Details
| Original language | English |
|---|---|
| Pages (from-to) | 1669-1677 |
| Number of pages | 9 |
| Journal | Journal of applied polymer science |
| Volume | 129 |
| Issue number | 4 |
| Early online date | 18 Dec 2012 |
| Publication status | Published - 15 Aug 2013 |
Abstract
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.
Keywords
- applications, composites, degradation, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA)
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Materials Science(all)
- Surfaces, Coatings and Films
- Materials Science(all)
- Polymers and Plastics
- Materials Science(all)
- Materials Chemistry
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In: Journal of applied polymer science, Vol. 129, No. 4, 15.08.2013, p. 1669-1677.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Processing and characterization of injection moldable polymer-particle composites applicable in brazing processes
AU - Kirchberg, Stefan
AU - Holländer, Ulrich
AU - Möhwald, Kai
AU - Ziegmann, Gerhard
AU - Bach, Friedrich Wilhelm
PY - 2013/8/15
Y1 - 2013/8/15
N2 - 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.
AB - 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.
KW - applications
KW - composites
KW - degradation
KW - differential scanning calorimetry (DSC)
KW - thermogravimetric analysis (TGA)
UR - http://www.scopus.com/inward/record.url?scp=84878013270&partnerID=8YFLogxK
U2 - 10.1002/app.38862
DO - 10.1002/app.38862
M3 - Article
AN - SCOPUS:84878013270
VL - 129
SP - 1669
EP - 1677
JO - Journal of applied polymer science
JF - Journal of applied polymer science
SN - 0021-8995
IS - 4
ER -