可防玻璃碎片飞散的涂料

一种可防止玻璃碎片飞散的涂料，最近在日本研制成功。这种涂料为液态，其主要成膜物是以氨基甲酸乙酯为原料制得。其弹性值（粘度性能）为50度～70度。采取喷涂法在玻璃表面喷涂一层即可防止玻璃破裂后从涂膜飞出。该涂料主要用于玻璃橱窗，在其他工业中也有较好的前景。可防玻璃碎片飞散的涂料     

玻璃料在功能性耐热涂料中的作用与特征

耐热涂料是有着广泛用途的一类特种涂料,通过向有机硅耐热涂料中加入玻璃陶瓷等耐热材料,可增强耐热涂料的热稳定性能,这也是近年来为提高耐热涂料的性能而被使用的最为方便的材料和方法。本文介绍了玻璃料在耐热涂料中的应用及特征。     

玻璃隔热涂料透明玻璃漆降低太阳照射温度

正据报道,北京志盛威华化工有限公司与部队研究院合作研发生产的ZS-311透明玻璃隔热涂料,透光度高,涂刷在透明玻璃的材质,在尽量形象可见光的同时,反射红外线和紫外线,起到很好的反射隔热作用。ZS-311透明玻璃隔热涂料根据不同的使用环境分为为水性透明玻璃隔热涂料和溶剂性透明玻璃隔热涂料两种,ZS-311透明玻璃隔热涂料其主要成分是氧化铟锡,含量达到40%,氧化铟锡利用本身材料特性和电     

玻璃鳞片导电涂料的研究

以自制的化学镀银鳞片石墨对传统的无溶剂型环氧玻璃鳞片涂料进行改性,制得了玻璃鳞片导电涂料。研究了含不同质量分数化学镀银鳞片石墨的玻璃鳞片导电涂层的电阻、表干/实干时间、厚度、硬度、耐蚀性及其BSE照片。结果表明,含有化学镀银石墨的玻璃鳞片涂料其表干/实干时间缩短、厚度增加、硬度和耐蚀性均有所提高。确定了化学镀银鳞片石墨在涂料中的最佳质量分数为30%。所得玻璃鳞片导电涂料的电阻率为252.75Ω·cm。     

空心玻璃微珠在反射隔热涂料中的应用

阐述了可用于填充反射隔热涂料的空心玻璃微珠的种类和特性,深入分析了空心玻璃微珠在反射隔热涂料中的作用机理。同时列举了空心玻璃微珠填充涂料的优良性能,并对今后空心玻璃微珠在涂料中的发展做出了展望。     

耐高温隔热保温涂料的研究

采用有机硅树脂、空心玻璃微珠和无机纤维为主要原料制备隔热保温涂料。讨论了空心玻璃微珠的用量与种类、涂料生产工艺,以及涂料中加入无机纤维后对涂料隔热性能的影响。使用扫描电子显微镜观察保温涂料的微观形态。实验结果表明,空心玻璃微珠的适宜用量为33-36g;从保温效果及生产工艺综合考虑,型号为7032的空心玻璃微珠最佳;搅拌速度300r／min、反应时间20min时制得的涂料导热系数最小;加入硅酸铝纤维的涂料冲击强度最好。     

高性能空心玻璃微珠对涂料隔热性能影响的研究

采用纯丙乳液为基料,高性能空心玻璃微珠为功能性填料成功制备了隔热保温涂料,并与分别含重晶石粉、硅微粉、云母粉及硅藻土等功能性填料的涂料的隔热性能进行了对比研究,最后考察了空心玻璃微珠类型及用量对涂料隔热性能的影响。结果表明:空心玻璃微珠的隔热性能优于重晶石粉、硅微粉、云母粉、硅藻土及漂珠;空心玻璃微珠的密度越小,其平均粒径越大,用其配制的涂料隔热性能越好;并且当空心玻璃微珠的用量为涂料总量的15%左右时,涂料的隔热性能最佳。     

水性玻璃涂料用丙烯酸树脂的合成与应用研究

所研究的水性玻璃涂料用树脂属于水稀释性丙烯酸树脂,主要采用水作为玻璃涂料分散剂,可有效降低溶剂型玻璃涂料的溶剂释放,减少VOC排放,也可显著提高施工固化过程中的安全可靠性,并且保留溶剂型玻璃涂料在机械性能、防护性能及装饰性能等方面的优点。主要讨论了酸值、玻璃化温度、中和剂、固化剂及附着力促进剂构等诸多因素对水性玻璃涂料树脂的合成与应用性能的影响规律。     

