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ACS new superplasticizer (1) - Its Synthesis and cement particles in the adsorption
6, relative viscosity of the ACS two dosage effect on adsorption ■ ng. 6Effect0fdosage0fACSwithdifferent ∞ theirquantitycenletltpI Xiu 2.3 Superplasticizer on electrokinetic properties of colloidal systems of ring 7 are added and not added superplasticizer in cement paste ≮ a potential surface of cement particles. ≮ system can be seen as a potential mobile nature of the composite indicators. Plant u] 『l\Page】 No. 5 Kouxiao Kang, et al: Treatment of Naphthalene Adsorption and two former students of cyanide wastewater fluorobenzene 61 weeks 7-dichloro-fluoro resin adsorption desorption solution UV absorption spectra of weeks (diluted 1o0 times) at the amount of .7 UVabs squirt duga f ~. reofett. ~ mto0 song 1did ~ oro-fluovobenze ~ 2) test solution acidity on the dichloro fluorobenzene two absorption peak position and intensity of great impact, because trials do not ensure the strict standard solution and sample solution acidity consistent, taking into account the water flow through the resin bed after the resin of ancient water, water can be part of the change in the internal acidity of the effluent, which Figure 6 and Figure 7 both the location and intensity of absorption peaks have some differences. However, as in the 225 ~ 250mn high absorption peaks less affected by the test solution acidity, so when used as a quantitative calculation of the absorption peaks are selected. 3) wastewater by adsorption (velocity 1BV / h), the adsorption removal of dichloro fluorobenzene 70%, which is consistent with the results visible spectrophotometric analysis. 4) methanol-dichloro fluorobenzene adsorbed by the resin desorption efficiency of 99%. 3 Conclusion 1) XDA-type resin can be quantitatively adsorbed naproxen production wastewater recycling naproxen, but also can absorb wastewater recycling dichloro fluorobenzene about 70% of the dichloro fluorobenzene; 2) resin adsorption of the two wastewater were carried out at room temperature, without changing the acid waste water quality, flow rate, respectively control ≤ 4BV / h and 1BV / h. References: [1] Wang Huai-three, Liu Yuxin,air jordan shoes cheap, Shi Zhiquan,ugg milano, et al. with a new resin to remove and recover coal cry of phenol [J] of Chengdu University of Science. 1982,air jordans, (4) :75-82 [2: Dan Zhiquan, Wang Huai three resin wastewater treatment gas and coke [P. invention patents,ed hardy clothing, ZL881058629, authorized at 1994.5. (edit Huang Xiaochuan) f 57 are connected to other Page】 The figure shows, do not add water reducer with cement particles surface positive charge of about + i0mV, and add Ⅱ) N and the ACS system in a potential of cement particles surface ℃ were about a 21mV and a l5mv, absolute increase in self-Ⅱ, adding that the cement water reducing agent system to increase the electrostatic repulsion between particles. Compared with Figure 2, found in the saturation dosage, the adsorption quantity, ℃ absolute value of a potential is also high. The reason is that the cement initial positively charged particle surface hydration products of superplasticizer molecules on the negatively charged groups adsorbed strongly, leading to a potential of particles from the surface ℃ positive to negative. F1) N negatively charged groups more than in the surface of cement particles adsorption of larger, and therefore a potential absolute value of its ℃ higher. ACS molecule negatively charged relatively small number of polar groups, the adsorption potential of the cement particle surface ℃ for a relatively low absolute value. both in the adsorption and the rubber surface (a potential difference between the various properties on the system will inevitably have an impact, have an effect on the mechanism of the cement particles are not the same. 3 Conclusions 1) by acrylic acid, methacrylic acid esters of polyethylene glycol and other vinyl monomer polymerization was prepared by the dispersion of cement particles well, have some stabilizing effect on dispersion copolymerization of acrylic acid type superplasticizer (ACS). 2) ACS molecules in the cement particles After adsorption, the adsorption amount of the limit 1.97rTg,ugg prezzo, the surface of cement particles a potential of about one l5mVo References: 1] Chen Jiankui. The principle and application of concrete admixtures: M]. Beijing: China Planning Press, 1997. [ ,],[,1987,337-339. [4 Zhangguan Lun, Yun Li. concrete admixtures [M】. Shanghai: Shanghai Science and Technology Literature Press, 1985. [5] Feng Naiqian. High Performance Concrete [M] Beijing: China Building Industry Press .1995 . f edit Huang Xiaochuan)
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