1.The low melting glass of Na_2O-Al_2O_3-B_2O_3system was prepared,and the forming range of Na_2O-Al_2O_3-B_2O_3 was confirmed.制备了Na2OAl2O3B2O3系统低熔点玻璃,确定了Na2OAl2O3B2O3系统玻璃成玻范围,研究了玻璃的转变温度(Tg)、热膨胀系数(α)和玻璃的红外光谱,表明这种玻璃的熔...
The invention discloses a lubricant or a release agent with a low melting point. The raw materials comprise main components in weight ratio as follows: 30-60 of P2O5, 4-20 of B2O3 and 20-50 of Na2O. A preparation method comprises following steps: (1), heating: the components in the ...
2) melting point 熔融温度 1. As irradiation dose increases, the gel content and charpy impact strength increases, whereas crystallinity, melting point and elongation at break decreases. 结果表明 :在 0～ 30 0 k Gy的辐射剂量范围内 ,限定量的氧对 HDPE的性能并无太大的影响 ,HDPE的凝胶含量和...
2.Plenty of medical glass bottles which were present in medical wastes had rather lowfusion temperatures.实验结果显示,不同化学组分对熔融温度有不同的影响,SiO2能够提高医用玻璃的熔融温度,B2O3和碱金属氧化物(Na2O、K2O)会大幅降低医用玻璃的熔融温度,而碱土金属氧化物(CaO、BaO)和Al2O3会使医用玻璃的软化...
The low melting glass of Na_2O-Al_2O_3-B_2O_3system was prepared,and the forming range of Na_2O-Al_2O_3-B_2O_3 was confirmed. 制备了Na2OAl2O3B2O3系统低熔点玻璃,确定了Na2OAl2O3B2O3系统玻璃成玻范围,研究了玻璃的转变温度(Tg)、热膨胀系数(α)和玻璃的红外光谱,表明这种玻璃的熔...
Which has a higher boiling point: Xe or Kr? Explain. Which has a higher boiling point: CH3CH2CH2CH3 or CH3CH2CH3? Explain. Which has the higher lattice energy: Na2O or NaF? Explain. Does CCl4 or CH3OH have a higher boiling point? Explain why. Which of the following ionic com...
PURPOSE:To obtain the title product, by using steel mill slag, which occurs in the production of steel from pig iron, as its ingredient, whereby the steel mill slag can be utilized effectively and the melting point of coal ash can be lowered effectively. CONSTITUTION:The title melting point ...
白光LED用低熔点荧光玻璃,其特征在于它由包含Na2O,ZnO,B2O3,SiO2,Al2O3,CaO,MgO,K2O和Ce-YAG组分的原料制备而成;各组分所占质量百分数为:Na2O:1-20%,ZnO:0-20%,B2O3:20-40%,SiO2:10-30%,Al2O3:1-25%,CaO:0-10%,MgO:0-4%,K2O:0-1.5%,Ce-YAG:5-30%. White LED with a fluorescent low...
CONSTITUTION: The teeming flux for improving the surface of ingots comprises 2 to 10 wt.% of CaO, 35 to 45 wt.% of SiO2, 12 to 25 wt.% of Al2O3, 4 to 20 wt.% of Na2O, 3 to 10 wt.% of CaF2, 8 to 15 wt.% of carbon, and the balance being other inevitable impurities, ...
Each dotted box equates to an area of 1 mm  1 mm. (b) Distribution of the four characteristic temperatures for the nine volcanic ash, ordered as a function of SiO2 content. Each data point represents the mean value of two independent measurements; the s.d.'s are illustrated and ...