新型保温隔热水性涂料的制备及性能研究

采用新型玻璃微珠保温隔热多功能材料,以乳液为成膜物制备了保温隔热水性涂料,通过扫描电镜(SEM)对玻璃微珠的物理结构进行了分析,并与普通涂料性能进行了对比研究。结果表明:添加玻璃微珠的涂料较普通涂料的保温隔热性能有明显提高,同时,涂料的性能随着玻璃微珠添加量的增加而提高,但添加过多时微珠会产生集聚,影响保温隔热的性能。     

海洋环境防腐蚀玻璃鳞片涂料的研制

用中碱玻璃鳞片为主要防腐蚀颜料,制备了一种适用于海洋气候的高固含厚浆型环氧玻璃鳞片涂料,并且考察了不同玻璃鳞片及其用量、粒径对涂层耐介质性能的影响。结果发现选用偶联剂包覆较好的玻璃鳞片,粒径为300目,用量为20%~25%,最能发挥其阻隔屏蔽效应。并且针对海洋环境的特殊性,对比测试了环氧玻璃鳞片涂料和普通环氧涂料的耐阴极剥离性能。     

Theoretical Investigation of Heat Transfer in Glass Forming

A theoretical study to investigate internal heat transfer in glass undergoing cooling between glass and mold, as well as plunger, during and after pressing, is described. A thermal model has been formulated to simulate the cooling. The heat-transfer analysis accounts for the spectral nature of radiation in glass, the dependence of the thermophysical properties of glass on temperature, and the contact heat transfer between and after pressing, as well as subsequent cooling. Heat exchange between glass and mold by contact conduction across a very small gap and that by thermal radiation are considered separately. Numerical solutions have been obtained for typical conditions simulating symmetric and nonsymmetric cooling, and the results obtained are presented and discussed. During the dwell time, thermal-contact conduction between glass and mold is the dominant mechanism for heat extraction from glass. Results show that radiation from the surface of the glass plays a relatively small role in the heat extraction from the glass, but that radiation from the interior of the glass is much more significant.     

Temperature Distribution and Heat Flow in Glass in Blank Molds of Container Machines

A new method is described that helps to determine the temperature distribution of glass in blank molds. The effective coefficient of thermal conductivity, the heat flow within the glass, and the proportions of radiation and conduction may all be deduced from temperature profiles depending on the duration of contact between the glass and the mold. The results obtained lead to deductions as to the mechanism of heat transfer between glass and mold surfaces.     

热处理温度对铁镍合金膜层微观结构和镀膜玻璃性能的影响

为了研究不同热处理温度下铁镍合金薄膜的形貌结构以及镀膜玻璃的性能,本文采用真空电子束加热蒸发镀膜技术在玻璃基片上镀铁镍合金薄膜,通过多晶X射线衍射(XRD)和场发射扫描电子显微镜(FESEM)分析结构,测试镀膜玻璃的光学性能、电磁性能以及电磁屏蔽性能。结果表明:随着热处理温度的升高,薄膜的结晶性能变好,逐渐析出体心立方晶相,在(110)方向具有择优取向,当热处理温度过高时薄膜中出现孔隙;热处理温度对镀膜玻璃雾度的影响小于1%,但镀膜玻璃的可见光透过率、表面方块电阻和相对磁导率会随热处理温度变化呈现一定规律变化;铁镍合金镀膜玻璃在30 MHz以下的低频电磁波频段内的屏蔽效能大于30 dB,在14 kHz时最高达到55 dB,是一种低频电磁屏蔽的优选材料。     

Heat of Annealing in Simple Alkali Silicate Glasses

The enthalpy changes associated with annealing of glass were studied in simple and mixed alkali silicate glasses. The data indicate that during prolonged annealing the glass comes to a metastable equilibrium state and has a unique heat of solution which depends on its fictive temperature. The heats of solution of these glasses show a linear dependence on fictive temperature, and the magnitude of this dependence is related to the molar volume of the glass. The significance of these heat effects is discussed. The maximum heat effects which can occur on annealing sodium silicate glasses were measured and were approximately half as large as the enthalpy changes associated with the structural arrangements that occur during crystallization of these glasses.     

