剑麻纤维增强玻璃钢靠背椅性能研究

本文报导了一种环保性好、回收问题容易解决而学性能优越的新麻纤维－玻纤混杂复合材料开发应用情况。并以靠背椅为例，给出它和现有玻璃钢以及ＳＭＣ靠背整体力学性能上的比较。     

结构混杂GFRP棒拉伸力学性能试验测试

本文提出了一种结构混杂的工艺制造GFRP,以改善材料的脆性,并对其进行了拉伸及破坏试验,试验结果表明,结构混杂GFRP棒的拉伸应力一应变曲线呈现出双线性特征。     

PA纤维／环氧树脂超混杂复合材料的层压成型工艺

本文研究了ＰＡ纤维／环氧基体超混杂复合材料的层压工艺，确定了超混杂复合材料的铺层叠合及工艺条件，在此工艺条件下制备的复合材料具有优异的性能。     

结构混杂GFRP棒位伸力学性能试验测试

本文提出了一种结构混杂的工艺制造GFRP,以改善材料的脆性,并对其进行了拉伸及破坏试验,试验结果表明,结构混杂GFRP棒的拉伸应力一应变曲线呈现出双线性特征。     

PPS树脂评析及CF/PPS成型工艺探讨——PPS树脂性能及复合材料工艺研究进展

本文详细讨论了聚苯硫醚的基本特性,对流变性能、结晶性、热性能、分子松弛过程等指出了测试方法及前人所做的一些结果;研究指出纤维增强PPS预浸料的三种很有发展的制备方法:静电喷涂工艺、悬浮工艺和纤维/树脂纤维混杂编织工艺。     

聚丙烯纤维与钢纤维混杂时对混凝土抗裂性的影响

在确定的拌合工艺及相同和易性条件下，选用3种尺度聚丙烯纤维与钢纤维，进行单掺及混掺试验。通过圆环和平板试模对纤维混凝土的抗裂性进行了评价，得到了混杂纤维混凝土的最优组合。结果表明，混杂纤维混凝土在抗裂性上对比基准混凝土和单掺纤维混凝土具有优异的性能。达到既可改善混凝土抗裂性又能降低成本的目的。     

高纯度碳酸锶的制备

介绍了 在用复分解法生产碳酸锶旧工艺基地上研究出的一种新工艺。此工艺制得碳酸锶纯度高，产率稳定，无污染。     

混合纤维材料的技术与应用

混合纤维是指两种或两种以上纤维构成的材料,它结合了各组分的优点,在性能上互补,提高了产品的总体性能,通常作为复合材料的增强基材应用于众多领域。介绍了玻璃纤维和其他纤维混合构成的材料包括纤维的种类、混合的方式、生产技术工艺。     

N351新工艺炭黑开发成功

Ｎ３５１新工艺炭黑开发成功河北宣化钢铁公司炭黑厂以市场为导向，不断开发适销对路的产品，今年开发生产的Ｎ３５１新工艺炭黑１５０余吨，投放市场受到用户青睐。Ｎ３５１新工艺炭黑是一种高结构、粒径中等、补强性较高的橡胶用炭黑。它能赋予胶料较高的拉伸和撕裂强度...     

絮凝剂聚合氯化铝的合成新工艺

本文介绍一种合成聚氯化铝的新工艺。该工艺以工业硫酸，氯化钙和石灰为原料，一步合成聚合氯化铝，合成过程简单，合理，流程短。同时，还研究了聚合物氯化铝的应用性能。     

高性能外墙弹性乳胶漆的研制

介绍了一种新型的SiO2杂化水性聚氨酯与丙烯酸酯复合乳液制备高性能外墙弹性乳胶漆配方及工艺,讨论了成膜物质、助剂、颜填料及颜料体积浓度等因素对其涂膜弹性、耐候性、耐沾污性、耐水性等性能的影响。结果表明,研制的高性能外墙弹性乳胶漆各项性能优异。     

小型无人机C／G复合材料尾撑杆的研制

本文介绍了复合材料管件（无人机尾撑杆）的结构与铺层设计、基体树脂选择和成型工艺以及性能测试等内容。     

Cellulose–Polyvinyl Alcohol–Nano-TiO2 Hybrid Nanocomposite: Thermal,Optical, and Antimicrobial Properties against Pathogenic Bacteria

