恒逸成功首创无锑环保聚酯产品

由浙江恒逸石化有限公司研发中心自主立项、自主开发的钛系催化剂聚酯切片在2000t/a连续装置上成功试生产.恒逸无锑环保聚酯产品商标注册为“逸钛康”,具有完全自主知识产权.这是恒逸在国内同行中第一个成功开发出与锑系催化剂产品同等质量的长丝级无锑环保聚酯产品.     

球铰缩径机的开发与研制

介绍球铰缩径机的开发与设计,并为该机型配套设计了油路与电气控制系统。基于缩径模块的受力特点,应用有限元分析技术对模具及产品的应力集中进行了分析与计算。抗拉与抗扭试验结果显示,产品性能完全能达到工艺要求,验证了球铰缩径机型在橡胶球铰加工行业的可行性及可靠性。     

浅析无线物联网技术在陶瓷制品表面检测中的应用

随着无线物联网技术的深入应用,工业产品的检测方式步入无线化、智能化时代。针对该背景,笔者主要提出一种基于无线物联网的卫生陶瓷产品表面缺陷检测技术。检测系统采用Cortex-A8作为核心芯片构建嵌入式主控平台,并搭载基于OV2710的CMOS检测相机以及MF210型3G模块,在客户端基于Qt开发适用于工控的UI界面,采集到实时陶瓷产品表面缺陷图像后,采取灰色模型算法完成缺陷识别。笔者设计的表面缺陷识别系统能够高效处理陶瓷产品图像,工程实现难度低,组网灵活,适应性强,工程应用意义突出。     

智能PID设计软件在天然气液化设计项目上的应用

介绍了智能工艺设计软件SPP&ID在中国海油天然气液化设计项目中的应用研究概况,主要涉及该软件在天然气液化项目初步设计阶段中应用的功能、使用和二次开发.并通过SPP&ID软件实现开发基于现有自主液化工艺的典型设计模块,以达到优化和管理设计的目的.     

树脂催化剂催化生物法丁二酸双酯化工艺研究

采用自主开发的强酸型阳离子树脂催化剂进行对市售生物法丁二酸双酯化反应技术进行研究.首先对生物法丁二酸预酯化反应后的产品进行分离,分离后产品采用自主研发的树脂催化剂进行双酯化反应,研究了双酯化反应过程中,醇酸比、空速、反应温度及压力等操作条件对丁二酸双酯化反应的影响.考察了自主开发的树脂催化剂稳定性及活性,研究发现自主开发的树脂催化剂具有良好的活性与稳定性,具有良好的工业应用前景.     

基于传感器网络节点的电力电缆防火测温预警系统

介绍基于传感器网络节点的电力电缆防火测温预警系统的构成和系统采用的DSl8820数字温度传感器、LTM8003数字测温模块、GPRS网络以及在VB环境下自主开发的系统软件及其主要技术参数。     

贵轮集团推出极地子午胎

极地子午线轮胎是贵州轮胎有限公司按冰岛客户的特殊要求开发的，该公司历经5年时间攻关，成功开发出了一款适应冰岛极地严寒地区以及特殊使用环境的高性能轮胎产品。据称，该产品主要性能已达到或超过国外同类产品水平，具有完全自主知识产权，适合北美严寒地区及极地地区的使用，市场前景看好。     

榆能化聚烯烃新产品填补国内空白

正由陕西延长中煤榆能化公司自主开发的注射吹塑聚乙烯产品TB-5610Y通过行业相关标准检测,各项指标优异,可完全满足下游用户需求。该产品填补了国内注射吹塑小中空专用产品的空白。据榆能化公司技术部工作人员介绍,TB-5610Y产品是专门针对下游先进注吹工艺开发生产的专业产品,首批产品于5月28日在HDPE装置产出,这也是该装置     

基于万维引擎自主开发虚拟仿真实验——以流体阻力实验为例

化工类实验具有危险且复杂多变的特点。文章以流体阻力实验为例,阐述了基于万维引擎的网 页版虚拟仿真实验的自主开发过程,包括实验设备建模和渲染、教学模块设计、软件功能开发、逐项功能 测试等内容。所开发的虚拟仿真实验实现了虚拟实验与现场实验从设备到内容的紧密关联,契合真实 的实验教学过程,为国内外学生提供了在线学习与操作练习的机会,同时也是开展线上线下混合式实验 教学的重要基础。     

丁苯橡胶新牌号试产成功

正日前,由中国石油石油化工研究院自主开发的丁苯橡胶新牌号SBR1739在兰州石化公司合成橡胶厂成功实现工业化试生产,经检测产品完全能够满足高性能轮胎制备的要求。这标志着中国石油在合成橡胶高端定制化新产品开发方面迈出了新步伐。SBR1739是为固特异高性能轮胎特别设计的专用丁苯橡胶,系高端定制化产品,其年需求量约     

压力对X线胶片潜影衰退的影响

对压力引起X线胶片潜影衰退的影响进行研究 ,得出压力越大、受压时间越长、潜影衰退越甚。表现在经显影后影像密度越低。拍摄好的X线胶片应避免受到挤压和弯曲     

挤出物形态与结构的层析图像法研究

基于聚合物成型机理的三维层析数字图像化原理，对熔融段挤出物进行了Ｘ射线层析图像实验，阐述了实验原理，详细分析了挤出物形态与结构在层析图像中的特点。     

Experimental Investigation of the Froth Height in Columns with Sandwich Packings

Sandwich packings, consisting of alternatingly stacked conventional structured packings with different geometric surface areas, are promising for increasing capacity and efficiency of separation columns. Film flow and froth flow evolve along a stack, which requires comprehensive fluid dynamic analysis. In particular, the froth height is an essential parameter to determine the spatial extent of the flow regimes. Ultrafast X‐ray tomography and a 3D‐printed pressure drop profile measurement module were applied to independently estimate this parameter. The results are compared with existing correlations.     

