PPTA

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Mechanical Property and Crystal Structure of Poly(p-phenylene terephthalamide)(PPTA) Fibers during Heat Treatment under Tension
《Journal of Donghua University(English Edition)》2015年第1期1-6,共6页严冬东 陈蕾 曹煜彤 鲁超风 于俊荣 刘兆峰 诸静 王彦 胡祖明 
National Basic Research Program of China(973 Program)(No.2011CB606103);National High-Tech Research and Development Program of China(863 Program)(No.2012AA03212);the Fundamental Research Funds for the Central Universities,China(No.11D10625)
The relationship between property and structure of poly( p-phenylene terephthalamide)( PPTA) was investigated for the purpose of obtaining products with better performance. PPTA fiber subjected to heat treatment under...
关键词：poly(p-phenylene terephthalamide)(PPTA) fibers heat treatment crystal structure crystal orientation mechanical properties 
Effect of Added Poly (vinyl pyrrolidone) during Condensation on Properties of Poly(p-phenylene terephthalamide)Pulp被引量：1
《Journal of Donghua University(English Edition)》2009年第2期147-153,共7页李锦春 尤秀兰 曹煜彤 刘兆峰 
Poly(p-phenylene terephthalamide)(PPTA)pulp was prepared by polycondensation of the p-phenylene diamine(PPDA)with terephthaloyl chloride(TPC)in the completely anhydrous solvent system of N-methyl pyrrolidone(NMP)havin...
关键词：poly （ p-phenylene terephthalamide ） pulp PPTA pulp ） poly （vinyl pyrrolidone ） （ PVP ） POLYCONDENSATION friction material 
Pyrolysis Process in Aramid Fibers Investigated by Py-GC/MS & TGA-DTA/MS被引量：1
《Journal of Donghua University(English Edition)》2007年第3期367-374,380,共9页王新威 胡祖明 刘兆峰 
Poly （ m-phenylene isophthalamine） （PMIA） and Poly（ p-phenylene terphthalamine） （PPTA） are among the most important high-temperature resistant aramid fibers. The pyrolysis behaviors of these two fibers under i...
关键词：PYROLYSIS PMIA PPTA MS HYDROLYSIS homol ysis 
Modification of PPTA by Adding N,N'-piperazineydiamme
《Journal of Donghua University(English Edition)》2001年第3期100-103,共4页钦维民 顾润南 黄象安 肖若鉴 
High viscous PPTA copolymer is prepared by low temperature solution copolycondensation of terephth-aloylchloride, p-phenylenediamine and p, p'-diamino-phenylpiperazine in the NMP-CaCl2 solvent system. The inherent vis...
关键词：poly-p-phenylene terephthalamide dissolubility HEAT-RESISTANT P p'-diaminophenylpiperazine copolycond-ensation. 
A STUDY OF THE MORPHOLOGY OF POLY(1,4 PHENYLEN TEREPHATHALAMIDE) (PPTA) PULP
《Journal of China Textile University(English Edition)》1991年第2期62-67,共6页王曙中 宣亮 王文强 肖若鉴 胡家伦 
The morphology of PPTA pulp is investigated by means of optical microscope and scanningelectron microscope (SEM). It shows that PPTA pulp has feather-like branch, needle point-likeend, and irregular cross-section, whi...
关键词：poly-p-phenylene terephthal AMIDE fibre filling material fibreillion MORPHOLOGY PPTA-pulp 
STUDY OF MODIFIED AROMATIC POLYAMIDE SYNTHESIS AND CHARACTERISTICS OF CHLORINATED PPTA
《Journal of China Textile University(English Edition)》1989年第1期33-39,共7页肖若鉴 王曙忠 屈风珍 
Super pure 2,5-dichloroterephthaloyl dichloride (DDC) was prepared by chlorination andcontrolled by Gas Chromatography(GC) method. As a third monomer, DDC waspolycondensated into chlorinated PPTA together with terepht...
关键词：modification (of polymer) AROMATIC POLYAMIDE LIQUID CRYSTAL fire resistance self-extinguishment chlorinated PPTA 2 5-dichloroterephthaloyl dichloride LIQUID CRYSTAL MODIFIED AROMATIC POLYAMIDE 
AN INVESTIGATION OF THE BENDING FATIGUE OF MODIFIED PPTA FIBRE
《Journal of Donghua University(English Edition)》1989年第Z1期29-36,共8页周承元 
PPTA fibres have high axial tensile strength,but the transverse links at the macromolecularlevel of the fibres are low.The high orientation and crystallization of the PPTA fibres leads to alow resistance to bending fa...
关键词：bending FATIGUE MODIFIED FIBRE FATIGUE life RUPTURE FISSURE crack MODIFIED PPTA fibre. 
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