Cellulose fiber-reinforced composite has received great attention due to the high strength, stiffness, biodegradability, and renewability of the excellent natural biomaterials. Cellulose nanofibers for the development of organic–inorganic hybrid composite is relatively new filed of research. Cellulose macro and nanofibers can be used as reinforcement in the hybrid composite because of improved mechanical, thermal, optical, electrical, morphological, and biological properties. The hybrid nanocomposites were synthesized by an in situ sol–gel process in the presence of coupling agent. The sol–gel process has definitely proven its potential by providing the synthesis of various functional organic–inorganic hybrid nanocomposites through an in situ sol–gel process. The hybrid nanocomposites have been prompted by the ability to control the morphology of final materials. The photoluminescence spectral studies indicate that the emission shifts toward higher wavelength (326–532?nm) accompanied by a reduction in impurity centers with increasing concentration of poly(vinyl alcohol)–TiO₂ and hybrid nanocomposite. The final nanostructured TiO₂ hybrid nanocomposites with particle size ranging from 0.32 to 20?nm were characterized by Field -emission transmission electron microscopy (FE-TEM) analysis. Furthermore, cellulose–poly(vinyl alcohol)–nano-TiO₂ hybrid composite was characterized by Fourier transform infrared, X-ray diffraction, UV, Thermogravimetric analysis (TGA), Differential scanning calorimetry (DSC), FE-SEM–EDX, Field-emission scanning electron microscopy (FE-SEM), and FE-TEM analysis. The different analysis results of the hybrid composite indicate the optical transparency, optical properties, T_g, crystallinity, thermal stability, and controlled morphology of hybrid nanocrystalline composites. Finally, the cellulose–poly(vinyl alcohol)—nano-TiO₂ hybrid nanocomposites were tested against pathogens such as Gram-positive Bacteria Bacillus cereus and Gram-negative Escherichia coli for antimicrobial activity. These results show that the hybrid composite exhibited excellent antimicrobial properties against pathogens.     

碳玻混编单向复合材料的性能分析

采用碳纤维质量含量分别为7.4%、10.7%、13.8%的三种碳玻层间混编单向织物制备了纤维增强环氧树脂复合材料,分析了该类材料的力学性能与工艺性能。结果表明:碳玻层间混编复合材料的0°拉伸模量和0°压缩模量均随碳纤维含量的提高而升高,掺入碳纤维后碳玻混杂复合材料的0°拉伸强度比纯玻纤复合材料的有所降低,但随碳纤维含量的增加而升高,碳玻层间混编复合材料的0°压缩强度则没有明显的变化规律;掺入碳纤维后,碳玻层间混编复合材料的90°拉伸强度和模量均有所下降;低碳纤维含量的碳玻层间混编单向织物具有良好的Z向渗透性能。该类新材料未来有望在风电叶片结构减重和成本优化上发挥重要作用。     

混杂纤维复合材料双频副反射器的研制

针对双频副反射器的结构特点和技术要求，研究了混杂纤维复合材料的性能和成型工艺。主要讨论混杂纤维蜂窝夹层结构材料的力学性能、电气性能、双曲面表面振子阵列的成型工艺及双曲面成型技术等，解决了双曲面金属阵列成型和表面精度等技术难题。研制出双频副反射器在S频段的反射损耗为0．3dB，在S频段的传输损耗为0．3dB，型面精度达到0．226mm。     

Synthesis and characterization of hybrid fluoro‐emulsion based on silica/copolymer composite particles

BACKGROUND: To create a hydrophobic surface, a commonly used two‐step process is the formation of a rough surface and its subsequent modification with materials of low surface energy. Here, a new method for making a hydrophobic surface is proposed using emulsion copolymerization with a low‐surface‐energy fluoropolymer in the presence of a high percentage of silica particles creating a well‐spread roughness. RESULTS: Irregular core–shell structural composite particles such as of snowman shape and sandwich shape were obtained and characterized. The hydrophobicity and chemical structure of the hybrid film were investigated. It was found that strong inter‐ and intramolecular chemical bonding in the composite film may improve the properties of the hybrid film. Enrichment of fluorine on the film surface and well‐distributed roughness due to the silica particles covered by the fluoropolymer contribute to the increased hydrophobicity of the film. The water contact angle on the film increased from 106 ± 2° to 135 ± 2°. CONCLUSION: The stable core–shell hybrid latex synthesized in this work will be of use in preparing high‐performance hydrophobic aqueous coatings. Copyright © 2008 Society of Chemical Industry     

