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Shandong Heze Luhua Chemical Co., Ltd.
发布时间:2009/6/15    阅读次数:4470
The July 30th Shandong Heze Luhua Chemical Co., Ltd: China's first large-scale production of poly production line formaldehyde started: at present into the design, manufacturing is to the end of September to enter the equipment commissioning stage...... The device has the advantages of is the production of paraformaldehyde without dust, fluidity, solubility and improve the quality of.

Technical documents: paraformaldehyde (Paraformalclehyde) also known as solid formaldehyde, is a short-chain poly methylene glycol HO (CH2O) nH (type n=8--100) mixture, which also contains a small amount of water and methanol. Paraformaldehyde generally refers to solid formaldehyde products of low polymerization, the poly methylene glycol polymerization degree n=8--10, industrial products often CH2O content is higher than 95% (Wt) powders and the content of CH2O is 91--93% (Wt) granular or powdery products, convenient storage and transportation. This product has a strong smell of formaldehyde, degree of polymerization n as solution temperature 8 - 12 to 80 ℃, the polymerization solution temperature of N in 12 or more for 120 - 170 ℃, insoluble and ethanol, acetone and ethyl ether, soluble in dilute acid and dilute alkali solution, decompose quickly melting, some mechanical properties but does not have the plastic, and can not be processed into thin film. The oligomerization of low polymerization degree of products is not stable polymer, easy to dissolve formaldehyde solution


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