Short Description:


Product Detail

Product Tags

Related Video

Feedback (2)

Persisting in High high quality, Prompt Delivery, Aggressive Price, we've established long-term cooperation with clients from the two overseas and domestically and get new and old clients' superior comments for Cas 110-54-3 Trading , Butanone Production Companies , Cas 25038-59-9 Trading , Our products are new and old customers consistent recognition and trust. We welcome new and old customers to contact us for future business relations, common development. Let's speeding in the dark!
Cas 79-10-7 Manufactor Phenol Formaldehyde 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

phenolic resin

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.


Product detail pictures:

Cas 79-10-7 Manufactor Phenol Formaldehyde Resin CAS 9003-35-4 High Quality And Low Price – Chemwin detail pictures


Related Product Guide:

We'll make every effort and hard work to be superb and excellent, and speed up our steps for standing inside the rank of intercontinental top-grade and high-tech enterprises for Cas 79-10-7 Manufactor Phenol Formaldehyde Resin CAS 9003-35-4 High Quality And Low Price – Chemwin , The product will supply to all over the world, such as: Peru, Slovenia, Austria, Look forward to the future, we will focus more on the brand building and promotion . And in the process of our brand global strategic layout we welcome more and more partners join us, work together with us based on mutual benefit. Let's develop market by fully utilizing our comprehensive advantages and strive for building.
  • The customer service staff's attitude is very sincere and the reply is timely and very detailed, this is very helpful for our deal,thank you.
    5 Stars By Denise from Austria - 2018.11.04 10:32
    This company has a lot of ready-made options to choose and also could custom new program according to our demand, which is very nice to meet our needs.
    5 Stars By Genevieve from Bahrain - 2018.08.12 12:27
    Write your message here and send it to us