Phenolic epoxy resin is a kind of low molecular weight synthetic resin with moderate viscosity, high temperature resistance, good adhesion, adhesive, anti-corrosion, casting, mechanical and other properties, which is widely used in composite materials, UV curable solder resist ink, temperature resistant vinyl resin and coatings; Phenolic epoxy resin not only has the characteristics of high heat resistance and corrosion resistance of phenolic resin, but also has the characteristics of good adhesion of epoxy resin, good mechanical and physical properties, and good electrical insulation performance. It can be used in coatings and adhesives that need to improve the heat resistance grade or corrosion resistance.
Composition of chemical water treatment system Resin lens is a kind of optical lens made of resin Raw water → clarifier → anthracite quartz → weak cation → strong cation → decarburizer → anion double-layer bed → boiler sand filter exchanger Furnace mixing → supplement: ammonia process condensate → stripper → cooler → cyanide cotton iron remover → cation exchanger → cooling bed charging → water: turbine And urea condensate → cyano fiber cotton iron remover → chemical water treatment system of chemical fertilizer combined workshop consists of the following five parts: 1. pretreatment system. The raw water from the second oil refining source is added with 40% concentration FeCl3 solution in the clarifier T9202 for flocculation clarification, and further filtered by anthracite quartz sand filter JF9201. The effluent turbidity is 0.5mg/L. 2 The filtered raw water passes through weak cation exchanger D9208, strong cation exchanger D9207, decarburizer D9206 and anion double-layer bed D9205 for ion exchange to remove most cations and anions, and the outlet point conductivity is ≤ 5 μ S/cm, SiO2≤100μg/L. 3、 Condensate recovery system: ammonia containing process condensate goes through stripping, cooling and iron remover JF9208, and then goes into cation exchanger D9214 for ion exchange to remove NH+4, The outlet water conductivity is ≤ 20 μ S/cm. The turbine and urea condensate in the whole workshop are combined into a condensate tank and then enter the cyanide fiber cotton iron remover JF9207 for iron removal. The ammonia containing process condensate is cooled by the heat exchanger together with the turbine and urea condensate 4. The secondary desalting system, desalted water, ammonia containing process condensate, turbine and urea condensate are further refined by the mixed bed ion exchanger D9204 and used as boiler make-up water. The outlet water conductivity is ≤ 0.4 μ S/cm, SiO2≤20μg/L. 5、 Regeneration system. After the anion exchange resin and cation exchange resin fail, they are respectively regenerated with NaOH solution and H2SO4 solution of certain concentration. The weak cation exchange resin is regenerated with the regeneration waste liquid of strong cation exchange resin
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