中文
Diisopropyl azodicarboxylate (DIAD) is an orange red transparent oily liquid, which is a preferred additive for producing light colored, odorless, and environmentally friendly PVC synthetic leather and flooring materials.
Core technological advantages of the product
1. Low odor, high cleanliness DIAD thermal decomposition products mainly consist of nitrogen, carbon dioxide, and water, with extremely low content of by-products and no irritating organic volatiles. This prevents PVC products from having odor and dyeing problems at the root, meeting the production requirements of high-end environmentally friendly products.
2. Excellent compatibility of the system. As an oil phase additive, it has good compatibility with PVC resin, ortho benzene plasticizers (DINP, DOTP), and conventional organic solvents. It does not layer or precipitate, and can be uniformly dispersed throughout the entire rubber material system, ensuring consistent overall performance of the product.
3. The precise and controllable microporous structure relies on the stable gas production characteristics of thermal decomposition. With the adjustment of formula and processing technology, it can stably generate open or closed pore structures with uniform pore size and regular arrangement, effectively adjusting the softness, rebound, and thermal insulation performance of the control product.
4. The foaming efficiency and stability are outstanding in the conventional PVC processing temperature range of 80-140 ℃. The gas production is large, the gas production curve is smooth, the foaming ratio is stable, and the product difference between batches is small. It is suitable for continuous mass production lines.
Main application areas
1. PVC synthetic leather: suitable for preparing high-end foamed synthetic leather with light weight and high softness, enhancing the tactile and texture of the product.
2. PVC elastic flooring: used as the core material for the cushioning foam layer, optimizing the floor’s cushioning performance, foot feel, and sound insulation effect.
3. Wallpaper and functional coatings: endowing the coating with a soft touch and excellent dimensional stability, possessing good resistance to yellowing and color spots, and extending the service life of the product.
Key points of process usage technology
1. Mixing process: DIAD is a liquid additive. It is recommended to mix it with plasticizers before adding it to the system for stirring, which can further improve dispersion uniformity and shorten mixing time.
2. Temperature control: Strictly follow the processing range of 80-140 ℃ to avoid local short-term overheating and prevent premature decomposition of foaming agents, resulting in uneven foaming and porosity defects.
3. Foaming rate adjustment: If you need to slow down/accelerate the gas production rate, you can use a dedicated foaming regulator instead of relying solely on increasing the processing temperature for adjustment.
Shunxiang Pharmaceutical is a professional research and production enterprise of chemical and pharmaceutical intermediates, deeply cultivating the field of functional auxiliary intermediates, establishing a full process quality control system, and continuously optimizing product formulas and application process solutions. We can provide cost-effective raw material matching, on-site process guidance, and a complete set of professional technical services for PVC artificial leather, flooring, wallpaper and other production enterprises.