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We usually believe that one's character decides products' high quality, the details decides products' excellent ,with the REALISTIC,EFFICIENT AND INNOVATIVE staff spirit for Polymer Materials , Cas 25037-45-0 , Cas 123-86-4 , Therefore, we can meet different inquiries from different consumers. You should find our web page to check additional info from our products.
Factory Supply Fine Chemical Products - phenolic resin CAS 9003-35-4 High Quality And Low Price – Chemwin Detail:

Product Namephenolic resin

Molecular format:

CAS No.:9003-35-4

Product molecular structure

 

Chemical Properties

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).

 

Application:

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.


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Our company has been focusing on brand strategy. Customers' satisfaction is our best advertising. We also supply OEM service for Factory Supply Fine Chemical Products - phenolic resin CAS 9003-35-4 High Quality And Low Price – Chemwin , The product will supply to all over the world, such as: Casablanca, New York, Ecuador, Till now, the goods list has been updated regularly and attracted clients from around the globe. Detailed facts is often obtained in our web-site and you'll be served with premium quality consultant service by our after-sale group. They are going to help you get comprehensive acknowledge about our products and make a satisfied negotiation. Company go to to our factory in Brazil is also welcome at any time. Hope to obtain your inquiries for any pleased co-operation.
  • It is a very good, very rare business partners, looking forward to the next more perfect cooperation!
    5 Stars By Henry from Paraguay - 2018.11.22 12:28
    The goods we received and the sample sales staff display to us have the same quality, it is really a creditable manufacturer.
    5 Stars By Christopher Mabey from Haiti - 2017.01.28 19:59
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