Embrittlement of polybutylene terephthalate induced by injection molding

被引：2

作者：

Loyer, C. ^{[1
,2
]}

Ferreira, P. ^{[1
]}

Marijon, J-B ^{[1
]}

Michel, V ^{[1
]}

Regnier, G. ^{[1
]}

Vera, J. ^{[2
]}

Duval, V ^{[2
]}

Richaud, E. ^{[1
]}

机构：

[1] HESAM Univ, PIMM Lab, Arts & Metiers Inst Technol, CNRS,Cnam, 151 Blvd Hop, F-75013 Paris, France

[2] APTIV, F-28230 Epernon, France

来源：

POLYMER DEGRADATION AND STABILITY | 2022年 / 196卷

关键词：

Injection molding; Processing window; Embrittlement; Degradation; Kinetic modeling; PBT; SOLID-STATE POLYCONDENSATION; POLY(BUTYLENE TEREPHTHALATE); MECHANICAL-PROPERTIES; THERMAL-DEGRADATION; SEMICRYSTALLINE POLYMERS; KINETICS; TEMPERATURE; MORPHOLOGY; PYROLYSIS; FRACTURE;

D O I：

10.1016/j.polymdegradstab.2022.109843

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Embrittlement caused by injection molding was investigated on a commercial grade of Polybutylene terephthalate (PBT). The effect of temperature and residence time in the barrel on mechanical properties was studied. Results were discussed from macromolecular analysis by Gel Permeation Chromatography and crystallinity measurements by differential scanning calorimetry. It was shown that embrittlement exclusively occurs by a chain scission process in those conditions. Oxygen is shown to play a negligible role in degradation while thermolysis seems to be the main source of degradation. It was here described by a first simple kinetic model based on the beta abstraction of hydrogen at the vicinity of ester groups. A processing window was thus determined using this model and might help practitioners for processing PBT parts. (C) 2022 Elsevier Ltd. All rights reserved.

引用

页数：10

共 46 条

[11] The effect of injection molding process parameters on mechanical and fracture behavior of polycarbonate polymer
Dar, Uzair Ahmed
Xu, Ying Jie
Zakir, Sheikh Muhammad
Saeed, Muhammad-Umar
[J]. JOURNAL OF APPLIED POLYMER SCIENCE, 2017, 134 (07)
[12] Reaction kinetics of polybutylene terephthalate polycondensation reaction
Darda, PJ
Hogendoorn, JA
Versteeg, GF
Souren, F
[J]. AICHE JOURNAL, 2005, 51 (02) : 622 - 630
[13] Nonisothermal crystallization kinetics and melting behavior of poly(butylene terephthalate) (PBT) composites based on different types of functional fillers
Deshmukh, G. S.
Peshwe, D. R.
Pathak, S. U.
Ekhe, J. D.
[J]. THERMOCHIMICA ACTA, 2014, 581 : 41 - 53
[14] The effects of extrusion parameters and blend composition on the mechanical, rheological and thermal properties of LDPE/PS/PMMA ternary polymer blends
Ding, Y.
Abeykoon, C.
Perera, Yasith S.
[J]. ADVANCES IN INDUSTRIAL AND MANUFACTURING ENGINEERING, 2022, 4
[15] Redesign of the Geometry of Parts Produced from PBT Composite to Improve Their Operational Behavior
Dobrota, Dan
Lazar, Sergiu Viorel
[J]. POLYMERS, 2021, 13 (15)
[16] Pyrolysis of synthetic polymers and plastic wastes.: Kinetic study
Encinar, J. M.
Gonzalez, J. F.
[J]. FUEL PROCESSING TECHNOLOGY, 2008, 89 (07) : 678 - 686
[17] Injection molding. Influence of process parameters on mechanical properties of polypropylene polymer. A first study
Farotti, E.
Natalini, M.
[J]. AIAS2017 - 46TH CONFERENCE ON STRESS ANALYSIS AND MECHANICAL ENGINEERING DESIGN, 2018, 8 : 256 - 264
[18] The effects of the injection moulding temperature on the mechanical properties and morphology of polypropylene man-made cellulose fibre composites
Feldmann, M.
[J]. COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2016, 87 : 146 - 152
[19] SOLID-STATE POLYCONDENSATION OF POLY(BUTYLENE TEREPHTHALATE)
FORTUNATO, B
PILATI, F
MANARESI, P
[J]. POLYMER, 1981, 22 (05) : 655 - 657
[20] Determination of the equilibrium enthalpy of melting of two-phase semi-crystalline polymers by fast scanning calorimetry
Fosse, Clement
Bourdet, Aurelie
Ernault, Esteve
Esposito, Antonella
Delpouve, Nicolas
Delbreilh, Laurent
Thiyagarajan, Shanmugam
Knoop, Rutger J. I.
Dargent, Eric
[J]. THERMOCHIMICA ACTA, 2019, 677 : 67 - 78

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