Electrocoagulation as a revived wastewater treatment method-practical approaches: a review

This review paper aims to demonstrate electrocoagulation (EC) as a revived technology and introduce recent steps of advanced configurations, along with hybrid approaches for the efficient electrochemical treatment of multi-sourced wastewaters. A brief theoretical background is also provided. Moreover, the practical applications of the process are presented, while no previous research has ever attempted to do so. Through online-based data research, it was found that there are 75 manufacturers of EC systems internationally. Industrial case studies reveal actual process conditions and economical data. America holds 33% of global EC systems' manufacturing share and it is considered the leader in EC innovative designs with a percentage of almost 59%. In America and Europe, composite schemes are nearly equivalent to EC autonomous systems, with respective percentages of 41% and 47%. The performance of a two-stage process combining electro-coagulation (EC) and electro-oxidation (EO) has been proven to be the most successful combination in industrial wastewater treatment, representing 54% of hybrid systems available globally. Most of the commercialized EC systems are of small-medium sizes, accounting for 88% of all systems available worldwide. The latest trends on new reactor and electrode configurations are also presented. EC has great potential for further improvement as there is strong academic background to support water treatment companies for industrial scale ups. Cylindrical type reactors tend to dominate due to the ease of their use and maintenance; meanwhile, hybrid systems of EC with EO, membranes and/or adsorption will continue to expand on the market due to the mature level of these technologies and their ease of adaptation. © 2021 Society of Chemical Industry (SCI).     

Inorganic–organic hybrid nanoporous materials as adsorbent to remove VOCs

Inorganic–organic hybrid nanoporous materials were prepared by the co-condensation of 1,2-bis(triethoxysilyl)ethane (BTSE) with 1,3-bis(triethoxysilyl)benzene (BTSB) or 4,4′-bis(triethoxysilyl)-1,1′-biphenyl (BTSP). The nanoporous materials had broad pore-size distribution in the range of mesopore and macropore. The nanoporous materials prepared by co-condensation of BTSE with more than 30 wt% of BTSP showed an enhanced removal capability of volatile organic compounds (VOCs) from air compared to that prepared with BTSE only, probably due to the affirmative interaction between VOCs and aromatic ring in the nanoporous materials. The VOC generation from polypropylene/talc composite (PPF) was reduced to around half when three part of these inorganic–organic hybrid nanoporous material was added per 100 part of PPF during the melt compounding process as an additive, which suggests a new application of nanoporous material.     

Synthesis and properties of low‐color polyimide/silica hybrid films

A series of polyimide precursors, poly(amic acid)s, containing propyltrimethoxysliane at two chain ends were prepared from 4,4′‐bis(4‐amino‐2‐trifluoromethylphenoxy)biphenyl ( I ) with six commercially available dianhydrides, followed by end‐capping with 3‐aminopropyltrimethoxysilane (APrTMOS). A new class of fluorine‐containing polyimide/silica composite films ( III ) with chemical bonds between the fluorinated polyimide backbone and the silica network has been synthesized from the APrTMOS‐terminated precursors with tetramethoxysilane via the sol‐gel process and thermal cyclodehydration. The resultant hybrid films were light‐colored, flexible, and tough. They had high levels of thermal stability associated with high glass‐transition temperatures (>251°C), 10% weight‐loss temperatures in excess of 527°C, and char yields at 800°C in nitrogen higher than 60%. For a comparative study, the analogous nonfluorinated polyimide/silica hybrid films ( III′ ), based on 4,4′‐bis(4‐aminophenoxy)biphenyl ( I′ ), and the neat fluorinated polyimide films ( IV ), based on diamine I , were also synthesized and characterized. The hybrid films of the fluorinated series III showed a higher transparency and less color intensity when compared with the nonfluorinated III′ analogs. They also revealed a lower refraction index and birefringence than pure polyimides ( IV ). © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 4046–4052, 2007