tensile fracture strain, and enhances the toughness and impact resistance of the molded body.
✦ Generated by Eureka AI based on patent content.
Abstract
A polyimide resin composition and a molded article comprising the same, wherein the polyimide resin composition comprises a polyimide resin (A) and a polyetherimide sulfone resin (B), wherein the polyimide resin (A) comprises a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), and the content ratio of the repeating structural unit of the formula (1) is 20 to 70 mol% relative to the total of the repeating structural unit of the formula (1) and the repeating structural unit of the formula (2). (R1 is a divalent group having 6 to 22 carbon atoms and containing at least one alicyclic hydrocarbon structure. R2 is a divalent chain aliphatic group having 5 to 16 carbon atoms. X1 and X2 are each independently a tetravalent group having 6 to 22 carbon atoms and containing at least one aromatic ring.)
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