Excellent toughness of rigid polyvinylchloride at low temperature improved by polycarbonate‐polydimethylsiloxane block copolymer

Wang, Xiaofei; Yu, Jing; Zhang, Jun; Chen, Hao

doi:10.1002/app.53159

Cited by 8 publications

(6 citation statements)

References 35 publications

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“…It can be found that the value of E a is decreased from 109.6 kJ/mol of pure PC to 62.7, 64.6, 59.2, and 60.5 kJ/mol, indicating the enhancement of shear dependence of blends. 59 The reduced E a broadens the processing temperature window of the blends.…”

Section: Thermal Propertiesmentioning

confidence: 99%

Compatibilization of Polycarbonate/Silicon Rubber Blend with Styrene/Silicon Oil/Acrylonitrile Ternary Copolymer for Ultra-High Low-Temperature Toughness

Yang,

Zhang,

Zhu

et al. 2024

ACS Appl. Polym. Mater.

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The higher notch sensitivity of polycarbonate (PC) at low temperatures limits its application in some fields. In this work, a ternary copolymer P(St-SiO-An) composed of styrene (St), silicon oil (SiO), and acrylonitrile (An) was synthesized via a conventional radical copolymerization. Then, the compatibilities between PC/silicon rubber (Sr), PC/P(St-SiO-An), and P(St-SiO-An)/Sr were predicted through molecular dynamics simulation. By using P(St-SiO-An) as the effective compatibilizer, a series of PC/ Sr blends were prepared via the melt blending method. The mechanical, morphological, thermal, and rheological changes of the blends were investigated in detail. The molecular dynamics simulation showed that the compatibilities of PC/P(St-SiO-An) and P(St-SiO-An)/Sr pairs were significantly higher than those of the PC/Sr pair. P(St-SiO-An) ternary copolymer with a distinct chemical composition was synthesized successfully according to the results of Fourier transform infrared, 1H nuclear magnetic resonance, gel permeation chromatography, differential scanning calorimetry, and thermogravimetric analysis methods. Under the optimal composition of PC/Sr = 95/5 with 4 phr of P(St-SiO-An), a transition from brittle to superductile fracture was observed on the notched impact cross-section of the blend at −40 °C, and the notch impact strength reached 116.2 kJ/m 2 , which was more than 7 times that of 16.5 kJ/m 2 for pure PC with a 94.1% yield strength retention ratio at room temperature. Cavitation-matrix-forced high elastic deformation was the main toughening mechanism at low temperatures. Furthermore, the introduction of Sr and compatibilizer hardly affected the thermal performance of the PC, and the thermal stability and processability were enhanced. Compared with the SABIC EXL series commercial PC, the blend in this work shows great advantages in preparation methods and comprehensive properties, which are expected to further broaden the application of PC in the field of low-temperature resistance.

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Section: Thermal Propertiesmentioning

confidence: 99%

Compatibilization of Polycarbonate/Silicon Rubber Blend with Styrene/Silicon Oil/Acrylonitrile Ternary Copolymer for Ultra-High Low-Temperature Toughness

Yang,

Zhang,

Zhu

et al. 2024

ACS Appl. Polym. Mater.

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“…The main mechanical property of the PC thermoplastics is their resistance to fracture and impact [29]. PC materials are considered environmentally friendly materials which are suitable for 3D printing [20].…”

Section: Introductionmentioning

confidence: 99%

A Coherent Assessment of the Compressive Strain Rate Response of PC, PETG, PMMA, and TPU Thermoplastics in MEX Additive Manufacturing

Petousis,

Ntintakis,

David

et al. 2023

Polymers

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In this study, we successfully address a significant research and engineering gap by quantitatively assessing the impact of varying compressive loading rates on the mechanical behavior of four popular thermoplastic polymers in material-extrusion-based (MEX) 3D printing. Raw powders of polycarbonate (PC), polyethylene terephthalate glycol (PETG), polymethyl methacrylate (PMMA), and thermoplastic polyurethane (TPU) were processed through melt extrusion, and the filaments were used to 3D-print the test samples. For completeness, thermogravimetric analysis and a compressive test following the ASTM-D695 standard were conducted. Ultimately, the compressive strength and yield stress, the compressive modulus of elasticity and toughness, and the maximum compressive sensitivity index were thoroughly documented. Specimens were tested in strain rates from 1.3 mm/min to 200 mm/min. The compressive strength (40% for the PMMA) and stiffness (29% for the TPU) increased with the increase in the strain rate in all polymers tested. PC had the highest strain rate sensitivity. Significant variations in deformation and fracture modes were observed and thoroughly documented throughout this study. Our findings can be useful in industrial engineering as valued design optimization input parameters in various applications involving the above-mentioned polymeric materials.

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“…In previous work, the effect of polycarbonate‐polydimethylsiloxane block copolymer (PC‐ b ‐PDMS) dosage on the toughening effect of PVC at different temperatures was investigated 14 . It was found that even at −30°C, PC‐ b ‐PDMS also had a good toughening effect on PVC when 20 phr PC‐ b ‐PDMS was added.…”

Section: Introductionmentioning

confidence: 99%

Comparison of toughening effects of several common toughening agents and polycarbonate‐polydimethylsiloxane block copolymer on polyvinyl chloride

Wang

Zhang

Chen³

2023

Polymers for Advanced Techs

Self Cite

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In this work, different toughening agents such as chlorinated polyethylene (CPE), acrylonitrile–styrene‐acrylate (ASA) terpolymer, acrylic modifier (ACR, the main component is poly(methyl methacrylate‐butyl acrylate)) and polycarbonate‐polydimethylsiloxane block copolymer (PC‐b‐PDMS) were used to toughen polyvinyl chloride (PVC). Different content toughening agents (10 and 20 phr) were added into PVC and their properties were tested. The results exhibited that ACR, ASA, and PC‐b‐PDMS‐40 (40% PDMS content) had high impact strength (more than 100 kJ m−2) at room temperature. With the decrease of temperature, the toughening effect of ACR and ASA dropped significantly (7.30 and 3.69 kJ m−2 at −30°C respectively), while PC‐b‐PDMS‐40 still had certain toughening effect (19.66 kJ m−2 at −30°C). The tensile and flexural strength of blends decreased with the addition of toughening agents, while due to strong interactions between PC and PVC, elongation at break of PVC/PC‐b‐PDMS also have obvious drop. Heat distortion temperature results showed that the heat resistance of PVC was not reduced by toughening agents except CPE. The DMTA curves of blends revealed the reason why PVC/PC‐b‐PDMS‐40 had good toughness at low temperature that the glass transition temperature of PDMS is very low (−123°C), which makes it flexible at low temperature.

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Excellent toughness of rigid polyvinylchloride at low temperature improved by polycarbonate‐polydimethylsiloxane block copolymer

Cited by 8 publications

References 35 publications

Compatibilization of Polycarbonate/Silicon Rubber Blend with Styrene/Silicon Oil/Acrylonitrile Ternary Copolymer for Ultra-High Low-Temperature Toughness

Compatibilization of Polycarbonate/Silicon Rubber Blend with Styrene/Silicon Oil/Acrylonitrile Ternary Copolymer for Ultra-High Low-Temperature Toughness

A Coherent Assessment of the Compressive Strain Rate Response of PC, PETG, PMMA, and TPU Thermoplastics in MEX Additive Manufacturing

Comparison of toughening effects of several common toughening agents and polycarbonate‐polydimethylsiloxane block copolymer on polyvinyl chloride

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