What is the Colour of phenol formaldehyde resin?
Phenolic Resin for Ink Chemical Classification: Phenol Formaldehyde Resin(Novolac) Colour: Pale Amber.
What is the another name of phenol formaldehyde resin?
Phenol formaldehyde resins (PF) or phenolic resins (also infrequently called phenoplasts) are synthetic polymers obtained by the reaction of phenol or substituted phenol with formaldehyde. Used as the basis for Bakelite, PFs were the first commercial synthetic resins (plastics).
What are the properties of phenol formaldehyde resin?
Properties of Phenolic Resins In addition, phenol formaldehyde resin properties include good thermal insulation, low density and excellent durability. They are easy to mold into a variety of shapes and complex contours, making them adaptable to custom equipment or environments.
What is the formula of phenol formaldehyde?
|Chemical Safety||Laboratory Chemical Safety Summary (LCSS) Datasheet|
|Synonyms||Phenol-formaldehyde resin Phenolic resin Phenol, polymer with formaldehyde Formaldehyde phenol polymer Formaldehyde, phenol polymer More…|
How much time is taken for the formation of phenol formaldehyde?
The synthesis time was observed for 240 min; changes in physical structure and viscosity of the PF resins were noted. It was observed that the viscosity values of the PF resins prepared were directly proportional to the synthesis temperature and the formaldehyde content.
What can phenol-formaldehyde resins be used for?
One of its important applications is as an adhesive for wood-based panels manufacturing. In this research work, modified phenol-formaldehyde resins were prepared using hydroxymethylated alkaline rice straw lignin as a substitute for petroleum-based phenol in the range of 20 to 50% by weight.
How is FTIR used to study Resol phenol resin?
The paper presents the results of the structural type studies of resol phenolic resin used for the preparation of moulding and core sands exposed to the air. The FTIR study was carried out using a transmittance technique.
Where are the lignins used in phenolic resins?
Some of the lignins that have been used in phenolic resins are derived from annual plants such as flax (Tejado et al. 2007, 2008), or kenaf (Yan2009), and agricultural waste such as sugar cane bagasse and wheat straw (Hoareau et al. 2006; Ghorbani et al. 2016; Tachon et al. 2016).