Study of the relationship between characteristics of aramid fibrids and mechanical property of aramid paper using DSC

Autor:	Lizheng Sha, Huifang Zhao, Yinbang Zhu
Rok vydání:	2014
Předmět:	Aramid Mechanical property Materials science Polymers and Plastics Polymer science General Chemical Engineering Molar mass distribution Physical and Theoretical Chemistry Composite material Glass transition
Zdroj:	e-Polymers. 14:139-144
ISSN:	1618-7229 2197-4586
DOI:	10.1515/epoly-2013-0063
Popis:	Fiber classification of aramid fibrids was carried out using a Bauer-McNett fiber classifier, and the molecular weight and thermal properties of different sizes of aramid fibrids were determined with viscometry and differential scanning calorimetry (DSC), respectively. Aramid handsheets were made from different sizes of aramid fibrids and aramid short fibers, and the relationship between mechanical strength of aramid handsheets and thermal properties of aramid fibrids was examined. In addition, aramid papers from four different sources were also investigated to elucidate the relationship between their thermal properties and mechanical strength. It was found that aramid fibrids passing through 30-mesh screens and remaining on 50-mesh screens and aramid fibrids with narrower molecular weight distribution are suitable for the production of high-strength aramid papers. Lower crystallinity and wider molecular weight distribution are important contributors to the lower mechanical strength of domestic aramid paper when compared to that of Nomex paper.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4cf2947a1d53c17d2dffb58b33b5f900 https://doi.org/10.1515/epoly-2013-0063 Zobrazit plný text záznamu