Influences of complex curing reagents on mechanical properties of PBT matrix

Jin Xian Zhai; Rong Jie Yang; Hou Lang Liu; Zi Ping Wu

Influences of complex curing reagents on mechanical properties of PBT matrix

Jin Xian Zhai^*, Rong Jie Yang, Hou Lang Liu, Zi Ping Wu

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

In order to improve the mechanical properties of composite PBT (BAMO-THF, bis-azidomethyl oxetane and tetrahydrofuran copolyether ) propellants, the effect of content ratio of complex curing reagents, polyisocyanate NlOO and 2,4-diisocyanatotoluene (TDI), on PBT matrix was investigated. Theoretical calculation indicated that with the content of TDI increasing, network chain densities decrease from 8. 15× 10^-5mmol/cm³to 3. 29 × 10^-5mmol/cm³ and number-average molecular weights increase from 5 639 to 14 089. Uniaxial elongation measurements showed that the stresses of the matrixes exist a peak value of 0. 061MPa though the strains increase gradually from 99% to 273% with the increase in TDI content. Rheological measurements indicated that the matrix simultaneously possesses a higher stress and strain due to the formation of bimodal networks, as TDI and N100 are added in mass ratio of 1. 608: 0. 491.

Original language	English
Pages (from-to)	31-34
Number of pages	4
Journal	Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Volume	32
Issue number	6
Publication status	Published - 2009

Keywords

BAMO-THF copolyether
Bimodal networks
Curing reagent
Mechanical properties
Physical chemistry

Cite this

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title = "Influences of complex curing reagents on mechanical properties of PBT matrix",

abstract = "In order to improve the mechanical properties of composite PBT (BAMO-THF, bis-azidomethyl oxetane and tetrahydrofuran copolyether ) propellants, the effect of content ratio of complex curing reagents, polyisocyanate NlOO and 2,4-diisocyanatotoluene (TDI), on PBT matrix was investigated. Theoretical calculation indicated that with the content of TDI increasing, network chain densities decrease from 8. 15× 10-5mmol/cm3to 3. 29 × 10-5mmol/cm3 and number-average molecular weights increase from 5 639 to 14 089. Uniaxial elongation measurements showed that the stresses of the matrixes exist a peak value of 0. 061MPa though the strains increase gradually from 99% to 273% with the increase in TDI content. Rheological measurements indicated that the matrix simultaneously possesses a higher stress and strain due to the formation of bimodal networks, as TDI and N100 are added in mass ratio of 1. 608: 0. 491.",

keywords = "BAMO-THF copolyether, Bimodal networks, Curing reagent, Mechanical properties, Physical chemistry",

author = "Zhai, {Jin Xian} and Yang, {Rong Jie} and Liu, {Hou Lang} and Wu, {Zi Ping}",

year = "2009",

language = "English",

volume = "32",

pages = "31--34",

journal = "Huozhayao Xuebao/Chinese Journal of Explosives and Propellants",

issn = "1007-7812",

publisher = "China Ordnance Industry Corporation",

number = "6",

}

TY - JOUR

T1 - Influences of complex curing reagents on mechanical properties of PBT matrix

AU - Zhai, Jin Xian

AU - Yang, Rong Jie

AU - Liu, Hou Lang

AU - Wu, Zi Ping

PY - 2009

Y1 - 2009

N2 - In order to improve the mechanical properties of composite PBT (BAMO-THF, bis-azidomethyl oxetane and tetrahydrofuran copolyether ) propellants, the effect of content ratio of complex curing reagents, polyisocyanate NlOO and 2,4-diisocyanatotoluene (TDI), on PBT matrix was investigated. Theoretical calculation indicated that with the content of TDI increasing, network chain densities decrease from 8. 15× 10-5mmol/cm3to 3. 29 × 10-5mmol/cm3 and number-average molecular weights increase from 5 639 to 14 089. Uniaxial elongation measurements showed that the stresses of the matrixes exist a peak value of 0. 061MPa though the strains increase gradually from 99% to 273% with the increase in TDI content. Rheological measurements indicated that the matrix simultaneously possesses a higher stress and strain due to the formation of bimodal networks, as TDI and N100 are added in mass ratio of 1. 608: 0. 491.

AB - In order to improve the mechanical properties of composite PBT (BAMO-THF, bis-azidomethyl oxetane and tetrahydrofuran copolyether ) propellants, the effect of content ratio of complex curing reagents, polyisocyanate NlOO and 2,4-diisocyanatotoluene (TDI), on PBT matrix was investigated. Theoretical calculation indicated that with the content of TDI increasing, network chain densities decrease from 8. 15× 10-5mmol/cm3to 3. 29 × 10-5mmol/cm3 and number-average molecular weights increase from 5 639 to 14 089. Uniaxial elongation measurements showed that the stresses of the matrixes exist a peak value of 0. 061MPa though the strains increase gradually from 99% to 273% with the increase in TDI content. Rheological measurements indicated that the matrix simultaneously possesses a higher stress and strain due to the formation of bimodal networks, as TDI and N100 are added in mass ratio of 1. 608: 0. 491.

KW - BAMO-THF copolyether

KW - Bimodal networks

KW - Curing reagent

KW - Mechanical properties

KW - Physical chemistry

UR - http://www.scopus.com/inward/record.url?scp=77950232505&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:77950232505

SN - 1007-7812

VL - 32

SP - 31

EP - 34

JO - Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

JF - Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

IS - 6

ER -

Influences of complex curing reagents on mechanical properties of PBT matrix

Abstract

Keywords

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