東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

The Flame Retardant, Mechanical Prop...

Li, Jie.

Linked to FindBook

Google Book

Amazon

博客來

The Flame Retardant, Mechanical Properties and Thermal Conductivity of Polymer Nanocomposites.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The Flame Retardant, Mechanical Properties and Thermal Conductivity of Polymer Nanocomposites./
Author:	Li, Jie.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	52 p.
Notes:	Source: Masters Abstracts International, Volume: 56-06.
Contained By:	Masters Abstracts International56-06(E).
Subject:	Materials science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10266362
ISBN:	9780355203264

The Flame Retardant, Mechanical Properties and Thermal Conductivity of Polymer Nanocomposites.
Li, Jie.

The Flame Retardant, Mechanical Properties and Thermal Conductivity of Polymer Nanocomposites. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 52 p.

Source: Masters Abstracts International, Volume: 56-06.

Thesis (M.S.)--State University of New York at Stony Brook, 2017.

Nanoparticles are great additives to the flame retardant and thermal properties of the polymers, however, they generally have some disadvantages on the mechanical properties. The mixing of polymers and nano-fillers such as Cloisite clays, melamine polyphosphate, molybdenum disulfide and graphene are mostly physical reactions between them and do not have chemical reactions during blending. And well dispersion is necessary to increase the conductive pathways, meanwhile, to reduce the loss of mechanical properties. Some of them are used for enhancing the self-extinguishment of PLA, which can form charring layer covered on the surface of samples to hinder the burning process. Generally, the better the nano-fillers disperse in the polymer matrix, the easier the material will intumesce and form charring layer during combustion, and on the other hand, the lower loss of mechanical properties the composite has. Besides, graphene is always applied to improve the thermal conductivity of polymers because of its excellent thermal conductivity. And the mechanism of how to enhance this physical property has been discovered in the whole research. In this study, we focused on the most popular polymers like polypropylene (PP), polystyrene (PS), polylactic acid (PLA) and poly (methyl methacrylate) (PMMA). And the nanoparticles we used are Closites clays, melamine polyphosphate (MPP), molybdenum disulfide (MoS2), graphene (GNPs), Ce-RDP and C-RDP. The last two particles were general additives cellulose and Closites clay sodium coated by RDP, respectively. We successfully obtained some blending materials which have excellent flame retardancy, however, the mechanical properties like impact and tensile had reduced more or less tested by Izod impact tests and tensile testing. In this paper, we also determined that graphene played an important role in improving the thermal conductivity of PP, PS and their immiscible blending with other polymers. And there were many factors like the degree of crystallinity of polymer matrices, the similarity of polarization between graphene and polymers, the mixing time and temperature, affect the rate of thermal conductivity enhancement to some extent.

ISBN: 9780355203264Subjects--Topical Terms:

543314
Materials science.

The Flame Retardant, Mechanical Properties and Thermal Conductivity of Polymer Nanocomposites.
LDR:03143nmm a2200289 4500 001 2159612
005 20180703084422.5
008 190424s2017 ||||||||||||||||| ||eng d
020 $a 9780355203264
035 $a (MiAaPQ)AAI10266362
035 $a (MiAaPQ)grad.sunysb:13220
035 $a AAI10266362
040 $a MiAaPQ $c MiAaPQ
100 1 $a Li, Jie. $3 1267636
245 1 4 $a The Flame Retardant, Mechanical Properties and Thermal Conductivity of Polymer Nanocomposites.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2017
300 $a 52 p.
500 $a Source: Masters Abstracts International, Volume: 56-06.
500 $a Adviser: Miriam Rafailovich.
502 $a Thesis (M.S.)--State University of New York at Stony Brook, 2017.
520 $a Nanoparticles are great additives to the flame retardant and thermal properties of the polymers, however, they generally have some disadvantages on the mechanical properties. The mixing of polymers and nano-fillers such as Cloisite clays, melamine polyphosphate, molybdenum disulfide and graphene are mostly physical reactions between them and do not have chemical reactions during blending. And well dispersion is necessary to increase the conductive pathways, meanwhile, to reduce the loss of mechanical properties. Some of them are used for enhancing the self-extinguishment of PLA, which can form charring layer covered on the surface of samples to hinder the burning process. Generally, the better the nano-fillers disperse in the polymer matrix, the easier the material will intumesce and form charring layer during combustion, and on the other hand, the lower loss of mechanical properties the composite has. Besides, graphene is always applied to improve the thermal conductivity of polymers because of its excellent thermal conductivity. And the mechanism of how to enhance this physical property has been discovered in the whole research. In this study, we focused on the most popular polymers like polypropylene (PP), polystyrene (PS), polylactic acid (PLA) and poly (methyl methacrylate) (PMMA). And the nanoparticles we used are Closites clays, melamine polyphosphate (MPP), molybdenum disulfide (MoS2), graphene (GNPs), Ce-RDP and C-RDP. The last two particles were general additives cellulose and Closites clay sodium coated by RDP, respectively. We successfully obtained some blending materials which have excellent flame retardancy, however, the mechanical properties like impact and tensile had reduced more or less tested by Izod impact tests and tensile testing. In this paper, we also determined that graphene played an important role in improving the thermal conductivity of PP, PS and their immiscible blending with other polymers. And there were many factors like the degree of crystallinity of polymer matrices, the similarity of polarization between graphene and polymers, the mixing time and temperature, affect the rate of thermal conductivity enhancement to some extent.
590 $a School code: 0771.
650 4 $a Materials science. $3 543314
690 $a 0794
710 2 $a State University of New York at Stony Brook. $b Materials Science and Engineering. $3 1680561
773 0 $t Masters Abstracts International $g 56-06(E).
790 $a 0771
791 $a M.S.
792 $a 2017
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10266362