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p> Stereoscan photographs showed that both the inner and outer coating membranes of SAPCUs were formed by different size and shape micro particles of coating materials,which were closely stacked at random. Furthermore,adhesive cemented the particles and filled up the gaps among them,but there were still micro holes,which served as the channels for urea dissolving out,in and between the stacking layers. Method A series of products of SAPCUs with single membrane of SAP or with duplex membranes of modified mineral inside and SAP outside were developed by using different types and different water absorbent rates of SAPs as coating material,and large granule urea and modified mineral coated urea (ZECU and PRCU) as core fertilizers. The structure of fertilizers was studied by Scaning Electronic Microscopy (SEM),and the nutrient release characteristics were studied using water dissolution rate method and soil column leaching method.ResultThe? 24 hours N water dissolution rates of SAPCUs were 18.22%-83.87%,and N accumulated leaching rates in four weeks were 40.91%-65.38%,which decreased by 5.21%-40.68% compared with that of urea under the same experiment conditions.</p><p> Both of water and soil dissolution rates of SAPCUs decreased obviously along with the increase of SAP coating rate. Pot experiment was made to simulate different using methods of Super Absorbent Polymer(SAP),including deep using SAP,shallow using SAP,side part using SAP,all part using SAP and no using SAP(control),to understand the effect on growth and water use efficiency(WUE) of potato(Solanum tuberosum L.) under high and low water condition.The results showed that all SAP treatments enhanced potato plant height,and also accelerated root development under low water condition.Under high and low water conditions,the yields of potato to deep using SAP treatment were 9.4% and 16.6% higher than that of control,and WUE raised 12.82% and 54.73% respectively,and the yields of potato with side part using SAP treatment were 39.4% and 21.5% higher than that of control,and its WUE raised 58.79% and 59.46% respectively.Under low water condition,the yields and WUE of potato with all part using SAP treatment increased 15.4% and 56.76% respectively than that of control. This paper considers the application of Super Absorbent Polymer(SAP) in expansive concrete with different cementitious materials. The advantage of these water-swell-able super absorbent polymers is that they can absorb many times their weight in water with nominal or negligible increase in waste volume or weight.</p><p> Influence of SAP and GP waste in GP-SSC mixtures. This paper presents an experimental study to investigate the influence of super absorbent polymer (SAP) on mechanical, rheological, durability, and microstructural properties of self-compacting concrete using a comparatively new environmental waste known as granite pulver (GP). Factors were water stress in three levels (irrigation in 0.75; 0.50 and 0.25% of field capacity) and super absorbent polymer in five levels (0; 0.75; 0.150; 2.25; 3 g/kg of soil). The objective of present study was to investigate the effect of different rates of super absorbent polymer and levels of water stress on water use efficiency (WUE), yield and some morphological traits of sunflower (cultivar ‘Master’). Growing investments in the development of bio-based super absorbent polymers is likely to act as an opportunity in the future. In the review, the development history of superabsorbent polymers since 1961 is described, and the polymerization methods of superabsorbent polymers and the wide-ranging use of this type of polymers in life are described in detail. For importing countries, the major countries that import from are also given. The report provides market sizing and forecast across five major currencies - USD, EUR GBP, JPY, and AUD. Next to China, Japan holds the major demand for Super Absorbent Polymers (SAP) with a share of more than 30% of the regional market.</p><p> Super absorbent polymer was added in eight leaves stage of sunflower to pots in deepness of roots development. https://ldony.top/0b0 and development from manufacturers in accessories and instrument is expected to raise the segment during the forecast period. The findings strongly suggest that the irrigation period of sunflower cultivation can be increased by application of polymer. In many part of Iran, the reproductive growth stages of sunflower (Helianthus annuus L.) are exposed to water deficit stress. The above mentioned rates of polymer have the best effect to all characteristics of sunflower in all levels of water stress treatment. For stress application, pots were weighted every day and irrigated when soil water received to 0.75; 0.50 and 0.25 of field capacity, respectively. This text summarizes for the preparation craft of clay - super absorbent composite polymer, and the influencing factor of its performance, discuss the water absorbing mechanism of clay - super absorbent composite polymer, put forward some suggestions of its application prospect. Acrylics are extensively used across adhesives, sealants, and super absorbent polymers in building & construction industry. Finally, the latest advances in super-absorbent polymers are pointed out.</p><iframe src="https://www.youtube.com/embed/z5uaVil-Gfs" width="560" height="315" frameborder="0" allowfullscreen></iframe>