Processing and characterization of injection moldable polymer–particle composites applicable in brazing processes

Processing and characterization of injection moldable polymer–particle composites applicable in brazing processes
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适用于钎焊工艺的注射成型聚合物颗粒复合材料的加工和表征

DOI:
10.1002/app.38862
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发表时间:
2013
影响因子:
3
通讯作者:
Ziegmann
Ziegmann
中科院分区:
化学3区
文献类型:
--
作者:
Kirchberg;Holländer;Möhwald;Ziegmann

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一种新的方法已被开发来处理高度填充的聚合物颗粒复合材料测试样品作为钎焊金属预制件。聚丙烯(PP)、低密度聚乙烯(LD-PE)和高密度聚乙烯(HD-PE)用作聚合物基质。将两种类型的镍基钎焊金属微粒(Ni 102和EXP 152)以高达65体积%的填料含量配混到聚合物基质中。随着填料含量的增加,粘度的增加对混炼转子转矩和注塑工艺参数有显著影响。注塑成型复合材料显示出均匀分布的球形微粒和颗粒-颗粒相互作用。聚合物在高于550°C的温度下分解无残留物,即使是其复合材料。添加颗粒降低了聚合物结晶度,而与注射成型之前的未定义冷却相比,以5°C/min的定义冷却显著增加了聚合物的结晶度和熔融峰温度。聚合物的储能模量显着增加,通过添加填料颗粒。LD‐PE + 65体积% EXP 152显示出最合适的复合材料性能。© 2012 Wiley Periodicals,Inc. J.应用聚合物科学,2013
A novel method has been developed to process highly filled polymer–particle composites to test samples as braze metal preforms. Polypropylene (PP), low‐density polyethylene (LD‐PE) and high‐density polyethylene (HD‐PE) were used as polymer matrices. Two types of nickel‐based braze metal microparticles (Ni 102 and EXP 152) were compounded to the polymer matrices at filler contents up to 65 vol %. With enhancing filler content, torque at kneading rotors, and injection molding parameter were significantly affected by increasing viscosity. Injection molded composites show well‐distributed spherical microparticles and particle–particle interactions. Polymers decompose residue‐free at temperatures above 550°C, even for their composites. Adding particles reduces polymer crystallinity, whereas defined cooling at 5°C/min significantly increases the crystallinity and melt peak temperature of polymers compared to undefined cooling prior injection molding. Storage modulus of polymers increases significantly by adding filler particles. LD‐PE + 65 vol % EXP 152 show the most suitable composite performance. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
聚合物纳米复合材料的应用
DOI: 10.3139/9783446418523.007
发表时间: 2008
影响因子: 3
作者:
S. Bhattacharya;M. Kamal;Rahul K Gupta
通讯作者: Rahul K Gupta
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DOI: --
发表时间: 2011
期刊:
影响因子: --
作者:
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通讯作者: Christian Roxlau
DOI: --
发表时间: 2009
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作者:
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