玻璃光纤制品医用消毒试验分析

通过对玻璃光纤制品进行常规的4种医用消毒试验，发现干热法和湿热法医用消毒对玻璃光纤制品基本无影响，但药物法和辐射法消毒则对玻璃光纤制品产生出不同程度损伤。试验发现，可以通过改变光学玻璃材料或增加表面增强技术等方法适应不同医用消毒方法，并提出了制造适合医用消毒的化学稳定性强的环保型光学玻璃、耐辐射光学玻璃、可拓宽玻璃光纤光传输波段光学玻璃以及研究玻璃光纤束表面增强技术的必要性和时代性。     

玻璃池窑的热平衡测试及节能评价

通过对玻璃池窑的热平衡测试、计算及分析，得到了该池窑玻璃液带出显热、潜热，池窑表面散热，观察孔口辐射散热、溢流气体显热以及烟气带走的显热等各项热指标。计算了玻璃液单位耗热、热效率、重油单耗及熔化率等主要技术经济指标。在这基础上，对该玻璃池窑的技术特点进行了分析和评价，最后，给出了今后进一步提高热效率的技术措施建议。     

颗粒填充液冷式散热器的传热及流阻性能

通过在液冷式CPU散热器蛇形流道内填充不同粒径的玻璃珠和碳钢珠,对改进前后液冷式CPU散热器进行实验研究,分析了各因素对液冷式CPU散热器的传热和流阻性能的影响规律。结果表明:散热器填充玻璃珠后的对流换热系数为填充前的1.4—2.5倍,阻力系数f是填充前的4—10倍;散热器填充碳钢珠的散热效果和流阻性能均优于填充玻璃珠的,其Nusselt数是填充玻璃珠的1.5—2倍,而流动阻力仅是填充玻璃珠的0.5—0.7倍。     

真空玻璃传导和对流传热机理研究

利用传导和对流传热原理,建立了真空玻璃热量的流动和传递数学模型,推导了真空玻璃自由分子状态的导热量、支撑柱及边料的固体导热及真空玻璃的外表对流换热方程.分析了自由对流传热、纯气体、稀薄气体、支撑柱及边料的固体导热机理,探讨了真空玻璃的外表对流换热问题.研究结果表明,在低真空状态下的真空玻璃夹层厚度越小,越有利于由自由对流向纯气体导热方向发展,越有利于真空玻璃传热系数的降低.真空玻璃结构只要保持夹层真空度小于0.313 Pa就使得夹层内成为自由分子导热状态.     

Vacuum Drying of Porous Solids under Supercooling

Vacuum drying of sintered glass beads, cemented glass balloons, and baked clay was investigated under supercooling. Glass beads and glass balloons, which were made of a common glass material, were used for comparison. Concerning sintered glass beads, there was no effect of supercooling on drying rates at a pressure of 0.93 kPa. In cemented glass balloons as well as in baked clay, however, a prominent peak of drying rates emerged in drying rate curves and at the same time, a stepwise increase in the surface temperature appeared under supercooling at a pressure of 1.19 kPa; no peak of drying rates emerged in drying rate curves of sintered glass beads. The total amount of latent heat of vaporization and sensible heat generated at the peak of drying rates was 39–59% of the latent heat of solidification. A part of the latent heat of solidification evaporated the water in the sample, producing a peak of drying rates as well as a stepwise increase in the surface temperature of the sample.     

Vacuum Drying of Porous Solids under Supercooling

Vacuum drying of sintered glass beads, cemented glass balloons, and baked clay was investigated under supercooling. Glass beads and glass balloons, which were made of a common glass material, were used for comparison. Concerning sintered glass beads, there was no effect of supercooling on drying rates at a pressure of 0.93 kPa. In cemented glass balloons as well as in baked clay, however, a prominent peak of drying rates emerged in drying rate curves and at the same time, a stepwise increase in the surface temperature appeared under supercooling at a pressure of 1.19 kPa; no peak of drying rates emerged in drying rate curves of sintered glass beads. The total amount of latent heat of vaporization and sensible heat generated at the peak of drying rates was 39-59% of the latent heat of solidification. A part of the latent heat of solidification evaporated the water in the sample, producing a peak of drying rates as well as a stepwise increase in the surface temperature of the sample.