Polyether application of defoaming agent in papermaking industry-Iota

Products

News

Office Address:	Sunmoon Science Park, 985 Xingzhong Road, High-Tech Zone, Bengbu, China
Factory Address:	Mohekou Industrial Park, Huaishang District, Bengbu, Anhui, China
Contact:	Nathan Zhang
Phone:	0086-552-19805521900
FAX:	0086-552-3822922
Mobile:	19805521900/18119733779
WebSite:	www.siliconeoil.cn www.siliconeoil.net
Email:
QQ:	729118868

Service > Polyether application of defoaming agent in papermaking industry

Polyether application of defoaming agent in papermaking industry

Polyether defoamer of polyether. The main active agent is ethylene oxide propylene oxide block copolymer, the molecular weight is generally greater than 3000. In 1954, thefirst to put into operation by the America defoaming agent Wagndott, then obtained the rapid development. Especially in the 60's of 20th century, western countries basicallycompleted the transformation of ethylene oxide, propylene oxide synthesis route of raw materials, to provide a lot of cheap raw materials for the production of ethylene oxide and propylene oxide, greatly promoted the development of polyether industry. Chinapolyether defoamer production began in 1969, first used in fermentation industry. 80 time metaphase, polyether defoaming agent in papermaking industry is put into use, which makes the production of coated paper manufacturers benefit. The performance characteristics of foam agent such cancellation is: non-toxic, easy to use, dispersion,thermal stability and chemical stability, not only has excellent defoaming properties, but also has a stable foam inhibiting capacity (7). Polyether defoaming agent according to the specific environment application system can be made into oil-based or water-based products, at the same time also can become a polyether defoaming stronger compositedefoaming agent and fatty acid amide, organic silicon compound.

Polyether application of defoaming agent in papermaking industry in paper coatingpreparation process, due to pigment, alkali foaming material existence, mechanical stirring introduced air to the microenvironment within the system, increase the interfacialmicro environment, the formation of three-phase foam film, by the combination of solid particles and gas phase, resulting in a white spots on the surface of the paper (2). In order to eliminate the white spot, and even paper, paper white and smooth, uniform andfirm coating printing pattern delicate and clear, in coated paper production process mustadd the right amount of defoaming agent. Coated paper pulp defoaming agent anddefoaming agent is different, the latter adding defoaming agent in the washing process isseparated from the pulp, while the former is retained in the paper, a great impact on thequality of the paper. Coated paper in the technical requirements: join any papermaking additives on the coating adhesion, dispersion and printing adaptability without any side effects, and high quality of additives can improve the paper gloss, picking speed andlubrication performance. In fact, coated paper, defoaming agent and has multiple functions of fire are global, defoaming, glazing, lubrication. Coated paper defoamersvariety, different coating formulations must be combined with different defoaming agent.For example, as a kind of coated paper coated paper production of ordinary, thedefoaming agent commodity type is NOPCO, SN and FBX and other brands. However, at home and abroad. The main active component of paper coating agent general forpolyether polyether, because the defoaming, defoaming function is very strong, verysuitable for coating preparation process. As everyone knows, the scope of application ofdefoamer of polyether. Very wide, it is not only indispensable additives in papermaking industry, but also has important applications in textile, daily chemical, oil, food, rubber and other industries.