ChemicalBook > Product Catalog >Catalyst and Auxiliary >polymer >PHENOL-FORMALDEHYDE RESIN

PHENOL-FORMALDEHYDE RESIN

PHENOL-FORMALDEHYDE RESIN Suppliers list
Company Name: Hebei Mojin Biotechnology Co., Ltd
Tel: +8613288715578
Email: sales@hbmojin.com
Products Intro: Product Name:PHENOL-FORMALDEHYDE RESIN
CAS:9003-35-4
Purity:99% Package:25KG
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: +86-0371-55170693 +86-19937530512
Email: info@tianfuchem.com
Products Intro: Product Name:Phenol-formaldehyde resin
CAS:9003-35-4
Purity:99% Package:25KG;5KG;1KG
Company Name: Hefei TNJ Chemical Industry Co.,Ltd.
Tel: +86-0551-65418679 +86-18949832763
Email: info@tnjchem.com
Products Intro: Product Name:PHENOL-FORMALDEHYDE RESIN
CAS:9003-35-4
Purity:- Package:1ASSAYS;1USD
Company Name: Chemson Industrial (Shanghai) Co., Ltd.
Tel: 86-21-65208861- 8007
Email: sales1@chemson.com.cn
Products Intro: Product Name:PHENOL-FORMALDEHYDE RESIN
CAS:9003-35-4
Purity:99.50% Package:25kg
Company Name: Hubei Jusheng Technology Co.,Ltd.
Tel: 18871490254
Email: linda@hubeijusheng.com
Products Intro: Product Name:Phenol-formaldehyde resin
CAS:9003-35-4
Purity:99% Package:5KG;1KG

PHENOL-FORMALDEHYDE RESIN manufacturers

PHENOL-FORMALDEHYDE RESIN Basic information
Product Name:PHENOL-FORMALDEHYDE RESIN
Synonyms:Phenolic moulding powder R131;Phenolic monlding powder,antiwear;Phenolic plastic powder A105;Phenolic resin 212;Phenolic moulding plastics PF2A4-161;Phenolic resin,thermoplastic,high softening point;Phenolic resin FFD-381-P;Phenolic resin,dimethylbenzene modified
CAS:9003-35-4
MF:C7H6O2
MW:122.12134
EINECS:500-005-2
Product Categories:Polymers
Mol File:9003-35-4.mol
PHENOL-FORMALDEHYDE RESIN Structure
PHENOL-FORMALDEHYDE RESIN Chemical Properties
Melting point 94 °C
Boiling point 229.3℃[at 101 325 Pa]
density 1.10 g/cm3
vapor pressure 3.18Pa at 25℃
storage temp. Sealed in dry,Room Temperature
Water Solubility 1.557mg/L at 25℃
Dielectric constant4.5(Ambient)
Stability:Stable. Incompatible with strong oxidizing agents.
LogP3.564 at 25℃
EPA Substance Registry SystemFormaldehyde phenol polymer (9003-35-4)
Safety Information
MSDS Information
PHENOL-FORMALDEHYDE RESIN Usage And Synthesis
Chemical PropertiesThe phenolic resins most widely used are low molecular weight butylated resols, which contain phenolic hydroxyl groups and etherified and unetherified methylol groups. The epoxy resins used have a molecular weight of 3000-4000 and therefore contain secondary hydroxyl groups.
UsesPhenol-formaldehyde resin is used in binders, adhesives, laminates, impregnation products, surface coatings, casting sand, etc.
PreparationPhenol-formaldehyde resin is prepared as follows:
C6H5OH+H2C=O ---> [-C6H2(OH)CH2-]n
One-Stage Resins. The ratio of formaldehyde to phenol is high enough to allow the thermosetting process to take place without the addition of other sources of cross-links.
Two-Stage Resins. The ratio of formaldehyde to phenol is low enough to prevent the thermosetting reaction from occurring during manufacture of the resin. At this point the resin is termed novolac resin. Subsequently, hexamethylenetetramine is incorporated into the material to act as a source of chemical cross-links during the molding operation (and conversion to the thermoset or cured state).
Flammability and ExplosibilityNot classified
Industrial usesPhenol-formaldehyde resin is a synthetic resin, commonly known as phenolic, made by the reaction of phenol and formaldehyde, and employed as a molding material for the making of mechanical and electrical parts. The resins are also used for laminating, coatings, and casting resins.
Phenolic resins are used most extensively as thermosetting plastic materials, as there are only a few uses as thermoplastics. The polymer is composed of carbon, hydrogen, oxygen, and sometimes nitrogen. Its molecular weight varies from a very low value during its early state of formation to almost infinity in its final state of cure. The chemical configuration, in the thermoset state, is usually represented by a threedimensional network in which the phenolic nuclei are linked by methylene groups. The completely cross-linked network requires three methylene groups to two phenolic groups. A lesser degree of cross-linking is attainable either by varying the proportions of the ingredients or by blocking some of the reactive positions of the phenolic nucleus by other groups, such as methyl, butyl, etc. Reactivity can be enhanced by increasing the hydroxyl groups on the phenolic nuclei, for example, by the use of resorcinol.
The outstanding characteristics of phenolics are good electrical properties, very rigid set, good tensile strength, excellent heat resistance, good rigidity at elevated temperature, good aging properties; also, good resistance to water, organic solvents, weak bases, and weak acids. All these characteristics are coupled with relatively low cost.
Industrial usesPhenolic resins are used for low-cost partsrequiring good electrical insulating properties,heat resistance, or chemical resistance. Theaverage shelf life of this resin is about 1 monthat 21.1°C. This can be extended by storing it ina refrigerator at 1.6 to 10°C. Varying the catalyst(according to the thickness of the cast) andraising the cure temperature to 93°C will alterthe cure time from as long as 8 h to as short as15 min.
Some shrinkage occurs in the finished casting(0.012 to 0.6 mm/mm), depending on thequantity of filler, amount of catalyst, and therate of cure. Faster cure cycles produce a higherrate of shrinkage. Since the cure cycle can beaccelerated, phenolics are used in short-runcasting operations.
Cast phenolic parts are easily removed fromthe mold if the parting agents recommended bythe supplier are used. Posteuring improves thebasic properties of the finished casting.
Tag:PHENOL-FORMALDEHYDE RESIN(9003-35-4) Related Product Information
Phenolic epoxy resin Urea formaldehyde sulfonated phenolic resin Furfuryl alcohol, phenol, formaldehyde resin oxyalkylated nonyl phenolic resin Butanol modified phenolic resin Melamine Paraformaldehyde p-tert-Octylphenol, phenol, formaldehyde resin Aluminium powder phenolic resin enamel Anticorrosive phenolic resin powder coating Rosin modified phenol-formaldehyde resin,tung oil,glycerin,phthalic anhydride resin phenolic resin adhesive 2123 Phenolic resin varnish A-stage phenolic resin phenolic resin anodic electrophoretic paint (II) sulfonated ligno-sulfomethylated phenolic resin copolymer Polyterpene phenolic resin Phenolic Resins