科莱恩正式推出3D打印业务

正特种化学品的全球领导者科莱恩近日宣布推出全新3D打印业务,以满足快速变化的3D打印市场对高品质及定制3D打印线材的需求。科莱恩在使用颜料、添加剂和色母粒为广泛终端市场应用定制聚合物方面具备多年的专业经验。科莱恩3D打印新业务充分利用了这方面的经验,提供了高品质的3D打印线材及定制解决方案。科莱恩3D打印业务对其所有材料进行打印测试,以确保材料的可打印     

这家公司造出3d打印TPU免充气自行车轮胎

正BigRep正在继续研究创新的3打印轮胎;这次他们专注于自行车。为了帮助我们更清楚地看到他们的愿景,BigRep推出了一种新的3D打印轮胎,该轮胎使用其大型工业机器之一BigRep One进行打印。该创业公司表示,已经找到了避免刺破的解决方案,这将使所有的骑行者能够更平静地骑自行车。他们还解释说,他们的轮胎可以适应任何类型的环境,甚至允许骑车人定制胎面和自行车轮胎的内部结构!     

科莱恩正式推出3D打印业务,为快速变化的3D打印市场提供解决方案

正科莱恩最近宣布推出全新3D打印业务,以满足快速变化的3D打印市场对高品质及定制3D打印线材的需求。3D打印技术目前正迅速发展,过去7年全球年平均增长率超过28%,2017年全球总销售额达60.63亿美元(《2017年沃勒斯报告》)。3D打印已经从一种利基技术发展为生产独特产品的行业。举例来说,目前耳内式助听器的塑料     

3D打印技术发展及塑性材料创新应用

为充分发挥三维打印技术(3D打印)在工业生产和科技创新中独特的先进制造能力,以非金属材料、金属材料和生物材料为分类,系统介绍了3D打印硬件设备的成型原理和技术特征,详细分析了3D打印常用材料尤其是塑性材料的性能特性、应用方向以及新材料的研发趋势,对3D打印在工业级应用中的优缺点进行了系统总结和评价,并客观分析了3D打印技术推广普及的瓶颈,最后通过实际案例介绍了塑性材料3D打印在个性化医疗器械定制方面的应用方法和综合优势。     

3D打印技术在化妆品领域的应用

随着科学技术的飞速发展，许多先进技术接踵而来，3D打印技术作为新时代科技的代表，被称为“第三次工业革命核心技术”，具有高精密性、个性化和智能化的特点，在机械工业、建筑行业、食品加工以及医疗教育等众多领域都得到广泛应用。近年来，个性化定制产品在市场上掀起了一股热潮，3D打印技术作为快速定型和个性化定制的有效手段，结合化妆品的特色可实现有效精准护肤和个性化定制，可以满足各种不同的护肤化妆需求。文章探索3D打印技术在化妆品领域的发展现状，进一步介绍3D打印技术在个性化护肤品、化妆模具以及定制妆容中的应用与优势，以期为皮肤的精细化护理和智能化妆的发展提供思路。     

Formlabs和吉列公司合作生产3D打印剃须刀手柄

<正>据"www.ptonline.com"报道,吉列公司与位于波士顿地区的3D打印设计和制造公司Formlabs合作,为消费者提供一系列可定制的Razor Maker 3D打印剃须刀手柄。每个Razor Maker剃须刀手柄,均采用Formlabs公司研发的光固化(SLA)3D打印技术在吉列公司的波士顿总部进行3D打印成型。Formlabs为吉列公司开发了一种定制材料,以满足吉     

基于水凝胶3D生物打印在组织工程中的应用

3D打印以其个性化定制、快速精准成型的优势,在国家政策的支持下快速发展,3D生物打印作为3D打印的重要组成部分,可以结合细胞进行组织工程支架等的制备,在药物筛选、组织工程再生等方面具有巨大的优势.本文从水凝胶3D生物打印技术、组织工程3D生物打印水凝胶材料及应用方面进行阐述,旨在对科研工作者有一定帮助.     

浅谈3D打印技术在生物医学领域的应用与发展

3D打印技术能够进行个性化定制,给生物医学领域带来了新的技术突破。本文首先概述了3D打印技术,之后就其在生物医学领域的应用和发展前景展开了论述。     

气压挤出式3D打印工艺在陶瓷灯具设计中的应用研究

对气压挤出式3D打印陶瓷工艺进行探索,为现代陶瓷灯具产品设计迈向参数化、智能化与定制化发展提供可行性研究路径。通过对比现有陶瓷灯具制造过程中存在的问题,分析3D打印陶瓷工艺的技术优势,从灯具产品设计制造整体流程,探讨气压挤出式3D打印技术在陶瓷灯具设计中的运用方法,结合计算机辅助设计、三维扫描与虚拟仿真等技术,计算得出陶瓷灯具缩水率及产品风格类型。相较于传统制陶工艺,3D打印陶瓷工艺具有制造数字化、造型自由化与个性定制化的工艺优势,产品形态主要为规则几何、不规则扭曲、交错填充、仿生形态这四种类型。借助气压挤出式3D打印陶瓷工艺对陶瓷灯具产品制作方法、模式及造型进行创新,将现代技术与传统陶瓷行业有机结合,跟随时代消费需求和销售模式的转变进行生产,为陶瓷产业发展提供了新的参考。     

