QHA-A25B Product Data Sheet

1. Description

QHA-A25B is a liquid tertiary amine catalyst formulated as a 25% triethylenediamine (TEDA) solution dissolved in 1,4-butanediol solvent. As a high-efficiency urethane catalyst, it primarily accelerates the gelation reaction between isocyanates and polyols in polyurethane (PU) systems, while providing moderate catalytic activity for the blowing reaction (isocyanate-water interaction).

This product features excellent solubility, uniform dispersibility, and stable catalytic performance, eliminating the handling challenges of solid TEDA crystals. It delivers balanced reactivity, precise curing control, and consistent foam/molding quality, making it a versatile choice for industrial PU manufacturing. Its liquid form enables accurate metering and seamless integration into automated production lines.

2. Specification

The following table lists the typical physical and chemical properties of QHA-A25B, complying with standard industrial quality specifications:

3. Application

QHA-A25B is engineered for a wide range of polyurethane formulations, with core applications focused on high-performance molding and foam production:

• Microcellular PU Shoe Soles: The primary application, ideal for direct injection molding of casual, sports, and safety shoe soles; enhances crosslink density, mechanical strength, and wear resistance while ensuring fast demolding.
• Flexible PU Foams: Suitable for slabstock foams (mattresses, furniture cushions) and molded flexible foams (automotive seats, interior trim); regulates gel time and foam rise stability for uniform cell structure.
• Semi-Rigid & Integral Skin Foams: Applied in automotive interior components, steering wheels, and household appliance parts; improves surface finish and dimensional stability.
• PU Elastomers & Coatings: Used in high-performance elastomer products and protective coatings; accelerates curing without compromising flexibility and adhesion.
• It is compatible with most PU raw materials (polyether polyols, polyester polyols, isocyanates) and can be used alone or blended with other amine/tin catalysts to optimize reaction balance.

4. Storage & Handling

Storage Conditions

• Store in sealed, original containers in a dry, well-ventilated, and cool warehouse; avoid direct sunlight and heat sources.
• Recommended storage temperature: 5–30°C; prevent freezing (low temperatures may cause component separation, which can be restored by gentle heating and mixing).
• Keep away from strong acids, oxidizing agents, and moisture to avoid product degradation and performance loss.
• Storage area should be equipped with leak-proof facilities and comply with local chemical storage regulations.

Shelf Life & Handling Tips

• Unopened shelf life: 12 months under recommended storage conditions; perform performance testing before use if expired.
• Reseal containers immediately after use to minimize contact with air and moisture.
• Use appropriate personal protective equipment (gloves, goggles) during handling; avoid skin and eye contact. In case of contact, rinse with plenty of water and seek medical attention if needed.

The information provided is based on current knowledge and experience. Shijiazhuang Qihong  New Material Technology Co.,Ltd does not accept liability for improper use or storage of the product. Users are recommended to conduct preliminary tests to confirm suitability for specific processes.