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PHENOL-FORMALDEHYDE RESIN

Product Name
PHENOL-FORMALDEHYDE RESIN
CAS No.
9003-35-4
Chemical Name
PHENOL-FORMALDEHYDE RESIN
Synonyms
RESOLE;Novolac;P-F-R-2;Phenolpac;PF resins;dehyde resin;Phenolic resin;Phenolic resins;PHENOL-FORMRESIN;Resins, phenolic
CBNumber
CB8274689
Molecular Formula
C7H6O2
Formula Weight
122.12134
MOL File
9003-35-4.mol
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PHENOL-FORMALDEHYDE RESIN Property

Melting point:
94 °C
Density 
1.10 g/cm3
Stability:
Stable. Incompatible with strong oxidizing agents.
EPA Substance Registry System
Formaldehyde phenol polymer (9003-35-4)
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Hazard and Precautionary Statements (GHS)

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PHENOL-FORMALDEHYDE RESIN Chemical Properties,Usage,Production

Uses

Phenol-formaldehyde resin is used in binders, adhesives, laminates, impregnation products, surface coatings, casting sand, etc.

Preparation

Phenol-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).

Industrial uses

Phenolic 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.

Industrial uses

Phenol-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.

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PHENOL-FORMALDEHYDE RESIN Suppliers

Shandong Yonghui New Material Co. LTD
Tel
0533-8796697-
Email
13853372908@139.com
Country
China
ProdList
1
Advantage
58
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
21-61259100-
Fax
86-21-61259102
Email
sh@meryer.com
Country
China
ProdList
40268
Advantage
62
Chengdu XiYa Chemical Technology Co., Ltd.
Tel
;
Fax
0539-6365991
Email
sale@xiyashiji.com;3007716753@qq.com
Country
China
ProdList
10576
Advantage
57
Aemon Chemical
Tel
0086-755-86198205
Email
acinfo@aemonchem.com
Country
China
ProdList
1945
Advantage
57
Chengdu Ai Keda Chemical Technology Co., Ltd.
Tel
028-85911938-
Fax
028-86757656
Email
800078821@qq.com
Country
China
ProdList
9753
Advantage
55
Shanghai T&W Pharmaceutical Co., Ltd.
Tel
+86 21 61551611
Fax
+86 21 50676805
Email
contact@trustwe.com
Country
China
ProdList
9915
Advantage
58
Cheng Du Micxy Chemical Co.,Ltd
Tel
028-85632863-
Fax
028-85632863
Email
sales@micxy.com;
Country
China
ProdList
13070
Advantage
58
The future of Shanghai Industrial Co., Ltd.
Tel
021-61552785
Fax
021-55660885
Email
sales@shshiji.com
Country
China
ProdList
9543
Advantage
55
Jiaxing Trustworthy Import And Export Co., Ltd.
Tel
+86 (573) 8203-0555
Email
jessica@chinatrustworthy.com
Country
China
ProdList
38
Advantage
56
Zouping Mingxing Chemical Co.,Ltd.
Tel
13605431940
Fax
0086-0543-2240079
Email
zpmxchemical@126.com
Country
China
ProdList
2274
Advantage
62
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View Lastest Price from PHENOL-FORMALDEHYDE RESIN manufacturers

Shaanxi Dideu Medichem Co. Ltd
Product
PHENOL-FORMALDEHYDE RESIN 9003-35-4
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20T
Release date
2020-04-23
Shaanxi Dideu Medichem Co. Ltd
Product
Phenolic resin 2123 Phenolic resin 2123
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20T
Release date
2020-04-22
Career Henan Chemical Co
Product
PHENOL-FORMALDEHYDE RESIN 9003-35-4
Price
US $1.00/g
Min. Order
100g
Purity
99%
Supply Ability
G/KG/T
Release date
2019-12-18

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