The Relationship between Interfacial Structure and Welding Strength of Hot Plate Welding Crystalline Polymer

Qiu, Jianhui; Takahata, Hiroki; Huang, Yudong; Pan, Yubai

doi:10.1295/koron.65.235

Cited by 9 publications

(6 citation statements)

References 10 publications

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“…Ageorges et al looked at the state of the art of fusion bonding technology and reviewed the application of fusion bonding to joining dissimilar materials [ 2 ]. Qiu et al investigated the effects of welding conditions on the interfacial microscopic structure and welding strength of hot plate welded polypropylene [ 3 ]. Obviously, these traditional methods may play an important role in different applications.…”

Section: Introductionmentioning

confidence: 99%

Study on Welding Mechanism Based on Modification of Polypropylene for Improving the Laser Transmission Weldability to PA66

et al. 2015

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Polypropylene and PA66 are widely used in our daily life, but they cannot be welded by laser transmission welding (LTW) because of polar differences and poor compatibility. In this paper, grafting modification technology is used to improve the welding performance between polypropylene and PA66. Firstly, the strong reactive and polar maleic-anhydride (MAH) is grafted to polypropylene and infrared spectrometer is used to prove that MAH has been grafted to polypropylene. At the same time, the mechanical and thermal properties of the graft modified polypropylene (TGMPP) are tested. The results prove that the grafting modification has little influence on them. Also, the optical properties of TGMPP are measured. Then, the high welding strength between TGMPP and PA66 is found and the mechanism of the weldability is researched, which shows that there are two reasons for the high welding strength. By observing the micro morphology of the welding zone, one reason found is that the modification of polypropylene can improve the compatibility between polypropylene and PA66 and make them easy to diffuse mutually, which causes many locking structures formed in the welding region. The other reason is that there are chemical reactions between TGMPP and PA66 proved by the X-ray photoelectron spectrometer.

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Section: Introductionmentioning

confidence: 99%

Study on Welding Mechanism Based on Modification of Polypropylene for Improving the Laser Transmission Weldability to PA66

et al. 2015

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“…Qiu et al (2007) obtained the high joint strength of polyoxymethylenes by using injection welding. Qiu et al (2008) also investigated the hot plate welding of crystalline polymers and showed the joint condition with high joint strength. Qiu et al (2009) demonstrated the joining of amorphous polymers by ultrasonic welding and obtained the high joint strength and good interface structure.…”

Section: Introductionmentioning

confidence: 99%

Improving the shear strength by silane treatments of aluminum for direct joining of phenolic resin

Qiu

Sakai

Lei

et al. 2012

Journal of Materials Processing Technology

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“…Ultrasonic weld (USW) for polymer uses vibratory energy at high frequencies that are beyond the range of human hearing to produce low amplitude (20-30 µm) mechanical vibrations. The vibrations generate heat at the parts being welded, resulting in melting of the thermoplastic materials and weld formation after cooling [4][5][6][7][8][9][10][11]. However, USW is usually employed to weld polymers which limited in homogeneous materials conventionally.…”

Section: Introductionmentioning

confidence: 99%

Molecular Interdiffusion of Hauling Theory between Dissimilar Polymers Based on Novel USW

Zhang

Qiu

Shao

et al. 2011

AMR

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Based on the novel USW method, the welds of Polylactide (PLA) - Polyformaldehyde (POM) and PLA - polymethyl methacrylate (PMMA) have been carried out. The interdiffusion processes of polymer chains have also been investigated according to the reptation theory and the hauling theory. The welding strengths are carried out by the universal tester and the rupture interfaces are observed using the scanning electron microscope. The best welding strength is 52MPa (90% compared with PLA of the PLA-POM system), which can reach the tensile strength of IPS. The molecules of POM are much easier to inter-diffuse than those of PLA and PMMA.

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The Relationship between Interfacial Structure and Welding Strength of Hot Plate Welding Crystalline Polymer

Cited by 9 publications

References 10 publications

Study on Welding Mechanism Based on Modification of Polypropylene for Improving the Laser Transmission Weldability to PA66

Study on Welding Mechanism Based on Modification of Polypropylene for Improving the Laser Transmission Weldability to PA66

Improving the shear strength by silane treatments of aluminum for direct joining of phenolic resin

Molecular Interdiffusion of Hauling Theory between Dissimilar Polymers Based on Novel USW

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