设计师创建3D打印自行车头盔

正3D打印一直是各种产品线创新的关键。最近,加拿大工业设计师Gabriel Boutin和增材制造专业设计公司Syncro Design的创始人Gabriel Boutin受3D打印的启发,开发了一系列3D打印自行车头盔。这个名为Kupol的项目专注于设计和制造更舒适的自行车头盔。由于采用了专利的3D打印塑料结构,新的Kupol头盔保持空气能够流过,使得头部较凉爽。整个头盔的重量也比传统头盔轻。     

个性化多层结构气道支架设计与3D打印

针对现有气道支架在临床应用时存在再狭窄发生率高、组织感染和容易移位等缺点,提出了一种基于3D打印技术的气道支架个性化定制方案.借助计算机进行三维建模,设计形状和尺寸与患者气道局部解剖结构精准匹配、具有3层结构和表面分布有钉状凸起的个性化气道支架模型.以医用级热塑性聚氨酯为材料,采用3D打印机制备气道支架,研究打印温度、...     

Optimization of 3D printing parameters for high-performance biodegradable materials

Developing 3D printing high-performance biodegradable materials is important to protect the environment and deal with emergencies such as COVID-19. Fused deposition modeling (FDM), one of the 3D printing methods, has many advantages, such as low cost and wide range of materials. However, the weak interlayer adhesion is an important factor restricting the development of FDM. In addition to the influence of material properties, the optimization of 3D printing parameters is also an important means to give full play to the inherent properties of materials. The optimal 3D printing parameters are conducive to the diffusion and entanglement of molecular chains between adjacent layers. PLA/PBAT/PLA-g-GMA (70/30/10 wt%, PLA-g-GMA was a compatibilizer synthesized in our lab) was used as the research object. This work aims to analyze the mechanical properties response of biodegradable polymers products manufactured through FDM. Herein, the effect of 3D printing parameters including layer thickness, nozzle temperature, printing speed and platform temperature have been systematically investigated by orthogonal experimental design. The result showed that the excellent performance of 3D printing specimen was obtained when the layer thickness was 0.15 mm, the printing speed was 50 mm·s⁻¹, the nozzle temperature was 200°C and the platform temperature was 50°C. The SEM images showed that the optimal 3D printing products had the best interlayer adhesion and the lowest porosity. Undergoing optimization of 3D printing processing, the yield strength and elongation at break of specimen increased by 115% and 229%, respectively. In this paper, the interlayer adhesion and mechanical properties of 3D printing products can be significantly improved by simply optimizing the 3D printing parameters without complex material modification. This work provided a new method for improving the interlayer adhesion of FDM and the mechanical properties of FDM products.     

An overview of poly(vinyl alcohol) and poly(vinyl pyrrolidone) in pharmaceutical additive manufacturing

Recently, drug personalization has received noticeable attention. Problems arising from standard generalized drug treatments have aroused over the years, particularly among pediatric and geriatric patients. The growing awareness of the limitations of the “one-size-fits-all” approach has progressively led to a rethinking of the current medicine's development, laying the basis of personalized medicine. Three-dimensional printing is a promising tool for realizing personalized therapeutic solutions fitting specific patient needs. This technology offers the possibility to manufacture drug delivery devices with tailored doses, sizes, and release characteristics. Among additive manufacturing techniques, fused deposition modeling (FDM) is the most studied for oral drug delivery device production due to its high precision and cheapness. By playing with factors such as drug loading method, filament production, and printing parameters, the medication release profile of a drug delivery device produced by 3D printing can be tailored depending on the patient's requirements. This review focuses on the applications of FDM in drug fabrication using poly(vinyl alcohol) (PVA) and poly(vinyl pyrrolidone) (PVP) as drug-loaded matrices. The authors aim to provide an overview of the current trends in this research field, with special attention to the effect of the printing parameters, tablet shape, and drug distribution and concentration on drug customization and personalized drug release.     

Tensile properties and corrosion resistance of PCL-based 3D printed composites

The practicality of implantable biomedical materials depends on the design of size and function to meet the needs of personal customization. This paper used fused deposition modeling 3D printing process to make composite materials, and studied the performance of 3D printed samples through different matrix molecular weights, print filling settings, additives, and their contents. Mechanical properties, thermal analysis, structural characterization, surface hydrophilicity, and functional verification of PCL-based 3D printed composites were discussed. We found that 80% print filling and 10% SA addition could greatly improve the work of fracture of the tensile sample. Furthermore, the efficacy and content of CS was also verified and analyzed. These resulting information are helpful for structural design and functional matching of medical composites.     

