共查询到20条相似文献,搜索用时 93 毫秒
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采用钛酸酯对纳米贝壳粉(SP)进行了表面改性,并制备了改性纳米贝壳粉;通过与天然胶乳共混,制备了天然橡胶/贝壳粉(NR/SP)纳米复合材料;使用傅里叶红外光谱仪、扫描电子显微镜、表面接触角测定仪、XRD衍射分析仪、激光粒度仪和电子拉力试验机等研究了改性纳米贝壳粉对天然橡胶纳米复合材料力学性能的影响。结果表明,改性剂钛酸酯成功地偶联到贝壳粉表面,经过表面化学改性后贝壳粉表面接触角由73.5°增大到110.8°;当纳米贝壳粉用量为10%时,NR/SP复合材料可获得最佳力学性能,拉伸强度可达到34.05MPa。 相似文献
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为制备纳米孔贝壳粉并获得最优工艺条件,在单因素实验的基础上,采用三因素三水平正交设计法,研究贝壳粉煅烧活化的煅烧温度、煅烧前贝壳粉粒径、煅烧时间3个因素对贝壳粉的比表面积的影响。研究结果表明:3个因素对贝壳粉比表面积的影响大小次序为:煅烧前贝壳粉粒径、煅烧温度、煅烧时间。通过正交试验获得最优方案并进行了验证试验,确定制备纳米孔贝壳粉的优化工艺条件为:颗粒粒径600目、煅烧温度900℃,煅烧时间1.5h,在此条件下制备的纳米贝壳粉平均孔径分布在0.4~1.5nm,比表面积为10.92860m~2·g~(-1),可应用于果蔬的农药残留、重金属吸附。 相似文献
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阻燃剂在建筑材料中的应用进展 总被引:1,自引:0,他引:1
介绍了阻燃剂的种类及阻燃机理,结合绿色环保理念,探讨它在建筑材料中的防火应用。钢材防火以涂饰阻燃涂料为主,电线电缆及工程塑料的阻燃可以采用涂饰阻燃材料和添加阻燃成分改性,木材的阻燃则采用浸渍法,纸质的阻燃则采用浸渍法和添加阻燃成分法。综述了各类阻燃剂在这些建筑材料中的应用情况,展望了阻燃剂在建筑材料中的应用前景和发展趋势。 相似文献
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聚丙烯用阻燃剂及阻燃聚丙烯 总被引:27,自引:3,他引:27
详细介绍了聚丙烯的燃烧特征和目前采用的阻燃方法以及应用于聚丙烯的阻燃体系、阻燃性能、应用领域,并指出了阻燃聚丙烯的发展方向。随着人们安全意识的提高和法律法规的不断完善,相信阻燃聚丙烯将会有越来越广阔的市场。 相似文献
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特殊形貌氢氧化镁阻燃剂的研究与应用 总被引:3,自引:0,他引:3
简要介绍阻燃剂的种类、发展趋势和氢氧化镁作为阻燃剂的优点。重点评述了特殊形貌氢氧化镁的特点,及其作为阻燃剂在国内外的应用研究现状。本文作者利用水热合成法、通过加入适量的晶习改变剂制备出了片状、针状以及复合型纤维状的氢氧化镁微粉。 相似文献
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《国际聚合物材料杂志》2012,61(3-4):297-313
Abstract Flammability and thermal properties of industrial flame retardant polyolefines used for making parts in color televisors have been studied. The influence of thermal ageing on mechanical properties and fire behaviour of polypropylene material has been shown. Thermogravimetric data have been used to evaluate kinetic parameters for thermo-oxidative decomposition of some flame retardant polypropylene materials. 相似文献
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《Journal of Adhesion Science and Technology》2013,27(14):1715-1724
In this work the influence of FRW-1 fire retardant treatment on the bonding strength of plywood was studied. The results showed that the bonding strength of FRW-1 fire-retardant-treated Poplar plywood decreased by 25.3% as compared to untreated plywood; furthermore, free formaldehyde in the fire-retardant-treated Poplar plywood decreased by 64.9% when compared to untreated plywood. In our studies we also analyzed: the pH value and the buffering capacity of fire-retardant-treated and untreated wood powder; and the influence of FRW-1 fire retardant treatment on the gelation time of urea-formaldehyde (UF) adhesives. The results show that FRW-1 fire retardants reduced the pH value and increased the buffering capacity of FRW-1 fire-retardant-treated wood powder. The gelation time of the UF adhesive mixed with FRW-1 fire-retardanttreated wood powder was shortened by 15% as compared with the untreated wood powder. The results of the scanning electron microscope analysis showed that the FRW-1 fire retardant was mainly confined to: the trachea lumen of the Poplar wood; the wall of trachea; as well as around the pits when using an impregnation method at ambient temperature and pressure. It is possible that this has led to the decrease in mechanical action between the veneer and the adhesive. 相似文献
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