高效快速纤维球过滤器的应用

介绍了纤维球过滤器的特点、工作原理及其在脱盐水装置中的应用效果。     

PMMA的摩尔质量对其介电性能的影响

向塑料光纤纤芯材料纯PMMA中引入链转移剂正丁硫醇（n—BM）以控制摩尔质量。研究了正丁硫醇用量对PMMA介电性能（相对介电常数εr、介质损耗因素、松弛频率fr与体积电阻率ρv）的影响。结果表明，PMMA的介电性能几乎不受影响，同时还发现，PMMA的摩尔质量和摩尔质量分布的变化对其密度影响不大，说明塑料光纤在控制摩尔质量时可以兼顾力学性能与介电性能。     

微发泡木塑复合材料的研究进展

针对PE／木纤维、PVC／木纤维、PP／木纤维、PS／木纤维四种微发泡木塑复合材料体系，介绍了国内外在性能改进及工艺设备方面取得的一些进展。分析了目前该领域的现状及今后的发展方向，并展望了微发泡木塑复合材料未来的应用领域及市场前景。     

基于光载无线交换的数据传输系统

根据智能农业这一未来农业的发展方向的要求,结合光载无线交换技术的原理及特点,提出的一种新型的基于光载无线通信(ROF)技术的数据传输系统。它不仅具有ROF大容量、低成本、可重构的特点外,还结合数字光纤、以太网技术和无线局域网技术,可以安全可靠地将数据采集层的数据传输给业务层。     

Cement-based materials for stress sensing by dielectric measurement

The self-sensing of stress by measurement of the relative dielectric constant (κ) has been shown in cement pastes containing steel fibers of 8 μm diameter and carbon filaments of 0.1 μm diameter. The κ value increases nonlinearly and quite reversibly with compressive stress up to 6.4 MPa, although the reversibility is not complete. Inferior sensing performance was observed in cement paste with carbon fibers of 15 μm diameter, although the performance was still better than cement paste without admixture.     

A comparison of bending strength between adhesive and steel reinforced concrete with steel only reinforced concrete

Cracking of brittle cementitious composites subjected to excessive loading causes a potential reduction in material performance. Steel bars or metal fibers typically act as tensile reinforcing in concrete composites to increase the material's structural capacity in bending and to delay or prevent matrix cracking.The goal of this research is to determine whether the performance in bending strength and material integrity of a typically reinforced cementitious composite may be improved through the release of “healing” chemicals, such as adhesives, from hollow fibers into cracks induced by loading in addition to the metal reinforcing. Adhesive-filled repair fibers are intended to break immediately upon cracking in the concrete thereby activating the healing process with the release of a sealing or adhering substance. This self-repair occurs whenever and wherever cracks are generated.     

Studies on expansion properties in mortar containing waste glass and fibers

The utilization of waste glass in concrete can cause cracking and weakening due to expansion by alkali-silica reaction (ASR). In this study, ASR expansion and properties of strength were analyzed in terms of waste glass content, glass color (brown, green), fibers (steel fiber, polypropylene fiber) and fiber content, in anticipation of reducing ASR expansion.Results showed that green waste glass was more usable than brown because its expansion was less than that of brown glass. Using the accelerated ASTM C 1260 test of waste glass, no pessimum content was found. Furthermore, when fibers and waste glass were combined, there was an effect on the reduction of expansion and strength loss due to ASR between the alkali in the cement paste and the silica in the waste glass. In particular, adding 1.5 vol.% of steel fiber to concrete containing 20% waste glass reduced the expansion ratio by 40% and increased flexural strength by up to 110%, a vast improvement when compared with using only waste glass (80 °C H₂O curing) by itself.     

螺旋缠绕厚壁压力容器封头段的线型调整

给出螺旋缠绕厚壁压力容器封头段纤维层厚度的计算公式以及线型调整的基本方法 ,通过调整线型 ,以达到螺旋缠绕厚壁压力容器封头段既不滑线又满足封头段强度要求的目的     

Behavior of high strength concrete with and without steel fiber reinforcement in triaxial compression

Based on an extensive experimental program, this paper studies the behavior of high strength concrete and steel fiber reinforced high strength concrete under uniaxial and triaxial compression. Triaxial stress-strain relations and failure criteria are used to evaluate the effect of steel fiber reinforcement on the mechanical properties of high strength concrete in triaxial compression, which is found to be insignificant.     

中国化学纤维工业现状及产业用纺织品的发展

概述了中国化学纤维工业的现状和今后的发展方向.着重介绍了中国产业用纺织品的原料、产品开发方向及其主要类别的应用情况.