The core advantages of modified MDI—“high resilience + easy processing + environmental resistance”
The core advantages of modified MDI are “high resilience + easy processing + environmental resistance.” It is widely used in polyurethane products that require elastic recovery and long-term stability, and is particularly well-suited for the following industries:
Main application areas (focusing on core scenarios with high resilience)
The core advantages of modified MDI are “high resilience + easy processing + environmental resistance.” It is widely used in polyurethane products that require elastic recovery and long-term stability, and is particularly well-suited for the following industries:
1. High-rebound foam field (primary application scenario)
Core requirements: high resilience, low compression set, comfortable feel.
Typical applications:
Civilian foam: sofa cushions, mattresses, and pillows (replacing traditional TDI foam, with a 15%-20% improvement in resilience and resistance to sagging even after prolonged sitting).
Automotive foam: seat foam, headrests, and armrests (designed to meet automotive lightweighting requirements, with a weight reduction of 5%-10% compared to TDI foam, and featuring excellent resistance to high and low temperatures (-40℃~80℃), as well as no odor after prolonged use).
Sports equipment: yoga mats, fitness equipment cushioning pads (with a rebound rate ≥80%, absorbing impact energy and protecting joints).
Key formulation points: Use a polyether polyol (such as PPG-3000), a blowing agent (water + physical blowing agent), and an amine catalyst, with the NCO/OH ratio controlled within the range of 0.9–1.1.
2. Polyurethane elastomer (CPU) field
Core requirements: high resilience, wear resistance, hydrolysis resistance, and strong process adaptability.
Typical applications:
Industrial components: shock-absorbing pads, seals, and rollers (such as high-rebound rollers for conveyor systems with a rebound rate ≥75% and wear resistance superior to that of pure MDI elastomers);
Consumer goods: Midsoles for sports shoes (one of the core raw materials in Boost-type materials—modified MDI reacts with polyether polyols to form microporous elastomers, offering excellent cushioning and rebound performance); wear-resistant outsole layers.
Medical assistive devices: prosthetic joints, wheelchair seat cushions (high-resilience + low compression set-back, conforming to the human body for enhanced wearing comfort).
Key formulation points: The prepolymer method is employed, in which modified MDI reacts with polyether polyols (PTMG/PPG) to form an NCO-terminated prepolymer. This prepolymer is then chain-extended using 1,4-butanediol, allowing the Shore hardness to be adjusted within the range of A30 to A80.
3. Soft Composite Materials and Coatings
Core requirements: Elastic adhesion, weather resistance, and abrasion resistance.
Typical applications:
Textile coatings: elastic fabrics (such as wetsuits and sportswear), carpet backing (high resilience + non-slip, comfortable foot feel);
Leather finishing: Surface coating for artificial leather and synthetic leather (giving softness and elasticity, scratch resistance, and preventing cracking);
Building waterproofing materials: Elastic waterproof coating (high rebound + aging resistance, suitable for accommodating deformation in building expansion joints).
Contact Information
Address: No. 2, Lanhai Road, High-tech Industrial Zone, Yantai City, Shandong Province
Email: wendy.wang@yanchuangpu.com
Email: ella.duan@yanchuangpu.com
LinkedIn: huipuwendy@outlook.com
LinkedIn: elladuan869@gmail.com
