Synthesis, analysis and application of naphthalene
It is an important raw material for the production of sulfonated naphthalene formaldehyde (SNF) and SNF is used for increasing the fluidity of concrete mixtures (Zhang et al., 2025). Continuous
Sulphonated Naphthalene Formaldehyde Condensate
This was achieved by using silica fume and class F fly ash to enhance the early and later day strength and sulfonated naphthalene formaldehyde condensate as superplasticizer to disperse the cement grains effectively (Newman and Owens, 2003). The suction of silica fume into the pores of OPKS enhanced the bond between OPKS and the cement matrix.
Scanning Electron Microscopy of Plasticized Cement Stone
The most widely used superplasticizers are, in particular, based on sulfonated naphthalene formaldehydes (SNF) and polycarboxylate esters (PCE). The principle of operation of the SNF is mainly associated with a decrease in the water-cement ratio due to adsorption on cement clinker (“electrostatic repulsion”).
Polyelectrolyte Effects on the Rheological Properties
SNF is a homopolymer (average molecular weight ;5400 g/mol), with a monomer unit consisting of a naphthalene ring structure with one ionizable sulfonic acid group. This is an ideal representation, because the commercial SNF product likely con-tains some branched chains and closed loops as well as a varying number of sulfonate groups along its
Adsorption of plasticizers – Influence of plasticizer and
composition of the superplasticizer itself 1,2. This paper investigates how the adsorption behaviour of the three superplasticizers sulfonated naphthalene formaldehyde condensate (SNF), lignosulfonate (LS) and polyacrylate (PA) depend upon various cement characteristics and how it affects rheological properties of cementitious
- What is Sulphonated naphthalene formaldehyde?
- Sulphonated naphthalene formaldehyde, also known as naphthalene superplasticizer or SNF superplasticizer, is a high-range water reducing admixture for concrete. It has the advantages of high water reduction rate, neither retardation nor air entrainment, and strong adaptability.
- Who makes Sulphonated naphthalene sulphonate formaldehyde (SNF)?
- As a leading manufacturer & exporter of sodium naphthalene sulfonate formaldehyde (SNF) in China, Kingsun company has been focusing on the research and production of sulphonated naphthalene formaldehyde for many years.
- What is sodium naphthalene sulfonate formaldehyde (SNF/PNS/FND?
- Sodium naphthalene sulfonate formaldehyde (SNF/PNS/FND/NSF), also called naphthalene sulfonate formaldehyde condensate, poly naphthalene sulfonate,sulphonated naphthalene formaldehyde,SNF superplasticizer, is commonly referred to as a superplasticizer for concrete. It is the light brown powder in appearance.
- What is a sulfonated naphthalene based superplasticizer?
- Later, sulfonated formaldehyde-based solutions were created, called, superplasticizers (SP) during the 1970s. SP would lower the w/cm ratio by up to 30%. Superplasticizers developed from sulfonated naphthalene formaldehyde are sub-classified as naphthalene-based superplasticizers (SNF).
- Is sodium naphthalene sulfonate toxic?
- Sodium naphthalene sulfonate is a non-hazardous chemical with many characteristics such as non-toxic, non-irritating and non-radioactive. No corrosion effect on steel reinforcement. SNF powder is suitable for fresh concrete with excessive slump loss over time and poor flowability.
- What are lignosulfonates & naphthalene formaldehyde condensates?
- Lignosulfonates (LS), with a limited water-reduction ability of about 10%, are currently used mainly in formulations to enhance the workability retention in ready-mix applications. Sulfonated naphthalene formaldehyde condensates (PNS), also known as polynaphthalene sulfonates (PNS), have a weak interaction with clay minerals.
