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浅析我国塑料成型技术的发展 总被引:2,自引:0,他引:2
随着人们对塑料制品品质要求的提高、应用领域的不断扩展,新的塑料制品成型技术不断涌现,本文综述了近年被进一步研发的动态注射成型、流体辅助注射成型(GAIM和WAIM)、微孔发泡注射成型、高速低压注射成型、交变注射成型、熔芯注射成型、旋转成型及反应挤出成型技术,简介了吹塑技术和模压技术的发展,并描述了其各自的特点。塑料制品的成型技术仍有广阔的发展空间,能更进一步地提高制品各种性能、制造成本,并拓宽应用领域。 相似文献
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塑料模压成型技术(一) 总被引:1,自引:1,他引:0
模压成型是古老的聚合物加工技术之一。阐述了模压成型的发展历程及现状,分析了其成型过程的五个阶段及成型原理,并与注塑和传递成型等方法相比,分析了模压成型的优缺点。 相似文献
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增韧尼龙织布梭成型工艺探讨 总被引:1,自引:0,他引:1
王明福 《现代塑料加工应用》2002,14(2):25-27
阐述了增韧尼龙织布梭的注射成型工艺及调湿处理工艺,分析了注塑过程中常见缺陷及其产生的原因,提出了解决问题的对策以及成型中的注意事项。 相似文献
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In this work, micro‐composite materials were produced by incorporating 3‐mm long reclaimed short carbon fibers into bio‐based nylon 11 via melt compounding. A systematic fiber length distribution analysis was performed after the masterbatching, compounding and an injection moulding processes using optical microscopy images. It was found that the large majority of the fibers were within the 200–300 μm in length range after the injection moulding process. The mechanical (flexural and tensile), thermo‐mechanical, and creep properties of the injection moulded materials are reported. We found that an enhancement in flexural and Young's modulus of 25% and 14%, respectively, could be attained with 2 wt% carbon fiber loading whilst no significant drawback on the ductility and toughness of the matrix was observed. The creep resistance and recovery of the nylon 11, tested using dynamic mechanical thermal analysis at room temperature and 65°C, was significantly improved by up to 30% and 14%, respectively, after loading with carbon fiber. This work provides an insight into the property improvement of the bio‐based polymer nylon 11 using a small amount of a reclaimed engineered material. POLYM. COMPOS., 36:668–674, 2015. © 2014 Society of Plastics Engineers 相似文献
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微孔注塑成型研究进展 总被引:3,自引:0,他引:3
阐述了微孔发泡成型的基本原理,综述了注射速度、注射量、模具温度、熔体温度等加工参数对微孔注塑成型的影响,介绍了常见的微孔注塑成型设备,并对微孔注塑成型的发展前景进行了展望。 相似文献
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The effects of electron beam irradiation on the morphology, mechanical properties and heat and hot oil resistance of a thermoplastic elastomeric blend of 50/50 nylon 6 and HNBR rubber were investigated. The morphology of the blend was studied by scanning electron microscopy, with special reference to the effects of processing via injection moulding and the radiation dose. Irradiation of extruded pellets at low doses and subsequent injection moulding improved the blend morphology, thereby enhancing the mechanical properties. The tensile strength of the blend increased with radiation dose. The irradiated blends had excellent hot oil resistance and the tensile strength of the blends did not change much after ageing at 150 °C for 72 h. Incorporation of 10 phr SRF black to the blend greatly improved the tension set property. Copyright © 2005 Society of Chemical Industry 相似文献
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注塑级PVC/ABS合金的性能及其加工 总被引:3,自引:2,他引:3
阐述了注塑用聚氯乙烯/丙烯腈-丁二烯-苯乙烯共聚物(PVC/ABS)合金的制备工艺以及合金组成与冲击强度和屈服应力的关系,分析了影响注塑工艺条件的因素,并对体系的热稳定性和流变特性及其影响因素也作了简要的论述。 相似文献
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用A171和KH550 2种硅烷偶联剂对纳米SiO2进行分散处理,然后用注射成型法制备了纳米SiO2/尼龙1010复合材料。研究了改性处理纳米SiO2对尼龙1010复合材料的结晶性能、力学性能以及摩擦学性能的影响。结果表明:纳米SiO2表面的改性处理均使尼龙1010基体的结晶度降低,而拉伸强度、硬度和耐磨性提高。A171处理纳米SiO2/尼龙1010复合材料的断裂伸长率大于纯尼龙1010。改性处理纳米SiO2使尼龙1010复合材料的摩擦因数降低。 相似文献
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Neuere Entwicklungen bei Härtbaren Formmassen. Werkstoffe – Anwendungen – Verarbeitungs-Technologien
New developments in thermosetting moulding compounds – Materials – Applications – Processing technology . Thermosetting moulding compounds are defined as raw materials manufacturing plastic parts under the influence of pressure and heat, mainly by compression, transfer and injection moulding which are formulated in workable form from thermosetting reactive resins, fillers, reinforcers, and other additives. The present article will consider only moulding compounds in granular form whose processing to moulded parts is mainly automated and which represent a group of plastics clearly distinct from pasty or liquid thermosetting moulding materials. 相似文献
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介绍了消除厚壁制件所出现的缩痕、凹痕缺陷的一种新型塑料成型工艺--气体辅助注射成型技术的工作原理,技术关键、设备配置及其应用,并重点介绍了内置气体辅助成型和表面气体辅助成型技术。 相似文献