Properties of thermoplastic polyurethane elastomers extended with BDO and DBM

Wen Yu Zhang; Jin Qing Li; Yun Jun Luo; Xiao Meng Li; Yong Bin Jiu

doi:10.3969/j.issn.1006-9941.2012.01.012

Properties of thermoplastic polyurethane elastomers extended with BDO and DBM

Wen Yu Zhang, Jin Qing Li, Yun Jun Luo^*, Xiao Meng Li, Yong Bin Jiu

^*Corresponding author for this work

School of Material Science and Engineering

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

2 Citations (Scopus)

Abstract

A series of thermoplastic polyurethane elastomers(TPUEs) with bonding function which can be used as propellant binders were synthesized from polyethylene/polypropylene adipate diol(PEPA), tetrahydrofuran/ethylene oxide copolyether(PET), isophorone diisocyanate(IPDI), 1, 4-butanediol (BDO) and diethyl bis(hydroxymethyl) malonate(DBM) as primary substances by melt pre-polymerization method. Then Fourier transform infrared spectroscopic(FTIR), gel permeation in chromatography(GPC), differential scanning calorimetry(DSC) and tensile test techniques were employed to characterize the structures and properties of TPUEs. Results show that the microphase segregation of TPUEs become more obvious with the BDO content in chain extenders increasing. When the molar content of BDO exceeds 50% in chain extender, the glass transition temperature of soft segment become lower than -70°C. It is also observed that tensile strength of the TPUE increased with the BDO content increasing, while the elongation to break decreased. TPUEs extended with mixed diols have better effect than that extended with BDO or DBM to improve the mechnical properties of modified double-based propellant.

Original language	English
Pages (from-to)	49-52
Number of pages	4
Journal	Hanneng Cailiao/Chinese Journal of Energetic Materials
Volume	20
Issue number	1
DOIs	https://doi.org/10.3969/j.issn.1006-9941.2012.01.012
Publication status	Published - Feb 2012

Keywords

Chain extender
Mechanical property
Modified double-based propellant
Polymer materials
Thermoplastic polyurethane

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10.3969/j.issn.1006-9941.2012.01.012

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title = "Properties of thermoplastic polyurethane elastomers extended with BDO and DBM",

abstract = "A series of thermoplastic polyurethane elastomers(TPUEs) with bonding function which can be used as propellant binders were synthesized from polyethylene/polypropylene adipate diol(PEPA), tetrahydrofuran/ethylene oxide copolyether(PET), isophorone diisocyanate(IPDI), 1, 4-butanediol (BDO) and diethyl bis(hydroxymethyl) malonate(DBM) as primary substances by melt pre-polymerization method. Then Fourier transform infrared spectroscopic(FTIR), gel permeation in chromatography(GPC), differential scanning calorimetry(DSC) and tensile test techniques were employed to characterize the structures and properties of TPUEs. Results show that the microphase segregation of TPUEs become more obvious with the BDO content in chain extenders increasing. When the molar content of BDO exceeds 50% in chain extender, the glass transition temperature of soft segment become lower than -70°C. It is also observed that tensile strength of the TPUE increased with the BDO content increasing, while the elongation to break decreased. TPUEs extended with mixed diols have better effect than that extended with BDO or DBM to improve the mechnical properties of modified double-based propellant.",

keywords = "Chain extender, Mechanical property, Modified double-based propellant, Polymer materials, Thermoplastic polyurethane",

author = "Zhang, {Wen Yu} and Li, {Jin Qing} and Luo, {Yun Jun} and Li, {Xiao Meng} and Jiu, {Yong Bin}",

year = "2012",

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doi = "10.3969/j.issn.1006-9941.2012.01.012",

language = "English",

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AU - Zhang, Wen Yu

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AU - Luo, Yun Jun

AU - Li, Xiao Meng

AU - Jiu, Yong Bin

PY - 2012/2

Y1 - 2012/2

N2 - A series of thermoplastic polyurethane elastomers(TPUEs) with bonding function which can be used as propellant binders were synthesized from polyethylene/polypropylene adipate diol(PEPA), tetrahydrofuran/ethylene oxide copolyether(PET), isophorone diisocyanate(IPDI), 1, 4-butanediol (BDO) and diethyl bis(hydroxymethyl) malonate(DBM) as primary substances by melt pre-polymerization method. Then Fourier transform infrared spectroscopic(FTIR), gel permeation in chromatography(GPC), differential scanning calorimetry(DSC) and tensile test techniques were employed to characterize the structures and properties of TPUEs. Results show that the microphase segregation of TPUEs become more obvious with the BDO content in chain extenders increasing. When the molar content of BDO exceeds 50% in chain extender, the glass transition temperature of soft segment become lower than -70°C. It is also observed that tensile strength of the TPUE increased with the BDO content increasing, while the elongation to break decreased. TPUEs extended with mixed diols have better effect than that extended with BDO or DBM to improve the mechnical properties of modified double-based propellant.

AB - A series of thermoplastic polyurethane elastomers(TPUEs) with bonding function which can be used as propellant binders were synthesized from polyethylene/polypropylene adipate diol(PEPA), tetrahydrofuran/ethylene oxide copolyether(PET), isophorone diisocyanate(IPDI), 1, 4-butanediol (BDO) and diethyl bis(hydroxymethyl) malonate(DBM) as primary substances by melt pre-polymerization method. Then Fourier transform infrared spectroscopic(FTIR), gel permeation in chromatography(GPC), differential scanning calorimetry(DSC) and tensile test techniques were employed to characterize the structures and properties of TPUEs. Results show that the microphase segregation of TPUEs become more obvious with the BDO content in chain extenders increasing. When the molar content of BDO exceeds 50% in chain extender, the glass transition temperature of soft segment become lower than -70°C. It is also observed that tensile strength of the TPUE increased with the BDO content increasing, while the elongation to break decreased. TPUEs extended with mixed diols have better effect than that extended with BDO or DBM to improve the mechnical properties of modified double-based propellant.

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Properties of thermoplastic polyurethane elastomers extended with BDO and DBM

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