3D打印成型陶瓷零件坯体及其致密化技术

3D打印技术在陶瓷零件成型方面具有较大应用潜力,被认为是近净尺寸成型高性能复杂结构陶瓷零件的一种新途径。本文比较了陶瓷零件或其坯体的激光选区熔化、薄材叠加制造、熔融沉积造型、光固化、三维打印和激光选区烧结等不同3D打印工艺及其致密化手段的优势和不足,认为较低的相对密度和强度是阻碍3D打印陶瓷零件实现产品应用的主要障碍。本团队近年来采用造粒混合法制备出具有良好流动性的3D打印复合陶瓷粉体,再通过激光选区烧结(SLS)和冷等静压(CIP)技术分别进行坯体成型及均匀致密化处理,制备出了高性能、复杂结构的Al_2O_3致密陶瓷零件。本文回顾了这些工作,并补充介绍了溶解沉淀和溶剂蒸发这两种制备复合陶瓷粉体的新方法,利用SLS/CIP复合工艺进一步制造了ZrO_2、SiC、高白土等其它材质的复杂陶瓷零件,为3D打印陶瓷用于航空航天、医疗、艺术等领域奠定了基础。     

水泥窑余热发电系统三维设计实现途径研究

为提高设计质量，比较多种三维设计软件后，针对水泥窑余热发电工程设计难点，采用以PLANT 3D、Solidworks等三维设计软件为主，用于水泥生产线余热发电工程设计。结合具体工程应用，分别就余热锅炉、余热发电站、厂区蒸汽及热水管网这三个工艺子项介绍具体实施方法，大幅提升了设计准确性及效率。     

基于Solidworks二次开发技术的注射机合模机构零件参数化设计

介绍了Solidworks软件二次开发的对象模型、工具、方法及步骤,并以注射机中应用较广的箱式前模板为实例进行了详解。又以Solidworks三维软件为支撑平台,开发了注射机合模机构参数化设计系统,能直接生成形象的三维合模机构装配体,这对注射机合模机构参数化设计软件以及同类产品的开发具有实际的指导意义。     

陶瓷增材制造(3D打印)技术研究进展

高性能陶瓷是现代技术发展和应用不可或缺的关键材料。常规的陶瓷制造技术难以满足对个性化、精细化、轻量化和复杂化的高端产品快速制造的需求。新兴的增材制造技术(3D打印)在高性能陶瓷的成型制造领域具有巨大的发展潜力,有望突破传统陶瓷加工和生产的技术瓶颈,为陶瓷关键零部件的应用开辟新的途径。本文针对陶瓷材料及其快速成型和后处理工艺,重点阐述了三维打印技术、光固化成型技术、选择性激光烧结技术等主流陶瓷增材制造技术的研究现状,并指出了目前存在的问题及发展趋势。     

活性污泥法脱氮除磷工艺的优化设计

利用活性污泥2D模型对城市污水厂脱氮除磷工艺进行优化设计,构建A²/O工艺的仿真模型,通过模型校正对工艺参数进行优化,并将优化设计与传统设计法和试算法进行比较。结果表明,优化模型得出的模拟结果与实验测定值基本相吻合。优化设计法得出的污水厂基建费用和运行成本与其他两种方法相比,都有了很大的降低,虽然出水水质略有下降,但仍满足国家排放一级B标准。活性污泥2D模型可以对污水厂进行优化设计和控制。在满足出水水质前提下,降低污水厂的费用,并对以后的工艺设计提供理论指导。     

Fabrication of bulk piezoelectric and dielectric BaTiO3 ceramics using paste extrusion 3D printing technique

A simple and facile method was developed to fabricate functional bulk barium titanate (BaTiO₃, BT) ceramics using the paste extrusion 3D printing technique. The BT ceramic is a lead-free ferroelectric material widely used for various applications in sensors, energy storage, and harvesting. There are several traditional methods (eg, tape casting) to process bulk BT ceramics but they have disadvantages such as difficult handing without shape deformation, demolding, complex geometric shapes, expansive molds, etc. In this research, we utilized the paste extrusion 3D printing technique to overcome the traditional issues and developed printable ceramic suspensions containing BT ceramic powder, polyvinylidene fluoride (PVDF), N,N-dimethylformamide (DMF) through simple mixing method and chemical formulation. This PVDF solution erformed multiple roles of binder, plasticizer, and dispersant for excellent manufacturability while providing high volume percent and density of the final bulk ceramic. Based on empirical data, it was found that the maximum binder ratio with good viscosity and retention for desired geometry is 1:8.8, while the maximum BT content is 35.45 vol% (77.01 wt%) in order to achieve maximum density of 3.93 g/cm³ (65.3%) for 3D printed BT ceramic. Among different sintering temperatures, it was observed that the sintered BT ceramic at 1400°C had highest grain growth and tetragonality which affected high performing piezoelectric and dielectric properties, 200 pC/N and 4730 at 10³ Hz respectively. This paste extrusion 3D printing technique and simple synthesis method for ceramic suspensions are expected to enable rapid massive production, customization, design flexibility of the bulk piezoelectric and dielectric devices for next generation technology.