Short Description:


Product Detail

Product Tags

Related Video

Feedback (2)

Gaining customer satisfaction is our company's aim forever. We will make great efforts to develop new and top-quality products, meet your special requirements and provide you with pre-sale, on-sale and after-sale services for Methyl Isobutyl Ketone , Polyethylene Terephthalate Manufactor , Propanone Dealers , Being a young growing company, we might not the best, but we are trying our best to be your good partner.
Glacial Acetic Acid Trading 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:

Glacial Acetic Acid Trading Phenol Formaldehyde Resin CAS 9003-35-4 High Quality And Low Price – Chemwin detail pictures


Related Product Guide:

We stick to the principle of quality first, service first, continuous improvement and innovation to meet the customers for the management and zero defect, zero complaints as the quality objective. To perfect our service, we provide the products with the good quality at the reasonable price for Glacial Acetic Acid Trading Phenol Formaldehyde Resin CAS 9003-35-4 High Quality And Low Price – Chemwin , The product will supply to all over the world, such as: South Korea, Italy, French, We've been proud to supply our products and solutions to every auto fan all around the world with our flexible, fast efficient services and strictest quality control standard which has always approved and praised by customers.
  • The after-sale warranty service is timely and thoughtful, encounter problems can be resolved very quickly, we feel reliable and secure.
    5 Stars By Roberta from Russia - 2018.03.03 13:09
    The company has a good reputation in this industry, and finally it tured out that choose them is a good choice.
    5 Stars By Jean Ascher from Sudan - 2018.02.12 14:52
    Write your message here and send it to us