Related presentations of Poly (ether ester) Defoamer

Poly(ether ester) Defoamer in products is one of the most important varieties, no poison, no smell, no stimulation and features such as easy to disperse in the water, in addition to the general industrial applications, can also be used in food and fermentation, cosmetic and pharmaceutical industries, cannot be replaced by Silicon defoamer.Synthesis of Poly(ether ester) Defoamer based on the initiator used can be divided into different polyols, fatty acid ester-ether and amine-type, which is widely used among polyhydric alcohols and fatty acid ester.
Initiator and catalyst to put a certain amount of autoclave, using nitrogen replacement 3 heating mixing, vacuum dehydration at specified temperature up to the pipe cool;At a certain temperature with the epoxide ring opening polymerization by order add a certain amount of ethylene oxide and propylene oxide.Added after the aging 40min, then cooling to 80~C feed out and get Poly(ether ester) Defoamer.
“GPEP” type, polyether, fixed end (total 4%), propylene oxide, change the EO chain length (as a percentage of the total), and to study its anti foam and foam-breaking performance.Ethylene oxide concentration of Poly(ether ester) Defoamer performance greatly in terms of suppressing, ethylene oxide concentration around 4% low foam high, reflecting better anti-foaming.This may is due to starting agent, and molecular volume must of situation, ring oxygen ethane content more low, relative has hate water of ring oxygen propane chain paragraph on more long, elimination bubble agent molecular in sent bubble system in the of dissolved sex on more poor, such will block and reduced gas in sent bubble system in the of dispersed degree, reduced formed bubble of capacity, reflected out good of inhibition bubble sex.