X‐ray irradiated LDPE/PP blends with high mechanical and dielectric performance

In this study, the influences of polypropylene (PP) additive (varying from 20% to 80% wt) and low dose X‐ray irradiation (changing from 25 to 100 Gy) on the mechanical and dielectric properties of low‐density polyethylene (LDPE) were investigated. LDPE/PP film blends were prepared by hot press technique. While the highest Young modulus and tensile strength were observed for the 20%LDPE/80%PP blend at 25 Gy X‐ray irradiation, the same blend had the highest energy at break and percentage strain at break values for 50 Gy X‐ray exposure. These results also indicated a chain scission in the material. The differential scanning calorimetry curves also indicated a chain scission and crosslinking effects in the blends due to X‐ray irradiation. Hence, the higher concentration of PP additive and exposure of low dose X‐ray resulted in a polymer composite with high mechanical performance. On the other hand, the dielectric investigations revealed that the 25 Gy X‐ray irradiated 20%LDPE/80%PP blend may also attract attention for capacitor applications due to its increased static dielectric constant and reduced dielectric loss. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135, 46571.     

X射线荧光光谱法在矿石成分分析中的应用

X射线荧光光谱法（XRF）是应用比较早且至今仍在广泛应用的一种元素分析技术。因其具有分析速度快、精度高、灵敏度高、重现性好、分析元素范围广等优点,广泛的应用于矿石样品的成分分析。本文对X射线荧光光谱法（XRF）进行了概述,并对其在几种常见矿石样品分析中的应用进行了综述。     

Resolving Inclusion Structure and Deformation Mechanisms in Polylactide Plasticized by Reactive Extrusion

A multiscale characterization approach is developed to resolve the structure of inclusions in polylactide (PLA) plasticized with acrylated poly(ethylene glycol) (acrylPEG) by reactive extrusion. Scanning transmission X‐ray microscopy (STXM) coupled with near‐edge X‐ray absorption fine structure (NEXAFS) nanospectroscopy demonstrates that these inclusions have a core–shell morphology. This technique also proves that the inclusions consist of polymerized acrylPEG (poly(acrylPEG)), which is also confirmed by elastic modulus measurement using an atomic force microscope. The shell consists of poly(acrylPEG)‐rich domains, while the core is less rich in the polymerized plasticizer. Upon drawing, the density of the inclusion's core and shell markedly decreases as shown by microcomputed X‐ray tomography measurements, and no inclusion–matrix debonding is observed. At the same time, sub‐micrometer cracks are noted between inclusions by STXM/NEXAFS imaging, which may result from the presence of crosslinking points restricting the local chain mobility. Novel knowledge about the reactive extrusion‐induced PLA structure is released.     

CMOS数字图像传感器与照相机技术——信息记录材料在成像领域的技术进展(五)

CMOS图像传感器是数字图像技术系统的核心器件 ,是继CCD图像传感器问世 30年后的又一产品。分析了CMOS图像传感器的工作原理及其性能特点并与CCD图像传感器结构、内部特性、工艺、成本等作了系统的比较。     

Dynamic mechanical,thermal, and morphological properties of silane‐treated montmorillonite reinforced polycarbonate nanocomposites

Three different loading of 3‐aminopropyltriethoxysilane (APS) was used to modify the Na‐montmorillonite via cation exchange technique. The Na‐MMT and silane‐treated montmorillonite (STMMT) were melt‐compounded with polycarbonate (PC) by using Haake Minilab machine. The PC nanocomposite samples were prepared by using Haake Minijet injection molding technique. The intercalation and exfoliation of the PC/MMT nanocomposites were characterized by using X‐ray diffraction (XRD) and transmission electron microscopy (TEM). The thermal properties of the PC nanocomposites were investigated by using dynamic mechanical analyzer and thermogravimetry analyzer. XRD and TEM results revealed partial intercalation and exfoliation of STMMT in PC matrix. Increase of APS concentration significantly enhanced the storage modulus (E′) and improved the thermal stability of PC nanocomposites. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

The Manipulation and Alignment of Silicon Carbide Whiskers for Gallium Nitride Epitaxial Growth

As a substrate candidate for low‐cost III‐nitride thin film growth, 3C–SiC whiskers are employed and manipulated in this work. The alignment of the whiskers is achieved on a patterned 3M Vikuiti^? Brightness Enhancement Film surface. The degree of whisker alignment using this approach is higher than the whiskers lined up by extrusion methods according to X‐ray diffraction (XRD) analysis. The aligned whiskers are transferred from the 3M film and embedded into an alumina matrix by tape casting. A self‐regulating sintering technique for SiC whiskers is used to protect the whiskers from being oxidized in air during sintering at 1600°C. The aligned whiskers are rigidly embedded in the alumina matrix as shown in scanning electron microscopy (SEM) images and energy‐dispersive X‐ray spectrometry energy mapping images. GaN thin films grown by a low‐cost sputtering process on Alumina/SiC as well as Si and SiC as reference materials are characterized by XRD and SEM.     

Gas flow regime changes in a bubble column filled with a fibre suspension

Gas flow characteristics in opaque fibre suspensions have been captured on film using a stop‐motion X‐ray imaging technique called flash X‐ray radiography (FXR). Gas flows in a bubble column filled with various cellulose fibre suspensions from 0% (an air–water system) to 5% by mass have been observed. The gas flow regime changes from vortical to churn‐turbulent as the fibre concentration increases for a fixed superficial gas velocity. Two new gas flow regimes, identified as surge churn‐turbulent and discrete channel flow, have also been recorded at high fibre concentrations.