Tianjin Langxing: Providing high-precision dynamic mixing solutions for the chemical industry
The trend towards refinement and functionalization in the chemical industry has raised higher process requirements for controlling polymerization reaction processes, online injection of additives, and uniform dispersion of colorants/pigments. Traditional stirred tanks suffer from mixing dead zones, local concentration gradients, and batch fluctuations in high viscosity reaction systems, which directly affect the molecular weight distribution, performance consistency, and production efficiency of products. Tianjin Langxing NDM series dynamic mixer provides chemical industry customers with a full process mixing solution from polymerization reaction to back-end conditioning, with high shear of fixed rotor, millisecond level homogenization, and industrial grade continuous operation capability.
Dynamic mixer: precise control of polymerization reaction and chain extension process
The polymerization reaction and chain extension reaction are highly sensitive to the concentration field, temperature field, and residence time distribution inside the reactor. Once local concentration or dead zone occurs, it will lead to broadening of molecular weight distribution, generation of gel particles, and even explosive polymerization. The NDM series dynamic mixer enhances reaction stability and product consistency from the source through high shear forced homogenization
In the inlet or circulation loop of the polymerization reactor, high-intensity instantaneous mixing of monomers/catalysts/chain transfer agents is achieved, significantly narrowing the molecular weight distribution (PDI) and directly improving product performance
In the chain extension reactions of spandex, TPU, PA, PU, etc., high shear homogenization can enhance the contact efficiency between the chain extender and the end group, improve the reaction conversion rate, and reduce the amount of chain extender used
The millisecond level homogenization process significantly shortens mixing time, suppresses side reactions, improves unit time productivity, and is suitable for continuous polymerization (CTA/CSTR/loop) processes
Variable frequency speed regulation+modular fixed rotor, which can flexibly match shear strength for different viscosity systems (500-50000 cP), achieving flexible production of multiple varieties in one device
Typical applications:
Polyester/polyamide chain extender: online injection and homogenization of chain extenders for PET, PBT, PA
Polyurethane synthesis: high-strength reaction mixing of isocyanates and polyols, stabilizing the molecular weight of prepolymers
Lotion polymerization: instantaneous mixing of emulsifier/initiator at reactor inlet, particle size CV<5%
Polymer alloys/blends: homogenization of the melt before reactive extrusion to improve the uniformity of phase dispersion
Dynamic mixer: online precise injection of additives and colorants
In downstream products such as polymer modification, coatings, inks, adhesives, etc., the online injection and uniform dispersion of additives (antioxidants, UV absorbers, flame retardants, toughening agents, antistatic agents, compatibilizers, etc.) and colorants (pigments, dyes, functional fillers) are the key factors determining the appearance, mechanical properties, and batch consistency of the final product. The NDM series provides professional solutions for high viscosity, low addition, and easy agglomeration systems
Online injection of trace additives: precise proportional control (± 0.5%) to avoid local enrichment and agglomeration under traditional stirring
Strong dispersion of colorants/pigments: high shear directly breaks pigment aggregates, resulting in uniform color, no color difference, no coagulation, and no visible particles
Continuous process: Suitable for online batching reaction devolatilization extrusion integrated production line, supporting 24/7H continuous operation, with a comprehensive availability rate of ≥ 98%
Industrial grade sealing and materials: solvent resistant, acid and alkali resistant, overcurrent components can be selected from Hastelloy/ceramic/tungsten carbide, suitable for strong corrosion and high-purity processes
Typical applications:
Polymer additive addition: antioxidant/light stabilizer/flame retardant online injection and homogenization
Preparation and color matching of colorants: high-strength pre dispersion and online color matching of pigments/dyes/functional fillers
Adhesive/sealant: continuous online mixing of thickening agents, toughening agents, and fillers
Catalyst slurry: Preparation and online addition of high concentration slurry of precious metal/solid acid catalyst
Special chemicals: precise injection of trace functional additives such as compatibilizers, coupling agents, chain extenders, etc
Tianjin Langxing adheres to the delivery standard of process value, and uses its independently developed NDM series dynamic mixer to serve key processes in the chemical industry such as polymerization reaction, chain expansion, additive injection, and color paste dispersion, helping customers improve product performance consistency, reduce unit energy consumption, and support continuous and flexible production. Looking forward to building a more efficient and stable high-end chemical manufacturing system with you.