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国内外滚塑工艺发展概况 总被引:1,自引:0,他引:1
中国塑协滚塑专业委员会筹备组 《国外塑料》2004,22(12):34-36
1 引言。塑料及其复合材料的加工成型工艺有很多种,除了我们常见的挤出成型、注射成型,吹塑成型等工艺外,滚塑也是塑料制品的一种加工方法。过去,由于各种因素,如较慢的加工周期及所用材料的限制,使滚塑工艺发展速度低于其他塑料成型加工行业。在各类有关塑料加工成型的资料信息中涉及到滚塑成型的资讯寥寥无几。在世界十大图书馆之一的上海图书馆,输入主题词“滚塑”, 相似文献
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滚塑成型是塑料加工工艺的一个分支,近几年来,全球滚塑行业的发展很快,其发展速度高于整个塑料行业的平均发展速度,越来越受到塑料加工商的青睐,应用领域不断拓展。滚塑成型是塑料加工工艺的一个分支,与其他塑料加工工艺相比,具有设备投资少、模具成本低、产品设计形式灵活多样、可一体化成型等优势。近 相似文献
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Joseph A.Grande 《现代塑料》2007,(5):80-80
为了增强涂料.胶粘剂或者发泡聚氨酯的粘合性能,一种新的等离子技术被用以处理粒料和粉料,这一新的RTS技术出自于Lectro工程公司。据报道,该技术已经被证明能够有效地改善滚塑粉料,以及PE.PP和TPO注塑成型粒料的加工性能。[编者按] 相似文献
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加热时间对滚塑制品性能的影响 总被引:1,自引:0,他引:1
《塑料科技》2017,(2):55-58
使用滚塑级线型低密度聚乙烯(LLDPE)粉末,研究了加热时间对滚塑制品性能的影响。结果表明:在滚塑成型工艺中,存在最佳加工温度区间,且该区间位于凝结段;对于滚塑制品的断裂伸长应变和弯曲模量,在消泡段存在"加热陷阱",应尽量避免在这一温度区间进行加工。 相似文献
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We present a validation study comparing the mold wall temperature estimates from an axisymmetric thermal finite element simulation of the rotational molding process with temperature data obtained during experiments conducted on industrial‐grade rotational molding equipment. The finite element model simulates the heat transfer processes involved in rotational molding through the end of powder deposition, and uses an Arbitrary Lagrangian Eulerian technique to track the growing molten plastic layer. The experiments were conducted with nine different operating conditions on a single axisymmetric mold shape. The simulation results for mold wall temperature agreed well with the experimental data under all of the conditions tested. 相似文献
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随着滚塑工艺的成熟发展,特别是在滚塑钢衬塑储罐以及化工防腐设备等领域的应用非常广泛,并具有强力的市场需求。这一技术的应用凸显了它的工艺结构、特点、原材料、生产设备等方面的独特优势,对产品性能、质量的稳定有了很大提高。本论文以滚塑成型工艺技术在钢衬塑产品方面的应用为分析对象,在理论与实践的基础上,对滚塑钢衬塑工艺技术、特点、原材料、成型设备、衬塑方案以及常见问题的解决方法,逐一进行了论述和总结,可为相近类型企业生产提供参考。 相似文献
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Our study is focused on the investigation of polyamide 12 (PA 12) grade behavior in rotational molding process. Hence, some rotational molding tests of polyamide 12 were conducted on a STP LAB 40 machine. To simulate the cooling stage within the rotational molding, the crystallization behavior of polyamide 12 was studied using differential scanning calorimetry technique and the obtained results for non-isothermal crystallization were fitted with Ozawa model. Furthermore, morphology survey has been carried out by a hot stage method using a microscope to investigate the spherulites evolution which depends on the temperature. The micro-tensile properties have been studied using micro-tensile bench (MVTV2) to explain the mechanical behavior of polyamide 12 during crystallization. As a result, the rotational molding of PA 12 was successfully carried out. The simulation of the melting and crystallization stages, by application of Ozawa model coupled with enthalpy method gave a good representation of experimental data on one hand. On the other hand, all characterization revealed useful information to understand the different phenomena that govern the rotational molding process. 相似文献
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