Adhesive Strength of Polythioesters Derived from Bis(4,4´-mereaptophenyl) Sulfide and PET/the Polythioesters Alloys.

寛, 平野; 光秋, 田中; 丈治, 門多; 泰幸, 上利; 喜一, 長谷川

doi:10.11618/adhesion.41.259

Cited by 3 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Especially, the cured epoxy resin modified by 20 phr of MPS_7 achieved a staggering improvement of 17.0 MPa, which is the highest value of these modified epoxy resins. This highest value is approximately three times that of unmodified epoxy resin and it also exceeds the own lap shear strength (12.6 MPa)19 of the MPS_7 polythioester. On the other hand, it is well known that epoxy resins cured by acid anhydride have poor bonding strength to metals in comparison to epoxy resins cured with diamines.…”

Section: Resultsmentioning

confidence: 74%

“…It was expected that the polythioesters would be more effective in enhancing the lap shear strength of cured epoxy resin with a modifier as compared to the polyesters from our previous data 19. Predictably, the lap shear strengths of epoxy resins modified by different concentrations of the MPS_7 polythioester display higher values on the whole of modifier concentrations in comparison with those of TDP_7‐modified and DHPE_7‐modified polyesters.…”

Section: Resultsmentioning

confidence: 85%

“…MPS_3, MPS_7, and MPS_10 polythioesters were employed in this study for modifying epoxy resin because they showed high bonding strengths to copper in our previous research 19. To compare with the bonding strength of MPS polythioester‐modified epoxy resin, the TDP_7 polyester with a diphenylsulfide moiety or the DHPE_7 polyester was also added into the epoxy resin.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Enhancement of Epoxy Resin/Copper Heterojunction by Introduction of Sulfur‐Containing Polymers

Honda

Okada

Nakamura

et al. 2006

Macro Materials & Eng

Self Cite

View full text Add to dashboard Cite

Summary: Epoxy resins are widely used in electronics and electric industries because of their superior properties. In recent years, excellent bonding properties for metals (e.g., copper, gold, aluminium, silver, etc.), to which it is hard to adhere, have become desirable for epoxy resins in the electric and electronics industrial fields. However, epoxy resins have only poor bonding strength to the metals. In order to increase the heterojunction strength between epoxy resins and copper, the introduction of sulfur, providing strong interactions with metals, was investigated. TDP polyester and MPS polythioesters containing sulfur moieties were employed as the sulfur‐containing modifiers for the epoxy resin. Epoxy resins containing a modifier (5–20 phr) and a curing agent were cured between copper plates at 120 °C for 2 h and at 170 °C for 2 h. The effect of the added modifiers was evaluated by the lap‐shear testing method. It could be demonstrated that MPS polythioesters have a beneficial effect on the enhancement of the epoxy resin/copper heterojunction. The most effective example was the addition of 20 phr of the MPS_7 polythioester, which increased the lap shear strength from 5.7 to 17 MPa.Improvement of lap shear strengths of adhesive copper joints by sulfur‐containing modifiers.magnified imageImprovement of lap shear strengths of adhesive copper joints by sulfur‐containing modifiers.

show abstract

Section: Resultsmentioning

confidence: 74%

Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Enhancement of Epoxy Resin/Copper Heterojunction by Introduction of Sulfur‐Containing Polymers

Honda

Okada

Nakamura

et al. 2006

Macro Materials & Eng

Self Cite

View full text Add to dashboard Cite

show abstract

Linear polymers with sulfur in the main chain. IV. Synthesis of thermotropic liquid‐crystalline polythioesters based on 4,4′‐biphenyldithiol with excellent adhesive properties

Honda

Kadota

Agari

et al. 2007

Polymer Engineering & Sci

View full text Add to dashboard Cite

A series of sulfur‐containing linear polythioesters were synthesized from 4,4′‐biphenyldithiol (BPT) and bifunctionally aliphatic acyl dichlorides (ACs) by means of polycondensation. Polycondensations of BPT with azelaoyl chloride or sebacoyl chloride chosen as a model reaction system were investigated in several solvents by solution polycondensation, to find an optimal solvent to achieve high molecular weight and quantitative yield. Thus, all the polythioesters from BPT and AC (methylene number of 3–10) were synthesized in chloroform and their structures were confirmed by 1H‐NMR and Fourier transform infrared spectrophotometer. They were also evaluated by thermogravimetry and differential scanning calorimeter (DSC). Almost all of the BPT, polythioesters exhibited two distinct exothermic and endothermic peaks on first cooling and second heating in their DSC curves, respectively. Polarized microscope (PLM) observation clarified that the higher transition temperatures were isotropic temperatures (Tis). The odd–even effect between Ti and the methylene number was observed in these BPT polythioesters. Furthermore, almost all of the polythioesters showed thermotropic liquid‐crystalline behavior, as evidenced by a PLM observation. To know the effect of introduction of sulfur on adhesive properties of the polythioester/copper junction, a single lap shear test was carried out in comparison with corresponding 4,4′‐biphenyldiol (BPH) polyesters derived from BPH and ACs. It was clarified that the BPT polythioesters have greatly higher adhesive strengths in comparison with the BPH polyesters. POLYM. ENG. SCI., 47:262–269, 2007. © 2007 Society of Plastics Engineers.

show abstract

Linear Polymers with Sulfur in the Main Chain, V. Synthesis and Properties of Thermotropic Copolythioesters Based on 4,4'-Biphenyldithiol

平野¹,

門多²,

上利³

et al. 2007

Journal of the Adhesion Society of Japan

View full text Add to dashboard Cite

Adhesive Strength of Polythioesters Derived from Bis(4,4´-mereaptophenyl) Sulfide and PET/the Polythioesters Alloys.

Cited by 3 publications

References 0 publications

Enhancement of Epoxy Resin/Copper Heterojunction by Introduction of Sulfur‐Containing Polymers

Enhancement of Epoxy Resin/Copper Heterojunction by Introduction of Sulfur‐Containing Polymers

Linear polymers with sulfur in the main chain. IV. Synthesis of thermotropic liquid‐crystalline polythioesters based on 4,4′‐biphenyldithiol with excellent adhesive properties

Linear Polymers with Sulfur in the Main Chain, V. Synthesis and Properties of Thermotropic Copolythioesters Based on 4,4'-Biphenyldithiol

Contact Info

Product

Resources

About

Adhesive Strength of Polythioesters Derived from Bis(4,4´-mereaptophenyl) Sulfide and PET/the Polythioesters Alloys.

Cited by 3 publications

References 0 publications

Enhancement of Epoxy Resin/Copper Heterojunction by Introduction of Sulfur‐Containing Polymers

Enhancement of Epoxy Resin/Copper Heterojunction by Introduction of Sulfur‐Containing Polymers

Linear polymers with sulfur in the main chain. IV. Synthesis of thermotropic liquid‐crystalline polythioesters based on 4,4′‐biphenyldithiol with excellent adhesive properties

Linear Polymers with Sulfur in the Main Chain, V. Synthesis and Properties of Thermotropic Copolythioesters Based on 4,4&apos;-Biphenyldithiol

Contact Info

Product

Resources

About

Linear Polymers with Sulfur in the Main Chain, V. Synthesis and Properties of Thermotropic Copolythioesters Based on 4,4'-Biphenyldithiol