碳酸钙
- 名calcium carbonate;limestone
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碳酸钙加热分解,生成氧化钙和二氧化碳。
The thermal decomposition of calcium carbonate produces calcium oxide and carbon dioxide .
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聚合物原位复合纳米碳酸钙增韧PP研究
Study on PP Toughened by In-Situ Polymerized Nano Calcium Carbonate
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N,O-羧甲基壳聚糖体系中纳米碳酸钙的仿生合成
Biomimetic Synthesis of CaCO_3 Nanoparticles in N , O-Carboxymethyl Chitosan Solution
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溶液pH值对碳酸钙结垢的影响
A experimental study of influence of pH on calcium carbonate crystallization fouling
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水分和碳酸钙对土壤Cd形态的影响
Effect of Water and Calcium Carbonate on the Cadmium Forms in Soil
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活性轻质碳酸钙填充发泡PE力学性能研究
Study on Foam PE filled with activated light caco_3
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IR分析显示包膜剂与碳酸钙间以离子键结合;
IR analysis showed that coated agent had attached to calcium carbonate surface by ionic bond .
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碳酸钙和氧化钙脱除煤气中H2S和COS的研究
Removal of H_2S and COS in Coal-gas with CaCO_3 and CaO
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TEM照片显示改性的碳酸钙在环己烷中有更好的分散性能;
The TEM photographs showed that the modified calcium carbonate had better disperse ability in cyclohexane .
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纳米碳酸钙影响UF树脂性能的研究
The effect of nanometer calcium carbonate on properties of UF resin
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碳酸钙分解动力学TGA实验数据的新诠释
A new annotation of TGA test data of CaCO_3 calcining reaction kinetics
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用激光电离TOF质谱研究碳酸钙团簇
Study on CaCO_3 Cluster by Laser Ionization TOF Mass Spectrometry
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PEP填充母料中碳酸钙的选择
The Selection of Calcium Carbonate in PEP Filler Masterbatch
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介绍了在VC悬浮聚合中添加碳酸钙填料和热稳定剂,合成可直接用于加工成型的PVC专用粉料的开发工作。
By adding calcium carbonate filler and thermal stabilizer in the VC polymerization processing , PVC special-use resins ready for processing were synthesis .
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用于RTV硅酮胶的纳米碳酸钙的研制
Preparation and Application of Nano Calcium Carbonate for RTV Silicon Sealant
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研究了丙烯酸烯丙基磺酸钠(AASAS)二元共聚水溶性固体阻垢剂的合成工艺及对碳酸钙的阻垢效果。
Acrylic acid ( AA ) and sodium allyl-sulfonate ( SAS ) have been used to synthesize a solid scale inhibitor .
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使用自行研制的毛细管动态流变仪,研究振动参数对聚丙烯(PP)与碳酸钙(CaCO3)在不同配比时混料流变行为的影响。
Polypropylene filled with CaCO_3 in various amounts was extruded in self-made dynamic capillary rheometer and the effects of vibration parameters on rheological behaviors were studied .
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TG-DTA和FTIR分析结果显示,合成的样品为含PAS的碳酸钙复合物;
Results of TG-DTA and FTIR show that all samples are composites consist of PAS and CaCO_3 crystallites ;
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水化产物生长在碳酸钙颗粒表面,对C3S水化起晶核作用并改善了界面粘结。
The hydrate products grow on the calcium carbonate particles . It acts as a nucleating effect for hydration of C_3S and improves the bond of interface .
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结果:辅料中影响去氢骆驼蓬碱Td的主要因素为吐温-80和碳酸钙用量(P0.05);
RESULTS : The amount of tween-80 and calcium carbonate ( P0.05 ) are the main factors that had influence on the Td .
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碳酸钙对UPVC型材性能的影响
Effect of CaCO_3 on the Properties of UPVC Profile
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如当复合重质碳酸钙粉体填加5~10%时,PP复合材料的断裂伸长率比基体PP还要高,甚至出现拉不断现象,填加量达到20%时仍和基体持平。
Such as when the filling ratio is 5 ~ 10 % , the fracture elongation percent of PP filled by composite GCC was greater than PP matrix .
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在碳酸钙加填纸中AKD施胶的有效性和逆转性
Efficiency and Reversion of Alkyl Ketene Dimer Sizing in Calcium Carbonate Filled Papers
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小鼠股骨钙的含量低聚谷氨酸钙组极显著高于碳酸钙组(P0.01)。
The calcium content of femoral bone of the oligomeric glutamate calcium group was significantly higher than that of calcium carbonate group ( P0.01 ) .
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研究了不同表面处理剂改性木粉填充回收PP的力学性能、加工性能.采用扫描电镜观察了纳米碳酸钙包覆木粉的形态,并对其耐热性能进行了分析。
Mechanical and processing properties of wood flour filed recycled PP with different surface modification agent were studied and the coating wood flour with nano-CaCO_3 were observed through SEM .
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采用缓慢分解法和两步法的附晶生长法,在低温(0℃~70℃)下实验合成纯文石型碳酸钙矿物,以XRD和SEM技术对合成矿物的相组成和形貌进行了鉴定。
Aragonite at 0 to 70 ℃ was synthesized by slow decomposition and two step overgrowth approaches . The phase compositions and morphology were detected by XRD and SEM techniques .
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以氧化钙和CO2为主要原料,用超重力RPB反应器制备了立方型纳米碳酸钙粉末。
Nanometer calcium carbonate powders prepared by the carbonation reaction in HG reactor through Ca ( OH ) _2 and CO_2 was studied .
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同时纳米级碳酸钙改性PP的SALS图像变得弥散、模糊,PP球晶变得不完善,晶粒更小。
Furthermore , the SALS images of nano-CaCO_3 modified PP became dispersive and fuzzy , the PP spherocrystal became defective and the PP crystallite became smaller .
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碳酸钙和锌对五种基因型小麦生长、锌吸收及营养液中HCO3~-含量和pH的影响
Effects of CaCO_3 and Zn on growth and Zn uptake of five winter wheat genotypes as well as HCO_3 ~ - concentration and pH in nutrient solution
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土壤速效氮磷钾对腐殖质各组份都有影响,但对HA/FA比值影响最大的是碳酸钙和pH。
The available N , P and K contents in soil affect the compositions of humus , and the calcium carbonate and pH of soil are the most important factors in affecting the ratio of HA and FA .