High-Tg Bismaleimide Resin Manufactured By Yangchen Tech

In the high-performance polymers, bismaleimide resin (BMI) stands out for its exceptional thermal stability, mechanical strength, and electrical properties. Yangchen Technology specializes in BMI (CAS: 13676-54-5) with a focus on one key performance metric: glass transition temperature (Tg). Our BMI resins boast Tg values ​​exceeding 340°C, and custom formulations can reach temperatures exceeding 400°C.

Why the Tg of Bismaleimide Resin is Important?

The glass transition temperature (Tg) is the point at which a polymer transitions from a hard solid to a softer, rubbery state. For applications in the aerospace, electronics, and automotive industries, a high Tg ensures:

• Dimensional stability under thermal stress.
• Mechanical properties (e.g., strength, modulus) maintained at elevated temperatures.
• Resistance to deformation during sustained high-temperature operation.

Standard epoxy resins typically have Tg values ​​below 200°C, limiting their use in high-end applications. In contrast, our BMI resins achieve Tg values ​​as high as 400°C through molecular design and compounding. For example, our N,N'-4,4'-diphenylmethane bismaleimide (CAS: 13676-54-5) exhibits a Tg of 340°C after curing for 10 hours at 280°C.

Technical Indicators

Key Advantages of Our High-Tg BMI Resins

1. Excellent Thermal Performance

Tg range: 250°C to >400°C, customizable upon request.

Thermal decomposition temperature (Td) as high as 500°C.

Low coefficient of thermal expansion (CTU: 36–40 ppm/°C), minimizing warping and cracking.

2. Enhanced Processability

Low melt viscosity (e.g., 474–51 mPa·s in the 148–180°C range) allows for easy molding, impregnation, or coating.

Wide processing window for composites, adhesives, and encapsulation materials.

3. Excellent Mechanical and Electrical Properties

High storage modulus (e.g., below 3.2 GPa at Tg), ideal for structural components.

Excellent dielectric properties, suitable for electronic insulation.

Practical Applications of High-Tg BMI Resins

Our resins are designed for the following industries, where failure is unacceptable:

Aerospace: Composite matrices for engine components, nose covers, and fuselage structures.

Electronics: Integrated circuit substrates, high-frequency circuit boards, and insulation coatings.

Industrial: High-temperature adhesives, wear-resistant materials, and protective coatings.

Yangchen Technology's Solutions: Tailoring Tg to Your Needs

We understand that different applications have varying Tg requirements. Here's how we provide customized solutions:

1. Formulation Optimization

By adjusting monomer ratios (e.g., DDM-BMI/EBA-BMI blends), we precisely control crosslink density, thereby increasing Tg without compromising processing performance.

2. Cure Optimization Guidance

We provide technical support on curing parameters (time/temperature) to maximize Tg. For example, post-curing at 280°C can increase Tg by 10-15%.

3. Compliance with Industry Standards

Our BMI resins meet stringent thermal stability and safety specifications, ensuring reliability in critical applications.

Bismaleimide  series products manufactured by Yangchen Tech

Partner with Yangchen Technology for superior BMI resins

At Yangchen Technology, we combine over 20 years of high-performance polymer expertise with a customer-centric approach. Whether you require a BMI resin with a Tg of 300°C or >400°C, we offer:

• Sample testing to verify performance in your application.
• End-to-end support from formulation to manufacturing.

For more details, please visit our website or contact Yangchen Technology's technical team.