矿渣微粉对水泥基轻质保温材料性能的影响探究

利用水泥、矿渣微粉、激发剂和聚苯颗粒等材料,制备水泥基轻质保温材料,确定了矿渣微粉的最佳掺量为30%。使用复配激发剂对矿渣微粉的活性进行激发,当复配组分含量为1.5%CaO、1.5%NaOH和2%石膏时,强度最为理想,此时试样的3d和28d抗折、抗压强度依次为2.64 MPa、24.24 MPa、7.79 MPa、60.52 MPa,较空白试样对应提升36.1%、22%、20.4%、12%,并对其进行了机理分析。     

转相乳化法制备乙烯基酯树脂炭纤维上浆剂

以乙烯基酯树脂与端环氧基反应型液态丁腈橡胶为主浆料,采用转相乳化法制备乳液型炭纤维上浆剂.探讨乳化剂种类、质量比、乳化温度、搅拌速率和溶剂对乳液性能的影响.结果表明:当乳化剂壬基酚聚氧乙烯醚磷酸铵与蓖麻油聚氧乙烯醚质量比为3∶1,乳化剂质量分数为主浆料的10%、乳化温度为50℃、搅拌速率为10000r/min、苯乙烯质...     

Chemical modification of ethylacetoacetate with ASB in aqueous medium

Ethylacetoacetate (EAA) was mixed with aluminum sec-butoxide (ASB) in aqueous medium. The molar ratio among aluminum sec-butoxide, water, and ethylacetoacetate was 1:200:1. Water diluted nitric acid was added into the mixture until it finally transformed into transparent solution. TEM analysis showed that the surfaces of the colloidal particles with EAA were not as clean as those without EAA, implying the formation of a surface modification layer around the colloidal particle. The IR spectra analysis revealed that with the addition of EAA two characteristic peaks of EAA at 1 731 cm⁻¹ and 1 642 cm⁻¹ associated with C=O stretching vibrations were red-shifted to 1 619 cm⁻¹ and 1 530 cm⁻¹, respectively, indicating the occurrence of the chemical modification reaction among the C=O bonds of EAA and the surface Al-OH bonds of the particles., Furthermore it was confirmed by UV spectra analysis that the UV absorption band of EAA underwent 26 nm of red-shift as a result of the formation of the six-membered ring of the complex between ethylacetoacetate and ASB. It was examined that the chemical modification could be photolyzed by the UV illumination with a wavelength shorter than 270 nm due to the excitation of π − π * transition in the complex. Funded by the Doctoral Fund of University of Jinan (No. XBS0812)     

活性端基聚氨酯橡胶改性不饱和聚酯树脂的研究(Ⅱ)

通过在不饱和聚酯树脂中加入活性端基聚氨酯橡胶来降低树脂的体积收缩.树脂固化前,橡胶与不饱和聚酯树脂相溶性好;树脂固化时橡胶中的不饱和双键反应可参与反应,并呈一定粒径的胶粒析出.本文研究了几种活性端基聚氨酯橡胶对不饱和聚酯树脂收缩控制的影响.     

活性端基聚氨酯橡胶改性不饱和聚酯树脂的研究(Ⅰ)

通过在不饱和聚酯树脂中加入活性端基聚氨酯橡胶对树脂进行增韧.树脂固化前,橡胶与不饱和聚酯树脂相溶性好;树脂固化时,橡胶中的不饱和双键可参与反应,并与树脂发生相分离.改性后,树脂的冲击强度可提高60%以上,而且拉伸强度、弯曲强度及马丁耐热温度等物理机械性能的保持率也达60%以上.     

水泥复合夹芯板的研究

以水泥、聚苯乙烯泡沫塑料、砂、聚丙烯纤维及外加剂制作水泥复合夹芯板,研究了墙板的结构形式和生产工艺流程,并采用SEM观察复合材料的微观结构,探讨了聚丙烯纤维与基体的界面结合情况。     

复合减水剂对页岩陶砂保温抹面砂浆性能的影响

以页岩陶砂、珍珠岩为主要轻质骨料，与水泥胶结材料按一定配比混匀，加入适量外加剂，搅拌均匀后，经一定成型工艺制备而成页岩陶砂抹面砂浆，并利用扫描电镜等仪器进行测试分析。结果表明，掺加复合减水剂后，抹面材料拌和用水量减少，结构变得致密，抗压强度较高，保温隔热性能较好。     

复合减水剂对石膏性能的影响

将有机表面活性物质和粉煤灰作为复合减水剂掺加到建筑石膏中,建筑石膏的拌和用水量减少,结构变得致密,抗压强度和抗折强度提高。复合减水剂掺量在5%时,抗压强度和抗折强度最高,减水率>15%,效果较好。     

石膏发泡的研究

以建筑石膏、水泥为原料，采用复合发泡剂发泡制成墙体材料。研究表明，复合发泡剂可以对石膏浆体起到良好的发泡作用。     

聚氨酯耐磨复合材料的研究与应用

以聚氨酯树脂为基体材料与石英砂等硬质填料复合,经浇注、硫化工艺加工成具有弹性的耐磨复合材料;对此复合材料的耐磨性能及在磨机村板上的应用进行了实验研究,并从理论上对聚氨酯树脂与硬质填料的界面结合问题进行了分析.