Residual stress and thermal properties of rubber‐modified epoxy systems for semiconductor package

We synthesized PPG-terminated tetra-carbamates as a new toughening additive for epoxy thermosets through facile addition reaction of hexamethylene diisocyanate (HDI) with poly(tetra-methylene glycols) (PTMG) and poly(propylene glycols) (PPG). The effects of prepared tetra-carbamates on the rheological behavior of neat epoxy resin were studied along with the various cured properties of their modified epoxy systems. Four carbamate groups (–NHCOO–) endow the prepared additives not only with good intramolecular interactions, but also with optimal intermolecular interactions with epoxy polymers. This results in the suitable miscibility of the additives with the epoxy matrix for the formation of the typical biphasic structure of microparticles dispersed in the epoxy matrix via polymerization-induced microphase separation. The impact strength and critical stress concentration factor (KIC) of cured modified epoxy systems with the additives are significantly higher than those of unmodified epoxy systems, without sacrificing the processability (Tg) and flexural strength. The toughening mechanism is understood as a synergism combination among the phase separation mechanism, the in situ homogeneous toughening mechanism, and the particle cavitation mechanism.

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Evaluation of mechanical and thermal properties of modified epoxy resin by using acacia catechu particles

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2018.12.063 ◽

2019 ◽

Vol 225 ◽

pp. 239-246 ◽

Cited By ~ 5

Author(s):

Ahmer Hussain Shah ◽

Xiao Li ◽

Xiaodong Xu ◽

Abdul Qadeer Dayo ◽

Wen-bin Liu ◽

...

Keyword(s):

Thermal Properties ◽

Epoxy Resin ◽

Mechanical And Thermal Properties ◽

Acacia Catechu ◽

Modified Epoxy

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Characterization on thermal properties of glass fiber and kevlar fiber with modified epoxy hybrid composites

Journal of Materials Research and Technology ◽

10.1016/j.jmrt.2020.01.061 ◽

2020 ◽

Vol 9 (3) ◽

pp. 3158-3167 ◽

Cited By ~ 3

Author(s):

Vivekanandhan Chinnasamy ◽

Sampath Pavayee Subramani ◽

Sathish Kumar Palaniappan ◽

Bhuvaneshwaran Mylsamy ◽

Karthik Aruchamy

Keyword(s):

Thermal Properties ◽

Glass Fiber ◽

Hybrid Composites ◽

Kevlar Fiber ◽

Modified Epoxy

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Microstructure and thermal properties of silyl-terminated polycaprolactone–polysiloxane modified epoxy resin composites

Journal of Applied Polymer Science ◽

10.1002/app.28292 ◽

2008 ◽

Vol 109 (2) ◽

pp. 1105-1113 ◽

Cited By ~ 8

Author(s):

Pinggui Liu ◽

Lihua He ◽

Jiangxuan Song ◽

Xingquan Liang ◽

Heyan Ding

Keyword(s):

Thermal Properties ◽

Epoxy Resin ◽

Resin Composites ◽

Epoxy Resin Composites ◽

Modified Epoxy

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Studies on Mechanical and Thermal Properties of Epoxy Resin Modified by Fluorine-Containing Silicone

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.401-403.713 ◽

2013 ◽

Vol 401-403 ◽

pp. 713-716

Author(s):

Cheng Fang ◽

Dong Bo Guan ◽

Wei Guo Yao ◽

Shou Jun Wang ◽

Hui An

Keyword(s):

Glass Transition ◽

Thermal Properties ◽

Epoxy Resin ◽

Bending Strength ◽

Mechanical And Thermal Properties ◽

Curing Agent ◽

Epoxy System ◽

Resin Curing ◽

The Impact ◽

Modified Epoxy

The epoxy resin was modified with the mixture of α,ω-dihydroxy poly-(3,3,3-trifluoropropyl) siloxane (PTFPMS), KH560 and stannous octoate. KH560 can react with PTFPMS and also epoxy resin curing agent. The two reactions were characterized by FI-IR. The modified epoxy resin was characterized by FI-IR. The result showed that fluorine-containing silicone had been successfully introduced into the epoxy system. The mechanical and thermal properties of the modified epoxy resin were analyzed. The results showed that with the increase of PTFPMS the impact strength of epoxy resin increased, hardness and bending strength correspondingly reduced, slight decrease in the glass transition temperature.

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Effect of mixing parameters on the mechanical and thermal properties of a nanoclay-modified epoxy resin

High Performance Polymers ◽

10.1177/0954008313512141 ◽

2013 ◽

Vol 26 (3) ◽

pp. 298-306 ◽

Cited By ~ 7

Author(s):

M. Bakar ◽

M. Kostrzewa ◽

A. Białkowska ◽

Z. Pawelec

Keyword(s):

Thermal Properties ◽

Epoxy Resin ◽

Mechanical And Thermal Properties ◽

Mixing Parameters ◽

Modified Epoxy

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Damage Zone Around Tip of an Interface Crack Between Rubber-Modified Epoxy Resin and Aluminum

Journal of Engineering Materials and Technology ◽

10.1115/1.1417980 ◽

2002 ◽

Vol 124 (2) ◽

pp. 206-214 ◽

Cited By ~ 4

Author(s):

Deok-Bo Lee ◽

Toru Ikeda ◽

Noriyuki Miyazaki ◽

Nak-Sam Choi

Keyword(s):

Residual Stress ◽

Epoxy Resin ◽

Interface Crack ◽

Significant Influence ◽

Fracture Behavior ◽

Structural Integrity ◽

Damage Zone ◽

Crack Tip ◽

Rubber Particles ◽

Modified Epoxy

The fracture behavior of an interface crack tip has significant influence on the structural integrity of an adhesive joint. We investigate a damage zone and the deformation of rubber particles around a tip of an interface crack between rubber-modified epoxy resin and aluminum. They are compared with those around a crack tip in homogeneous rubber-modified epoxy resin. Cavitations in rubber particles are observed around a damaged crack tip in homogeneous resin but not around a damaged interface crack tip. Rubber particles around an interface crack tip are deformed ellipsoidally due to the residual stress even before being damaged, and interfaces between rubber particles and epoxy resin around an interface crack tip are debonded after being damaged.

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